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/*
* 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 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 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.
*/
#pragma once
#include "FloatSize.h"
#include "ImageOrientation.h"
#include "IntSize.h"
#include "Path.h"
#include "TextFlags.h"
#include "TextIndicator.h"
#include <wtf/Forward.h>
#if PLATFORM(IOS_FAMILY)
#include <wtf/RetainPtr.h>
typedef struct CGImage *CGImageRef;
#elif PLATFORM(MAC)
#include <wtf/RetainPtr.h>
OBJC_CLASS NSImage;
#elif PLATFORM(WIN)
typedef struct HBITMAP__* HBITMAP;
#elif USE(CAIRO)
#include "RefPtrCairo.h"
#elif USE(SKIA)
#include <skia/core/SkImage.h>
#endif
namespace WebCore {
class Element;
class GraphicsClient;
class Image;
class IntRect;
class LocalFrame;
class Node;
#if PLATFORM(IOS_FAMILY)
typedef RetainPtr<CGImageRef> DragImageRef;
#elif PLATFORM(MAC)
typedef RetainPtr<NSImage> DragImageRef;
#elif PLATFORM(WIN)
typedef HBITMAP DragImageRef;
#elif USE(CAIRO)
typedef RefPtr<cairo_surface_t> DragImageRef;
#elif USE(SKIA)
typedef sk_sp<SkImage> DragImageRef;
#else
typedef void* DragImageRef;
#endif
#if PLATFORM(COCOA)
extern const float ColorSwatchCornerRadius;
extern const float ColorSwatchStrokeSize;
extern const float ColorSwatchWidth;
#endif
IntSize dragImageSize(DragImageRef);
// These functions should be memory neutral, eg. if they return a newly allocated image,
// they should release the input image. As a corollary these methods don't guarantee
// the input image ref will still be valid after they have been called.
DragImageRef fitDragImageToMaxSize(DragImageRef, const IntSize& srcSize, const IntSize& dstSize);
DragImageRef scaleDragImage(DragImageRef, FloatSize scale);
DragImageRef platformAdjustDragImageForDeviceScaleFactor(DragImageRef, float deviceScaleFactor);
DragImageRef dissolveDragImageToFraction(DragImageRef, float delta);
DragImageRef createDragImageFromImage(Image*, ImageOrientation, GraphicsClient* = nullptr, float deviceScaleFactor = 1);
DragImageRef createDragImageIconForCachedImageFilename(const String&);
// FIXME: These platform helpers should be refactored to avoid using `LocalFrame` and `Node`.
WEBCORE_EXPORT DragImageRef createDragImageForNode(LocalFrame&, Node&);
WEBCORE_EXPORT DragImageRef createDragImageForSelection(LocalFrame&, TextIndicatorData&, bool forceBlackText = false);
WEBCORE_EXPORT DragImageRef createDragImageForRange(LocalFrame&, const SimpleRange&, bool forceBlackText = false);
DragImageRef createDragImageForColor(const Color&, const FloatRect&, float, Path&);
DragImageRef createDragImageForImage(LocalFrame&, Node&, IntRect& imageRect, IntRect& elementRect);
DragImageRef createDragImageForLink(Element&, URL&, const String& label, TextIndicatorData&, float deviceScaleFactor);
void deleteDragImage(DragImageRef);
IntPoint dragOffsetForLinkDragImage(DragImageRef);
FloatPoint anchorPointForLinkDragImage(DragImageRef);
class DragImage final {
public:
WEBCORE_EXPORT DragImage();
explicit DragImage(DragImageRef);
WEBCORE_EXPORT DragImage(DragImage&&);
WEBCORE_EXPORT ~DragImage();
DragImage(std::optional<TextIndicatorData>&& indicatorData, std::optional<Path>&& visiblePath)
: m_indicatorData(WTFMove(indicatorData))
, m_visiblePath(WTFMove(visiblePath))
{ }
WEBCORE_EXPORT DragImage& operator=(DragImage&&);
void setIndicatorData(const TextIndicatorData& data) { m_indicatorData = data; }
bool hasIndicatorData() const { return !!m_indicatorData; }
const std::optional<TextIndicatorData>& indicatorData() const { return m_indicatorData; }
void setVisiblePath(const Path& path) { m_visiblePath = path; }
bool hasVisiblePath() const { return !!m_visiblePath; }
const std::optional<Path>& visiblePath() const { return m_visiblePath; }
explicit operator bool() const { return !!m_dragImageRef; }
DragImageRef get() const { return m_dragImageRef; }
private:
DragImageRef m_dragImageRef;
std::optional<TextIndicatorData> m_indicatorData;
std::optional<Path> m_visiblePath;
};
}
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