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/*
* Copyright (C) 2014 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.
*/
#pragma once
#include <WebCore/DebugOverlayRegions.h>
#include <WebCore/DocumentPage.h>
#include <WebCore/LocalFrame.h>
#include <wtf/HashMap.h>
#include <wtf/OptionSet.h>
#include <wtf/Vector.h>
#include <wtf/WeakHashMap.h>
namespace WebCore {
class Page;
class RegionOverlay;
class DebugPageOverlays {
public:
static DebugPageOverlays& singleton();
enum class RegionType : uint8_t {
WheelEventHandlers,
NonFastScrollableRegion,
InteractionRegion,
};
static constexpr unsigned NumberOfRegionTypes = static_cast<unsigned>(RegionType::InteractionRegion) + 1;
static void didLayout(LocalFrame&);
static void didChangeEventHandlers(LocalFrame&);
static void doAfterUpdateRendering(Page&);
static bool shouldPaintOverlayIntoLayerForRegionType(Page&, RegionType);
WEBCORE_EXPORT static void settingsChanged(Page&);
private:
static bool hasOverlays(Page&);
void showRegionOverlay(Page&, RegionType);
void hideRegionOverlay(Page&, RegionType);
void updateRegionIfNecessary(Page&, RegionType);
void regionChanged(LocalFrame&, RegionType);
bool hasOverlaysForPage(Page&) const;
void updateOverlayRegionVisibility(Page&, OptionSet<DebugOverlayRegions>);
bool shouldPaintOverlayIntoLayer(Page&, RegionType) const;
RegionOverlay* regionOverlayForPage(Page&, RegionType) const;
RegionOverlay& ensureRegionOverlayForPage(Page&, RegionType);
WeakHashMap<Page, Vector<RefPtr<RegionOverlay>>> m_pageRegionOverlays;
static DebugPageOverlays* sharedDebugOverlays;
};
#define FAST_RETURN_IF_NO_OVERLAYS(page) if (!page || !hasOverlays(*page)) [[likely]] return;
inline bool DebugPageOverlays::hasOverlays(Page& page)
{
if (!sharedDebugOverlays)
return false;
return sharedDebugOverlays->hasOverlaysForPage(page);
}
inline void DebugPageOverlays::didLayout(LocalFrame& frame)
{
FAST_RETURN_IF_NO_OVERLAYS(frame.page());
sharedDebugOverlays->regionChanged(frame, RegionType::WheelEventHandlers);
sharedDebugOverlays->regionChanged(frame, RegionType::NonFastScrollableRegion);
sharedDebugOverlays->regionChanged(frame, RegionType::InteractionRegion);
}
inline void DebugPageOverlays::didChangeEventHandlers(LocalFrame& frame)
{
FAST_RETURN_IF_NO_OVERLAYS(frame.page());
sharedDebugOverlays->regionChanged(frame, RegionType::WheelEventHandlers);
sharedDebugOverlays->regionChanged(frame, RegionType::NonFastScrollableRegion);
sharedDebugOverlays->regionChanged(frame, RegionType::InteractionRegion);
}
inline void DebugPageOverlays::doAfterUpdateRendering(Page& page)
{
if (!hasOverlays(page)) [[likely]]
return;
sharedDebugOverlays->updateRegionIfNecessary(page, RegionType::WheelEventHandlers);
sharedDebugOverlays->updateRegionIfNecessary(page, RegionType::NonFastScrollableRegion);
sharedDebugOverlays->updateRegionIfNecessary(page, RegionType::InteractionRegion);
}
inline bool DebugPageOverlays::shouldPaintOverlayIntoLayerForRegionType(Page& page, RegionType regionType)
{
if (!hasOverlays(page)) [[likely]]
return false;
return sharedDebugOverlays->shouldPaintOverlayIntoLayer(page, regionType);
}
} // namespace WebCore
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