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Fix a problem with 'resize grip avoidance' in scrollbars

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We need to be a little more careful when determining the overlap
between the new allocation and the grip area. This was causing
vertical scrollbars in evince to overlap with the grip.
This commit is contained in:
Matthias Clasen 2010-10-08 22:04:33 -04:00
parent 2f8f0d8eab
commit 9d750ad13e
1 changed files with 38 additions and 22 deletions
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34
gtk/gtkrange.c
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@ -1581,7 +1581,7 @@ modify_allocation_for_window_grip (GtkWidget *widget,
{
GtkRange *range = GTK_RANGE (widget);
GtkRangePrivate *priv = range->priv;
GtkWidget *window;
GtkWidget *window, *parent;
GdkRectangle grip_rect;
GdkRectangle translated_rect;
gint x;
@ -1600,18 +1600,35 @@ modify_allocation_for_window_grip (GtkWidget *widget,
x = 0;
y = 0;
/* Translate the stepper's area into window coords */
if (gtk_widget_translate_coordinates (gtk_widget_get_parent (widget),
window,
allocation->x,
allocation->y,
&x,
&y))
/* Translate the stepper's area into window coords.
* This is slightly tricky. We can't just use
* gtk_widget_translate_coordinates (widget, window, 0, 0, &x, &y)
* since that translates wrt to the _current_ allocation
* and will lead to alternating between overlap and nonoverlap
* for successive allocations.
* Therefore, we find the window-widget to whose window allocation
* is relative, and translate from there upwards.
*/
parent = widget;
while (gtk_widget_get_window (parent) == gtk_widget_get_window (widget) &&
parent != window)
{
parent = gtk_widget_get_parent (parent);
}
if (parent == window)
translated_rect = *allocation;
else
{
gtk_widget_translate_coordinates (gtk_widget_get_parent (widget),
window,
allocation->x, allocation->y,
&x, &y);
translated_rect.x = x;
translated_rect.y = y;
translated_rect.width = allocation->width;
translated_rect.height = allocation->height;
}
/* If the stepper button intersects the window resize grip.. */
if (gdk_rectangle_intersect (&grip_rect, &translated_rect, NULL))
@ -1629,7 +1646,6 @@ modify_allocation_for_window_grip (GtkWidget *widget,
return TRUE;
}
}
return FALSE;
}