1/*
2 * Copyright (C) 2012 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "config.h"
27#include "WebRenderLayer.h"
28
29#include "WebPage.h"
30#include "WebString.h"
31#include <WebCore/Frame.h>
32#include <WebCore/FrameLoader.h>
33#include <WebCore/FrameLoaderClient.h>
34#include <WebCore/RenderLayer.h>
35#include <WebCore/RenderLayerBacking.h>
36#include <WebCore/RenderView.h>
37#include <WebCore/StyledElement.h>
38
39using namespace WebCore;
40
41namespace WebKit {
42
43PassRefPtr<WebRenderLayer> WebRenderLayer::create(WebPage* page)
44{
45    Frame* mainFrame = page->mainFrame();
46    if (!mainFrame)
47        return 0;
48
49    if (!mainFrame->loader()->client()->hasHTMLView())
50        return 0;
51
52    RenderView* contentRenderer = mainFrame->contentRenderer();
53    if (!contentRenderer)
54        return 0;
55
56    RenderLayer* rootLayer = contentRenderer->layer();
57    if (!rootLayer)
58        return 0;
59
60    return adoptRef(new WebRenderLayer(rootLayer));
61}
62
63PassRefPtr<MutableArray> WebRenderLayer::createArrayFromLayerList(Vector<RenderLayer*>* list)
64{
65    if (!list || !list->size())
66        return 0;
67
68    RefPtr<MutableArray> array = MutableArray::create();
69    for (size_t i = 0; i < list->size(); ++i) {
70        RefPtr<WebRenderLayer> layer = adoptRef(new WebRenderLayer(list->at(i)));
71        array->append(layer.get());
72    }
73
74    return array.release();
75}
76
77WebRenderLayer::WebRenderLayer(RenderLayer* layer)
78{
79    m_renderer = WebRenderObject::create(layer->renderer());
80    m_isReflection = layer->isReflection();
81
82#if USE(ACCELERATED_COMPOSITING)
83    if (layer->isComposited()) {
84        RenderLayerBacking* backing = layer->backing();
85        m_isClipping = backing->hasClippingLayer();
86        m_isClipped = backing->hasAncestorClippingLayer();
87        switch (backing->compositingLayerType()) {
88        case NormalCompositingLayer:
89            m_compositingLayerType = Normal;
90            break;
91        case TiledCompositingLayer:
92            m_compositingLayerType = Tiled;
93            break;
94        case MediaCompositingLayer:
95            m_compositingLayerType = Media;
96            break;
97        case ContainerCompositingLayer:
98            m_compositingLayerType = Container;
99            break;
100        }
101    } else {
102#endif
103        m_isClipping = false;
104        m_isClipped = false;
105        m_compositingLayerType = None;
106#if USE(ACCELERATED_COMPOSITING)
107    }
108#endif
109
110    m_absoluteBoundingBox = layer->absoluteBoundingBox();
111
112    m_negativeZOrderList = createArrayFromLayerList(layer->negZOrderList());
113    m_normalFlowList = createArrayFromLayerList(layer->normalFlowList());
114    m_positiveZOrderList = createArrayFromLayerList(layer->posZOrderList());
115}
116
117} // namespace WebKit
118