diff options
Diffstat (limited to 'mate-panel/panel-background-monitor.c')
| -rw-r--r-- | mate-panel/panel-background-monitor.c | 410 |
1 files changed, 0 insertions, 410 deletions
diff --git a/mate-panel/panel-background-monitor.c b/mate-panel/panel-background-monitor.c deleted file mode 100644 index 4c33aedf..00000000 --- a/mate-panel/panel-background-monitor.c +++ /dev/null @@ -1,410 +0,0 @@ -/* - * panel-background-monitor.c: - * - * Copyright (C) 2001, 2002 Ian McKellar <[email protected]> - * 2002 Sun Microsystems, Inc. - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Library General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This library 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 - * Library General Public License for more details. - * - * You should have received a copy of the GNU Library General Public - * License along with this library; if not, write to the - * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, - * Boston, MA 02110-1301, USA. - * - * Authors: - * Ian McKellar <[email protected]> - * Mark McLoughlin <[email protected]> - */ - -#include <config.h> - -#ifndef HAVE_X11 -#error file should only be compiled when HAVE_X11 is enabled -#endif - -#include <glib.h> -#include <glib-object.h> -#include <gdk/gdk.h> -#include <gdk/gdkx.h> -#include <cairo-xlib.h> -#include <X11/Xlib.h> -#include <X11/Xatom.h> - -#define MATE_DESKTOP_USE_UNSTABLE_API -#include <libmate-desktop/mate-bg.h> - -#include "panel-background-monitor.h" -#include "panel-util.h" - -enum { - CHANGED, - LAST_SIGNAL -}; - -static void panel_background_monitor_changed (PanelBackgroundMonitor *monitor); - -static GdkFilterReturn panel_background_monitor_xevent_filter (GdkXEvent *xevent, - GdkEvent *event, - gpointer data); - -struct _PanelBackgroundMonitorClass { - GObjectClass parent_class; - void (*changed) (PanelBackgroundMonitor *monitor); -}; - -struct _PanelBackgroundMonitor { - GObject parent_instance; - - GdkScreen *screen; - - Window xwindow; - GdkWindow *gdkwindow; - - Atom xatom; - GdkAtom gdkatom; - - cairo_surface_t *surface; - GdkPixbuf *gdkpixbuf; - - int width; - int height; - - gboolean display_grabbed; -}; - -G_DEFINE_TYPE (PanelBackgroundMonitor, panel_background_monitor, G_TYPE_OBJECT) - -static PanelBackgroundMonitor *global_background_monitor = NULL; - -static guint signals [LAST_SIGNAL] = { 0 }; - -gboolean gdk_window_check_composited_wm(GdkWindow* window) -{ - g_return_val_if_fail (GDK_IS_X11_WINDOW (window), TRUE); - return gdk_screen_is_composited(gdk_window_get_screen(window)); -} - -static void -panel_background_monitor_finalize (GObject *object) -{ - PanelBackgroundMonitor *monitor; - - monitor = PANEL_BACKGROUND_MONITOR (object); - - gdk_window_remove_filter ( - monitor->gdkwindow, panel_background_monitor_xevent_filter, monitor); - g_signal_handlers_disconnect_by_func (monitor->screen, - panel_background_monitor_changed, monitor); - - if (monitor->surface) - cairo_surface_destroy (monitor->surface); - monitor->surface= NULL; - - if (monitor->gdkpixbuf) - g_object_unref (monitor->gdkpixbuf); - monitor->gdkpixbuf = NULL; - - G_OBJECT_CLASS (panel_background_monitor_parent_class)->finalize (object); -} - -static void -panel_background_monitor_class_init (PanelBackgroundMonitorClass *klass) -{ - GObjectClass *object_class = G_OBJECT_CLASS (klass); - - signals [CHANGED] = - g_signal_new ("changed", - G_OBJECT_CLASS_TYPE (object_class), - G_SIGNAL_RUN_LAST, - G_STRUCT_OFFSET (PanelBackgroundMonitorClass, changed), - NULL, NULL, - g_cclosure_marshal_VOID__VOID, - G_TYPE_NONE, 0); - - object_class->finalize = panel_background_monitor_finalize; -} - -static void -panel_background_monitor_init (PanelBackgroundMonitor *monitor) -{ - monitor->screen = NULL; - - monitor->gdkwindow = NULL; - monitor->xwindow = None; - - monitor->gdkatom = gdk_atom_intern_static_string ("_XROOTPMAP_ID"); - monitor->xatom = gdk_x11_atom_to_xatom (monitor->gdkatom); - - monitor->surface = NULL; - monitor->gdkpixbuf = NULL; - - monitor->display_grabbed = FALSE; -} - -static void -panel_background_monitor_connect_to_screen (PanelBackgroundMonitor *monitor, - GdkScreen *screen) -{ - if (monitor->screen != NULL && monitor->gdkwindow != NULL) { - gdk_window_remove_filter (monitor->gdkwindow, - panel_background_monitor_xevent_filter, - monitor); - } - - monitor->screen = screen; - g_signal_connect_swapped (screen, "size-changed", - G_CALLBACK (panel_background_monitor_changed), monitor); - - monitor->gdkwindow = gdk_screen_get_root_window (screen); - monitor->xwindow = GDK_WINDOW_XID (monitor->gdkwindow); - - gdk_window_add_filter ( - monitor->gdkwindow, panel_background_monitor_xevent_filter, monitor); - - gdk_window_set_events ( - monitor->gdkwindow, - gdk_window_get_events (monitor->gdkwindow) | GDK_PROPERTY_CHANGE_MASK); -} - -static PanelBackgroundMonitor * -panel_background_monitor_new (GdkScreen *screen) -{ - PanelBackgroundMonitor *monitor; - - monitor = g_object_new (PANEL_TYPE_BACKGROUND_MONITOR, NULL); - - panel_background_monitor_connect_to_screen (monitor, screen); - - return monitor; -} - -PanelBackgroundMonitor * -panel_background_monitor_get_for_screen (GdkScreen *screen) -{ - g_return_val_if_fail (GDK_IS_X11_SCREEN (screen), NULL); - - if (!global_background_monitor) { - global_background_monitor = panel_background_monitor_new (screen); - - g_object_add_weak_pointer (G_OBJECT (global_background_monitor), - (void **) &global_background_monitor); - - return global_background_monitor; - } - - return g_object_ref (global_background_monitor); -} - -static void -panel_background_monitor_changed (PanelBackgroundMonitor *monitor) -{ - if (monitor->surface) - cairo_surface_destroy (monitor->surface); - monitor->surface = NULL; - - if (monitor->gdkpixbuf) - g_object_unref (monitor->gdkpixbuf); - monitor->gdkpixbuf = NULL; - - g_signal_emit (monitor, signals [CHANGED], 0); -} - -static GdkFilterReturn -panel_background_monitor_xevent_filter (GdkXEvent *xevent, - GdkEvent *event, - gpointer data) -{ - PanelBackgroundMonitor *monitor; - XEvent *xev; - - g_return_val_if_fail (PANEL_IS_BACKGROUND_MONITOR (data), GDK_FILTER_CONTINUE); - - monitor = PANEL_BACKGROUND_MONITOR (data); - xev = (XEvent *) xevent; - - if (xev->type == PropertyNotify && - xev->xproperty.atom == monitor->xatom && - xev->xproperty.window == monitor->xwindow) - panel_background_monitor_changed (monitor); - - return GDK_FILTER_CONTINUE; -} - -static GdkPixbuf * -panel_background_monitor_tile_background (PanelBackgroundMonitor *monitor, - int width, - int height) -{ - GdkPixbuf *retval; - int tilewidth, tileheight; - - retval = gdk_pixbuf_new (GDK_COLORSPACE_RGB, FALSE, 8, width, height); - - tilewidth = gdk_pixbuf_get_width (monitor->gdkpixbuf); - tileheight = gdk_pixbuf_get_height (monitor->gdkpixbuf); - - if (tilewidth == 1 && tileheight == 1) { - guchar *pixels; - int n_channels; - guint32 pixel = 0; - - n_channels = gdk_pixbuf_get_n_channels (monitor->gdkpixbuf); - pixels = gdk_pixbuf_get_pixels (monitor->gdkpixbuf); - - if (pixels) { - if (n_channels == 4) - pixel = ((guint32 *) pixels) [0]; - else if (n_channels == 3) - pixel = pixels [0] << 24 | pixels [1] << 16 | pixels [2] << 8; - } - - gdk_pixbuf_fill (retval, pixel); - } else { - unsigned char *data; - cairo_t *cr; - cairo_surface_t *surface; - cairo_pattern_t *pattern; - - data = g_malloc (width * height * 4); - if (!data) - return NULL; - - surface = cairo_image_surface_create_for_data (data, - CAIRO_FORMAT_RGB24, - width, height, - width * 4); - cr = cairo_create (surface); - cairo_set_source_rgb (cr, 1, 1, 1); - cairo_paint (cr); - - gdk_cairo_set_source_pixbuf (cr, monitor->gdkpixbuf, 0, 0); - pattern = cairo_get_source (cr); - cairo_pattern_set_extend (pattern, CAIRO_EXTEND_REPEAT); - cairo_rectangle (cr, 0, 0, width, height); - cairo_fill (cr); - - cairo_destroy (cr); - cairo_surface_destroy (surface); - - retval = panel_util_cairo_rgbdata_to_pixbuf (data, - width, height); - - g_free (data); - } - - return retval; -} - -static void -panel_background_monitor_setup_pixbuf (PanelBackgroundMonitor *monitor) -{ - GdkDisplay *display; - int rwidth, rheight; - int pwidth, pheight; - - display = gdk_screen_get_display (monitor->screen); - - gdk_x11_display_grab (display); - monitor->display_grabbed = TRUE; - - if (!monitor->surface) - monitor->surface = mate_bg_get_surface_from_root (monitor->screen); - - if (!monitor->surface) - { - g_warning ("couldn't get background pixmap\n"); - gdk_x11_display_ungrab (display); - monitor->display_grabbed = FALSE; - return; - } - - pwidth = cairo_xlib_surface_get_width (monitor->surface); - pheight = cairo_xlib_surface_get_height (monitor->surface); - - gdk_window_get_geometry (monitor->gdkwindow, - NULL, NULL, &rwidth, &rheight); - - monitor->width = MIN (pwidth, rwidth); - monitor->height = MIN (pheight, rheight); - - g_assert (monitor->gdkpixbuf == NULL); - monitor->gdkpixbuf = gdk_pixbuf_get_from_surface (monitor->surface, - 0, 0, - monitor->width, monitor->height); - - gdk_x11_display_ungrab (display); - monitor->display_grabbed = FALSE; - - if (monitor->gdkpixbuf == NULL) - return; - - if ((monitor->width < rwidth || monitor->height < rheight)) { - GdkPixbuf *tiled; - - tiled = panel_background_monitor_tile_background ( - monitor, rwidth, rheight); - g_object_unref (monitor->gdkpixbuf); - monitor->gdkpixbuf = tiled; - - monitor->width = rwidth; - monitor->height = rheight; - } -} - -GdkPixbuf * -panel_background_monitor_get_region (PanelBackgroundMonitor *monitor, - int x, - int y, - int width, - int height) -{ - GdkPixbuf *pixbuf, *tmpbuf; - int subwidth, subheight; - int subx, suby; - - g_return_val_if_fail (monitor, NULL); - g_return_val_if_fail (GDK_IS_X11_WINDOW (monitor->gdkwindow), NULL); - - if (!monitor->gdkpixbuf) - panel_background_monitor_setup_pixbuf (monitor); - - if (!monitor->gdkpixbuf) - return NULL; - - subwidth = MIN (width, monitor->width - x); - subheight = MIN (height, monitor->height - y); - /* if x or y are negative numbers */ - subwidth = MIN (subwidth, width + x); - subheight = MIN (subheight, height + y); - - subx = MAX (x, 0); - suby = MAX (y, 0); - - if ((subwidth <= 0) || (subheight <= 0) || - (monitor->width-x < 0) || (monitor->height-y < 0) ) - /* region is completely offscreen */ - return gdk_pixbuf_new (GDK_COLORSPACE_RGB, FALSE, 8, - width, height); - - pixbuf = gdk_pixbuf_new_subpixbuf ( - monitor->gdkpixbuf, subx, suby, subwidth, subheight); - - if ((subwidth < width) || (subheight < height)) { - tmpbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, FALSE, 8, - width, height); - gdk_pixbuf_copy_area (pixbuf, 0, 0, subwidth, subheight, - tmpbuf, (x < 0) ? -x : 0, (y < 0) ? -y : 0); - g_object_unref (pixbuf); - pixbuf = tmpbuf; - } - - return pixbuf; -} |