author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Thu, 27 Aug 2009 07:44:59 +0300 | |
changeset 16 | a359256acfc6 |
parent 0 | dd21522fd290 |
permissions | -rw-r--r-- |
0
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/* |
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* Copyright (C) 2004, 2005, 2006 Apple Computer, Inc. All rights reserved. |
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* Copyright (C) 2007 Alp Toker <alp@atoker.com> |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* |
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* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY |
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR |
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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#include "config.h" |
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#include "BitmapImage.h" |
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#if PLATFORM(CAIRO) |
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#include "AffineTransform.h" |
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#include "FloatRect.h" |
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#include "GraphicsContext.h" |
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#include <cairo.h> |
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#include <math.h> |
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|
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namespace WebCore { |
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|
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void FrameData::clear() |
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{ |
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if (m_frame) { |
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cairo_surface_destroy(m_frame); |
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m_frame = 0; |
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m_duration = 0.; |
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m_hasAlpha = true; |
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} |
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} |
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|
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// ================================================ |
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// Image Class |
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// ================================================ |
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// Drawing Routines |
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|
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void BitmapImage::draw(GraphicsContext* context, const FloatRect& dst, const FloatRect& src, CompositeOperator op) |
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{ |
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cairo_t* cr = context->platformContext(); |
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if (!m_source.initialized()) |
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return; |
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|
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cairo_surface_t* image = frameAtIndex(m_currentFrame); |
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if (!image) // If it's too early we won't have an image yet. |
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return; |
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IntSize selfSize = size(); |
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FloatRect srcRect(src); |
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FloatRect dstRect(dst); |
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cairo_save(cr); |
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// Set the compositing operation. |
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if (op == CompositeSourceOver && !frameHasAlphaAtIndex(m_currentFrame)) |
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context->setCompositeOperation(CompositeCopy); |
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else |
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context->setCompositeOperation(op); |
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// If we're drawing a sub portion of the image or scaling then create |
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// a pattern transformation on the image and draw the transformed pattern. |
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// Test using example site at http://www.meyerweb.com/eric/css/edge/complexspiral/demo.html |
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cairo_pattern_t* pattern = cairo_pattern_create_for_surface(image); |
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|
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// To avoid the unwanted gradient effect (#14017) we use |
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// CAIRO_FILTER_NEAREST now, but the real fix will be to have |
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// CAIRO_EXTEND_PAD implemented for surfaces in Cairo allowing us to still |
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// use bilinear filtering |
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cairo_pattern_set_filter(pattern, CAIRO_FILTER_NEAREST); |
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float scaleX = srcRect.width() / dstRect.width(); |
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float scaleY = srcRect.height() / dstRect.height(); |
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cairo_matrix_t matrix = { scaleX, 0, 0 , scaleY, srcRect.x(), srcRect.y() }; |
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cairo_pattern_set_matrix(pattern, &matrix); |
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// Draw the image. |
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cairo_translate(cr, dstRect.x(), dstRect.y()); |
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cairo_set_source(cr, pattern); |
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cairo_rectangle(cr, 0, 0, dstRect.width(), dstRect.height()); |
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cairo_fill(cr); |
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cairo_pattern_destroy(pattern); |
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cairo_restore(cr); |
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startAnimation(); |
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} |
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void Image::drawPattern(GraphicsContext* context, const FloatRect& tileRect, const AffineTransform& patternTransform, |
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const FloatPoint& phase, CompositeOperator op, const FloatRect& destRect) |
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{ |
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cairo_surface_t* image = nativeImageForCurrentFrame(); |
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if (!image) // If it's too early we won't have an image yet. |
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return; |
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113 |
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cairo_t* cr = context->platformContext(); |
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context->save(); |
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116 |
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// TODO: Make use of tileRect. |
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118 |
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cairo_pattern_t* pattern = cairo_pattern_create_for_surface(image); |
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cairo_pattern_set_extend(pattern, CAIRO_EXTEND_REPEAT); |
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121 |
|
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// Workaround to avoid the unwanted gradient effect (#14017) |
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cairo_pattern_set_filter(pattern, CAIRO_FILTER_NEAREST); |
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124 |
|
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cairo_matrix_t pattern_matrix = cairo_matrix_t(patternTransform); |
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cairo_matrix_t phase_matrix = {1, 0, 0, 1, phase.x(), phase.y()}; |
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cairo_matrix_t combined; |
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cairo_matrix_multiply(&combined, &pattern_matrix, &phase_matrix); |
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cairo_matrix_invert(&combined); |
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cairo_pattern_set_matrix(pattern, &combined); |
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131 |
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context->setCompositeOperation(op); |
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cairo_set_source(cr, pattern); |
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cairo_rectangle(cr, destRect.x(), destRect.y(), destRect.width(), destRect.height()); |
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cairo_fill(cr); |
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136 |
|
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cairo_pattern_destroy(pattern); |
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context->restore(); |
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} |
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|
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void BitmapImage::checkForSolidColor() |
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{ |
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// FIXME: It's easy to implement this optimization. Just need to check the RGBA32 buffer to see if it is 1x1. |
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m_isSolidColor = false; |
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} |
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} |
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#endif // PLATFORM(CAIRO) |