filepreview now does a partial preview of text files and shell scripts

SVN revision: 77370

diff --git a/src/bin/e_widget_filepreview.c b/src/bin/e_widget_filepreview.c
index 35908e525372354dac942da5ec68a51614bd88ec..4903cbee4d7939722a7a98f3cd1fa9bd39e283ad 100644 (file)
--- a/src/bin/e_widget_filepreview.c
+++ b/src/bin/e_widget_filepreview.c
@@ -5,6 +5,8 @@
 # include <Emotion.h>
 #endif
 
+#define FILEPREVIEW_TEXT_PREVIEW_SIZE 2048
+
 typedef struct _E_Widget_Data E_Widget_Data;
 struct _E_Widget_Data
 {
@@ -27,6 +29,7 @@ struct _E_Widget_Data
    Evas_Object *o_preview_scrollframe;
    Evas_Coord   preview_w, preview_h;
    int w, h;
+   Ecore_Thread *preview_text_file_thread;
    char        *preview_extra_text;
    char        *preview_size_text;
    char        *preview_owner_text;
@@ -37,7 +40,9 @@ struct _E_Widget_Data
    double vid_pct;
    Eina_Bool mime_icon : 1;
    Eina_Bool is_dir : 1;
+   Eina_Bool is_txt : 1;
    Eina_Bool prev_is_fm : 1;
+   Eina_Bool prev_is_txt : 1;
    Eina_Bool prev_is_video : 1;
 };
 
@@ -50,6 +55,7 @@ static char *_e_wid_file_time_get(time_t st_modtime);
 static void _e_wid_fprev_img_update(E_Widget_Data *wd, const char *path, const char *key);
 static void _e_wid_del_hook(Evas_Object *obj);
 static void _e_wid_fprev_preview_reset(E_Widget_Data *wd);
+static void _e_wid_fprev_preview_txt(E_Widget_Data *wd);
 static void _e_wid_fprev_preview_fm(E_Widget_Data *wd);
 
 static void
@@ -123,7 +129,7 @@ static void
 _e_wid_fprev_img_update(E_Widget_Data *wd, const char *path, const char *key)
 {
    if (!path) return;
-   if (wd->is_dir) return;
+   if (wd->is_dir || wd->is_txt) return;
    e_widget_preview_thumb_set(wd->o_preview_preview, path, key, wd->w, wd->h);
 }
 
@@ -148,8 +154,10 @@ _e_wid_fprev_clear_widgets(E_Widget_Data *wd)
    CLRWID(o_preview_time_entry);
    CLRWID(o_preview_preview);
    CLRWID(o_preview_scrollframe);
-   wd->prev_is_fm = wd->prev_is_video = EINA_FALSE;
+   wd->is_dir = wd->is_txt = wd->prev_is_fm = wd->prev_is_video = EINA_FALSE;
    wd->vid_pct = 0;
+   if (wd->preview_text_file_thread) ecore_thread_cancel(wd->preview_text_file_thread);
+   wd->preview_text_file_thread = NULL;
 }
 
 #ifdef HAVE_EMOTION
@@ -319,7 +327,7 @@ _e_wid_fprev_preview_fs_widgets(E_Widget_Data *wd)
 }
 
 static void
-_e_wid_fprev_preview_file_widgets(E_Widget_Data *wd)
+_e_wid_fprev_preview_file_widgets(E_Widget_Data *wd, Eina_Bool dir, Eina_Bool txt)
 {
    Evas *evas = evas_object_evas_get(wd->obj);
    Evas_Object *o;
@@ -339,10 +347,13 @@ _e_wid_fprev_preview_file_widgets(E_Widget_Data *wd)
    o = e_widget_table_add(evas, 0);
    e_widget_disabled_set(o, 1);
    wd->o_preview_properties_table = o;
+   wd->is_dir = dir;
+   wd->is_txt = txt;
 
-   if (e_util_strcmp(wd->mime, "inode/directory"))
+   if (!dir)
      {
-        WIDROW(_("Resolution:"), o_preview_extra, o_preview_extra_entry, 100);
+        if (!txt)
+          WIDROW(_("Resolution:"), o_preview_extra, o_preview_extra_entry, 100);
         WIDROW(_("Size:"), o_preview_size, o_preview_size_entry, 100);
      }
    WIDROW(_("Owner:"), o_preview_owner, o_preview_owner_entry, 100);
@@ -532,24 +543,33 @@ _e_wid_fprev_preview_file(E_Widget_Data *wd)
      }
 #endif
    if (is_fs) return;
-   _e_wid_fprev_preview_file_widgets(wd);
-   
+
    wd->mime_icon = EINA_FALSE;
    size = _e_wid_file_size_get(st.st_size);
    owner = _e_wid_file_user_get(st.st_uid);
    perms = _e_wid_file_perms_get(st.st_mode, st.st_uid, st.st_gid);
    mtime = _e_wid_file_time_get(st.st_mtime);
    wd->is_dir = S_ISDIR(st.st_mode);
+   if (wd->mime && st.st_size && (!wd->is_dir))
+     {
+        
+        wd->is_txt = !strncmp(wd->mime, "text/", 5);
+        if (!wd->is_txt)
+          wd->is_txt = !strcmp(wd->mime, "application/x-shellscript");
+     }
+   _e_wid_fprev_preview_file_widgets(wd, wd->is_dir, wd->is_txt);
 
    _e_wid_fprev_preview_reset(wd);
    _e_wid_fprev_preview_fm(wd);
+   _e_wid_fprev_preview_txt(wd);
    _e_wid_fprev_img_update(wd, wd->path, NULL);
 
    e_widget_size_min_get(wd->o_preview_list, &mw, &mh);
    e_widget_size_min_set(wd->obj, mw, mh);
-   if (e_util_strcmp(wd->mime, "inode/directory"))
+   if (!wd->is_dir)
      {
-        e_widget_entry_text_set(wd->o_preview_extra_entry, "");
+        if (!wd->is_txt)
+          e_widget_entry_text_set(wd->o_preview_extra_entry, "");
         e_widget_entry_text_set(wd->o_preview_size_entry, size);
      }
    e_widget_entry_text_set(wd->o_preview_owner_entry, owner);
@@ -674,7 +694,8 @@ _e_wid_del_hook(Evas_Object *obj)
    E_FREE(wd->preview_time_text);
    eina_stringshare_del(wd->path);
    eina_stringshare_del(wd->mime);
-
+   if (wd->preview_text_file_thread) ecore_thread_cancel(wd->preview_text_file_thread);
+   wd->preview_text_file_thread = NULL;
    free(wd);
 }
 
@@ -682,15 +703,17 @@ static void
 _e_wid_fprev_preview_reset(E_Widget_Data *wd)
 {
    Evas_Object *o;
-   if (wd->is_dir) return;
-   if (wd->o_preview_scrollframe && wd->prev_is_fm)
+   
+   if (wd->o_preview_scrollframe && (wd->prev_is_fm || wd->prev_is_txt))
      {
         evas_object_del(wd->o_preview_scrollframe);
         wd->o_preview_scrollframe = wd->o_preview_preview = NULL;
      }
+   if (wd->preview_text_file_thread) ecore_thread_cancel(wd->preview_text_file_thread);
+   wd->preview_text_file_thread = NULL;
    if (wd->o_preview_preview) return;
    o = e_widget_preview_add(evas_object_evas_get(wd->obj), wd->w, wd->h);
-   wd->prev_is_fm = EINA_FALSE;
+   wd->prev_is_txt = wd->prev_is_fm = EINA_FALSE;
    e_widget_disabled_set(o, 1);
    wd->o_preview_preview = o;
    evas_object_smart_callback_add(o, "preview_update",
@@ -737,6 +760,89 @@ _e_wid_cb_file_deleted(void *data, Evas_Object *obj, void *event __UNUSED__)
    evas_object_smart_callback_call(data, "files_deleted", obj);
 }
 
+static void
+_e_wid_fprev_preview_txt_read_cancel(void *data __UNUSED__, Ecore_Thread *eth __UNUSED__)
+{
+}
+
+static void
+_e_wid_fprev_preview_txt_read_end(void *data __UNUSED__, Ecore_Thread *eth __UNUSED__)
+{
+}
+
+static void
+_e_wid_fprev_preview_txt_read_notify(void *data, Ecore_Thread *eth __UNUSED__, void *msg)
+{
+   E_Widget_Data *wd = data;
+
+   //INF("text='%s'", (char*)msg);
+   edje_object_part_text_set(wd->o_preview_preview, "e.textblock.message", msg);
+   free(msg);
+}
+
+static void
+_e_wid_fprev_preview_txt_read(void *data __UNUSED__, Ecore_Thread *eth)
+{
+   char *text;
+   char buf[FILEPREVIEW_TEXT_PREVIEW_SIZE];
+   FILE *f;
+
+   text = ecore_thread_global_data_find("fprev_file");
+   if (!text) return;
+   f = fopen(text, "r");
+   if (!f) return;
+   fread(buf, sizeof(char), sizeof(buf), f);
+   ecore_thread_feedback(eth, evas_textblock_text_utf8_to_markup(NULL, buf));
+   fclose(f);
+}
+
+static void
+_e_wid_fprev_preview_txt(E_Widget_Data *wd)
+{
+   Evas_Object *o;
+   int mw;
+
+   if (!wd->is_txt) return;
+   if (!wd->path) return;
+   if (wd->o_preview_preview && (!wd->prev_is_txt))
+     {
+        evas_object_del(wd->o_preview_preview);
+        wd->o_preview_preview = NULL;
+     }
+   if (!wd->o_preview_preview)
+     {
+        Evas *evas;
+
+        evas = evas_object_evas_get(wd->obj);
+        o = edje_object_add(evas);
+        /* using dialog theme for now because it's simple, common, and doesn't require all
+         * themes to be updated
+         */
+        e_theme_edje_object_set(o, "base/theme/dialog", "e/widgets/dialog/text");
+        wd->o_preview_preview = o;
+        wd->prev_is_txt = EINA_TRUE;
+        evas_object_resize(o, wd->w, wd->h);
+        o = e_widget_scrollframe_simple_add(evas, o);
+        wd->o_preview_scrollframe = o;
+        e_widget_size_min_get(wd->o_preview_list, &mw, NULL);
+        e_widget_size_min_set(o, wd->w, wd->h);
+        evas_object_propagate_events_set(wd->o_preview_preview, 0);
+        e_widget_table_object_append(wd->o_preview_preview_table,
+                                     o, 0, 0, 1, 1, 1, 1, 1, 1);
+        e_widget_list_object_repack(wd->o_preview_list,
+                                    wd->o_preview_preview_table,
+                                    1, 1, 0.5);
+        e_widget_list_object_repack(wd->o_preview_list,
+                                    wd->o_preview_properties_table,
+                                    1, 1, 0.5);
+     }
+   ecore_thread_global_data_del("fprev_file");
+   if (wd->preview_text_file_thread) ecore_thread_cancel(wd->preview_text_file_thread);
+   ecore_thread_global_data_add("fprev_file", strdup(wd->path), free, 0);
+   wd->preview_text_file_thread = ecore_thread_feedback_run(_e_wid_fprev_preview_txt_read, _e_wid_fprev_preview_txt_read_notify,
+                                                            _e_wid_fprev_preview_txt_read_end, _e_wid_fprev_preview_txt_read_cancel, wd, EINA_FALSE);
+}
+
 static void
 _e_wid_fprev_preview_fm(E_Widget_Data *wd)
 {
@@ -871,5 +977,5 @@ e_widget_filepreview_filemode_force(Evas_Object *obj)
    if (!obj) return;
    wd = e_widget_data_get(obj);
    if (!wd) return;
-   _e_wid_fprev_preview_file_widgets(wd);
+   _e_wid_fprev_preview_file_widgets(wd, 0, 0);
 }