1/*
2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
3 * (C) 1999 Antti Koivisto (koivisto@kde.org)
4 * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Library General Public License for more details.
15 *
16 * You should have received a copy of the GNU Library General Public License
17 * along with this library; see the file COPYING.LIB. If not, write to
18 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
19 * Boston, MA 02110-1301, USA.
20 *
21 */
22
23#pragma once
24
25#include "InlineFlowBox.h"
26#include "RenderBoxModelObject.h"
27#include "RenderLineBoxList.h"
28
29namespace WebCore {
30
31class Position;
32class RenderFragmentContainer;
33
34class RenderInline : public RenderBoxModelObject {
35 WTF_MAKE_ISO_ALLOCATED(RenderInline);
36public:
37 RenderInline(Element&, RenderStyle&&);
38 RenderInline(Document&, RenderStyle&&);
39
40 LayoutUnit marginLeft() const final;
41 LayoutUnit marginRight() const final;
42 LayoutUnit marginTop() const final;
43 LayoutUnit marginBottom() const final;
44 LayoutUnit marginBefore(const RenderStyle* otherStyle = 0) const final;
45 LayoutUnit marginAfter(const RenderStyle* otherStyle = 0) const final;
46 LayoutUnit marginStart(const RenderStyle* otherStyle = 0) const final;
47 LayoutUnit marginEnd(const RenderStyle* otherStyle = 0) const final;
48
49 void absoluteRects(Vector<IntRect>&, const LayoutPoint& accumulatedOffset) const final;
50 void absoluteQuads(Vector<FloatQuad>&, bool* wasFixed) const override;
51
52 LayoutSize offsetFromContainer(RenderElement&, const LayoutPoint&, bool* offsetDependsOnPoint = nullptr) const final;
53
54 LayoutRect borderBoundingBox() const final
55 {
56 return LayoutRect(LayoutPoint(), linesBoundingBox().size());
57 }
58
59 WEBCORE_EXPORT IntRect linesBoundingBox() const;
60 LayoutRect linesVisualOverflowBoundingBox() const;
61 LayoutRect linesVisualOverflowBoundingBoxInFragment(const RenderFragmentContainer*) const;
62
63 InlineFlowBox* createAndAppendInlineFlowBox();
64
65 void dirtyLineBoxes(bool fullLayout);
66 void deleteLines();
67
68 RenderLineBoxList& lineBoxes() { return m_lineBoxes; }
69 const RenderLineBoxList& lineBoxes() const { return m_lineBoxes; }
70
71 InlineFlowBox* firstLineBox() const { return m_lineBoxes.firstLineBox(); }
72 InlineFlowBox* lastLineBox() const { return m_lineBoxes.lastLineBox(); }
73 InlineBox* firstLineBoxIncludingCulling() const { return alwaysCreateLineBoxes() ? firstLineBox() : culledInlineFirstLineBox(); }
74 InlineBox* lastLineBoxIncludingCulling() const { return alwaysCreateLineBoxes() ? lastLineBox() : culledInlineLastLineBox(); }
75
76#if PLATFORM(IOS_FAMILY)
77 void absoluteQuadsForSelection(Vector<FloatQuad>& quads) const override;
78#endif
79
80 void updateDragState(bool dragOn) final;
81
82 LayoutSize offsetForInFlowPositionedInline(const RenderBox* child) const;
83
84 void addFocusRingRects(Vector<LayoutRect>&, const LayoutPoint& additionalOffset, const RenderLayerModelObject* paintContainer = 0) final;
85 void paintOutline(PaintInfo&, const LayoutPoint&);
86
87 bool alwaysCreateLineBoxes() const { return renderInlineAlwaysCreatesLineBoxes(); }
88 void setAlwaysCreateLineBoxes() { setRenderInlineAlwaysCreatesLineBoxes(true); }
89 void updateAlwaysCreateLineBoxes(bool fullLayout);
90
91 LayoutRect localCaretRect(InlineBox*, unsigned, LayoutUnit* extraWidthToEndOfLine) final;
92
93 bool hitTestCulledInline(const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset);
94
95protected:
96 void willBeDestroyed() override;
97
98 void styleWillChange(StyleDifference, const RenderStyle& newStyle) override;
99 void styleDidChange(StyleDifference, const RenderStyle* oldStyle) override;
100
101 void updateFromStyle() override;
102
103private:
104 const char* renderName() const override;
105
106 bool canHaveChildren() const final { return true; }
107
108 LayoutRect culledInlineVisualOverflowBoundingBox() const;
109 InlineBox* culledInlineFirstLineBox() const;
110 InlineBox* culledInlineLastLineBox() const;
111
112 template<typename GeneratorContext>
113 void generateLineBoxRects(GeneratorContext& yield) const;
114 template<typename GeneratorContext>
115 void generateCulledLineBoxRects(GeneratorContext& yield, const RenderInline* container) const;
116
117 void layout() final { ASSERT_NOT_REACHED(); } // Do nothing for layout()
118
119 void paint(PaintInfo&, const LayoutPoint&) final;
120
121 bool nodeAtPoint(const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction) final;
122
123 bool requiresLayer() const override { return isInFlowPositioned() || createsGroup() || hasClipPath() || willChangeCreatesStackingContext() || hasRunningAcceleratedAnimations(); }
124
125 LayoutUnit offsetLeft() const final;
126 LayoutUnit offsetTop() const final;
127 LayoutUnit offsetWidth() const final { return linesBoundingBox().width(); }
128 LayoutUnit offsetHeight() const final { return linesBoundingBox().height(); }
129
130 LayoutRect clippedOverflowRectForRepaint(const RenderLayerModelObject* repaintContainer) const override;
131 LayoutRect rectWithOutlineForRepaint(const RenderLayerModelObject* repaintContainer, LayoutUnit outlineWidth) const final;
132
133 Optional<LayoutRect> computeVisibleRectInContainer(const LayoutRect&, const RenderLayerModelObject* container, VisibleRectContext) const final;
134 LayoutRect computeVisibleRectUsingPaintOffset(const LayoutRect&) const;
135
136 void mapLocalToContainer(const RenderLayerModelObject* repaintContainer, TransformState&, MapCoordinatesFlags, bool* wasFixed) const override;
137 const RenderObject* pushMappingToContainer(const RenderLayerModelObject* ancestorToStopAt, RenderGeometryMap&) const override;
138
139 VisiblePosition positionForPoint(const LayoutPoint&, const RenderFragmentContainer*) final;
140
141 LayoutRect frameRectForStickyPositioning() const final { return linesBoundingBox(); }
142
143 virtual std::unique_ptr<InlineFlowBox> createInlineFlowBox(); // Subclassed by RenderSVGInline
144
145 void dirtyLinesFromChangedChild(RenderObject& child) final { m_lineBoxes.dirtyLinesFromChangedChild(*this, child); }
146
147 LayoutUnit lineHeight(bool firstLine, LineDirectionMode, LinePositionMode = PositionOnContainingLine) const final;
148 int baselinePosition(FontBaseline, bool firstLine, LineDirectionMode, LinePositionMode = PositionOnContainingLine) const final;
149
150 void updateHitTestResult(HitTestResult&, const LayoutPoint&) final;
151
152 void imageChanged(WrappedImagePtr, const IntRect* = 0) final;
153
154#if ENABLE(DASHBOARD_SUPPORT)
155 void addAnnotatedRegions(Vector<AnnotatedRegionValue>&) final;
156#endif
157
158 void paintOutlineForLine(GraphicsContext&, const LayoutPoint&, const LayoutRect& prevLine, const LayoutRect& thisLine, const LayoutRect& nextLine, const Color&);
159
160 bool willChangeCreatesStackingContext() const
161 {
162 return style().willChange() && style().willChange()->canCreateStackingContext();
163 }
164
165 RenderLineBoxList m_lineBoxes; // All of the line boxes created for this inline flow. For example, <i>Hello<br>world.</i> will have two <i> line boxes.
166};
167
168} // namespace WebCore
169
170SPECIALIZE_TYPE_TRAITS_RENDER_OBJECT(RenderInline, isRenderInline())
171