efl_ui_textpath: add the efl_ui_textpath_text_user_style_set API for applying the user text style

Summary:
For the text style customizing, added the new API to apply user text style.
The following example is the user style sample.

DEFAULT='font_size=16 color=#F00 underline=on underline_color=#00ffff'";

{F3899541}

Test Plan:
1. run elementary_text (textpath)
2. toggle user style check box
3. see the result

Reviewers: Hermet, kimcinoo, jsuya, bu5hm4n

Reviewed By: Hermet

Subscribers: cedric, #reviewers, #committers

Tags: #efl

Differential Revision: https://phab.enlightenment.org/D11953

src/bin/elementary/test_ui_textpath.c

@@ -56,6 +56,20 @@ _short_text_changed_cb(void *data, const Efl_Event *event)
      efl_text_set(txtpath, TEST_UI_TEXTPATH_LONG_TEXT);
 }
 
+static char *user_style = "DEFAULT='font_size=16 color=#F00 underline=on underline_color=#00ffff'";
+
+static void
+_user_style_changed_cb(void *data, const Efl_Event *event)
+{
+   Evas_Object *txtpath = data;
+   Eina_Bool val = elm_check_selected_get(event->object);
+
+   if (val)
+     elm_textpath_text_user_style_set(txtpath, user_style);
+   else
+     elm_textpath_text_user_style_set(txtpath, NULL);
+}
+
 static void
 _change_shape_cb(void *data, Evas_Object *obj EINA_UNUSED, void *event_info EINA_UNUSED)
 {
@@ -138,6 +152,12 @@ test_ui_textpath(void *data EINA_UNUSED, Evas_Object *obj EINA_UNUSED, void *eve
    elm_box_pack_end(hbox, chk);
    efl_gfx_entity_visible_set(chk, EINA_TRUE);
 
+   chk = efl_add(EFL_UI_CHECK_CLASS, win);
+   efl_text_set(chk, "User style");
+   efl_event_callback_add(chk, EFL_UI_EVENT_SELECTED_CHANGED, _user_style_changed_cb, txtpath);
+   elm_box_pack_end(hbox, chk);
+   efl_gfx_entity_visible_set(chk, EINA_TRUE);
+
    hbox = elm_box_add(win);
    elm_box_horizontal_set(hbox, EINA_TRUE);
    efl_gfx_hint_weight_set(hbox, EFL_GFX_HINT_EXPAND, EFL_GFX_HINT_EXPAND);

src/lib/elementary/efl_ui_textpath.c

@@ -15,6 +15,8 @@
 
 #define MY_CLASS EFL_UI_TEXTPATH_CLASS
 #define MY_CLASS_NAME "Efl.Ui.Textpath"
+#define LEGACY_TEXT_PART_NAME "elm.text"
+#define EFL_UI_TEXT_PART_NAME "efl.text"
 
 #define SLICE_DEFAULT_NO 99
 typedef struct _Efl_Ui_Textpath_Point Efl_Ui_Textpath_Point;
@@ -54,6 +56,7 @@ struct _Efl_Ui_Textpath_Data
 {
    Evas_Object *text_obj;
    char *text;
+   Eina_Strbuf *user_style;
    Efl_Gfx_Path *path;
    struct {
         double x, y;
@@ -529,13 +532,40 @@ _sizing_eval(Efl_Ui_Textpath_Data *pd)
 }
 
 static void
-_textpath_ellipsis_set(Efl_Ui_Textpath_Data *pd, Eina_Bool enabled)
+_textpath_ellipsis_set(Eo *obj, Efl_Ui_Textpath_Data *pd, Eina_Bool enabled)
 {
-   edje_object_part_text_style_user_pop(pd->text_obj, "efl.text");
+   char *text_part;
+   if (elm_widget_is_legacy(obj))
+     text_part = LEGACY_TEXT_PART_NAME;
+   else
+     text_part = EFL_UI_TEXT_PART_NAME;
+
+   edje_object_part_text_style_user_pop(pd->text_obj, text_part);
 
    if (enabled)
-     edje_object_part_text_style_user_push(pd->text_obj, "efl.text",
-                                           "DEFAULT='ellipsis=1.0'");
+     {
+        if (pd->user_style)
+          {
+             eina_strbuf_replace_first(pd->user_style, "DEFAULT='", "DEFAULT='ellipsis=1.0 ");
+             edje_object_part_text_style_user_push(pd->text_obj, text_part,
+                                                   eina_strbuf_string_get(pd->user_style));
+          }
+        else
+          {
+             edje_object_part_text_style_user_push(pd->text_obj, text_part,
+                                                   "DEFAULT='ellipsis=1.0 '");
+             return;
+          }
+     }
+   else
+     {
+        if (pd->user_style)
+          {
+             eina_strbuf_replace_first(pd->user_style, "DEFAULT='ellipsis=1.0 ", "DEFAULT='");
+             edje_object_part_text_style_user_push(pd->text_obj, text_part,
+                                                   eina_strbuf_string_get(pd->user_style));
+          }
+     }
 }
 
 static void
@@ -563,7 +593,7 @@ _ellipsis_set(Efl_Ui_Textpath_Data *pd, Eo *obj)
           }
      }
    efl_gfx_entity_size_set(pd->text_obj, EINA_SIZE2D(w,  h));
-   _textpath_ellipsis_set(pd, is_ellipsis);
+   _textpath_ellipsis_set(obj, pd, is_ellipsis);
 }
 
 static void
@@ -713,6 +743,7 @@ _efl_ui_textpath_efl_object_destructor(Eo *obj, Efl_Ui_Textpath_Data *pd)
 
    if (pd->text) free(pd->text);
    if (pd->text_obj) evas_object_del(pd->text_obj);
+   if (pd->user_style) eina_strbuf_free(pd->user_style);
    EINA_INLIST_FREE(pd->segments, seg)
      {
         pd->segments = eina_inlist_remove(pd->segments, EINA_INLIST_GET(seg));
@@ -1013,5 +1044,37 @@ elm_textpath_circle_set(Eo *obj, double x, double y, double radius, double start
    efl_gfx_hint_size_restricted_min_set(obj, EINA_SIZE2D(x * 2, y * 2));
 }
 
+EAPI void
+elm_textpath_text_user_style_set(Eo *obj, const char *style)
+{
+   EFL_UI_TEXTPATH_DATA_GET(obj, pd);
+   if (!pd) return;
+
+   char *text_part;
+   if (elm_widget_is_legacy(obj))
+     text_part = LEGACY_TEXT_PART_NAME;
+   else
+     text_part = EFL_UI_TEXT_PART_NAME;
+
+   if (pd->user_style)
+     {
+        edje_object_part_text_style_user_pop(pd->text_obj, text_part);
+        eina_strbuf_free(pd->user_style);
+        pd->user_style = NULL;
+     }
+
+   if (style)
+     {
+        pd->user_style = eina_strbuf_new();
+        eina_strbuf_append(pd->user_style, style);
+
+        edje_object_part_text_style_user_pop(pd->text_obj, text_part);
+        edje_object_part_text_style_user_push(pd->text_obj, text_part, eina_strbuf_string_get(pd->user_style));
+     }
+
+   _ellipsis_set(pd, obj);
+   _sizing_eval(pd);
+}
+
 #include "efl_ui_textpath_legacy_eo.c"
 

src/lib/elementary/elm_textpath_legacy.h

@@ -12,4 +12,16 @@ typedef Eo Elm_Textpath;
  */
 EAPI Evas_Object                 *elm_textpath_add(Evas_Object *parent);
 
+/**
+ * @brief Set the user text style
+ *
+ * @param[in] obj The textpath object
+ * @param[in] style The user text style. If the sytle is $null, the default style will be applied
+ *
+ * @ingroup Elm_Textpath
+ *
+ * @since 1.25
+ */
+EAPI void                        elm_textpath_text_user_style_set(Evas_Object *obj, const char *style);
+
 #include "efl_ui_textpath_eo.legacy.h"