2 Copyright (C) 2011-2013 Paul Davis
3 Author: Carl Hetherington <cth@carlh.net>
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 #include <cairomm/context.h>
22 #include "pbd/stacktrace.h"
23 #include "pbd/compose.h"
25 #include "canvas/canvas.h"
26 #include "canvas/rectangle.h"
27 #include "canvas/debug.h"
28 #include "canvas/utils.h"
31 using namespace ArdourCanvas;
33 Rectangle::Rectangle (Group* parent)
37 , _outline_what ((What) (LEFT | RIGHT | TOP | BOTTOM))
42 Rectangle::Rectangle (Group* parent, Rect const & rect)
47 , _outline_what ((What) (LEFT | RIGHT | TOP | BOTTOM))
53 Rectangle::render (Rect const & area, Cairo::RefPtr<Cairo::Context> context) const
55 Rect self = item_to_window (_rect);
56 boost::optional<Rect> d = self.intersection (area);
63 static const double boundary = 0.5;
64 const double x_limit = _canvas->visible_area().width();
66 draw.x0 = max (self.x0, max (0.0, draw.x0 - boundary));
67 draw.x1 = min (self.x1, min (x_limit, draw.x1 + boundary));
69 draw.y0 = max (self.y0, max (0.0, draw.y0 - boundary));
70 draw.y1 = min (self.y1, min (x_limit, draw.y1 + boundary));
72 Rect fill_rect = draw;
73 Rect stroke_rect = fill_rect.expand (0.5);
77 setup_fill_context (context);
79 setup_gradient_context (context, self, Duple (draw.x0, draw.y0));
81 context->rectangle (fill_rect.x0, fill_rect.y0, fill_rect.width(), fill_rect.height());
87 setup_outline_context (context);
89 if (_outline_what & LEFT) {
90 context->move_to (stroke_rect.x0, stroke_rect.y0);
91 context->line_to (stroke_rect.x0, stroke_rect.y1);
94 if (_outline_what & BOTTOM) {
95 context->move_to (stroke_rect.x0, stroke_rect.y1);
96 context->line_to (stroke_rect.x1, stroke_rect.y1);
99 if (_outline_what & RIGHT) {
100 context->move_to (stroke_rect.x1, stroke_rect.y0);
101 context->line_to (stroke_rect.x1, stroke_rect.y1);
104 if (_outline_what & TOP) {
105 context->move_to (stroke_rect.x0, stroke_rect.y0);
106 context->line_to (stroke_rect.x1, stroke_rect.y0);
114 Rectangle::compute_bounding_box () const
116 Rect r = _rect.fix ();
117 _bounding_box = boost::optional<Rect> (r.expand (_outline_width));
118 _bounding_box_dirty = false;
122 Rectangle::set (Rect const & r)
124 /* We don't update the bounding box here; it's just
125 as cheap to do it when asked.
132 _bounding_box_dirty = true;
135 DEBUG_TRACE (PBD::DEBUG::CanvasItemsDirtied, "canvas item dirty: rectangle change (set)\n");
139 Rectangle::set_x0 (Coord x0)
145 _bounding_box_dirty = true;
148 DEBUG_TRACE (PBD::DEBUG::CanvasItemsDirtied, "canvas item dirty: rectangle change (x0)\n");
152 Rectangle::set_y0 (Coord y0)
158 _bounding_box_dirty = true;
161 DEBUG_TRACE (PBD::DEBUG::CanvasItemsDirtied, "canvas item dirty: rectangle change (y0)\n");
165 Rectangle::set_x1 (Coord x1)
171 _bounding_box_dirty = true;
174 DEBUG_TRACE (PBD::DEBUG::CanvasItemsDirtied, "canvas item dirty: rectangle change (x1)\n");
178 Rectangle::set_y1 (Coord y1)
184 _bounding_box_dirty = true;
187 DEBUG_TRACE (PBD::DEBUG::CanvasItemsDirtied, "canvas item dirty: rectangle change (y1)\n");
191 Rectangle::set_outline_what (What what)
195 _outline_what = what;
201 Rectangle::set_outline_what (int what)
203 set_outline_what ((What) what);