cairo_packer.cc

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/*
    Copyright (C) 2012 Paul Davis 

    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 "gtkmm2ext/utils.h"
#include "gtkmm2ext/cairo_widget.h"
#include "gtkmm2ext/cairo_packer.h"

void
CairoPacker::draw_background (Gtk::Widget& w, GdkEventExpose*)
{
        int x, y;
        Gtk::Widget* window_parent;
        Glib::RefPtr<Gdk::Window> win = Gtkmm2ext::window_to_draw_on (w, &window_parent);
        
        if (win) {
                
                Cairo::RefPtr<Cairo::Context> context = win->create_cairo_context();
                w.translate_coordinates (*window_parent, 0, 0, x, y);

                Gdk::Color bg = get_bg ();

                context->set_source_rgba (bg.get_red_p(), bg.get_green_p(), bg.get_blue_p(), 1.0);
                Gtkmm2ext::rounded_rectangle (context, x, y, w.get_allocation().get_width(), w.get_allocation().get_height(), 4);
                context->fill ();
        }
}

CairoHPacker::CairoHPacker ()
{
}

void
CairoHPacker::on_realize ()
{
        HBox::on_realize ();
        CairoWidget::provide_background_for_cairo_widget (*this, get_bg ());
}

Gdk::Color
CairoHPacker::get_bg () const
{
        return get_style()->get_bg (Gtk::STATE_NORMAL);
}

bool
CairoHPacker::on_expose_event (GdkEventExpose* ev)
{
        draw_background (*this, ev);
        return HBox::on_expose_event (ev);
}

CairoVPacker::CairoVPacker ()
{
}

bool
CairoVPacker::on_expose_event (GdkEventExpose* ev)
{
        draw_background (*this, ev);
        return VBox::on_expose_event (ev);
}

void
CairoVPacker::on_realize ()
{
        VBox::on_realize ();
        CairoWidget::provide_background_for_cairo_widget (*this, get_bg());
}

Gdk::Color
CairoVPacker::get_bg () const
{
        return get_style()->get_bg (Gtk::STATE_NORMAL);
}