Move DragImage from core/platform/ to platform/

Source/core/platform/DragImage.cpp

Index: Source/core/platform/DragImage.cpp
diff --git a/Source/core/platform/DragImage.cpp b/Source/core/platform/DragImage.cpp
deleted file mode 100644
index 22d3f17b0999eb83ebae1a591a5d16eaa9efe9f0..0000000000000000000000000000000000000000
--- a/Source/core/platform/DragImage.cpp
+++ /dev/null
@@ -1,267 +0,0 @@
-/*
- * Copyright (C) 2007 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 "core/platform/DragImage.h"
-
-#include "platform/fonts/Font.h"
-#include "platform/fonts/FontCache.h"
-#include "platform/fonts/FontDescription.h"
-#include "platform/fonts/FontMetrics.h"
-#include "platform/geometry/FloatPoint.h"
-#include "platform/geometry/FloatRect.h"
-#include "platform/geometry/IntPoint.h"
-#include "platform/graphics/BitmapImage.h"
-#include "platform/graphics/Color.h"
-#include "platform/graphics/GraphicsContext.h"
-#include "platform/graphics/Image.h"
-#include "platform/graphics/ImageBuffer.h"
-#include "platform/graphics/skia/NativeImageSkia.h"
-#include "platform/text/StringTruncator.h"
-#include "platform/text/TextRun.h"
-#include "platform/transforms/AffineTransform.h"
-#include "platform/weborigin/KURL.h"
-#include "skia/ext/image_operations.h"
-#include "third_party/skia/include/core/SkCanvas.h"
-#include "third_party/skia/include/core/SkMatrix.h"
-#include "wtf/PassOwnPtr.h"
-#include "wtf/RefPtr.h"
-#include "wtf/text/WTFString.h"
-
-#include <algorithm>
-
-namespace WebCore {
-
-const float kDragLabelBorderX = 4;
-// Keep border_y in synch with DragController::LinkDragBorderInset.
-const float kDragLabelBorderY = 2;
-const float kLabelBorderYOffset = 2;
-
-const float kMaxDragLabelWidth = 300;
-const float kMaxDragLabelStringWidth = (kMaxDragLabelWidth - 2 * kDragLabelBorderX);
-
-const float kDragLinkLabelFontSize = 11;
-const float kDragLinkUrlFontSize = 10;
-
-PassOwnPtr<DragImage> DragImage::create(Image* image, RespectImageOrientationEnum shouldRespectImageOrientation)
-{
-    if (!image)
-        return nullptr;
-
-    RefPtr<NativeImageSkia> bitmap = image->nativeImageForCurrentFrame();
-    if (!bitmap)
-        return nullptr;
-
-    if (image->isBitmapImage()) {
-        ImageOrientation orientation = DefaultImageOrientation;
-        BitmapImage* bitmapImage = toBitmapImage(image);
-        IntSize sizeRespectingOrientation = bitmapImage->sizeRespectingOrientation();
-
-        if (shouldRespectImageOrientation == RespectImageOrientation)
-            orientation = bitmapImage->currentFrameOrientation();
-
-        if (orientation != DefaultImageOrientation) {
-            FloatRect destRect(FloatPoint(), sizeRespectingOrientation);
-            if (orientation.usesWidthAsHeight())
-                destRect = destRect.transposedRect();
-
-            SkBitmap skBitmap;
-            skBitmap.setConfig(
-                SkBitmap::kARGB_8888_Config, sizeRespectingOrientation.width(), sizeRespectingOrientation.height());
-            if (!skBitmap.allocPixels())
-                return nullptr;
-
-            SkCanvas canvas(skBitmap);
-            canvas.concat(affineTransformToSkMatrix(orientation.transformFromDefault(sizeRespectingOrientation)));
-            canvas.drawBitmapRect(bitmap->bitmap(), 0, destRect);
-
-            return adoptPtr(new DragImage(skBitmap, bitmap->resolutionScale()));
-        }
-    }
-
-    SkBitmap skBitmap;
-    if (!bitmap->bitmap().copyTo(&skBitmap, SkBitmap::kARGB_8888_Config))
-        return nullptr;
-    return adoptPtr(new DragImage(skBitmap, bitmap->resolutionScale()));
-}
-
-static Font deriveDragLabelFont(int size, FontWeight fontWeight, const FontDescription& systemFont)
-{
-    FontDescription description = systemFont;
-    description.setWeight(fontWeight);
-    description.setSpecifiedSize(size);
-    description.setComputedSize(size);
-    Font result(description, 0, 0);
-    result.update(0);
-    return result;
-}
-
-PassOwnPtr<DragImage> DragImage::create(const KURL& url, const String& inLabel, const FontDescription& systemFont, float deviceScaleFactor)
-{
-    const Font labelFont = deriveDragLabelFont(kDragLinkLabelFontSize, FontWeightBold, systemFont);
-    const Font urlFont = deriveDragLabelFont(kDragLinkUrlFontSize, FontWeightNormal, systemFont);
-    FontCachePurgePreventer fontCachePurgePreventer;
-
-    bool drawURLString = true;
-    bool clipURLString = false;
-    bool clipLabelString = false;
-
-    String urlString = url.string();
-    String label = inLabel;
-    if (label.isEmpty()) {
-        drawURLString = false;
-        label = urlString;
-    }
-
-    // First step is drawing the link drag image width.
-    TextRun labelRun(label.impl());
-    TextRun urlRun(urlString.impl());
-    IntSize labelSize(labelFont.width(labelRun), labelFont.fontMetrics().ascent() + labelFont.fontMetrics().descent());
-
-    if (labelSize.width() > kMaxDragLabelStringWidth) {
-        labelSize.setWidth(kMaxDragLabelStringWidth);
-        clipLabelString = true;
-    }
-
-    IntSize urlStringSize;
-    IntSize imageSize(labelSize.width() + kDragLabelBorderX * 2, labelSize.height() + kDragLabelBorderY * 2);
-
-    if (drawURLString) {
-        urlStringSize.setWidth(urlFont.width(urlRun));
-        urlStringSize.setHeight(urlFont.fontMetrics().ascent() + urlFont.fontMetrics().descent());
-        imageSize.setHeight(imageSize.height() + urlStringSize.height());
-        if (urlStringSize.width() > kMaxDragLabelStringWidth) {
-            imageSize.setWidth(kMaxDragLabelWidth);
-            clipURLString = true;
-        } else
-            imageSize.setWidth(std::max(labelSize.width(), urlStringSize.width()) + kDragLabelBorderX * 2);
-    }
-
-    // We now know how big the image needs to be, so we create and
-    // fill the background
-    IntSize scaledImageSize = imageSize;
-    scaledImageSize.scale(deviceScaleFactor);
-    OwnPtr<ImageBuffer> buffer(ImageBuffer::create(scaledImageSize));
-    if (!buffer)
-        return nullptr;
-    buffer->context()->scale(FloatSize(deviceScaleFactor, deviceScaleFactor));
-
-    const float DragLabelRadius = 5;
-    const IntSize radii(DragLabelRadius, DragLabelRadius);
-    IntRect rect(IntPoint(), imageSize);
-    const Color backgroundColor(140, 140, 140);
-    buffer->context()->fillRoundedRect(rect, radii, radii, radii, radii, backgroundColor);
-
-    // Draw the text
-    if (drawURLString) {
-        if (clipURLString)
-            urlString = StringTruncator::centerTruncate(urlString, imageSize.width() - (kDragLabelBorderX * 2.0f), urlFont, StringTruncator::EnableRoundingHacks);
-        IntPoint textPos(kDragLabelBorderX, imageSize.height() - (kLabelBorderYOffset + urlFont.fontMetrics().descent()));
-        TextRun textRun(urlString);
-        buffer->context()->drawText(urlFont, TextRunPaintInfo(textRun), textPos);
-    }
-
-    if (clipLabelString)
-        label = StringTruncator::rightTruncate(label, imageSize.width() - (kDragLabelBorderX * 2.0f), labelFont, StringTruncator::EnableRoundingHacks);
-
-    IntPoint textPos(kDragLabelBorderX, kDragLabelBorderY + labelFont.pixelSize());
-    TextRun textRun(label);
-    buffer->context()->drawText(urlFont, TextRunPaintInfo(textRun), textPos);
-
-    RefPtr<Image> image = buffer->copyImage();
-    return DragImage::create(image.get());
-}
-
-DragImage::DragImage(const SkBitmap& bitmap, float resolutionScale)
-    : m_bitmap(bitmap)
-    , m_resolutionScale(resolutionScale)
-{
-}
-
-DragImage::~DragImage()
-{
-}
-
-void DragImage::fitToMaxSize(const IntSize& srcSize, const IntSize& maxSize)
-{
-    float heightResizeRatio = 0.0f;
-    float widthResizeRatio = 0.0f;
-    float resizeRatio = -1.0f;
-    IntSize originalSize = size();
-
-    if (srcSize.width() > maxSize.width()) {
-        widthResizeRatio = maxSize.width() / static_cast<float>(srcSize.width());
-        resizeRatio = widthResizeRatio;
-    }
-
-    if (srcSize.height() > maxSize.height()) {
-        heightResizeRatio = maxSize.height() / static_cast<float>(srcSize.height());
-        if ((resizeRatio < 0.0f) || (resizeRatio > heightResizeRatio))
-            resizeRatio = heightResizeRatio;
-    }
-
-    if (srcSize == originalSize) {
-        if (resizeRatio > 0.0f)
-            scale(resizeRatio, resizeRatio);
-        return;
-    }
-
-    // The image was scaled in the webpage so at minimum we must account for that scaling
-    float scaleX = srcSize.width() / static_cast<float>(originalSize.width());
-    float scaleY = srcSize.height() / static_cast<float>(originalSize.height());
-    if (resizeRatio > 0.0f) {
-        scaleX *= resizeRatio;
-        scaleY *= resizeRatio;
-    }
-
-    scale(scaleX, scaleY);
-}
-
-void DragImage::scale(float scaleX, float scaleY)
-{
-    int imageWidth = scaleX * m_bitmap.width();
-    int imageHeight = scaleY * m_bitmap.height();
-    m_bitmap = skia::ImageOperations::Resize(
-        m_bitmap, skia::ImageOperations::RESIZE_LANCZOS3, imageWidth, imageHeight);
-}
-
-void DragImage::dissolveToFraction(float fraction)
-{
-    m_bitmap.setAlphaType(kPremul_SkAlphaType);
-    SkAutoLockPixels lock(m_bitmap);
-
-    for (int row = 0; row < m_bitmap.height(); ++row) {
-        for (int column = 0; column < m_bitmap.width(); ++column) {
-            uint32_t* pixel = m_bitmap.getAddr32(column, row);
-            *pixel = SkPreMultiplyARGB(
-                SkColorGetA(*pixel) * fraction,
-                SkColorGetR(*pixel),
-                SkColorGetG(*pixel),
-                SkColorGetB(*pixel));
-        }
-    }
-}
-
-} // namespace WebCore