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/*
* Copyright (C) 2010 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. AND ITS CONTRIBUTORS ``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 ITS 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.
*/
#ifndef PageOverlay_h
#define PageOverlay_h
#include "Color.h"
#include "FloatPoint.h"
#include "IntRect.h"
#include "Timer.h"
#include <wtf/PassRefPtr.h>
#include <wtf/RefCounted.h>
#include <wtf/text/WTFString.h>
namespace WebCore {
class Frame;
class GraphicsContext;
class GraphicsLayer;
class Page;
class PageOverlayController;
class PlatformMouseEvent;
class PageOverlay final : public RefCounted<PageOverlay> {
WTF_MAKE_NONCOPYABLE(PageOverlay);
WTF_MAKE_FAST_ALLOCATED;
public:
class Client {
protected:
virtual ~Client() { }
public:
virtual void pageOverlayDestroyed(PageOverlay&) = 0;
virtual void willMoveToPage(PageOverlay&, Page*) = 0;
virtual void didMoveToPage(PageOverlay&, Page*) = 0;
virtual void drawRect(PageOverlay&, GraphicsContext&, const IntRect& dirtyRect) = 0;
virtual bool mouseEvent(PageOverlay&, const PlatformMouseEvent&) = 0;
virtual void didScrollFrame(PageOverlay&, Frame&) { }
virtual bool copyAccessibilityAttributeStringValueForPoint(PageOverlay&, String /* attribute */, FloatPoint, String&) { return false; }
virtual bool copyAccessibilityAttributeBoolValueForPoint(PageOverlay&, String /* attribute */, FloatPoint, bool&) { return false; }
virtual Vector<String> copyAccessibilityAttributeNames(PageOverlay&, bool /* parameterizedNames */) { return { }; }
};
enum class OverlayType {
View, // Fixed to the view size; does not scale or scroll with the document, repaints on scroll.
Document, // Scales and scrolls with the document.
};
WEBCORE_EXPORT static Ref<PageOverlay> create(Client&, OverlayType = OverlayType::View);
WEBCORE_EXPORT virtual ~PageOverlay();
WEBCORE_EXPORT PageOverlayController* controller() const;
typedef uint64_t PageOverlayID;
virtual PageOverlayID pageOverlayID() const { return m_pageOverlayID; }
void setPage(Page*);
Page* page() const { return m_page; }
WEBCORE_EXPORT void setNeedsDisplay(const IntRect& dirtyRect);
WEBCORE_EXPORT void setNeedsDisplay();
void drawRect(GraphicsContext&, const IntRect& dirtyRect);
bool mouseEvent(const PlatformMouseEvent&);
void didScrollFrame(Frame&);
bool copyAccessibilityAttributeStringValueForPoint(String attribute, FloatPoint parameter, String& value);
bool copyAccessibilityAttributeBoolValueForPoint(String attribute, FloatPoint parameter, bool& value);
Vector<String> copyAccessibilityAttributeNames(bool parameterizedNames);
void startFadeInAnimation();
void startFadeOutAnimation();
WEBCORE_EXPORT void stopFadeOutAnimation();
WEBCORE_EXPORT void clear();
Client& client() const { return m_client; }
enum class FadeMode { DoNotFade, Fade };
OverlayType overlayType() { return m_overlayType; }
WEBCORE_EXPORT IntRect bounds() const;
WEBCORE_EXPORT IntRect frame() const;
WEBCORE_EXPORT void setFrame(IntRect);
WEBCORE_EXPORT IntSize viewToOverlayOffset() const;
RGBA32 backgroundColor() const { return m_backgroundColor; }
void setBackgroundColor(RGBA32);
void setShouldIgnoreMouseEventsOutsideBounds(bool flag) { m_shouldIgnoreMouseEventsOutsideBounds = flag; }
// FIXME: PageOverlay should own its layer, instead of PageOverlayController.
WEBCORE_EXPORT GraphicsLayer& layer();
bool needsSynchronousScrolling() const { return m_needsSynchronousScrolling; }
void setNeedsSynchronousScrolling(bool needsSynchronousScrolling) { m_needsSynchronousScrolling = needsSynchronousScrolling; }
private:
explicit PageOverlay(Client&, OverlayType);
void startFadeAnimation();
void fadeAnimationTimerFired();
Client& m_client;
Page* m_page { nullptr };
Timer m_fadeAnimationTimer;
double m_fadeAnimationStartTime { 0 };
double m_fadeAnimationDuration;
enum FadeAnimationType {
NoAnimation,
FadeInAnimation,
FadeOutAnimation,
};
FadeAnimationType m_fadeAnimationType { NoAnimation };
float m_fractionFadedIn { 1 };
bool m_needsSynchronousScrolling;
OverlayType m_overlayType;
IntRect m_overrideFrame;
RGBA32 m_backgroundColor { Color::transparent };
PageOverlayID m_pageOverlayID;
bool m_shouldIgnoreMouseEventsOutsideBounds { true };
};
} // namespace WebKit
#endif // PageOverlay_h
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