void
cheese_flash_fire (CheeseFlash *flash)
{
CheeseFlashPrivate *flash_priv = CHEESE_FLASH_GET_PRIVATE (flash);
GtkWidget *parent;
GdkScreen *screen;
GdkRectangle rect;
int monitor;
g_return_if_fail (flash_priv->parent != NULL);
GtkWindow *flash_window = flash_priv->window;
if (flash_priv->flash_timeout_tag > 0)
g_source_remove (flash_priv->flash_timeout_tag);
if (flash_priv->fade_timeout_tag > 0)
g_source_remove (flash_priv->fade_timeout_tag);
parent = gtk_widget_get_toplevel (flash_priv->parent);
screen = gtk_widget_get_screen (parent);
monitor = gdk_screen_get_monitor_at_window (screen,
gtk_widget_get_window (parent));
gdk_screen_get_monitor_geometry (screen, monitor, &rect);
gtk_window_set_transient_for (GTK_WINDOW (flash_window), GTK_WINDOW (parent));
gtk_window_resize (flash_window, rect.width, rect.height);
gtk_window_move (flash_window, rect.x, rect.y);
gtk_window_set_opacity (flash_window, 1);
gtk_widget_show_all (GTK_WIDGET (flash_window));
flash_priv->flash_timeout_tag = g_timeout_add (FLASH_DURATION, cheese_flash_start_fade, (gpointer) flash);
}
static void
cheese_flash_init (CheeseFlash *self)
{
CheeseFlashPrivate *priv = CHEESE_FLASH_GET_PRIVATE (self);
GtkWindow *window;
priv->flash_timeout_tag = 0;
priv->fade_timeout_tag = 0;
window = GTK_WINDOW (gtk_window_new (GTK_WINDOW_POPUP));
/* make it so it doesn't look like a window on the desktop (+fullscreen) */
gtk_window_set_decorated (window, FALSE);
gtk_window_set_skip_taskbar_hint (window, TRUE);
gtk_window_set_skip_pager_hint (window, TRUE);
gtk_window_set_keep_above (window, TRUE);
/* Don't take focus */
gtk_window_set_accept_focus (window, FALSE);
gtk_window_set_focus_on_map (window, FALSE);
/* Don't consume input */
gtk_widget_realize (GTK_WIDGET (window));
GdkRegion *input_region;
input_region = gdk_region_new ();
gdk_window_input_shape_combine_region (gtk_widget_get_window (GTK_WIDGET (window)), input_region, 0, 0);
gdk_region_destroy (input_region);
g_signal_connect (G_OBJECT (window), "expose-event", G_CALLBACK (cheese_flash_window_expose_event_cb), NULL);
priv->window = window;
}
static void
cheese_flash_init (CheeseFlash *self)
{
CheeseFlashPrivate *priv = self->priv = CHEESE_FLASH_GET_PRIVATE (self);
cairo_region_t *input_region;
GtkWindow *window = GTK_WINDOW (self);
const GdkRGBA white = { 1.0, 1.0, 1.0, 1.0 };
priv->flash_timeout_tag = 0;
priv->fade_timeout_tag = 0;
/* make it so it doesn't look like a window on the desktop (+fullscreen) */
gtk_window_set_decorated (window, FALSE);
gtk_window_set_skip_taskbar_hint (window, TRUE);
gtk_window_set_skip_pager_hint (window, TRUE);
gtk_window_set_keep_above (window, TRUE);
/* Don't take focus */
gtk_window_set_accept_focus (window, FALSE);
gtk_window_set_focus_on_map (window, FALSE);
/* Make it white */
gtk_widget_override_background_color (GTK_WIDGET (window), GTK_STATE_NORMAL,
&white);
/* Don't consume input */
gtk_widget_realize (GTK_WIDGET (window));
input_region = cairo_region_create ();
gdk_window_input_shape_combine_region (gtk_widget_get_window (GTK_WIDGET (window)), input_region, 0, 0);
cairo_region_destroy (input_region);
}
static void
cheese_flash_dispose (GObject *object)
{
CheeseFlashPrivate *priv = CHEESE_FLASH_GET_PRIVATE (object);
if (priv->window != NULL)
{
gtk_widget_destroy (GTK_WIDGET (priv->window));
priv->window = NULL;
}
if (G_OBJECT_CLASS (cheese_flash_parent_class)->dispose)
G_OBJECT_CLASS (cheese_flash_parent_class)->dispose (object);
}
static gboolean
cheese_flash_start_fade (gpointer data)
{
CheeseFlashPrivate *flash_priv = CHEESE_FLASH_GET_PRIVATE (CHEESE_FLASH (data));
GtkWindow *flash_window = flash_priv->window;
/* If the screen is non-composited, just hide and finish up */
if (!gdk_screen_is_composited (gtk_window_get_screen (flash_window)))
{
gtk_widget_hide (GTK_WIDGET (flash_window));
return FALSE;
}
flash_priv->fade_timeout_tag = g_timeout_add (1000.0 / FLASH_ANIMATION_RATE, cheese_flash_opacity_fade, data);
return FALSE;
}
static gboolean
cheese_flash_opacity_fade (gpointer data)
{
CheeseFlash *flash = data;
CheeseFlashPrivate *flash_priv = CHEESE_FLASH_GET_PRIVATE (flash);
GtkWindow *flash_window = flash_priv->window;
double opacity = gtk_window_get_opacity (flash_window);
/* exponentially decrease */
gtk_window_set_opacity (flash_window, opacity * FLASH_FADE_FACTOR);
if (opacity <= FLASH_LOW_THRESHOLD)
{
/* the flasher has finished when we reach the quit value */
gtk_widget_hide (GTK_WIDGET (flash_window));
return FALSE;
}
return TRUE;
}
static gboolean
cheese_flash_start_fade (gpointer data)
{
CheeseFlash *self = data;
CheeseFlashPrivate *flash_priv = CHEESE_FLASH_GET_PRIVATE (self);
GtkWindow *flash_window = flash_priv->window;
/* If the screen is non-composited, just hide and finish up */
if (!gdk_screen_is_composited (gtk_window_get_screen (flash_window)))
{
gtk_widget_hide (GTK_WIDGET (flash_window));
return FALSE;
}
flash_priv->fade_timeout_tag =
g_timeout_add_full (G_PRIORITY_DEFAULT,
1000.0 / FLASH_ANIMATION_RATE,
cheese_flash_opacity_fade,
g_object_ref (self), g_object_unref);
return FALSE;
}
void
cheese_flash_fire (CheeseFlash *flash,
GdkRectangle *rect)
{
CheeseFlashPrivate *flash_priv = CHEESE_FLASH_GET_PRIVATE (flash);
GtkWindow *flash_window = flash_priv->window;
if (flash_priv->flash_timeout_tag > 0)
g_source_remove (flash_priv->flash_timeout_tag);
if (flash_priv->fade_timeout_tag > 0)
g_source_remove (flash_priv->fade_timeout_tag);
gtk_window_resize (flash_window, rect->width, rect->height);
gtk_window_move (flash_window, rect->x, rect->y);
gtk_widget_set_opacity (GTK_WIDGET (flash_window), 0.99);
gtk_widget_show_all (GTK_WIDGET (flash_window));
flash_priv->flash_timeout_tag =
g_timeout_add_full (G_PRIORITY_DEFAULT,
FLASH_DURATION,
cheese_flash_start_fade,
g_object_ref (flash), g_object_unref);
}
static void
cheese_flash_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
CheeseFlashPrivate *priv = CHEESE_FLASH_GET_PRIVATE (object);
switch (prop_id)
{
case PROP_PARENT: {
GObject *object;
object = g_value_get_object (value);
if (object != NULL)
priv->parent = g_object_ref (object);
else
priv->parent = NULL;
}
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
