From b5622690da3d65b22c4a84356d32679435e842f2 Mon Sep 17 00:00:00 2001
From: ChunEon Park <chuneon.park@samsung.com>
Date: Thu, 30 May 2013 02:34:54 +0900
Subject: [PATCH] elementary/mapbuf - fix the mapbuf to be enabled before it's
 content is entirely rendered.

This will fix the bad-cases that content is not updated properly if they are changed outside of the viewport

commit 1850e735698f926cad8303cfe96610b5c58410d1
Author: ChunEon Park <hermet>@hermet.pe.kr>
Date: Thu May 30 02:31:38 2013 +0900

Change-Id: I380ebbc7ac9ecd738c2978b1ce2843ae7c0e542b
---
 src/lib/elm_mapbuf.c        | 45 ++++++++++++++++++++++++++++++++++++++++++---
 src/lib/elm_widget_mapbuf.h |  1 +
 2 files changed, 43 insertions(+), 3 deletions(-)

diff --git a/src/lib/elm_mapbuf.c b/src/lib/elm_mapbuf.c
index a7b31e9..865c717 100644
--- a/src/lib/elm_mapbuf.c
+++ b/src/lib/elm_mapbuf.c
@@ -103,16 +103,41 @@ _configure(Evas_Object *obj, Eina_Bool update_force)
    ELM_MAPBUF_DATA_GET(obj, sd);
 
    if (!sd->content) return;
-   Evas_Coord x, y, w, h, x2, y2, w2, h2;
+   Eina_Bool inside_all = EINA_FALSE;
+   Evas_Coord x, y, w, h, x2, y2, w2, h2, vx, vy, vw, vh;
    evas_object_geometry_get(ELM_WIDGET_DATA(sd)->resize_obj, &x, &y, &w, &h);
    evas_object_geometry_get(sd->content, &x2, &y2, &w2, &h2);
+
    if ((update_force) || ((x != x2) || (y != y2) || (w != w2) || (h != h2)))
      {
-        if (!sd->enabled)
+        Evas *e = evas_object_evas_get(obj);
+        evas_output_viewport_get(e, &vx, &vy, &vw, &vh);
+
+        /* Apply no changes once the content is rendered fully one time. We
+           aren't sure that the content is updated correctly if the content was
+           outside of the viewport, especially it has many child members. Some
+           type of children will do the lazy updated (ie, textblock) on right
+           before the rendering. It means they lose the update time cause
+           of the mapbuf since the mapbuf tries nochange forcefully. */
+        if (!sd->inside_view[0] && ((x >= vx) && (x <= (vx + vw))))
+          sd->inside_view[0] = EINA_TRUE;
+        if (!sd->inside_view[1] && ((y >= vy) && (y <= (vy + vh))))
+          sd->inside_view[1] = EINA_TRUE;
+
+        if (!sd->inside_view[2] && (((x + w) >= vx) && ((x + w) <= (vx + vw))))
+          sd->inside_view[2] = EINA_TRUE;
+
+        if (!sd->inside_view[3] && (((y + h) >= vy) && ((y + h) <= (vy + vh))))
+          sd->inside_view[3] = EINA_TRUE;
+
+        if (sd->inside_view[0] && sd->inside_view[1] && sd->inside_view[2] &&
+            sd->inside_view[3])
+             inside_all = EINA_TRUE;
+
+        if (!sd->enabled || !inside_all)
           evas_object_move(sd->content, x, y);
         else
           {
-             Evas *e = evas_object_evas_get(obj);
              evas_smart_objects_calculate(e);
              ELM_WIDGET_CHECK_OR_RETURN(obj);
              evas_nochange_push(e);
@@ -145,6 +170,17 @@ _elm_mapbuf_smart_resize(Evas_Object *obj,
    _configure(obj, EINA_FALSE);
 }
 
+static void
+_elm_mapbuf_inside_view_reset(Evas_Object *obj)
+{
+   ELM_MAPBUF_DATA_GET(obj, sd);
+
+   sd->inside_view[0] = EINA_FALSE;
+   sd->inside_view[1] = EINA_FALSE;
+   sd->inside_view[2] = EINA_FALSE;
+   sd->inside_view[3] = EINA_FALSE;
+}
+
 static Eina_Bool
 _elm_mapbuf_smart_content_set(Evas_Object *obj,
                               const char *part,
@@ -173,6 +209,8 @@ _elm_mapbuf_smart_content_set(Evas_Object *obj,
    else
      evas_object_color_set(ELM_WIDGET_DATA(sd)->resize_obj, 0, 0, 0, 0);
 
+   _elm_mapbuf_inside_view_reset(obj);
+
    _sizing_eval(obj);
    _configure(obj, EINA_TRUE);
 
@@ -317,6 +355,7 @@ elm_mapbuf_enabled_set(Evas_Object *obj,
    if (sd->enabled == enabled) return;
    sd->enabled = enabled;
 
+   _elm_mapbuf_inside_view_reset(obj);
    if (sd->content) evas_object_static_clip_set(sd->content, sd->enabled);
    _configure(obj, EINA_TRUE);
 }
diff --git a/src/lib/elm_widget_mapbuf.h b/src/lib/elm_widget_mapbuf.h
index 7d4d8e6..aa527a9 100644
--- a/src/lib/elm_widget_mapbuf.h
+++ b/src/lib/elm_widget_mapbuf.h
@@ -125,6 +125,7 @@ struct _Elm_Mapbuf_Smart_Data
 
    Evas_Object          *content;
 
+   Eina_Bool             inside_view[4];
    Eina_Bool             enabled : 1;
    Eina_Bool             smooth : 1;
    Eina_Bool             alpha : 1;
-- 
2.7.4