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
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
|
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef __NS_SVGLENGTH2_H__
#define __NS_SVGLENGTH2_H__
#include "mozilla/Attributes.h"
#include "nsCoord.h"
#include "nsCycleCollectionParticipant.h"
#include "nsError.h"
#include "nsIDOMSVGLength.h"
#include "nsISMILAttr.h"
#include "nsMathUtils.h"
#include "nsSVGElement.h"
#include "SVGContentUtils.h"
#include "mozilla/gfx/Rect.h"
class nsIFrame;
class nsSMILValue;
namespace mozilla {
class DOMSVGLength;
namespace dom {
class SVGAnimatedLength;
class SVGAnimationElement;
class SVGSVGElement;
} // namespace dom
} // namespace mozilla
namespace mozilla {
namespace dom {
class UserSpaceMetrics
{
public:
virtual ~UserSpaceMetrics() {}
virtual float GetEmLength() const = 0;
virtual float GetExLength() const = 0;
virtual float GetAxisLength(uint8_t aCtxType) const = 0;
};
class UserSpaceMetricsWithSize : public UserSpaceMetrics
{
public:
virtual gfx::Size GetSize() const = 0;
virtual float GetAxisLength(uint8_t aCtxType) const override;
};
class SVGElementMetrics : public UserSpaceMetrics
{
public:
explicit SVGElementMetrics(nsSVGElement* aSVGElement,
mozilla::dom::SVGSVGElement* aCtx = nullptr);
virtual float GetEmLength() const override;
virtual float GetExLength() const override;
virtual float GetAxisLength(uint8_t aCtxType) const override;
private:
bool EnsureCtx() const;
nsSVGElement* mSVGElement;
mutable mozilla::dom::SVGSVGElement* mCtx;
};
class NonSVGFrameUserSpaceMetrics : public UserSpaceMetricsWithSize
{
public:
explicit NonSVGFrameUserSpaceMetrics(nsIFrame* aFrame);
virtual float GetEmLength() const override;
virtual float GetExLength() const override;
virtual gfx::Size GetSize() const override;
private:
nsIFrame* mFrame;
};
} // namespace dom
} // namespace mozilla
class nsSVGLength2
{
friend class mozilla::dom::SVGAnimatedLength;
friend class mozilla::DOMSVGLength;
typedef mozilla::dom::UserSpaceMetrics UserSpaceMetrics;
public:
void Init(uint8_t aCtxType = SVGContentUtils::XY,
uint8_t aAttrEnum = 0xff,
float aValue = 0,
uint8_t aUnitType = nsIDOMSVGLength::SVG_LENGTHTYPE_NUMBER) {
mAnimVal = mBaseVal = aValue;
mSpecifiedUnitType = aUnitType;
mAttrEnum = aAttrEnum;
mCtxType = aCtxType;
mIsAnimated = false;
mIsBaseSet = false;
}
nsSVGLength2& operator=(const nsSVGLength2& aLength) {
mBaseVal = aLength.mBaseVal;
mAnimVal = aLength.mAnimVal;
mSpecifiedUnitType = aLength.mSpecifiedUnitType;
mIsAnimated = aLength.mIsAnimated;
mIsBaseSet = aLength.mIsBaseSet;
return *this;
}
nsresult SetBaseValueString(const nsAString& aValue,
nsSVGElement *aSVGElement,
bool aDoSetAttr);
void GetBaseValueString(nsAString& aValue) const;
void GetAnimValueString(nsAString& aValue) const;
float GetBaseValue(nsSVGElement* aSVGElement) const
{ return mBaseVal / GetUnitScaleFactor(aSVGElement, mSpecifiedUnitType); }
float GetAnimValue(nsSVGElement* aSVGElement) const
{ return mAnimVal / GetUnitScaleFactor(aSVGElement, mSpecifiedUnitType); }
float GetAnimValue(nsIFrame* aFrame) const
{ return mAnimVal / GetUnitScaleFactor(aFrame, mSpecifiedUnitType); }
float GetAnimValue(mozilla::dom::SVGSVGElement* aCtx) const
{ return mAnimVal / GetUnitScaleFactor(aCtx, mSpecifiedUnitType); }
float GetAnimValue(const UserSpaceMetrics& aMetrics) const
{ return mAnimVal / GetUnitScaleFactor(aMetrics, mSpecifiedUnitType); }
uint8_t GetCtxType() const { return mCtxType; }
uint8_t GetSpecifiedUnitType() const { return mSpecifiedUnitType; }
bool IsPercentage() const
{ return mSpecifiedUnitType == nsIDOMSVGLength::SVG_LENGTHTYPE_PERCENTAGE; }
float GetAnimValInSpecifiedUnits() const { return mAnimVal; }
float GetBaseValInSpecifiedUnits() const { return mBaseVal; }
float GetBaseValue(mozilla::dom::SVGSVGElement* aCtx) const
{ return mBaseVal / GetUnitScaleFactor(aCtx, mSpecifiedUnitType); }
bool HasBaseVal() const {
return mIsBaseSet;
}
// Returns true if the animated value of this length has been explicitly
// set (either by animation, or by taking on the base value which has been
// explicitly set by markup or a DOM call), false otherwise.
// If this returns false, the animated value is still valid, that is,
// useable, and represents the default base value of the attribute.
bool IsExplicitlySet() const
{ return mIsAnimated || mIsBaseSet; }
already_AddRefed<mozilla::dom::SVGAnimatedLength>
ToDOMAnimatedLength(nsSVGElement* aSVGElement);
// Returns a new nsISMILAttr object that the caller must delete
nsISMILAttr* ToSMILAttr(nsSVGElement* aSVGElement);
private:
float mAnimVal;
float mBaseVal;
uint8_t mSpecifiedUnitType;
uint8_t mAttrEnum; // element specified tracking for attribute
uint8_t mCtxType; // X, Y or Unspecified
bool mIsAnimated:1;
bool mIsBaseSet:1;
float GetUnitScaleFactor(nsIFrame *aFrame, uint8_t aUnitType) const;
float GetUnitScaleFactor(const UserSpaceMetrics& aMetrics, uint8_t aUnitType) const;
float GetUnitScaleFactor(nsSVGElement *aSVGElement, uint8_t aUnitType) const;
float GetUnitScaleFactor(mozilla::dom::SVGSVGElement *aCtx, uint8_t aUnitType) const;
// SetBaseValue and SetAnimValue set the value in user units
void SetBaseValue(float aValue, nsSVGElement *aSVGElement, bool aDoSetAttr);
void SetBaseValueInSpecifiedUnits(float aValue, nsSVGElement *aSVGElement,
bool aDoSetAttr);
void SetAnimValue(float aValue, nsSVGElement *aSVGElement);
void SetAnimValueInSpecifiedUnits(float aValue, nsSVGElement *aSVGElement);
nsresult NewValueSpecifiedUnits(uint16_t aUnitType, float aValue,
nsSVGElement *aSVGElement);
nsresult ConvertToSpecifiedUnits(uint16_t aUnitType, nsSVGElement *aSVGElement);
nsresult ToDOMBaseVal(mozilla::DOMSVGLength **aResult, nsSVGElement* aSVGElement);
nsresult ToDOMAnimVal(mozilla::DOMSVGLength **aResult, nsSVGElement* aSVGElement);
public:
struct SMILLength : public nsISMILAttr
{
public:
SMILLength(nsSVGLength2* aVal, nsSVGElement *aSVGElement)
: mVal(aVal), mSVGElement(aSVGElement) {}
// These will stay alive because a nsISMILAttr only lives as long
// as the Compositing step, and DOM elements don't get a chance to
// die during that.
nsSVGLength2* mVal;
nsSVGElement* mSVGElement;
// nsISMILAttr methods
virtual nsresult ValueFromString(const nsAString& aStr,
const mozilla::dom::SVGAnimationElement* aSrcElement,
nsSMILValue &aValue,
bool& aPreventCachingOfSandwich) const override;
virtual nsSMILValue GetBaseValue() const override;
virtual void ClearAnimValue() override;
virtual nsresult SetAnimValue(const nsSMILValue& aValue) override;
};
};
#endif // __NS_SVGLENGTH2_H__
|
