1 /* 2 * Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved. 3 * Copyright (C) 2007 Alp Toker <alp (at) atoker.com> 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 #include "config.h" 28 #include "core/html/canvas/CanvasGradient.h" 29 30 #include "bindings/core/v8/ExceptionState.h" 31 #include "core/dom/ExceptionCode.h" 32 #include "core/html/canvas/CanvasPattern.h" 33 #include "core/html/canvas/CanvasStyle.h" 34 35 namespace blink { 36 37 CanvasGradient::CanvasGradient(const FloatPoint& p0, const FloatPoint& p1) 38 : m_gradient(Gradient::create(p0, p1)) 39 { 40 } 41 42 CanvasGradient::CanvasGradient(const FloatPoint& p0, float r0, const FloatPoint& p1, float r1) 43 : m_gradient(Gradient::create(p0, r0, p1, r1)) 44 { 45 } 46 47 void CanvasGradient::addColorStop(float value, const String& color, ExceptionState& exceptionState) 48 { 49 if (!(value >= 0 && value <= 1.0f)) { 50 exceptionState.throwDOMException(IndexSizeError, "The provided value (" + String::number(value) + ") is outside the range (0.0, 1.0)."); 51 return; 52 } 53 54 RGBA32 rgba = 0; 55 if (!parseColorOrCurrentColor(rgba, color, 0 /*canvas*/)) { 56 exceptionState.throwDOMException(SyntaxError, "The value provided ('" + color + "') could not be parsed as a color."); 57 return; 58 } 59 60 m_gradient->addColorStop(value, Color(rgba)); 61 } 62 63 } // namespace 64
