diff options
Diffstat (limited to 'libmate-desktop/mate-bg-crossfade.c')
| -rw-r--r-- | libmate-desktop/mate-bg-crossfade.c | 385 |
1 files changed, 320 insertions, 65 deletions
diff --git a/libmate-desktop/mate-bg-crossfade.c b/libmate-desktop/mate-bg-crossfade.c index 970b567..b7cc993 100644 --- a/libmate-desktop/mate-bg-crossfade.c +++ b/libmate-desktop/mate-bg-crossfade.c @@ -38,19 +38,14 @@ #include <mate-bg.h> #include "mate-bg-crossfade.h" -#if !GTK_CHECK_VERSION(3, 0, 0) -#define cairo_surface_t GdkPixmap -#define cairo_create gdk_cairo_create -#define cairo_set_source_surface gdk_cairo_set_source_pixmap -#define cairo_surface_destroy g_object_unref -#endif - struct _MateBGCrossfadePrivate { GdkWindow *window; + GtkWidget *widget; int width; int height; cairo_surface_t *fading_surface; + cairo_surface_t *start_surface; cairo_surface_t *end_surface; gdouble start_time; gdouble total_duration; @@ -143,6 +138,11 @@ mate_bg_crossfade_finalize (GObject *object) fade->priv->fading_surface = NULL; } + if (fade->priv->start_surface != NULL) { + cairo_surface_destroy (fade->priv->start_surface); + fade->priv->start_surface = NULL; + } + if (fade->priv->end_surface != NULL) { cairo_surface_destroy (fade->priv->end_surface); fade->priv->end_surface = NULL; @@ -210,7 +210,10 @@ mate_bg_crossfade_init (MateBGCrossfade *fade) { fade->priv = MATE_BG_CROSSFADE_GET_PRIVATE (fade); + fade->priv->window = NULL; + fade->priv->widget = NULL; fade->priv->fading_surface = NULL; + fade->priv->start_surface = NULL; fade->priv->end_surface = NULL; fade->priv->timeout_id = 0; } @@ -245,7 +248,6 @@ tile_surface (cairo_surface_t *surface, cairo_surface_t *copy; cairo_t *cr; -#if GTK_CHECK_VERSION (3, 0, 0) if (surface == NULL) { copy = gdk_window_create_similar_surface (gdk_get_default_root_window (), @@ -258,9 +260,6 @@ tile_surface (cairo_surface_t *surface, cairo_surface_get_content (surface), width, height); } -#else - copy = gdk_pixmap_new(surface, width, height, surface == NULL? 24 : -1); -#endif cr = cairo_create (copy); @@ -303,6 +302,48 @@ tile_surface (cairo_surface_t *surface, return copy; } +#if !GTK_CHECK_VERSION (3, 0, 0) +static cairo_surface_t * +tile_pixmap (GdkPixmap *pixmap, + int width, + int height) +{ + cairo_surface_t *copy; + cairo_t *cr; + + copy = gdk_window_create_similar_surface (gdk_get_default_root_window (), + CAIRO_CONTENT_COLOR, + width, height); + cr = cairo_create (copy); + + if (pixmap != NULL) + { + cairo_pattern_t *pattern; + gdk_cairo_set_source_pixmap (cr, pixmap, 0.0, 0.0); + pattern = cairo_get_source (cr); + cairo_pattern_set_extend (pattern, CAIRO_EXTEND_REPEAT); + } + else + { + GtkStyle *style; + style = gtk_widget_get_default_style (); + gdk_cairo_set_source_color (cr, &style->bg[GTK_STATE_NORMAL]); + } + + cairo_paint (cr); + + if (cairo_status (cr) != CAIRO_STATUS_SUCCESS) + { + cairo_surface_destroy (copy); + copy = NULL; + } + + cairo_destroy(cr); + + return copy; +} +#endif + /** * mate_bg_crossfade_set_start_surface: * @fade: a #MateBGCrossfade @@ -319,22 +360,26 @@ gboolean #if GTK_CHECK_VERSION(3, 0, 0) mate_bg_crossfade_set_start_surface (MateBGCrossfade* fade, cairo_surface_t *surface) #else -mate_bg_crossfade_set_start_pixmap (MateBGCrossfade* fade, GdkPixmap *surface) +mate_bg_crossfade_set_start_pixmap (MateBGCrossfade* fade, GdkPixmap *pixmap) #endif { g_return_val_if_fail (MATE_IS_BG_CROSSFADE (fade), FALSE); - if (fade->priv->fading_surface != NULL) + if (fade->priv->start_surface != NULL) { - cairo_surface_destroy (fade->priv->fading_surface); - fade->priv->fading_surface = NULL; + cairo_surface_destroy (fade->priv->start_surface); + fade->priv->start_surface = NULL; } - fade->priv->fading_surface = tile_surface (surface, - fade->priv->width, - fade->priv->height); +#if GTK_CHECK_VERSION(3, 0, 0) + fade->priv->start_surface = tile_surface (surface, +#else + fade->priv->start_surface = tile_pixmap (pixmap, +#endif + fade->priv->width, + fade->priv->height); - return fade->priv->fading_surface != NULL; + return fade->priv->start_surface != NULL; } static gdouble @@ -368,7 +413,7 @@ gboolean #if GTK_CHECK_VERSION(3, 0, 0) mate_bg_crossfade_set_end_surface (MateBGCrossfade* fade, cairo_surface_t *surface) #else -mate_bg_crossfade_set_end_pixmap (MateBGCrossfade* fade, GdkPixmap *surface) +mate_bg_crossfade_set_end_pixmap (MateBGCrossfade* fade, GdkPixmap *pixmap) #endif { g_return_val_if_fail (MATE_IS_BG_CROSSFADE (fade), FALSE); @@ -378,9 +423,13 @@ mate_bg_crossfade_set_end_pixmap (MateBGCrossfade* fade, GdkPixmap *surface) fade->priv->end_surface = NULL; } +#if GTK_CHECK_VERSION(3, 0, 0) fade->priv->end_surface = tile_surface (surface, - fade->priv->width, - fade->priv->height); +#else + fade->priv->end_surface = tile_pixmap (pixmap, +#endif + fade->priv->width, + fade->priv->height); /* Reset timer in case we're called while animating */ @@ -423,22 +472,98 @@ send_root_property_change_notification (MateBGCrossfade *fade) static void draw_background (MateBGCrossfade *fade) { - if (gdk_window_get_window_type (fade->priv->window) == GDK_WINDOW_ROOT) { - XClearArea (GDK_WINDOW_XDISPLAY (fade->priv->window), - GDK_WINDOW_XID (fade->priv->window), - 0, 0, - gdk_window_get_width (fade->priv->window), - gdk_window_get_height (fade->priv->window), - False); - send_root_property_change_notification (fade); - gdk_flush (); - } else { + if (fade->priv->widget != NULL) { + gtk_widget_queue_draw (fade->priv->widget); + } else if (gdk_window_get_window_type (fade->priv->window) != GDK_WINDOW_ROOT) { +#if GTK_CHECK_VERSION (3, 22, 0) + cairo_t *cr; + cairo_region_t *region; + GdkDrawingContext *draw_context; + + region = gdk_window_get_visible_region (fade->priv->window); + draw_context = gdk_window_begin_draw_frame (fade->priv->window, + region); + cr = gdk_drawing_context_get_cairo_context (draw_context); + cairo_set_operator (cr, CAIRO_OPERATOR_OVER); + cairo_set_source_surface (cr, fade->priv->fading_surface, 0, 0); + cairo_paint (cr); + gdk_window_end_draw_frame (fade->priv->window, draw_context); + cairo_region_destroy (region); +#elif GTK_CHECK_VERSION (3, 0, 0) + cairo_pattern_t *pattern; + + pattern = + cairo_pattern_create_for_surface (fade->priv->fading_surface); + gdk_window_set_background_pattern (fade->priv->window, pattern); + cairo_pattern_destroy (pattern); + gdk_window_invalidate_rect (fade->priv->window, NULL, FALSE); + gdk_window_process_updates (fade->priv->window, FALSE); +#else + cairo_t *cr; + GdkPixmap *pixmap; + + pixmap = gdk_pixmap_new (fade->priv->window, + fade->priv->width, fade->priv->height, + -1); + cr = gdk_cairo_create (pixmap); + cairo_set_operator (cr, CAIRO_OPERATOR_OVER); + cairo_set_source_surface (cr, fade->priv->fading_surface, 0, 0); + cairo_paint (cr); + cairo_destroy (cr); + gdk_window_set_back_pixmap (fade->priv->window, pixmap, FALSE); + g_object_unref (pixmap); gdk_window_invalidate_rect (fade->priv->window, NULL, FALSE); gdk_window_process_updates (fade->priv->window, FALSE); +#endif + } else { + Display *xdisplay = GDK_WINDOW_XDISPLAY (fade->priv->window); + gdk_error_trap_push (); + XGrabServer (xdisplay); + XClearWindow (xdisplay, GDK_WINDOW_XID (fade->priv->window)); + send_root_property_change_notification (fade); + XFlush (xdisplay); + XUngrabServer (xdisplay); +#if GTK_CHECK_VERSION (3, 0, 0) + gdk_error_trap_pop_ignored (); +#else + gdk_error_trap_pop (); +#endif } } static gboolean +on_widget_draw (GtkWidget *widget, +#if GTK_CHECK_VERSION (3, 0, 0) + cairo_t *cr, +#else + GdkEventExpose *event, +#endif + MateBGCrossfade *fade) +{ +#if !GTK_CHECK_VERSION (3, 0, 0) + cairo_t *cr; + +#endif + g_assert (fade->priv->fading_surface != NULL); + +#if !GTK_CHECK_VERSION (3, 0, 0) + cr = gdk_cairo_create (event->window); + + gdk_cairo_rectangle (cr, &event->area); + cairo_clip (cr); + +#endif + cairo_set_source_surface (cr, fade->priv->fading_surface, 0, 0); + cairo_pattern_set_extend (cairo_get_source (cr), CAIRO_EXTEND_REPEAT); + cairo_paint (cr); + +#if !GTK_CHECK_VERSION (3, 0, 0) + cairo_destroy (cr); +#endif + return FALSE; +} + +static gboolean on_tick (MateBGCrossfade *fade) { gdouble now, percent_done; @@ -462,7 +587,8 @@ on_tick (MateBGCrossfade *fade) return on_tick (fade); } - if (fade->priv->fading_surface == NULL) { + if (fade->priv->fading_surface == NULL || + fade->priv->end_surface == NULL) { return FALSE; } @@ -496,60 +622,175 @@ on_tick (MateBGCrossfade *fade) static void on_finished (MateBGCrossfade *fade) { + cairo_t *cr; + if (fade->priv->timeout_id == 0) return; + g_assert (fade->priv->fading_surface != NULL); g_assert (fade->priv->end_surface != NULL); -#if GTK_CHECK_VERSION (3, 0, 0) - cairo_pattern_t *pattern; - pattern = cairo_pattern_create_for_surface (fade->priv->end_surface); - gdk_window_set_background_pattern (fade->priv->window, pattern); - cairo_pattern_destroy (pattern); -#else - gdk_window_set_back_pixmap (fade->priv->window, - fade->priv->end_surface, - FALSE); -#endif + cr = cairo_create (fade->priv->fading_surface); + cairo_set_source_surface (cr, fade->priv->end_surface, 0, 0); + cairo_paint (cr); + cairo_destroy (cr); draw_background (fade); + cairo_surface_destroy (fade->priv->fading_surface); + fade->priv->fading_surface = NULL; + cairo_surface_destroy (fade->priv->end_surface); fade->priv->end_surface = NULL; - g_assert (fade->priv->fading_surface != NULL); + g_assert (fade->priv->start_surface != NULL); - cairo_surface_destroy (fade->priv->fading_surface); - fade->priv->fading_surface = NULL; + cairo_surface_destroy (fade->priv->start_surface); + fade->priv->start_surface = NULL; + + if (fade->priv->widget != NULL) { + g_signal_handlers_disconnect_by_func (fade->priv->widget, + (GCallback) on_widget_draw, + fade); + } + fade->priv->widget = NULL; fade->priv->timeout_id = 0; g_signal_emit (fade, signals[FINISHED], 0, fade->priv->window); } +/* This function queries the _XROOTPMAP_ID property from the root window + * to determine the current root window background pixmap and returns a + * surface to draw directly to it. + * If _XROOTPMAP_ID is not set, then NULL returned. + */ +static cairo_surface_t * +get_root_pixmap_id_surface (GdkDisplay *display) +{ + GdkScreen *screen; + Display *xdisplay; + Visual *xvisual; + Window xroot; + Atom type; + int format, result; + unsigned long nitems, bytes_after; + unsigned char *data; + cairo_surface_t *surface = NULL; + + g_return_val_if_fail (display != NULL, NULL); + + screen = gdk_display_get_default_screen (display); + xdisplay = GDK_DISPLAY_XDISPLAY (display); + xvisual = GDK_VISUAL_XVISUAL (gdk_screen_get_system_visual (screen)); + xroot = RootWindow (xdisplay, GDK_SCREEN_XNUMBER (screen)); + + result = XGetWindowProperty (xdisplay, xroot, + gdk_x11_get_xatom_by_name ("_XROOTPMAP_ID"), + 0L, 1L, False, XA_PIXMAP, + &type, &format, &nitems, &bytes_after, + &data); + + if (result != Success || type != XA_PIXMAP || + format != 32 || nitems != 1) { + XFree (data); + data = NULL; + } + + if (data != NULL) { + Pixmap pixmap = *(Pixmap *) data; + Window root_ret; + int x_ret, y_ret; + unsigned int w_ret, h_ret, bw_ret, depth_ret; + + gdk_error_trap_push (); + if (XGetGeometry (xdisplay, pixmap, &root_ret, + &x_ret, &y_ret, &w_ret, &h_ret, + &bw_ret, &depth_ret)) + { + surface = cairo_xlib_surface_create (xdisplay, + pixmap, xvisual, + w_ret, h_ret); + } + +#if GTK_CHECK_VERSION (3, 0, 0) + gdk_error_trap_pop_ignored (); +#else + gdk_error_trap_pop (); +#endif + XFree (data); + } + + gdk_display_flush (display); + return surface; +} + /** * mate_bg_crossfade_start: * @fade: a #MateBGCrossfade * @window: The #GdkWindow to draw crossfade on * * This function initiates a quick crossfade between two surfaces on - * the background of @window. Before initiating the crossfade both - * mate_bg_crossfade_start() and mate_bg_crossfade_end() need to - * be called. If animations are disabled, the crossfade is skipped, - * and the window background is set immediately to the end surface. + * the background of @window. Before initiating the crossfade both + * mate_bg_crossfade_set_start_surface() and + * mate_bg_crossfade_set_end_surface() need to be called. If animations + * are disabled, the crossfade is skipped, and the window background is + * set immediately to the end surface. **/ void mate_bg_crossfade_start (MateBGCrossfade *fade, - GdkWindow *window) + GdkWindow *window) { GSource *source; GMainContext *context; g_return_if_fail (MATE_IS_BG_CROSSFADE (fade)); g_return_if_fail (window != NULL); - g_return_if_fail (fade->priv->fading_surface != NULL); + g_return_if_fail (fade->priv->start_surface != NULL); g_return_if_fail (fade->priv->end_surface != NULL); g_return_if_fail (!mate_bg_crossfade_is_started (fade)); g_return_if_fail (gdk_window_get_window_type (window) != GDK_WINDOW_FOREIGN); + /* If drawing is done on the root window, + * it is essential to have the root pixmap. + */ + if (gdk_window_get_window_type (window) == GDK_WINDOW_ROOT) { + GdkDisplay *display = gdk_window_get_display (window); + cairo_surface_t *surface = get_root_pixmap_id_surface (display); + + g_return_if_fail (surface != NULL); + cairo_surface_destroy (surface); + } + + if (fade->priv->fading_surface != NULL) { + cairo_surface_destroy (fade->priv->fading_surface); + fade->priv->fading_surface = NULL; + } + + fade->priv->window = window; + if (gdk_window_get_window_type (fade->priv->window) != GDK_WINDOW_ROOT) { + fade->priv->fading_surface = tile_surface (fade->priv->start_surface, + fade->priv->width, + fade->priv->height); + if (fade->priv->widget != NULL) { +#if GTK_CHECK_VERSION (3, 0, 0) + g_signal_connect (fade->priv->widget, "draw", + (GCallback) on_widget_draw, fade); +#else + g_signal_connect (fade->priv->widget, "expose-event", + (GCallback) on_widget_draw, fade); +#endif + } + } else { + cairo_t *cr; + GdkDisplay *display = gdk_window_get_display (fade->priv->window); + + fade->priv->fading_surface = get_root_pixmap_id_surface (display); + cr = cairo_create (fade->priv->fading_surface); + cairo_set_source_surface (cr, fade->priv->start_surface, 0, 0); + cairo_paint (cr); + cairo_destroy (cr); + } + draw_background (fade); + source = g_timeout_source_new (1000 / 60.0); g_source_set_callback (source, (GSourceFunc) on_tick, @@ -559,24 +800,38 @@ mate_bg_crossfade_start (MateBGCrossfade *fade, fade->priv->timeout_id = g_source_attach (source, context); g_source_unref (source); - fade->priv->window = window; -#if GTK_CHECK_VERSION (3, 0, 0) - cairo_pattern_t *pattern; - pattern = cairo_pattern_create_for_surface (fade->priv->fading_surface); - gdk_window_set_background_pattern (fade->priv->window, pattern); - cairo_pattern_destroy (pattern); -#else - gdk_window_set_back_pixmap (fade->priv->window, - fade->priv->fading_surface, - FALSE); -#endif - draw_background (fade); - fade->priv->is_first_frame = TRUE; fade->priv->total_duration = .75; fade->priv->start_time = get_current_time (); } +/** + * mate_bg_crossfade_start_widget: + * @fade: a #MateBGCrossfade + * @widget: The #GtkWidget to draw crossfade on + * + * This function initiates a quick crossfade between two surfaces on + * the background of @widget. Before initiating the crossfade both + * mate_bg_crossfade_set_start_surface() and + * mate_bg_crossfade_set_end_surface() need to be called. If animations + * are disabled, the crossfade is skipped, and the window background is + * set immediately to the end surface. + **/ +void +mate_bg_crossfade_start_widget (MateBGCrossfade *fade, + GtkWidget *widget) +{ + GdkWindow *window; + + g_return_if_fail (MATE_IS_BG_CROSSFADE (fade)); + g_return_if_fail (widget != NULL); + + fade->priv->widget = widget; + gtk_widget_realize (fade->priv->widget); + window = gtk_widget_get_window (fade->priv->widget); + + mate_bg_crossfade_start (fade, window); +} /** * mate_bg_crossfade_is_started: |