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1 /* | |
2 * Copyright (C) 2010 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'' AND AN
Y | |
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | |
15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
16 * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR AN
Y | |
17 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | |
18 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
19 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND O
N | |
20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
22 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
23 */ | |
24 | |
25 #include "config.h" | |
26 #include "core/layout/LayoutFullScreen.h" | |
27 | |
28 #include "core/dom/Fullscreen.h" | |
29 #include "core/frame/FrameHost.h" | |
30 #include "core/frame/Settings.h" | |
31 #include "core/layout/LayoutBlockFlow.h" | |
32 #include "core/page/Page.h" | |
33 | |
34 #include "public/platform/WebScreenInfo.h" | |
35 | |
36 using namespace blink; | |
37 | |
38 class LayoutFullScreenPlaceholder final : public LayoutBlockFlow { | |
39 public: | |
40 LayoutFullScreenPlaceholder(LayoutFullScreen* owner) | |
41 : LayoutBlockFlow(nullptr) | |
42 , m_owner(owner) | |
43 { | |
44 setDocumentForAnonymous(&owner->document()); | |
45 } | |
46 private: | |
47 bool isOfType(LayoutObjectType type) const override { return type == LayoutO
bjectLayoutFullScreenPlaceholder || LayoutBlockFlow::isOfType(type); } | |
48 void willBeDestroyed() override; | |
49 LayoutFullScreen* m_owner; | |
50 }; | |
51 | |
52 void LayoutFullScreenPlaceholder::willBeDestroyed() | |
53 { | |
54 m_owner->setPlaceholder(nullptr); | |
55 LayoutBlockFlow::willBeDestroyed(); | |
56 } | |
57 | |
58 LayoutFullScreen::LayoutFullScreen() | |
59 : LayoutFlexibleBox(nullptr) | |
60 , m_placeholder(nullptr) | |
61 { | |
62 setReplaced(false); | |
63 } | |
64 | |
65 LayoutFullScreen* LayoutFullScreen::createAnonymous(Document* document) | |
66 { | |
67 LayoutFullScreen* layoutObject = new LayoutFullScreen(); | |
68 layoutObject->setDocumentForAnonymous(document); | |
69 return layoutObject; | |
70 } | |
71 | |
72 void LayoutFullScreen::willBeDestroyed() | |
73 { | |
74 if (m_placeholder) { | |
75 remove(); | |
76 if (!m_placeholder->beingDestroyed()) | |
77 m_placeholder->destroy(); | |
78 ASSERT(!m_placeholder); | |
79 } | |
80 | |
81 // LayoutObjects are unretained, so notify the document (which holds a point
er to a LayoutFullScreen) | |
82 // if its LayoutFullScreen is destroyed. | |
83 Fullscreen& fullscreen = Fullscreen::from(document()); | |
84 if (fullscreen.fullScreenLayoutObject() == this) | |
85 fullscreen.fullScreenLayoutObjectDestroyed(); | |
86 | |
87 LayoutFlexibleBox::willBeDestroyed(); | |
88 } | |
89 | |
90 void LayoutFullScreen::updateStyle() | |
91 { | |
92 RefPtr<ComputedStyle> fullscreenStyle = ComputedStyle::create(); | |
93 | |
94 // Create a stacking context: | |
95 fullscreenStyle->setZIndex(INT_MAX); | |
96 | |
97 fullscreenStyle->setFontDescription(FontDescription()); | |
98 fullscreenStyle->font().update(nullptr); | |
99 | |
100 fullscreenStyle->setDisplay(FLEX); | |
101 fullscreenStyle->setJustifyContentPosition(ContentPositionCenter); | |
102 fullscreenStyle->setAlignItemsPosition(ItemPositionCenter); | |
103 fullscreenStyle->setFlexDirection(FlowColumn); | |
104 | |
105 fullscreenStyle->setPosition(FixedPosition); | |
106 fullscreenStyle->setLeft(Length(0, blink::Fixed)); | |
107 fullscreenStyle->setTop(Length(0, blink::Fixed)); | |
108 IntSize viewportSize = document().page()->frameHost().visualViewport().size(
); | |
109 fullscreenStyle->setWidth(Length(viewportSize.width(), blink::Fixed)); | |
110 fullscreenStyle->setHeight(Length(viewportSize.height(), blink::Fixed)); | |
111 | |
112 fullscreenStyle->setBackgroundColor(StyleColor(Color::black)); | |
113 | |
114 setStyle(fullscreenStyle); | |
115 } | |
116 | |
117 LayoutObject* LayoutFullScreen::wrapLayoutObject(LayoutObject* object, LayoutObj
ect* parent, Document* document) | |
118 { | |
119 // FIXME: We should not modify the structure of the layout tree during | |
120 // layout. crbug.com/370459 | |
121 DeprecatedDisableModifyLayoutTreeStructureAsserts disabler; | |
122 | |
123 LayoutFullScreen* fullscreenLayoutObject = LayoutFullScreen::createAnonymous
(document); | |
124 fullscreenLayoutObject->updateStyle(); | |
125 if (parent && !parent->isChildAllowed(fullscreenLayoutObject, fullscreenLayo
utObject->styleRef())) { | |
126 fullscreenLayoutObject->destroy(); | |
127 return nullptr; | |
128 } | |
129 if (object) { | |
130 // |object->parent()| can be null if the object is not yet attached | |
131 // to |parent|. | |
132 if (LayoutObject* parent = object->parent()) { | |
133 LayoutBlock* containingBlock = object->containingBlock(); | |
134 ASSERT(containingBlock); | |
135 // Since we are moving the |object| to a new parent |fullscreenLayou
tObject|, | |
136 // the line box tree underneath our |containingBlock| is not longer
valid. | |
137 containingBlock->deleteLineBoxTree(); | |
138 | |
139 parent->addChild(fullscreenLayoutObject, object); | |
140 object->remove(); | |
141 | |
142 // Always just do a full layout to ensure that line boxes get delete
d properly. | |
143 // Because objects moved from |parent| to |fullscreenLayoutObject|,
we want to | |
144 // make new line boxes instead of leaving the old ones around. | |
145 parent->setNeedsLayoutAndPrefWidthsRecalcAndFullPaintInvalidation(La
youtInvalidationReason::Fullscreen); | |
146 containingBlock->setNeedsLayoutAndPrefWidthsRecalcAndFullPaintInvali
dation(LayoutInvalidationReason::Fullscreen); | |
147 } | |
148 fullscreenLayoutObject->addChild(object); | |
149 fullscreenLayoutObject->setNeedsLayoutAndPrefWidthsRecalcAndFullPaintInv
alidation(LayoutInvalidationReason::Fullscreen); | |
150 } | |
151 | |
152 ASSERT(document); | |
153 Fullscreen::from(*document).setFullScreenLayoutObject(fullscreenLayoutObject
); | |
154 return fullscreenLayoutObject; | |
155 } | |
156 | |
157 void LayoutFullScreen::unwrapLayoutObject() | |
158 { | |
159 // FIXME: We should not modify the structure of the layout tree during | |
160 // layout. crbug.com/370459 | |
161 DeprecatedDisableModifyLayoutTreeStructureAsserts disabler; | |
162 | |
163 if (parent()) { | |
164 for (LayoutObject* child = firstChild(); child; child = firstChild()) { | |
165 // We have to clear the override size, because as a flexbox, we | |
166 // may have set one on the child, and we don't want to leave that | |
167 // lying around on the child. | |
168 if (child->isBox()) | |
169 toLayoutBox(child)->clearOverrideSize(); | |
170 child->remove(); | |
171 parent()->addChild(child, this); | |
172 parent()->setNeedsLayoutAndPrefWidthsRecalcAndFullPaintInvalidation(
LayoutInvalidationReason::Fullscreen); | |
173 } | |
174 } | |
175 if (placeholder()) | |
176 placeholder()->remove(); | |
177 remove(); | |
178 destroy(); | |
179 } | |
180 | |
181 void LayoutFullScreen::setPlaceholder(LayoutBlock* placeholder) | |
182 { | |
183 m_placeholder = placeholder; | |
184 } | |
185 | |
186 void LayoutFullScreen::createPlaceholder(PassRefPtr<ComputedStyle> style, const
LayoutRect& frameRect) | |
187 { | |
188 if (style->width().isAuto()) | |
189 style->setWidth(Length(frameRect.width(), Fixed)); | |
190 if (style->height().isAuto()) | |
191 style->setHeight(Length(frameRect.height(), Fixed)); | |
192 | |
193 if (!m_placeholder) { | |
194 m_placeholder = new LayoutFullScreenPlaceholder(this); | |
195 m_placeholder->setStyle(style); | |
196 if (parent()) { | |
197 parent()->addChild(m_placeholder, this); | |
198 parent()->setNeedsLayoutAndPrefWidthsRecalcAndFullPaintInvalidation(
LayoutInvalidationReason::Fullscreen); | |
199 } | |
200 } else { | |
201 m_placeholder->setStyle(style); | |
202 } | |
203 } | |
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