fixed Issue 282 : second try

[chaz/tint2] / src / util / area.c

diff --git a/src/util/area.c b/src/util/area.c
index 62adbf0c82d63086b33ed3dadef4dfc2cb94d563..dd50c9e10e9e6a933c421c0bc9940bdc377bc07a 100644 (file)
--- a/src/util/area.c
+++ b/src/util/area.c
@@ -31,25 +31,38 @@
 #include "panel.h"
 
 
-/*
-// TODO : layering & drawing loop
-1) browse tree and resize SIZE_BY_CONTENT node
-       - children node are resized before its parent
-       - if 'size' changed then 'resize = 1' on the parent
-2) browse tree and resize SIZE_BY_LAYOUT node
-       - parent node is resized before its children
-       - if 'size' changed then 'resize = 1' on childs with SIZE_BY_LAYOUT
-3) calculate posx of all objects
-4) redraw needed objects
-*/
+/************************************************************
+ * Layering & drawing loop of tint2
+ * 
+ * Areas in tint2 are similar to widgets in a GUI. 
+ * Areas (task, clock, systray, taskbar,...) are nodes in a tree.
+ * The position of each Area is defined by parent's position and brothers on the left.
+ * 
+ * !!! This design is experimental and not yet complete !!!!!!!!!!!!!
+ * 
+ * 1) browse tree and resize SIZE_BY_CONTENT node
+ *     - children node are resized before its parent
+ *     - if 'size' changed then 'resize = 1' on the parent
+ * 2) browse tree and resize SIZE_BY_LAYOUT node
+ *     - parent node is resized before its children
+ *     - if 'size' changed then 'resize = 1' on childs with SIZE_BY_LAYOUT
+ * 3) calculate posx of all objects
+ *     - parent's position is calculated before children's position
+ * 4) redraw needed objects
+ ************************************************************/
+
+void size_by_content (Area *a);
+void size_by_layout (Area *a);
+
 
 void refresh (Area *a)
 {
        // don't draw and resize hide objects
        if (!a->on_screen) return;
 
-       size(a);
-       //size_by_content(a);
+       //size(a);
+       size_by_content(a);
+       size_by_layout(a);
 
        // don't draw transparent objects (without foreground and without background)
        if (a->redraw) {
@@ -93,7 +106,7 @@ void size (Area *a)
        }
 }
 
-// browse tree and resize SIZE_BY_CONTENT node
+
 void size_by_content (Area *a)
 {
        // children node are resized before its parent
@@ -106,27 +119,32 @@ void size_by_content (Area *a)
                a->resize = 0;
 
                // if 'size' changed then 'resize = 1' on the parent
-               a->_resize(a);
-               ((Area*)a->parent)->resize = 1;
+               if (a->_resize) {
+                       a->_resize(a);
+                       ((Area*)a->parent)->resize = 1;
+               }
        }
 }
 
 
-// browse tree and resize SIZE_BY_LAYOUT node
 void size_by_layout (Area *a)
 {
        // parent node is resized before its children
-
        // calculate current area's size
+       GSList *l;
        if (a->resize && a->size_mode == SIZE_BY_LAYOUT) {
                a->resize = 0;
 
-               // if 'size' changed then 'resize = 1' on the parent
-               //if (a->_resize(a)) 
-                       //a->parent->resize = 1;
+               // if 'size' changed then 'resize = 1' on childs with SIZE_BY_LAYOUT
+               if (a->_resize) {
+                       a->_resize(a);
+                       for (l = a->list; l ; l = l->next) {
+                               if (((Area*)l->data)->size_mode == SIZE_BY_LAYOUT)
+                                       ((Area*)l->data)->resize = 1;
+                       }
+               }
        }
 
-       GSList *l;
        for (l = a->list; l ; l = l->next)
                size_by_layout(l->data);        
 }