| /* |
| * 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()); |
| break; |
| } |
| RGBA32 color = 0; // default is transparent black |
| if (CSSParser::parseColor(color, m_color)) |
| context->setStrokeColor(color); |
| break; |
| } |
| case ColorStringWithAlpha: { |
| Color c = Color(m_color); |
| if (c.isValid()) { |
| context->setStrokeColor(colorWithOverrideAlpha(c.rgb(), m_alpha)); |
| break; |
| } |
| RGBA32 color = 0; // default is transparent black |
| if (CSSParser::parseColor(color, m_color)) |
| context->setStrokeColor(colorWithOverrideAlpha(color, m_alpha)); |
| 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)); |
| break; |
| case RGBA: |
| context->setStrokeColor(Color(m_red, m_green, m_blue, m_alpha)); |
| 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)); |
| #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: { |
| Color c = Color(m_color); |
| if (c.isValid()){ |
| context->setFillColor(c.rgb()); |
| break; |
| } |
| RGBA32 rgba = 0; // default is transparent black |
| if (CSSParser::parseColor(rgba, m_color)) |
| context->setFillColor(rgba); |
| break; |
| } |
| case ColorStringWithAlpha: { |
| Color c = Color(m_color); |
| if (c.isValid()){ |
| context->setFillColor(colorWithOverrideAlpha(c.rgb(), m_alpha)); |
| break; |
| } |
| RGBA32 color = 0; // default is transparent black |
| if (CSSParser::parseColor(color, m_color)) |
| context->setFillColor(colorWithOverrideAlpha(color, m_alpha)); |
| 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)); |
| break; |
| case RGBA: |
| context->setFillColor(Color(m_red, m_green, m_blue, m_alpha)); |
| 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)); |
| #endif |
| break; |
| } |
| case Gradient: |
| context->setFillGradient(canvasGradient()->gradient()); |
| break; |
| case ImagePattern: |
| context->setFillPattern(canvasPattern()->pattern()); |
| break; |
| } |
| } |
| |
| } |
