2 * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
4 * Portions are Copyright (C) 1998 Netscape Communications Corporation.
7 * Robert O'Callahan <roc+@cs.cmu.edu>
8 * David Baron <dbaron@fas.harvard.edu>
9 * Christian Biesinger <cbiesinger@web.de>
10 * Randall Jesup <rjesup@wgate.com>
11 * Roland Mainz <roland.mainz@informatik.med.uni-giessen.de>
12 * Josh Soref <timeless@mac.com>
13 * Boris Zbarsky <bzbarsky@mit.edu>
15 * This library is free software; you can redistribute it and/or
16 * modify it under the terms of the GNU Lesser General Public
17 * License as published by the Free Software Foundation; either
18 * version 2.1 of the License, or (at your option) any later version.
20 * This library is distributed in the hope that it will be useful,
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
23 * Lesser General Public License for more details.
25 * You should have received a copy of the GNU Lesser General Public
26 * License along with this library; if not, write to the Free Software
27 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
29 * Alternatively, the contents of this file may be used under the terms
30 * of either the Mozilla Public License Version 1.1, found at
31 * http://www.mozilla.org/MPL/ (the "MPL") or the GNU General Public
32 * License Version 2.0, found at http://www.fsf.org/copyleft/gpl.html
33 * (the "GPL"), in which case the provisions of the MPL or the GPL are
34 * applicable instead of those above. If you wish to allow use of your
35 * version of this file only under the terms of one of those two
36 * licenses (the MPL or the GPL) and not to allow others to use your
37 * version of this file under the LGPL, indicate your decision by
38 * deletingthe provisions above and replace them with the notice and
39 * other provisions required by the MPL or the GPL, as the case may be.
40 * If you do not delete the provisions above, a recipient may use your
41 * version of this file under any of the LGPL, the MPL or the GPL.
45 #include "core/rendering/RenderLayerReflectionInfo.h"
47 #include "core/frame/UseCounter.h"
48 #include "core/rendering/RenderLayer.h"
49 #include "core/rendering/RenderReplica.h"
50 #include "core/rendering/style/RenderStyle.h"
51 #include "platform/transforms/ScaleTransformOperation.h"
52 #include "platform/transforms/TranslateTransformOperation.h"
54 #include "wtf/RefPtr.h"
58 RenderLayerReflectionInfo::RenderLayerReflectionInfo(RenderBox& renderer)
60 , m_isPaintingInsideReflection(false)
62 UseCounter::count(box().document(), UseCounter::Reflection);
64 m_reflection = RenderReplica::createAnonymous(&box().document());
65 m_reflection->setParent(m_box); // We create a 1-way connection.
68 void RenderLayerReflectionInfo::destroy()
70 if (!m_reflection->documentBeingDestroyed())
71 m_reflection->removeLayers(box().layer());
73 m_reflection->setParent(0);
74 m_reflection->destroy();
75 m_reflection = nullptr;
78 void RenderLayerReflectionInfo::trace(Visitor* visitor)
80 visitor->trace(m_box);
81 visitor->trace(m_reflection);
84 RenderLayer* RenderLayerReflectionInfo::reflectionLayer() const
86 return m_reflection->layer();
89 void RenderLayerReflectionInfo::updateAfterStyleChange(const RenderStyle* oldStyle)
91 RefPtr<RenderStyle> newStyle = RenderStyle::create();
92 newStyle->inheritFrom(box().style());
94 // Map in our transform.
95 TransformOperations transform;
96 switch (box().style()->boxReflect()->direction()) {
98 transform.operations().append(TranslateTransformOperation::create(Length(0, Fixed),
99 Length(100., Percent), TransformOperation::Translate));
100 transform.operations().append(TranslateTransformOperation::create(Length(0, Fixed),
101 box().style()->boxReflect()->offset(), TransformOperation::Translate));
102 transform.operations().append(ScaleTransformOperation::create(1.0, -1.0, ScaleTransformOperation::Scale));
105 case ReflectionAbove:
106 transform.operations().append(ScaleTransformOperation::create(1.0, -1.0, ScaleTransformOperation::Scale));
107 transform.operations().append(TranslateTransformOperation::create(Length(0, Fixed),
108 Length(100., Percent), TransformOperation::Translate));
109 transform.operations().append(TranslateTransformOperation::create(Length(0, Fixed),
110 box().style()->boxReflect()->offset(), TransformOperation::Translate));
113 case ReflectionRight:
114 transform.operations().append(TranslateTransformOperation::create(Length(100., Percent),
115 Length(0, Fixed), TransformOperation::Translate));
116 transform.operations().append(TranslateTransformOperation::create(
117 box().style()->boxReflect()->offset(), Length(0, Fixed), TransformOperation::Translate));
118 transform.operations().append(ScaleTransformOperation::create(-1.0, 1.0, ScaleTransformOperation::Scale));
122 transform.operations().append(ScaleTransformOperation::create(-1.0, 1.0, ScaleTransformOperation::Scale));
123 transform.operations().append(TranslateTransformOperation::create(Length(100., Percent),
124 Length(0, Fixed), TransformOperation::Translate));
125 transform.operations().append(TranslateTransformOperation::create(
126 box().style()->boxReflect()->offset(), Length(0, Fixed), TransformOperation::Translate));
129 newStyle->setTransform(transform);
132 newStyle->setMaskBoxImage(box().style()->boxReflect()->mask());
134 m_reflection->setStyle(newStyle.release());
137 void RenderLayerReflectionInfo::paint(GraphicsContext* context, const LayerPaintingInfo& paintingInfo, PaintLayerFlags flags)
139 if (m_isPaintingInsideReflection)
142 // Mark that we are now inside replica painting.
143 m_isPaintingInsideReflection = true;
144 reflectionLayer()->paintLayer(context, paintingInfo, flags);
145 m_isPaintingInsideReflection = false;
148 String RenderLayerReflectionInfo::debugName() const
150 return box().debugName() + " (reflection)";