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/*
* Copyright (C) 2011 Red Hat, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* Author: Ales Kozumplik <akozumpl@redhat.com>
*/
/* based on an example by Ray Strode <rstrode@redhat.com> */
/**
* SECTION: lightbox
* @title: Lightbox
* @short_description: Functions to draw a window over a shaded background
*
* The lightbox is a set of functions used to display one window (a dialog or
* other similar window, typically) over top of the main window in the
* background. The main window is shaded out to make the foreground window
* stand out more, as well as to reinforce to the user that the background
* window may not be interacted with.
*/
#include <cairo.h>
#include <gdk/gdk.h>
#include <gtk/gtk.h>
#include "lightbox.h"
static void anaconda_lb_move_window_to_parent(GtkWidget *parent,
GdkEventConfigure *e,
GtkWindow *window)
{
GdkWindow *p_window, *w_window;
int pwidth, pheight, width, height, px, py, x, y, nx, ny;
if (!GTK_IS_WIDGET(parent) || !GTK_IS_WINDOW(window))
return;
p_window = gtk_widget_get_window (parent);
w_window = gtk_widget_get_window (GTK_WIDGET(window));
if (!GDK_IS_WINDOW(p_window) || !GDK_IS_WINDOW(w_window))
return;
pwidth = gdk_window_get_width (p_window);
pheight = gdk_window_get_height (p_window);
gdk_window_get_position(p_window, &px, &py);
width = gdk_window_get_width (w_window);
height = gdk_window_get_height (w_window);
gdk_window_get_position(w_window, &x, &y);
nx = px + pwidth / 2 - width / 2;
ny = py + pheight / 2 - height / 2;
if (x != nx || y != ny)
{
gdk_window_move (w_window, nx, ny);
gdk_window_restack(w_window, p_window, TRUE);
}
}
/**
* anaconda_lb_show_over:
* @window: (in) A #GtkWindow
*
* Show lightbox over window.
*
* Return value: (transfer none): the lightbox widget.
*
* Since: 1.0
*/
GtkWindow *anaconda_lb_show_over(GtkWindow *window)
{
GtkWindow *lightbox;
GdkWindow *w_window;
GdkWindow *l_window;
int width, height;
cairo_t *cr;
cairo_pattern_t *pattern;
cairo_surface_t *surface;
lightbox = (GTK_WINDOW(gtk_window_new(GTK_WINDOW_TOPLEVEL)));
gtk_window_set_transient_for(lightbox, window);
gtk_window_set_decorated(lightbox, FALSE);
gtk_window_set_has_resize_grip(lightbox, FALSE);
gtk_window_set_position(lightbox, GTK_WIN_POS_CENTER_ON_PARENT);
gtk_window_set_type_hint (lightbox, GDK_WINDOW_TYPE_HINT_SPLASHSCREEN);
gtk_widget_set_app_paintable(GTK_WIDGET(lightbox), TRUE);
w_window = gtk_widget_get_window (GTK_WIDGET(window));
width = gdk_window_get_width(w_window);
height = gdk_window_get_height(w_window);
gtk_window_set_default_size(lightbox, width, height);
gtk_widget_realize(GTK_WIDGET(lightbox));
l_window = gtk_widget_get_window (GTK_WIDGET(lightbox));
gdk_window_set_background_pattern (l_window, NULL);
gtk_widget_show(GTK_WIDGET(lightbox));
surface = gdk_window_create_similar_surface(l_window,
CAIRO_CONTENT_COLOR_ALPHA,
width, height);
cr = cairo_create (surface);
gdk_cairo_set_source_window(cr, w_window, 0, 0);
cairo_paint(cr);
cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.5);
cairo_paint(cr);
cairo_destroy(cr);
pattern = cairo_pattern_create_for_surface (surface);
gdk_window_set_background_pattern(l_window, pattern);
cairo_pattern_destroy (pattern);
/* make the shade move with the parent window */
g_signal_connect(window, "configure-event",
G_CALLBACK (anaconda_lb_move_window_to_parent), lightbox);
return lightbox;
}
/**
* anaconda_lb_destroy:
* @lightbox: a #GtkWindow
*
* Destroys the previously used lightbox.
*
* Since: 1.0
*/
void anaconda_lb_destroy(GtkWindow *lightbox)
{
gtk_widget_destroy(GTK_WIDGET(lightbox));
}
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