Add helper for getting max. number of layout lines, which does not use the

2008-08-21  Christian Neumair  <cneumair@gnome.org>

	* libnautilus-private/nautilus-icon-canvas-item.c
	(layout_get_full_size), (draw_or_measure_label_text):
	* libnautilus-private/nautilus-icon-container.c
	(nautilus_icon_container_constructor),
	(nautilus_icon_container_get_max_layout_lines_for_pango),
	(nautilus_icon_container_get_max_layout_lines):
	* libnautilus-private/nautilus-icon-container.h:
	Add helper for getting max. number of layout lines, which does not use
	the negative PangoLayout height convention. Use it in
	layout_get_full_size() instead of hardcoding three lines.
	Only connect GConf text ellipsis preferences container callbacks while
	the containers are alive.

svn path=/trunk/; revision=14510

ChangeLog

+2008-08-21  Christian Neumair  <cneumair@gnome.org>
+
+	* libnautilus-private/nautilus-icon-canvas-item.c
+	(layout_get_full_size), (draw_or_measure_label_text):
+	* libnautilus-private/nautilus-icon-container.c
+	(nautilus_icon_container_constructor),
+	(nautilus_icon_container_get_max_layout_lines_for_pango),
+	(nautilus_icon_container_get_max_layout_lines):
+	* libnautilus-private/nautilus-icon-container.h:
+	Add helper for getting max. number of layout lines, which does not use
+	the negative PangoLayout height convention. Use it in
+	layout_get_full_size() instead of hardcoding three lines.
+	Only connect GConf text ellipsis preferences container callbacks while
+	the containers are alive.
+
 2008-08-21  Cosimo Cecchi  <cosimoc@gnome.org>
 
 	* src/file-manager/fm-properties-window.c:

libnautilus-private/nautilus-icon-canvas-item.c

@@ -976,9 +976,10 @@ draw_frame (NautilusIconCanvasItem *item,
  */
 static void
 layout_get_full_size (PangoLayout *layout,
+		      int          max_layout_line_count,
 		      int         *width,
 		      int         *height,
-		      int         *height_for_for_layout,
+		      int         *height_for_layout,
 		      int         *dx)
 {
 	PangoLayoutIter *iter;
@@ -991,24 +992,24 @@ layout_get_full_size (PangoLayout *layout,
 	*dx = total_width - *width;
 	*height = (logical_rect.height + PANGO_SCALE / 2) / PANGO_SCALE;
 
-	if (height_for_for_layout != NULL) {
+	if (height_for_layout != NULL) {
 		/* only use the first three lines for the gridded auto layout */
-		if (pango_layout_get_line_count (layout) <= 3) {
-			*height_for_for_layout = *height;
+		if (pango_layout_get_line_count (layout) <= max_layout_line_count) {
+			*height_for_layout = *height;
 		} else {
-			*height_for_for_layout = 0;
+			*height_for_layout = 0;
 			iter = pango_layout_get_iter (layout);
 			/* VOODOO-TODO, determine number of lines based on the icon size for text besides icon.
 			 * cf. compute_text_rectangle() */
-			for (i = 0; i < 3; i++) {
+			for (i = 0; i < max_layout_line_count; i++) {
 				pango_layout_iter_get_line_extents (iter, NULL, &logical_rect);
-				*height_for_for_layout += (logical_rect.height + PANGO_SCALE / 2) / PANGO_SCALE;
+				*height_for_layout += (logical_rect.height + PANGO_SCALE / 2) / PANGO_SCALE;
 
 				if (!pango_layout_iter_next_line (iter)) {
 					break;
 				}
 
-				*height_for_for_layout += pango_layout_get_spacing (layout);
+				*height_for_layout += pango_layout_get_spacing (layout);
 			}
 			pango_layout_iter_free (iter);
 		}
@@ -1115,14 +1116,18 @@ draw_or_measure_label_text (NautilusIconCanvasItem *item,
 			pango_layout_set_height (editable_layout, G_MININT);
 		} else {
 			pango_layout_set_height (editable_layout,
-						 nautilus_icon_container_get_layout_height (container));
+						 nautilus_icon_container_get_max_layout_lines_for_pango (container));
 		}
-		layout_get_full_size (editable_layout, &editable_width, &editable_height, &editable_for_layout_height, &editable_dx);
+		layout_get_full_size (editable_layout,
+				      nautilus_icon_container_get_max_layout_lines (container),
+				      &editable_width, &editable_height, &editable_for_layout_height, &editable_dx);
 	}
 
 	if (have_additional) {
 		additional_layout = get_label_layout (&details->additional_text_layout, item, details->additional_text);
-		layout_get_full_size (additional_layout, &additional_width, &additional_height, NULL, &additional_dx);
+		layout_get_full_size (additional_layout,
+				      nautilus_icon_container_get_max_layout_lines (container),
+				      &additional_width, &additional_height, NULL, &additional_dx);
 	}
 
 	if (editable_width > additional_width) {

libnautilus-private/nautilus-icon-container.c

@@ -5127,13 +5127,13 @@ nautilus_icon_container_constructor (GType                  type,
 
 	container = NAUTILUS_ICON_CONTAINER (object);
 	if (nautilus_icon_container_get_is_desktop (container)) {
-		eel_preferences_add_callback (NAUTILUS_PREFERENCES_DESKTOP_TEXT_ELLIPSIS_LIMIT,
-					      text_ellipsis_limit_changed_container_callback,
-					      container);
+		eel_preferences_add_callback_while_alive (NAUTILUS_PREFERENCES_DESKTOP_TEXT_ELLIPSIS_LIMIT,
+							  text_ellipsis_limit_changed_container_callback,
+							  container, G_OBJECT (container));
 	} else {
-		eel_preferences_add_callback (NAUTILUS_PREFERENCES_ICON_VIEW_TEXT_ELLIPSIS_LIMIT,
-					      text_ellipsis_limit_changed_container_callback,
-					      container);
+		eel_preferences_add_callback_while_alive (NAUTILUS_PREFERENCES_ICON_VIEW_TEXT_ELLIPSIS_LIMIT,
+							  text_ellipsis_limit_changed_container_callback,
+							  container, G_OBJECT (container));
 	}
 
 	return object;
@@ -5767,7 +5767,7 @@ nautilus_icon_container_instance_init (NautilusIconContainer *container)
 	nautilus_icon_container_theme_changed (container);
 	eel_preferences_add_callback (NAUTILUS_PREFERENCES_THEME,
 				      nautilus_icon_container_theme_changed,
-				      container);	
+				      container);
 
 	if (!setup_prefs) {
 		eel_preferences_add_callback (NAUTILUS_PREFERENCES_ICON_VIEW_TEXT_ELLIPSIS_LIMIT,
@@ -8976,7 +8976,7 @@ nautilus_icon_container_is_layout_vertical (NautilusIconContainer *container)
 }
 
 int
-nautilus_icon_container_get_layout_height (NautilusIconContainer  *container)
+nautilus_icon_container_get_max_layout_lines_for_pango (NautilusIconContainer  *container)
 {
 	int limit;
 
@@ -8993,5 +8993,23 @@ nautilus_icon_container_get_layout_height (NautilusIconContainer  *container)
 	return -limit;
 }
 
+int
+nautilus_icon_container_get_max_layout_lines (NautilusIconContainer  *container)
+{
+	int limit;
+
+	if (nautilus_icon_container_get_is_desktop (container)) {
+		limit = desktop_text_ellipsis_limit;
+	} else {
+		limit = text_ellipsis_limits[container->details->zoom_level];
+	}
+
+	if (limit <= 0) {
+		return G_MAXINT;
+	}
+
+	return limit;
+}
+
 
 #endif /* ! NAUTILUS_OMIT_SELF_CHECK */

libnautilus-private/nautilus-icon-container.h

@@ -252,7 +252,8 @@ void              nautilus_icon_container_set_label_position            (Nautilu
 void              nautilus_icon_container_sort                          (NautilusIconContainer  *container);
 void              nautilus_icon_container_freeze_icon_positions         (NautilusIconContainer  *container);
 
-int               nautilus_icon_container_get_layout_height             (NautilusIconContainer  *container);
+int               nautilus_icon_container_get_max_layout_lines           (NautilusIconContainer  *container);
+int               nautilus_icon_container_get_max_layout_lines_for_pango (NautilusIconContainer  *container);
 
 
 /* operations on all icons */