1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
|
/*
* Copyright (C) 2006 Apple Computer, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef LayoutSVGBlock_h
#define LayoutSVGBlock_h
#include "core/layout/LayoutBlockFlow.h"
namespace blink {
class SVGElement;
// A common class of SVG objects that delegate layout, paint, etc. tasks to
// LayoutBlockFlow. It has two coordinate spaces:
// - local SVG coordinate space: similar to LayoutSVGModelObject, the space
// that localSVGTransform() applies.
// - local HTML coordinate space: defined by frameRect() as if the local SVG
// coordinate space created a containing block. Like other LayoutBlockFlow
// objects, LayoutSVGBlock's frameRect() is also in physical coordinates with
// flipped blocks direction in the "containing block".
class LayoutSVGBlock : public LayoutBlockFlow {
public:
explicit LayoutSVGBlock(SVGElement*);
// These mapping functions map coordinates in HTML spaces.
void mapLocalToAncestor(const LayoutBoxModelObject* ancestor,
TransformState&,
MapCoordinatesFlags = ApplyContainerFlip) const final;
void mapAncestorToLocal(const LayoutBoxModelObject* ancestor,
TransformState&,
MapCoordinatesFlags = ApplyContainerFlip) const final;
const LayoutObject* pushMappingToContainer(
const LayoutBoxModelObject* ancestorToStopAt,
LayoutGeometryMap&) const final;
bool mapToVisualRectInAncestorSpace(
const LayoutBoxModelObject* ancestor,
LayoutRect&,
VisualRectFlags = DefaultVisualRectFlags) const final;
AffineTransform localSVGTransform() const final { return m_localTransform; }
PaintLayerType layerTypeRequired() const final { return NoPaintLayer; }
protected:
void willBeDestroyed() override;
AffineTransform m_localTransform;
bool isOfType(LayoutObjectType type) const override {
return type == LayoutObjectSVG || LayoutBlockFlow::isOfType(type);
}
private:
LayoutRect absoluteVisualRect() const final;
bool allowsOverflowClip() const final;
void absoluteRects(Vector<IntRect>&,
const LayoutPoint& accumulatedOffset) const final;
void updateFromStyle() final;
void styleDidChange(StyleDifference, const ComputedStyle* oldStyle) final;
bool nodeAtPoint(HitTestResult&,
const HitTestLocation& locationInContainer,
const LayoutPoint& accumulatedOffset,
HitTestAction) override;
// The inherited version doesn't check for SVG effects.
bool paintedOutputOfObjectHasNoEffectRegardlessOfSize() const override {
return false;
}
};
} // namespace blink
#endif // LayoutSVGBlock_h
|
