X-Git-Url: https://git.dogcows.com/gitweb?p=chaz%2Ftint2;a=blobdiff_plain;f=src%2Futil%2Farea.c;h=adec3c9ae55da5720aa28179e0be3f132788f9d8;hp=dd50c9e10e9e6a933c421c0bc9940bdc377bc07a;hb=63bbffa4af17926ba2d52728883988eae402b07a;hpb=c803db3d16c62949428b4e0e2fcd85b8889a7ff3

diff --git a/src/util/area.c b/src/util/area.c
index dd50c9e..adec3c9 100644
--- a/src/util/area.c
+++ b/src/util/area.c
@@ -32,27 +32,158 @@
 
 
 /************************************************************
- * Layering & drawing loop of tint2
+ * !!! This design is experimental and not yet fully implemented !!!!!!!!!!!!!
  * 
+ * DATA ORGANISATION :
  * 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.
+ * All graphical objects (panel, taskbar, task, systray, clock, ...) 'inherit' an abstract class 'Area'.
+ * This class 'Area' manage the background, border, size, position and padding.
+ * Area is at the begining of each object (&object == &area).
  * 
- * !!! This design is experimental and not yet complete !!!!!!!!!!!!!
+ * tint2 define one panel per monitor. And each panel have a tree of Area.
+ * The root of the tree is Panel.Area. And task, clock, systray, taskbar,... are nodes.
  * 
- * 1) browse tree and resize SIZE_BY_CONTENT node
- * 	- children node are resized before its parent
+ * The tree give the localisation of each object :
+ * - tree's root is in the background while tree's leafe are foreground objects
+ * - position of a node/Area depend on the layout : parent's position (posx, posy), size of previous brothers and parent's padding
+ * - size of a node/Area depend on the content (SIZE_BY_CONTENT objects) or on the layout (SIZE_BY_LAYOUT objects) 
+ * 
+ * DRAWING AND LAYERING ENGINE :
+ * Redrawing an object (like the clock) could come from an 'external event' (date change) 
+ * or from a 'layering event' (position change).
+ * The following 'drawing engine' take care of :
+ * - posx/posy of all Area
+ * - 'layering event' propagation between object
+ * 1) browse tree SIZE_BY_CONTENT
+ *  - resize SIZE_BY_CONTENT node : children are resized before 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
+ * 2) browse tree SIZE_BY_LAYOUT and POSITION
+ *  - resize SIZE_BY_LAYOUT node : parent is resized before 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
+ *  - calculate position (posx,posy) : parent is calculated before children
+ * 	- if 'position' changed then 'redraw = 1'
+ * 3) browse tree REDRAW
+ *  - redraw needed objects : parent is drawn before children
+ *
+ * CONFIGURE PANEL'S LAYOUT :
+ * 'panel_items' parameter (in config) define the list and the order of nodes in tree's panel.
+ * 'panel_items = SC' define a panel with just Systray and Clock.
+ * So the tree 'Panel.Area' will have 2 childs (Systray and Clock).
+ *
  ************************************************************/
 
-void size_by_content (Area *a);
-void size_by_layout (Area *a);
+void init_rendering(void *obj, int pos)
+{
+	Area *a = (Area*)obj;
+	
+	// initialize fixed position/size
+	GSList *l;
+	for (l = a->list; l ; l = l->next) {
+		Area *child = ((Area*)l->data);
+		if (panel_horizontal) {
+			child->posy = pos + a->bg->border.width + a->paddingy;
+			child->height = a->height - (2 * (a->bg->border.width + a->paddingy));
+			init_rendering(child, child->posy);
+		}
+		else {
+			child->posx = pos + a->bg->border.width + a->paddingy;
+			child->width = a->width - (2 * (a->bg->border.width + a->paddingy));
+			init_rendering(child, child->posx);
+		}
+	}
+}
+
+
+void rendering(void *obj)
+{
+	Panel *panel = (Panel*)obj;
+	
+	size_by_content(&panel->area);
+	size_by_layout(&panel->area, 0, 0);
+	
+	refresh(&panel->area);
+}
+
+
+void size_by_content (Area *a)
+{
+	// don't resize hiden objects
+	if (!a->on_screen) return;
+
+	// children node are resized before its parent
+	GSList *l;
+	for (l = a->list; l ; l = l->next)
+		size_by_content(l->data);
+	
+	// calculate area's size
+	if (a->resize && a->size_mode == SIZE_BY_CONTENT) {
+		a->resize = 0;
+
+		if (a->_resize) {
+			if (a->_resize(a)) {
+				// 'size' changed => 'resize = 1' on the parent and redraw object
+				((Area*)a->parent)->resize = 1;
+			}
+			a->redraw = 1;
+		}
+	}
+}
+
+
+void size_by_layout (Area *a, int pos, int level)
+{
+	// don't resize hiden objects
+	if (!a->on_screen) return;
+
+	// parent node is resized before its children
+	// calculate area's size
+	GSList *l;
+	if (a->resize && a->size_mode == SIZE_BY_LAYOUT) {
+		a->resize = 0;
+
+		if (a->_resize) {
+			if (a->_resize(a)) {
+				// if 'size' changed then 'resize = 1' on childs with SIZE_BY_LAYOUT
+				for (l = a->list; l ; l = l->next) {
+					if (((Area*)l->data)->size_mode == SIZE_BY_LAYOUT)
+						((Area*)l->data)->resize = 1;
+				}
+			}
+		}
+	}
+
+	// update position of childs
+	pos += a->paddingxlr + a->bg->border.width;
+	int i=0;
+	for (l = a->list; l ; l = l->next) {
+		Area *child = ((Area*)l->data);
+		if (!child->on_screen) continue;
+		i++;
+		
+		if (panel_horizontal) {
+			if (pos != child->posx) {
+				// pos changed => redraw
+				child->posx = pos;
+				child->redraw = 1;
+			}
+		}
+		else {
+			if (pos != child->posy) {
+				// pos changed => redraw
+				child->posy = pos;
+				child->redraw = 1;
+			}
+		}
+		//printf("level %d, object %d, pos %d\n", level, i, pos);
+		
+		size_by_layout(child, pos, level+1);
+		
+		if (panel_horizontal)
+			pos += child->width + a->paddingx;
+		else
+			pos += child->height + a->paddingx;
+	}
+}
 
 
 void refresh (Area *a)
@@ -60,17 +191,14 @@ void refresh (Area *a)
 	// don't draw and resize hide objects
 	if (!a->on_screen) return;
 
-	//size(a);
-	size_by_content(a);
-	size_by_layout(a);
-
 	// don't draw transparent objects (without foreground and without background)
 	if (a->redraw) {
 		a->redraw = 0;
 		// force redraw of child
 		GSList *l;
 		for (l = a->list ; l ; l = l->next)
-			set_redraw(l->data);
+			((Area*)l->data)->redraw = 1;
+//			set_redraw(l->data);
 
 		//printf("draw area posx %d, width %d\n", a->posx, a->width);
 		draw(a);
@@ -87,66 +215,83 @@ void refresh (Area *a)
 }
 
 
-void size (Area *a)
+int resize_by_layout(void *obj)
 {
-	GSList *l;
+	Area *child, *a = (Area*)obj;
+	int size, nb_by_content=0, nb_by_layout=0;
 
-	if (a->resize) {
-		a->resize = 0;
-		// force the resize of childs
-		for (l = a->list; l ; l = l->next) {
-			Area *area = (Area*)l->data;
-			area->resize = 1;
-			size(area);
+	if (panel_horizontal) {		
+		// detect free size for SIZE_BY_LAYOUT's Area
+		size = a->width - (2 * (a->paddingxlr + a->bg->border.width));
+		GSList *l;
+		for (l = a->list ; l ; l = l->next) {
+			child = (Area*)l->data;
+			if (child->on_screen && child->size_mode == SIZE_BY_CONTENT) {
+				size -= child->width;
+				nb_by_content++;
+			}
+			if (child->on_screen && child->size_mode == SIZE_BY_LAYOUT)
+				nb_by_layout++;
+		}
+		if (nb_by_content+nb_by_layout)
+			size -= ((nb_by_content+nb_by_layout-1) * a->paddingx);
+		//printf("resize_panel : size_panel %d, size_layout %d\n", panel->area.width, size);
+
+		int width=0, modulo=0;
+		if (nb_by_layout) {
+			width = size / nb_by_layout;
+			modulo = size % nb_by_layout;
 		}
 
-		// resize can generate a redraw
-		if (a->_resize)
-			a->_resize(a);
-	}
-}
-
-
-void size_by_content (Area *a)
-{
-	// children node are resized before its parent
-	GSList *l;
-	for (l = a->list; l ; l = l->next)
-		size_by_content(l->data);
-	
-	// calculate current area's size
-	if (a->resize && a->size_mode == SIZE_BY_CONTENT) {
-		a->resize = 0;
-
-		// if 'size' changed then 'resize = 1' on the parent
-		if (a->_resize) {
-			a->_resize(a);
-			((Area*)a->parent)->resize = 1;
+		// resize SIZE_BY_LAYOUT objects
+		for (l = a->list ; l ; l = l->next) {
+			child = (Area*)l->data;
+			if (child->on_screen && child->size_mode == SIZE_BY_LAYOUT) {
+				child->width = width;
+				child->resize = 1;
+				if (modulo) {
+					child->width++;
+					modulo--;
+				}
+			}
 		}
 	}
-}
-
+	else {
+		// detect free size for SIZE_BY_LAYOUT's Area
+		size = a->height - (2 * (a->paddingxlr + a->bg->border.width));
+		GSList *l;
+		for (l = a->list ; l ; l = l->next) {
+			child = (Area*)l->data;
+			if (child->on_screen && child->size_mode == SIZE_BY_CONTENT) {
+				size -= child->height;
+				nb_by_content++;
+			}
+			if (child->on_screen && child->size_mode == SIZE_BY_LAYOUT)
+				nb_by_layout++;
+		}
+		if (nb_by_content+nb_by_layout)
+			size -= ((nb_by_content+nb_by_layout-1) * a->paddingx);
 
-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;
+		int height=0, modulo=0;
+		if (nb_by_layout) {
+			height = size / nb_by_layout;
+			modulo = size % nb_by_layout;
+		}
 
-		// 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;
+		// resize SIZE_BY_LAYOUT objects
+		for (l = a->list ; l ; l = l->next) {
+			child = (Area*)l->data;
+			if (child->on_screen && child->size_mode == SIZE_BY_LAYOUT) {
+				child->height = height;
+				child->resize = 1;
+				if (modulo) {
+					child->height++;
+					modulo--;
+				}
 			}
 		}
 	}
-
-	for (l = a->list; l ; l = l->next)
-		size_by_layout(l->data);	
+	return 0;
 }
 
 
@@ -159,6 +304,26 @@ void set_redraw (Area *a)
 		set_redraw(l->data);
 }
 
+void hide(Area *a)
+{
+	Area *parent = (Area*)a->parent;
+
+	a->on_screen = 0;
+	parent->resize = 1;
+	if (panel_horizontal)
+		a->width = 0;
+	else
+		a->height = 0;
+}
+
+void show(Area *a)
+{
+	Area *parent = (Area*)a->parent;
+
+	a->on_screen = 1;
+	parent->resize = 1;
+	a->resize = 1;
+}
 
 void draw (Area *a)
 {