2 * Copyright (C) 2013 Google Inc. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
8 * * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
14 * * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34 #include "core/rendering/style/ShadowData.h"
35 #include "platform/geometry/LayoutRect.h"
36 #include "platform/graphics/DrawLooperBuilder.h"
37 #include "wtf/PassOwnPtr.h"
38 #include "wtf/RefCounted.h"
39 #include "wtf/Vector.h"
46 typedef Vector<ShadowData, 1> ShadowDataVector;
48 // These are used to store shadows in specified order, but we usually want to
49 // iterate over them backwards as the first-specified shadow is painted on top.
50 class ShadowList : public RefCounted<ShadowList> {
52 // This consumes passed in vector.
53 static PassRefPtr<ShadowList> adopt(ShadowDataVector& shadows)
55 return adoptRef(new ShadowList(shadows));
57 const ShadowDataVector& shadows() const { return m_shadows; }
58 bool operator==(const ShadowList& o) const { return m_shadows == o.m_shadows; }
59 bool operator!=(const ShadowList& o) const { return !(*this == o); }
61 static PassRefPtr<ShadowList> blend(const ShadowList* from, const ShadowList* to, double progress);
63 void adjustRectForShadow(LayoutRect&) const;
64 void adjustRectForShadow(FloatRect&) const;
66 PassOwnPtr<DrawLooperBuilder> createDrawLooper(DrawLooperBuilder::ShadowAlphaMode, bool isHorizontal = true) const;
69 ShadowList(ShadowDataVector& shadows)
71 // If we have no shadows, we use a null ShadowList
72 ASSERT(!shadows.isEmpty());
73 m_shadows.swap(shadows);
74 m_shadows.shrinkToFit();
76 ShadowDataVector m_shadows;
81 #endif // ShadowList_h