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/*
* Copyright (C) 2024 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
#if ENABLE(UNIFIED_PDF)
#include "PDFPresentationController.h"
#include <WebCore/GraphicsLayerClient.h>
#include <wtf/CheckedPtr.h>
#include <wtf/TZoneMalloc.h>
namespace WebCore {
class KeyboardScrollingAnimator;
};
namespace WebKit {
class PDFScrollingPresentationController final : public PDFPresentationController, public WebCore::GraphicsLayerClient {
WTF_MAKE_TZONE_ALLOCATED(PDFScrollingPresentationController);
WTF_MAKE_NONCOPYABLE(PDFScrollingPresentationController);
public:
PDFScrollingPresentationController(UnifiedPDFPlugin&);
private:
bool supportsDisplayMode(PDFDocumentLayout::DisplayMode) const override;
void willChangeDisplayMode(PDFDocumentLayout::DisplayMode) override { }
void teardown() override;
PDFPageCoverage pageCoverageForContentsRect(const WebCore::FloatRect&, std::optional<PDFLayoutRow>) const override;
PDFPageCoverageAndScales pageCoverageAndScalesForContentsRect(const WebCore::FloatRect&, std::optional<PDFLayoutRow>, float tilingScaleFactor) const override;
WebCore::FloatRect convertFromContentsToPainting(const WebCore::FloatRect& rect, std::optional<PDFDocumentLayout::PageIndex>) const override { return rect; }
WebCore::FloatRect convertFromPaintingToContents(const WebCore::FloatRect& rect, std::optional<PDFDocumentLayout::PageIndex>) const override { return rect; }
void deviceOrPageScaleFactorChanged() override { }
void setupLayers(WebCore::GraphicsLayer& scrolledContentsLayer) override;
void updateLayersOnLayoutChange(WebCore::FloatSize documentSize, WebCore::FloatSize centeringOffset, double scaleFactor) override;
void updateIsInWindow(bool isInWindow) override;
void updateDebugBorders(bool showDebugBorders, bool showRepaintCounters) override;
void updateForCurrentScrollability(OptionSet<WebCore::TiledBackingScrollability>) override;
GraphicsLayerClient& graphicsLayerClient() override { return *this; }
bool handleKeyboardEvent(const WebKeyboardEvent&) override;
#if PLATFORM(MAC)
bool handleKeyboardCommand(const WebKeyboardEvent&);
CheckedPtr<WebCore::KeyboardScrollingAnimator> checkedKeyboardScrollingAnimator() const;
#endif
std::optional<PDFDocumentLayout::PageIndex> pageIndexForCurrentView(AnchorPoint) const override;
void restorePDFPosition(const VisiblePDFPosition&) override;
void ensurePageIsVisible(PDFDocumentLayout::PageIndex) override { }
// GraphicsLayerClient
void notifyFlushRequired(const WebCore::GraphicsLayer*) override;
float pageScaleFactor() const override;
float deviceScaleFactor() const override;
std::optional<float> customContentsScale(const WebCore::GraphicsLayer*) const override;
bool layerNeedsPlatformContext(const WebCore::GraphicsLayer*) const override;
#if ENABLE(RE_DYNAMIC_CONTENT_SCALING)
bool layerAllowsDynamicContentScaling(const WebCore::GraphicsLayer*) const override;
#endif
void tiledBackingUsageChanged(const WebCore::GraphicsLayer*, bool /*usingTiledBacking*/) override;
void paintContents(const WebCore::GraphicsLayer*, WebCore::GraphicsContext&, const WebCore::FloatRect&, OptionSet<WebCore::GraphicsLayerPaintBehavior>) override;
void paintPDFSelection(const WebCore::GraphicsLayer*, WebCore::GraphicsContext&, const WebCore::FloatRect& clipRect, std::optional<PDFLayoutRow> = { });
std::optional<WebCore::PlatformLayerIdentifier> contentsLayerIdentifier() const final;
void updatePageBackgroundLayers();
std::optional<PDFDocumentLayout::PageIndex> pageIndexForPageBackgroundLayer(const WebCore::GraphicsLayer*) const;
WebCore::GraphicsLayer* backgroundLayerForPage(PDFDocumentLayout::PageIndex) const;
void didGeneratePreviewForPage(PDFDocumentLayout::PageIndex) override;
void paintBackgroundLayerForPage(const WebCore::GraphicsLayer*, WebCore::GraphicsContext&, const WebCore::FloatRect& clipRect, PDFDocumentLayout::PageIndex);
Vector<LayerCoverage> layerCoveragesForRepaintPageCoverage(RepaintRequirements, const PDFPageCoverage&) override;
void setSelectionLayerEnabled(bool) final;
RefPtr<WebCore::GraphicsLayer> protectedContentsLayer() { return m_contentsLayer; }
RefPtr<WebCore::GraphicsLayer> protectedPageBackgroundsContainerLayer() { return m_pageBackgroundsContainerLayer; }
#if ENABLE(PDFKIT_PAINTED_SELECTIONS)
RefPtr<WebCore::GraphicsLayer> protectedSelectionLayer() { return m_selectionLayer; }
#endif
RefPtr<WebCore::GraphicsLayer> m_pageBackgroundsContainerLayer;
RefPtr<WebCore::GraphicsLayer> m_contentsLayer;
#if ENABLE(PDFKIT_PAINTED_SELECTIONS)
RefPtr<WebCore::GraphicsLayer> m_selectionLayer;
#endif
HashMap<RefPtr<WebCore::GraphicsLayer>, PDFDocumentLayout::PageIndex> m_pageBackgroundLayers;
};
} // namespace WebKit
#endif // ENABLE(UNIFIED_PDF)
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