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Diffstat (limited to 'WebCore/platform/graphics/cg/ImageCG.cpp')
| -rw-r--r-- | WebCore/platform/graphics/cg/ImageCG.cpp | 350 |
1 files changed, 0 insertions, 350 deletions
diff --git a/WebCore/platform/graphics/cg/ImageCG.cpp b/WebCore/platform/graphics/cg/ImageCG.cpp deleted file mode 100644 index c7ed0c8..0000000 --- a/WebCore/platform/graphics/cg/ImageCG.cpp +++ /dev/null @@ -1,350 +0,0 @@ -/* - * Copyright (C) 2004, 2005, 2006 Apple Inc. 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 "BitmapImage.h" - -#if PLATFORM(CG) - -#include "AffineTransform.h" -#include "FloatConversion.h" -#include "FloatRect.h" -#include "GraphicsContextCG.h" -#include "ImageObserver.h" -#include "PDFDocumentImage.h" -#include "PlatformString.h" -#include <ApplicationServices/ApplicationServices.h> -#include <wtf/RetainPtr.h> - -#if PLATFORM(MAC) || PLATFORM(CHROMIUM) -#include "WebCoreSystemInterface.h" -#endif - -#if PLATFORM(WIN) -#include <WebKitSystemInterface/WebKitSystemInterface.h> -#endif - -namespace WebCore { - -bool FrameData::clear(bool clearMetadata) -{ - if (clearMetadata) - m_haveMetadata = false; - - if (m_frame) { - CGImageRelease(m_frame); - m_frame = 0; - return true; - } - return false; -} - -// ================================================ -// Image Class -// ================================================ - -BitmapImage::BitmapImage(CGImageRef cgImage, ImageObserver* observer) - : Image(observer) - , m_currentFrame(0) - , m_frames(0) - , m_frameTimer(0) - , m_repetitionCount(cAnimationNone) - , m_repetitionCountStatus(Unknown) - , m_repetitionsComplete(0) - , m_isSolidColor(false) - , m_checkedForSolidColor(false) - , m_animationFinished(true) - , m_allDataReceived(true) - , m_haveSize(true) - , m_sizeAvailable(true) - , m_decodedSize(0) - , m_haveFrameCount(true) - , m_frameCount(1) -{ - initPlatformData(); - - CGFloat width = CGImageGetWidth(cgImage); - CGFloat height = CGImageGetHeight(cgImage); - m_decodedSize = width * height * 4; - m_size = IntSize(width, height); - - m_frames.grow(1); - m_frames[0].m_frame = cgImage; - m_frames[0].m_hasAlpha = true; - m_frames[0].m_haveMetadata = true; - checkForSolidColor(); -} - -// Drawing Routines - -void BitmapImage::checkForSolidColor() -{ - m_checkedForSolidColor = true; - if (frameCount() > 1) { - m_isSolidColor = false; - return; - } - - CGImageRef image = frameAtIndex(0); - - // Currently we only check for solid color in the important special case of a 1x1 image. - if (image && CGImageGetWidth(image) == 1 && CGImageGetHeight(image) == 1) { - unsigned char pixel[4]; // RGBA - static CGColorSpaceRef space = CGColorSpaceCreateDeviceRGB(); - RetainPtr<CGContextRef> bmap(AdoptCF, CGBitmapContextCreate(pixel, 1, 1, 8, sizeof(pixel), space, - kCGImageAlphaPremultipliedLast | kCGBitmapByteOrder32Big)); - if (!bmap) - return; - GraphicsContext(bmap.get()).setCompositeOperation(CompositeCopy); - CGRect dst = { {0, 0}, {1, 1} }; - CGContextDrawImage(bmap.get(), dst, image); - if (pixel[3] == 0) - m_solidColor = Color(0, 0, 0, 0); - else - m_solidColor = Color(pixel[0] * 255 / pixel[3], pixel[1] * 255 / pixel[3], pixel[2] * 255 / pixel[3], pixel[3]); - m_isSolidColor = true; - } -} - -static RetainPtr<CGImageRef> imageWithColorSpace(CGImageRef originalImage, ColorSpace colorSpace) -{ - CGColorSpaceRef originalColorSpace = CGImageGetColorSpace(originalImage); - - // If the image already has a (non-device) color space, we don't want to - // override it, so return. - if (!originalColorSpace || !CFEqual(originalColorSpace, deviceRGBColorSpaceRef())) - return originalImage; - - switch (colorSpace) { - case ColorSpaceDeviceRGB: - return originalImage; - case ColorSpaceSRGB: - return RetainPtr<CGImageRef>(AdoptCF, CGImageCreateCopyWithColorSpace(originalImage, sRGBColorSpaceRef())); - case ColorSpaceLinearRGB: - return RetainPtr<CGImageRef>(AdoptCF, CGImageCreateCopyWithColorSpace(originalImage, linearRGBColorSpaceRef())); - } - - ASSERT_NOT_REACHED(); - return originalImage; -} - -CGImageRef BitmapImage::getCGImageRef() -{ - return frameAtIndex(0); -} - -void BitmapImage::draw(GraphicsContext* ctxt, const FloatRect& destRect, const FloatRect& srcRect, ColorSpace styleColorSpace, CompositeOperator compositeOp) -{ - startAnimation(); - - RetainPtr<CGImageRef> image = frameAtIndex(m_currentFrame); - if (!image) // If it's too early we won't have an image yet. - return; - - if (mayFillWithSolidColor()) { - fillWithSolidColor(ctxt, destRect, solidColor(), styleColorSpace, compositeOp); - return; - } - - float currHeight = CGImageGetHeight(image.get()); - if (currHeight <= srcRect.y()) - return; - - CGContextRef context = ctxt->platformContext(); - ctxt->save(); - - bool shouldUseSubimage = false; - - // If the source rect is a subportion of the image, then we compute an inflated destination rect that will hold the entire image - // and then set a clip to the portion that we want to display. - FloatRect adjustedDestRect = destRect; - FloatSize selfSize = currentFrameSize(); - if (srcRect.size() != selfSize) { - CGInterpolationQuality interpolationQuality = CGContextGetInterpolationQuality(context); - // When the image is scaled using high-quality interpolation, we create a temporary CGImage - // containing only the portion we want to display. We need to do this because high-quality - // interpolation smoothes sharp edges, causing pixels from outside the source rect to bleed - // into the destination rect. See <rdar://problem/6112909>. - shouldUseSubimage = (interpolationQuality == kCGInterpolationHigh || interpolationQuality == kCGInterpolationDefault) && (srcRect.size() != destRect.size() || !ctxt->getCTM().isIdentityOrTranslationOrFlipped()); - float xScale = srcRect.width() / destRect.width(); - float yScale = srcRect.height() / destRect.height(); - if (shouldUseSubimage) { - FloatRect subimageRect = srcRect; - float leftPadding = srcRect.x() - floorf(srcRect.x()); - float topPadding = srcRect.y() - floorf(srcRect.y()); - - subimageRect.move(-leftPadding, -topPadding); - adjustedDestRect.move(-leftPadding / xScale, -topPadding / yScale); - - subimageRect.setWidth(ceilf(subimageRect.width() + leftPadding)); - adjustedDestRect.setWidth(subimageRect.width() / xScale); - - subimageRect.setHeight(ceilf(subimageRect.height() + topPadding)); - adjustedDestRect.setHeight(subimageRect.height() / yScale); - - image.adoptCF(CGImageCreateWithImageInRect(image.get(), subimageRect)); - if (currHeight < srcRect.bottom()) { - ASSERT(CGImageGetHeight(image.get()) == currHeight - CGRectIntegral(srcRect).origin.y); - adjustedDestRect.setHeight(CGImageGetHeight(image.get()) / yScale); - } - } else { - adjustedDestRect.setLocation(FloatPoint(destRect.x() - srcRect.x() / xScale, destRect.y() - srcRect.y() / yScale)); - adjustedDestRect.setSize(FloatSize(selfSize.width() / xScale, selfSize.height() / yScale)); - } - - CGContextClipToRect(context, destRect); - } - - // If the image is only partially loaded, then shrink the destination rect that we're drawing into accordingly. - if (!shouldUseSubimage && currHeight < selfSize.height()) - adjustedDestRect.setHeight(adjustedDestRect.height() * currHeight / selfSize.height()); - - ctxt->setCompositeOperation(compositeOp); - - // Flip the coords. - CGContextScaleCTM(context, 1, -1); - adjustedDestRect.setY(-adjustedDestRect.bottom()); - - // Adjust the color space. - image = imageWithColorSpace(image.get(), styleColorSpace); - - // Draw the image. - CGContextDrawImage(context, adjustedDestRect, image.get()); - - ctxt->restore(); - - if (imageObserver()) - imageObserver()->didDraw(this); -} - -static void drawPatternCallback(void* info, CGContextRef context) -{ - CGImageRef image = (CGImageRef)info; - CGContextDrawImage(context, GraphicsContext(context).roundToDevicePixels(FloatRect(0, 0, CGImageGetWidth(image), CGImageGetHeight(image))), image); -} - -void Image::drawPattern(GraphicsContext* ctxt, const FloatRect& tileRect, const AffineTransform& patternTransform, - const FloatPoint& phase, ColorSpace styleColorSpace, CompositeOperator op, const FloatRect& destRect) -{ - if (!nativeImageForCurrentFrame()) - return; - - ASSERT(patternTransform.isInvertible()); - if (!patternTransform.isInvertible()) - // Avoid a hang under CGContextDrawTiledImage on release builds. - return; - - CGContextRef context = ctxt->platformContext(); - ctxt->save(); - CGContextClipToRect(context, destRect); - ctxt->setCompositeOperation(op); - CGContextTranslateCTM(context, destRect.x(), destRect.y() + destRect.height()); - CGContextScaleCTM(context, 1, -1); - - // Compute the scaled tile size. - float scaledTileHeight = tileRect.height() * narrowPrecisionToFloat(patternTransform.d()); - - // We have to adjust the phase to deal with the fact we're in Cartesian space now (with the bottom left corner of destRect being - // the origin). - float adjustedX = phase.x() - destRect.x() + tileRect.x() * narrowPrecisionToFloat(patternTransform.a()); // We translated the context so that destRect.x() is the origin, so subtract it out. - float adjustedY = destRect.height() - (phase.y() - destRect.y() + tileRect.y() * narrowPrecisionToFloat(patternTransform.d()) + scaledTileHeight); - - CGImageRef tileImage = nativeImageForCurrentFrame(); - float h = CGImageGetHeight(tileImage); - - RetainPtr<CGImageRef> subImage; - if (tileRect.size() == size()) - subImage = tileImage; - else { - // Copying a sub-image out of a partially-decoded image stops the decoding of the original image. It should never happen - // because sub-images are only used for border-image, which only renders when the image is fully decoded. - ASSERT(h == height()); - subImage.adoptCF(CGImageCreateWithImageInRect(tileImage, tileRect)); - } - - // Adjust the color space. - subImage = imageWithColorSpace(subImage.get(), styleColorSpace); - -#ifndef BUILDING_ON_TIGER - // Leopard has an optimized call for the tiling of image patterns, but we can only use it if the image has been decoded enough that - // its buffer is the same size as the overall image. Because a partially decoded CGImageRef with a smaller width or height than the - // overall image buffer needs to tile with "gaps", we can't use the optimized tiling call in that case. - // FIXME: Could create WebKitSystemInterface SPI for CGCreatePatternWithImage2 and probably make Tiger tile faster as well. - // FIXME: We cannot use CGContextDrawTiledImage with scaled tiles on Leopard, because it suffers from rounding errors. Snow Leopard is ok. - float scaledTileWidth = tileRect.width() * narrowPrecisionToFloat(patternTransform.a()); - float w = CGImageGetWidth(tileImage); -#ifdef BUILDING_ON_LEOPARD - if (w == size().width() && h == size().height() && scaledTileWidth == tileRect.width() && scaledTileHeight == tileRect.height()) -#else - if (w == size().width() && h == size().height()) -#endif - CGContextDrawTiledImage(context, FloatRect(adjustedX, adjustedY, scaledTileWidth, scaledTileHeight), subImage.get()); - else { -#endif - - // On Leopard, this code now only runs for partially decoded images whose buffers do not yet match the overall size of the image. - // On Tiger this code runs all the time. This code is suboptimal because the pattern does not reference the image directly, and the - // pattern is destroyed before exiting the function. This means any decoding the pattern does doesn't end up cached anywhere, so we - // redecode every time we paint. - static const CGPatternCallbacks patternCallbacks = { 0, drawPatternCallback, NULL }; - CGAffineTransform matrix = CGAffineTransformMake(narrowPrecisionToCGFloat(patternTransform.a()), 0, 0, narrowPrecisionToCGFloat(patternTransform.d()), adjustedX, adjustedY); - matrix = CGAffineTransformConcat(matrix, CGContextGetCTM(context)); - // The top of a partially-decoded image is drawn at the bottom of the tile. Map it to the top. - matrix = CGAffineTransformTranslate(matrix, 0, size().height() - h); - RetainPtr<CGPatternRef> pattern(AdoptCF, CGPatternCreate(subImage.get(), CGRectMake(0, 0, tileRect.width(), tileRect.height()), - matrix, tileRect.width(), tileRect.height(), - kCGPatternTilingConstantSpacing, true, &patternCallbacks)); - if (!pattern) { - ctxt->restore(); - return; - } - - RetainPtr<CGColorSpaceRef> patternSpace(AdoptCF, CGColorSpaceCreatePattern(0)); - - CGFloat alpha = 1; - RetainPtr<CGColorRef> color(AdoptCF, CGColorCreateWithPattern(patternSpace.get(), pattern.get(), &alpha)); - CGContextSetFillColorSpace(context, patternSpace.get()); - - // FIXME: Really want a public API for this. It is just CGContextSetBaseCTM(context, CGAffineTransformIdentiy). - wkSetPatternBaseCTM(context, CGAffineTransformIdentity); - CGContextSetPatternPhase(context, CGSizeZero); - - CGContextSetFillColorWithColor(context, color.get()); - CGContextFillRect(context, CGContextGetClipBoundingBox(context)); - -#ifndef BUILDING_ON_TIGER - } -#endif - - ctxt->restore(); - - if (imageObserver()) - imageObserver()->didDraw(this); -} - - -} - -#endif // PLATFORM(CG) |