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stack: Scope some variables so that the code is clearer

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... that the allocation magic here is for the transition of the
last visible child that's sliding out.
This commit is contained in:
Jasper St. Pierre 2013-11-01 01:49:29 -04:00
parent 499b4bb60f
commit 3e836dd9fc
1 changed files with 35 additions and 36 deletions
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71
gtk/gtkstack.c
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@ -1573,46 +1573,45 @@ gtk_stack_draw_slide (GtkWidget *widget,
{
GtkStack *stack = GTK_STACK (widget);
GtkStackPrivate *priv = gtk_stack_get_instance_private (stack);
GtkAllocation allocation;
gint x = 0;
gint y = 0;
gtk_widget_get_allocation (widget, &allocation);
x = get_bin_window_x (stack, &allocation);
y = get_bin_window_y (stack, &allocation);
switch (priv->active_transition_type)
{
case GTK_STACK_TRANSITION_TYPE_SLIDE_LEFT:
x -= allocation.width;
break;
case GTK_STACK_TRANSITION_TYPE_SLIDE_RIGHT:
x += allocation.width;
break;
case GTK_STACK_TRANSITION_TYPE_SLIDE_UP:
y -= allocation.height;
break;
case GTK_STACK_TRANSITION_TYPE_SLIDE_DOWN:
y += allocation.height;
break;
case GTK_STACK_TRANSITION_TYPE_OVER_UP:
case GTK_STACK_TRANSITION_TYPE_OVER_DOWN:
y = 0;
break;
case GTK_STACK_TRANSITION_TYPE_OVER_LEFT:
case GTK_STACK_TRANSITION_TYPE_OVER_RIGHT:
x = 0;
break;
default:
g_assert_not_reached ();
break;
}
if (priv->last_visible_surface &&
gtk_cairo_should_draw_window (cr, priv->view_window))
{
GtkAllocation allocation;
int x, y;
gtk_widget_get_allocation (widget, &allocation);
x = get_bin_window_x (stack, &allocation);
y = get_bin_window_y (stack, &allocation);
switch (priv->active_transition_type)
{
case GTK_STACK_TRANSITION_TYPE_SLIDE_LEFT:
x -= allocation.width;
break;
case GTK_STACK_TRANSITION_TYPE_SLIDE_RIGHT:
x += allocation.width;
break;
case GTK_STACK_TRANSITION_TYPE_SLIDE_UP:
y -= allocation.height;
break;
case GTK_STACK_TRANSITION_TYPE_SLIDE_DOWN:
y += allocation.height;
break;
case GTK_STACK_TRANSITION_TYPE_OVER_UP:
case GTK_STACK_TRANSITION_TYPE_OVER_DOWN:
y = 0;
break;
case GTK_STACK_TRANSITION_TYPE_OVER_LEFT:
case GTK_STACK_TRANSITION_TYPE_OVER_RIGHT:
x = 0;
break;
default:
g_assert_not_reached ();
break;
}
cairo_save (cr);
cairo_set_source_surface (cr, priv->last_visible_surface, x, y);
cairo_paint (cr);