e829448207
git-svn-id: svn://localhost/ardour2/branches/3.0@10321 d708f5d6-7413-0410-9779-e7cbd77b26cf
108 lines
2.3 KiB
C++
108 lines
2.3 KiB
C++
/*
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Copyright (C) 2009 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 "cairo_widget.h"
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#include "gui_thread.h"
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CairoWidget::CairoWidget ()
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: _width (1)
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, _height (1)
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, _active_state (CairoWidget::ActiveState (0))
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, _visual_state (CairoWidget::VisualState (0))
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{
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}
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CairoWidget::~CairoWidget ()
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{
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}
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bool
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CairoWidget::on_expose_event (GdkEventExpose *ev)
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{
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cairo_t* cr = gdk_cairo_create (get_window ()->gobj());
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cairo_rectangle (cr, ev->area.x, ev->area.y, ev->area.width, ev->area.height);
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cairo_clip (cr);
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render (cr);
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cairo_destroy (cr);
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return true;
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}
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/** Marks the widget as dirty, so that render () will be called on
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* the next GTK expose event.
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*/
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void
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CairoWidget::set_dirty ()
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{
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ENSURE_GUI_THREAD (*this, &CairoWidget::set_dirty)
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queue_draw ();
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}
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/** Handle a size allocation.
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* @param alloc GTK allocation.
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*/
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void
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CairoWidget::on_size_allocate (Gtk::Allocation& alloc)
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{
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Gtk::EventBox::on_size_allocate (alloc);
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_width = alloc.get_width ();
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_height = alloc.get_height ();
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set_dirty ();
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}
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Gdk::Color
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CairoWidget::get_parent_bg ()
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{
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Widget* parent;
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parent = get_parent ();
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while (parent && !parent->get_has_window()) {
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parent = parent->get_parent();
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}
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if (parent && parent->get_has_window()) {
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return parent->get_style ()->get_bg (parent->get_state());
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}
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return get_style ()->get_bg (get_state());
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}
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void
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CairoWidget::set_active_state (CairoWidget::ActiveState s)
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{
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if (_active_state != s) {
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_active_state = s;
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StateChanged ();
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}
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}
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void
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CairoWidget::set_visual_state (CairoWidget::VisualState s)
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{
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if (_visual_state != s) {
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_visual_state = s;
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StateChanged ();
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}
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}
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