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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 | |
| 14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 16 * ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE | |
| 17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR | |
| 19 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER | |
| 20 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH | |
| 23 * DAMAGE. | |
| 24 */ | |
| 25 | |
| 26 #include "core/layout/LayoutFullScreen.h" | |
| 27 | |
| 28 #include "core/dom/Fullscreen.h" | |
| 29 #include "core/frame/FrameHost.h" | |
| 30 #include "core/frame/VisualViewport.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), m_owner(owner) { | |
| 42 setDocumentForAnonymous(&owner->document()); | |
| 43 } | |
| 44 | |
| 45 // Must call setStyleWithWritingModeOfParent() instead. | |
| 46 void setStyle(PassRefPtr<ComputedStyle>) = delete; | |
| 47 | |
| 48 private: | |
| 49 bool isOfType(LayoutObjectType type) const override { | |
| 50 return type == LayoutObjectLayoutFullScreenPlaceholder || | |
| 51 LayoutBlockFlow::isOfType(type); | |
| 52 } | |
| 53 bool anonymousHasStylePropagationOverride() override { return true; } | |
| 54 | |
| 55 void willBeDestroyed() override; | |
| 56 LayoutFullScreen* m_owner; | |
| 57 }; | |
| 58 | |
| 59 void LayoutFullScreenPlaceholder::willBeDestroyed() { | |
| 60 m_owner->resetPlaceholder(); | |
| 61 LayoutBlockFlow::willBeDestroyed(); | |
| 62 } | |
| 63 | |
| 64 LayoutFullScreen::LayoutFullScreen() | |
| 65 : LayoutFlexibleBox(nullptr), m_placeholder(nullptr) { | |
| 66 setIsAtomicInlineLevel(false); | |
| 67 } | |
| 68 | |
| 69 LayoutFullScreen* LayoutFullScreen::createAnonymous(Document* document) { | |
| 70 LayoutFullScreen* layoutObject = new LayoutFullScreen(); | |
| 71 layoutObject->setDocumentForAnonymous(document); | |
| 72 return layoutObject; | |
| 73 } | |
| 74 | |
| 75 void LayoutFullScreen::willBeDestroyed() { | |
| 76 if (m_placeholder) { | |
| 77 remove(); | |
| 78 if (!m_placeholder->beingDestroyed()) | |
| 79 m_placeholder->destroy(); | |
| 80 DCHECK(!m_placeholder); | |
| 81 } | |
| 82 | |
| 83 // LayoutObjects are unretained, so notify the document (which holds a pointer | |
| 84 // to a LayoutFullScreen) if its LayoutFullScreen is destroyed. | |
| 85 Fullscreen& fullscreen = Fullscreen::from(document()); | |
| 86 if (fullscreen.fullScreenLayoutObject() == this) | |
| 87 fullscreen.fullScreenLayoutObjectDestroyed(); | |
| 88 | |
| 89 LayoutFlexibleBox::willBeDestroyed(); | |
| 90 } | |
| 91 | |
| 92 void LayoutFullScreen::updateStyle(LayoutObject* parent) { | |
| 93 RefPtr<ComputedStyle> fullscreenStyle = ComputedStyle::create(); | |
| 94 | |
| 95 // Create a stacking context: | |
| 96 fullscreenStyle->setZIndex(INT_MAX); | |
| 97 fullscreenStyle->setIsStackingContext(true); | |
| 98 | |
| 99 fullscreenStyle->setFontDescription(FontDescription()); | |
| 100 fullscreenStyle->font().update(nullptr); | |
| 101 | |
| 102 fullscreenStyle->setDisplay(EDisplay::Flex); | |
| 103 fullscreenStyle->setJustifyContentPosition(ContentPositionCenter); | |
| 104 // TODO (lajava): Since the FullScrenn layout object is anonymous, its Default | |
| 105 // Alignment (align-items) value can't be used to resolve its children Self | |
| 106 // Alignment 'auto' values. | |
| 107 fullscreenStyle->setAlignItemsPosition(ItemPositionCenter); | |
| 108 fullscreenStyle->setFlexDirection(FlowColumn); | |
| 109 | |
| 110 fullscreenStyle->setPosition(FixedPosition); | |
| 111 fullscreenStyle->setLeft(Length(0, blink::Fixed)); | |
| 112 fullscreenStyle->setTop(Length(0, blink::Fixed)); | |
| 113 IntSize viewportSize = document().page()->frameHost().visualViewport().size(); | |
| 114 fullscreenStyle->setWidth(Length(viewportSize.width(), blink::Fixed)); | |
| 115 fullscreenStyle->setHeight(Length(viewportSize.height(), blink::Fixed)); | |
| 116 | |
| 117 fullscreenStyle->setBackgroundColor(StyleColor(Color::black)); | |
| 118 | |
| 119 setStyleWithWritingModeOf(fullscreenStyle, parent); | |
| 120 } | |
| 121 | |
| 122 void LayoutFullScreen::updateStyle() { | |
| 123 updateStyle(parent()); | |
| 124 } | |
| 125 | |
| 126 LayoutObject* LayoutFullScreen::wrapLayoutObject(LayoutObject* object, | |
| 127 LayoutObject* parent, | |
| 128 Document* document) { | |
| 129 // FIXME: We should not modify the structure of the layout tree during | |
| 130 // layout. crbug.com/370459 | |
| 131 DeprecatedDisableModifyLayoutTreeStructureAsserts disabler; | |
| 132 | |
| 133 LayoutFullScreen* fullscreenLayoutObject = | |
| 134 LayoutFullScreen::createAnonymous(document); | |
| 135 fullscreenLayoutObject->updateStyle(parent); | |
| 136 if (parent && | |
| 137 !parent->isChildAllowed(fullscreenLayoutObject, | |
| 138 fullscreenLayoutObject->styleRef())) { | |
| 139 fullscreenLayoutObject->destroy(); | |
| 140 return nullptr; | |
| 141 } | |
| 142 if (object) { | |
| 143 // |object->parent()| can be null if the object is not yet attached | |
| 144 // to |parent|. | |
| 145 if (LayoutObject* parent = object->parent()) { | |
| 146 LayoutBlock* containingBlock = object->containingBlock(); | |
| 147 DCHECK(containingBlock); | |
| 148 // Since we are moving the |object| to a new parent | |
| 149 // |fullscreenLayoutObject|, the line box tree underneath our | |
| 150 // |containingBlock| is not longer valid. | |
| 151 if (containingBlock->isLayoutBlockFlow()) | |
| 152 toLayoutBlockFlow(containingBlock)->deleteLineBoxTree(); | |
| 153 | |
| 154 parent->addChildWithWritingModeOfParent(fullscreenLayoutObject, object); | |
| 155 object->remove(); | |
| 156 | |
| 157 // Always just do a full layout to ensure that line boxes get deleted | |
| 158 // properly. | |
| 159 // Because objects moved from |parent| to |fullscreenLayoutObject|, we | |
| 160 // want to make new line boxes instead of leaving the old ones around. | |
| 161 parent->setNeedsLayoutAndPrefWidthsRecalcAndFullPaintInvalidation( | |
| 162 LayoutInvalidationReason::Fullscreen); | |
| 163 containingBlock | |
| 164 ->setNeedsLayoutAndPrefWidthsRecalcAndFullPaintInvalidation( | |
| 165 LayoutInvalidationReason::Fullscreen); | |
| 166 } | |
| 167 fullscreenLayoutObject->addChild(object); | |
| 168 fullscreenLayoutObject | |
| 169 ->setNeedsLayoutAndPrefWidthsRecalcAndFullPaintInvalidation( | |
| 170 LayoutInvalidationReason::Fullscreen); | |
| 171 } | |
| 172 | |
| 173 DCHECK(document); | |
| 174 Fullscreen::from(*document).setFullScreenLayoutObject(fullscreenLayoutObject); | |
| 175 return fullscreenLayoutObject; | |
| 176 } | |
| 177 | |
| 178 void LayoutFullScreen::unwrapLayoutObject() { | |
| 179 // FIXME: We should not modify the structure of the layout tree during | |
| 180 // layout. crbug.com/370459 | |
| 181 DeprecatedDisableModifyLayoutTreeStructureAsserts disabler; | |
| 182 | |
| 183 if (parent()) { | |
| 184 for (LayoutObject* child = firstChild(); child; child = firstChild()) { | |
| 185 // We have to clear the override size, because as a flexbox, we | |
| 186 // may have set one on the child, and we don't want to leave that | |
| 187 // lying around on the child. | |
| 188 if (child->isBox()) | |
| 189 toLayoutBox(child)->clearOverrideSize(); | |
| 190 child->remove(); | |
| 191 parent()->addChild(child, this); | |
| 192 parent()->setNeedsLayoutAndPrefWidthsRecalcAndFullPaintInvalidation( | |
| 193 LayoutInvalidationReason::Fullscreen); | |
| 194 } | |
| 195 } | |
| 196 if (placeholder()) | |
| 197 placeholder()->remove(); | |
| 198 remove(); | |
| 199 destroy(); | |
| 200 } | |
| 201 | |
| 202 void LayoutFullScreen::createPlaceholder(PassRefPtr<ComputedStyle> style, | |
| 203 const LayoutRect& frameRect) { | |
| 204 if (style->width().isAuto()) | |
| 205 style->setWidth(Length(frameRect.width(), Fixed)); | |
| 206 if (style->height().isAuto()) | |
| 207 style->setHeight(Length(frameRect.height(), Fixed)); | |
| 208 | |
| 209 if (!m_placeholder) { | |
| 210 m_placeholder = new LayoutFullScreenPlaceholder(this); | |
| 211 m_placeholder->setStyleWithWritingModeOfParent(std::move(style)); | |
| 212 if (parent()) { | |
| 213 parent()->addChildWithWritingModeOfParent(m_placeholder, this); | |
| 214 parent()->setNeedsLayoutAndPrefWidthsRecalcAndFullPaintInvalidation( | |
| 215 LayoutInvalidationReason::Fullscreen); | |
| 216 } | |
| 217 } else { | |
| 218 m_placeholder->setStyle(std::move(style)); | |
| 219 m_placeholder->setStyleWithWritingModeOfParent(std::move(style)); | |
| 220 } | |
| 221 } | |
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Chromium Code Reviews
Issue 2202493002:
NOT FOR REVIEW: Fullscreen WIP (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master