David Robillard
bd577a0663
This could only happen with a broken widget, but it shuts up clang and doesn't hurt.
114 lines
2.7 KiB
C++
114 lines
2.7 KiB
C++
/*
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Copyright (C) 2014 Paul Davis
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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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#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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#include "canvas/canvas.h"
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#include "canvas/widget.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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Widget::Widget (Canvas* c, CairoWidget& w)
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: Item (c)
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, _widget (w)
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{
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Event.connect (sigc::mem_fun (*this, &Widget::event_proxy));
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}
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Widget::Widget (Item* parent, CairoWidget& w)
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: Item (parent)
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, _widget (w)
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{
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Event.connect (sigc::mem_fun (*this, &Widget::event_proxy));
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}
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bool
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Widget::event_proxy (GdkEvent* ev)
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{
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/* XXX need to translate coordinate into widget's own coordinate space */
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return _widget.event (ev);
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}
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void
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Widget::render (Rect const & area, Cairo::RefPtr<Cairo::Context> context) const
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{
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// std::cerr << "Render widget\n";
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if (!_bounding_box) {
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std::cerr << "no bbox\n";
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return;
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}
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Rect self = item_to_window (_bounding_box.get());
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boost::optional<Rect> r = self.intersection (area);
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if (!r) {
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std::cerr << "no intersection\n";
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return;
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}
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Rect draw = r.get ();
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cairo_rectangle_t crect;
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crect.x = draw.x0;
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crect.y = draw.y0;
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crect.height = draw.height();
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crect.width = draw.width();
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// std::cerr << "will draw " << draw << "\n";
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context->save ();
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context->translate (-draw.x0, -draw.y0);
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//context->rectangle (draw.x0, draw.y0, draw.width(), draw.height());
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// context->clip ();
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_widget.render (context->cobj(), &crect);
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context->restore ();
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}
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void
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Widget::compute_bounding_box () const
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{
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std::cerr << "cbbox for widget\n";
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GtkRequisition req = { 0, 0 };
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Gtk::Allocation alloc;
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_widget.size_request (req);
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std::cerr << "widget wants " << req.width << " x " << req.height << "\n";
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_bounding_box = Rect (0, 0, req.width, req.height);
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/* make sure the widget knows that it got what it asked for */
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alloc.set_x (0);
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alloc.set_y (0);
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alloc.set_width (req.width);
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alloc.set_height (req.height);
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_widget.size_allocate (alloc);
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_bounding_box_dirty = false;
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}
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