handle label resizes and wraps properly - add test for it!

SVN revision: 44964

legacy/elementary/data/themes/default.edc

@@ -556,7 +556,7 @@ collections {
 	    description { state: "default" 0.0;
 	       text {
 		  style: "textblock_style";
-		  min: 0 0;
+		  min: 0 1;
 	       }
 	    }
 	 }

legacy/elementary/src/bin/Makefile.am

@@ -68,7 +68,8 @@ test_menu.c \
 test_panel.c \
 test_map.c \
 test_weather.c \
-test_flip.c
+test_flip.c \
+test_label.c
 
 elementary_test_LDADD = $(top_builddir)/src/lib/libelementary.la @ELEMENTARY_EWEATHER_LIBS@
 elementary_test_LDFLAGS =

legacy/elementary/src/bin/test.c

@@ -56,6 +56,7 @@ void test_panel(void *data, Evas_Object *obj, void *event_info);
 void test_map(void *data, Evas_Object *obj, void *event_info);
 void test_weather(void *data, Evas_Object *obj, void *event_info);
 void test_flip(void *data, Evas_Object *obj, void *event_info);
+void test_label(void *data, Evas_Object *obj, void *event_info);
 
 static void
 my_win_del(void *data, Evas_Object *obj, void *event_info)
@@ -194,6 +195,7 @@ my_win_main(void)
    elm_list_item_append(li, "Map", NULL, NULL, test_map, NULL);
    elm_list_item_append(li, "Weather", NULL, NULL, test_weather, NULL);
    elm_list_item_append(li, "Flip", NULL, NULL, test_flip, NULL);
+   elm_list_item_append(li, "Label", NULL, NULL, test_label, NULL);
 
    elm_list_go(li);
 

legacy/elementary/src/bin/test_label.c

@@ -0,0 +1,75 @@
+#include <Elementary.h>
+#ifndef ELM_LIB_QUICKLAUNCH
+
+void
+test_label(void *data, Evas_Object *obj, void *event_info)
+{
+   Evas_Object *win, *bg, *bx, *lb;
+
+   win = elm_win_add(NULL, "label", ELM_WIN_BASIC);
+   elm_win_title_set(win, "Label");
+   elm_win_autodel_set(win, 1);
+
+   bg = elm_bg_add(win);
+   elm_win_resize_object_add(win, bg);
+   evas_object_size_hint_weight_set(bg, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
+   evas_object_show(bg);
+
+   bx = elm_box_add(win);
+   evas_object_size_hint_weight_set(bx, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
+   evas_object_size_hint_align_set(bx, EVAS_HINT_FILL, EVAS_HINT_FILL);
+
+   lb = elm_label_add(win);
+   elm_label_label_set(lb, 
+                       "<b>This is a small label</b>"
+                       );
+   evas_object_size_hint_weight_set(lb, 0.0, 0.0);
+   evas_object_size_hint_align_set(lb, EVAS_HINT_FILL, EVAS_HINT_FILL);
+   elm_box_pack_end(bx, lb);
+   evas_object_show(lb);
+
+   lb = elm_label_add(win);
+   elm_label_label_set(lb, 
+                       "This is a larger label with newlines<br>"
+                       "to make it bigger, bit it won't expand or wrap<br>"
+                       "just be a block of text that can't change its<br>"
+                       "formatting as it's fixed based on text<br>"
+                       );
+   evas_object_size_hint_weight_set(lb, 0.0, 0.0);
+   evas_object_size_hint_align_set(lb, EVAS_HINT_FILL, EVAS_HINT_FILL);
+   elm_box_pack_end(bx, lb);
+   evas_object_show(lb);
+
+   lb = elm_label_add(win);
+   elm_label_line_wrap_set(lb, 1);
+   elm_label_label_set(lb,
+                       "<b>"
+                       "This is more text designed to line-wrap here as "
+                       "This object is resized horizontally. As it is "
+                       "resized vertically though, nothing should change. "
+                       "The amount of space allocated vertically should "
+                       "change as horizontal size changes."
+                       "</b>"
+                       );
+   evas_object_size_hint_weight_set(lb, EVAS_HINT_EXPAND, 0.0);
+   evas_object_size_hint_align_set(lb, EVAS_HINT_FILL, EVAS_HINT_FILL);
+   elm_box_pack_end(bx, lb);
+   evas_object_show(lb);
+
+   lb = elm_label_add(win);
+   elm_label_label_set(lb, 
+                       "This small label set to wrap"
+                       );
+   evas_object_size_hint_weight_set(lb, EVAS_HINT_EXPAND, 0.0);
+   evas_object_size_hint_align_set(lb, EVAS_HINT_FILL, EVAS_HINT_FILL);
+   elm_box_pack_end(bx, lb);
+   evas_object_show(lb);
+
+   elm_win_resize_object_add(win, bx);
+   evas_object_show(bx);
+   
+   evas_object_resize(win, 320, 300);
+
+   evas_object_show(win);
+}
+#endif

legacy/elementary/src/lib/elm_label.c

@@ -14,18 +14,41 @@ struct _Widget_Data
 {
    Evas_Object *lbl;
    const char *label;
+   Evas_Coord lastw;
+   Ecore_Job *deferred_recalc_job;
    Eina_Bool linewrap : 1;
+   Eina_Bool changed : 1;
 };
 
 static void _del_hook(Evas_Object *obj);
 static void _theme_hook(Evas_Object *obj);
 static void _sizing_eval(Evas_Object *obj);
 
+static void
+_elm_win_recalc_job(void *data)
+{
+   Widget_Data *wd = elm_widget_data_get(data);
+   Evas_Coord minw = -1, minh = -1, maxw = -1, maxh = -1;
+   Evas_Coord resw, resh, minminw;
+   
+   wd->deferred_recalc_job = NULL;
+   evas_object_geometry_get(wd->lbl, NULL, NULL, &resw, &resh);
+   resh = 0;
+   minminw = 0;
+   edje_object_size_min_restricted_calc(wd->lbl, &minw, &minh, 0, 0);
+   minminw = minw;
+   edje_object_size_min_restricted_calc(wd->lbl, &minw, &minh, resw, 0);
+   evas_object_size_hint_min_set(data, minminw, minh);
+   maxh = minh;
+   evas_object_size_hint_max_set(data, -1, maxh);
+}
+
 static void
 _del_hook(Evas_Object *obj)
 {
    Widget_Data *wd = elm_widget_data_get(obj);
 
+   if (wd->deferred_recalc_job) ecore_job_del(wd->deferred_recalc_job);
    if (wd->label) eina_stringshare_del(wd->label);
    free(wd);
 }
@@ -50,12 +73,37 @@ _sizing_eval(Evas_Object *obj)
 {
    Widget_Data *wd = elm_widget_data_get(obj);
    Evas_Coord minw = -1, minh = -1, maxw = -1, maxh = -1;
+   Evas_Coord resw, resh, minminw;
 
-   edje_object_size_min_calc(wd->lbl, &minw, &minh);
-   evas_object_size_hint_min_set(obj, minw, minh);
-   evas_object_size_hint_max_set(obj, maxw, maxh);
+   if (wd->linewrap)
+     {
+        evas_object_geometry_get(wd->lbl, NULL, NULL, &resw, &resh);
+        if ((resw == wd->lastw) && (!wd->changed)) return;
+        wd->changed = EINA_FALSE;
+        wd->lastw = resw;
+        if (wd->deferred_recalc_job) ecore_job_del(wd->deferred_recalc_job);
+        wd->deferred_recalc_job = ecore_job_add(_elm_win_recalc_job, obj);
+     }
+   else
+     {
+        evas_object_geometry_get(wd->lbl, NULL, NULL, &resw, &resh);
+        edje_object_size_min_calc(wd->lbl, &minw, &minh);
+        evas_object_size_hint_min_set(obj, minw, minh);
+        maxh = minh;
+        evas_object_size_hint_max_set(obj, maxw, maxh);
+     }
 }
 
+static void 
+_resize(void *data, Evas *e, Evas_Object *obj, void *event_info)
+{
+   Widget_Data *wd = elm_widget_data_get(data);
+   
+   if (wd->linewrap)
+     {
+        _sizing_eval(data);
+     }
+}
 /**
  * Add a new label to the parent
  *
@@ -88,6 +136,10 @@ elm_label_add(Evas_Object *parent)
    wd->label = eina_stringshare_add("<br>");
    edje_object_part_text_set(wd->lbl, "elm.text", "<br>");
    elm_widget_resize_object_set(obj, wd->lbl);
+   
+   evas_object_event_callback_add(wd->lbl, EVAS_CALLBACK_RESIZE, _resize, obj);
+   
+   wd->changed = 1;
    _sizing_eval(obj);
    return obj;
 }
@@ -109,6 +161,7 @@ elm_label_label_set(Evas_Object *obj, const char *label)
    if (wd->label) eina_stringshare_del(wd->label);
    wd->label = eina_stringshare_add(label);
    edje_object_part_text_set(wd->lbl, "elm.text", label);
+   wd->changed = 1;
    _sizing_eval(obj);
 }
 
@@ -142,5 +195,6 @@ elm_label_line_wrap_set(Evas_Object *obj, Eina_Bool wrap)
      _elm_theme_set(wd->lbl, "label", "base", elm_widget_style_get(obj));
    elm_label_label_set(obj, t);
    eina_stringshare_del(t);
+   wd->changed = 1;
    _sizing_eval(obj);
 }