287 lines
7.8 KiB
C++
287 lines
7.8 KiB
C++
/* Copyright (C) 2005 The cairomm Development Team
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*/
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#include <cairomm/pattern.h>
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#include <cairomm/private.h>
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namespace Cairo
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{
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Pattern::Pattern()
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: m_cobject(0)
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{
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}
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Pattern::Pattern(cairo_pattern_t* cobject, bool has_reference)
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: m_cobject(0)
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{
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if(has_reference)
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m_cobject = cobject;
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else
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m_cobject = cairo_pattern_reference(cobject);
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}
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Pattern::~Pattern()
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{
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if(m_cobject)
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cairo_pattern_destroy(m_cobject);
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}
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void Pattern::reference() const
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{
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cairo_pattern_reference(m_cobject);
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}
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void Pattern::unreference() const
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{
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cairo_pattern_destroy(m_cobject);
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}
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void Pattern::set_matrix(const cairo_matrix_t &matrix)
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{
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cairo_pattern_set_matrix(m_cobject, &matrix);
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check_object_status_and_throw_exception(*this);
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}
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void Pattern::get_matrix(cairo_matrix_t &matrix) const
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{
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cairo_pattern_get_matrix(m_cobject, &matrix);
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check_object_status_and_throw_exception(*this);
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}
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PatternType Pattern::get_type() const
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{
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cairo_pattern_type_t pattern_type = cairo_pattern_get_type(m_cobject);
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check_object_status_and_throw_exception(*this);
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return static_cast<PatternType>(pattern_type);
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}
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SolidPattern::SolidPattern(cairo_pattern_t* cobject, bool has_reference)
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: Pattern(cobject, has_reference)
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{
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}
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void
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SolidPattern::get_rgba(double& red, double& green,
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double& blue, double& alpha) const
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{
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// ignore the return value since we know that this is a solid color pattern
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cairo_pattern_get_rgba(m_cobject, &red, &green, &blue, &alpha);
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check_object_status_and_throw_exception(*this);
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}
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SolidPattern::~SolidPattern()
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{
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}
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RefPtr<SolidPattern> SolidPattern::create_rgb(double red, double green, double blue)
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{
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cairo_pattern_t* cobject = cairo_pattern_create_rgb(red, green, blue);
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check_status_and_throw_exception(cairo_pattern_status(cobject));
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return RefPtr<SolidPattern>(new SolidPattern(cobject, true /* has reference */));
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}
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RefPtr<SolidPattern> SolidPattern::create_rgba(double red, double green, double blue, double alpha)
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{
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cairo_pattern_t* cobject = cairo_pattern_create_rgba(red, green, blue, alpha);
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check_status_and_throw_exception(cairo_pattern_status(cobject));
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return RefPtr<SolidPattern>(new SolidPattern(cobject, true /* has reference */));
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}
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SurfacePattern::SurfacePattern(const RefPtr<Surface>& surface)
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{
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m_cobject = cairo_pattern_create_for_surface(surface->cobj());
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check_object_status_and_throw_exception(*this);
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}
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RefPtr<Surface>
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SurfacePattern::get_surface()
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{
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cairo_surface_t* surface = 0;
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// we can ignore the return value since we know this is a surface pattern
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cairo_pattern_get_surface(const_cast<cairo_pattern_t*>(m_cobject), &surface);
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check_object_status_and_throw_exception(*this);
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return RefPtr<Surface>(new Surface(surface, false /* does not have reference */));
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}
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RefPtr<const Surface>
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SurfacePattern::get_surface() const
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{
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return const_cast<SurfacePattern*>(this)->get_surface();
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}
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RefPtr<SurfacePattern> SurfacePattern::create(const RefPtr<Surface>& surface)
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{
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return RefPtr<SurfacePattern>(new SurfacePattern(surface));
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}
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SurfacePattern::SurfacePattern(cairo_pattern_t* cobject, bool has_reference)
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: Pattern(cobject, has_reference)
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{
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}
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SurfacePattern::~SurfacePattern()
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{
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}
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void SurfacePattern::set_extend(Extend extend)
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{
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cairo_pattern_set_extend(m_cobject, (cairo_extend_t)extend);
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check_object_status_and_throw_exception(*this);
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}
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Extend SurfacePattern::get_extend() const
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{
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const Extend result = static_cast<Extend>(cairo_pattern_get_extend(m_cobject));
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check_object_status_and_throw_exception(*this);
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return result;
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}
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void SurfacePattern::set_filter(Filter filter)
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{
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cairo_pattern_set_filter(m_cobject, (cairo_filter_t)filter);
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check_object_status_and_throw_exception(*this);
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}
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Filter SurfacePattern::get_filter() const
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{
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Filter result = static_cast<Filter>(cairo_pattern_get_filter(m_cobject));
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check_object_status_and_throw_exception(*this);
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return result;
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}
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Gradient::Gradient()
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{
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}
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Gradient::Gradient(cairo_pattern_t* cobject, bool has_reference)
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: Pattern(cobject, has_reference)
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{
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}
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Gradient::~Gradient()
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{
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}
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void Gradient::add_color_stop_rgb(double offset, double red, double green, double blue)
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{
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cairo_pattern_add_color_stop_rgb(m_cobject, offset, red, green, blue);
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check_object_status_and_throw_exception(*this);
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}
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void Gradient::add_color_stop_rgba(double offset, double red, double green, double blue, double alpha)
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{
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cairo_pattern_add_color_stop_rgba(m_cobject, offset, red, green, blue, alpha);
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check_object_status_and_throw_exception(*this);
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}
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std::vector<ColorStop>
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Gradient::get_color_stops() const
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{
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std::vector<ColorStop> stops;
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int num_stops = 0;
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// we can ignore the return value since we know this is a gradient pattern
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cairo_pattern_get_color_stop_count(m_cobject, &num_stops);
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// since we know the total number of stops, we can avoid re-allocation with
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// each addition to the vector by pre-allocating the required number
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stops.reserve(num_stops);
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for(int i = 0; i < num_stops; ++i)
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{
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ColorStop stop;
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cairo_pattern_get_color_stop_rgba(m_cobject, i, &stop.offset, &stop.red,
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&stop.green, &stop.blue, &stop.alpha);
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stops.push_back(stop);
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}
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return stops;
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}
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LinearGradient::LinearGradient(double x0, double y0, double x1, double y1)
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{
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m_cobject = cairo_pattern_create_linear(x0, y0, x1, y1);
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check_object_status_and_throw_exception(*this);
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}
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void
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LinearGradient::get_linear_points(double &x0, double &y0,
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double &x1, double &y1) const
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{
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// ignore the return value since we know that this is a linear gradient
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// pattern
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cairo_pattern_get_linear_points(m_cobject, &x0, &y0, &x1, &y1);
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check_object_status_and_throw_exception(*this);
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}
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RefPtr<LinearGradient> LinearGradient::create(double x0, double y0, double x1, double y1)
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{
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return RefPtr<LinearGradient>(new LinearGradient(x0, y0, x1, y1));
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}
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LinearGradient::LinearGradient(cairo_pattern_t* cobject, bool has_reference)
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: Gradient(cobject, has_reference)
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{
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}
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LinearGradient::~LinearGradient()
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{
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}
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RadialGradient::RadialGradient(double cx0, double cy0, double radius0, double cx1, double cy1, double radius1)
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{
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m_cobject = cairo_pattern_create_radial(cx0, cy0, radius0, cx1, cy1, radius1);
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check_object_status_and_throw_exception(*this);
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}
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void
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RadialGradient::get_radial_circles(double& x0, double& y0, double& r0,
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double& x1, double& y1, double& r1) const
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{
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// ignore the return value since we know that this is a radial gradient
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// pattern
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cairo_pattern_get_radial_circles(const_cast<cairo_pattern_t*>(m_cobject),
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&x0, &y0, &r0, &x1, &y1, &r1);
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check_object_status_and_throw_exception(*this);
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}
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RefPtr<RadialGradient> RadialGradient::create(double cx0, double cy0, double radius0, double cx1, double cy1, double radius1)
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{
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return RefPtr<RadialGradient>(new RadialGradient(cx0, cy0, radius0, cx1, cy1, radius1));
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}
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RadialGradient::RadialGradient(cairo_pattern_t* cobject, bool has_reference)
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: Gradient(cobject, has_reference)
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{
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}
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RadialGradient::~RadialGradient()
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{
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}
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} //namespace Cairo
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// vim: ts=2 sw=2 et
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