From 2bde8e466a4451c7319e3a072d118917957d6554 Mon Sep 17 00:00:00 2001
From: Steve Block <steveblock@google.com>
Date: Wed, 25 May 2011 19:08:45 +0100
Subject: Merge WebKit at r82507: Initial merge by git

Change-Id: I60ce9d780725b58b45e54165733a8ffee23b683e
---
 Source/WebKit2/Shared/cg/ShareableBitmapCG.cpp | 44 +++++++++++++++++++++++---
 1 file changed, 40 insertions(+), 4 deletions(-)

(limited to 'Source/WebKit2/Shared/cg/ShareableBitmapCG.cpp')

diff --git a/Source/WebKit2/Shared/cg/ShareableBitmapCG.cpp b/Source/WebKit2/Shared/cg/ShareableBitmapCG.cpp
index 28ba7ea..6bcc108 100644
--- a/Source/WebKit2/Shared/cg/ShareableBitmapCG.cpp
+++ b/Source/WebKit2/Shared/cg/ShareableBitmapCG.cpp
@@ -34,14 +34,26 @@ using namespace WebCore;
 
 namespace WebKit {
 
+static CGBitmapInfo bitmapInfo(ShareableBitmap::Flags flags)
+{
+    CGBitmapInfo info = kCGBitmapByteOrder32Host;
+    if (flags & ShareableBitmap::SupportsAlpha)
+        info |= kCGImageAlphaPremultipliedFirst;
+    else
+        info |= kCGImageAlphaNoneSkipFirst;
+
+    return info;
+}
+
 PassOwnPtr<GraphicsContext> ShareableBitmap::createGraphicsContext()
 {
     RetainPtr<CGColorSpaceRef> colorSpace(AdoptCF, CGColorSpaceCreateDeviceRGB());
 
-    ref(); // Balanced by deref in releaseData.
+
+    ref(); // Balanced by deref in releaseBitmapContextData.
     RetainPtr<CGContextRef> bitmapContext(AdoptCF, CGBitmapContextCreateWithData(data(),
         m_size.width(), m_size.height(), 8, m_size.width() * 4, colorSpace.get(),
-        kCGImageAlphaPremultipliedFirst | kCGBitmapByteOrder32Host, releaseData, this));
+        bitmapInfo(m_flags), releaseBitmapContextData, this));
 
     // We want the origin to be in the top left corner so we flip the backing store context.
     CGContextTranslateCTM(bitmapContext.get(), 0, m_size.height());
@@ -52,14 +64,38 @@ PassOwnPtr<GraphicsContext> ShareableBitmap::createGraphicsContext()
 
 void ShareableBitmap::paint(WebCore::GraphicsContext& context, const IntPoint& dstPoint, const IntRect& srcRect)
 {
-    paintBitmapContext(context.platformContext(), createGraphicsContext()->platformContext(), dstPoint, srcRect);
+    paintImage(context.platformContext(), makeCGImageCopy().get(), dstPoint, srcRect);
+}
+
+RetainPtr<CGImageRef> ShareableBitmap::makeCGImageCopy()
+{
+    OwnPtr<GraphicsContext> graphicsContext = createGraphicsContext();
+    RetainPtr<CGImageRef> image(AdoptCF, CGBitmapContextCreateImage(graphicsContext->platformContext()));
+    return image;
+}
+
+RetainPtr<CGImageRef> ShareableBitmap::makeCGImage()
+{
+    ref(); // Balanced by deref in releaseDataProviderData.
+    RetainPtr<CGDataProvider> dataProvider(AdoptCF, CGDataProviderCreateWithData(this, data(), sizeInBytes(), releaseDataProviderData));
+
+    RetainPtr<CGColorSpaceRef> colorSpace(AdoptCF, CGColorSpaceCreateDeviceRGB());
+    RetainPtr<CGImageRef> image(AdoptCF, CGImageCreate(m_size.width(), m_size.height(), 8, 32, m_size.width() * 4, colorSpace.get(), bitmapInfo(m_flags), dataProvider.get(), 0, false, kCGRenderingIntentDefault));
+    return image;
 }
 
-void ShareableBitmap::releaseData(void* typelessBitmap, void* typelessData)
+void ShareableBitmap::releaseBitmapContextData(void* typelessBitmap, void* typelessData)
 {
     ShareableBitmap* bitmap = static_cast<ShareableBitmap*>(typelessBitmap);
     ASSERT_UNUSED(typelessData, bitmap->data() == typelessData);
     bitmap->deref(); // Balanced by ref in createGraphicsContext.
 }
 
+void ShareableBitmap::releaseDataProviderData(void* typelessBitmap, const void* typelessData, size_t)
+{
+    ShareableBitmap* bitmap = static_cast<ShareableBitmap*>(typelessBitmap);
+    ASSERT_UNUSED(typelessData, bitmap->data() == typelessData);
+    bitmap->deref(); // Balanced by ref in createCGImage.
+}
+
 } // namespace WebKit
-- 
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