Remove <canvas>

sky/engine/core/html/canvas/CanvasStyle.cpp

-/*
- * Copyright (C) 2006, 2008 Apple Inc. All rights reserved.
- * Copyright (C) 2008, 2010 Nokia Corporation and/or its subsidiary(-ies)
- * Copyright (C) 2007 Alp Toker <alp@atoker.com>
- * Copyright (C) 2008 Eric Seidel <eric@webkit.org>
- *
- * 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 COMPUTER, 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 COMPUTER, 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.
- */
-
-#include "sky/engine/config.h"
-#include "sky/engine/core/html/canvas/CanvasStyle.h"
-
-#include "gen/sky/core/CSSPropertyNames.h"
-#include "sky/engine/core/css/StylePropertySet.h"
-#include "sky/engine/core/css/parser/BisonCSSParser.h"
-#include "sky/engine/core/html/HTMLCanvasElement.h"
-#include "sky/engine/core/html/canvas/CanvasGradient.h"
-#include "sky/engine/core/html/canvas/CanvasPattern.h"
-#include "sky/engine/platform/graphics/GraphicsContext.h"
-#include "sky/engine/wtf/PassRefPtr.h"
-
-namespace blink {
-
-enum ColorParseResult { ParsedRGBA, ParsedCurrentColor, ParsedSystemColor, ParseFailed };
-
-static ColorParseResult parseColor(RGBA32& parsedColor, const String& colorString)
-{
-    if (equalIgnoringCase(colorString, "currentcolor"))
-        return ParsedCurrentColor;
-    const bool useStrictParsing = true;
-    if (BisonCSSParser::parseColor(parsedColor, colorString, useStrictParsing))
-        return ParsedRGBA;
-    if (BisonCSSParser::parseSystemColor(parsedColor, colorString))
-        return ParsedSystemColor;
-    return ParseFailed;
-}
-
-RGBA32 currentColor(HTMLCanvasElement* canvas)
-{
-    if (!canvas || !canvas->inDocument() || !canvas->inlineStyle())
-        return Color::black;
-    RGBA32 rgba = Color::black;
-    BisonCSSParser::parseColor(rgba, canvas->inlineStyle()->getPropertyValue(CSSPropertyColor));
-    return rgba;
-}
-
-bool parseColorOrCurrentColor(RGBA32& parsedColor, const String& colorString, HTMLCanvasElement* canvas)
-{
-    ColorParseResult parseResult = parseColor(parsedColor, colorString);
-    switch (parseResult) {
-    case ParsedRGBA:
-    case ParsedSystemColor:
-        return true;
-    case ParsedCurrentColor:
-        parsedColor = currentColor(canvas);
-        return true;
-    case ParseFailed:
-        return false;
-    default:
-        ASSERT_NOT_REACHED();
-        return false;
-    }
-}
-
-CanvasStyle::CanvasStyle(Type type, float overrideAlpha)
-    : m_type(type)
-    , m_overrideAlpha(overrideAlpha)
-{
-}
-
-CanvasStyle::CanvasStyle(RGBA32 rgba)
-    : m_type(RGBA)
-    , m_rgba(rgba)
-{
-}
-
-CanvasStyle::CanvasStyle(float grayLevel, float alpha)
-    : m_type(RGBA)
-    , m_rgba(makeRGBA32FromFloats(grayLevel, grayLevel, grayLevel, alpha))
-{
-}
-
-CanvasStyle::CanvasStyle(float r, float g, float b, float a)
-    : m_type(RGBA)
-    , m_rgba(makeRGBA32FromFloats(r, g, b, a))
-{
-}
-
-CanvasStyle::CanvasStyle(float c, float m, float y, float k, float a)
-    : m_type(CMYKA)
-    , m_rgba(makeRGBAFromCMYKA(c, m, y, k, a))
-    , m_cmyka(c, m, y, k, a)
-{
-}
-
-CanvasStyle::CanvasStyle(PassRefPtr<CanvasGradient> gradient)
-    : m_type(Gradient)
-    , m_gradient(gradient)
-{
-}
-
-CanvasStyle::CanvasStyle(PassRefPtr<CanvasPattern> pattern)
-    : m_type(ImagePattern)
-    , m_pattern(pattern)
-{
-}
-
-PassRefPtr<CanvasStyle> CanvasStyle::createFromString(const String& color)
-{
-    RGBA32 rgba;
-    ColorParseResult parseResult = parseColor(rgba, color);
-    switch (parseResult) {
-    case ParsedRGBA:
-    case ParsedSystemColor:
-        return adoptRef(new CanvasStyle(rgba));
-    case ParsedCurrentColor:
-        return adoptRef(new CanvasStyle(CurrentColor));
-    case ParseFailed:
-        return nullptr;
-    default:
-        ASSERT_NOT_REACHED();
-        return nullptr;
-    }
-}
-
-PassRefPtr<CanvasStyle> CanvasStyle::createFromStringWithOverrideAlpha(const String& color, float alpha)
-{
-    RGBA32 rgba;
-    ColorParseResult parseResult = parseColor(rgba, color);
-    switch (parseResult) {
-    case ParsedRGBA:
-        return adoptRef(new CanvasStyle(colorWithOverrideAlpha(rgba, alpha)));
-    case ParsedCurrentColor:
-        return adoptRef(new CanvasStyle(CurrentColorWithOverrideAlpha, alpha));
-    case ParseFailed:
-        return nullptr;
-    default:
-        ASSERT_NOT_REACHED();
-        return nullptr;
-    }
-}
-
-PassRefPtr<CanvasStyle> CanvasStyle::createFromGradient(PassRefPtr<CanvasGradient> gradient)
-{
-    if (!gradient)
-        return nullptr;
-    return adoptRef(new CanvasStyle(gradient));
-}
-
-PassRefPtr<CanvasStyle> CanvasStyle::createFromPattern(PassRefPtr<CanvasPattern> pattern)
-{
-    if (!pattern)
-        return nullptr;
-    return adoptRef(new CanvasStyle(pattern));
-}
-
-bool CanvasStyle::isEquivalentColor(const CanvasStyle& other) const
-{
-    if (m_type != other.m_type)
-        return false;
-
-    switch (m_type) {
-    case RGBA:
-        return m_rgba == other.m_rgba;
-    case CMYKA:
-        return m_cmyka.c == other.m_cmyka.c
-            && m_cmyka.m == other.m_cmyka.m
-            && m_cmyka.y == other.m_cmyka.y
-            && m_cmyka.k == other.m_cmyka.k
-            && m_cmyka.a == other.m_cmyka.a;
-    case Gradient:
-    case ImagePattern:
-    case CurrentColor:
-    case CurrentColorWithOverrideAlpha:
-        return false;
-    }
-
-    ASSERT_NOT_REACHED();
-    return false;
-}
-
-bool CanvasStyle::isEquivalentRGBA(float r, float g, float b, float a) const
-{
-    if (m_type != RGBA)
-        return false;
-
-    return m_rgba == makeRGBA32FromFloats(r, g, b, a);
-}
-
-bool CanvasStyle::isEquivalentCMYKA(float c, float m, float y, float k, float a) const
-{
-    if (m_type != CMYKA)
-        return false;
-
-    return c == m_cmyka.c
-        && m == m_cmyka.m
-        && y == m_cmyka.y
-        && k == m_cmyka.k
-        && a == m_cmyka.a;
-}
-
-void CanvasStyle::applyStrokeColor(GraphicsContext* context)
-{
-    if (!context)
-        return;
-    switch (m_type) {
-    case RGBA:
-        context->setStrokeColor(m_rgba);
-        break;
-    case CMYKA: {
-        // FIXME: Do this through platform-independent GraphicsContext API.
-        // We'll need a fancier Color abstraction to support CMYKA correctly
-        context->setStrokeColor(m_rgba);
-        break;
-    }
-    case Gradient:
-        context->setStrokeGradient(canvasGradient()->gradient());
-        break;
-    case ImagePattern:
-        context->setStrokePattern(canvasPattern()->pattern());
-        break;
-    case CurrentColor:
-    case CurrentColorWithOverrideAlpha:
-        ASSERT_NOT_REACHED();
-        break;
-    }
-}
-
-void CanvasStyle::applyFillColor(GraphicsContext* context)
-{
-    if (!context)
-        return;
-    switch (m_type) {
-    case RGBA:
-        context->setFillColor(m_rgba);
-        break;
-    case CMYKA: {
-        // FIXME: Do this through platform-independent GraphicsContext API.
-        // We'll need a fancier Color abstraction to support CMYKA correctly
-        context->setFillColor(m_rgba);
-        break;
-    }
-    case Gradient:
-        context->setFillGradient(canvasGradient()->gradient());
-        break;
-    case ImagePattern:
-        context->setFillPattern(canvasPattern()->pattern());
-        break;
-    case CurrentColor:
-    case CurrentColorWithOverrideAlpha:
-        ASSERT_NOT_REACHED();
-        break;
-    }
-}
-
-}