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/*
* Copyright (C) 2012 Adobe Systems Incorporated. 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 THE COPYRIGHT HOLDER "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 THE COPYRIGHT HOLDER 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 "Length.h"
#include "LengthSize.h"
#include "WindRule.h"
#include <wtf/RefCounted.h>
#include <wtf/RefPtr.h>
#include <wtf/TypeCasts.h>
#include <wtf/Vector.h>
namespace WebCore {
class FloatRect;
class Path;
class RenderBox;
class SVGPathByteStream;
class BasicShape : public RefCounted<BasicShape> {
public:
virtual ~BasicShape() = default;
enum Type {
BasicShapePolygonType,
BasicShapePathType,
BasicShapeCircleType,
BasicShapeEllipseType,
BasicShapeInsetType
};
virtual Type type() const = 0;
virtual const Path& path(const FloatRect&) = 0;
virtual WindRule windRule() const { return RULE_NONZERO; }
virtual bool canBlend(const BasicShape&) const = 0;
virtual Ref<BasicShape> blend(const BasicShape& from, double) const = 0;
virtual bool operator==(const BasicShape&) const = 0;
};
class BasicShapeCenterCoordinate {
public:
enum Direction {
TopLeft,
BottomRight
};
BasicShapeCenterCoordinate()
: m_direction(TopLeft)
, m_length(Undefined)
{
updateComputedLength();
}
BasicShapeCenterCoordinate(Direction direction, Length length)
: m_direction(direction)
, m_length(length)
{
updateComputedLength();
}
BasicShapeCenterCoordinate(const BasicShapeCenterCoordinate& other)
: m_direction(other.direction())
, m_length(other.length())
, m_computedLength(other.m_computedLength)
{
}
Direction direction() const { return m_direction; }
const Length& length() const { return m_length; }
const Length& computedLength() const { return m_computedLength; }
BasicShapeCenterCoordinate blend(const BasicShapeCenterCoordinate& from, double progress) const
{
return BasicShapeCenterCoordinate(TopLeft, WebCore::blend(from.m_computedLength, m_computedLength, progress));
}
bool operator==(const BasicShapeCenterCoordinate& other) const
{
return m_direction == other.m_direction
&& m_length == other.m_length
&& m_computedLength == other.m_computedLength;
}
private:
void updateComputedLength();
Direction m_direction;
Length m_length;
Length m_computedLength;
};
class BasicShapeRadius {
public:
enum Type {
Value,
ClosestSide,
FarthestSide
};
BasicShapeRadius()
: m_value(Undefined),
m_type(ClosestSide)
{ }
explicit BasicShapeRadius(Length v)
: m_value(v)
, m_type(Value)
{ }
explicit BasicShapeRadius(Type t)
: m_value(Undefined)
, m_type(t)
{ }
BasicShapeRadius(const BasicShapeRadius& other)
: m_value(other.value())
, m_type(other.type())
{ }
const Length& value() const { return m_value; }
Type type() const { return m_type; }
bool canBlend(const BasicShapeRadius& other) const
{
// FIXME determine how to interpolate between keywords. See bug 125108.
return m_type == Value && other.type() == Value;
}
BasicShapeRadius blend(const BasicShapeRadius& from, double progress) const
{
if (m_type != Value || from.type() != Value)
return BasicShapeRadius(from);
return BasicShapeRadius(WebCore::blend(from.value(), value(), progress));
}
bool operator==(const BasicShapeRadius& other) const
{
return m_value == other.m_value && m_type == other.m_type;
}
private:
Length m_value;
Type m_type;
};
class BasicShapeCircle final : public BasicShape {
public:
static Ref<BasicShapeCircle> create() { return adoptRef(*new BasicShapeCircle); }
const BasicShapeCenterCoordinate& centerX() const { return m_centerX; }
const BasicShapeCenterCoordinate& centerY() const { return m_centerY; }
const BasicShapeRadius& radius() const { return m_radius; }
float floatValueForRadiusInBox(float boxWidth, float boxHeight) const;
void setCenterX(BasicShapeCenterCoordinate centerX) { m_centerX = WTFMove(centerX); }
void setCenterY(BasicShapeCenterCoordinate centerY) { m_centerY = WTFMove(centerY); }
void setRadius(BasicShapeRadius radius) { m_radius = WTFMove(radius); }
private:
BasicShapeCircle() = default;
Type type() const override { return BasicShapeCircleType; }
const Path& path(const FloatRect&) override;
bool canBlend(const BasicShape&) const override;
Ref<BasicShape> blend(const BasicShape& from, double) const override;
bool operator==(const BasicShape&) const override;
BasicShapeCenterCoordinate m_centerX;
BasicShapeCenterCoordinate m_centerY;
BasicShapeRadius m_radius;
};
class BasicShapeEllipse final : public BasicShape {
public:
static Ref<BasicShapeEllipse> create() { return adoptRef(*new BasicShapeEllipse); }
const BasicShapeCenterCoordinate& centerX() const { return m_centerX; }
const BasicShapeCenterCoordinate& centerY() const { return m_centerY; }
const BasicShapeRadius& radiusX() const { return m_radiusX; }
const BasicShapeRadius& radiusY() const { return m_radiusY; }
float floatValueForRadiusInBox(const BasicShapeRadius&, float center, float boxWidthOrHeight) const;
void setCenterX(BasicShapeCenterCoordinate centerX) { m_centerX = WTFMove(centerX); }
void setCenterY(BasicShapeCenterCoordinate centerY) { m_centerY = WTFMove(centerY); }
void setRadiusX(BasicShapeRadius radiusX) { m_radiusX = WTFMove(radiusX); }
void setRadiusY(BasicShapeRadius radiusY) { m_radiusY = WTFMove(radiusY); }
private:
BasicShapeEllipse() = default;
Type type() const override { return BasicShapeEllipseType; }
const Path& path(const FloatRect&) override;
bool canBlend(const BasicShape&) const override;
Ref<BasicShape> blend(const BasicShape& from, double) const override;
bool operator==(const BasicShape&) const override;
BasicShapeCenterCoordinate m_centerX;
BasicShapeCenterCoordinate m_centerY;
BasicShapeRadius m_radiusX;
BasicShapeRadius m_radiusY;
};
class BasicShapePolygon final : public BasicShape {
public:
static Ref<BasicShapePolygon> create() { return adoptRef(*new BasicShapePolygon); }
const Vector<Length>& values() const { return m_values; }
const Length& getXAt(unsigned i) const { return m_values[2 * i]; }
const Length& getYAt(unsigned i) const { return m_values[2 * i + 1]; }
void setWindRule(WindRule windRule) { m_windRule = windRule; }
void appendPoint(Length x, Length y) { m_values.append(WTFMove(x)); m_values.append(WTFMove(y)); }
WindRule windRule() const override { return m_windRule; }
private:
BasicShapePolygon() = default;
Type type() const override { return BasicShapePolygonType; }
const Path& path(const FloatRect&) override;
bool canBlend(const BasicShape&) const override;
Ref<BasicShape> blend(const BasicShape& from, double) const override;
bool operator==(const BasicShape&) const override;
WindRule m_windRule { RULE_NONZERO };
Vector<Length> m_values;
};
class BasicShapePath final : public BasicShape {
public:
static Ref<BasicShapePath> create(std::unique_ptr<SVGPathByteStream>&& byteStream)
{
return adoptRef(*new BasicShapePath(WTFMove(byteStream)));
}
void setWindRule(WindRule windRule) { m_windRule = windRule; }
WindRule windRule() const override { return m_windRule; }
const SVGPathByteStream* pathData() const { return m_byteStream.get(); }
private:
BasicShapePath(std::unique_ptr<SVGPathByteStream>&&);
Type type() const override { return BasicShapePathType; }
const Path& path(const FloatRect&) override;
bool canBlend(const BasicShape&) const override;
Ref<BasicShape> blend(const BasicShape& from, double) const override;
bool operator==(const BasicShape&) const override;
std::unique_ptr<SVGPathByteStream> m_byteStream;
WindRule m_windRule { RULE_NONZERO };
};
class BasicShapeInset final : public BasicShape {
public:
static Ref<BasicShapeInset> create() { return adoptRef(*new BasicShapeInset); }
const Length& top() const { return m_top; }
const Length& right() const { return m_right; }
const Length& bottom() const { return m_bottom; }
const Length& left() const { return m_left; }
const LengthSize& topLeftRadius() const { return m_topLeftRadius; }
const LengthSize& topRightRadius() const { return m_topRightRadius; }
const LengthSize& bottomRightRadius() const { return m_bottomRightRadius; }
const LengthSize& bottomLeftRadius() const { return m_bottomLeftRadius; }
void setTop(Length top) { m_top = WTFMove(top); }
void setRight(Length right) { m_right = WTFMove(right); }
void setBottom(Length bottom) { m_bottom = WTFMove(bottom); }
void setLeft(Length left) { m_left = WTFMove(left); }
void setTopLeftRadius(LengthSize radius) { m_topLeftRadius = WTFMove(radius); }
void setTopRightRadius(LengthSize radius) { m_topRightRadius = WTFMove(radius); }
void setBottomRightRadius(LengthSize radius) { m_bottomRightRadius = WTFMove(radius); }
void setBottomLeftRadius(LengthSize radius) { m_bottomLeftRadius = WTFMove(radius); }
private:
BasicShapeInset() = default;
Type type() const override { return BasicShapeInsetType; }
const Path& path(const FloatRect&) override;
bool canBlend(const BasicShape&) const override;
Ref<BasicShape> blend(const BasicShape& from, double) const override;
bool operator==(const BasicShape&) const override;
Length m_right;
Length m_top;
Length m_bottom;
Length m_left;
LengthSize m_topLeftRadius;
LengthSize m_topRightRadius;
LengthSize m_bottomRightRadius;
LengthSize m_bottomLeftRadius;
};
} // namespace WebCore
#define SPECIALIZE_TYPE_TRAITS_BASIC_SHAPE(ToValueTypeName, predicate) \
SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::ToValueTypeName) \
static bool isType(const WebCore::BasicShape& basicShape) { return basicShape.type() == WebCore::predicate; } \
SPECIALIZE_TYPE_TRAITS_END()
SPECIALIZE_TYPE_TRAITS_BASIC_SHAPE(BasicShapeCircle, BasicShape::BasicShapeCircleType)
SPECIALIZE_TYPE_TRAITS_BASIC_SHAPE(BasicShapeEllipse, BasicShape::BasicShapeEllipseType)
SPECIALIZE_TYPE_TRAITS_BASIC_SHAPE(BasicShapePolygon, BasicShape::BasicShapePolygonType)
SPECIALIZE_TYPE_TRAITS_BASIC_SHAPE(BasicShapePath, BasicShape::BasicShapePathType)
SPECIALIZE_TYPE_TRAITS_BASIC_SHAPE(BasicShapeInset, BasicShape::BasicShapeInsetType)