| /* | |
| * Copyright (C) 2006, 2008 Apple Inc. All rights reserved. | |
| * Copyright (C) 2008 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 "config.h" | |
| #include "CanvasStyle.h" | |
| #include "CSSParser.h" | |
| #include "CanvasGradient.h" | |
| #include "CanvasPattern.h" | |
| #include "GraphicsContext.h" | |
| #include <wtf/PassRefPtr.h> | |
| #if PLATFORM(CG) | |
| #include <CoreGraphics/CGContext.h> | |
| #endif | |
| #if PLATFORM(QT) | |
| #include <QPainter> | |
| #include <QBrush> | |
| #include <QPen> | |
| #include <QColor> | |
| #endif | |
| namespace WebCore { | |
| CanvasStyle::CanvasStyle(const String& color) | |
| : m_type(ColorString) | |
| , m_color(color) | |
| { | |
| } | |
| CanvasStyle::CanvasStyle(float grayLevel) | |
| : m_type(GrayLevel) | |
| , m_alpha(1) | |
| , m_grayLevel(grayLevel) | |
| { | |
| } | |
| CanvasStyle::CanvasStyle(const String& color, float alpha) | |
| : m_type(ColorStringWithAlpha) | |
| , m_color(color) | |
| , m_alpha(alpha) | |
| { | |
| } | |
| CanvasStyle::CanvasStyle(float grayLevel, float alpha) | |
| : m_type(GrayLevel) | |
| , m_alpha(alpha) | |
| , m_grayLevel(grayLevel) | |
| { | |
| } | |
| CanvasStyle::CanvasStyle(float r, float g, float b, float a) | |
| : m_type(RGBA) | |
| , m_alpha(a) | |
| , m_red(r) | |
| , m_green(g) | |
| , m_blue(b) | |
| { | |
| } | |
| CanvasStyle::CanvasStyle(float c, float m, float y, float k, float a) | |
| : m_type(CMYKA) | |
| , m_alpha(a) | |
| , m_cyan(c) | |
| , m_magenta(m) | |
| , m_yellow(y) | |
| , m_black(k) | |
| { | |
| } | |
| CanvasStyle::CanvasStyle(PassRefPtr<CanvasGradient> gradient) | |
| : m_type(gradient ? Gradient : ColorString) | |
| , m_gradient(gradient) | |
| { | |
| } | |
| CanvasStyle::CanvasStyle(PassRefPtr<CanvasPattern> pattern) | |
| : m_type(pattern ? ImagePattern : ColorString) | |
| , m_pattern(pattern) | |
| { | |
| } | |
| void CanvasStyle::applyStrokeColor(GraphicsContext* context) | |
| { | |
| if (!context) | |
| return; | |
| switch (m_type) { | |
| case ColorString: { | |
| Color c = Color(m_color); | |
| if (c.isValid()) { | |
| context->setStrokeColor(c.rgb(), DeviceColorSpace); | |
| break; | |
| } | |
| RGBA32 color = 0; // default is transparent black | |
| if (CSSParser::parseColor(color, m_color)) | |
| context->setStrokeColor(color, DeviceColorSpace); | |
| break; | |
| } | |
| case ColorStringWithAlpha: { | |
| Color c = Color(m_color); | |
| if (c.isValid()) { | |
| context->setStrokeColor(colorWithOverrideAlpha(c.rgb(), m_alpha), DeviceColorSpace); | |
| break; | |
| } | |
| RGBA32 color = 0; // default is transparent black | |
| if (CSSParser::parseColor(color, m_color)) | |
| context->setStrokeColor(colorWithOverrideAlpha(color, m_alpha), DeviceColorSpace); | |
| break; | |
| } | |
| case GrayLevel: | |
| // We're only supporting 255 levels of gray here. Since this isn't | |
| // even part of HTML5, I don't expect anyone will care. If they do | |
| // we'll make a fancier Color abstraction. | |
| context->setStrokeColor(Color(m_grayLevel, m_grayLevel, m_grayLevel, m_alpha), DeviceColorSpace); | |
| break; | |
| case RGBA: | |
| context->setStrokeColor(Color(m_red, m_green, m_blue, m_alpha), DeviceColorSpace); | |
| break; | |
| case CMYKA: { | |
| // FIXME: Do this through platform-independent GraphicsContext API. | |
| // We'll need a fancier Color abstraction to support CYMKA correctly | |
| #if PLATFORM(CG) | |
| CGContextSetCMYKStrokeColor(context->platformContext(), m_cyan, m_magenta, m_yellow, m_black, m_alpha); | |
| #elif PLATFORM(QT) | |
| QPen currentPen = context->platformContext()->pen(); | |
| QColor clr; | |
| clr.setCmykF(m_cyan, m_magenta, m_yellow, m_black, m_alpha); | |
| currentPen.setColor(clr); | |
| context->platformContext()->setPen(currentPen); | |
| #else | |
| context->setStrokeColor(Color(m_cyan, m_magenta, m_yellow, m_black, m_alpha), DeviceColorSpace); | |
| #endif | |
| break; | |
| } | |
| case Gradient: | |
| context->setStrokeGradient(canvasGradient()->gradient()); | |
| break; | |
| case ImagePattern: | |
| context->setStrokePattern(canvasPattern()->pattern()); | |
| break; | |
| } | |
| } | |
| void CanvasStyle::applyFillColor(GraphicsContext* context) | |
| { | |
| if (!context) | |
| return; | |
| switch (m_type) { | |
| case ColorString: { | |
| RGBA32 rgba = 0; // default is transparent black | |
| if (CSSParser::parseColor(rgba, m_color)) | |
| context->setFillColor(rgba, DeviceColorSpace); | |
| break; | |
| } | |
| case ColorStringWithAlpha: { | |
| RGBA32 color = 0; // default is transparent black | |
| if (CSSParser::parseColor(color, m_color)) | |
| context->setFillColor(colorWithOverrideAlpha(color, m_alpha), DeviceColorSpace); | |
| break; | |
| } | |
| case GrayLevel: | |
| // We're only supporting 255 levels of gray here. Since this isn't | |
| // even part of HTML5, I don't expect anyone will care. If they do | |
| // we'll make a fancier Color abstraction. | |
| context->setFillColor(Color(m_grayLevel, m_grayLevel, m_grayLevel, m_alpha), DeviceColorSpace); | |
| break; | |
| case RGBA: | |
| context->setFillColor(Color(m_red, m_green, m_blue, m_alpha), DeviceColorSpace); | |
| break; | |
| case CMYKA: { | |
| // FIXME: Do this through platform-independent GraphicsContext API. | |
| // We'll need a fancier Color abstraction to support CYMKA correctly | |
| #if PLATFORM(CG) | |
| CGContextSetCMYKFillColor(context->platformContext(), m_cyan, m_magenta, m_yellow, m_black, m_alpha); | |
| #elif PLATFORM(QT) | |
| QBrush currentBrush = context->platformContext()->brush(); | |
| QColor clr; | |
| clr.setCmykF(m_cyan, m_magenta, m_yellow, m_black, m_alpha); | |
| currentBrush.setColor(clr); | |
| context->platformContext()->setBrush(currentBrush); | |
| #else | |
| context->setFillColor(Color(m_cyan, m_magenta, m_yellow, m_black, m_alpha), DeviceColorSpace); | |
| #endif | |
| break; | |
| } | |
| case Gradient: | |
| context->setFillGradient(canvasGradient()->gradient()); | |
| break; | |
| case ImagePattern: | |
| context->setFillPattern(canvasPattern()->pattern()); | |
| break; | |
| } | |
| } | |
| } |