321 lines
8.3 KiB
C++
321 lines
8.3 KiB
C++
/*
|
|
* Copyright (C) 2006-2020 Apple Inc. All rights reserved.
|
|
* Copyright (C) 2007 Alp Toker <alp@atoker.com>
|
|
* Copyright (C) 2008 Torch Mobile, Inc.
|
|
*
|
|
* 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 "FloatPoint.h"
|
|
#include "GraphicsTypes.h"
|
|
#include <wtf/Variant.h>
|
|
#include <wtf/Vector.h>
|
|
|
|
#if USE(CG)
|
|
#include <wtf/RetainPtr.h>
|
|
#endif
|
|
|
|
#if USE(DIRECT2D)
|
|
#include "COMPtr.h"
|
|
#endif
|
|
|
|
#if USE(CG)
|
|
typedef struct CGContext* CGContextRef;
|
|
typedef struct CGGradient* CGGradientRef;
|
|
#endif
|
|
|
|
#if USE(DIRECT2D)
|
|
interface ID2D1Brush;
|
|
interface ID2D1RenderTarget;
|
|
#endif
|
|
|
|
#if USE(CAIRO)
|
|
typedef struct _cairo_pattern cairo_pattern_t;
|
|
typedef void* PlatformGradient;
|
|
#endif
|
|
|
|
#if PLATFORM(HAIKU)
|
|
#include <Gradient.h>
|
|
#include <memory>
|
|
#endif
|
|
|
|
namespace WebCore {
|
|
|
|
class FloatRect;
|
|
class GraphicsContext;
|
|
|
|
class Gradient : public RefCounted<Gradient> {
|
|
public:
|
|
struct ColorStop {
|
|
float offset { 0 };
|
|
Color color;
|
|
|
|
template<typename Encoder> void encode(Encoder&) const;
|
|
template<typename Decoder> static std::optional<ColorStop> decode(Decoder&);
|
|
};
|
|
|
|
using ColorStopVector = Vector<ColorStop, 2>;
|
|
|
|
struct LinearData {
|
|
FloatPoint point0;
|
|
FloatPoint point1;
|
|
|
|
template<typename Encoder> void encode(Encoder&) const;
|
|
template<typename Decoder> static std::optional<LinearData> decode(Decoder&);
|
|
};
|
|
|
|
struct RadialData {
|
|
FloatPoint point0;
|
|
FloatPoint point1;
|
|
float startRadius;
|
|
float endRadius;
|
|
float aspectRatio; // For elliptical gradient, width / height.
|
|
|
|
template<typename Encoder> void encode(Encoder&) const;
|
|
template<typename Decoder> static std::optional<RadialData> decode(Decoder&);
|
|
};
|
|
|
|
struct ConicData {
|
|
FloatPoint point0;
|
|
float angleRadians;
|
|
|
|
template<typename Encoder> void encode(Encoder&) const;
|
|
template<typename Decoder> static std::optional<ConicData> decode(Decoder&);
|
|
};
|
|
|
|
using Data = Variant<LinearData, RadialData, ConicData>;
|
|
|
|
WEBCORE_EXPORT static Ref<Gradient> create(Data&&);
|
|
|
|
bool isZeroSize() const;
|
|
|
|
const Data& data() const { return m_data; }
|
|
|
|
WEBCORE_EXPORT void addColorStop(ColorStop&&);
|
|
WEBCORE_EXPORT void setSortedColorStops(ColorStopVector&&);
|
|
|
|
const ColorStopVector& stops() const { return m_stops; }
|
|
|
|
WEBCORE_EXPORT void setSpreadMethod(GradientSpreadMethod);
|
|
GradientSpreadMethod spreadMethod() const { return m_spreadMethod; }
|
|
|
|
void fill(GraphicsContext&, const FloatRect&);
|
|
void adjustParametersForTiledDrawing(FloatSize&, FloatRect&, const FloatSize& spacing);
|
|
|
|
unsigned hash() const;
|
|
|
|
#if USE(CAIRO)
|
|
RefPtr<cairo_pattern_t> createPattern(float globalAlpha, const AffineTransform&);
|
|
#endif
|
|
|
|
#if USE(HAIKU)
|
|
const BGradient& getHaikuGradient();
|
|
#endif
|
|
|
|
#if USE(CG)
|
|
void paint(GraphicsContext&);
|
|
void paint(CGContextRef);
|
|
#endif
|
|
|
|
#if USE(DIRECT2D)
|
|
ID2D1Brush* createBrush(ID2D1RenderTarget*);
|
|
#endif
|
|
|
|
template<typename Encoder> void encode(Encoder&) const;
|
|
template<typename Decoder> static std::optional<Ref<Gradient>> decode(Decoder&);
|
|
|
|
private:
|
|
explicit Gradient(Data&&);
|
|
|
|
void sortStops() const;
|
|
void stopsChanged();
|
|
|
|
#if USE(CG)
|
|
void createCGGradient();
|
|
#endif
|
|
|
|
Data m_data;
|
|
mutable ColorStopVector m_stops;
|
|
mutable bool m_stopsSorted { false };
|
|
GradientSpreadMethod m_spreadMethod { GradientSpreadMethod::Pad };
|
|
mutable unsigned m_cachedHash { 0 };
|
|
|
|
#if USE(CG)
|
|
RetainPtr<CGGradientRef> m_gradient;
|
|
#endif
|
|
|
|
#if USE(DIRECT2D)
|
|
COMPtr<ID2D1Brush> m_brush;
|
|
#endif
|
|
|
|
#if USE(HAIKU)
|
|
std::unique_ptr<BGradient> m_gradient;
|
|
#endif
|
|
};
|
|
|
|
template<typename Encoder> void Gradient::ColorStop::encode(Encoder& encoder) const
|
|
{
|
|
encoder << offset;
|
|
encoder << color;
|
|
}
|
|
|
|
template<typename Decoder> std::optional<Gradient::ColorStop> Gradient::ColorStop::decode(Decoder& decoder)
|
|
{
|
|
std::optional<float> offset;
|
|
decoder >> offset;
|
|
if (!offset)
|
|
return std::nullopt;
|
|
|
|
std::optional<Color> color;
|
|
decoder >> color;
|
|
if (!color)
|
|
return std::nullopt;
|
|
|
|
return {{ *offset, *color }};
|
|
}
|
|
|
|
template<typename Encoder> void Gradient::LinearData::encode(Encoder& encoder) const
|
|
{
|
|
encoder << point0;
|
|
encoder << point1;
|
|
}
|
|
|
|
template<typename Decoder> std::optional<Gradient::LinearData> Gradient::LinearData::decode(Decoder& decoder)
|
|
{
|
|
std::optional<FloatPoint> point0;
|
|
decoder >> point0;
|
|
if (!point0)
|
|
return std::nullopt;
|
|
|
|
std::optional<FloatPoint> point1;
|
|
decoder >> point1;
|
|
if (!point1)
|
|
return std::nullopt;
|
|
|
|
return {{ *point0, *point1 }};
|
|
}
|
|
|
|
template<typename Encoder> void Gradient::RadialData::encode(Encoder& encoder) const
|
|
{
|
|
encoder << point0;
|
|
encoder << point1;
|
|
encoder << startRadius;
|
|
encoder << endRadius;
|
|
encoder << aspectRatio;
|
|
}
|
|
|
|
template<typename Decoder> std::optional<Gradient::RadialData> Gradient::RadialData::decode(Decoder& decoder)
|
|
{
|
|
std::optional<FloatPoint> point0;
|
|
decoder >> point0;
|
|
if (!point0)
|
|
return std::nullopt;
|
|
|
|
std::optional<FloatPoint> point1;
|
|
decoder >> point1;
|
|
if (!point1)
|
|
return std::nullopt;
|
|
|
|
std::optional<float> startRadius;
|
|
decoder >> startRadius;
|
|
if (!startRadius)
|
|
return std::nullopt;
|
|
|
|
std::optional<float> endRadius;
|
|
decoder >> endRadius;
|
|
if (!endRadius)
|
|
return std::nullopt;
|
|
|
|
std::optional<float> aspectRatio;
|
|
decoder >> aspectRatio;
|
|
if (!aspectRatio)
|
|
return std::nullopt;
|
|
|
|
return {{ *point0, *point1, *startRadius, *endRadius, *aspectRatio }};
|
|
}
|
|
|
|
template<typename Encoder> void Gradient::ConicData::encode(Encoder& encoder) const
|
|
{
|
|
encoder << point0;
|
|
encoder << angleRadians;
|
|
}
|
|
|
|
template<typename Decoder> std::optional<Gradient::ConicData> Gradient::ConicData::decode(Decoder& decoder)
|
|
{
|
|
std::optional<FloatPoint> point0;
|
|
decoder >> point0;
|
|
if (!point0)
|
|
return std::nullopt;
|
|
|
|
std::optional<float> angleRadians;
|
|
decoder >> angleRadians;
|
|
if (!angleRadians)
|
|
return std::nullopt;
|
|
|
|
return {{ *point0, *angleRadians }};
|
|
}
|
|
|
|
template<typename Encoder> void Gradient::encode(Encoder& encoder) const
|
|
{
|
|
encoder << m_data;
|
|
encoder << m_stops;
|
|
encoder << m_stopsSorted;
|
|
encoder << m_spreadMethod;
|
|
}
|
|
|
|
template<typename Decoder> std::optional<Ref<Gradient>> Gradient::decode(Decoder& decoder)
|
|
{
|
|
std::optional<Data> data;
|
|
decoder >> data;
|
|
if (!data)
|
|
return std::nullopt;
|
|
auto gradient = Gradient::create(WTFMove(*data));
|
|
|
|
std::optional<ColorStopVector> stops;
|
|
decoder >> stops;
|
|
if (!stops)
|
|
return std::nullopt;
|
|
std::optional<bool> stopsSorted;
|
|
decoder >> stopsSorted;
|
|
if (!stopsSorted.has_value())
|
|
return std::nullopt;
|
|
if (*stopsSorted)
|
|
gradient->setSortedColorStops(WTFMove(*stops));
|
|
else {
|
|
for (auto& stop : *stops)
|
|
gradient->addColorStop(WTFMove(stop));
|
|
}
|
|
|
|
GradientSpreadMethod spreadMethod;
|
|
if (!decoder.decode(spreadMethod))
|
|
return std::nullopt;
|
|
gradient->setSpreadMethod(spreadMethod);
|
|
|
|
return gradient;
|
|
}
|
|
|
|
} // namespace WebCore
|