Efl.Ui.Textpath: fix a size problem

Summary:
Textpath set its hint_size using its position and calulated path information.
The path information is calculated using center postion, radius & start angle.
For example, if textpath position is 0,0 and center positon of path is 100,100
and radius 50, then text will be located on the rigth side of textpath object.

Moreover there is another problem.

[Step to reproduce]
1. Launch elementary_test
2. open Efl.Ui.Textpath
3. see circle is not center aligned.
4. click Clockwise 1 ~ 2 times center position is changed repeatedly.

This occurs because textpath size is calculated by position_set.
It does not make sense that changing postion defines its size.

So this patch is setting textpath hint_size using only given center position.
The text will position on the middle of textpath object always.

Reviewers: Hermet, jsuya

Reviewed By: Hermet

Subscribers: cedric, #reviewers, #committers

Tags: #efl

Differential Revision: https://phab.enlightenment.org/D8930

src/lib/elementary/efl_ui_textpath.c

@@ -403,7 +403,7 @@ _text_draw(void *data)
 }
 
 static void
-_path_data_get(Eo *obj, Efl_Ui_Textpath_Data *pd, Eina_Bool set_min)
+_path_data_get(Eo *obj, Efl_Ui_Textpath_Data *pd)
 {
    const Efl_Gfx_Path_Command_Type *cmd;
    const double *points;
@@ -508,10 +508,6 @@ _path_data_get(Eo *obj, Efl_Ui_Textpath_Data *pd, Eina_Bool set_min)
                }
              cmd++;
           }
-        if (set_min)
-          {
-             efl_gfx_hint_size_min_set(obj, rect.size);
-          }
      }
 }
 
@@ -563,7 +559,7 @@ _ellipsis_set(Efl_Ui_Textpath_Data *pd, Eo *obj)
 static void
 _efl_ui_textpath_efl_gfx_path_commit(Eo *obj, Efl_Ui_Textpath_Data *pd)
 {
-   _path_data_get(obj, pd, EINA_TRUE);
+   _path_data_get(obj, pd);
    _sizing_eval(pd);
 }
 
@@ -651,7 +647,7 @@ _path_start_angle_adjust(Eo *obj, Efl_Ui_Textpath_Data *pd)
                                 pd->circle.start_angle - offset_angle,
                                 360);
      }
-   _path_data_get(obj, pd, EINA_TRUE);
+   _path_data_get(obj, pd);
 }
 
 EOLIAN static void
@@ -753,8 +749,34 @@ _efl_ui_textpath_efl_ui_widget_theme_apply(Eo *obj, Efl_Ui_Textpath_Data *pd)
 EOLIAN static void
 _efl_ui_textpath_efl_gfx_entity_position_set(Eo *obj, Efl_Ui_Textpath_Data *pd, Eina_Position2D pos)
 {
+   Eina_Position2D opos, diff;
+   Efl_Ui_Textpath_Segment *seg;
+   double sx, sy, csx, csy, cex, cey, ex, ey;
+
+   opos = efl_gfx_entity_position_get(obj);
+
+   diff.x = pos.x - opos.x;
+   diff.y = pos.y - opos.y;
+
    efl_gfx_entity_position_set(efl_super(obj, MY_CLASS), pos);
-   _path_data_get(obj, pd, EINA_FALSE);
+
+   EINA_INLIST_FOREACH(pd->segments, seg)
+     {
+        eina_bezier_values_get(&seg->bezier, &sx, &sy, &csx, &csy,
+                                             &cex, &cey, &ex, &ey);
+        sx += diff.x;
+        sy += diff.y;
+        csx += diff.x;
+        csy += diff.y;
+        cex += diff.x;
+        cey += diff.y;
+        ex += diff.x;
+        ey += diff.y;
+
+        eina_bezier_values_set(&seg->bezier, sx, sy, csx, csy,
+                                             cex, cey, ex, ey);
+     }
+
    _text_draw(pd);
 }
 
@@ -792,9 +814,11 @@ _efl_ui_textpath_circle_set(Eo *obj, Efl_Ui_Textpath_Data *pd, double x, double
                                 radius * 2,  start_angle, 360);
      }
 
-   _path_data_get(obj, pd, EINA_TRUE);
+   _path_data_get(obj, pd);
    _path_start_angle_adjust(obj, pd);
    _sizing_eval(pd);
+
+   efl_gfx_hint_size_min_set(obj, EINA_SIZE2D(x * 2, y * 2));
 }
 
 EOLIAN static int