/* === S Y N F I G ========================================================= */
/*! \file renderer_background.cpp
** \brief Implementation of the background renderer. Usually a checkerboard
**
** $Id$
**
** \legal
** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
** Copyright (c) 2013 Carlos López
**
** This package 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 package 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.
** \endlegal
*/
/* ========================================================================= */
/* === H E A D E R S ======================================================= */
#ifdef USING_PCH
# include "pch.h"
#else
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <synfig/general.h>
#include "renderer_background.h"
#include "workarea.h"
#include <ETL/misc>
#include <gui/localization.h>
#endif
/* === U S I N G =========================================================== */
using namespace std;
using namespace etl;
using namespace synfig;
using namespace studio;
/* === M A C R O S ========================================================= */
/* === G L O B A L S ======================================================= */
/* === P R O C E D U R E S ================================================= */
/* === M E T H O D S ======================================================= */
Renderer_Background::~Renderer_Background()
{
}
bool
Renderer_Background::get_enabled_vfunc()const
{
return true;
}
void
Renderer_Background::render_vfunc(
const Glib::RefPtr<Gdk::Window>& drawable,
const Gdk::Rectangle& /*expose_area*/
)
{
assert(get_work_area());
if(!get_work_area())
return;
VectorInt offset = get_work_area()->get_windows_offset();
int w=get_w();
int h=get_h();
Cairo::RefPtr<Cairo::Context> cr = drawable->create_cairo_context();
synfig::Vector grid_size(get_work_area()->get_background_size());
Cairo::RefPtr<Cairo::Surface> surface_background = draw_check_pattern(grid_size[0], grid_size[1]);
cr->save();
cr->set_source(surface_background, offset[0] + w/2, offset[1] - h/2);
Cairo::RefPtr<Cairo::SurfacePattern> sp_ptr = Cairo::SurfacePattern::create(surface_background);
sp_ptr->set_filter(Cairo::FILTER_NEAREST);
sp_ptr->set_extend(Cairo::EXTEND_REPEAT);
cr->set_source(sp_ptr);
cr->rectangle(offset[0], offset[1], w, h);
cr->clip();
cr->paint();
cr->restore();
}
Cairo::RefPtr<Cairo::Surface>
Renderer_Background::draw_check_pattern(int width, int height)
{
Cairo::RefPtr<Cairo::Surface> surface_ptr = Cairo::ImageSurface::create (Cairo::FORMAT_RGB24, width*2, height*2);
Cairo::RefPtr<Cairo::Context> cr_ptr = Cairo::Context::create (surface_ptr);
synfig::Color first_color(get_work_area()->get_background_first_color());
cr_ptr->set_source_rgb(first_color.get_r(), first_color.get_g(), first_color.get_b());
cr_ptr->paint();
synfig::Color second_color(get_work_area()->get_background_second_color());
cr_ptr->set_source_rgb(second_color.get_r(), second_color.get_g(), second_color.get_b());
cr_ptr->rectangle(int(width), 0 , width, height);
cr_ptr->rectangle(0, int(height), width , height);
cr_ptr->fill();
return surface_ptr;
}