15c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)/* 25c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Copyright (C) 2006, 2008 Apple Inc. All rights reserved. 35c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies) 45c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 55c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Redistribution and use in source and binary forms, with or without 65c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * modification, are permitted provided that the following conditions 75c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * are met: 85c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 1. Redistributions of source code must retain the above copyright 95c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * notice, this list of conditions and the following disclaimer. 105c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 2. Redistributions in binary form must reproduce the above copyright 115c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * notice, this list of conditions and the following disclaimer in the 125c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * documentation and/or other materials provided with the distribution. 135c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 145c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 155c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 165c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 175c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 185c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 195c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 205c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 215c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 225c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 235c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 2402772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 255c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) */ 265c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 275c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#ifndef CanvasStyle_h 285c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#define CanvasStyle_h 295c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 30f79f16f17ddc4f842d7b7a38603e280e94be826aTorne (Richard Coles)#include "platform/graphics/Color.h" 31c1847b1379d12d0e05df27436bf19a9b1bf12deaTorne (Richard Coles)#include "platform/heap/Handle.h" 32e69819bd8e388ea4ad1636a19aa6b2eed4952191Ben Murdoch#include "wtf/Assertions.h" 33e69819bd8e388ea4ad1636a19aa6b2eed4952191Ben Murdoch#include "wtf/RefCounted.h" 34e69819bd8e388ea4ad1636a19aa6b2eed4952191Ben Murdoch#include "wtf/text/WTFString.h" 355c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 36c1847b1379d12d0e05df27436bf19a9b1bf12deaTorne (Richard Coles)namespace blink { 375c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 385c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) class CanvasGradient; 395c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) class CanvasPattern; 405c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) class GraphicsContext; 415c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) class HTMLCanvasElement; 425c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 43c1847b1379d12d0e05df27436bf19a9b1bf12deaTorne (Richard Coles) class CanvasStyle FINAL : public RefCountedWillBeGarbageCollected<CanvasStyle> { 445c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) public: 45c1847b1379d12d0e05df27436bf19a9b1bf12deaTorne (Richard Coles) static PassRefPtrWillBeRawPtr<CanvasStyle> createFromRGBA(RGBA32 rgba) { return adoptRefWillBeNoop(new CanvasStyle(rgba)); } 46c1847b1379d12d0e05df27436bf19a9b1bf12deaTorne (Richard Coles) static PassRefPtrWillBeRawPtr<CanvasStyle> createFromString(const String& color); 47c1847b1379d12d0e05df27436bf19a9b1bf12deaTorne (Richard Coles) static PassRefPtrWillBeRawPtr<CanvasStyle> createFromStringWithOverrideAlpha(const String& color, float alpha); 48c1847b1379d12d0e05df27436bf19a9b1bf12deaTorne (Richard Coles) static PassRefPtrWillBeRawPtr<CanvasStyle> createFromGrayLevelWithAlpha(float grayLevel, float alpha) { return adoptRefWillBeNoop(new CanvasStyle(grayLevel, alpha)); } 49c1847b1379d12d0e05df27436bf19a9b1bf12deaTorne (Richard Coles) static PassRefPtrWillBeRawPtr<CanvasStyle> createFromRGBAChannels(float r, float g, float b, float a) { return adoptRefWillBeNoop(new CanvasStyle(r, g, b, a)); } 50c1847b1379d12d0e05df27436bf19a9b1bf12deaTorne (Richard Coles) static PassRefPtrWillBeRawPtr<CanvasStyle> createFromCMYKAChannels(float c, float m, float y, float k, float a) { return adoptRefWillBeNoop(new CanvasStyle(c, m, y, k, a)); } 51c1847b1379d12d0e05df27436bf19a9b1bf12deaTorne (Richard Coles) static PassRefPtrWillBeRawPtr<CanvasStyle> createFromGradient(PassRefPtrWillBeRawPtr<CanvasGradient>); 52c1847b1379d12d0e05df27436bf19a9b1bf12deaTorne (Richard Coles) static PassRefPtrWillBeRawPtr<CanvasStyle> createFromPattern(PassRefPtrWillBeRawPtr<CanvasPattern>); 535c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 545c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) bool isCurrentColor() const { return m_type == CurrentColor || m_type == CurrentColorWithOverrideAlpha; } 555c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) bool hasOverrideAlpha() const { return m_type == CurrentColorWithOverrideAlpha; } 565c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) float overrideAlpha() const { ASSERT(m_type == CurrentColorWithOverrideAlpha); return m_overrideAlpha; } 575c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 585c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) String color() const { ASSERT(m_type == RGBA || m_type == CMYKA); return Color(m_rgba).serialized(); } 595c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) CanvasGradient* canvasGradient() const { return m_gradient.get(); } 605c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) CanvasPattern* canvasPattern() const { return m_pattern.get(); } 615c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 625c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) void applyFillColor(GraphicsContext*); 635c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) void applyStrokeColor(GraphicsContext*); 645c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 655c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) bool isEquivalentColor(const CanvasStyle&) const; 665c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) bool isEquivalentRGBA(float r, float g, float b, float a) const; 675c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) bool isEquivalentCMYKA(float c, float m, float y, float k, float a) const; 685c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 69c1847b1379d12d0e05df27436bf19a9b1bf12deaTorne (Richard Coles) void trace(Visitor*); 70c1847b1379d12d0e05df27436bf19a9b1bf12deaTorne (Richard Coles) 715c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) private: 725c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) enum Type { RGBA, CMYKA, Gradient, ImagePattern, CurrentColor, CurrentColorWithOverrideAlpha }; 735c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 745c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) CanvasStyle(Type, float overrideAlpha = 0); 755c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) CanvasStyle(RGBA32 rgba); 765c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) CanvasStyle(float grayLevel, float alpha); 775c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) CanvasStyle(float r, float g, float b, float a); 785c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) CanvasStyle(float c, float m, float y, float k, float a); 79c1847b1379d12d0e05df27436bf19a9b1bf12deaTorne (Richard Coles) CanvasStyle(PassRefPtrWillBeRawPtr<CanvasGradient>); 80c1847b1379d12d0e05df27436bf19a9b1bf12deaTorne (Richard Coles) CanvasStyle(PassRefPtrWillBeRawPtr<CanvasPattern>); 815c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 825c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) Type m_type; 835c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 845c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) union { 855c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) RGBA32 m_rgba; 865c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) float m_overrideAlpha; 875c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) }; 885c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 89c1847b1379d12d0e05df27436bf19a9b1bf12deaTorne (Richard Coles) RefPtrWillBeMember<CanvasGradient> m_gradient; 90c1847b1379d12d0e05df27436bf19a9b1bf12deaTorne (Richard Coles) RefPtrWillBeMember<CanvasPattern> m_pattern; 915c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 925c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) struct CMYKAValues { 935c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) CMYKAValues() : c(0), m(0), y(0), k(0), a(0) { } 945c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) CMYKAValues(float cyan, float magenta, float yellow, float black, float alpha) : c(cyan), m(magenta), y(yellow), k(black), a(alpha) { } 955c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) float c; 965c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) float m; 975c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) float y; 985c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) float k; 995c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) float a; 1005c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } m_cmyka; 1015c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) }; 1025c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1035c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) RGBA32 currentColor(HTMLCanvasElement*); 1045c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) bool parseColorOrCurrentColor(RGBA32& parsedColor, const String& colorString, HTMLCanvasElement*); 1055c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 106c1847b1379d12d0e05df27436bf19a9b1bf12deaTorne (Richard Coles)} // namespace blink 1075c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1085c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#endif 109