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 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 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 "CanvasGradient.h"
29
30#include "CanvasStyle.h"
31
32namespace WebCore {
33
34CanvasGradient::CanvasGradient(const FloatPoint& p0, const FloatPoint& p1)
35 : m_gradient(Gradient::create(Gradient::LinearData { p0, p1 }))
36{
37}
38
39CanvasGradient::CanvasGradient(const FloatPoint& p0, float r0, const FloatPoint& p1, float r1)
40 : m_gradient(Gradient::create(Gradient::RadialData { p0, p1, r0, r1, 1 }))
41{
42}
43
44ExceptionOr<void> CanvasGradient::addColorStop(float value, const String& colorString)
45{
46 if (!(value >= 0 && value <= 1))
47 return Exception { IndexSizeError };
48
49 // Passing null for canvas ensures that currentColor is treated as black,
50 // as required by the standard.
51 Color color = parseColorOrCurrentColor(colorString, nullptr /*canvas*/);
52 if (!color.isValid()) {
53#if ENABLE(DASHBOARD_SUPPORT)
54 if (m_dashboardCompatibilityMode)
55 return { };
56#endif
57 return Exception { SyntaxError };
58 }
59
60 m_gradient->addColorStop(value, color);
61 return { };
62}
63
64}
65