[gtk+/gestures] texthandle: Mind the invisible area when moving the handle

[Carlos Garnacho <carlosg src gnome org>]

commit bacd5a1f3dcce3690ebf45b35bf630c19d1cb305
Author: Carlos Garnacho <carlosg gnome org>
Date:   Wed May 21 14:58:50 2014 +0200

    texthandle: Mind the invisible area when moving the handle
    
    The handle is still centered horizontally, but the extra vertical
    space wasn't taken into account, leading to misplacing the dragging
    point (and the handle) during motion events.

 gtk/gtktexthandle.c |   10 +++++++---
 1 files changed, 7 insertions(+), 3 deletions(-)
---
diff --git a/gtk/gtktexthandle.c b/gtk/gtktexthandle.c
index 2261987..ab04955 100644
--- a/gtk/gtktexthandle.c
+++ b/gtk/gtktexthandle.c
@@ -193,14 +193,18 @@ gtk_text_handle_widget_event (GtkWidget     *widget,
            event->motion.state & GDK_BUTTON1_MASK &&
            priv->windows[pos].dragged)
     {
-      gint x, y, width, height;
+      gint x, y, width, height, handle_height;
+      GtkAllocation allocation;
 
-      _gtk_text_handle_get_size (handle, &width, &height);
+      gtk_widget_get_allocation (priv->windows[pos].widget, &allocation);
+      width = allocation.width;
+      height = allocation.height;
+      _gtk_text_handle_get_size (handle, NULL, &handle_height);
       x = event->motion.x - priv->windows[pos].dx + (width / 2);
       y = event->motion.y - priv->windows[pos].dy;
 
       if (pos != GTK_TEXT_HANDLE_POSITION_CURSOR)
-        y += height;
+        y += height - handle_height;
 
       y += priv->windows[pos].pointing_to.height / 2;