GradientCairo.cpp revision 8f72e70a9fd78eec56623b3a62e68f16b7b27e28
18e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project/* 28e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * Copyright (C) 2006, 2007, 2008 Apple Computer, Inc. All rights reserved. 38e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * Copyright (C) 2007 Alp Toker <alp@atoker.com> 48e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * 58e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * Redistribution and use in source and binary forms, with or without 68e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * modification, are permitted provided that the following conditions 78e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * are met: 88e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * 1. Redistributions of source code must retain the above copyright 98e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * notice, this list of conditions and the following disclaimer. 108e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * 2. Redistributions in binary form must reproduce the above copyright 118e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * notice, this list of conditions and the following disclaimer in the 128e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * documentation and/or other materials provided with the distribution. 138e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * 148e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 158e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 168e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 178e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 188e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 198e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 208e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 218e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 228e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 238e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 248e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 258e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project */ 268e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 278e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include "config.h" 288e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include "Gradient.h" 298e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 308e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include "CSSParser.h" 318e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include "GraphicsContext.h" 328e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include <cairo.h> 338e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 348e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectnamespace WebCore { 358e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 368e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectvoid Gradient::platformDestroy() 378e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project{ 388e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project if (m_gradient) { 398e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project cairo_pattern_destroy(m_gradient); 408e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project m_gradient = 0; 418e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project } 428e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project} 438e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 448e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectcairo_pattern_t* Gradient::platformGradient() 458e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project{ 468e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project if (m_gradient) 478e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project return m_gradient; 488e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 498e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project if (m_radial) 508e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project m_gradient = cairo_pattern_create_radial(m_p0.x(), m_p0.y(), m_r0, m_p1.x(), m_p1.y(), m_r1); 518e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project else 528e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project m_gradient = cairo_pattern_create_linear(m_p0.x(), m_p0.y(), m_p1.x(), m_p1.y()); 538e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 548e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project Vector<ColorStop>::iterator stopIterator = m_stops.begin(); 558e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project while (stopIterator != m_stops.end()) { 568e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project cairo_pattern_add_color_stop_rgba(m_gradient, stopIterator->stop, stopIterator->red, stopIterator->green, stopIterator->blue, stopIterator->alpha); 578e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project ++stopIterator; 588e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project } 598e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 608f72e70a9fd78eec56623b3a62e68f16b7b27e28Feng Qian switch (m_spreadMethod) { 618f72e70a9fd78eec56623b3a62e68f16b7b27e28Feng Qian case SpreadMethodPad: 628f72e70a9fd78eec56623b3a62e68f16b7b27e28Feng Qian cairo_pattern_set_extend(m_gradient, CAIRO_EXTEND_PAD); 638f72e70a9fd78eec56623b3a62e68f16b7b27e28Feng Qian break; 648f72e70a9fd78eec56623b3a62e68f16b7b27e28Feng Qian case SpreadMethodReflect: 658f72e70a9fd78eec56623b3a62e68f16b7b27e28Feng Qian cairo_pattern_set_extend(m_gradient, CAIRO_EXTEND_REFLECT); 668f72e70a9fd78eec56623b3a62e68f16b7b27e28Feng Qian break; 678f72e70a9fd78eec56623b3a62e68f16b7b27e28Feng Qian case SpreadMethodRepeat: 688f72e70a9fd78eec56623b3a62e68f16b7b27e28Feng Qian cairo_pattern_set_extend(m_gradient, CAIRO_EXTEND_REPEAT); 698f72e70a9fd78eec56623b3a62e68f16b7b27e28Feng Qian break; 708f72e70a9fd78eec56623b3a62e68f16b7b27e28Feng Qian } 718f72e70a9fd78eec56623b3a62e68f16b7b27e28Feng Qian 728f72e70a9fd78eec56623b3a62e68f16b7b27e28Feng Qian cairo_matrix_t matrix = m_gradientSpaceTransformation; 738f72e70a9fd78eec56623b3a62e68f16b7b27e28Feng Qian cairo_matrix_invert(&matrix); 748f72e70a9fd78eec56623b3a62e68f16b7b27e28Feng Qian cairo_pattern_set_matrix(m_gradient, &matrix); 758f72e70a9fd78eec56623b3a62e68f16b7b27e28Feng Qian 768e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project return m_gradient; 778e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project} 788e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 798e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectvoid Gradient::fill(GraphicsContext* context, const FloatRect& rect) 808e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project{ 818e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project cairo_t* cr = context->platformContext(); 828e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 838e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project cairo_save(cr); 848e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project cairo_set_source(cr, platformGradient()); 858e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project cairo_rectangle(cr, rect.x(), rect.y(), rect.width(), rect.height()); 868e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project cairo_fill(cr); 878e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project cairo_restore(cr); 888e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project} 898e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 908e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project} //namespace 91