2 * empathy-rounded-rectangle.c - Source for EmpathyRoundedRectangle
3 * Copyright (C) 2011 Collabora Ltd.
4 * @author Emilio Pozuelo Monfort <emilio.pozuelo@collabora.co.uk>
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
25 #include "empathy-rounded-rectangle.h"
27 G_DEFINE_TYPE (EmpathyRoundedRectangle,
28 empathy_rounded_rectangle,
29 CLUTTER_TYPE_CAIRO_TEXTURE)
31 struct _EmpathyRoundedRectanglePriv
34 ClutterColor border_color;
40 draw_cb (ClutterCairoTexture *canvas,
43 EmpathyRoundedRectangle *self = EMPATHY_ROUNDED_RECTANGLE (canvas);
49 width = self->priv->width;
50 height = self->priv->height;
51 radius = self->priv->height / self->priv->round_factor;
52 border_width = self->priv->border_width;
54 /* compute the composited opacity of the actor taking into
55 * account the opacity of the color set by the user */
56 tmp_alpha = (clutter_actor_get_paint_opacity (CLUTTER_ACTOR (self))
57 * self->priv->border_color.alpha) / 255.;
59 cairo_set_source_rgba (cr,
60 self->priv->border_color.red / 255.,
61 self->priv->border_color.green / 255.,
62 self->priv->border_color.blue / 255.,
65 cairo_set_line_width (cr, border_width);
67 cairo_set_operator (cr, CAIRO_OPERATOR_CLEAR);
69 cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
71 /* make room for the portion of the border drawn on the outside */
72 cairo_translate (cr, border_width/2.0, border_width/2.0);
74 cairo_new_sub_path (cr);
75 cairo_arc (cr, width - radius, radius, radius,
77 cairo_arc (cr, width - radius, height - radius, radius,
79 cairo_arc (cr, radius, height - radius, radius,
81 cairo_arc (cr, radius, radius, radius,
83 cairo_close_path (cr);
91 empathy_rounded_rectangle_init (EmpathyRoundedRectangle *self)
93 self->priv = G_TYPE_INSTANCE_GET_PRIVATE (self,
94 EMPATHY_TYPE_ROUNDED_RECTANGLE, EmpathyRoundedRectanglePriv);
96 self->priv->border_width = 1;
97 self->priv->round_factor = 2;
101 empathy_rounded_rectangle_finalize (GObject *object)
103 G_OBJECT_CLASS (empathy_rounded_rectangle_parent_class)->finalize (object);
107 empathy_rounded_rectangle_class_init (EmpathyRoundedRectangleClass *klass)
109 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
111 gobject_class->finalize = empathy_rounded_rectangle_finalize;
113 g_type_class_add_private (klass, sizeof (EmpathyRoundedRectanglePriv));
117 empathy_rounded_rectangle_update_surface_size (EmpathyRoundedRectangle *self)
119 clutter_cairo_texture_set_surface_size (CLUTTER_CAIRO_TEXTURE (self),
120 self->priv->width + self->priv->border_width,
121 self->priv->height + self->priv->border_width);
124 EmpathyRoundedRectangle *
125 empathy_rounded_rectangle_new (guint width,
129 EmpathyRoundedRectangle *self;
131 self = EMPATHY_ROUNDED_RECTANGLE (g_object_new (EMPATHY_TYPE_ROUNDED_RECTANGLE, NULL));
133 self->priv->width = width;
134 self->priv->height = height;
135 self->priv->round_factor = round_factor;
137 g_signal_connect (self, "draw", G_CALLBACK (draw_cb), NULL);
139 empathy_rounded_rectangle_update_surface_size (self);
140 clutter_cairo_texture_invalidate (CLUTTER_CAIRO_TEXTURE (self));
146 empathy_rounded_rectangle_set_border_width (EmpathyRoundedRectangle *self,
149 self->priv->border_width = border_width;
151 empathy_rounded_rectangle_update_surface_size (self);
152 clutter_cairo_texture_invalidate (CLUTTER_CAIRO_TEXTURE (self));
156 empathy_rounded_rectangle_set_border_color (EmpathyRoundedRectangle *self,
157 const ClutterColor *color)
159 self->priv->border_color = *color;
161 clutter_cairo_texture_invalidate (CLUTTER_CAIRO_TEXTURE (self));