Evas textblock: Fix markup cache, was completely broken.

The markup cache was completely broken. It was not compared correctly,
so it wasn't even used, but regardless it was cleared just after being
set in some of the cases.

This is the first part of a performance regression fix in elm label.

@fix

diff --git a/src/lib/evas/canvas/evas_object_textblock.c b/src/lib/evas/canvas/evas_object_textblock.c
index 79e6754..11ff1fe 100644 (file)
--- a/src/lib/evas/canvas/evas_object_textblock.c
+++ b/src/lib/evas/canvas/evas_object_textblock.c
@@ -505,7 +505,7 @@ struct _Evas_Object_Textblock
       int                              l, r, t, b;
    } style_pad;
    double                              valign;
-   char                               *markup_text;
+   Eina_Stringshare                   *markup_text;
    void                               *engine_data;
    const char                         *repch;
    const char                         *bidi_delimiters;
@@ -6490,7 +6490,7 @@ _textblock_style_generic_set(Evas_Object *eo_obj, Evas_Textblock_Style *ts,
         Evas_Textblock_Style *old_ts;
         if (o->markup_text)
           {
-             free(o->markup_text);
+             eina_stringshare_del(o->markup_text);
              o->markup_text = NULL;
           }
 
@@ -6848,10 +6848,14 @@ _evas_textblock_text_markup_set(Eo *eo_obj EINA_UNUSED, Evas_Textblock_Data *o,
 {
    Evas_Object_Protected_Data *obj = eo_data_scope_get(eo_obj, EVAS_OBJECT_CLASS);
    evas_object_async_block(obj);
-   if ((text != o->markup_text) && (o->markup_text))
+
      {
-        free(o->markup_text);
-        o->markup_text = NULL;
+        text = eina_stringshare_add(text);
+        if (text == o->markup_text)
+          {
+             /* Text is the same, do nothing. */
+             return;
+          }
      }
 
    _nodes_clear(eo_obj);
@@ -6861,15 +6865,6 @@ _evas_textblock_text_markup_set(Eo *eo_obj EINA_UNUSED, Evas_Textblock_Data *o,
             EINA_INLIST_GET(o->text_nodes),
             EINA_INLIST_GET(o->cursor->node)));
 
-   if (!o->style && !o->style_user)
-     {
-        if (text != o->markup_text)
-          {
-             if (text) o->markup_text = strdup(text);
-          }
-        return;
-     }
-
    evas_textblock_cursor_paragraph_first(o->cursor);
 
    evas_object_textblock_text_markup_prepend(o->cursor, text);
@@ -6882,6 +6877,8 @@ _evas_textblock_text_markup_set(Eo *eo_obj EINA_UNUSED, Evas_Textblock_Data *o,
         EINA_LIST_FOREACH(o->cursors, l, data)
            evas_textblock_cursor_paragraph_first(data);
      }
+
+    o->markup_text = text;
 }
 
 EAPI void
@@ -7151,7 +7148,7 @@ _evas_textblock_text_markup_get(Eo *eo_obj EINA_UNUSED, Evas_Textblock_Data *o)
         free(text_base);
      }
 
-   (((Evas_Textblock_Data *)o)->markup_text) = eina_strbuf_string_steal(txt);
+   (((Evas_Textblock_Data *)o)->markup_text) = eina_stringshare_add(eina_strbuf_string_get(txt));
    eina_strbuf_free(txt);
    markup = (o->markup_text);
 
@@ -9266,7 +9263,7 @@ _evas_textblock_changed(Evas_Textblock_Data *o, Evas_Object *eo_obj)
    o->content_changed = 1;
    if (o->markup_text)
      {
-        free(o->markup_text);
+        eina_stringshare_del(o->markup_text);
         o->markup_text = NULL;
      }