2013-04-15 22:10:18 -04:00
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/*
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Copyright (C) 2011-2013 Paul Davis
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Author: Carl Hetherington <cth@carlh.net>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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2013-04-04 00:32:52 -04:00
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#include <iostream>
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#include <cairomm/context.h>
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#include "pbd/stacktrace.h"
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#include "pbd/compose.h"
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2013-04-17 10:53:17 -04:00
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#include "canvas/canvas.h"
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2013-04-04 00:32:52 -04:00
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#include "canvas/rectangle.h"
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#include "canvas/debug.h"
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#include "canvas/utils.h"
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using namespace std;
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using namespace ArdourCanvas;
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Rectangle::Rectangle (Group* parent)
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: Item (parent)
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, Outline (parent)
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, Fill (parent)
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, _outline_what ((What) (LEFT | RIGHT | TOP | BOTTOM))
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{
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}
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Rectangle::Rectangle (Group* parent, Rect const & rect)
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: Item (parent)
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, Outline (parent)
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, Fill (parent)
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, _rect (rect)
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, _outline_what ((What) (LEFT | RIGHT | TOP | BOTTOM))
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{
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}
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void
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Rectangle::render (Rect const & area, Cairo::RefPtr<Cairo::Context> context) const
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{
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Rect self = item_to_window (_rect);
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boost::optional<Rect> r = self.intersection (area);
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2013-10-31 11:49:36 -04:00
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if (!r) {
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std::cerr << whatami() << '/' << name << " not covered by render area! ... " << self << " vs. " << area << std::endl;
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return;
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}
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2013-10-31 11:49:36 -04:00
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Rect draw = r.get ();
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2013-06-18 13:46:24 -04:00
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if (_fill) {
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if (_stops.empty()) {
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setup_fill_context (context);
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} else {
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setup_gradient_context (context, self, Duple (draw.x0, draw.y0));
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}
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context->rectangle (draw.x0, draw.y0, draw.width(), draw.height());
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context->fill ();
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}
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if (_outline) {
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2013-05-02 18:21:35 -04:00
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setup_outline_context (context);
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2014-01-07 20:56:36 -05:00
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if (_outline_what == What (LEFT|RIGHT|BOTTOM|TOP)) {
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context->rectangle (self.x0 + 0.5, self.y0 + 0.5, self.width(), self.height());
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2014-01-07 20:56:36 -05:00
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} else {
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context->set_line_cap (Cairo::LINE_CAP_SQUARE);
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/* see the cairo FAQ on single pixel lines to see why we do
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* this expansion of the perimeter.
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*/
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if (_outline_what & LEFT) {
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/* vertical line: move x-coordinate by 0.5 pixels */
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context->move_to (self.x0 + 0.5, self.y0);
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context->line_to (self.x0 + 0.5, self.y1);
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}
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if (_outline_what & BOTTOM) {
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/* horizontal line: move y-coordinate by 0.5 pixels */
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context->move_to (self.x0, self.y1 - 0.5);
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context->line_to (self.x1, self.y1 - 0.5);
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}
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if (_outline_what & RIGHT) {
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/* vertical line: move x-coordinate by 0.5 pixels */
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context->move_to (self.x1 - 0.5, self.y0);
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context->line_to (self.x1 - 0.5, self.y1);
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}
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if (_outline_what & TOP) {
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/* horizontal line: move y-coordinate by 0.5 pixels */
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context->move_to (self.x0, self.y0 + 0.5);
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context->line_to (self.x1, self.y0 + 0.5);
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}
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}
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context->stroke ();
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}
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}
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void
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Rectangle::compute_bounding_box () const
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{
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if (!_rect.empty()) {
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Rect r = _rect.fix ();
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/* our outlines are always inside our coordinates, but we have
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* to ensure that our bounding box fully *contains* the
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* rectangle
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*
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* XXX: or something like that, waffle.
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*
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*/
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_bounding_box = r.expand (1.0);
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}
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2013-04-04 00:32:52 -04:00
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_bounding_box_dirty = false;
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}
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void
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Rectangle::set (Rect const & r)
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{
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/* We don't update the bounding box here; it's just
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as cheap to do it when asked.
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*/
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begin_change ();
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_rect = r;
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_bounding_box_dirty = true;
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end_change ();
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DEBUG_TRACE (PBD::DEBUG::CanvasItemsDirtied, "canvas item dirty: rectangle change (set)\n");
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}
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void
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Rectangle::set_x0 (Coord x0)
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{
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begin_change ();
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_rect.x0 = x0;
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_bounding_box_dirty = true;
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end_change ();
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DEBUG_TRACE (PBD::DEBUG::CanvasItemsDirtied, "canvas item dirty: rectangle change (x0)\n");
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}
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void
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Rectangle::set_y0 (Coord y0)
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{
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begin_change ();
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_rect.y0 = y0;
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_bounding_box_dirty = true;
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end_change();
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DEBUG_TRACE (PBD::DEBUG::CanvasItemsDirtied, "canvas item dirty: rectangle change (y0)\n");
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}
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void
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Rectangle::set_x1 (Coord x1)
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{
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begin_change ();
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_rect.x1 = x1;
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_bounding_box_dirty = true;
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end_change ();
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DEBUG_TRACE (PBD::DEBUG::CanvasItemsDirtied, "canvas item dirty: rectangle change (x1)\n");
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}
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void
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Rectangle::set_y1 (Coord y1)
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{
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begin_change ();
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_rect.y1 = y1;
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_bounding_box_dirty = true;
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end_change ();
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DEBUG_TRACE (PBD::DEBUG::CanvasItemsDirtied, "canvas item dirty: rectangle change (y1)\n");
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}
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void
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Rectangle::set_outline_what (What what)
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{
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begin_change ();
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_outline_what = what;
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end_change ();
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}
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void
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Rectangle::set_outline_what (int what)
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{
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set_outline_what ((What) what);
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}
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