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Diffstat (limited to 'WebCore/platform/graphics/cairo/ImageBufferCairo.cpp')
| -rw-r--r-- | WebCore/platform/graphics/cairo/ImageBufferCairo.cpp | 319 |
1 files changed, 0 insertions, 319 deletions
diff --git a/WebCore/platform/graphics/cairo/ImageBufferCairo.cpp b/WebCore/platform/graphics/cairo/ImageBufferCairo.cpp deleted file mode 100644 index b353943..0000000 --- a/WebCore/platform/graphics/cairo/ImageBufferCairo.cpp +++ /dev/null @@ -1,319 +0,0 @@ -/* - * Copyright (C) 2006 Nikolas Zimmermann <zimmermann@kde.org> - * Copyright (C) 2007 Holger Hans Peter Freyther <zecke@selfish.org> - * Copyright (C) 2008, 2009 Dirk Schulze <krit@webkit.org> - * Copyright (C) 2010 Torch Mobile (Beijing) Co. Ltd. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY - * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR - * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY - * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#include "config.h" -#include "ImageBuffer.h" - -#include "Base64.h" -#include "BitmapImage.h" -#include "Color.h" -#include "GraphicsContext.h" -#include "ImageData.h" -#include "MIMETypeRegistry.h" -#include "NotImplemented.h" -#include "Pattern.h" -#include "PlatformString.h" -#include <cairo.h> -#include <wtf/Vector.h> - -using namespace std; - -// Cairo doesn't provide a way to copy a cairo_surface_t. -// See http://lists.cairographics.org/archives/cairo/2007-June/010877.html -// Once cairo provides the way, use the function instead of this. -static inline cairo_surface_t* copySurface(cairo_surface_t* surface) -{ - cairo_format_t format = cairo_image_surface_get_format(surface); - int width = cairo_image_surface_get_width(surface); - int height = cairo_image_surface_get_height(surface); - cairo_surface_t* newsurface = cairo_image_surface_create(format, width, height); - - cairo_t* cr = cairo_create(newsurface); - cairo_set_source_surface(cr, surface, 0, 0); - cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE); - cairo_paint(cr); - cairo_destroy(cr); - - return newsurface; -} - -namespace WebCore { - -ImageBufferData::ImageBufferData(const IntSize& size) - : m_surface(0) -{ -} - -ImageBuffer::ImageBuffer(const IntSize& size, ColorSpace, RenderingMode, bool& success) - : m_data(size) - , m_size(size) -{ - success = false; // Make early return mean error. - m_data.m_surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, - size.width(), - size.height()); - if (cairo_surface_status(m_data.m_surface) != CAIRO_STATUS_SUCCESS) - return; // create will notice we didn't set m_initialized and fail. - - cairo_t* cr = cairo_create(m_data.m_surface); - m_context.set(new GraphicsContext(cr)); - cairo_destroy(cr); // The context is now owned by the GraphicsContext. - success = true; -} - -ImageBuffer::~ImageBuffer() -{ - cairo_surface_destroy(m_data.m_surface); -} - -GraphicsContext* ImageBuffer::context() const -{ - return m_context.get(); -} - -bool ImageBuffer::drawsUsingCopy() const -{ - return false; -} - -PassRefPtr<Image> ImageBuffer::copyImage() const -{ - // BitmapImage will release the passed in surface on destruction - return BitmapImage::create(copySurface(m_data.m_surface)); -} - -void ImageBuffer::clip(GraphicsContext*, const FloatRect&) const -{ - notImplemented(); - // See https://bugs.webkit.org/show_bug.cgi?id=23526 for why this is unimplemented. -} - -void ImageBuffer::draw(GraphicsContext* context, ColorSpace styleColorSpace, const FloatRect& destRect, const FloatRect& srcRect, - CompositeOperator op , bool useLowQualityScale) -{ - // BitmapImage will release the passed in surface on destruction - RefPtr<Image> image = BitmapImage::create(cairo_surface_reference(m_data.m_surface)); - context->drawImage(image.get(), styleColorSpace, destRect, srcRect, op, useLowQualityScale); -} - -void ImageBuffer::drawPattern(GraphicsContext* context, const FloatRect& srcRect, const AffineTransform& patternTransform, - const FloatPoint& phase, ColorSpace styleColorSpace, CompositeOperator op, const FloatRect& destRect) -{ - // BitmapImage will release the passed in surface on destruction - RefPtr<Image> image = BitmapImage::create(cairo_surface_reference(m_data.m_surface)); - image->drawPattern(context, srcRect, patternTransform, phase, styleColorSpace, op, destRect); -} - -void ImageBuffer::platformTransformColorSpace(const Vector<int>& lookUpTable) -{ - ASSERT(cairo_surface_get_type(m_data.m_surface) == CAIRO_SURFACE_TYPE_IMAGE); - - unsigned char* dataSrc = cairo_image_surface_get_data(m_data.m_surface); - int stride = cairo_image_surface_get_stride(m_data.m_surface); - for (int y = 0; y < m_size.height(); ++y) { - unsigned* row = reinterpret_cast<unsigned*>(dataSrc + stride * y); - for (int x = 0; x < m_size.width(); x++) { - unsigned* pixel = row + x; - Color pixelColor = colorFromPremultipliedARGB(*pixel); - pixelColor = Color(lookUpTable[pixelColor.red()], - lookUpTable[pixelColor.green()], - lookUpTable[pixelColor.blue()], - pixelColor.alpha()); - *pixel = premultipliedARGBFromColor(pixelColor); - } - } - cairo_surface_mark_dirty_rectangle (m_data.m_surface, 0, 0, m_size.width(), m_size.height()); -} - -template <Multiply multiplied> -PassRefPtr<ImageData> getImageData(const IntRect& rect, const ImageBufferData& data, const IntSize& size) -{ - ASSERT(cairo_surface_get_type(data.m_surface) == CAIRO_SURFACE_TYPE_IMAGE); - - PassRefPtr<ImageData> result = ImageData::create(rect.width(), rect.height()); - unsigned char* dataSrc = cairo_image_surface_get_data(data.m_surface); - unsigned char* dataDst = result->data()->data()->data(); - - if (rect.x() < 0 || rect.y() < 0 || (rect.x() + rect.width()) > size.width() || (rect.y() + rect.height()) > size.height()) - memset(dataDst, 0, result->data()->length()); - - int originx = rect.x(); - int destx = 0; - if (originx < 0) { - destx = -originx; - originx = 0; - } - int endx = rect.x() + rect.width(); - if (endx > size.width()) - endx = size.width(); - int numColumns = endx - originx; - - int originy = rect.y(); - int desty = 0; - if (originy < 0) { - desty = -originy; - originy = 0; - } - int endy = rect.y() + rect.height(); - if (endy > size.height()) - endy = size.height(); - int numRows = endy - originy; - - int stride = cairo_image_surface_get_stride(data.m_surface); - unsigned destBytesPerRow = 4 * rect.width(); - - unsigned char* destRows = dataDst + desty * destBytesPerRow + destx * 4; - for (int y = 0; y < numRows; ++y) { - unsigned* row = reinterpret_cast<unsigned*>(dataSrc + stride * (y + originy)); - for (int x = 0; x < numColumns; x++) { - int basex = x * 4; - unsigned* pixel = row + x + originx; - Color pixelColor; - if (multiplied == Unmultiplied) - pixelColor = colorFromPremultipliedARGB(*pixel); - else - pixelColor = Color(*pixel); - destRows[basex] = pixelColor.red(); - destRows[basex + 1] = pixelColor.green(); - destRows[basex + 2] = pixelColor.blue(); - destRows[basex + 3] = pixelColor.alpha(); - } - destRows += destBytesPerRow; - } - - return result; -} - -PassRefPtr<ImageData> ImageBuffer::getUnmultipliedImageData(const IntRect& rect) const -{ - return getImageData<Unmultiplied>(rect, m_data, m_size); -} - -PassRefPtr<ImageData> ImageBuffer::getPremultipliedImageData(const IntRect& rect) const -{ - return getImageData<Premultiplied>(rect, m_data, m_size); -} - -template <Multiply multiplied> -void putImageData(ImageData*& source, const IntRect& sourceRect, const IntPoint& destPoint, ImageBufferData& data, const IntSize& size) -{ - ASSERT(cairo_surface_get_type(data.m_surface) == CAIRO_SURFACE_TYPE_IMAGE); - - unsigned char* dataDst = cairo_image_surface_get_data(data.m_surface); - - ASSERT(sourceRect.width() > 0); - ASSERT(sourceRect.height() > 0); - - int originx = sourceRect.x(); - int destx = destPoint.x() + sourceRect.x(); - ASSERT(destx >= 0); - ASSERT(destx < size.width()); - ASSERT(originx >= 0); - ASSERT(originx <= sourceRect.right()); - - int endx = destPoint.x() + sourceRect.right(); - ASSERT(endx <= size.width()); - - int numColumns = endx - destx; - - int originy = sourceRect.y(); - int desty = destPoint.y() + sourceRect.y(); - ASSERT(desty >= 0); - ASSERT(desty < size.height()); - ASSERT(originy >= 0); - ASSERT(originy <= sourceRect.bottom()); - - int endy = destPoint.y() + sourceRect.bottom(); - ASSERT(endy <= size.height()); - int numRows = endy - desty; - - unsigned srcBytesPerRow = 4 * source->width(); - int stride = cairo_image_surface_get_stride(data.m_surface); - - unsigned char* srcRows = source->data()->data()->data() + originy * srcBytesPerRow + originx * 4; - for (int y = 0; y < numRows; ++y) { - unsigned* row = reinterpret_cast<unsigned*>(dataDst + stride * (y + desty)); - for (int x = 0; x < numColumns; x++) { - int basex = x * 4; - unsigned* pixel = row + x + destx; - Color pixelColor(srcRows[basex], - srcRows[basex + 1], - srcRows[basex + 2], - srcRows[basex + 3]); - if (multiplied == Unmultiplied) - *pixel = premultipliedARGBFromColor(pixelColor); - else - *pixel = pixelColor.rgb(); - } - srcRows += srcBytesPerRow; - } - cairo_surface_mark_dirty_rectangle (data.m_surface, - destx, desty, - numColumns, numRows); -} - -void ImageBuffer::putUnmultipliedImageData(ImageData* source, const IntRect& sourceRect, const IntPoint& destPoint) -{ - putImageData<Unmultiplied>(source, sourceRect, destPoint, m_data, m_size); -} - -void ImageBuffer::putPremultipliedImageData(ImageData* source, const IntRect& sourceRect, const IntPoint& destPoint) -{ - putImageData<Premultiplied>(source, sourceRect, destPoint, m_data, m_size); -} - -#if !PLATFORM(GTK) -static cairo_status_t writeFunction(void* closure, const unsigned char* data, unsigned int length) -{ - Vector<char>* in = reinterpret_cast<Vector<char>*>(closure); - in->append(data, length); - return CAIRO_STATUS_SUCCESS; -} - -String ImageBuffer::toDataURL(const String& mimeType, const double*) const -{ - cairo_surface_t* image = cairo_get_target(context()->platformContext()); - if (!image) - return "data:,"; - - String actualMimeType("image/png"); - if (MIMETypeRegistry::isSupportedImageMIMETypeForEncoding(mimeType)) - actualMimeType = mimeType; - - Vector<char> in; - // Only PNG output is supported for now. - cairo_surface_write_to_png_stream(image, writeFunction, &in); - - Vector<char> out; - base64Encode(in, out); - - return "data:" + actualMimeType + ";base64," + String(out.data(), out.size()); -} -#endif - -} // namespace WebCore |