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> d = self.intersection (area);
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if (!d) {
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return;
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}
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Rect draw = d.get();
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static const double boundary = 0.5;
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draw.x0 = max (self.x0, max (0.0, draw.x0 - boundary));
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draw.x1 = min (self.x1, min (2000.0, draw.x1 + boundary));
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draw.y0 = max (self.y0, max (0.0, draw.y0 - boundary));
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draw.y1 = min (self.y1, min (2000.0, draw.y1 + boundary));
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if (_fill) {
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setup_fill_context (context);
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context->rectangle (draw.x0, draw.y0, draw.width(), draw.height());
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2013-04-12 11:08:24 -04:00
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if (!_outline) {
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context->fill ();
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} else {
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/* special/common case: outline the entire rectangle is
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* requested, so just use the same path for the fill
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* and stroke.
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*/
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if (_outline_what == What (LEFT|RIGHT|BOTTOM|TOP)) {
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context->fill_preserve();
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setup_outline_context (context);
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context->stroke ();
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} else {
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context->fill ();
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}
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}
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}
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if (_outline) {
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setup_outline_context (context);
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2013-04-12 11:08:24 -04:00
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if (_outline_what == What (LEFT|RIGHT|BOTTOM|TOP)) {
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2013-04-12 11:15:45 -04:00
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2013-05-02 18:21:35 -04:00
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/* if we filled and use full outline, we are already
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* done. otherwise, draw the frame here.
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*/
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if (!_fill) {
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context->rectangle (draw.x0, draw.y0, draw.width(), draw.height());
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context->stroke ();
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}
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} else {
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if (_outline_what & LEFT) {
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context->move_to (draw.x0, draw.y0);
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context->line_to (draw.x0, draw.y1);
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}
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if (_outline_what & BOTTOM) {
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context->move_to (draw.x0, draw.y1);
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context->line_to (draw.x1, draw.y1);
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}
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if (_outline_what & RIGHT) {
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context->move_to (draw.x1, draw.y0);
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context->line_to (draw.x1, draw.y1);
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}
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if (_outline_what & TOP) {
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context->move_to (draw.x0, draw.y0);
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context->line_to (draw.x1, draw.y0);
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}
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context->stroke ();
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}
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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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Rect r = _rect.fix ();
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_bounding_box = boost::optional<Rect> (r.expand (_outline_width / 2));
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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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