136 lines
3.1 KiB
C++
136 lines
3.1 KiB
C++
/*
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* Copyright (C) 2014-2017 Paul Davis <paul@linuxaudiosystems.com>
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* Copyright (C) 2016-2017 Robin Gareus <robin@gareus.org>
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*
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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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*
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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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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 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/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 "gtkmm2ext/cairo_widget.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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w.set_canvas_widget ();
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w.QueueDraw.connect (sigc::mem_fun(*this, &Widget::queue_draw));
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w.QueueResize.connect (sigc::mem_fun(*this, &Widget::queue_resize));
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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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w.set_canvas_widget ();
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w.QueueDraw.connect (sigc::mem_fun(*this, &Widget::queue_draw));
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w.QueueResize.connect (sigc::mem_fun(*this, &Widget::queue_resize));
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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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bool
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Widget::queue_draw ()
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{
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begin_visual_change ();
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end_visual_change ();
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return true;
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}
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bool
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Widget::queue_resize ()
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{
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begin_change ();
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end_change ();
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return true;
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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 " << name << " @ " << position() << endl;
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if (!_bounding_box) {
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return;
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}
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Rect self = item_to_window (_bounding_box);
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Rect r = self.intersection (area);
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if (!r) {
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return;
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}
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Rect draw = r;
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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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Duple p = position_offset();
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context->save ();
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context->translate (p.x, p.y);
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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, &crect);
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context->restore ();
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}
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void
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Widget::_size_allocate (Rect const & r)
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{
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Item::_size_allocate (r);
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Gtk::Allocation alloc;
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alloc.set_x (0);
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alloc.set_y (0);
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alloc.set_width (r.width());
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alloc.set_height (r.height());
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_widget.size_allocate (alloc);
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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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if (_allocation) {
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_bounding_box = Rect (0, 0, _allocation.width(), _allocation.height());
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} else {
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GtkRequisition req = _widget.size_request ();
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_bounding_box = Rect (0., 0., req.width, req.height);
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}
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set_bbox_clean ();
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}
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