external/webkit r30707

1 files changed, 89 insertions, 0 deletions

diff --git a/WebCore/platform/graphics/win/ImageCairoWin.cpp b/WebCore/platform/graphics/win/ImageCairoWin.cpp
new file mode 100644
index 0000000..95bb7bc
--- /dev/null
+++ b/WebCore/platform/graphics/win/ImageCairoWin.cpp
@@ -0,0 +1,89 @@
+/*
+ * Copyright (C) 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 "Image.h"
+#include "BitmapImage.h"
+#include "GraphicsContext.h"
+#include <cairo.h>
+
+#include <windows.h>
+#include "PlatformString.h"
+
+namespace WebCore {
+
+bool BitmapImage::getHBITMAPOfSize(HBITMAP bmp, LPSIZE size)
+{
+    ASSERT(bmp);
+
+    BITMAP bmpInfo;
+    GetObject(bmp, sizeof(BITMAP), &bmpInfo);
+
+    // If this is a 32bpp bitmap, which it always should be, we'll clear it so alpha-wise it will be visible
+    if (bmpInfo.bmBitsPixel == 32) {
+        int bufferSize = bmpInfo.bmWidthBytes * bmpInfo.bmHeight;
+        memset(bmpInfo.bmBits, 255, bufferSize);
+    }
+
+    HDC tempDC = CreateCompatibleDC(0);
+    if (!tempDC) {
+        LOG_ERROR("Failed to create in-memory DC for Image::blit()");
+        return false;
+    }
+    SelectObject(tempDC, bmp);
+    GraphicsContext gc(tempDC);
+
+    IntSize imageSize = BitmapImage::size();
+    if (size)
+        drawFrameMatchingSourceSize(&gc, FloatRect(0.0f, 0.0f, bmpInfo.bmWidth, bmpInfo.bmHeight), IntSize(*size), CompositeCopy);
+    else
+        draw(&gc, FloatRect(0.0f, 0.0f, bmpInfo.bmWidth, bmpInfo.bmHeight), FloatRect(0.0f, 0.0f, imageSize.width(), imageSize.height()), CompositeCopy);
+
+    // Do cleanup
+    DeleteDC(tempDC);
+
+    return true;
+}
+
+void BitmapImage::drawFrameMatchingSourceSize(GraphicsContext* ctxt, const FloatRect& dstRect, const IntSize& srcSize, CompositeOperator compositeOp)
+{
+    int frames = frameCount();
+    for (int i = 0; i < frames; ++i) {
+        cairo_surface_t* image = frameAtIndex(i);
+        if (cairo_image_surface_get_height(image) == static_cast<size_t>(srcSize.height()) && cairo_image_surface_get_width(image) == static_cast<size_t>(srcSize.width())) {
+            size_t currentFrame = m_currentFrame;
+            m_currentFrame = i;
+            draw(ctxt, dstRect, FloatRect(0.0f, 0.0f, srcSize.width(), srcSize.height()), compositeOp);
+            m_currentFrame = currentFrame;
+            return;
+        }
+    }
+
+    // No image of the correct size was found, fallback to drawing the current frame
+    IntSize imageSize = BitmapImage::size();
+    draw(ctxt, dstRect, FloatRect(0.0f, 0.0f, imageSize.width(), imageSize.height()), compositeOp);
+}
+
+} // namespace WebCore