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/*
* Copyright (C) 2020-2022 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 "AffineTransform.h"
#include "Color.h"
#include "Gradient.h"
#include "GraphicsContext.h"
#include "Pattern.h"
#include "TextFlags.h"
#include <wtf/UniqueRef.h>
#if USE(CORE_TEXT)
#include <CoreGraphics/CoreGraphics.h>
#include <CoreText/CoreText.h>
#if PLATFORM(WIN)
#include <pal/spi/win/CoreTextSPIWin.h>
#else
#include <pal/spi/cf/CoreTextSPI.h>
#endif
#include <pal/spi/cg/CoreGraphicsSPI.h>
#endif
namespace WebCore {
class FloatPoint;
class Font;
class GlyphBuffer;
class GraphicsContext;
class DrawGlyphsRecorder {
WTF_MAKE_FAST_ALLOCATED;
WTF_MAKE_NONCOPYABLE(DrawGlyphsRecorder);
public:
enum class DeriveFontFromContext : bool { No, Yes };
explicit DrawGlyphsRecorder(GraphicsContext&, float scaleFactor = 1, DeriveFontFromContext = DeriveFontFromContext::No);
void drawGlyphs(const Font&, const GlyphBufferGlyph*, const GlyphBufferAdvance*, unsigned numGlyphs, const FloatPoint& anchorPoint, FontSmoothingMode);
#if USE(CORE_TEXT) && !PLATFORM(WIN)
void drawNativeText(CTFontRef, CGFloat fontSize, CTLineRef, CGRect lineRect);
void recordBeginLayer(CGRenderingStateRef, CGGStateRef, CGRect);
void recordEndLayer(CGRenderingStateRef, CGGStateRef);
void recordDrawGlyphs(CGRenderingStateRef, CGGStateRef, const CGAffineTransform*, const CGGlyph[], const CGPoint positions[], size_t count);
void recordDrawImage(CGRenderingStateRef, CGGStateRef, CGRect, CGImageRef);
#endif
private:
#if USE(CORE_TEXT) && !PLATFORM(WIN)
UniqueRef<GraphicsContext> createInternalContext();
#endif
void drawBySplittingIntoOTSVGAndNonOTSVGRuns(const Font&, const GlyphBufferGlyph*, const GlyphBufferAdvance*, unsigned numGlyphs, const FloatPoint& anchorPoint, FontSmoothingMode);
void drawOTSVGRun(const Font&, const GlyphBufferGlyph*, const GlyphBufferAdvance*, unsigned numGlyphs, const FloatPoint& anchorPoint, FontSmoothingMode);
void drawNonOTSVGRun(const Font&, const GlyphBufferGlyph*, const GlyphBufferAdvance*, unsigned numGlyphs, const FloatPoint& anchorPoint, FontSmoothingMode);
void populateInternalState(const GraphicsContextState&);
void populateInternalContext(const GraphicsContextState&);
void prepareInternalContext(const Font&, FontSmoothingMode);
void recordInitialColors();
void concludeInternalContext();
void updateFillBrush(const SourceBrush&);
void updateStrokeBrush(const SourceBrush&);
void updateCTM(const AffineTransform&);
enum class ShadowsIgnoreTransforms {
Unspecified,
Yes,
No
};
void updateShadow(const DropShadow&, ShadowsIgnoreTransforms);
#if USE(CORE_TEXT) && !PLATFORM(WIN)
void updateFillColor(CGColorRef);
void updateStrokeColor(CGColorRef);
void updateShadow(CGStyleRef);
#endif
GraphicsContext& m_owner;
#if USE(CORE_TEXT) && !PLATFORM(WIN)
UniqueRef<GraphicsContext> m_internalContext;
#endif
const Font* m_originalFont { nullptr };
const DeriveFontFromContext m_deriveFontFromContext;
FontSmoothingMode m_smoothingMode { FontSmoothingMode::AutoSmoothing };
AffineTransform m_originalTextMatrix;
struct State {
SourceBrush fillBrush;
SourceBrush strokeBrush;
AffineTransform ctm;
DropShadow dropShadow;
bool ignoreTransforms { false };
};
State m_originalState;
#if USE(CORE_TEXT) && !PLATFORM(WIN)
RetainPtr<CGColorRef> m_initialFillColor;
RetainPtr<CGColorRef> m_initialStrokeColor;
#endif
};
} // namespace WebCore
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