tizen beta release
[framework/web/webkit-efl.git] / Source / WebKit / efl / ewk / ewk_tiled_backing_store.cpp
index c757de7..5af9130 100755 (executable)
@@ -2,12 +2,12 @@
     Copyright (C) 2009-2010 Samsung Electronics
     Copyright (C) 2009-2010 ProFUSION embedded systems
 
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Library General Public
-    License as published by the Free Software Foundation; either
+    This library is free software; you can redistribute item and/or
+    modify item under the terms of the GNU Library General Public
+    License as published baseY the Free Software Foundation; either
     version 2 of the License, or (at your option) any later version.
 
-    This library is distributed in the hope that it will be useful,
+    This library is distributed in the hope that item will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     Library General Public License for more details.
@@ -21,6 +21,7 @@
 #include "config.h"
 #include "ewk_tiled_backing_store.h"
 
+#include "ewk_private.h"
 #include "ewk_tiled_matrix.h"
 #include "ewk_tiled_private.h"
 #include <Ecore.h>
 #include <stdlib.h>
 #include <string.h>
 
-#if ENABLE(TIZEN_REPAINT_IDLER)
-#define THRESHOLD_ANIM_TIME 0.1 // Time after which we reenable the repaint_on_idler feature.
-#endif
-#if ENABLE(TIZEN_PRE_RENDERING_ADVANCE)
-#define HEAVY_TILE_TIME_LIMIT 5000 // heavy tile time limit (5ms)
-#endif
-
-#define IDX(col, row, rowspan) (col + (row * rowspan))
+#define IDX(column, row, rowspan) (column + (row * rowspan))
 
 #if !defined(MIN)
 # define MIN(a, b) ((a < b) ? a : b)
 typedef struct _Ewk_Tiled_Backing_Store_Data Ewk_Tiled_Backing_Store_Data;
 typedef struct _Ewk_Tiled_Backing_Store_Item Ewk_Tiled_Backing_Store_Item;
 typedef struct _Ewk_Tiled_Backing_Store_Pre_Render_Request Ewk_Tiled_Backing_Store_Pre_Render_Request;
-#if ENABLE(TIZEN_REPAINT_IDLER)
-typedef struct _Ewk_Tiled_Backing_Store_Update_Add_Item Ewk_Tiled_Backing_Store_Update_Add_Item;
-typedef struct _Ewk_Tiled_Backing_Store_Process_Request Ewk_Tiled_Backing_Store_Process_Request;
-
-struct _Ewk_Tiled_Backing_Store_Update_Add_Item {
-    Eina_Rectangle area;
-    Ewk_Tile *t;
-};
-#endif
 
 struct _Ewk_Tiled_Backing_Store_Item {
     EINA_INLIST;
@@ -68,104 +53,93 @@ struct _Ewk_Tiled_Backing_Store_Item {
     struct {
         Evas_Coord x, y, width, height;
     } geometry;
-    Eina_Bool smooth_scale;
+    bool smoothScale;
 };
 
 struct _Ewk_Tiled_Backing_Store_Pre_Render_Request {
     EINA_INLIST;
-    unsigned long col, row;
+    unsigned long column, row;
     float zoom;
 };
 
 struct _Ewk_Tiled_Backing_Store_Data {
     Evas_Object_Smart_Clipped_Data base;
     Evas_Object* self;
-    Evas_Object* contents_clipper;
+    Evas_Object* contentsClipper;
     struct {
         Eina_Inlist** items;
         Evas_Coord x, y, width, height;
-        long cols, rows;
+        long columns, rows;
         struct {
             Evas_Coord width, height;
             float zoom;
 #if ENABLE(TIZEN_CAIRO_SCALE_PATCH)
             Eina_Bool enable_scale:1;
 #endif
-            Eina_Bool zoom_weak_smooth_scale : 1;
+            bool zoomWeakSmoothScale : 1;
 #if ENABLE(TIZEN_TILED_VIEW_BG_COLOR_SET)
-            Eina_Bool has_alpha:1;
+            Eina_Bool hasAlpha:1;
 #endif
         } tile;
         struct {
             struct {
                 Evas_Coord x, y;
-            } cur, old, base, zoom_center;
+            } current, old, base, zoomCenter;
         } offset;
 #if ENABLE(TIZEN_VIEW_ACTIVE_SET)
         Eina_Bool active:1;
 #endif
 #if ENABLE(TIZEN_FIX_RSS_IMAGE_DISPLAY)
-        Eina_Bool changed_zoom:1; // Set if zoom level is same as previous zoom level when zoom set
+        Eina_Bool changedZoom:1; // Set if zoom level is same as previous zoom level when zoom set
 #endif
     } view;
-    Evas_Colorspace cspace;
+    Evas_Colorspace colorSpace;
     struct {
         Ewk_Tile_Matrix* matrix;
         struct {
-            unsigned long col, row;
+            unsigned long column, row;
         } base;
         struct {
-            unsigned long cols, rows;
-        } cur, old;
+            unsigned long columns, rows;
+        } current, old;
         Evas_Coord width, height;
     } model;
     struct {
-        Eina_Bool (*cb)(void* data, Ewk_Tile* tile, const Eina_Rectangle* area);
+        Eina_Bool (*callback)(void* data, Ewk_Tile* tile, const Eina_Rectangle* area);
         void* data;
-        Eina_Inlist* pre_render_requests;
+        Eina_Inlist* preRenderRequests;
         Ecore_Idler *idler;
-#if ENABLE(TIZEN_REPAINT_IDLER)
-        Eina_List *process_requests;
-        Eina_List *tiles_pending_update_add;
-        Ecore_Timer *restore_idler_timer; // Timer to restore the on_idler repaints.
-        Eina_Bool on_idler; // Set if render should occur on an idler.
-        Eina_Bool on_idler_disabled; // Set if render on idler is temporarily disabled.
-        Eina_Bool next_no_idler; // Set if next updates_process shouldn't occur on an idler
-#endif
         Eina_Bool disabled;
         Eina_Bool suspend : 1;
 #if ENABLE(TIZEN_SELECTIVE_RENDERING)
         struct {
             Eina_Bool enabled; // Set if selective tile rendering should be used. This setting allows to create a new tiles when are needed.
-            Eina_Bool render_on_next; // Set if selective tile rendering should be used during next call of _ewk_tiled2_backing_store_updates_process function.
-            Ecore_Idle_Enterer *idler_enterer;
-        } selective_render;
-#endif
-#if ENABLE(TIZEN_PRE_RENDERING_ADVANCE)
-        Eina_Inlist *heavy_tile_list;
+            Eina_Bool renderOnNext; // Set if selective tile rendering should be used during next call of _ewk_tiled2_backing_store_updates_process function.
+            Ecore_Idle_Enterer *idlerEnterer;
+        } selectiveRender;
 #endif
     } render;
     struct {
-        void* (*pre_cb)(void* data, Evas_Object* ewkTile);
-        void* pre_data;
-        void* (*post_cb)(void* data, void* pre_data, Evas_Object* ewkTile);
-        void* post_data;
+        void* (*preCallback)(void* data, Evas_Object* ewkBackingStore);
+        void* preData;
+        void* (*postCallback)(void* data, void* preData, Evas_Object* ewkBackingStore);
+        void* postData;
     } process;
     struct {
-        Eina_Bool any : 1;
-        Eina_Bool pos : 1;
-        Eina_Bool size : 1;
-        Eina_Bool model : 1;
-        Eina_Bool offset : 1;
+        bool any : 1;
+        bool position : 1;
+        bool size : 1;
+        bool model : 1;
+        bool offset : 1;
 #if ENABLE(TIZEN_TILE_MATRIX_LIST)
-        Eina_Bool layout:1;
+        bool layout:1;
 #endif
 #if ENABLE(TIZEN_FIX_EMAIL_ONE_TILE_DISPLAY)
-        Eina_Bool need_layout:1;
+        bool needLayout:1;
 #endif
     } changed;
 #ifdef DEBUG_MEM_LEAKS
-    Ecore_Event_Handler* sig_usr;
+    Ecore_Event_Handler* sigUsr;
 #endif
 };
 
@@ -183,54 +157,12 @@ int _ewk_tiled_log_dom = -1;
         return __VA_ARGS__;                                          \
     }
 
-#if ENABLE(TIZEN_PRE_RENDERING_ADVANCE)
-typedef struct _Ewk_Heavy_Tile Ewk_Heavy_Tile;
-struct _Ewk_Heavy_Tile {
-    EINA_INLIST;
-    int col;
-    int row;
-    long drawing_time;
-};
-
-Eina_Bool ewk_tiled_backing_store_drawing_time_request_add(Ewk_Tiled_Backing_Store_Data *priv, unsigned long col, unsigned long row, float zoom, long drawing_time);
-#endif
-
 static void _ewk_tiled_backing_store_fill_renderers(Ewk_Tiled_Backing_Store_Data *priv);
 static inline void _ewk_tiled_backing_store_view_dbg(const Ewk_Tiled_Backing_Store_Data *priv);
 static inline void _ewk_tiled_backing_store_changed(Ewk_Tiled_Backing_Store_Data *priv);
 #if ENABLE(TIZEN_SELECTIVE_RENDERING)
 static inline void _ewk_tiled_backing_store_item_process_idler_start(Ewk_Tiled_Backing_Store_Data *priv);
 #endif
-#if ENABLE(TIZEN_REPAINT_IDLER)
-void _ewk_tiled_backing_store_restore_idler_timer_stop(Ewk_Tiled_Backing_Store_Data *priv);
-void _ewk_tiled_backing_store_restore_idler_timer_reset(Ewk_Tiled_Backing_Store_Data *priv);
-
-static inline void _ewk_tiled_backing_store_process_requests_flush(Ewk_Tiled_Backing_Store_Data *priv)
-{
-    Ewk_Tile *t;
-    void* item;
-
-    EINA_LIST_FREE(priv->render.process_requests, item) {
-        t = static_cast<Ewk_Tile*>(item);
-        free(t);
-    }
-}
-
-static void _ewk_tiled_backing_store_process_cb(void *data, Ewk_Tile *t)
-{
-    Ewk_Tiled_Backing_Store_Data *priv = static_cast<Ewk_Tiled_Backing_Store_Data*>(data);
-    if (!t->visible)
-        return;
-
-    priv->render.process_requests = eina_list_append(priv->render.process_requests, t);
-}
-
-static inline void _ewk_tiled_backing_store_process_queue_update(Ewk_Tiled_Backing_Store_Data *priv)
-{
-    ewk_tile_matrix_updates_process2(
-        priv->model.matrix, _ewk_tiled_backing_store_process_cb, priv);
-}
-#endif
 
 static inline void _ewk_tiled_backing_store_updates_process(Ewk_Tiled_Backing_Store_Data* priv)
 {
@@ -246,48 +178,33 @@ static inline void _ewk_tiled_backing_store_updates_process(Ewk_Tiled_Backing_St
     if (priv->render.suspend || !evas_object_visible_get(priv->self)) 
 #endif
 #if ENABLE(TIZEN_SELECTIVE_RENDERING)
-    if (!priv->render.selective_render.enabled)
+    if (!priv->render.selectiveRender.enabled)
 #endif
         return;
 
-    if (priv->process.pre_cb)
-        data = priv->process.pre_cb(priv->process.pre_data, priv->self);
+    if (priv->process.preCallback)
+        data = priv->process.preCallback(priv->process.preData, priv->self);
 
 #if ENABLE(TIZEN_SELECTIVE_RENDERING)
-    if (priv->render.selective_render.enabled && priv->render.selective_render.render_on_next)
+    if (priv->render.selectiveRender.enabled)
         ewk_tile_matrix_selective_rendering_updates_process(priv->model.matrix);
     else
 #endif
-#if ENABLE(TIZEN_REPAINT_IDLER)
-    if (!priv->render.on_idler) {
-        ewk_tile_matrix_updates_process(priv->model.matrix);
-    } else if (priv->render.on_idler_disabled) {
-        if (ewk_tile_matrix_updates_process(priv->model.matrix))
-            _ewk_tiled_backing_store_restore_idler_timer_reset(priv);
-    } else if (priv->render.next_no_idler) {
-#endif
         ewk_tile_matrix_updates_process(priv->model.matrix);
-#if ENABLE(TIZEN_REPAINT_IDLER)
-        priv->render.next_no_idler = EINA_FALSE;
-    } else if (!priv->render.process_requests) {
-        _ewk_tiled_backing_store_process_queue_update(priv);
-        _ewk_tiled_backing_store_item_process_idler_start(priv);
-    }
-#endif
 
-    if (priv->process.post_cb)
-        priv->process.post_cb(priv->process.post_data, data, priv->self);
+    if (priv->process.postCallback)
+        priv->process.postCallback(priv->process.postData, data, priv->self);
 }
 #if !ENABLE(TIZEN_TILE_REUSE_ALREADY_CREATED)
 
 static int _ewk_tiled_backing_store_flush(void* data)
 {
     Ewk_Tiled_Backing_Store_Data* priv = static_cast<Ewk_Tiled_Backing_Store_Data*>(data);
-    Ewk_Tile_Unused_Cache* tuc = ewk_tile_matrix_unused_cache_get(priv->model.matrix);
+    Ewk_Tile_Unused_Cache* tiledUnusedCache = ewk_tile_matrix_unused_cache_get(priv->model.matrix);
 
-    if (tuc) {
+    if (tiledUnusedCache) {
         DBG("flush unused tile cache.");
-        ewk_tile_unused_cache_auto_flush(tuc);
+        ewk_tile_unused_cache_auto_flush(tiledUnusedCache);
     } else
         ERR("no cache?!");
 
@@ -344,16 +261,16 @@ static void _ewk_tiled_backing_store_item_resize(Ewk_Tiled_Backing_Store_Item* i
 static void _ewk_tiled_backing_store_tile_associate(Ewk_Tiled_Backing_Store_Data* priv, Ewk_Tile* tile, Ewk_Tiled_Backing_Store_Item* item)
 {
     if (item->tile)
-        CRITICAL("it->tile=%p, but it should be 0!", item->tile);
+        CRITICAL("item->tile=%p, but item should be 0!", item->tile);
     item->tile = tile;
     evas_object_move(item->tile->image, item->geometry.x, item->geometry.y);
     evas_object_resize(item->tile->image, item->geometry.width, item->geometry.height);
     evas_object_image_fill_set
         (item->tile->image, 0, 0, item->geometry.width, item->geometry.height);
-    evas_object_image_smooth_scale_set(item->tile->image, item->smooth_scale);
+    evas_object_image_smooth_scale_set(item->tile->image, item->smoothScale);
 
 #if ENABLE(TIZEN_TILED_VIEW_BG_COLOR_SET)
-    evas_object_image_alpha_set(item->tile->image, priv->view.tile.has_alpha);
+    evas_object_image_alpha_set(item->tile->image, priv->view.tile.hasAlpha);
 #endif
     if (!ewk_tile_visible_get(tile))
         evas_object_smart_member_add(tile->image, priv->self);
@@ -364,140 +281,135 @@ static void _ewk_tiled_backing_store_tile_associate(Ewk_Tiled_Backing_Store_Data
 static void _ewk_tiled_backing_store_tile_dissociate(Ewk_Tiled_Backing_Store_Data* priv, Ewk_Tiled_Backing_Store_Item* item, double lastUsed)
 {
 #if !ENABLE(TIZEN_TILE_REUSE_ALREADY_CREATED)
-    Ewk_Tile_Unused_Cache* tuc;
+    Ewk_Tile_Unused_Cache* tileUnusedCache,;
 #endif
     ewk_tile_hide(item->tile);
     if (!ewk_tile_visible_get(item->tile))
         evas_object_smart_member_del(item->tile->image);
     ewk_tile_matrix_tile_put(priv->model.matrix, item->tile, lastUsed);
 #if !ENABLE(TIZEN_TILE_REUSE_ALREADY_CREATED)
-    tuc = ewk_tile_matrix_unused_cache_get(priv->model.matrix);
-    ewk_tile_unused_cache_auto_flush(tuc);
-
+    tileUnusedCache = ewk_tile_matrix_unused_cache_get(priv->model.matrix);
+    ewk_tile_unused_cache_auto_flush(tileUnusedCache);
 #endif
     item->tile = 0;
 }
 
 static void _ewk_tiled_backing_store_tile_dissociate_all(Ewk_Tiled_Backing_Store_Data* priv)
 {
-    Eina_Inlist* it;
+    Eina_Inlist* list;
     Ewk_Tiled_Backing_Store_Item* item;
     int i;
     double last_used = ecore_loop_time_get();
 
     for (i = 0; i < priv->view.rows; i++) {
-        it = priv->view.items[i];
-        EINA_INLIST_FOREACH(it, item)
+        list = priv->view.items[i];
+        EINA_INLIST_FOREACH(list, item)
             if (item->tile)
                 _ewk_tiled_backing_store_tile_dissociate(priv, item, last_used);
     }
 }
 
-static inline Eina_Bool _ewk_tiled_backing_store_pre_render_request_add(Ewk_Tiled_Backing_Store_Data *priv, unsigned long col, unsigned long row, float zoom)
+static inline Eina_Bool _ewk_tiled_backing_store_pre_render_request_add(Ewk_Tiled_Backing_Store_Data* priv, unsigned long column, unsigned long row, float zoom)
 {
-    Ewk_Tiled_Backing_Store_Pre_Render_Request* r;
+    Ewk_Tiled_Backing_Store_Pre_Render_Request* request;
 
-    r = static_cast<Ewk_Tiled_Backing_Store_Pre_Render_Request*>(malloc(sizeof(*r)));
-    if (!r)
-        return EINA_FALSE;
+    request = static_cast<Ewk_Tiled_Backing_Store_Pre_Render_Request*>(malloc(sizeof(*request)));
+    if (!request)
+        return false;
 
-    priv->render.pre_render_requests = eina_inlist_append
-        (priv->render.pre_render_requests, EINA_INLIST_GET(r));
+    priv->render.preRenderRequests = eina_inlist_append
+        (priv->render.preRenderRequests, EINA_INLIST_GET(request));
 
-    r->col = col;
-    r->row = row;
-    r->zoom = zoom;
+    request->column = column;
+    request->row = row;
+    request->zoom = zoom;
 
-    return EINA_TRUE;
+    return true;
 }
 
 static inline void _ewk_tiled_backing_store_pre_render_request_del(Ewk_Tiled_Backing_Store_Data* priv, Ewk_Tiled_Backing_Store_Pre_Render_Request* request)
 {
-    priv->render.pre_render_requests = eina_inlist_remove
-                                           (priv->render.pre_render_requests, EINA_INLIST_GET(request));
+    priv->render.preRenderRequests = eina_inlist_remove
+                                           (priv->render.preRenderRequests, EINA_INLIST_GET(request));
     free(request);
 }
 
 static inline Ewk_Tiled_Backing_Store_Pre_Render_Request* _ewk_tiled_backing_store_pre_render_request_first(const Ewk_Tiled_Backing_Store_Data* priv)
 {
     return EINA_INLIST_CONTAINER_GET(
-               priv->render.pre_render_requests,
+               priv->render.preRenderRequests,
                Ewk_Tiled_Backing_Store_Pre_Render_Request);
 }
 
 static void _ewk_tiled_backing_store_pre_render_request_flush(Ewk_Tiled_Backing_Store_Data* priv)
 {
-    Eina_Inlist** pl = &priv->render.pre_render_requests;
-    while (*pl) {
-        Ewk_Tiled_Backing_Store_Pre_Render_Request* r;
-        r = _ewk_tiled_backing_store_pre_render_request_first(priv);
-        *pl = eina_inlist_remove(*pl, *pl);
-        free(r);
+    Eina_Inlist** preRenderList = &priv->render.preRenderRequests;
+    while (*preRenderList) {
+        Ewk_Tiled_Backing_Store_Pre_Render_Request* request;
+        request = _ewk_tiled_backing_store_pre_render_request_first(priv);
+        *preRenderList = eina_inlist_remove(*preRenderList, *preRenderList);
+        free(request);
     }
 }
 
 static void _ewk_tiled_backing_store_pre_render_request_clear(Ewk_Tiled_Backing_Store_Data* priv)
 {
-    Eina_Inlist** pl = &priv->render.pre_render_requests;
-    Eina_Inlist* iter = *pl, * tmp;
+    Eina_Inlist** preRenderList = &priv->render.preRenderRequests;
+    Eina_Inlist* iter = *preRenderList, *tmp;
     while (iter) {
-        Ewk_Tiled_Backing_Store_Pre_Render_Request* r =
+        Ewk_Tiled_Backing_Store_Pre_Render_Request* request =
             EINA_INLIST_CONTAINER_GET(
                 iter, Ewk_Tiled_Backing_Store_Pre_Render_Request);
         tmp = iter->next;
-        *pl = eina_inlist_remove(*pl, iter);
+        *preRenderList = eina_inlist_remove(*preRenderList, iter);
         iter = tmp;
-        free(r);
+        free(request);
     }
 }
 
-/* assumes priv->process.pre_cb was called if required! */
+/* assumes priv->process.preCallback was called if required! */
 static void _ewk_tiled_backing_store_pre_render_request_process_single(Ewk_Tiled_Backing_Store_Data* priv)
 {
-    Ewk_Tiled_Backing_Store_Pre_Render_Request* req;
+    Ewk_Tiled_Backing_Store_Pre_Render_Request* request;
     Eina_Rectangle area;
-    Ewk_Tile_Matrix* tm = priv->model.matrix;
+    Ewk_Tile_Matrix* tileMatrix = priv->model.matrix;
     Ewk_Tile* tile;
 #if !ENABLE(TIZEN_TILE_REUSE_ALREADY_CREATED)
-    Ewk_Tile_Unused_Cache* tuc;
+    Ewk_Tile_Unused_Cache* tileUnusedCache,;
 #endif
-    unsigned long col, row;
+    unsigned long column, row;
     float zoom;
     double last_used = ecore_loop_time_get();
 
-#if ENABLE(TIZEN_PRE_RENDERING_ADVANCE)
-    if (priv->render.suspend)
-        return;
-#endif
-    req = _ewk_tiled_backing_store_pre_render_request_first(priv);
-    if (!req)
+    request = _ewk_tiled_backing_store_pre_render_request_first(priv);
+    if (!request)
         return;
 
-    col = req->col;
-    row = req->row;
-    zoom = req->zoom;
+    column = request->column;
+    row = request->row;
+    zoom = request->zoom;
 
 #if !ENABLE(TIZEN_PRE_RENDER_TILES_CREATED_AFTER_SCROLL)
-    if (ewk_tile_matrix_tile_exact_exists(tm, col, row, zoom)) {
-        DBG("no pre-render required for tile %lu,%lu @ %f.", col, row, zoom);
+    if (ewk_tile_matrix_tile_exact_exists(tileMatrix, column, row, zoom)) {
+        DBG("no pre-render required for tile %lu,%lu @ %f.", column, row, zoom);
         goto end;
     }
 
-    tile = _ewk_tiled_backing_store_tile_new(priv, col, row, zoom);
+    tile = _ewk_tiled_backing_store_tile_new(priv, column, row, zoom);
 #else
-    if (!ewk_tile_matrix_tile_is_pre_renderable(tm, col, row, zoom)) {
-        DBG("no pre-render required for tile %lu,%lu @ %f.", col, row, zoom);
+    if (!ewk_tile_matrix_tile_is_pre_renderable(tileMatrix, column, row, zoom)) {
+        DBG("no pre-render required for tile %lu,%lu @ %f.", column, row, zoom);
         goto end;
     }
-    tile = ewk_tile_matrix_tile_exact_get(tm, col, row, zoom);
+    tile = ewk_tile_matrix_tile_exact_get(tileMatrix, column, row, zoom);
 
     if (!tile)
-        tile = _ewk_tiled_backing_store_tile_new(priv, col, row, zoom);
+        tile = _ewk_tiled_backing_store_tile_new(priv, column, row, zoom);
 #endif
 
     if (!tile) {
 #if ENABLE(TIZEN_EWK_ERROR_LOG)
-        CRITICAL("Couldn't create tile (%lu, %lu) z:%f", row, col, zoom);
+        CRITICAL("Couldn'tile create tile (%lu, %lu) z:%f", row, column, zoom);
 #endif
         goto end;
     }
@@ -517,28 +429,8 @@ static void _ewk_tiled_backing_store_pre_render_request_process_single(Ewk_Tiled
         area.h = priv->view.tile.height;
 #endif
 
-#if ENABLE(TIZEN_PRE_RENDERING_ADVANCE)
-    struct timespec start;
-    struct timespec end;
+    priv->render.callback(priv->render.data, tile, &area);
 
-    clock_gettime(CLOCK_REALTIME, &start);
-    priv->render.cb(priv->render.data, tile, &area);
-    clock_gettime(CLOCK_REALTIME, &end);
-
-    int sec = end.tv_sec - start.tv_sec;
-    long nano_sec = (long)(end.tv_nsec-start.tv_nsec);
-
-    if (nano_sec < 0) {
-        nano_sec = nano_sec + 1000000000;
-        sec = sec - 1;
-    }
-
-    t->drawing_time = (sec * 1000000) + (nano_sec / 1000);
-    if (t->drawing_time >= HEAVY_TILE_TIME_LIMIT && t->zoom == 1.0)
-        ewk_tiled_backing_store_drawing_time_request_add(priv, t->col, t->row, t->zoom, t->drawing_time);
-#else
-    priv->render.cb(priv->render.data, tile, &area);
-#endif
 #if ENABLE(TIZEN_TILE_ADD_PAINTED_STATE)
     if (!ewk_tile_state_painted_get(tile) && tile->visible)
         ewk_tile_state_painted_set(tile, EINA_TRUE);
@@ -549,98 +441,40 @@ static void _ewk_tiled_backing_store_pre_render_request_process_single(Ewk_Tiled
 #else
     evas_object_image_data_update_add(tile->image, area.x, area.y, area.w, area.h);
 #endif
-    ewk_tile_matrix_tile_updates_clear(tm, tile);
+    ewk_tile_matrix_tile_updates_clear(tileMatrix, tile);
 #if ENABLE(TIZEN_TILE_REUSE_ALREADY_CREATED)
     ewk_tile_empty_clear(tile);
 #endif
-    ewk_tile_matrix_tile_put(tm, tile, last_used);
+    ewk_tile_matrix_tile_put(tileMatrix, tile, last_used);
 
 end:
-    _ewk_tiled_backing_store_pre_render_request_del(priv, req);
+    _ewk_tiled_backing_store_pre_render_request_del(priv, request);
 #if !ENABLE(TIZEN_TILE_REUSE_ALREADY_CREATED)
-    tuc = ewk_tile_matrix_unused_cache_get(priv->model.matrix);
-    ewk_tile_unused_cache_auto_flush(tuc);
+    tileUnusedCache = ewk_tile_matrix_unused_cache_get(priv->model.matrix);
+    ewk_tile_unused_cache_auto_flush(tileUnusedCache);
 #endif
 }
 
-#if ENABLE(TIZEN_REPAINT_IDLER)
-static inline void _ewk_tiled_backing_store_update_add_flush(Ewk_Tiled_Backing_Store_Data *priv)
-{
-    Ewk_Tiled_Backing_Store_Update_Add_Item *up;
-    void* item;
-
-    EINA_LIST_FREE(priv->render.tiles_pending_update_add, item) {
-        up = static_cast<Ewk_Tiled_Backing_Store_Update_Add_Item*>(item);
-        free(up);
-    }
-}
-
-static inline void _ewk_tiled_backing_store_update_add_process(Ewk_Tiled_Backing_Store_Data *priv)
-{
-    Ewk_Tiled_Backing_Store_Update_Add_Item *up;
-    void* item;
-    EINA_LIST_FREE(priv->render.tiles_pending_update_add, item) {
-        up = static_cast<Ewk_Tiled_Backing_Store_Update_Add_Item*>(item);
-        float scale = 1.0;
-#if ENABLE(TIZEN_CAIRO_SCALE_PATCH)
-        if (priv->view.tile.enable_scale)
-            scale = up->t->zoom;
-#endif
-        evas_object_image_data_update_add(up->t->image,
-                                          up->area.x * scale,
-                                          up->area.y * scale,
-                                          up->area.w * scale,
-                                          up->area.h * scale);
-#if ENABLE(TIZEN_TILE_REUSE_ALREADY_CREATED)
-        ewk_tile_empty_clear(up->t);
-#endif
-        free(up);
-    }
-}
-#endif
-
 static Eina_Bool _ewk_tiled_backing_store_item_process_idler_cb(void* data)
 {
     Ewk_Tiled_Backing_Store_Data* priv = static_cast<Ewk_Tiled_Backing_Store_Data*>(data);
 
-    if (priv->process.pre_cb)
-        data = priv->process.pre_cb(priv->process.pre_data, priv->self);
-#if ENABLE(TIZEN_REPAINT_IDLER)
-    if (priv->render.process_requests) {
-        Ewk_Tile *t;
-        t = static_cast<Ewk_Tile*>(eina_list_data_get(priv->render.process_requests));
-#if ENABLE(TIZEN_SVACE_CHECK)
-        if (t && t->visible)
-#else
-        if (t->visible)
-#endif
-            ewk_tile_matrix_tile_updates_process(priv->model.matrix, t);
 
-        priv->render.process_requests = eina_list_remove_list(
-            priv->render.process_requests, priv->render.process_requests);
+    if (priv->process.preCallback)
+        data = priv->process.preCallback(priv->process.preData, priv->self);
 
-        // If the queue became empty, try to add more process requests to it.
-        if (!priv->render.process_requests) {
-            _ewk_tiled_backing_store_update_add_process(priv);
-            _ewk_tiled_backing_store_process_queue_update(priv);
-        }
-    } else // no tile process request, can start processing the pre-render requests
-#endif
-        _ewk_tiled_backing_store_pre_render_request_process_single(priv);
+    _ewk_tiled_backing_store_pre_render_request_process_single(priv);
 
-    if (priv->process.post_cb)
-        priv->process.post_cb(priv->process.post_data, data, priv->self);
+    if (priv->process.postCallback)
+        priv->process.postCallback(priv->process.postData, data, priv->self);
 
-#if ENABLE(TIZEN_REPAINT_IDLER)
-    if (!priv->render.process_requests && !priv->render.pre_render_requests) {
-#else
-    if (!priv->render.pre_render_requests) {
-#endif
+
+    if (!priv->render.preRenderRequests) {
         priv->render.idler = 0;
-        return EINA_FALSE;
+        return false;
     }
 
-    return EINA_TRUE;
+    return true;
 }
 
 static inline void _ewk_tiled_backing_store_item_process_idler_stop(Ewk_Tiled_Backing_Store_Data* priv)
@@ -663,125 +497,120 @@ static inline void _ewk_tiled_backing_store_item_process_idler_start(Ewk_Tiled_B
 static Eina_Bool _ewk_tiled_backing_store_disable_render(Ewk_Tiled_Backing_Store_Data* priv)
 {
     if (priv->render.suspend)
-        return EINA_TRUE;
+        return true;
 
-    priv->render.suspend = EINA_TRUE;
-#if ENABLE(TIZEN_REPAINT_IDLER)
-    _ewk_tiled_backing_store_restore_idler_timer_stop(priv);
-    _ewk_tiled_backing_store_process_requests_flush(priv);
-#endif
+
+    priv->render.suspend = true;
     _ewk_tiled_backing_store_item_process_idler_stop(priv);
-#if ENABLE(TIZEN_REPAINT_IDLER)
-    _ewk_tiled_backing_store_update_add_process(priv);
-#endif
-    return EINA_TRUE;
+
+    return true;
 }
 
 static Eina_Bool _ewk_tiled_backing_store_enable_render(Ewk_Tiled_Backing_Store_Data* priv)
 {
     if (!priv->render.suspend)
-        return EINA_TRUE;
+        return true;
 
-    priv->render.suspend = EINA_FALSE;
+    priv->render.suspend = false;
 
     _ewk_tiled_backing_store_fill_renderers(priv);
     _ewk_tiled_backing_store_item_process_idler_start(priv);
 
-    return EINA_TRUE;
+    return true;
 }
 
 static inline Eina_Bool _ewk_tiled_backing_store_item_fill(Ewk_Tiled_Backing_Store_Data* priv, Ewk_Tiled_Backing_Store_Item* item, unsigned long column, unsigned long row)
 {
-    unsigned long m_col = priv->model.base.col + column;
-    unsigned long m_row = priv->model.base.row + row;
-    double last_used = ecore_loop_time_get();
+    unsigned long currentColumn = priv->model.base.column + column;
+    unsigned long currentRow = priv->model.base.row + row;
+    double lastUsed = ecore_loop_time_get();
 
 #if ENABLE(TIZEN_VIEW_ACTIVE_SET)
     if (!priv->view.active)
         return EINA_TRUE;
 #endif
-    if (m_col >= priv->model.cur.cols || m_row >= priv->model.cur.rows) {
+    if (currentColumn >= priv->model.current.columns || currentRow >= priv->model.current.rows) {
         if (item->tile)
-            _ewk_tiled_backing_store_tile_dissociate(priv, item, last_used);
+            _ewk_tiled_backing_store_tile_dissociate(priv, item, lastUsed);
     } else {
         Ewk_Tile* tile;
         const float zoom = priv->view.tile.zoom;
 
         if (item->tile) {
             Ewk_Tile* old = item->tile;
-            if (old->row != m_row || old->col != m_col || old->zoom != zoom)
-                _ewk_tiled_backing_store_tile_dissociate(priv, item, last_used);
-            else if (old->row == m_row && old->col == m_col && old->zoom == zoom)
+            if (old->row != currentRow || old->col != currentColumn || old->zoom != zoom)
+                _ewk_tiled_backing_store_tile_dissociate(priv, item, lastUsed);
+            else if (old->row == currentRow && old->col == currentColumn && old->zoom == zoom)
                 goto end;
         }
 
-        tile = ewk_tile_matrix_tile_exact_get(priv->model.matrix, m_col, m_row, zoom);
+        tile = ewk_tile_matrix_tile_exact_get(priv->model.matrix, currentColumn, currentRow, zoom);
 
         if (!tile) {
-            /* NOTE: it never returns 0 if it->tile was set! */
+            /* NOTE: item never returns 0 if item->tile was set! */
             if (item->tile) {
-                CRITICAL("it->tile=%p, but it should be 0!", item->tile);
+                CRITICAL("item->tile=%p, but item should be 0!", item->tile);
                 _ewk_tiled_backing_store_tile_dissociate(priv, item,
-                                                         last_used);
+                                                         lastUsed);
             }
 
             /* Do not add new requests to the render queue */
 #if ENABLE(TIZEN_SELECTIVE_RENDERING)
-            if (!priv->render.suspend || priv->render.selective_render.enabled) {
+            if (!priv->render.suspend || priv->render.selectiveRender.enabled) {
 #else
             if (!priv->render.suspend) {
 #endif
-                tile = _ewk_tiled_backing_store_tile_new(priv, m_col, m_row, zoom);
+                tile = _ewk_tiled_backing_store_tile_new(priv, currentColumn, currentRow, zoom);
                 if (!tile) {
 #if ENABLE(TIZEN_EWK_ERROR_LOG)
-                    CRITICAL("Couldn't create tile (%lu, %lu) z:%f", m_row, m_col, zoom);
+                    CRITICAL("Couldn'tile create tile (%lu, %lu) z:%f", currentColumn, currentRow, zoom);
 #endif
-                    return EINA_FALSE;
+                    return false;
                 }
                 _ewk_tiled_backing_store_tile_associate(priv, tile, item);
             }
         } else if (tile != item->tile) {
             if (item->tile)
                 _ewk_tiled_backing_store_tile_dissociate(priv,
-                                                         item, last_used);
+                                                         item, lastUsed);
             _ewk_tiled_backing_store_tile_associate(priv, tile, item);
         }
 
 end:
 
-        return EINA_TRUE;
+        return true;
     }
 
-    return EINA_TRUE;
+    return true;
 }
 
 static Ewk_Tiled_Backing_Store_Item* _ewk_tiled_backing_store_item_add(Ewk_Tiled_Backing_Store_Data* priv, unsigned long column, unsigned long row)
 {
-    Ewk_Tiled_Backing_Store_Item* it;
-    Evas_Coord x, y, tw, th;
+    Ewk_Tiled_Backing_Store_Item* item;
+    Evas_Coord x, y, tileWidth, tileHeight;
 
-    DBG("o=%p", priv->self);
+    DBG("ewkBackingStore%p", priv->self);
 
-    it = static_cast<Ewk_Tiled_Backing_Store_Item*>(malloc(sizeof(*it)));
-    if (!it)
+    item = static_cast<Ewk_Tiled_Backing_Store_Item*>(malloc(sizeof(*item)));
+    if (!item)
         return 0;
 
-    tw = priv->view.tile.width;
-    th = priv->view.tile.height;
-    x = priv->view.offset.base.x + priv->view.x + tw  *column;
-    y = priv->view.offset.base.y + priv->view.y + th  *row;
+    tileWidth = priv->view.tile.width;
+    tileHeight = priv->view.tile.height;
+    x = priv->view.offset.base.x + priv->view.x + tileWidth  *column;
+    y = priv->view.offset.base.y + priv->view.y + tileHeight  *row;
 
-    it->tile = 0;
+    item->tile = 0;
 
-    it->smooth_scale = priv->view.tile.zoom_weak_smooth_scale;
-    _ewk_tiled_backing_store_item_move(it, x, y);
-    _ewk_tiled_backing_store_item_resize(it, tw, th);
-    if (!_ewk_tiled_backing_store_item_fill(priv, it, column, row)) {
-        free(it);
+    item->smoothScale = priv->view.tile.zoomWeakSmoothScale;
+    _ewk_tiled_backing_store_item_move(item, x, y);
+    _ewk_tiled_backing_store_item_resize(item, tileWidth, tileHeight);
+    if (!_ewk_tiled_backing_store_item_fill(priv, item, column, row)) {
+        free(item);
         return 0;
     }
 
-    return it;
+    return item;
 }
 
 static void _ewk_tiled_backing_store_item_del(Ewk_Tiled_Backing_Store_Data* priv, Ewk_Tiled_Backing_Store_Item* item)
@@ -796,7 +625,7 @@ static void _ewk_tiled_backing_store_item_del(Ewk_Tiled_Backing_Store_Data* priv
 
 static void _ewk_tiled_backing_store_item_smooth_scale_set(Ewk_Tiled_Backing_Store_Item* item, Eina_Bool smoothScale)
 {
-    if (item->smooth_scale == smoothScale)
+    if (item->smoothScale == smoothScale)
         return;
 
     if (item->tile)
@@ -808,54 +637,54 @@ static inline void _ewk_tiled_backing_store_changed(Ewk_Tiled_Backing_Store_Data
     if (priv->changed.any)
         return;
     evas_object_smart_changed(priv->self);
-    priv->changed.any = EINA_TRUE;
+    priv->changed.any = true;
 }
 
-static void _ewk_tiled_backing_store_view_cols_end_del(Ewk_Tiled_Backing_Store_Data* priv, Eina_Inlist** p_row, unsigned int count)
+static void _ewk_tiled_backing_store_view_cols_end_del(Ewk_Tiled_Backing_Store_Data* priv, Eina_Inlist** rowList, unsigned int count)
 {
-    Eina_Inlist* n;
+    Eina_Inlist* nextItem;
     unsigned int i;
 
     if (!count)
         return;
 
-    n = (*p_row)->last;
+    nextItem = (*rowList)->last;
 
     for (i = 0; i < count; i++) {
-        Ewk_Tiled_Backing_Store_Item* it;
-        it = EINA_INLIST_CONTAINER_GET(n, Ewk_Tiled_Backing_Store_Item);
-        n = n->prev;
-        *p_row = eina_inlist_remove(*p_row, EINA_INLIST_GET(it));
-        _ewk_tiled_backing_store_item_del(priv, it);
+        Ewk_Tiled_Backing_Store_Item* item;
+        item = EINA_INLIST_CONTAINER_GET(nextItem, Ewk_Tiled_Backing_Store_Item);
+        nextItem = nextItem->prev;
+        *rowList = eina_inlist_remove(*rowList, EINA_INLIST_GET(item));
+        _ewk_tiled_backing_store_item_del(priv, item);
     }
 }
 
-static Eina_Bool _ewk_tiled_backing_store_view_cols_end_add(Ewk_Tiled_Backing_Store_Data* priv, Eina_Inlist** p_row, unsigned int base_column, unsigned int count)
+static Eina_Bool _ewk_tiled_backing_store_view_cols_end_add(Ewk_Tiled_Backing_Store_Data* priv, Eina_Inlist** rowList, unsigned int baseColumn, unsigned int count)
 {
-    unsigned int i, r = p_row - priv->view.items;
+    unsigned int i, row = rowList - priv->view.items;
 
-    for (i = 0; i < count; i++, base_column++) {
-        Ewk_Tiled_Backing_Store_Item* it;
+    for (i = 0; i < count; i++, baseColumn++) {
+        Ewk_Tiled_Backing_Store_Item* item;
 
-        it = _ewk_tiled_backing_store_item_add(priv, base_column, r);
-        if (!it) {
-            CRITICAL("failed to add column %u of %u in row %u.", i, count, r);
-            _ewk_tiled_backing_store_view_cols_end_del(priv, p_row, i);
-            return EINA_FALSE;
+        item = _ewk_tiled_backing_store_item_add(priv, baseColumn, row);
+        if (!item) {
+            CRITICAL("failed to add column %u of %u in row %u.", i, count, row);
+            _ewk_tiled_backing_store_view_cols_end_del(priv, rowList, i);
+            return false;
         }
 
-        *p_row = eina_inlist_append(*p_row, EINA_INLIST_GET(it));
+        *rowList = eina_inlist_append(*rowList, EINA_INLIST_GET(item));
     }
-    return EINA_TRUE;
+    return true;
 }
 
 static void _ewk_tiled_backing_store_view_row_del(Ewk_Tiled_Backing_Store_Data* priv, Eina_Inlist* row)
 {
     while (row) {
-        Ewk_Tiled_Backing_Store_Item* it;
-        it = EINA_INLIST_CONTAINER_GET(row, Ewk_Tiled_Backing_Store_Item);
+        Ewk_Tiled_Backing_Store_Item* item;
+        item = EINA_INLIST_CONTAINER_GET(row, Ewk_Tiled_Backing_Store_Item);
         row = row->next;
-        _ewk_tiled_backing_store_item_del(priv, it);
+        _ewk_tiled_backing_store_item_del(priv, item);
     }
 }
 
@@ -878,7 +707,7 @@ static void _ewk_tiled_backing_store_view_rows_all_del(Ewk_Tiled_Backing_Store_D
 
     free(priv->view.items);
     priv->view.items = 0;
-    priv->view.cols = 0;
+    priv->view.columns = 0;
     priv->view.rows = 0;
 }
 
@@ -894,38 +723,16 @@ static void _ewk_tiled_backing_store_render(void* data, Ewk_Tile* tile, const Ei
 
 #if ENABLE(TIZEN_ZOOM_CHECK_BEFORE_PAINTING)
     if (priv->view.tile.zoom != tile->zoom)
-        return; // todo: remove me later, don't even flag as dirty!
+        return; // todo: remove me later, don'tile even flag as dirty!
 #else
     if (priv->view.tile.width != tile->width || priv->view.tile.height != tile->height)
-        return; // todo: remove me later, don't even flag as dirty!
+        return; // todo: remove me later, don'tile even flag as dirty!
 #endif
 
-    EINA_SAFETY_ON_NULL_RETURN(priv->render.cb);
-    if (!priv->render.cb(priv->render.data, tile, area))
+    EINA_SAFETY_ON_NULL_RETURN(priv->render.callback);
+    if (!priv->render.callback(priv->render.data, tile, area))
         return;
 
-#if ENABLE(TIZEN_REPAINT_IDLER)
-     if (!priv->render.on_idler || priv->render.next_no_idler || priv->render.on_idler_disabled) {
-        float scale = 1.0;
-#if ENABLE(TIZEN_CAIRO_SCALE_PATCH)
-        if (priv->view.tile.enable_scale)
-            scale = t->zoom;
-#endif
-        evas_object_image_data_update_add(t->image, area->x * scale, area->y * scale, area->w * scale, area->h * scale);
-#if ENABLE(TIZEN_TILE_REUSE_ALREADY_CREATED)
-        ewk_tile_empty_clear(t);
-#endif
-    } else {
-        Ewk_Tiled_Backing_Store_Update_Add_Item *it;
-        MALLOC_OR_OOM_RET(it, sizeof(*it));
-        it->t = t;
-        it->area.x = area->x;
-        it->area.y = area->y;
-        it->area.w = area->w;
-        it->area.h = area->h;
-        priv->render.tiles_pending_update_add = eina_list_append(priv->render.tiles_pending_update_add, it);
-    }
-#else
     float scale = 1.0;
 #if ENABLE(TIZEN_CAIRO_SCALE_PATCH)
     if (priv->view.tile.enable_scale)
@@ -935,12 +742,11 @@ static void _ewk_tiled_backing_store_render(void* data, Ewk_Tile* tile, const Ei
 #if ENABLE(TIZEN_TILE_REUSE_ALREADY_CREATED)
     ewk_tile_empty_clear(tile);
 #endif
-#endif
 }
 
 #if ENABLE(TIZEN_TILE_REUSE_ALREADY_CREATED)
 #if !ENABLE(TIZEN_REUSE_BIGGER_ZOOM_FIRST)
-static unsigned int _tile_distance2(const void *data, Ewk_Tile *t)
+static unsigned int _tile_distance2(const void *data, Ewk_Tile *tile)
 {
     Evas_Coord vx, vy;
     int x, y;
@@ -955,27 +761,27 @@ static unsigned int _tile_distance2(const void *data, Ewk_Tile *t)
                                            // tiles
     float scale = 1.0;
 
-    vx = priv->view.offset.cur.x * -1;
-    vy = priv->view.offset.cur.y * -1;
+    vx = priv->view.offset.current.x * -1;
+    vy = priv->view.offset.current.y * -1;
 
 #if ENABLE(TIZEN_CAIRO_SCALE_PATCH)
     if (priv->view.tile.enable_scale)
         scale = priv->view.tile.zoom;
 #endif
 
-    tx = t->x * scale;
-    ty = t->y * scale;
+    tx = tile->x * scale;
+    ty = tile->y * scale;
 
     // Calculating the distance to the viewport
-    if (tx + t->w < vx)
-        x = vx - (tx + t->w);
+    if (tx + tile->w < vx)
+        x = vx - (tx + tile->w);
     else if (tx > vx + priv->view.w)
         x = tx - (vx + priv->view.w);
     else
         x = 0;
 
-    if (ty + t->h < vy)
-        y = vy - (ty + t->h);
+    if (ty + tile->h < vy)
+        y = vy - (ty + tile->h);
     else if (ty > vy + priv->view.h)
         y = ty - (vy + priv->view.h);
     else
@@ -984,7 +790,7 @@ static unsigned int _tile_distance2(const void *data, Ewk_Tile *t)
     vd = (x*x + y*y);
 
     // Calculating difference from current zoom level
-    zd = multiplier * fabsf(t->zoom - priv->view.tile.zoom);
+    zd = multiplier * fabsf(tile->zoom - priv->view.tile.zoom);
 
     // Calculating distance for non-active views
 #if ENABLE(TIZEN_VIEW_ACTIVE_SET)
@@ -995,11 +801,7 @@ static unsigned int _tile_distance2(const void *data, Ewk_Tile *t)
     return vd + zd + ad;
 }
 #else
-#if ENABLE(TIZEN_PRE_RENDERING_ADVANCE)
-static float _bigger_zoom_first(const void *data, Ewk_Tile *t)
-#else
-static unsigned int _bigger_zoom_first(const void *data, Ewk_Tile *t)
-#endif
+static unsigned int _bigger_zoom_first(const void *data, Ewk_Tile *tile)
 {
     Evas_Coord vx, vy;
     int x, y;
@@ -1016,27 +818,27 @@ static unsigned int _bigger_zoom_first(const void *data, Ewk_Tile *t)
                                        // tiles
     float scale = 1.0;
 
-    vx = priv->view.offset.cur.x * -1;
-    vy = priv->view.offset.cur.y * -1;
+    vx = priv->view.offset.current.x * -1;
+    vy = priv->view.offset.current.y * -1;
 
 #if ENABLE(TIZEN_CAIRO_SCALE_PATCH)
     if (priv->view.tile.enable_scale)
         scale = priv->view.tile.zoom;
 #endif
 
-    tx = t->x * scale;
-    ty = t->y * scale;
+    tx = tile->x * scale;
+    ty = tile->y * scale;
 
     // Calculating the distance to the viewport
-    if (tx + t->width < vx)
-        x = vx - (tx + t->width);
+    if (tx + tile->width < vx)
+        x = vx - (tx + tile->width);
     else if (tx > vx + priv->view.width)
         x = tx - (vx + priv->view.width);
     else
         x = 0;
 
-    if (ty + t->height < vy)
-        y = vy - (ty + t->height);
+    if (ty + tile->height < vy)
+        y = vy - (ty + tile->height);
     else if (ty > vy + priv->view.height)
         y = ty - (vy + priv->view.height);
     else
@@ -1045,28 +847,15 @@ static unsigned int _bigger_zoom_first(const void *data, Ewk_Tile *t)
     vd = (x*x + y*y);
 
     // To keep tiles for smallest zoom level as long as possible
-    diff_zoom = (t->zoom == priv->view.tile.zoom)?0.0f:t->zoom;
+    diff_zoom = (tile->zoom == priv->view.tile.zoom)?0.0f:tile->zoom;
     zd = multiplier * fabsf(diff_zoom);
 
     // Calculating distance for non-active views
 #if ENABLE(TIZEN_VIEW_ACTIVE_SET)
     ad = multiplier * !priv->view.active;
 #endif
-#if ENABLE(TIZEN_PRE_RENDERING_ADVANCE)
-    // Adopt drawing time to measure distance among tiles
-    unsigned int ret = vd + zd + ad;
-    if (t->drawing_time >= HEAVY_TILE_TIME_LIMIT) {
-        // if the tile has over HEAVY_TILE_TIME_LIMIT drawing time, it should remain in cache,
-        // but what if there is no left tile which has less than HEAVY_TILE_TIME_LIMIT.
-        // than in this case pre-render should consider the distance of the tile from viewport.
-        int farmost_distance = priv->model.width * priv->model.width + priv->model.height * priv->model.height + 1;
-        ret = ret * 100 / farmost_distance; // make the value into a percentage
-    }
-    return ret;
-#else
     // return viewport distance + zoom level distance + view being inactive
     return vd + zd + ad;
-#endif
 }
 #endif
 #endif
@@ -1076,8 +865,8 @@ static inline void _ewk_tiled_backing_store_model_matrix_create(Ewk_Tiled_Backin
     if (priv->model.matrix) {
         _ewk_tiled_backing_store_view_rows_all_del(priv);
 
-        priv->changed.offset = EINA_FALSE;
-        priv->changed.size = EINA_TRUE;
+        priv->changed.offset = false;
+        priv->changed.size = true;
 
         ewk_tile_matrix_free(priv->model.matrix);
     }
@@ -1085,43 +874,40 @@ static inline void _ewk_tiled_backing_store_model_matrix_create(Ewk_Tiled_Backin
 #if ENABLE(TIZEN_TILE_REUSE_ALREADY_CREATED)
 #if !ENABLE(TIZEN_REUSE_BIGGER_ZOOM_FIRST)
     priv->model.matrix = ewk_tile_matrix_new
-        (tileUnusedCache, priv->model.cur.cols, priv->model.cur.rows, priv->view.tile.zoom,
-         priv->cspace, priv->view.cols, priv->view.rows,
+        (tileUnusedCache, priv->model.current.columns, priv->model.current.rows, priv->view.tile.zoom,
+         priv->colorSpace, priv->view.columns, priv->view.rows,
          _ewk_tiled_backing_store_render, priv, _tile_distance2, priv, evas_object_evas_get(priv->self));
 #else
     priv->model.matrix = ewk_tile_matrix_new
-        (tileUnusedCache, priv->model.cur.cols, priv->model.cur.rows, priv->view.tile.zoom,
-         priv->cspace, priv->view.cols, priv->view.rows,
+        (tileUnusedCache, priv->model.current.columns, priv->model.current.rows, priv->view.tile.zoom,
+         priv->colorSpace, priv->view.columns, priv->view.rows,
          _ewk_tiled_backing_store_render, priv, _bigger_zoom_first, priv, evas_object_evas_get(priv->self));
 #endif
 #else
-    priv->model.matrix = ewk_tile_matrix_new
-        (tileUnusedCache, priv->model.cur.cols, priv->model.cur.rows,
-         priv->view.tile.zoom, priv->cspace, _ewk_tiled_backing_store_render,
-         priv);
+    priv->model.matrix = ewk_tile_matrix_new(tileUnusedCache, priv->model.current.columns, priv->model.current.rows, priv->view.tile.zoom, priv->colorSpace, _ewk_tiled_backing_store_render, priv);
 #endif
 }
 
-static void _ewk_tiled_backing_store_smart_member_del(Evas_Object* ewkTile, Evas_Object* member)
+static void _ewk_tiled_backing_store_smart_member_del(Evas_Object* ewkBackingStore, Evas_Object* member)
 {
-    PRIV_DATA_GET_OR_RETURN(ewkTile, priv);
-    if (!priv->contents_clipper)
+    PRIV_DATA_GET_OR_RETURN(ewkBackingStore, priv);
+    if (!priv->contentsClipper)
         return;
     evas_object_clip_unset(member);
-    if (!evas_object_clipees_get(priv->contents_clipper))
-        evas_object_hide(priv->contents_clipper);
+    if (!evas_object_clipees_get(priv->contentsClipper))
+        evas_object_hide(priv->contentsClipper);
 }
 
-static void _ewk_tiled_backing_store_smart_member_add(Evas_Object* ewkTile, Evas_Object* member)
+static void _ewk_tiled_backing_store_smart_member_add(Evas_Object* ewkBackingStore, Evas_Object* member)
 {
-    PRIV_DATA_GET_OR_RETURN(ewkTile, priv);
-    if (!priv->contents_clipper)
+    PRIV_DATA_GET_OR_RETURN(ewkBackingStore, priv);
+    if (!priv->contentsClipper)
         return;
-    evas_object_clip_set(member, priv->contents_clipper);
-#if !ENABLE(TIZEN_LOCAL_DIFF)
-    if (evas_object_visible_get(ewkTile))
+    evas_object_clip_set(member, priv->contentsClipper);
+#if !ENABLE(TIZEN_TILE_BASECODE)
+    if (evas_object_visible_get(ewkBackingStore))
 #endif
-    evas_object_show(priv->contents_clipper);
+        evas_object_show(priv->contentsClipper);
 }
 
 #ifdef DEBUG_MEM_LEAKS
@@ -1132,7 +918,7 @@ static void _ewk_tiled_backing_store_mem_dbg(Ewk_Tiled_Backing_Store_Data* priv)
     run++;
 
     printf("\n--- BEGIN DEBUG TILED BACKING STORE MEMORY [%d] --\n"
-           "t=%0.2f, obj=%p, priv=%p, view.items=%p, matrix=%p\n",
+           "tile=%0.2f, obj=%p, priv=%p, view.items=%p, matrix=%p\n",
            run, ecore_loop_time_get(),
            priv->self, priv, priv->view.items, priv->model.matrix);
 
@@ -1144,44 +930,44 @@ static void _ewk_tiled_backing_store_mem_dbg(Ewk_Tiled_Backing_Store_Data* priv)
 
 static Eina_Bool _ewk_tiled_backing_store_sig_usr(void* data, int type, void* event)
 {
-#if !ENABLE(TIZEN_LOCAL_DIFF)
+#if !ENABLE(TIZEN_TILE_BASECODE)
     Ecore_Event_Signal_User* sig = (Ecore_Event_Signal_User*)event;
 #endif
     Ewk_Tiled_Backing_Store_Data* priv = (Ewk_Tiled_Backing_Store_Data*)data;
-#if !ENABLE(TIZEN_LOCAL_DIFF)
+#if !ENABLE(TIZEN_TILE_BASECODE)
 
     if (sig->number == 2) {
-        Ewk_Tile_Unused_Cache* tuc;
-        tuc = ewk_tile_matrix_unused_cache_get(priv->model.matrix);
-        ewk_tile_unused_cache_auto_flush(tuc);
+        Ewk_Tile_Unused_Cache* tilieUnusedCache;
+        tilieUnusedCache = ewk_tile_matrix_unused_cache_get(priv->model.matrix);
+        ewk_tile_unused_cache_auto_flush(tilieUnusedCache);
     }
 
 #endif
     _ewk_tiled_backing_store_view_dbg(priv);
     _ewk_tiled_backing_store_mem_dbg(priv);
-    return EINA_TRUE;
+    return true;
 }
 #endif
 
-static void _ewk_tiled_backing_store_smart_add(Evas_Object* ewkTile)
+static void _ewk_tiled_backing_store_smart_add(Evas_Object* ewkBackingStore)
 {
     Ewk_Tiled_Backing_Store_Data* priv;
 #if ENABLE(TIZEN_CAIRO_SCALE_PATCH)
     float scale = 1.0;
 #endif
 
-    DBG("o=%p", ewkTile);
+    DBG("ewkBackingStore=%p", ewkBackingStore);
 
     priv = static_cast<Ewk_Tiled_Backing_Store_Data*>(calloc(1, sizeof(*priv)));
     if (!priv)
         return;
 
-    priv->self = ewkTile;
+    priv->self = ewkBackingStore;
     priv->view.tile.zoom = 1.0;
     priv->view.tile.width = DEFAULT_TILE_W;
     priv->view.tile.height = DEFAULT_TILE_H;
-    priv->view.offset.cur.x = 0;
-    priv->view.offset.cur.y = 0;
+    priv->view.offset.current.x = 0;
+    priv->view.offset.current.y = 0;
     priv->view.offset.old.x = 0;
     priv->view.offset.old.y = 0;
     priv->view.offset.base.x = 0;
@@ -1190,87 +976,78 @@ static void _ewk_tiled_backing_store_smart_add(Evas_Object* ewkTile)
 #if ENABLE(TIZEN_VIEW_ACTIVE_SET)
     priv->view.active = EINA_TRUE;
 #endif
-    priv->model.base.col = 0;
+    priv->model.base.column = 0;
     priv->model.base.row = 0;
-    priv->model.cur.cols = 1;
-    priv->model.cur.rows = 1;
-    priv->model.old.cols = 0;
+    priv->model.current.columns = 1;
+    priv->model.current.rows = 1;
+    priv->model.old.columns = 0;
     priv->model.old.rows = 0;
     priv->model.width = 0;
     priv->model.height = 0;
-    priv->render.suspend = EINA_FALSE;
-#if ENABLE(TIZEN_REPAINT_IDLER)
-    priv->render.next_no_idler = EINA_FALSE;
-    priv->render.on_idler = EINA_FALSE;
-    priv->render.on_idler_disabled = EINA_FALSE;
-#endif
+    priv->render.suspend = false;
 #if ENABLE(TIZEN_SELECTIVE_RENDERING)
-    priv->render.selective_render.render_on_next = EINA_FALSE;
-    priv->render.selective_render.enabled = EINA_FALSE;
-    priv->render.selective_render.idler_enterer = NULL;
+    priv->render.selectiveRender.renderOnNext = false;
+    priv->render.selectiveRender.enabled = false;
+    priv->render.selectiveRender.idlerEnterer = NULL;
 #endif
-    priv->cspace = EVAS_COLORSPACE_ARGB8888; // TODO: detect it.
+    priv->colorSpace = EVAS_COLORSPACE_ARGB8888; // TODO: detect it.
 #if ENABLE(TIZEN_FIX_EMAIL_ONE_TILE_DISPLAY)
-    priv->changed.need_layout = EINA_FALSE;
+    priv->changed.needLayout = false;
 #endif
 
-    evas_object_smart_data_set(ewkTile, priv);
-    _parent_sc.add(ewkTile);
+    evas_object_smart_data_set(ewkBackingStore, priv);
+    _parent_sc.add(ewkBackingStore);
 
-    priv->contents_clipper = evas_object_rectangle_add(
-        evas_object_evas_get(ewkTile));
-    evas_object_move(priv->contents_clipper, 0, 0);
+    priv->contentsClipper = evas_object_rectangle_add(
+        evas_object_evas_get(ewkBackingStore));
+    evas_object_move(priv->contentsClipper, 0, 0);
 #if ENABLE(TIZEN_CAIRO_SCALE_PATCH)
     if (priv->view.tile.enable_scale)
         scale = priv->view.tile.zoom;
 #endif
 #if ENABLE(TIZEN_CAIRO_SCALE_PATCH)
-    evas_object_resize(priv->contents_clipper,
+    evas_object_resize(priv->contentsClipper,
                        priv->model.width * scale,
                        priv->model.height * scale);
 #else
-    evas_object_resize(priv->contents_clipper,
+    evas_object_resize(priv->contentsClipper,
                        priv->model.width, priv->model.height);
 #endif
-    evas_object_color_set(priv->contents_clipper, 255, 255, 255, 255);
-    evas_object_show(priv->contents_clipper);
-    evas_object_smart_member_add(priv->contents_clipper, ewkTile);
+    evas_object_color_set(priv->contentsClipper, 255, 255, 255, 255);
+    evas_object_show(priv->contentsClipper);
+    evas_object_smart_member_add(priv->contentsClipper, ewkBackingStore);
 
     _ewk_tiled_backing_store_model_matrix_create(priv, 0);
     evas_object_move(priv->base.clipper, 0, 0);
     evas_object_resize(priv->base.clipper, 0, 0);
-    evas_object_clip_set(priv->contents_clipper, priv->base.clipper);
+    evas_object_clip_set(priv->contentsClipper, priv->base.clipper);
 
 #ifdef DEBUG_MEM_LEAKS
-    priv->sig_usr = ecore_event_handler_add
+    priv->sigUsr = ecore_event_handler_add
                         (ECORE_EVENT_SIGNAL_USER, _ewk_tiled_backing_store_sig_usr, priv);
 #endif
 }
 
 #if ENABLE(TIZEN_SELECTIVE_RENDERING)
-static void _ewk_tiled_backing_store_free_cb(Evas_Object *o)
+static void _ewk_tiled_backing_store_free_cb(Evas_Object *ewkBackingStore)
 {
-    PRIV_DATA_GET_OR_RETURN(o, priv);
-    if (priv->render.selective_render.idler_enterer)
-       ecore_idle_enterer_del(priv->render.selective_render.idler_enterer);
-    priv->render.selective_render.idler_enterer = NULL;
+    PRIV_DATA_GET_OR_RETURN(ewkBackingStore, priv);
+    if (priv->render.selectiveRender.idlerEnterer)
+       ecore_idle_enterer_del(priv->render.selectiveRender.idlerEnterer);
+    priv->render.selectiveRender.idlerEnterer = NULL;
 }
 #endif
 
-static void _ewk_tiled_backing_store_smart_del(Evas_Object* ewkTile)
+static void _ewk_tiled_backing_store_smart_del(Evas_Object* ewkBackingStore)
 {
-    PRIV_DATA_GET_OR_RETURN(ewkTile, priv);
-    DBG("o=%p", ewkTile);
-    Ewk_Tile_Unused_Cache* tuc;
+    PRIV_DATA_GET_OR_RETURN(ewkBackingStore, priv);
+    DBG("ewkBackingStore%p", ewkBackingStore);
+    Ewk_Tile_Unused_Cache* tileUnusedCache;
 
-    tuc = ewk_tile_matrix_unused_cache_get(priv->model.matrix);
-    ewk_tile_unused_cache_unlock_area(tuc);
+    tileUnusedCache = ewk_tile_matrix_unused_cache_get(priv->model.matrix);
+    ewk_tile_unused_cache_unlock_area(tileUnusedCache);
 
-#if ENABLE(TIZEN_REPAINT_IDLER)
-    _ewk_tiled_backing_store_restore_idler_timer_stop(priv);
-    _ewk_tiled_backing_store_process_requests_flush(priv);
-    _ewk_tiled_backing_store_update_add_flush(priv);
-#elif !ENABLE(TIZEN_TILE_REUSE_ALREADY_CREATED)
+#if !ENABLE(TIZEN_TILE_REUSE_ALREADY_CREATED)
     _ewk_tiled_backing_store_flush(priv);
 #endif
 
@@ -1281,17 +1058,17 @@ static void _ewk_tiled_backing_store_smart_del(Evas_Object* ewkTile)
 #ifdef DEBUG_MEM_LEAKS
     _ewk_tiled_backing_store_mem_dbg(priv);
     if (priv->sig_usr)
-        priv->sig_usr = ecore_event_handler_del(priv->sig_usr);
+        ecore_event_handler_del(priv->sig_usr);
 #endif
 
     ewk_tile_matrix_free(priv->model.matrix);
-    evas_object_smart_member_del(priv->contents_clipper);
-    evas_object_del(priv->contents_clipper);
+    evas_object_smart_member_del(priv->contentsClipper);
+    evas_object_del(priv->contentsClipper);
 #if ENABLE(TIZEN_SELECTIVE_RENDERING)
-    _ewk_tiled_backing_store_free_cb(ewkTile);
+    _ewk_tiled_backing_store_free_cb(ewkBackingStore);
 #endif
 
-    _parent_sc.del(ewkTile);
+    _parent_sc.del(ewkBackingStore);
 
 #ifdef DEBUG_MEM_LEAKS
     printf("\nIMPORTANT: TILED BACKING STORE DELETED (may be real leaks)\n");
@@ -1299,27 +1076,27 @@ static void _ewk_tiled_backing_store_smart_del(Evas_Object* ewkTile)
 #endif
 }
 
-static void _ewk_tiled_backing_store_smart_move(Evas_Object* ewkTile, Evas_Coord x, Evas_Coord y)
+static void _ewk_tiled_backing_store_smart_move(Evas_Object* ewkBackingStore, Evas_Coord x, Evas_Coord y)
 {
-    DBG("o=%p, new pos: %dx%d", ewkTile, x, y);
+    DBG("ewkBackingStore%p, new pos: %dx%d", ewkBackingStore, x, y);
 
-    PRIV_DATA_GET_OR_RETURN(ewkTile, priv);
+    PRIV_DATA_GET_OR_RETURN(ewkBackingStore, priv);
 
-    if (priv->changed.pos)
+    if (priv->changed.position)
         return;
 
     if (priv->view.x == x && priv->view.y == y)
         return;
 
-    priv->changed.pos = EINA_TRUE;
+    priv->changed.position = true;
     _ewk_tiled_backing_store_changed(priv);
 }
 
-static void _ewk_tiled_backing_store_smart_resize(Evas_Object* ewkTile, Evas_Coord width, Evas_Coord height)
+static void _ewk_tiled_backing_store_smart_resize(Evas_Object* ewkBackingStore, Evas_Coord width, Evas_Coord height)
 {
-    DBG("o=%p, new size: %dx%d", ewkTile, width, height);
+    DBG("ewkBackingStore%p, new size: %dx%d", ewkBackingStore, width, height);
 
-    PRIV_DATA_GET_OR_RETURN(ewkTile, priv);
+    PRIV_DATA_GET_OR_RETURN(ewkBackingStore, priv);
 
     if (priv->changed.size)
         return;
@@ -1327,35 +1104,35 @@ static void _ewk_tiled_backing_store_smart_resize(Evas_Object* ewkTile, Evas_Coo
     if (priv->view.width == width && priv->view.height == height)
         return;
 
-    priv->changed.size = EINA_TRUE;
+    priv->changed.size = true;
     _ewk_tiled_backing_store_changed(priv);
 }
 
 static void _ewk_tiled_backing_store_recalc_renderers(Ewk_Tiled_Backing_Store_Data* priv, Evas_Coord width, Evas_Coord height, Evas_Coord tileWidth, Evas_Coord tileHeight)
 {
-    long cols, rows, old_rows, old_cols;
-    INF("o=%p, new size: %dx%d", priv->self, width, height);
+    long columns, rows, oldRows, oldCols;
+    INF("ewkBackingStore%p, new size: %dx%d", priv->self, width, height);
 
-    cols = 1 + (int)ceil((float)width / (float)tileWidth);
-    rows = 1 + (int)ceil((float)height / (float)tileHeight);
+    columns = 1 + static_cast<int>(ceil(width / static_cast<float>(tileWidth)));
+    rows = 1 + static_cast<int>(ceil(height / static_cast<float>(tileHeight)));
 
-    INF("o=%p new grid size cols: %ld, rows: %ld, was %ld, %ld",
-        priv->self, cols, rows, priv->view.cols, priv->view.rows);
+    INF("ewkBackingStore%p new grid size columns: %ld, rows: %ld, was %ld, %ld",
+        priv->self, columns, rows, priv->view.columns, priv->view.rows);
 
-    if (priv->view.cols == cols && priv->view.rows == rows)
+    if (priv->view.columns == columns && priv->view.rows == rows)
         return;
 
-    old_cols = priv->view.cols;
-    old_rows = priv->view.rows;
+    oldCols = priv->view.columns;
+    oldRows = priv->view.rows;
 
 #if ENABLE(TIZEN_TILED_CACHE_NEWIMP)
-    ewk_tile_matrix_view_size_set(priv->model.matrix, cols, rows);
+    ewk_tile_matrix_view_size_set(priv->model.matrix, columns, rows);
 #endif
 
-    if (rows < old_rows) {
+    if (rows < oldRows) {
         Eina_Inlist** start, **end;
         start = priv->view.items + rows;
-        end = priv->view.items + old_rows;
+        end = priv->view.items + oldRows;
         _ewk_tiled_backing_store_view_rows_range_del(priv, start, end);
     }
 
@@ -1365,36 +1142,36 @@ static void _ewk_tiled_backing_store_recalc_renderers(Ewk_Tiled_Backing_Store_Da
 
     priv->view.items = static_cast<Eina_Inlist**>(newItems);
     priv->view.rows = rows;
-    priv->view.cols = cols;
-    if (rows > old_rows) {
-        Eina_Inlist** start = priv->view.items + old_rows;
+    priv->view.columns = columns;
+    if (rows > oldRows) {
+        Eina_Inlist** start = priv->view.items + oldRows;
         Eina_Inlist** end = priv->view.items + rows;
         for (; start < end; start++) {
             *start = 0;
-            Eina_Bool r = _ewk_tiled_backing_store_view_cols_end_add(priv, start, 0, cols);
-            if (!r) {
-                CRITICAL("failed to allocate %ld columns", cols);
-                _ewk_tiled_backing_store_view_rows_range_del(priv, priv->view.items + old_rows, start);
-                priv->view.rows = old_rows;
+            Eina_Bool request = _ewk_tiled_backing_store_view_cols_end_add(priv, start, 0, columns);
+            if (!request) {
+                CRITICAL("failed to allocate %ld column", columns);
+                _ewk_tiled_backing_store_view_rows_range_del(priv, priv->view.items + oldRows, start);
+                priv->view.rows = oldRows;
                 return;
             }
         }
     }
 
-    if (cols != old_cols) {
-        int todo = cols - old_cols;
+    if (columns != oldCols) {
+        int todo = columns - oldCols;
         Eina_Inlist** start = priv->view.items;
-        Eina_Inlist** end = start + std::min(old_rows, rows);
+        Eina_Inlist** end = start + std::min(oldRows, rows);
         if (todo > 0) {
             for (; start < end; start++) {
-                Eina_Bool r = _ewk_tiled_backing_store_view_cols_end_add(priv, start, old_cols, todo);
-                if (!r) {
-                    CRITICAL("failed to allocate %d columns!", todo);
+                Eina_Bool result = _ewk_tiled_backing_store_view_cols_end_add(priv, start, oldCols, todo);
+                if (!result) {
+                    CRITICAL("failed to allocate %d column!", todo);
 
                     for (start--; start >= priv->view.items; start--)
                         _ewk_tiled_backing_store_view_cols_end_del(priv, start, todo);
-                    if (rows > old_rows) {
-                        start = priv->view.items + old_rows;
+                    if (rows > oldRows) {
+                        start = priv->view.items + oldRows;
                         end = priv->view.items + rows;
                         for (; start < end; start++)
                             _ewk_tiled_backing_store_view_cols_end_del(priv, start, todo);
@@ -1418,7 +1195,6 @@ static void _ewk_tiled_backing_store_smart_calculate_size(Ewk_Tiled_Backing_Stor
 
     priv->view.width = width;
     priv->view.height = height;
-
     _ewk_tiled_backing_store_recalc_renderers(
         priv, width, height, priv->view.tile.width, priv->view.tile.height);
 }
@@ -1428,26 +1204,26 @@ static inline void _ewk_tiled_backing_store_view_dbg(const Ewk_Tiled_Backing_Sto
 {
     Eina_Inlist** start, **end;
     printf("tiles=%2ld,%2ld  model=%2ld,%2ld [%dx%d] base=%+3ld,%+4ld offset=%+4d,%+4d old=%+4d,%+4d base=%+3d,%+3d\n",
-           priv->view.cols, priv->view.rows,
-           priv->model.cur.cols, priv->model.cur.rows,
+           priv->view.columns, priv->view.rows,
+           priv->model.current.columns, priv->model.current.rows,
            priv->model.width, priv->model.height,
-           priv->model.base.col, priv->model.base.row,
-           priv->view.offset.cur.x, priv->view.offset.cur.y,
+           priv->model.base.column, priv->model.base.row,
+           priv->view.offset.current.x, priv->view.offset.current.y,
            priv->view.offset.old.x, priv->view.offset.old.y,
            priv->view.offset.base.x, priv->view.offset.base.y);
 
     start = priv->view.items;
     end = priv->view.items + priv->view.rows;
     for (; start < end; start++) {
-        const Ewk_Tiled_Backing_Store_Item* it;
+        const Ewk_Tiled_Backing_Store_Item* item;
 
-        EINA_INLIST_FOREACH(*start, it) {
-            printf(" %+4d,%+4d ", it->geometry.x, it->geometry.y);
+        EINA_INLIST_FOREACH(*start, item) {
+            printf(" %+4d,%+4d ", item->geometry.x, item->geometry.y);
 
-            if (!it->tile)
+            if (!item->tile)
                 printf("            ;");
             else
-                printf("%8p %lu,%lu;", it->tile, it->tile->col, it->tile->row);
+                printf("%8p %lu,%lu;", item->tile, item->tile->col, item->tile->row);
         }
         printf("\n");
     }
@@ -1462,44 +1238,45 @@ static inline void _ewk_tiled_backing_store_view_dbg(const Ewk_Tiled_Backing_Sto
  * went out of screen is now at bottom and filled with new model items.
  *
  * This is worth just when @a count is smaller than @c
- * priv->view.rows, after that one is refilling the whole matrix so it
+ * priv->view.rows, after that one is refilling the whole matrix so item
  * is better to trigger full refill.
  *
  * @param count the number of times to repeat the process.
  */
 static void _ewk_tiled_backing_store_view_wrap_up(Ewk_Tiled_Backing_Store_Data* priv, Evas_Coord x, Evas_Coord y, unsigned int count)
 {
-    unsigned int last_row = priv->view.rows - 1;
-    Evas_Coord tw = priv->view.tile.width;
-    Evas_Coord th = priv->view.tile.height;
-    Evas_Coord off_y = priv->view.offset.base.y + count * th;
-    Evas_Coord oy = y + (last_row - count + 1) * th + off_y;
-    Eina_Inlist** itr_start, **itr_end;
+    unsigned int lastRow = priv->view.rows - 1;
+    Evas_Coord tileWidth = priv->view.tile.width;
+    Evas_Coord tileHeight = priv->view.tile.height;
+    Evas_Coord offsetY = priv->view.offset.base.y + count * tileHeight;
+    Evas_Coord tilePositionY = y + (lastRow - count + 1) * tileHeight + offsetY;
+    Eina_Inlist** iteratorStart, **iteratorEnd;
+    Evas_Coord originX = x + priv->view.offset.base.x;
 
-    itr_start = priv->view.items;
-    itr_end = itr_start + last_row;
+    iteratorStart = priv->view.items;
+    iteratorEnd = iteratorStart + lastRow;
 
     for (; count > 0; count--) {
-        Eina_Inlist** itr;
-        Eina_Inlist* tmp = *itr_start;
-        Ewk_Tiled_Backing_Store_Item* it;
-        Evas_Coord ox = x + priv->view.offset.base.x;
-        int c = 0;
+        Eina_Inlist** iteratorList;
+        Eina_Inlist* temp = *iteratorStart;
+        Ewk_Tiled_Backing_Store_Item* item;
+        Evas_Coord tilePositionX = originX;
+        int count1 = 0;
 
-        for (itr = itr_start; itr < itr_end; itr++)
-            *itr = *(itr + 1);
-        *itr = tmp;
+        for (iteratorList = iteratorStart; iteratorList < iteratorEnd; iteratorList++)
+            *iteratorList = *(iteratorList + 1);
+        *iteratorList = temp;
 
         priv->model.base.row++;
-        EINA_INLIST_FOREACH(tmp, it) {
-            _ewk_tiled_backing_store_item_move(it, ox, oy);
-            ox += tw;
-            _ewk_tiled_backing_store_item_fill(priv, it, c, last_row);
-            c++;
+        EINA_INLIST_FOREACH(temp, item) {
+            _ewk_tiled_backing_store_item_move(item, tilePositionX, tilePositionY);
+            tilePositionX += tileWidth;
+            _ewk_tiled_backing_store_item_fill(priv, item, count1, lastRow);
+            count1++;
         }
-        oy += th;
+        tilePositionY += tileHeight;
     }
-    priv->view.offset.base.y = off_y;
+    priv->view.offset.base.y = offsetY;
 }
 
 /**
@@ -1510,177 +1287,182 @@ static void _ewk_tiled_backing_store_view_wrap_up(Ewk_Tiled_Backing_Store_Data*
  * went out of screen is now at top and filled with new model items.
  *
  * This is worth just when @a count is smaller than @c
- * priv->view.rows, after that one is refilling the whole matrix so it
+ * priv->view.rows, after that one is refilling the whole matrix so item
  * is better to trigger full refill.
  *
  * @param count the number of times to repeat the process.
  */
 static void _ewk_tiled_backing_store_view_wrap_down(Ewk_Tiled_Backing_Store_Data* priv, Evas_Coord x, Evas_Coord y, unsigned int count)
 {
-    Evas_Coord tw = priv->view.tile.width;
-    Evas_Coord th = priv->view.tile.height;
-    Evas_Coord off_y = priv->view.offset.base.y - count * th;
-    Evas_Coord oy = y + off_y + (count - 1) * th;
-    Eina_Inlist** itr_start, **itr_end;
+    Evas_Coord tileWidth = priv->view.tile.width;
+    Evas_Coord tileHeight = priv->view.tile.height;
+    Evas_Coord offsetY = priv->view.offset.base.y - count * tileHeight;
+    Evas_Coord tilePositionY = y + offsetY + (count - 1) * tileHeight;
+    Eina_Inlist** iteratorStart, **iteratorEnd;
+    Evas_Coord originX = x + priv->view.offset.base.x;
 
-    itr_start = priv->view.items + priv->view.rows - 1;
-    itr_end = priv->view.items;
+    iteratorStart = priv->view.items + priv->view.rows - 1;
+    iteratorEnd = priv->view.items;
 
     for (; count > 0; count--) {
-        Eina_Inlist** itr;
-        Eina_Inlist* tmp = *itr_start;
-        Ewk_Tiled_Backing_Store_Item* it;
-        Evas_Coord ox = x + priv->view.offset.base.x;
-        int c = 0;
+        Eina_Inlist** iteratorList;
+        Eina_Inlist* temp = *iteratorStart;
+        Ewk_Tiled_Backing_Store_Item* item;
+        Evas_Coord tilePositionX = originX;
+        int count1 = 0;
 
-        for (itr = itr_start; itr > itr_end; itr--)
-            *itr = *(itr - 1);
-        *itr = tmp;
+        for (iteratorList = iteratorStart; iteratorList > iteratorEnd; iteratorList--)
+            *iteratorList = *(iteratorList - 1);
+        *iteratorList = temp;
 
         priv->model.base.row--;
-        EINA_INLIST_FOREACH(tmp, it) {
-            _ewk_tiled_backing_store_item_move(it, ox, oy);
-            ox += tw;
-            _ewk_tiled_backing_store_item_fill(priv, it, c, 0);
-            c++;
+        EINA_INLIST_FOREACH(temp, item) {
+            _ewk_tiled_backing_store_item_move(item, tilePositionX, tilePositionY);
+            tilePositionX += tileWidth;
+            _ewk_tiled_backing_store_item_fill(priv, item, count1, 0);
+            count1++;
         }
-        oy -= th;
+        tilePositionY -= tileHeight;
     }
-    priv->view.offset.base.y = off_y;
+    priv->view.offset.base.y = offsetY;
 }
 
 /**
  * @internal
  * Move left-most (first) column right as last (right-most).
  *
- * The final result is visually the same, but logically the first col that
+ * The final result is visually the same, but logically the first column that
  * went out of screen is now at last and filled with new model items.
  *
  * This is worth just when @a count is smaller than @c
- * priv->view.cols, after that one is refilling the whole matrix so it
+ * priv->view.columns, after that one is refilling the whole matrix so item
  * is better to trigger full refill.
  *
  * @param count the number of times to repeat the process.
  */
 static void _ewk_tiled_backing_store_view_wrap_left(Ewk_Tiled_Backing_Store_Data* priv, Evas_Coord x, Evas_Coord y, unsigned int count)
 {
-    unsigned int r, last_col = priv->view.cols - 1;
-    Evas_Coord tw = priv->view.tile.width;
-    Evas_Coord th = priv->view.tile.height;
-    Evas_Coord off_x = priv->view.offset.base.x + count * tw;
+    unsigned int row, lastColumn = priv->view.columns - 1;
+    Evas_Coord tileWidth = priv->view.tile.width;
+    Evas_Coord tileHeight = priv->view.tile.height;
+    Evas_Coord offsetX = priv->view.offset.base.x + count * tileWidth;
     Evas_Coord oy = y + priv->view.offset.base.y;
-    Eina_Inlist** itr;
-    Eina_Inlist** itr_end;
+    Eina_Inlist** iterator;
+    Eina_Inlist** iteratorEnd;
+    unsigned int baseColumn = lastColumn - count + 1;
+    Evas_Coord originX = x + baseColumn * tileWidth + offsetX;
 
-    itr = priv->view.items;
-    itr_end = itr + priv->view.rows;
-    r = 0;
+    iterator = priv->view.items;
+    iteratorEnd = iterator + priv->view.rows;
+    row = 0;
 
-    priv->model.base.col += count;
+    priv->model.base.column += count;
 
-    for (; itr < itr_end; itr++, r++) {
-        Evas_Coord ox = x + (last_col - count + 1) * tw + off_x;
-        unsigned int i, c = last_col - count + 1;
+    for (; iterator < iteratorEnd; iterator++, row++) {
+        Evas_Coord tilePositionX = originX;
+        unsigned int column = baseColumn;
 
-        for (i = 0; i < count; i++, c++, ox += tw) {
+        for (unsigned int i = 0; i < count; i++, column++, tilePositionX += tileWidth) {
             Ewk_Tiled_Backing_Store_Item* it;
-            it = EINA_INLIST_CONTAINER_GET(*itr, Ewk_Tiled_Backing_Store_Item);
-            *itr = eina_inlist_demote(*itr, *itr);
+            it = EINA_INLIST_CONTAINER_GET(*iterator, Ewk_Tiled_Backing_Store_Item);
+            *iterator = eina_inlist_demote(*iterator, *iterator);
 
-            _ewk_tiled_backing_store_item_move(it, ox, oy);
-            _ewk_tiled_backing_store_item_fill(priv, it, c, r);
+            _ewk_tiled_backing_store_item_move(it, tilePositionX, oy);
+            _ewk_tiled_backing_store_item_fill(priv, it, column, row);
         }
-        oy += th;
+        oy += tileHeight;
     }
 
-    priv->view.offset.base.x = off_x;
+    priv->view.offset.base.x = offsetX;
 }
 
 /**
  * @internal
  * Move right-most (last) column left as first (left-most).
  *
- * The final result is visually the same, but logically the last col that
+ * The final result is visually the same, but logically the last column that
  * went out of screen is now at first and filled with new model items.
  *
  * This is worth just when @a count is smaller than @c
- * priv->view.cols, after that one is refilling the whole matrix so it
+ * priv->view.columns, after that one is refilling the whole matrix so item
  * is better to trigger full refill.
  *
  * @param count the number of times to repeat the process.
  */
 static void _ewk_tiled_backing_store_view_wrap_right(Ewk_Tiled_Backing_Store_Data* priv, Evas_Coord x, Evas_Coord y, unsigned int count)
 {
-    unsigned int r;
-    Evas_Coord tw = priv->view.tile.width;
-    Evas_Coord th = priv->view.tile.height;
-    Evas_Coord off_x = priv->view.offset.base.x - count * tw;
-    Evas_Coord oy = y + priv->view.offset.base.y;
-    Eina_Inlist** itr, ** itr_end;
+    unsigned int row;
+    Evas_Coord tileWidth = priv->view.tile.width;
+    Evas_Coord tileHeight = priv->view.tile.height;
+    Evas_Coord offsetX = priv->view.offset.base.x - count * tileWidth;
+    Evas_Coord tilePositionY = y + priv->view.offset.base.y;
+    Eina_Inlist** iterator, ** iteratorEnd;
+    unsigned int baseColumn = count - 1;
+    Evas_Coord originX = x + baseColumn * tileWidth + offsetX;
 
-    itr = priv->view.items;
-    itr_end = itr + priv->view.rows;
-    r = 0;
+    iterator = priv->view.items;
+    iteratorEnd = iterator + priv->view.rows;
+    row = 0;
 
-    priv->model.base.col -= count;
+    priv->model.base.column -= count;
 
-    for (; itr < itr_end; itr++, r++) {
-        Evas_Coord ox = x + (count - 1) * tw + off_x;
-        unsigned int i, c = count - 1;
+    for (; iterator < iteratorEnd; iterator++, row++) {
+        Evas_Coord tilePositionX = originX;
+        unsigned int column = baseColumn;
 
-        for (i = 0; i < count; i++, c--, ox -= tw) {
-            Ewk_Tiled_Backing_Store_Item* it;
-            it = EINA_INLIST_CONTAINER_GET((*itr)->last, Ewk_Tiled_Backing_Store_Item);
-            *itr = eina_inlist_promote(*itr, (*itr)->last);
+        for (unsigned int i = 0; i < count; i++, column--, tilePositionX -= tileWidth) {
+            Ewk_Tiled_Backing_Store_Item* item;
+            item = EINA_INLIST_CONTAINER_GET((*iterator)->last, Ewk_Tiled_Backing_Store_Item);
+            *iterator = eina_inlist_promote(*iterator, (*iterator)->last);
 
-            _ewk_tiled_backing_store_item_move(it, ox, oy);
-            _ewk_tiled_backing_store_item_fill(priv, it, c, r);
+            _ewk_tiled_backing_store_item_move(item, tilePositionX, tilePositionY);
+            _ewk_tiled_backing_store_item_fill(priv, item, column, row);
         }
-        oy += th;
+        tilePositionY += tileHeight;
     }
 
-    priv->view.offset.base.x = off_x;
+    priv->view.offset.base.x = offsetX;
 }
 
 static void _ewk_tiled_backing_store_view_refill(Ewk_Tiled_Backing_Store_Data* priv, Evas_Coord x, Evas_Coord y, int stepX, int stepY)
 {
-    Eina_Inlist** itr, **itr_end;
-    Evas_Coord base_ox, oy, tw, th;
-    unsigned int r;
+    Eina_Inlist** iterator, **iteratorEnd;
+    Evas_Coord baseTilePositionX, tilePositionY, tileWidth, tileHeight;
+    unsigned int request;
 
     evas_object_move(priv->base.clipper, x, y);
 
-    tw = priv->view.tile.width;
-    th = priv->view.tile.height;
+    tileWidth = priv->view.tile.width;
+    tileHeight = priv->view.tile.height;
 
-    base_ox = x + priv->view.offset.base.x;
-    oy = y + priv->view.offset.base.y;
+    baseTilePositionX = x + priv->view.offset.base.x;
+    tilePositionY = y + priv->view.offset.base.y;
 
-    itr = priv->view.items;
-    itr_end = itr + priv->view.rows;
-    r = 0;
+    iterator = priv->view.items;
+    iteratorEnd = iterator + priv->view.rows;
+    request = 0;
 
-    priv->model.base.col -= stepX;
+    priv->model.base.column -= stepX;
     priv->model.base.row -= stepY;
 
-    for (; itr < itr_end; itr++, r++) {
-        Ewk_Tiled_Backing_Store_Item* it;
-        Evas_Coord ox = base_ox;
-        unsigned int c = 0;
-        EINA_INLIST_FOREACH(*itr, it) {
-            _ewk_tiled_backing_store_item_fill(priv, it, c, r);
-            _ewk_tiled_backing_store_item_move(it, ox, oy);
-            c++;
-            ox += tw;
+    for (; iterator < iteratorEnd; iterator++, request++) {
+        Ewk_Tiled_Backing_Store_Item* item;
+        Evas_Coord newTilePositionX = baseTilePositionX;
+        unsigned int count = 0;
+        EINA_INLIST_FOREACH(*iterator, item) {
+            _ewk_tiled_backing_store_item_fill(priv, item, count, request);
+            _ewk_tiled_backing_store_item_move(item, newTilePositionX, tilePositionY);
+            count++;
+            newTilePositionX += tileWidth;
         }
-        oy += th;
+        tilePositionY += tileHeight;
     }
 }
 
 static void _ewk_tiled_backing_store_view_pos_apply(Ewk_Tiled_Backing_Store_Data* priv, Evas_Coord x, Evas_Coord y)
 {
-    Eina_Inlist** itr, **itr_end;
-    Evas_Coord base_ox, oy, tw, th;
+    Eina_Inlist** iterator, **iteratorEnd;
+    Evas_Coord baseTilePositionX, baseTilePositionY, tileWidth, tileHeight;
 
 #if ENABLE(TIZEN_SKIP_MOVING_WHILE_WEAK_ZOOMING)
     int pos_x, pos_y, tile_width, tile_height;
@@ -1688,121 +1470,121 @@ static void _ewk_tiled_backing_store_view_pos_apply(Ewk_Tiled_Backing_Store_Data
 #endif
     evas_object_move(priv->base.clipper, x, y);
 
-    tw = priv->view.tile.width;
-    th = priv->view.tile.height;
+    tileWidth = priv->view.tile.width;
+    tileHeight = priv->view.tile.height;
 
-    base_ox = x + priv->view.offset.base.x;
-    oy = y + priv->view.offset.base.y;
+    baseTilePositionX = x + priv->view.offset.base.x;
+    baseTilePositionY = y + priv->view.offset.base.y;
 
-    itr = priv->view.items;
-    itr_end = itr + priv->view.rows;
-    for (; itr < itr_end; itr++) {
-        Ewk_Tiled_Backing_Store_Item* it;
-        Evas_Coord ox = base_ox;
-        EINA_INLIST_FOREACH(*itr, it) {
+    iterator = priv->view.items;
+    iteratorEnd = iterator + priv->view.rows;
+    for (; iterator < iteratorEnd; iterator++) {
+        Ewk_Tiled_Backing_Store_Item* item;
+        Evas_Coord ox = baseTilePositionX;
+        EINA_INLIST_FOREACH(*iterator, item) {
 #if ENABLE(TIZEN_SKIP_MOVING_WHILE_WEAK_ZOOMING)
-            if (it->tile) {
-                evas_object_geometry_get(it->tile->image, &pos_x, &pos_y, &tile_width, &tile_height);
+            if (item->tile) {
+                evas_object_geometry_get(item->tile->image, &pos_x, &pos_y, &tile_width, &tile_height);
                 if (tile_width != priv->view.tile.width || tile_height != priv->view.tile.height) {
-                    _ewk_tiled_backing_store_item_move(it, it->geometry.x, it->geometry.y);
-                    _ewk_tiled_backing_store_item_resize(it, it->geometry.width, it->geometry.height);
+                    _ewk_tiled_backing_store_item_move(item, item->geometry.x, item->geometry.y);
+                    _ewk_tiled_backing_store_item_resize(item, item->geometry.width, item->geometry.height);
                     continue;
                 }
             }
 #endif
-            _ewk_tiled_backing_store_item_move(it, ox, oy);
-            ox += tw;
+            _ewk_tiled_backing_store_item_move(item, ox, baseTilePositionY);
+            ox += tileWidth;
         }
-        oy += th;
+        baseTilePositionY += tileHeight;
     }
 }
 
 static void _ewk_tiled_backing_store_smart_calculate_offset_force(Ewk_Tiled_Backing_Store_Data* priv)
 {
-    Evas_Coord dx = priv->view.offset.cur.x - priv->view.offset.old.x;
-    Evas_Coord dy = priv->view.offset.cur.y - priv->view.offset.old.y;
-    Evas_Coord tw, th;
-    int step_y, step_x;
+    Evas_Coord deltaX = priv->view.offset.current.x - priv->view.offset.old.x;
+    Evas_Coord deltaY = priv->view.offset.current.y - priv->view.offset.old.y;
+    Evas_Coord tileWidth, tileHeight;
+    int stepY, stepX;
 
-    INF("o=%p, offset: %+4d, %+4d (%+4d, %+4d)",
-        priv->self, dx, dy, priv->view.offset.cur.x, priv->view.offset.cur.y);
+    INF("ewkBackingStore%p, offset: %+4d, %+4d (%+4d, %+4d)",
+        priv->self, deltaX, deltaY, priv->view.offset.current.x, priv->view.offset.current.y);
 
-    tw = priv->view.tile.width;
-    th = priv->view.tile.height;
+    tileWidth = priv->view.tile.width;
+    tileHeight = priv->view.tile.height;
 
-    long new_col = -priv->view.offset.cur.x / tw;
-    step_x = priv->model.base.col - new_col;
-    long new_row = -priv->view.offset.cur.y / th;
-    step_y = priv->model.base.row - new_row;
+    long newColumn = -priv->view.offset.current.x / tileWidth;
+    stepX = priv->model.base.column - newColumn;
+    long newRow = -priv->view.offset.current.y / tileHeight;
+    stepY = priv->model.base.row - newRow;
 
-    priv->view.offset.old.x = priv->view.offset.cur.x;
-    priv->view.offset.old.y = priv->view.offset.cur.y;
+    priv->view.offset.old.x = priv->view.offset.current.x;
+    priv->view.offset.old.y = priv->view.offset.current.y;
     evas_object_move(
-        priv->contents_clipper,
-        priv->view.offset.cur.x + priv->view.x,
-        priv->view.offset.cur.y + priv->view.y);
+        priv->contentsClipper,
+        priv->view.offset.current.x + priv->view.x,
+        priv->view.offset.current.y + priv->view.y);
 
-    priv->view.offset.base.x += dx - step_x * tw;
-    priv->view.offset.base.y += dy - step_y * th;
+    priv->view.offset.base.x += deltaX - stepX * tileWidth;
+    priv->view.offset.base.y += deltaY - stepY * tileHeight;
 
     _ewk_tiled_backing_store_view_refill
-        (priv, priv->view.x, priv->view.y, step_x, step_y);
+        (priv, priv->view.x, priv->view.y, stepX, stepY);
 }
 
 static void _ewk_tiled_backing_store_smart_calculate_offset(Ewk_Tiled_Backing_Store_Data* priv, Evas_Coord x, Evas_Coord y)
 {
-    Evas_Coord dx = priv->view.offset.cur.x - priv->view.offset.old.x;
-    Evas_Coord dy = priv->view.offset.cur.y - priv->view.offset.old.y;
-    Evas_Coord tw, th;
-    int step_y, step_x;
+    Evas_Coord deltaX = priv->view.offset.current.x - priv->view.offset.old.x;
+    Evas_Coord deltaY = priv->view.offset.current.y - priv->view.offset.old.y;
+    Evas_Coord tileWidth, tileHeight;
+    int stepY, stepX;
 
-    INF("o=%p, offset: %+4d, %+4d (%+4d, %+4d)",
-        priv->self, dx, dy, priv->view.offset.cur.x, priv->view.offset.cur.y);
+    INF("ewkBackingStore%p, offset: %+4d, %+4d (%+4d, %+4d)",
+        priv->self, deltaX, deltaY, priv->view.offset.current.x, priv->view.offset.current.y);
 
-    if (!dx && !dy)
+    if (!deltaX && !deltaY)
         return;
 
-    tw = priv->view.tile.width;
-    th = priv->view.tile.height;
+    tileWidth = priv->view.tile.width;
+    tileHeight = priv->view.tile.height;
 
-    long new_col = -priv->view.offset.cur.x / tw;
-    step_x = priv->model.base.col - new_col;
-    long new_row = -priv->view.offset.cur.y / th;
-    step_y = priv->model.base.row - new_row;
+    long newCol = -priv->view.offset.current.x / tileWidth;
+    stepX = priv->model.base.column - newCol;
+    long newRow = -priv->view.offset.current.y / tileHeight;
+    stepY = priv->model.base.row - newRow;
 
-    priv->view.offset.old.x = priv->view.offset.cur.x;
-    priv->view.offset.old.y = priv->view.offset.cur.y;
+    priv->view.offset.old.x = priv->view.offset.current.x;
+    priv->view.offset.old.y = priv->view.offset.current.y;
     evas_object_move(
-        priv->contents_clipper,
-        priv->view.offset.cur.x + priv->view.x,
-        priv->view.offset.cur.y + priv->view.y);
+        priv->contentsClipper,
+        priv->view.offset.current.x + priv->view.x,
+        priv->view.offset.current.y + priv->view.y);
 
-    if ((step_x < 0 && step_x <= -priv->view.cols)
-        || (step_x > 0 && step_x >= priv->view.cols)
-        || (step_y < 0 && step_y <= -priv->view.rows)
-        || (step_y > 0 && step_y >= priv->view.rows)) {
+    if ((stepX < 0 && stepX <= -priv->view.columns)
+        || (stepX > 0 && stepX >= priv->view.columns)
+        || (stepY < 0 && stepY <= -priv->view.rows)
+        || (stepY > 0 && stepY >= priv->view.rows)) {
 
-        priv->view.offset.base.x += dx - step_x * tw;
-        priv->view.offset.base.y += dy - step_y * th;
+        priv->view.offset.base.x += deltaX - stepX * tileWidth;
+        priv->view.offset.base.y += deltaY - stepY * tileHeight;
 
         _ewk_tiled_backing_store_view_refill
-            (priv, priv->view.x, priv->view.y, step_x, step_y);
+            (priv, priv->view.x, priv->view.y, stepX, stepY);
         return;
     }
 
-    priv->view.offset.base.x += dx;
-    priv->view.offset.base.y += dy;
+    priv->view.offset.base.x += deltaX;
+    priv->view.offset.base.y += deltaY;
 
 
-    if (step_y < 0)
-        _ewk_tiled_backing_store_view_wrap_up(priv, x, y, -step_y);
-    else if (step_y > 0)
-        _ewk_tiled_backing_store_view_wrap_down(priv, x, y, step_y);
+    if (stepY < 0)
+        _ewk_tiled_backing_store_view_wrap_up(priv, x, y, -stepY);
+    else if (stepY > 0)
+        _ewk_tiled_backing_store_view_wrap_down(priv, x, y, stepY);
 
-    if (step_x < 0)
-        _ewk_tiled_backing_store_view_wrap_left(priv, x, y, -step_x);
-    else if (step_x > 0)
-        _ewk_tiled_backing_store_view_wrap_right(priv, x, y, step_x);
+    if (stepX < 0)
+        _ewk_tiled_backing_store_view_wrap_left(priv, x, y, -stepX);
+    else if (stepX > 0)
+        _ewk_tiled_backing_store_view_wrap_right(priv, x, y, stepX);
 
     _ewk_tiled_backing_store_view_pos_apply(priv, x, y);
 }
@@ -1813,41 +1595,41 @@ static void _ewk_tiled_backing_store_smart_calculate_pos(Ewk_Tiled_Backing_Store
     priv->view.x = x;
     priv->view.y = y;
     evas_object_move(
-        priv->contents_clipper,
-        priv->view.offset.cur.x + priv->view.x,
-        priv->view.offset.cur.y + priv->view.y);
+        priv->contentsClipper,
+        priv->view.offset.current.x + priv->view.x,
+        priv->view.offset.current.y + priv->view.y);
 }
 
 static void _ewk_tiled_backing_store_fill_renderers(Ewk_Tiled_Backing_Store_Data* priv)
 {
-    Eina_Inlist* it;
+    Eina_Inlist* list;
     Ewk_Tiled_Backing_Store_Item* item;
     int i, j;
 
     for (i = 0; i < priv->view.rows; i++) {
-        it = priv->view.items[i];
+        list = priv->view.items[i];
         j = 0;
-        EINA_INLIST_FOREACH(it, item)
+        EINA_INLIST_FOREACH(list, item)
             _ewk_tiled_backing_store_item_fill(priv, item, j++, i);
     }
 }
 
-static void _ewk_tiled_backing_store_smart_calculate(Evas_Object* ewkTile)
+static void _ewk_tiled_backing_store_smart_calculate(Evas_Object* ewkBackingStore)
 {
-    Evas_Coord x, y, w, h;
+    Evas_Coord x, y, width, height;
 
-    evas_object_geometry_get(ewkTile, &x, &y, &w, &h);
-    DBG("o=%p at %d,%d + %dx%d", ewkTile, x, y, w, h);
+    evas_object_geometry_get(ewkBackingStore, &x, &y, &width, &height);
+    DBG("ewkBackingStore%p at %d,%d + %dx%d", ewkBackingStore, x, y, width, height);
 
-    PRIV_DATA_GET_OR_RETURN(ewkTile, priv);
+    PRIV_DATA_GET_OR_RETURN(ewkBackingStore, priv);
 
 #if ENABLE(TIZEN_FIX_EMAIL_ONE_TILE_DISPLAY)
 #if ENABLE(TIZEN_TILE_MATRIX_LIST)
-    if (priv->changed.need_layout && priv->changed.layout)
-        priv->changed.need_layout = EINA_FALSE;
+    if (priv->changed.needLayout && priv->changed.layout)
+        priv->changed.needLayout = EINA_FALSE;
 #endif
 #endif
-    priv->changed.any = EINA_FALSE;
+    priv->changed.any = false;
 #if ENABLE(TIZEN_CTBS_ZOOMING_FIX)
     Eina_Bool zoom_set = (priv->changed.size && priv->changed.model);
 #endif
@@ -1860,10 +1642,9 @@ static void _ewk_tiled_backing_store_smart_calculate(Evas_Object* ewkTile)
 #if ENABLE(TIZEN_CLEAN_AFTER_RELAYOUT_FIX)
         // Do some cleaning
         // This fixes issue with old tiles being visible after screen orientation change.
-        Ewk_Tile_Unused_Cache *tuc = ewk_tile_matrix_unused_cache_get(priv->model.matrix);
-        ewk_tile_unused_cache_unlock_area(tuc);
-        ewk_tile_unused_cache_clear(tuc);
-
+        Ewk_Tile_Unused_Cache *tileUnusedCache = ewk_tile_matrix_unused_cache_get(priv->model.matrix);
+        ewk_tile_unused_cache_unlock_area(tileUnusedCache);
+        ewk_tile_unused_cache_clear(tileUnusedCache);
 #if ENABLE(TIZEN_CAIRO_SCALE_PATCH)
         _ewk_tiled_backing_store_pre_render_request_flush(priv);
 #endif
@@ -1876,43 +1657,43 @@ static void _ewk_tiled_backing_store_smart_calculate(Evas_Object* ewkTile)
 #else
     if (!priv->render.suspend && priv->changed.model) {
 #endif
-        unsigned long cols, rows;
+        unsigned long columns, rows;
 #if ENABLE(TIZEN_CAIRO_SCALE_PATCH)
         float scale = 1.0;
 
         if (priv->view.tile.enable_scale)
             scale = priv->view.tile.zoom;
 
-        cols = priv->model.width * scale / priv->view.tile.width + 1;
+        columns = priv->model.width * scale / priv->view.tile.width + 1;
         rows = priv->model.height * scale / priv->view.tile.height + 1;
 #else
-        cols = priv->model.width / priv->view.tile.width + 1;
+        columns = priv->model.width / priv->view.tile.width + 1;
         rows = priv->model.height / priv->view.tile.height + 1;
 
 #endif
-        priv->model.old.cols = priv->model.cur.cols;
-        priv->model.old.rows = priv->model.cur.rows;
-        priv->model.cur.cols = cols;
-        priv->model.cur.rows = rows;
-        if (priv->model.old.cols > cols)
-            cols = priv->model.old.cols;
+        priv->model.old.columns = priv->model.current.columns;
+        priv->model.old.rows = priv->model.current.rows;
+        priv->model.current.columns = columns;
+        priv->model.current.rows = rows;
+        if (priv->model.old.columns > columns)
+            columns = priv->model.old.columns;
         if (priv->model.old.rows > rows)
             rows = priv->model.old.rows;
-        ewk_tile_matrix_resize(priv->model.matrix, cols, rows);
+        ewk_tile_matrix_resize(priv->model.matrix, columns, rows);
     }
 
-    if (priv->changed.pos && (priv->view.x != x || priv->view.y != y)) {
+    if (priv->changed.position && (priv->view.x != x || priv->view.y != y)) {
         _ewk_tiled_backing_store_smart_calculate_pos(priv, x, y);
-        priv->changed.pos = EINA_FALSE;
+        priv->changed.position = false;
     }
     if (priv->changed.offset) {
         _ewk_tiled_backing_store_smart_calculate_offset(priv, x, y);
-        priv->changed.offset = EINA_FALSE;
+        priv->changed.offset = false;
     }
 
     if (priv->changed.size) {
-        _ewk_tiled_backing_store_smart_calculate_size(priv, w, h);
-        priv->changed.size = EINA_FALSE;
+        _ewk_tiled_backing_store_smart_calculate_size(priv, width, height);
+        priv->changed.size = false;
     }
 
 #if ENABLE(TIZEN_TILE_MATRIX_LIST)
@@ -1930,18 +1711,18 @@ static void _ewk_tiled_backing_store_smart_calculate(Evas_Object* ewkTile)
         rect.h = priv->model.height;
         _ewk_tiled_backing_store_fill_renderers(priv);
         ewk_tile_matrix_resize(priv->model.matrix,
-                               priv->model.cur.cols,
-                               priv->model.cur.rows);
+                               priv->model.current.columns,
+                               priv->model.current.rows);
         priv->changed.model = EINA_FALSE;
 #if ENABLE(TIZEN_CAIRO_SCALE_PATCH)
         if (priv->view.tile.enable_scale)
             scale = priv->view.tile.zoom;
         evas_object_resize(
-            priv->contents_clipper,
+            priv->contentsClipper,
             priv->model.width * scale,
             priv->model.height * scale);
 #else
-        evas_object_resize(priv->contents_clipper, priv->model.width, priv->model.height);
+        evas_object_resize(priv->contentsClipper, priv->model.width, priv->model.height);
 #endif
         _ewk_tiled_backing_store_smart_calculate_offset_force(priv);
     }
@@ -1958,14 +1739,14 @@ static void _ewk_tiled_backing_store_smart_calculate(Evas_Object* ewkTile)
         || priv->view.offset.base.x <= - priv->view.tile.width
         || priv->view.offset.base.y > 0
         || priv->view.offset.base.y <= - priv->view.tile.height)
-        ERR("incorrect base offset %+4d,%+4d, tile=%dx%d, cur=%+4d,%+4d\n",
+        ERR("incorrect base offset %+4d,%+4d, tile=%dx%d, current=%+4d,%+4d\n",
             priv->view.offset.base.x, priv->view.offset.base.y,
             priv->view.tile.width, priv->view.tile.height,
-            priv->view.offset.cur.x, priv->view.offset.cur.y);
+            priv->view.offset.current.x, priv->view.offset.current.y);
 
 #if ENABLE(TIZEN_CTBS_ZOOMING_FIX)
     if (zoom_set)
-        evas_object_smart_callback_call(ewkTile, "zoom,set", (void *)&priv->view.tile.zoom);
+        evas_object_smart_callback_call(ewkBackingStore, "zoom,set", (void *)&priv->view.tile.zoom);
 #endif
 }
 
@@ -1973,27 +1754,27 @@ static void _ewk_tiled_backing_store_smart_calculate(Evas_Object* ewkTile)
 static Eina_Bool _ewk_tiled_backing_store_selective_render_pan_cb(void *data)
 {
     Ewk_Tiled_Backing_Store_Data *priv = (Ewk_Tiled_Backing_Store_Data *)data;
-    priv->render.selective_render.render_on_next = EINA_TRUE;
+    priv->render.selectiveRender.renderOnNext = EINA_TRUE;
 
     _ewk_tiled_backing_store_updates_process(priv);
 
     return ECORE_CALLBACK_RENEW;
 }
 
-Eina_Bool ewk_tiled_backing_store_selective_rendering_set(Evas_Object *o, Eina_Bool value)
+Eina_Bool ewk_tiled_backing_store_selective_rendering_set(Evas_Object *ewkBackingStore, Eina_Bool value)
 {
-    PRIV_DATA_GET_OR_RETURN(o, priv, EINA_FALSE);
-    if (priv->render.selective_render.enabled == value)
+    PRIV_DATA_GET_OR_RETURN(ewkBackingStore, priv, EINA_FALSE);
+    if (priv->render.selectiveRender.enabled == value)
         return EINA_FALSE;
 
-    priv->render.selective_render.enabled = value;
-    priv->render.selective_render.render_on_next = value;
+    priv->render.selectiveRender.enabled = value;
+    priv->render.selectiveRender.renderOnNext = value;
 
     if (value) {
-        if (!priv->render.selective_render.idler_enterer)
-            priv->render.selective_render.idler_enterer = ecore_idle_enterer_add(_ewk_tiled_backing_store_selective_render_pan_cb, priv);
+        if (!priv->render.selectiveRender.idlerEnterer)
+            priv->render.selectiveRender.idlerEnterer = ecore_idle_enterer_add(_ewk_tiled_backing_store_selective_render_pan_cb, priv);
     } else {
-        _ewk_tiled_backing_store_free_cb(o);
+        _ewk_tiled_backing_store_free_cb(ewkBackingStore);
         // Fix for the new tab creation bug when user set the both default page setting and fast rendering mode on : MAR-08-2011
         // Must make sure whether this can cause additional tile drawing or not
         ewk_tile_matrix_updates_process(priv->model.matrix);
@@ -2002,10 +1783,10 @@ Eina_Bool ewk_tiled_backing_store_selective_rendering_set(Evas_Object *o, Eina_B
     return EINA_TRUE;
 }
 
-Eina_Bool ewk_tiled_backing_store_selective_rendering_is_enabled(Evas_Object *o)
+Eina_Bool ewk_tiled_backing_store_selective_rendering_is_enabled(Evas_Object *ewkBackingStore)
 {
-    PRIV_DATA_GET_OR_RETURN(o, priv, EINA_FALSE);
-    return priv->render.selective_render.enabled;
+    PRIV_DATA_GET_OR_RETURN(ewkBackingStore, priv, EINA_FALSE);
+    return priv->render.selectiveRender.enabled;
 }
 #endif
 
@@ -2042,30 +1823,30 @@ Evas_Object* ewk_tiled_backing_store_add(Evas* canvas)
     return evas_object_smart_add(canvas, smart);
 }
 
-void ewk_tiled_backing_store_render_cb_set(Evas_Object* ewkTile, Eina_Bool (*callback)(void* data, Ewk_Tile* tile, const Eina_Rectangle* area), const void* data)
+void ewk_tiled_backing_store_render_cb_set(Evas_Object* ewkBackingStore, Eina_Bool (*callback)(void* data, Ewk_Tile* tile, const Eina_Rectangle* area), const void* data)
 {
     EINA_SAFETY_ON_NULL_RETURN(callback);
-    PRIV_DATA_GET_OR_RETURN(ewkTile, priv);
-    priv->render.cb = callback;
+    PRIV_DATA_GET_OR_RETURN(ewkBackingStore, priv);
+    priv->render.callback = callback;
     priv->render.data = (void*)data;
 }
 
-Ewk_Tile_Unused_Cache* ewk_tiled_backing_store_tile_unused_cache_get(const Evas_Object* ewkTile)
+Ewk_Tile_Unused_Cache* ewk_tiled_backing_store_tile_unused_cache_get(const Evas_Object* ewkBackingStore)
 {
-    PRIV_DATA_GET_OR_RETURN(ewkTile, priv, 0);
+    PRIV_DATA_GET_OR_RETURN(ewkBackingStore, priv, 0);
     return ewk_tile_matrix_unused_cache_get(priv->model.matrix);
 }
 
-void ewk_tiled_backing_store_tile_unused_cache_set(Evas_Object* ewkTile, Ewk_Tile_Unused_Cache* tileUnusedCache)
+void ewk_tiled_backing_store_tile_unused_cache_set(Evas_Object* ewkBackingStore, Ewk_Tile_Unused_Cache* tileUnusedCache)
 {
-    PRIV_DATA_GET_OR_RETURN(ewkTile, priv);
+    PRIV_DATA_GET_OR_RETURN(ewkBackingStore, priv);
 
     if (ewk_tile_matrix_unused_cache_get(priv->model.matrix) == tileUnusedCache)
         return;
 
 #if ENABLE(TIZEN_TILED_GLOBAL_CACHE_MANAGEMENT)
     if (evas_object_evas_get(priv->self) != ewk_tile_unused_cache_get_evas(tileUnusedCache)) {
-        ERR("CTBS: can not set cache (%p) to webview (%p) due to diffrent evas object.", tileUnusedCache, ewkTile);
+        ERR("CTBS: can not set cache (%p) to webview (%p) due to diffrent evas object.", tileUnusedCache, ewkBackingStore);
         return;
     }
 #endif
@@ -2076,53 +1857,48 @@ static Eina_Bool _ewk_tiled_backing_store_scroll_full_offset_set_internal(Ewk_Ti
 {
     /* TODO: check offset go out of bounds, clamp */
     if (priv->render.disabled)
-        return EINA_FALSE;
+        return false;
 
-    priv->view.offset.cur.x = x;
-    priv->view.offset.cur.y = y;
+    priv->view.offset.current.x = x;
+    priv->view.offset.current.y = y;
 
-    priv->changed.offset = EINA_TRUE;
+    priv->changed.offset = true;
     _ewk_tiled_backing_store_changed(priv);
 
-    return EINA_TRUE;
+    return true;
 }
 
-Eina_Bool ewk_tiled_backing_store_scroll_full_offset_set(Evas_Object* ewkTile, Evas_Coord x, Evas_Coord y)
+Eina_Bool ewk_tiled_backing_store_scroll_full_offset_set(Evas_Object* ewkBackingStore, Evas_Coord x, Evas_Coord y)
 {
-    DBG("o=%p, x=%d, y=%d", ewkTile, x, y);
+    DBG("ewkBackingStore%p, x=%d, y=%d", ewkBackingStore, x, y);
 
-    PRIV_DATA_GET_OR_RETURN(ewkTile, priv, EINA_FALSE);
-    if (x == priv->view.offset.cur.x && y == priv->view.offset.cur.y)
-        return EINA_TRUE;
+    PRIV_DATA_GET_OR_RETURN(ewkBackingStore, priv, false);
+    if (x == priv->view.offset.current.x && y == priv->view.offset.current.y)
+        return true;
 
     return _ewk_tiled_backing_store_scroll_full_offset_set_internal(priv, x, y);
 }
 
-Eina_Bool ewk_tiled_backing_store_scroll_full_offset_add(Evas_Object* ewkTile, Evas_Coord dx, Evas_Coord dy)
+Eina_Bool ewk_tiled_backing_store_scroll_full_offset_add(Evas_Object* ewkBackingStore, Evas_Coord deltaX, Evas_Coord deltaY)
 {
-    DBG("o=%p, dx=%d, dy=%d", ewkTile, dx, dy);
+    DBG("ewkBackingStore%p, deltaX=%d, deltaY=%d", ewkBackingStore, deltaX, deltaY);
 
-    PRIV_DATA_GET_OR_RETURN(ewkTile, priv, EINA_FALSE);
-    if (!dx && !dy)
-        return EINA_TRUE;
+    PRIV_DATA_GET_OR_RETURN(ewkBackingStore, priv, false);
+    if (!deltaX && !deltaY)
+        return true;
 
     return _ewk_tiled_backing_store_scroll_full_offset_set_internal
-               (priv, priv->view.offset.cur.x + dx, priv->view.offset.cur.y + dy);
+               (priv, priv->view.offset.current.x + deltaX, priv->view.offset.current.y + deltaY);
 }
 
 #if ENABLE(TIZEN_TILE_SIZE_SET)
 static void _ewk_tiled_backing_store_flush_tiles(Ewk_Tiled_Backing_Store_Data *priv)
 {
-    Ewk_Tile_Unused_Cache *tuc;
-#if ENABLE(TIZEN_REPAINT_IDLER)
-    _ewk_tiled_backing_store_restore_idler_timer_stop(priv);
-    _ewk_tiled_backing_store_process_requests_flush(priv);
-    _ewk_tiled_backing_store_update_add_flush(priv);
-#endif
+    Ewk_Tile_Unused_Cache *tileUnusedCache;
     _ewk_tiled_backing_store_pre_render_request_flush(priv);
     _ewk_tiled_backing_store_tile_dissociate_all(priv);
-    tuc = ewk_tile_matrix_unused_cache_get(priv->model.matrix);
-    ewk_tile_unused_cache_clear(tuc);
+    tileUnusedCache = ewk_tile_matrix_unused_cache_get(priv->model.matrix);
+    ewk_tile_unused_cache_clear(tileUnusedCache);
 }
 
 static void _ewk_tiled_backing_store_recalc_and_reposition_renderers(Ewk_Tiled_Backing_Store_Data *priv)
@@ -2133,37 +1909,37 @@ static void _ewk_tiled_backing_store_recalc_and_reposition_renderers(Ewk_Tiled_B
     _ewk_tiled_backing_store_recalc_renderers(
         priv, w, h, priv->view.tile.width, priv->view.tile.height);
 
-    Evas_Coord base_ox, oy, tw, th;
-    unsigned int r;
-    Eina_Inlist **itr, **itr_end;
+    Evas_Coord base_ox, oy, tileWidth, tileHeight;
+    unsigned int request;
+    Eina_Inlist **iterator, **iteratorEnd;
 
-    tw = priv->view.tile.width;
-    th = priv->view.tile.height;
+    tileWidth = priv->view.tile.width;
+    tileHeight = priv->view.tile.height;
 
-    priv->model.base.row = -priv->view.offset.cur.y / th;
-    priv->model.base.col = -priv->view.offset.cur.x / tw;
-    priv->view.offset.base.x = priv->view.offset.cur.x % tw;
-    priv->view.offset.base.y = priv->view.offset.cur.y % th;
+    priv->model.base.row = -priv->view.offset.current.y / tileHeight;
+    priv->model.base.column = -priv->view.offset.current.x / tileWidth;
+    priv->view.offset.base.x = priv->view.offset.current.x % tileWidth;
+    priv->view.offset.base.y = priv->view.offset.current.y % tileHeight;
 
     base_ox = x + priv->view.offset.base.x;
     oy = y + priv->view.offset.base.y;
 
-    itr = priv->view.items;
-    itr_end = itr + priv->view.rows;
-    r = 0;
+    iterator = priv->view.items;
+    iteratorEnd = iterator + priv->view.rows;
+    request = 0;
 
-    for (; itr < itr_end; itr++, r++) {
-        Ewk_Tiled_Backing_Store_Item *it;
+    for (; iterator < iteratorEnd; iterator++, request++) {
+        Ewk_Tiled_Backing_Store_Item *item;
         Evas_Coord ox = base_ox;
         unsigned int c = 0;
-        EINA_INLIST_FOREACH(*itr, it) {
-            _ewk_tiled_backing_store_item_fill(priv, it, c, r);
-            _ewk_tiled_backing_store_item_move(it, ox, oy);
-            _ewk_tiled_backing_store_item_resize(it, tw, th);
+        EINA_INLIST_FOREACH(*iterator, item) {
+            _ewk_tiled_backing_store_item_fill(priv, item, c, request);
+            _ewk_tiled_backing_store_item_move(item, ox, oy);
+            _ewk_tiled_backing_store_item_resize(item, tileWidth, tileHeight);
             c++;
-            ox += tw;
+            ox += tileWidth;
         }
-        oy += th;
+        oy += tileHeight;
     }
 }
 #endif
@@ -2173,28 +1949,28 @@ static Eina_Bool _ewk_tiled_backing_store_zoom_set_internal(Ewk_Tiled_Backing_St
 #if ENABLE(TIZEN_CAIRO_SCALE_PATCH)
     float multiplier = 1.0;
 #endif
-    *offsetX = priv->view.offset.cur.x;
-    *offsetY = priv->view.offset.cur.y;
+    *offsetX = priv->view.offset.current.x;
+    *offsetY = priv->view.offset.current.y;
 
     if (fabsf(priv->view.tile.zoom - *zoom) < ZOOM_STEP_MIN) {
         DBG("ignored as zoom difference is < %f: %f",
             (double)ZOOM_STEP_MIN, fabsf(priv->view.tile.zoom - *zoom));
 #if ENABLE(TIZEN_ZOOM_SET_INTERNAL_FIX)
-/* We don't want to return here as we want to emit 'zoom,set' signal even if there were no zoom changes.
+/* We don'tile want to return here as we want to emit 'zoom,set' signal even if there were no zoom changes.
    Behavior similar to tbs1 */
 #else
-        return EINA_TRUE;
+        return true;
 #endif
     }
-#if !ENABLE(TIZEN_LOCAL_DIFF)
+#if !ENABLE(TIZEN_TILE_BASECODE)
     _ewk_tiled_backing_store_pre_render_request_flush(priv);
 #endif
-    Evas_Coord tw, th;
+    Evas_Coord tileWidth, tileHeight;
 
     *zoom = ROUNDED_ZOOM(priv->view.tile.width, *zoom);
 
-    tw = priv->view.tile.width;
-    th = priv->view.tile.height;
+    tileWidth = priv->view.tile.width;
+    tileHeight = priv->view.tile.height;
 
     float scale = *zoom / priv->view.tile.zoom;
 
@@ -2207,8 +1983,8 @@ static Eina_Bool _ewk_tiled_backing_store_zoom_set_internal(Ewk_Tiled_Backing_St
 
     priv->view.tile.zoom = *zoom;
     // todo: check currentX [0, w]...
-    priv->view.offset.zoom_center.x = currentX;
-    priv->view.offset.zoom_center.y = currentY;
+    priv->view.offset.zoomCenter.x = currentX;
+    priv->view.offset.zoomCenter.y = currentY;
 
 #if ENABLE(TIZEN_REMOVE_ONE_REMAIN_TILE)
     if (!priv->view.width || !priv->view.height)
@@ -2223,132 +1999,99 @@ static Eina_Bool _ewk_tiled_backing_store_zoom_set_internal(Ewk_Tiled_Backing_St
         priv->view.offset.base.y = 0;
         return EINA_TRUE;
     }
-    Eina_Inlist** itr, **itr_end;
-    Ewk_Tiled_Backing_Store_Item* it;
+    Eina_Inlist** iterator, **iteratorEnd;
+    Ewk_Tiled_Backing_Store_Item* item;
 
-    Evas_Coord new_x = currentX + (priv->view.offset.cur.x - currentX) * scale;
-    Evas_Coord new_y = currentY + (priv->view.offset.cur.y - currentY) * scale;
+    Evas_Coord newX = currentX + (priv->view.offset.current.x - currentX) * scale;
+    Evas_Coord newY = currentY + (priv->view.offset.current.y - currentY) * scale;
 #if ENABLE(TIZEN_CAIRO_SCALE_PATCH)
-    Evas_Coord model_w;
-    Evas_Coord model_h;
+    Evas_Coord modelWidth;
+    Evas_Coord modelHeight;
 
     if (priv->view.tile.enable_scale) {
         multiplier = priv->view.tile.zoom;
-        model_w = priv->model.width * multiplier;
-        model_h = priv->model.height * multiplier;
+        modelWidth = priv->model.width * multiplier;
+        modelHeight = priv->model.height * multiplier;
     } else {
-        model_w = priv->model.width * scale;
-        model_h = priv->model.height * scale;
+        modelWidth = priv->model.width * scale;
+        modelHeight = priv->model.height * scale;
     }
-    evas_object_resize(priv->contents_clipper,
+    evas_object_resize(priv->contentsClipper,
                        priv->model.width * multiplier,
                        priv->model.height * multiplier);
 #else
-    Evas_Coord model_w = priv->model.width * scale;
-    Evas_Coord model_h = priv->model.height * scale;
+    Evas_Coord modelWidth = priv->model.width * scale;
+    Evas_Coord modelHeight = priv->model.height * scale;
 #endif
 
-    if (model_w < priv->view.width || new_x >= 0)
-        new_x = 0;
-    else if (-new_x + priv->view.width >= model_w)
-        new_x = -model_w + priv->view.width;
+    if (modelWidth < priv->view.width || newX >= 0)
+        newX = 0;
+    else if (-newX + priv->view.width >= modelWidth)
+        newX = -modelWidth + priv->view.width;
 
-    if (model_h < priv->view.height || new_y >= 0)
-        new_y = 0;
-    else if (-new_y + priv->view.height >= model_h)
-        new_y = -model_h + priv->view.height;
+    if (modelHeight < priv->view.height || newY >= 0)
+        newY = 0;
+    else if (-newY + priv->view.height >= modelHeight)
+        newY = -modelHeight + priv->view.height;
 
-    priv->model.base.col = - new_x / tw;
-    priv->model.base.row = - new_y / th;
+    priv->model.base.column = - newX / tileWidth;
+    priv->model.base.row = - newY / tileHeight;
 
-    priv->changed.size = EINA_TRUE;
-    priv->changed.model = EINA_TRUE;
+    priv->changed.size = true;
+    priv->changed.model = true;
     _ewk_tiled_backing_store_changed(priv);
 
-    priv->view.offset.cur.x = new_x;
-    priv->view.offset.cur.y = new_y;
-    priv->view.offset.base.x = new_x % tw;
-    priv->view.offset.base.y = new_y % th;
+    priv->view.offset.current.x = newX;
+    priv->view.offset.current.y = newY;
+    priv->view.offset.base.x = newX % tileWidth;
+    priv->view.offset.base.y = newY % tileHeight;
 
-    priv->view.offset.old.x = priv->view.offset.cur.x;
-    priv->view.offset.old.y = priv->view.offset.cur.y;
-    *offsetX = priv->view.offset.cur.x;
-    *offsetY = priv->view.offset.cur.y;
+    priv->view.offset.old.x = priv->view.offset.current.x;
+    priv->view.offset.old.y = priv->view.offset.current.y;
+    *offsetX = priv->view.offset.current.x;
+    *offsetY = priv->view.offset.current.y;
 
     evas_object_move(
-        priv->contents_clipper,
-        new_x + priv->view.x,
-        new_y + priv->view.y);
+        priv->contentsClipper,
+        newX + priv->view.x,
+        newY + priv->view.y);
 
     _ewk_tiled_backing_store_fill_renderers(priv);
 
-    Evas_Coord oy = priv->view.offset.base.y + priv->view.y;
-    Evas_Coord base_ox = priv->view.x + priv->view.offset.base.x;
+    Evas_Coord tilePositionY = priv->view.offset.base.y + priv->view.y;
+    Evas_Coord baseTilePositionX = priv->view.x + priv->view.offset.base.x;
 
-    itr = priv->view.items;
-    itr_end = itr + priv->view.rows;
+    iterator = priv->view.items;
+    iteratorEnd = iterator + priv->view.rows;
 
-    for (; itr < itr_end; itr++) {
-        Evas_Coord ox = base_ox;
-        Eina_Inlist* lst = *itr;
+    for (; iterator < iteratorEnd; iterator++) {
+        Evas_Coord tilePositionX = baseTilePositionX;
+        Eina_Inlist* lst = *iterator;
 
-        EINA_INLIST_FOREACH(lst, it) {
-            _ewk_tiled_backing_store_item_move(it, ox, oy);
-            _ewk_tiled_backing_store_item_resize(it, tw, th);
-            ox += tw;
+        EINA_INLIST_FOREACH(lst, item) {
+            _ewk_tiled_backing_store_item_move(item, tilePositionX, tilePositionY);
+            _ewk_tiled_backing_store_item_resize(item, tileWidth, tileHeight);
+            tilePositionX += tileWidth;
         }
-        oy += th;
+        tilePositionY += tileHeight;
     }
 
-#if ENABLE(TIZEN_REPAINT_IDLER)
-    priv->render.next_no_idler = EINA_TRUE;
-#endif
     return EINA_TRUE;
 }
 
-#if ENABLE(TIZEN_REPAINT_IDLER)
-Eina_Bool _ewk_tiled_backing_store_restore_idler_cb(void *data)
+Eina_Bool ewk_tiled_backing_store_zoom_set(Evas_Object* ewkBackingStore, float* zoom, Evas_Coord currentX, Evas_Coord currentY, Evas_Coord* offsetX, Evas_Coord* offsetY)
 {
-    Ewk_Tiled_Backing_Store_Data *priv = static_cast<Ewk_Tiled_Backing_Store_Data*>(data);
-    priv->render.on_idler_disabled = EINA_FALSE;
-    priv->render.restore_idler_timer = NULL;
+    DBG("ewkBackingStore%p, zoom=%f", ewkBackingStore, *zoom);
 
-    return EINA_FALSE;
-}
-
-void _ewk_tiled_backing_store_restore_idler_timer_reset(Ewk_Tiled_Backing_Store_Data *priv)
-{
-    if (priv->render.restore_idler_timer)
-        ecore_timer_del(priv->render.restore_idler_timer);
-
-    priv->render.restore_idler_timer = ecore_timer_add(
-        THRESHOLD_ANIM_TIME, _ewk_tiled_backing_store_restore_idler_cb, priv);
-}
-
-void _ewk_tiled_backing_store_restore_idler_timer_stop(Ewk_Tiled_Backing_Store_Data *priv)
-{
-    if (!priv->render.restore_idler_timer)
-        return;
-
-    priv->render.on_idler_disabled = EINA_FALSE;
-    ecore_timer_del(priv->render.restore_idler_timer);
-    priv->render.restore_idler_timer = NULL;
-}
-#endif
-
-Eina_Bool ewk_tiled_backing_store_zoom_set(Evas_Object* ewkTile, float* zoom, Evas_Coord currentX, Evas_Coord currentY, Evas_Coord* offsetX, Evas_Coord* offsetY)
-{
-    DBG("o=%p, zoom=%f", ewkTile, *zoom);
-
-    PRIV_DATA_GET_OR_RETURN(ewkTile, priv, EINA_FALSE);
+    PRIV_DATA_GET_OR_RETURN(ewkBackingStore, priv, false);
 
 #if ENABLE(TIZEN_NO_TILE_CREATION_OVER_THE_LIMIT)
     Eina_Bool ret = EINA_FALSE;
     Eina_Bool pre_suspend_value  = priv->render.suspend;
 
 #if ENABLE(TIZEN_SELECTIVE_RENDERING)
-    Eina_Bool pre_selective_render_value = priv->render.selective_render.enabled;
-    priv->render.selective_render.enabled = EINA_FALSE;
+    Eina_Bool pre_selective_render_value = priv->render.selectiveRender.enabled;
+    priv->render.selectiveRender.enabled = EINA_FALSE;
 #endif
 
     priv->render.suspend = EINA_TRUE;
@@ -2358,7 +2101,7 @@ Eina_Bool ewk_tiled_backing_store_zoom_set(Evas_Object* ewkTile, float* zoom, Ev
 
     priv->render.suspend = pre_suspend_value;
 #if ENABLE(TIZEN_SELECTIVE_RENDERING)
-    priv->render.selective_render.enabled = pre_selective_render_value;
+    priv->render.selectiveRender.enabled = pre_selective_render_value;
 #endif
     return ret;
 #else
@@ -2366,7 +2109,7 @@ Eina_Bool ewk_tiled_backing_store_zoom_set(Evas_Object* ewkTile, float* zoom, Ev
 #endif
 }
 
-#if ENABLE(TIZEN_ZOOM_BOUNCE)
+#if ENABLE(TIZEN_BG_RECT_SUPPORT)
 
 static Evas_Coord _ewk_tiled_backing_store_bounce_start_get(Evas_Coord val1, Evas_Coord val2)
 {
@@ -2378,11 +2121,11 @@ static Evas_Coord _ewk_tiled_backing_store_bounce_end_get(Evas_Coord val1, Evas_
     return val1 < val2 ? val1 : val2;
 }
 
-static void _ewk_tiled_backing_store_bounce_rect(Evas_Object * o, Evas_Object * bg_rect, Evas_Coord content_x, Evas_Coord content_y, Evas_Coord content_w, Evas_Coord content_h)
+static void _ewk_tiled_backing_store_bounce_rect(Evas_Object * ewkBackingStore, Evas_Object * bg_rect, Evas_Coord content_x, Evas_Coord content_y, Evas_Coord content_w, Evas_Coord content_h)
 {
     Evas_Coord view_x, view_y, view_w, view_h;
 
-    evas_object_geometry_get(o, &view_x, &view_y, &view_w, &view_h);
+    evas_object_geometry_get(ewkBackingStore, &view_x, &view_y, &view_w, &view_h);
 
     float view_w_h_ratio = (float)view_h / (float)view_w;
     float content_w_h_ratio = (float)content_h / (float)content_w;
@@ -2404,93 +2147,84 @@ static void _ewk_tiled_backing_store_bounce_rect(Evas_Object * o, Evas_Object *
 
 #endif
 
-void ewk_tiled_backing_store_fix_offsets(Evas_Object* ewkTile, Evas_Coord width, Evas_Coord height)
+void ewk_tiled_backing_store_fix_offsets(Evas_Object* ewkBackingStore, Evas_Coord width, Evas_Coord height)
 {
-    PRIV_DATA_GET_OR_RETURN(ewkTile, priv);
-    Eina_Inlist** itr, **itr_end;
-    Ewk_Tiled_Backing_Store_Item* it;
-    Evas_Coord new_x = priv->view.offset.cur.x;
-    Evas_Coord new_y = priv->view.offset.cur.y;
-    Evas_Coord bx = priv->view.offset.base.x;
-    Evas_Coord by = priv->view.offset.base.y;
-    Evas_Coord tw = priv->view.tile.width;
-    Evas_Coord th = priv->view.tile.height;
+    PRIV_DATA_GET_OR_RETURN(ewkBackingStore, priv);
+    Eina_Inlist** iterator, **iteratorEnd;
+    Ewk_Tiled_Backing_Store_Item* item;
+    Evas_Coord newX = priv->view.offset.current.x;
+    Evas_Coord newY = priv->view.offset.current.y;
+    Evas_Coord baseX = priv->view.offset.base.x;
+    Evas_Coord baseY = priv->view.offset.base.y;
+    Evas_Coord tileWidth = priv->view.tile.width;
+    Evas_Coord tileHeight = priv->view.tile.height;
 
-    if (-new_x > width) {
-        new_x = -width;
-        bx = new_x % tw;
-        priv->model.base.col = -new_x / tw;
+    if (-newX > width) {
+        newX = -width;
+        baseX = newX % tileWidth;
+        priv->model.base.column = -newX / tileWidth;
     }
 
-    if (-new_y > height) {
-        new_y = -height;
-        by = new_y % th;
-        priv->model.base.row = -new_y / th;
+    if (-newY > height) {
+        newY = -height;
+        baseY = newY % tileHeight;
+        priv->model.base.row = -newY / tileHeight;
     }
 
-    if (bx >= 0 || bx <= -2 * priv->view.tile.width) {
-        bx = new_x % tw;
-        priv->model.base.col = -new_x / tw;
+    if (baseX >= 0 || baseX <= -2 * priv->view.tile.width) {
+        baseX = newX % tileWidth;
+        priv->model.base.column = -newX / tileWidth;
     }
 
-    if (by >= 0 || by <= -2 * priv->view.tile.height) {
-        by = new_y % th;
-        priv->model.base.row = -new_y / th;
+    if (baseY >= 0 || baseY <= -2 * priv->view.tile.height) {
+        baseY = newY % tileHeight;
+        priv->model.base.row = -newY / tileHeight;
     }
 
-    priv->view.offset.cur.x = new_x;
-    priv->view.offset.cur.y = new_y;
-    priv->view.offset.old.x = new_x;
-    priv->view.offset.old.y = new_y;
-    priv->view.offset.base.x = bx;
-    priv->view.offset.base.y = by;
-    evas_object_move(priv->contents_clipper,
-                     new_x + priv->view.x,
-                     new_y + priv->view.y);
+    priv->view.offset.current.x = newX;
+    priv->view.offset.current.y = newY;
+    priv->view.offset.old.x = newX;
+    priv->view.offset.old.y = newY;
+    priv->view.offset.base.x = baseX;
+    priv->view.offset.base.y = baseY;
+    evas_object_move(priv->contentsClipper,
+                     newX + priv->view.x,
+                     newY + priv->view.y);
 
-    Evas_Coord oy = priv->view.offset.base.y + priv->view.y;
-    Evas_Coord base_ox = priv->view.x + priv->view.offset.base.x;
+    Evas_Coord tilePositionY = priv->view.offset.base.y + priv->view.y;
+    Evas_Coord baseTilePositionX = priv->view.x + priv->view.offset.base.x;
 
-    itr = priv->view.items;
-    itr_end = itr + priv->view.rows;
+    iterator = priv->view.items;
+    iteratorEnd = iterator + priv->view.rows;
 
-    for (; itr < itr_end; itr++) {
-        Evas_Coord ox = base_ox;
-        Eina_Inlist* lst = *itr;
+    for (; iterator < iteratorEnd; iterator++) {
+        Evas_Coord tilePositionX = baseTilePositionX;
+        Eina_Inlist* lst = *iterator;
 
-        EINA_INLIST_FOREACH(lst, it) {
-            _ewk_tiled_backing_store_item_move(it, ox, oy);
-            _ewk_tiled_backing_store_item_resize(it, tw, th);
-            ox += tw;
+        EINA_INLIST_FOREACH(lst, item) {
+            _ewk_tiled_backing_store_item_move(item, tilePositionX, tilePositionY);
+            _ewk_tiled_backing_store_item_resize(item, tileWidth, tileHeight);
+            tilePositionX += tileWidth;
         }
-        oy += th;
+        tilePositionY += tileHeight;
     }
 }
 
 #if ENABLE(TIZEN_TILED_VIEW_BG_COLOR_SET)
-void ewk_tiled_backing_store_bg_color_set(Evas_Object *o, Eina_Bool has_alpha)
+void ewk_tiled_backing_store_bg_color_set(Evas_Object *ewkBackingStore, Eina_Bool hasAlpha)
 {
-    PRIV_DATA_GET_OR_RETURN(o, priv);
-    priv->view.tile.has_alpha = has_alpha;
+    PRIV_DATA_GET_OR_RETURN(ewkBackingStore, priv);
+    priv->view.tile.hasAlpha = hasAlpha;
 }
 #endif
 
-Eina_Bool ewk_tiled_backing_store_update(Evas_Object* ewkTile, const Eina_Rectangle* update)
+Eina_Bool ewk_tiled_backing_store_update(Evas_Object* ewkBackingStore, const Eina_Rectangle* update)
 {
-    PRIV_DATA_GET_OR_RETURN(ewkTile, priv, EINA_FALSE);
+    PRIV_DATA_GET_OR_RETURN(ewkBackingStore, priv, false);
 
     if (priv->render.disabled)
-        return EINA_FALSE;
+        return false;
 
-#if ENABLE(TIZEN_REPAINT_IDLER)
-    // If we still have some unprocessed requests, change to immediate mode, since it's probably an animation.
-    if (priv->render.process_requests) {
-        priv->render.on_idler_disabled = EINA_TRUE;
-        _ewk_tiled_backing_store_process_requests_flush(priv);
-        _ewk_tiled_backing_store_update_add_process(priv);
-        _ewk_tiled_backing_store_restore_idler_timer_reset(priv);
-    }
-#endif
 #if ENABLE(TIZEN_CAIRO_SCALE_PATCH)
     return ewk_tile_matrix_update(priv->model.matrix, update,
                                   priv->view.tile.zoom,
@@ -2501,40 +2235,40 @@ Eina_Bool ewk_tiled_backing_store_update(Evas_Object* ewkTile, const Eina_Rectan
 #endif
 }
 
-void ewk_tiled_backing_store_updates_process_pre_set(Evas_Object* ewkTile, void* (*callback)(void* data, Evas_Object *ewkTile), const void* data)
+void ewk_tiled_backing_store_updates_process_pre_set(Evas_Object* ewkBackingStore, void* (*callback)(void* data, Evas_Object *ewkBackingStore), const void* data)
 {
-    PRIV_DATA_GET_OR_RETURN(ewkTile, priv);
-    priv->process.pre_cb = callback;
-    priv->process.pre_data = (void*)data;
+    PRIV_DATA_GET_OR_RETURN(ewkBackingStore, priv);
+    priv->process.preCallback = callback;
+    priv->process.preData = (void*)data;
 }
 
-void ewk_tiled_backing_store_updates_process_post_set(Evas_Object* ewkTile, void* (*callback)(void* data, void* pre_data, Evas_Object *ewkTile), const void* data)
+void ewk_tiled_backing_store_updates_process_post_set(Evas_Object* ewkBackingStore, void* (*callback)(void* data, void* preData, Evas_Object *ewkBackingStore), const void* data)
 {
-    PRIV_DATA_GET_OR_RETURN(ewkTile, priv);
-    priv->process.post_cb = callback;
-    priv->process.post_data = (void*)data;
+    PRIV_DATA_GET_OR_RETURN(ewkBackingStore, priv);
+    priv->process.postCallback = callback;
+    priv->process.postData = (void*)data;
 }
 
-void ewk_tiled_backing_store_updates_process(Evas_Object* ewkTile)
+void ewk_tiled_backing_store_updates_process(Evas_Object* ewkBackingStore)
 {
-    PRIV_DATA_GET_OR_RETURN(ewkTile, priv);
+    PRIV_DATA_GET_OR_RETURN(ewkBackingStore, priv);
     _ewk_tiled_backing_store_updates_process(priv);
 }
 
-void ewk_tiled_backing_store_updates_clear(Evas_Object* ewkTile)
+void ewk_tiled_backing_store_updates_clear(Evas_Object* ewkBackingStore)
 {
-    PRIV_DATA_GET_OR_RETURN(ewkTile, priv);
+    PRIV_DATA_GET_OR_RETURN(ewkBackingStore, priv);
 
     ewk_tile_matrix_updates_clear(priv->model.matrix);
 }
 
-void ewk_tiled_backing_store_contents_resize(Evas_Object* ewkTile, Evas_Coord width, Evas_Coord height)
+void ewk_tiled_backing_store_contents_resize(Evas_Object* ewkBackingStore, Evas_Coord width, Evas_Coord height)
 {
-    PRIV_DATA_GET_OR_RETURN(ewkTile, priv);
+    PRIV_DATA_GET_OR_RETURN(ewkBackingStore, priv);
 
 #if ENABLE(TIZEN_FIX_EMAIL_ONE_TILE_DISPLAY)
     if (width == priv->model.width && height == priv->model.height) {
-        priv->changed.need_layout = EINA_TRUE;
+        priv->changed.needLayout = EINA_TRUE;
         return;
     }
 #else
@@ -2544,58 +2278,58 @@ void ewk_tiled_backing_store_contents_resize(Evas_Object* ewkTile, Evas_Coord wi
 
     priv->model.width = width;
     priv->model.height = height;
-#if !ENABLE(TIZEN_LOCAL_DIFF)
-    priv->changed.model = EINA_TRUE;
+#if !ENABLE(TIZEN_TILE_BASECODE)
+    priv->changed.model = true;
 #endif
 #if ENABLE(TIZEN_TILE_MATRIX_LIST)
-    priv->changed.layout = EINA_TRUE;
+    priv->changed.layout = true;
 #endif
     DBG("w,h=%d, %d", width, height);
 
 #if ENABLE(TIZEN_CTBS_UPDATE_AFTER_CONTENTS_RESIZE)
     // without below code http://limpid.nl/lab/css/fixed/ is not rendered properly
     // We call whole backing store update when contents resize
-    Eina_Rectangle r = {0, 0, width, height};
-    ewk_tiled_backing_store_update(ewkTile, &r);
+    Eina_Rectangle request = {0, 0, width, height};
+    ewk_tiled_backing_store_update(ewkBackingStore, &request);
 #endif
 
     _ewk_tiled_backing_store_changed(priv);
 }
 
-void ewk_tiled_backing_store_disabled_update_set(Evas_Object* ewkTile, Eina_Bool value)
+void ewk_tiled_backing_store_disabled_update_set(Evas_Object* ewkBackingStore, Eina_Bool value)
 {
-    PRIV_DATA_GET_OR_RETURN(ewkTile, priv);
+    PRIV_DATA_GET_OR_RETURN(ewkBackingStore, priv);
 
     if (value != priv->render.disabled)
         priv->render.disabled = value;
 }
 
 #if ENABLE(TIZEN_FIX_RSS_IMAGE_DISPLAY)
-Eina_Bool ewk_tiled_backing_store_disabled_update_get(Evas_Object *o)
+Eina_Bool ewk_tiled_backing_store_disabled_update_get(Evas_Object *ewkBackingStore)
 {
-    PRIV_DATA_GET_OR_RETURN(o, priv, EINA_FALSE);
+    PRIV_DATA_GET_OR_RETURN(ewkBackingStore, priv, EINA_FALSE);
     return priv->render.disabled;
 }
 #endif
 
-void ewk_tiled_backing_store_flush(Evas_Object* ewkTile)
+void ewk_tiled_backing_store_flush(Evas_Object* ewkBackingStore)
 {
-    PRIV_DATA_GET_OR_RETURN(ewkTile, priv);
-    Ewk_Tile_Unused_Cache* tuc = 0;
+    PRIV_DATA_GET_OR_RETURN(ewkBackingStore, priv);
+    Ewk_Tile_Unused_Cache* tileUnusedCache = 0;
 
-    priv->view.offset.cur.x = 0;
-    priv->view.offset.cur.y = 0;
+    priv->view.offset.current.x = 0;
+    priv->view.offset.current.y = 0;
     priv->view.offset.old.x = 0;
     priv->view.offset.old.y = 0;
     priv->view.offset.base.x = 0;
     priv->view.offset.base.y = 0;
-    priv->model.base.col = 0;
+    priv->model.base.column = 0;
     priv->model.base.row = 0;
-    priv->model.cur.cols = 1;
-    priv->model.cur.rows = 1;
-    priv->model.old.cols = 0;
+    priv->model.current.columns = 1;
+    priv->model.current.rows = 1;
+    priv->model.old.columns = 0;
     priv->model.old.rows = 0;
-    priv->changed.size = EINA_TRUE;
+    priv->changed.size = true;
 
 #ifdef DEBUG_MEM_LEAKS
     printf("\nFLUSHED BACKING STORE, STATUS BEFORE DELETING TILE MATRIX:\n");
@@ -2604,48 +2338,42 @@ void ewk_tiled_backing_store_flush(Evas_Object* ewkTile)
 
 #if ENABLE(TIZEN_FIX_EMAIL_ONE_TILE_DISPLAY)
 #if ENABLE(TIZEN_TILE_MATRIX_LIST)
-    if (priv->changed.need_layout) {
+    if (priv->changed.needLayout) {
         priv->changed.layout = EINA_TRUE;
-        priv->changed.need_layout = EINA_FALSE;
+        priv->changed.needLayout = EINA_FALSE;
     }
 #endif
 #endif
-#if ENABLE(TIZEN_REPAINT_IDLER)
-    _ewk_tiled_backing_store_restore_idler_timer_stop(priv);
-    _ewk_tiled_backing_store_process_requests_flush(priv);
-    _ewk_tiled_backing_store_update_add_flush(priv);
-#endif
-
     _ewk_tiled_backing_store_pre_render_request_flush(priv);
     _ewk_tiled_backing_store_tile_dissociate_all(priv);
-    tuc = ewk_tile_matrix_unused_cache_get(priv->model.matrix);
-#if ENABLE(TIZEN_LOCAL_DIFF)
-    ewk_tile_unused_cache_ref(tuc);
+    tileUnusedCache = ewk_tile_matrix_unused_cache_get(priv->model.matrix);
+#if ENABLE(TIZEN_TILE_BASECODE)
+    ewk_tile_unused_cache_ref(tileUnusedCache);
     ewk_tile_matrix_free(priv->model.matrix);
 #else
-    ewk_tile_unused_cache_clear(tuc);    
+    ewk_tile_unused_cache_clear(tileUnusedCache);    
 #endif
 
 #if ENABLE(TIZEN_TILE_REUSE_ALREADY_CREATED)
 #if !ENABLE(TIZEN_REUSE_BIGGER_ZOOM_FIRST)
     priv->model.matrix = ewk_tile_matrix_new
-        (tuc, priv->model.cur.cols, priv->model.cur.rows, priv->view.tile.zoom,
-         priv->cspace, priv->view.cols, priv->view.rows,
+        (tileUnusedCache, priv->model.current.columns, priv->model.current.rows, priv->view.tile.zoom,
+         priv->colorSpace, priv->view.columns, priv->view.rows,
          _ewk_tiled_backing_store_render, priv, _tile_distance2, priv, evas_object_evas_get(priv->self));
 #else
     priv->model.matrix = ewk_tile_matrix_new
-        (tuc, priv->model.cur.cols, priv->model.cur.rows, priv->view.tile.zoom,
-         priv->cspace, priv->view.cols, priv->view.rows,
+        (tileUnusedCache, priv->model.current.columns, priv->model.current.rows, priv->view.tile.zoom,
+         priv->colorSpace, priv->view.columns, priv->view.rows,
          _ewk_tiled_backing_store_render, priv, _bigger_zoom_first, priv, evas_object_evas_get(priv->self));
 #endif
 #else
     priv->model.matrix = ewk_tile_matrix_new
-        (tuc, priv->model.cur.cols, priv->model.cur.rows,
+        (tuc, priv->model.current.cols, priv->model.current.rows,
          priv->view.tile.zoom, priv->cspace, _ewk_tiled_backing_store_render,
          priv);
 #endif
-#if ENABLE(TIZEN_LOCAL_DIFF)
-    ewk_tile_unused_cache_unref(tuc);
+#if ENABLE(TIZEN_TILE_BASECODE)
+    ewk_tile_unused_cache_unref(tileUnusedCache);
 #endif
 #ifdef DEBUG_MEM_LEAKS
     printf("\nFLUSHED BACKING STORE, STATUS AFTER RECREATING TILE MATRIX:\n");
@@ -2653,93 +2381,69 @@ void ewk_tiled_backing_store_flush(Evas_Object* ewkTile)
 #endif
 }
 
-#if ENABLE(TIZEN_PRE_RENDERING_NEWIMP)
-
-Eina_Bool ewk_tiled_backing_store_pre_render_tile_add(Evas_Object *o, int col, int row, float zoom)
+Eina_Bool ewk_tiled_backing_store_pre_render_tile_add(Evas_Object* ewkBackingStore, int column, int row, float zoom)
 {
-    PRIV_DATA_GET_OR_RETURN(o, priv, EINA_FALSE);
+    PRIV_DATA_GET_OR_RETURN(ewkBackingStore, priv, false);
 
 #if !ENABLE(TIZEN_PRE_RENDER_TILES_CREATED_AFTER_SCROLL)
-    if (ewk_tile_matrix_tile_exact_exists(priv->model.matrix, col, row, zoom))
-        return EINA_FALSE;
+    if (ewk_tile_matrix_tile_exact_exists(priv->model.matrix, column, row, zoom))
+        return false;
 #else
-    if (!ewk_tile_matrix_tile_is_pre_renderable(priv->model.matrix, col, row, zoom))
-        return EINA_FALSE;
+    if (!ewk_tile_matrix_tile_is_pre_renderable(priv->model.matrix, column, row, zoom))
+        return false;
 #endif
 
-    if (!_ewk_tiled_backing_store_pre_render_request_add(priv, col, row, zoom))
-        return EINA_FALSE;
+    if (!_ewk_tiled_backing_store_pre_render_request_add(priv, column, row, zoom))
+        return false;
 
-    return EINA_TRUE;
+    return true;
 }
 
-Eina_Bool ewk_tiled_backing_store_pre_render_tiles_enqueue(Evas_Object *o, int max_memory, Eina_Rectangle* view_rect, Eina_Rectangle* cache_rect, float zoom, float old_zoom)
+Eina_Bool ewk_tiled_backing_store_pre_render_spiral_queue(Evas_Object* ewkBackingStore, Eina_Rectangle* viewRect, Eina_Rectangle* renderRect, int maxMemory, float zoom)
 {
-    PRIV_DATA_GET_OR_RETURN(o, priv, EINA_FALSE);
+    PRIV_DATA_GET_OR_RETURN(ewkBackingStore, priv, false);
+    EINA_SAFETY_ON_NULL_RETURN_VAL(viewRect, false);
+    EINA_SAFETY_ON_NULL_RETURN_VAL(renderRect, false);
 
-    if ( !view_rect
-        || !cache_rect )
-        return EINA_FALSE;
-
-    const int tile_w = priv->view.tile.width;
-    const int tile_h = priv->view.tile.height;
-
-    int view_x = view_rect->x;
-    int view_y = view_rect->y;
-    int view_w = view_rect->w;
-    int view_h = view_rect->h;
+    const int tileWidth = priv->view.tile.width;
+    const int tileHeight = priv->view.tile.height;
 
-    int cache_x = cache_rect->x;
-    int cache_y = cache_rect->y;
-    int cache_w = cache_rect->w;
-    int cache_h = cache_rect->h;
+    Eina_Tile_Grid_Slicer viewSlicer;
+    Eina_Tile_Grid_Slicer renderSlicer;
 
-    DBG("view_x %d,y %d,w %d,h %d\r\n", view_x, view_y, view_w, view_h);
-    DBG("cache_x %d cache_y %d cach_w %d cache_h %d\r\n", cache_x, cache_y, cache_w, cache_h);
-
-    Eina_Tile_Grid_Slicer view_slicer;
-    Eina_Tile_Grid_Slicer cur_cache_slicer;
-
-    if (!eina_tile_grid_slicer_setup(&view_slicer, view_x, view_y, view_w, view_h, tile_w, tile_h)) {
-        ERR("could not setup grid view_slicer for %d,%d+%dx%d tile=%dx%d", view_x, view_y, view_w, view_h, tile_w, tile_h);
-        return EINA_FALSE;
+    if (!eina_tile_grid_slicer_setup(&viewSlicer,
+        viewRect->x, viewRect->y, viewRect->w, viewRect->h, tileWidth, tileHeight)) {
+        ERR("could not setup grid viewSlicer for %d,%d+%dx%d tile=%dx%d", viewRect->x, viewRect->y, viewRect->w, viewRect->h, tileWidth, tileHeight);
+        return false;
     }
 
-    if (!eina_tile_grid_slicer_setup(&cur_cache_slicer, cache_x, cache_y, cache_w, cache_h, tile_w, tile_h)) {
-       ERR("could not setup grid cur_tuc_slicer for %d,%d+%dx%d tile=%dx%d", cache_x, cache_y, cache_w, cache_h, tile_w, tile_h);
-       return EINA_FALSE;
+    if (!eina_tile_grid_slicer_setup(&renderSlicer,
+        renderRect->x, renderRect->y, renderRect->w, renderRect->h, tileWidth, tileHeight)) {
+        ERR("could not setup grid RenderSlicer for %d,%d+%dx%d tile=%dx%d", renderRect->y, renderRect->y, renderRect->w, renderRect->h, tileWidth, tileHeight);
+        return false;
     }
 
-    // spiral starts from the center of the view area
-    int center_col = (int)(( view_slicer.col1 + view_slicer.col2 ) / 2);
-    int center_row = (int)(( view_slicer.row1 + view_slicer.row2 ) / 2);
-
-    // set limits to loop to max cache and view size
-    const int ARGB_BYTES = 4;
-    int hand_break = max_memory / ARGB_BYTES / tile_w / tile_h;
-    const int max_view_size = MAX(view_slicer.col2 - view_slicer.col1 , view_slicer.row2 - view_slicer.row1);
-    const int max_cache_size = MAX(cur_cache_slicer.col2 - cur_cache_slicer.col1 , cur_cache_slicer.row2 - cur_cache_slicer.row1);
-    const int max_loop_count = max_view_size + max_cache_size; // check this value later
-
-    // LOG info
-    DBG("max size : hand break %d\r\n", hand_break);
-    DBG("max_cache_size %d\r\n", max_cache_size);
-    DBG("max_loop_count %d\r\n", max_loop_count);
-    DBG("center col/row(%d/%d)\r\n", center_col, center_row);
-    DBG("view col/row(%d/%d)(%d/%d)\r\n", (int)view_slicer.col1, (int)view_slicer.row1, (int)view_slicer.col2, (int)view_slicer.row2);
-    DBG("cur col/row(%d/%d)(%d/%d)\r\n", (int)cur_cache_slicer.col1, (int)cur_cache_slicer.row1, (int)cur_cache_slicer.col2, (int)cur_cache_slicer.row2);
+    // set limits of the loop.
+    int memoryLimits = maxMemory / (EWK_ARGB_BYTES_SIZE * tileWidth * tileHeight);
+    const int maxViewSideLength = std::max(viewSlicer.col2 - viewSlicer.col1, viewSlicer.row2 - viewSlicer.row1);
+    const int maxRenderSideLength = std::max(renderSlicer.col2 - renderSlicer.col1, renderSlicer.row2 - renderSlicer.row1);
+    const int maxLoopCount = maxViewSideLength + maxRenderSideLength;
 
-    int step = 1;
-    int loop, i;
-    const int each_rect_side = 4;
-    for (loop = 0; loop < max_loop_count; loop++) {
-        for (i = 1; i < step * each_rect_side + 1; i++) {
+    // spire starts from the center of the view area.
+    int centerColumn = (viewSlicer.col1 + viewSlicer.col2) / 2;
+    int centerRow = (viewSlicer.row1 + viewSlicer.row2) / 2;
 
+    int step = 1;
+    const int squareSide = 4;
+    for (int loop = 0; loop < maxLoopCount; loop++) {
+        for (int i = 1; i < step * squareSide + 1; i++) {
+            if (memoryLimits <= 0)
+                goto memoryLimitsReached;
             /*
-            this code means the loop runs like spiral ( left->down->right->up )
-            when it moves back to original place and then move 1 tile left and upward.
-            the loop keeps on doing this until it reaches max memory to draw tiles
-            e.g )
+            this code means the loop runs like spiral. (i.g. left->down->right->up)
+            when it moves back to original place and then walk 1 tile left and up.
+            the loop keeps on doing this until it reaches max memory to draw tiles.
+            e.g. )
                          333333
                          322223
                          321123
@@ -2748,119 +2452,80 @@ Eina_Bool ewk_tiled_backing_store_pre_render_tiles_enqueue(Evas_Object *o, int m
                          333333
             */
             if (i > 0 && i <= step)
-                center_col++; // move left
+                centerColumn++; // move left.
             else if (i > step && i <= step * 2)
-                center_row++; // move down
+                centerRow++; // move down.
             else if (i > step * 2 && i <= step * 3)
-                center_col--; // move right
+                centerColumn--; // move right.
             else if (i > step * 3 && i <= step * 4)
-                center_row--; // move up
+                centerRow--; // move up.
             else
-                ERR("ERR:over step limit\r\n");
-
-            if (hand_break < 0)
-                goto end_of_loop;
+                ERR("ERROR : out of bounds\r\n");
 
-            // skip in view port area
-            if ((int)view_slicer.col1 < center_col
-                && (int)view_slicer.col2 > center_col
-                && (int)view_slicer.row1 < center_row
-                && (int)view_slicer.row2 > center_row)
+            // skip in view port area.
+            if (static_cast<int>(viewSlicer.col1) < centerColumn
+                && static_cast<int>(viewSlicer.col2) > centerColumn
+                && static_cast<int>(viewSlicer.row1) < centerRow
+                && static_cast<int>(viewSlicer.row2) > centerRow)
                 continue;
 
-           if ((int)cur_cache_slicer.col1 <= center_col
-                && (int)cur_cache_slicer.col2 >= center_col
-                && (int)cur_cache_slicer.row1 <= center_row
-                && (int)cur_cache_slicer.row2 >= center_row) {
+            if (static_cast<int>(renderSlicer.col1) <= centerColumn
+                && static_cast<int>(renderSlicer.col2) >= centerColumn
+                && static_cast<int>(renderSlicer.row1) <= centerRow
+                && static_cast<int>(renderSlicer.row2) >= centerRow) {
 
-                if (!ewk_tiled_backing_store_pre_render_tile_add( o, center_col, center_row, zoom ))
+                if (!ewk_tiled_backing_store_pre_render_tile_add(ewkBackingStore, centerColumn, centerRow, zoom))
                     continue;
-
-                hand_break--;
+                DBG("R>[%d %d] ", centerColumn, centerRow);
+                memoryLimits--;
             }
         }
-        center_row--;
-        center_col--;
-        // each side step is increased by ( 2n - 1 )
+        centerRow--;
+        centerColumn--;
         step = step + 2;
     }
 
-end_of_loop:
-
-#if ENABLE(TIZEN_PRE_RENDERING_ADVANCE)
-    // if zoom has been changed, add heavy tiles to pre-render queue
-    if (zoom != old_zoom) {
-        Eina_Tile_Grid_Slicer slicer;
-        int contents_width = priv->model.width * zoom;
-        int contents_height = priv->model.height * zoom;
-        if (!eina_tile_grid_slicer_setup(&slicer, 0, 0, contents_width, contents_height, priv->view.tile.w, priv->view.tile.h))
-            return EINA_FALSE;
-
-        unsigned long max_col = slicer.col2;
-        unsigned long max_row = slicer.row2;
-
-        Ewk_Heavy_Tile *heavy_tile = NULL;
-        EINA_INLIST_FOREACH(priv->render.heavy_tile_list, heavy_tile) {
-            int heavy_tile_col = heavy_tile->col;
-            int heavy_tile_row = heavy_tile->row;
-            if (zoom > 1.0) {
-                int zoom_step = (int)zoom;
-                int center_row = heavy_tile_row;
-                for (center_row = heavy_tile_row - zoom_step; center_row < heavy_tile_row + zoom_step; center_row++) {
-                    int center_col = heavy_tile_col;
-                    for (center_col = heavy_tile_col - zoom_step; center_col < heavy_tile_col + zoom_step; center_col++) {
-                        if (center_col > 0 && center_row > 0 && center_col < max_col && center_row < max_row)
-                            ewk_tiled_backing_store_pre_render_tile_add(o, center_col, center_row, zoom);
-                    }
-                }
-            } else {
-                if (center_col > 0 && center_row > 0 && center_col < max_col && center_row < max_row)
-                    ewk_tiled_backing_store_pre_render_tile_add(o, heavy_tile_col, heavy_tile_row, zoom);
-            }
-        }
-    }
-#endif
+memoryLimitsReached:
     _ewk_tiled_backing_store_item_process_idler_start(priv);
 
-    return EINA_TRUE;
+    return true;
 }
-#endif
 
-Eina_Bool ewk_tiled_backing_store_pre_render_region(Evas_Object* ewkTile, Evas_Coord x, Evas_Coord y, Evas_Coord width, Evas_Coord height, float zoom)
+Eina_Bool ewk_tiled_backing_store_pre_render_region(Evas_Object* ewkBackingStore, Evas_Coord x, Evas_Coord y, Evas_Coord width, Evas_Coord height, float zoom)
 {
-    PRIV_DATA_GET_OR_RETURN(ewkTile, priv, EINA_FALSE);
+    PRIV_DATA_GET_OR_RETURN(ewkBackingStore, priv, false);
     Eina_Tile_Grid_Slicer slicer;
     const Eina_Tile_Grid_Info* info;
-    Evas_Coord tw, th;
-    Ewk_Tile_Unused_Cache* tuc;
-    
-    tw = priv->view.tile.width;
-    th = priv->view.tile.height;
+    Evas_Coord tileWidth, tileHeight;
+    Ewk_Tile_Unused_Cache* tileUnusedCache;
+
+    tileWidth = priv->view.tile.width;
+    tileHeight = priv->view.tile.height;
     zoom = ROUNDED_ZOOM(priv->view.tile.width, zoom);
 #if ENABLE(TIZEN_CAIRO_SCALE_PATCH)
     if (priv->view.tile.enable_scale) {
-        tw /= zoom;
-        th /= zoom;
+        tileWidth /= zoom;
+        tileHeight /= zoom;
     }
 #endif
 
-    if (!eina_tile_grid_slicer_setup(&slicer, x, y, width, height, tw, th)) {
+    if (!eina_tile_grid_slicer_setup(&slicer, x, y, width, height, tileWidth, tileHeight)) {
         ERR("could not setup grid slicer for %d,%d+%dx%d tile=%dx%d",
-            x, y, width, height, tw, th);
-        return EINA_FALSE;
+            x, y, width, height, tileWidth, tileHeight);
+        return false;
     }
 #if ENABLE(TIZEN_PRE_RENDERING_FIX)
     const unsigned long rows = priv->model.height * zoom / priv->view.tile.height + 1;
-    const unsigned long cols = priv->model.width * zoom / priv->view.tile.width + 1;
+    const unsigned long columns = priv->model.width * zoom / priv->view.tile.width + 1;
 #endif
 
     while (eina_tile_grid_slicer_next(&slicer, &info)) {
         const unsigned long c = info->col;
         const unsigned long r = info->row;
 #if ENABLE(TIZEN_PRE_RENDERING_FIX)
-        if (c >= cols || r >= rows)
+        if (c >= columns || r >= rows)
             continue;
-        // check if a tile already exists on the matrix, if it does, we do not add a new request to create this particular tile
+        // check if a tile already exists on the matrix, if item does, we do not add a new request to create this particular tile
 #if !ENABLE(TIZEN_PRE_RENDER_TILES_CREATED_AFTER_SCROLL)
         if (ewk_tile_matrix_tile_exact_exists(priv->model.matrix, c, r, zoom))
             continue;
@@ -2868,9 +2533,8 @@ Eina_Bool ewk_tiled_backing_store_pre_render_region(Evas_Object* ewkTile, Evas_C
         if (!ewk_tile_matrix_tile_is_pre_renderable(priv->model.matrix, c, r, zoom))
             continue;
 #endif
-
 #else
-        if (c >= priv->model.cur.cols || r >= priv->model.cur.rows)
+        if (c >= priv->model.current.columns || request >= priv->model.current.rows)
             continue;
 #endif
         if (!_ewk_tiled_backing_store_pre_render_request_add(priv, c, r, zoom))
@@ -2879,37 +2543,37 @@ Eina_Bool ewk_tiled_backing_store_pre_render_region(Evas_Object* ewkTile, Evas_C
 
     _ewk_tiled_backing_store_item_process_idler_start(priv);
 
-    tuc = ewk_tile_matrix_unused_cache_get(priv->model.matrix);
-#if !ENABLE(TIZEN_LOCAL_DIFF)
-    ewk_tile_unused_cache_lock_area(tuc, x, y, width, height, zoom);
+    tileUnusedCache = ewk_tile_matrix_unused_cache_get(priv->model.matrix);
+#if !ENABLE(TIZEN_TILE_BASECODE)
+    ewk_tile_unused_cache_lock_area(tileUnusedCache, x, y, width, height, zoom);
 #endif
-    return EINA_TRUE;
+    return true;
 }
 
-Eina_Bool ewk_tiled_backing_store_pre_render_relative_radius(Evas_Object* ewkTile, unsigned int n, float zoom)
+Eina_Bool ewk_tiled_backing_store_pre_render_relative_radius(Evas_Object* ewkBackingStore, unsigned int n, float zoom)
 {
-    PRIV_DATA_GET_OR_RETURN(ewkTile, priv, EINA_FALSE);
-    unsigned long start_row, end_row, start_col, end_col, i, j, width, height;
-    Ewk_Tile_Unused_Cache* tuc;
+    PRIV_DATA_GET_OR_RETURN(ewkBackingStore, priv, false);
+    unsigned long startRow, endRow, startCol, endCol, i, j, width, height;
+    Ewk_Tile_Unused_Cache* tileUnusedCache;
 
     INF("priv->model.base.row =%ld, n=%u priv->view.rows=%lu",
         priv->model.base.row, n, priv->view.rows);
-    start_row = MAX(0, (long)(priv->model.base.row - n));
-    start_col = MAX(0, (long)(priv->model.base.col - n));
-    end_row = std::min(priv->model.cur.rows - 1,
+    startRow = (long)priv->model.base.row - n;
+    startCol = (long)priv->model.base.column - n;
+    endRow = std::min(priv->model.current.rows - 1,
                        priv->model.base.row + priv->view.rows + n - 1);
-    end_col = std::min(priv->model.cur.cols - 1,
-                       priv->model.base.col + priv->view.cols + n - 1);
+    endCol = std::min(priv->model.current.columns - 1,
+                       priv->model.base.column + priv->view.columns + n - 1);
 
-    INF("start_row=%lu, end_row=%lu, start_col=%lu, end_col=%lu",
-        start_row, end_row, start_col, end_col);
+    INF("startRow=%lu, endRow=%lu, startCol=%lu, endCol=%lu",
+        startRow, endRow, startCol, endCol);
 
     zoom = ROUNDED_ZOOM(priv->view.tile.width, zoom);
 
-    for (i = start_row; i <= end_row; i++)
-        for (j = start_col; j <= end_col; j++) {
+    for (i = startRow; i <= endRow; i++)
+        for (j = startCol; j <= endCol; j++) {
 #if ENABLE(TIZEN_PRE_RENDER_INDEX_BOUNDARY_CHECK)
-            if (i >= priv->model.cur.rows || j >= priv->model.cur.cols)
+            if (i >= priv->model.current.rows || j >= priv->model.current.columns)
                 continue;
 #endif
             if (!_ewk_tiled_backing_store_pre_render_request_add(priv, j, i, zoom))
@@ -2919,99 +2583,99 @@ Eina_Bool ewk_tiled_backing_store_pre_render_relative_radius(Evas_Object* ewkTil
 start_processing:
     _ewk_tiled_backing_store_item_process_idler_start(priv);
 
-    tuc = ewk_tile_matrix_unused_cache_get(priv->model.matrix);
-    height = (end_row - start_row + 1) * TILE_SIZE_AT_ZOOM(priv->view.tile.height, zoom);
-    width = (end_col - start_col + 1) * TILE_SIZE_AT_ZOOM(priv->view.tile.width, zoom);
-#if !ENABLE(TIZEN_LOCAL_DIFF)
-    ewk_tile_unused_cache_lock_area(tuc,
-                                    start_col * TILE_SIZE_AT_ZOOM(priv->view.tile.width, zoom),
-                                    start_row * TILE_SIZE_AT_ZOOM(priv->view.tile.height, zoom), width, height, zoom);
+    tileUnusedCache = ewk_tile_matrix_unused_cache_get(priv->model.matrix);
+    height = (endRow - startRow + 1) * TILE_SIZE_AT_ZOOM(priv->view.tile.height, zoom);
+    width = (endCol - startCol + 1) * TILE_SIZE_AT_ZOOM(priv->view.tile.width, zoom);
+#if !ENABLE(TIZEN_TILE_BASECODE)
+    ewk_tile_unused_cache_lock_area(tileUnusedCache,
+                                    startCol * TILE_SIZE_AT_ZOOM(priv->view.tile.width, zoom),
+                                    startRow * TILE_SIZE_AT_ZOOM(priv->view.tile.height, zoom), width, height, zoom);
 #endif
 
-    return EINA_TRUE;
+    return true;
 }
 
-void ewk_tiled_backing_store_pre_render_cancel(Evas_Object* ewkTile)
+void ewk_tiled_backing_store_pre_render_cancel(Evas_Object* ewkBackingStore)
 {
-    PRIV_DATA_GET_OR_RETURN(ewkTile, priv);
-    Ewk_Tile_Unused_Cache* tuc;
+    PRIV_DATA_GET_OR_RETURN(ewkBackingStore, priv);
+    Ewk_Tile_Unused_Cache* tileUnusedCache;
 
     _ewk_tiled_backing_store_pre_render_request_clear(priv);
 
-    tuc = ewk_tile_matrix_unused_cache_get(priv->model.matrix);
-#if !ENABLE(TIZEN_LOCAL_DIFF)
-    ewk_tile_unused_cache_unlock_area(tuc);
+    tileUnusedCache = ewk_tile_matrix_unused_cache_get(priv->model.matrix);
+#if !ENABLE(TIZEN_TILE_BASECODE)
+    ewk_tile_unused_cache_unlock_area(tileUnusedCache);
 #endif
 }
 
-Eina_Bool ewk_tiled_backing_store_disable_render(Evas_Object* ewkTile)
+Eina_Bool ewk_tiled_backing_store_disable_render(Evas_Object* ewkBackingStore)
 {
-    PRIV_DATA_GET_OR_RETURN(ewkTile, priv, EINA_FALSE);
+    PRIV_DATA_GET_OR_RETURN(ewkBackingStore, priv, false);
     return _ewk_tiled_backing_store_disable_render(priv);
 }
 
-Eina_Bool ewk_tiled_backing_store_enable_render(Evas_Object* ewkTile)
+Eina_Bool ewk_tiled_backing_store_enable_render(Evas_Object* ewkBackingStore)
 {
-    PRIV_DATA_GET_OR_RETURN(ewkTile, priv, EINA_FALSE);
+    PRIV_DATA_GET_OR_RETURN(ewkBackingStore, priv, false);
     _ewk_tiled_backing_store_changed(priv);
     return _ewk_tiled_backing_store_enable_render(priv);
 }
 
 #if ENABLE(TIZEN_CAIRO_SCALE_PATCH)
-void ewk_tiled_backing_store_enable_scale_set(Evas_Object *o, Eina_Bool value)
+void ewk_tiled_backing_store_enable_scale_set(Evas_Object *ewkBackingStore, Eina_Bool value)
 {
-    PRIV_DATA_GET_OR_RETURN(o, priv);
+    PRIV_DATA_GET_OR_RETURN(ewkBackingStore, priv);
     if (priv->view.tile.enable_scale != value)
         priv->view.tile.enable_scale = value;
 }
 #endif
 
 #if ENABLE(TIZEN_TILE_SIZE_SET)
-void ewk_tiled_backing_store_tile_size_get(const Evas_Object *o, Evas_Coord *tw, Evas_Coord *th)
+void ewk_tiled_backing_store_tile_size_get(const Evas_Object *ewkBackingStore, Evas_Coord *tileWidth, Evas_Coord *tileHeight)
 {
-    PRIV_DATA_GET_OR_RETURN(o, priv);
-    if (tw)
-        *tw = priv->view.tile.width;
-    if (th)
-        *th = priv->view.tile.height;
+    PRIV_DATA_GET_OR_RETURN(ewkBackingStore, priv);
+    if (tileWidth)
+        *tileWidth = priv->view.tile.width;
+    if (tileHeight)
+        *tileHeight = priv->view.tile.height;
 }
 
-Eina_Bool ewk_tiled_backing_store_tile_size_set(Evas_Object *o, Evas_Coord tw, Evas_Coord th)
+Eina_Bool ewk_tiled_backing_store_tile_size_set(Evas_Object *ewkBackingStore, Evas_Coord tileWidth, Evas_Coord tileHeight)
 {
-    PRIV_DATA_GET_OR_RETURN(o, priv, EINA_FALSE);
-    if (priv->view.tile.width == tw && priv->view.tile.height == th)
+    PRIV_DATA_GET_OR_RETURN(ewkBackingStore, priv, EINA_FALSE);
+    if (priv->view.tile.width == tileWidth && priv->view.tile.height == tileHeight)
         return EINA_TRUE;
 
-    if (tw <= 0 || th <= 0)
+    if (tileWidth <= 0 || tileHeight <= 0)
         return EINA_FALSE;
 
-    tw = tw >> 1;
-    tw = tw << 1;
-    th = th >> 1;
-    th = th << 1;
-    priv->view.tile.width = tw;
-    priv->view.tile.height = th;
+    tileWidth = tileWidth >> 1;
+    tileWidth = tileWidth << 1;
+    tileHeight = tileHeight >> 1;
+    tileHeight = tileHeight << 1;
+    priv->view.tile.width = tileWidth;
+    priv->view.tile.height = tileHeight;
 #if ENABLE(TIZEN_TILE_MATRIX_LIST)
     ewk_tile_matrix_invalidate_matrices(priv->model.matrix);
 #endif
-    ewk_tile_matrix_tile_size_set(priv->model.matrix, tw, th);
+    ewk_tile_matrix_tile_size_set(priv->model.matrix, tileWidth, tileHeight);
 
     _ewk_tiled_backing_store_flush_tiles(priv);
 
-    long cols, rows;
+    long columns, rows;
     float scale = 1.0;
 #if ENABLE(TIZEN_CAIRO_SCALE_PATCH)
     if (priv->view.tile.enable_scale)
         scale = priv->view.tile.zoom;
 #endif
-    cols = priv->model.width * scale / priv->view.tile.width + 1;
+    columns = priv->model.width * scale / priv->view.tile.width + 1;
     rows = priv->model.height * scale / priv->view.tile.height + 1;
 
-    priv->model.old.cols = priv->model.cur.cols;
-    priv->model.old.rows = priv->model.cur.rows;
-    priv->model.cur.cols = cols;
-    priv->model.cur.rows = rows;
-    ewk_tile_matrix_resize(priv->model.matrix, cols, rows);
+    priv->model.old.columns = priv->model.current.columns;
+    priv->model.old.rows = priv->model.current.rows;
+    priv->model.current.columns = columns;
+    priv->model.current.rows = rows;
+    ewk_tile_matrix_resize(priv->model.matrix, columns, rows);
 
     _ewk_tiled_backing_store_recalc_and_reposition_renderers(priv);
     _ewk_tiled_backing_store_updates_process(priv);
@@ -3020,24 +2684,10 @@ Eina_Bool ewk_tiled_backing_store_tile_size_set(Evas_Object *o, Evas_Coord tw, E
 }
 #endif
 
-#if ENABLE(TIZEN_REPAINT_IDLER)
-void ewk_tiled_backing_store_repaints_on_idler_set(Evas_Object *o, Eina_Bool value)
-{
-    PRIV_DATA_GET_OR_RETURN(o, priv);
-    if (priv->render.on_idler != value)
-        priv->render.on_idler = value;
-}
-
-Eina_Bool ewk_tiled_backing_store_repaints_on_idler_get(Evas_Object *o)
-{
-    PRIV_DATA_GET_OR_RETURN(o, priv, EINA_FALSE);
-    return priv->render.on_idler;
-}
-#endif
 #if ENABLE(TIZEN_VIEW_ACTIVE_SET)
-Eina_Bool ewk_tiled_backing_store_active_set(Evas_Object *o, Eina_Bool value)
+Eina_Bool ewk_tiled_backing_store_active_set(Evas_Object *ewkBackingStore, Eina_Bool value)
 {
-    PRIV_DATA_GET_OR_RETURN(o, priv, EINA_FALSE);
+    PRIV_DATA_GET_OR_RETURN(ewkBackingStore, priv, EINA_FALSE);
 
     if (priv->view.active == value)
         return EINA_TRUE;
@@ -3047,16 +2697,8 @@ Eina_Bool ewk_tiled_backing_store_active_set(Evas_Object *o, Eina_Bool value)
     if (value) {
         _ewk_tiled_backing_store_fill_renderers(priv);
         _ewk_tiled_backing_store_item_process_idler_start(priv);
-#if ENABLE(TIZEN_REPAINT_IDLER)
-        priv->render.next_no_idler = EINA_TRUE;
-#endif
         _ewk_tiled_backing_store_changed(priv);
     } else {
-#if ENABLE(TIZEN_REPAINT_IDLER)
-        _ewk_tiled_backing_store_restore_idler_timer_stop(priv);
-        _ewk_tiled_backing_store_process_requests_flush(priv);
-        _ewk_tiled_backing_store_update_add_process(priv);
-#endif
         _ewk_tiled_backing_store_pre_render_request_flush(priv);
         _ewk_tiled_backing_store_tile_dissociate_all(priv);
     }
@@ -3066,46 +2708,17 @@ Eina_Bool ewk_tiled_backing_store_active_set(Evas_Object *o, Eina_Bool value)
 #endif
 
 #if ENABLE(TIZEN_FIX_RSS_IMAGE_DISPLAY)
-void ewk_tiled_backing_store_zoom_changed_set(Evas_Object *o, Eina_Bool value)
+void ewk_tiled_backing_store_zoom_changed_set(Evas_Object *ewkBackingStore, Eina_Bool value)
 {
-    PRIV_DATA_GET_OR_RETURN(o, priv);
-    priv->view.changed_zoom= value;
+    PRIV_DATA_GET_OR_RETURN(ewkBackingStore, priv);
+    priv->view.changedZoom= value;
 }
 
-Eina_Bool ewk_tiled_backing_store_zoom_changed_get(Evas_Object *o)
+Eina_Bool ewk_tiled_backing_store_zoom_changed_get(Evas_Object *ewkBackingStore)
 {
-    PRIV_DATA_GET_OR_RETURN(o, priv, EINA_FALSE);
-    return priv->view.changed_zoom;
+    PRIV_DATA_GET_OR_RETURN(ewkBackingStore, priv, EINA_FALSE);
+    return priv->view.changedZoom;
 }
 #endif
 
-#if ENABLE(TIZEN_PRE_RENDERING_ADVANCE)
-Eina_Bool ewk_tiled_backing_store_drawing_time_request_add(Ewk_Tiled_Backing_Store_Data *priv, unsigned long col, unsigned long row, float zoom, long drawing_time)
-{
-    Ewk_Heavy_Tile *r;
-
-    MALLOC_OR_OOM_RET(r, sizeof(Ewk_Heavy_Tile), EINA_FALSE);
-
-    priv->render.heavy_tile_list = eina_inlist_append
-        (priv->render.heavy_tile_list, EINA_INLIST_GET(r));
-
-    r->col = col;
-    r->row = row;
-    r->drawing_time = drawing_time;
-    return EINA_TRUE;
-}
 
-Eina_Bool ewk_tiled_backing_store_drawing_time_request_flush(Evas_Object *o)
-{
-    PRIV_DATA_GET_OR_RETURN(o, priv, EINA_FALSE);
-
-    Eina_Inlist **pl = &priv->render.heavy_tile_list;
-    while (*pl) {
-        Ewk_Heavy_Tile *r;
-        r =  EINA_INLIST_CONTAINER_GET(priv->render.heavy_tile_list, Ewk_Heavy_Tile);
-        *pl = eina_inlist_remove(*pl, *pl);
-        free(r);
-    }
-    return EINA_TRUE;
-}
-#endif