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* Copyright (C) 2006 Nikolas Zimmermann <zimmermann@kde.org>
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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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* 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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* 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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#include "ImageBuffer.h"
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#include "GraphicsContext.h"
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#include <ApplicationServices/ApplicationServices.h>
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#include <wtf/Assertions.h>
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auto_ptr<ImageBuffer> ImageBuffer::create(const IntSize& size, bool grayScale)
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unsigned int bytesPerRow = size.width();
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void* imageBuffer = fastCalloc(size.height(), bytesPerRow);
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return auto_ptr<ImageBuffer>();
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CGColorSpaceRef colorSpace = grayScale ? CGColorSpaceCreateDeviceGray() : CGColorSpaceCreateDeviceRGB();
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CGContextRef cgContext = CGBitmapContextCreate(imageBuffer, size.width(), size.height(), 8, bytesPerRow,
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colorSpace, grayScale ? kCGImageAlphaNone : kCGImageAlphaPremultipliedLast);
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CGColorSpaceRelease(colorSpace);
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return auto_ptr<ImageBuffer>();
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auto_ptr<GraphicsContext> context(new GraphicsContext(cgContext));
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CGContextRelease(cgContext);
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return auto_ptr<ImageBuffer>(new ImageBuffer(imageBuffer, size, context));
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ImageBuffer::ImageBuffer(void* imageData, const IntSize& size, auto_ptr<GraphicsContext> context)
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, m_context(context.release())
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ImageBuffer::~ImageBuffer()
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CGImageRelease(m_cgImage);
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GraphicsContext* ImageBuffer::context() const
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return m_context.get();
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CGImageRef ImageBuffer::cgImage() const
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// It's assumed that if cgImage() is called, the actual rendering to the
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// contained GraphicsContext must be done, as we create the CGImageRef here.
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m_cgImage = CGBitmapContextCreateImage(context()->platformContext());