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gtkwindow: Calculate the opaque window based off of the style

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https://bugzilla.gnome.org/show_bug.cgi?id=706922
This commit is contained in:
Jasper St. Pierre
2013-08-22 13:20:10 -04:00
parent 08fbba4558
commit 3c2c3ab6f9
1 changed files with 83 additions and 0 deletions
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83
gtk/gtkwindow.c
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@@ -35,6 +35,8 @@
#include "gtkwindowprivate.h"
#include "gtkaccelgroupprivate.h"
#include "gtkbindings.h"
#include "gtkcsscornervalueprivate.h"
#include "gtkcssrgbavalueprivate.h"
#include "gtkcssshadowsvalueprivate.h"
#include "gtkkeyhash.h"
#include "gtkmain.h"
@@ -6468,6 +6470,85 @@ update_frame_extents (GtkWindow *window,
#endif
}
static void
corner_rect (cairo_rectangle_int_t *rect,
const GtkCssValue *value)
{
rect->width = _gtk_css_corner_value_get_x (value, 100);
rect->height = _gtk_css_corner_value_get_y (value, 100);
}
static void
subtract_corners_from_region (cairo_region_t *region,
cairo_rectangle_int_t *extents,
GtkStyleContext *context)
{
cairo_rectangle_int_t rect;
gtk_style_context_save (context);
add_window_frame_style_class (context);
corner_rect (&rect, _gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_BORDER_TOP_LEFT_RADIUS));
rect.x = extents->x;
rect.y = extents->y;
cairo_region_subtract_rectangle (region, &rect);
corner_rect (&rect, _gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_BORDER_TOP_RIGHT_RADIUS));
rect.x = extents->x + extents->width - rect.width;
rect.y = extents->y;
cairo_region_subtract_rectangle (region, &rect);
corner_rect (&rect, _gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_BORDER_BOTTOM_LEFT_RADIUS));
rect.x = extents->x;
rect.y = extents->y + extents->height - rect.height;
cairo_region_subtract_rectangle (region, &rect);
corner_rect (&rect, _gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_BORDER_BOTTOM_RIGHT_RADIUS));
rect.x = extents->x + extents->width - rect.width;
rect.y = extents->y + extents->height - rect.height;
cairo_region_subtract_rectangle (region, &rect);
gtk_style_context_restore (context);
}
static void
update_opaque_region (GtkWindow *window,
GtkBorder *border,
const GtkAllocation *allocation)
{
const GdkRGBA *color;
cairo_region_t *opaque_region;
GtkStyleContext *context;
if (!gtk_widget_get_realized (GTK_WIDGET (window)))
return;
context = gtk_widget_get_style_context (GTK_WIDGET (window));
color = _gtk_css_rgba_value_get_rgba (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_BACKGROUND_COLOR));
if (color->alpha >= 1.0)
{
cairo_rectangle_int_t rect;
rect.x = border->left;
rect.y = border->top;
rect.width = allocation->width - border->left - border->right;
rect.height = allocation->height - border->top - border->bottom;
opaque_region = cairo_region_create_rectangle (&rect);
subtract_corners_from_region (opaque_region, &rect, context);
}
else
{
opaque_region = NULL;
}
gdk_window_set_opaque_region (gtk_widget_get_window (GTK_WIDGET (window)), opaque_region);
cairo_region_destroy (opaque_region);
}
/* _gtk_window_set_allocation:
* @window: a #GtkWindow
* @allocation: the original allocation for the window
@@ -6516,6 +6597,8 @@ _gtk_window_set_allocation (GtkWindow *window,
if (priv->client_decorated)
update_frame_extents (window, &window_border);
update_opaque_region (window, &window_border, &child_allocation);
if (priv->title_box != NULL &&
priv->decorated &&
!priv->fullscreen)