LUMIERA.clone/src/gui/util/cairo-util.cpp
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2016-11-03 18:22:31 +01:00

86 lines
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C++

/*
CairoUtil - utility functions for Cairo
Copyright (C) Lumiera.org
2010, Stefan Kangas <skangas@skangas.se>
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.
* *****************************************************/
/** @file cairo-util.cpp
** TODO cairo-util.cpp
*/
#include "gui/util/cairo-util.hpp"
namespace gui {
namespace util {
RefPtr<SolidPattern>
CairoUtil::pattern_set_red (const RefPtr<SolidPattern> color, double red)
{
double old_red;
double blue;
double green;
double alpha;
color->get_rgba (old_red, blue, green, alpha);
return Cairo::SolidPattern::create_rgba (red, blue, green, alpha);
}
RefPtr<SolidPattern>
CairoUtil::pattern_set_green (const RefPtr<SolidPattern> color, double blue)
{
double red;
double old_blue;
double green;
double alpha;
color->get_rgba (red, old_blue, green, alpha);
return Cairo::SolidPattern::create_rgba (red, blue, green, alpha);
}
RefPtr<SolidPattern>
CairoUtil::pattern_set_blue (const RefPtr<SolidPattern> color, double green)
{
double red;
double blue;
double old_green;
double alpha;
color->get_rgba (red, blue, old_green, alpha);
return Cairo::SolidPattern::create_rgba (red, blue, green, alpha);
}
RefPtr<SolidPattern>
CairoUtil::pattern_set_alpha (const RefPtr<SolidPattern> color, double alpha)
{
double red;
double blue;
double green;
double old_alpha;
color->get_rgba (red, blue, green, old_alpha);
return Cairo::SolidPattern::create_rgba (red, blue, green, alpha);
}
}}// namespace gui::util