static gboolean
um_strength_bar_expose (GtkWidget *widget,
GdkEventExpose *event)
{
UmStrengthBar *bar = UM_STRENGTH_BAR (widget);
gdouble r, g, b;
if (GTK_WIDGET_DRAWABLE (widget)) {
cairo_t *cr;
cr = gdk_cairo_create (widget->window);
cairo_set_line_width (cr, 1);
cairo_rectangle (cr,
widget->allocation.x,
widget->allocation.y,
bar->priv->strength * widget->allocation.width,
widget->allocation.height);
cairo_clip (cr);
curved_rectangle (cr,
widget->allocation.x + 0.5,
widget->allocation.y + 0.5,
widget->allocation.width - 1,
widget->allocation.height - 1,
4);
get_color (bar->priv->strength, &r, &g ,&b);
cairo_set_source_rgb (cr, r, g, b);
cairo_fill_preserve (cr);
cairo_reset_clip (cr);
cairo_set_source_rgb (cr, 0, 0, 0);
cairo_stroke (cr);
cairo_destroy (cr);
}
return FALSE;
}
static gboolean
on_expose_event (GtkWidget *widget,
GdkEventExpose *event,
GsdMediaKeysWindow *window)
{
cairo_t *context;
cairo_t *cr;
cairo_surface_t *surface;
int width;
int height;
GdkColor color;
double r, g, b;
context = gdk_cairo_create (GTK_WIDGET (window)->window);
cairo_set_operator (context, CAIRO_OPERATOR_SOURCE);
gtk_window_get_size (GTK_WINDOW (widget), &width, &height);
surface = cairo_surface_create_similar (cairo_get_target (context),
CAIRO_CONTENT_COLOR_ALPHA,
width,
height);
if (cairo_surface_status (surface) != CAIRO_STATUS_SUCCESS) {
goto done;
}
cr = cairo_create (surface);
if (cairo_status (cr) != CAIRO_STATUS_SUCCESS) {
goto done;
}
cairo_set_source_rgba (cr, 1.0, 1.0, 1.0, 0.0);
cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
cairo_paint (cr);
/* draw a box */
curved_rectangle (cr, 0, 0, width, height, height / 10);
color = GTK_WIDGET (window)->style->bg [GTK_STATE_NORMAL];
r = (float)color.red / 65535.0;
g = (float)color.green / 65535.0;
b = (float)color.blue / 65535.0;
cairo_set_source_rgba (cr, r, g, b, BG_ALPHA);
cairo_fill_preserve (cr);
color = GTK_WIDGET (window)->style->fg [GTK_STATE_NORMAL];
r = (float)color.red / 65535.0;
g = (float)color.green / 65535.0;
b = (float)color.blue / 65535.0;
cairo_set_source_rgba (cr, r, g, b, BG_ALPHA);
cairo_set_line_width (cr, 1);
cairo_stroke (cr);
/* draw action */
draw_action (window, cr);
cairo_destroy (cr);
/* Make sure we have a transparent background */
cairo_rectangle (context, 0, 0, width, height);
cairo_set_source_rgba (context, 0.0, 0.0, 0.0, 0.0);
cairo_fill (context);
cairo_set_source_surface (context, surface, 0, 0);
cairo_paint_with_alpha (context, window->priv->fade_out_alpha);
done:
if (surface != NULL) {
cairo_surface_destroy (surface);
}
cairo_destroy (context);
return FALSE;
}
