1/*
2 * Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved.
3 * Copyright (C) 2007 Alp Toker <alp@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
35namespace blink {
36
37CanvasGradient::CanvasGradient(const FloatPoint& p0, const FloatPoint& p1)
38    : m_gradient(Gradient::create(p0, p1))
39{
40}
41
42CanvasGradient::CanvasGradient(const FloatPoint& p0, float r0, const FloatPoint& p1, float r1)
43    : m_gradient(Gradient::create(p0, r0, p1, r1))
44{
45}
46
47void 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