+/*
+ Copyright (C) 2011-2013 Paul Davis
+ Author: Carl Hetherington <cth@carlh.net>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
#include <iostream>
#include <cairomm/context.h>
#include "pbd/stacktrace.h"
-#include "pbd/xml++.h"
#include "pbd/compose.h"
+
+#include "canvas/canvas.h"
#include "canvas/rectangle.h"
#include "canvas/debug.h"
#include "canvas/utils.h"
, Fill (parent)
, _outline_what ((What) (LEFT | RIGHT | TOP | BOTTOM))
{
-
}
Rectangle::Rectangle (Group* parent, Rect const & rect)
}
void
-Rectangle::render (Rect const & /*area*/, Cairo::RefPtr<Cairo::Context> context) const
+Rectangle::render (Rect const & area, Cairo::RefPtr<Cairo::Context> context) const
{
- Rect plot = _rect;
+ Rect self = item_to_window (_rect);
+ boost::optional<Rect> r = self.intersection (area);
+
+ if (!r) {
+ std::cerr << whatami() << '/' << name << " not covered by render area! ... " << self << " vs. " << area << std::endl;
+ return;
+ }
- plot.x1 = min (plot.x1, CAIRO_MAX);
- plot.y1 = min (plot.y1, CAIRO_MAX);
+ Rect draw = r.get ();
if (_fill) {
- setup_fill_context (context);
- context->rectangle (plot.x0, plot.y0, plot.width(), plot.height());
+ if (_stops.empty()) {
+ setup_fill_context (context);
+ } else {
+ setup_gradient_context (context, self, Duple (draw.x0, draw.y0));
+ }
+ context->rectangle (draw.x0, draw.y0, draw.width(), draw.height());
context->fill ();
}
-
+
if (_outline) {
- if (_outline_what & LEFT) {
- context->move_to (plot.x0, plot.y0);
- context->line_to (plot.x0, plot.y1);
- }
-
- if (_outline_what & BOTTOM) {
- context->move_to (plot.x0, plot.y1);
- context->line_to (plot.x1, plot.y1);
- }
-
- if (_outline_what & RIGHT) {
- context->move_to (plot.x1, plot.y0);
- context->line_to (plot.x1, plot.y1);
- }
-
- if (_outline_what & TOP) {
- context->move_to (plot.x0, plot.y0);
- context->line_to (plot.x0, plot.y1);
+
+ setup_outline_context (context);
+
+ if (_outline_what == What (LEFT|RIGHT|BOTTOM|TOP)) {
+
+ context->rectangle (self.x0 + 0.5, self.y0 + 0.5, self.width(), self.height());
+
+ } else {
+
+ context->set_line_cap (Cairo::LINE_CAP_SQUARE);
+
+ /* see the cairo FAQ on single pixel lines to see why we do
+ * this expansion of the perimeter.
+ */
+
+ if (_outline_what & LEFT) {
+ /* vertical line: move x-coordinate by 0.5 pixels */
+ context->move_to (self.x0 + 0.5, self.y0);
+ context->line_to (self.x0 + 0.5, self.y1);
+ }
+
+ if (_outline_what & BOTTOM) {
+ /* horizontal line: move y-coordinate by 0.5 pixels */
+ context->move_to (self.x0, self.y1 - 0.5);
+ context->line_to (self.x1, self.y1 - 0.5);
+ }
+
+ if (_outline_what & RIGHT) {
+ /* vertical line: move x-coordinate by 0.5 pixels */
+ context->move_to (self.x1 - 0.5, self.y0);
+ context->line_to (self.x1 - 0.5, self.y1);
+ }
+
+ if (_outline_what & TOP) {
+ /* horizontal line: move y-coordinate by 0.5 pixels */
+ context->move_to (self.x0, self.y0 + 0.5);
+ context->line_to (self.x1, self.y0 + 0.5);
+ }
}
- setup_outline_context (context);
context->stroke ();
}
}
void
Rectangle::compute_bounding_box () const
{
- Rect r = _rect.fix ();
- _bounding_box = boost::optional<Rect> (r.expand (_outline_width / 2));
-
+ if (!_rect.empty()) {
+ Rect r = _rect.fix ();
+
+ /* our outlines are always inside our coordinates, but we have
+ * to ensure that our bounding box fully *contains* the
+ * rectangle
+ *
+ * XXX: or something like that, waffle.
+ *
+ */
+ _bounding_box = r.expand (1.0);
+ }
+
_bounding_box_dirty = false;
}
set_outline_what ((What) what);
}
-XMLNode *
-Rectangle::get_state () const
-{
- XMLNode* node = new XMLNode ("Rectangle");
-#ifdef CANVAS_DEBUG
- if (!name.empty ()) {
- node->add_property ("name", name);
- }
-#endif
- node->add_property ("x0", string_compose ("%1", _rect.x0));
- node->add_property ("y0", string_compose ("%1", _rect.y0));
- node->add_property ("x1", string_compose ("%1", _rect.x1));
- node->add_property ("y1", string_compose ("%1", _rect.y1));
- node->add_property ("outline-what", string_compose ("%1", _outline_what));
-
- add_item_state (node);
- add_outline_state (node);
- add_fill_state (node);
- return node;
-}
-
-void
-Rectangle::set_state (XMLNode const * node)
-{
- _rect.x0 = atof (node->property("x0")->value().c_str());
- _rect.y0 = atof (node->property("y0")->value().c_str());
- _rect.x1 = atof (node->property("x1")->value().c_str());
- _rect.y1 = atof (node->property("y1")->value().c_str());
- _outline_what = (What) atoi (node->property("outline-what")->value().c_str());
-
- set_item_state (node);
- set_outline_state (node);
- set_fill_state (node);
-
- _bounding_box_dirty = true;
-}
projects / ardour.git / blobdiff