[baobab] ringschart: tooltip improvements

[Stefano Facchini <sfacchini src gnome org>]

commit 3928dcb056e20c2954b0c6c34012d0b5ed5f0ef5
Author: Stefano Facchini <stefano facchini gmail com>
Date:   Sun Jul 13 22:55:31 2014 +0200

    ringschart: tooltip improvements
    
    1. Tooltips are now painted starting from the biggest element.
    2. Text is ellipsized if too long, instead of just hiding the tooltip.

 src/baobab-ringschart.vala |    9 +++------
 1 files changed, 3 insertions(+), 6 deletions(-)
---
diff --git a/src/baobab-ringschart.vala b/src/baobab-ringschart.vala
index 22d8550..7d00c3b 100644
--- a/src/baobab-ringschart.vala
+++ b/src/baobab-ringschart.vala
@@ -129,6 +129,8 @@ namespace Baobab {
                 layout.set_markup (markup, -1);
                 layout.set_indent (0);
                 layout.set_spacing (0);
+                layout.set_width (Pango.SCALE * q_width / 2);
+                layout.set_ellipsize (Pango.EllipsizeMode.END);
                 Pango.Rectangle layout_rect;
                 layout.get_pixel_extents (null, out layout_rect);
 
@@ -149,11 +151,6 @@ namespace Baobab {
                 tooltip_rect.width = layout_rect.width + hpadding;
                 tooltip_rect.height = layout_rect.height + vpadding;
 
-                // check tooltip's width is not greater than half of the widget
-                if (tooltip_rect.width > q_width) {
-                    continue;
-                }
-
                 // translate tooltip rectangle and edge angles to the original quadrant
                 var a = middle_angle;
                 int i = 0;
@@ -228,7 +225,7 @@ namespace Baobab {
                 if (highlighted_item != null &&
                     item.parent != null &&
                     item.parent.data == highlighted_item) {
-                    subtip_items.prepend (item);
+                    subtip_items.append (item);
                 }
             }