Merge WebKit at r75315: Initial merge by git.

Change-Id: I570314b346ce101c935ed22a626b48c2af266b84

1 files changed, 200 insertions, 0 deletions

diff --git a/Source/WebCore/platform/graphics/win/GraphicsContextWin.cpp b/Source/WebCore/platform/graphics/win/GraphicsContextWin.cpp
new file mode 100644
index 0000000..f1953e4
--- /dev/null
+++ b/Source/WebCore/platform/graphics/win/GraphicsContextWin.cpp
@@ -0,0 +1,200 @@
+/*
+ * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008 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 "GraphicsContext.h"
+
+#if PLATFORM(CG)
+#include "GraphicsContextPlatformPrivateCG.h"
+#elif PLATFORM(CAIRO)
+#include "GraphicsContextPlatformPrivateCairo.h"
+#endif
+
+#include "AffineTransform.h"
+#include "BitmapInfo.h"
+#include "TransformationMatrix.h"
+#include "NotImplemented.h"
+#include "Path.h"
+#include <wtf/MathExtras.h>
+
+using namespace std;
+
+namespace WebCore {
+
+static void fillWithClearColor(HBITMAP bitmap)
+{
+    BITMAP bmpInfo;
+    GetObject(bitmap, sizeof(bmpInfo), &bmpInfo);
+    int bufferSize = bmpInfo.bmWidthBytes * bmpInfo.bmHeight;
+    memset(bmpInfo.bmBits, 0, bufferSize);
+}
+
+bool GraphicsContext::inTransparencyLayer() const { return m_data->m_transparencyCount; }
+
+void GraphicsContext::setShouldIncludeChildWindows(bool include)
+{
+    m_data->m_shouldIncludeChildWindows = include;
+}
+
+bool GraphicsContext::shouldIncludeChildWindows() const
+{
+    return m_data->m_shouldIncludeChildWindows;
+}
+
+GraphicsContext::WindowsBitmap::WindowsBitmap(HDC hdc, IntSize size)
+    : m_hdc(0)
+    , m_size(size)
+{
+    BitmapInfo bitmapInfo = BitmapInfo::create(m_size);
+
+    m_bitmap = CreateDIBSection(0, &bitmapInfo, DIB_RGB_COLORS, reinterpret_cast<void**>(&m_bitmapBuffer), 0, 0);
+    if (!m_bitmap)
+        return;
+
+    m_hdc = CreateCompatibleDC(hdc);
+    SelectObject(m_hdc, m_bitmap);
+
+    BITMAP bmpInfo;
+    GetObject(m_bitmap, sizeof(bmpInfo), &bmpInfo);
+    m_bytesPerRow = bmpInfo.bmWidthBytes;
+    m_bitmapBufferLength = bmpInfo.bmWidthBytes * bmpInfo.bmHeight;
+
+    SetGraphicsMode(m_hdc, GM_ADVANCED);
+}
+
+GraphicsContext::WindowsBitmap::~WindowsBitmap()
+{
+    if (!m_bitmap)
+        return;
+
+    DeleteDC(m_hdc);
+    DeleteObject(m_bitmap);
+}
+
+GraphicsContext::WindowsBitmap* GraphicsContext::createWindowsBitmap(IntSize size)
+{
+    return new WindowsBitmap(m_data->m_hdc, size);
+}
+
+HDC GraphicsContext::getWindowsContext(const IntRect& dstRect, bool supportAlphaBlend, bool mayCreateBitmap)
+{
+    // FIXME: Should a bitmap be created also when a shadow is set?
+    if (mayCreateBitmap && (!m_data->m_hdc || inTransparencyLayer())) {
+        if (dstRect.isEmpty())
+            return 0;
+
+        // Create a bitmap DC in which to draw.
+        BitmapInfo bitmapInfo = BitmapInfo::create(dstRect.size());
+
+        void* pixels = 0;
+        HBITMAP bitmap = ::CreateDIBSection(NULL, &bitmapInfo, DIB_RGB_COLORS, &pixels, 0, 0);
+        if (!bitmap)
+            return 0;
+
+        HDC bitmapDC = ::CreateCompatibleDC(m_data->m_hdc);
+        ::SelectObject(bitmapDC, bitmap);
+
+        // Fill our buffer with clear if we're going to alpha blend.
+        if (supportAlphaBlend)
+           fillWithClearColor(bitmap);
+
+        // Make sure we can do world transforms.
+        SetGraphicsMode(bitmapDC, GM_ADVANCED);
+
+        // Apply a translation to our context so that the drawing done will be at (0,0) of the bitmap.
+        XFORM xform = TransformationMatrix().translate(-dstRect.x(), -dstRect.y());
+
+        ::SetWorldTransform(bitmapDC, &xform);
+
+        return bitmapDC;
+    }
+
+    m_data->flush();
+    m_data->save();
+    return m_data->m_hdc;
+}
+
+void GraphicsContextPlatformPrivate::save()
+{
+    if (!m_hdc)
+        return;
+    SaveDC(m_hdc);
+}
+
+void GraphicsContextPlatformPrivate::restore()
+{
+    if (!m_hdc)
+        return;
+    RestoreDC(m_hdc, -1);
+}
+
+void GraphicsContextPlatformPrivate::clip(const FloatRect& clipRect)
+{
+    if (!m_hdc)
+        return;
+    IntersectClipRect(m_hdc, clipRect.x(), clipRect.y(), clipRect.right(), clipRect.bottom());
+}
+
+void GraphicsContextPlatformPrivate::clip(const Path&)
+{
+    notImplemented();
+}
+
+void GraphicsContextPlatformPrivate::scale(const FloatSize& size)
+{
+    if (!m_hdc)
+        return;
+
+    XFORM xform = TransformationMatrix().scaleNonUniform(size.width(), size.height());
+    ModifyWorldTransform(m_hdc, &xform, MWT_LEFTMULTIPLY);
+}
+
+static const double deg2rad = 0.017453292519943295769; // pi/180
+
+void GraphicsContextPlatformPrivate::rotate(float degreesAngle)
+{
+    XFORM xform = TransformationMatrix().rotate(degreesAngle);
+    ModifyWorldTransform(m_hdc, &xform, MWT_LEFTMULTIPLY);
+}
+
+void GraphicsContextPlatformPrivate::translate(float x , float y)
+{
+    if (!m_hdc)
+        return;
+
+    XFORM xform = TransformationMatrix().translate(x, y);
+    ModifyWorldTransform(m_hdc, &xform, MWT_LEFTMULTIPLY);
+}
+
+void GraphicsContextPlatformPrivate::concatCTM(const AffineTransform& transform)
+{
+    if (!m_hdc)
+        return;
+
+    XFORM xform = transform.toTransformationMatrix();
+    ModifyWorldTransform(m_hdc, &xform, MWT_LEFTMULTIPLY);
+}
+
+}