static gboolean
draw_cb (ClutterCairoTexture *canvas,
cairo_t *cr)
{
EmpathyRoundedRectangle *self = EMPATHY_ROUNDED_RECTANGLE (canvas);
guint width, height;
guint border_width;
gdouble tmp_alpha;
gdouble radius;
width = self->priv->width;
height = self->priv->height;
radius = self->priv->height / self->priv->round_factor;
border_width = self->priv->border_width;
/* compute the composited opacity of the actor taking into
* account the opacity of the color set by the user */
tmp_alpha = (clutter_actor_get_paint_opacity (CLUTTER_ACTOR (self))
* self->priv->border_color.alpha) / 255.;
cairo_set_source_rgba (cr,
self->priv->border_color.red / 255.,
self->priv->border_color.green / 255.,
self->priv->border_color.blue / 255.,
tmp_alpha);
cairo_set_line_width (cr, border_width);
cairo_set_operator (cr, CAIRO_OPERATOR_CLEAR);
cairo_paint (cr);
cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
/* make room for the portion of the border drawn on the outside */
cairo_translate (cr, border_width/2.0, border_width/2.0);
cairo_new_sub_path (cr);
cairo_arc (cr, width - radius, radius, radius,
-M_PI/2.0, 0);
cairo_arc (cr, width - radius, height - radius, radius,
0, M_PI/2.0);
cairo_arc (cr, radius, height - radius, radius,
M_PI/2.0, M_PI);
cairo_arc (cr, radius, radius, radius,
M_PI, -M_PI/2.0);
cairo_close_path (cr);
cairo_stroke (cr);
return TRUE;
}
ClutterActor *
empathy_rounded_rectangle_new (guint width,
guint height)
{
ClutterActor *self;
self = CLUTTER_ACTOR (g_object_new (EMPATHY_TYPE_ROUNDED_RECTANGLE, NULL));
clutter_cairo_texture_set_surface_size (CLUTTER_CAIRO_TEXTURE (self),
width, height);
empathy_rounded_rectangle_paint (EMPATHY_ROUNDED_RECTANGLE (self));
return self;
}
EmpathyRoundedRectangle *
empathy_rounded_rectangle_new (guint width,
guint height,
guint round_factor)
{
EmpathyRoundedRectangle *self;
self = EMPATHY_ROUNDED_RECTANGLE (g_object_new (EMPATHY_TYPE_ROUNDED_RECTANGLE, NULL));
self->priv->width = width;
self->priv->height = height;
self->priv->round_factor = round_factor;
g_signal_connect (self, "draw", G_CALLBACK (draw_cb), NULL);
empathy_rounded_rectangle_update_surface_size (self);
clutter_cairo_texture_invalidate (CLUTTER_CAIRO_TEXTURE (self));
return self;
}