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
|
/* -*- 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 MOZILLA_SVGTRANSFORM_H__
#define MOZILLA_SVGTRANSFORM_H__
#include "gfxMatrix.h"
#include "nsDebug.h"
namespace mozilla {
// Transform Types
static const unsigned short SVG_TRANSFORM_UNKNOWN = 0;
static const unsigned short SVG_TRANSFORM_MATRIX = 1;
static const unsigned short SVG_TRANSFORM_TRANSLATE = 2;
static const unsigned short SVG_TRANSFORM_SCALE = 3;
static const unsigned short SVG_TRANSFORM_ROTATE = 4;
static const unsigned short SVG_TRANSFORM_SKEWX = 5;
static const unsigned short SVG_TRANSFORM_SKEWY = 6;
/*
* The DOM wrapper class for this class is DOMSVGTransformMatrix.
*/
class nsSVGTransform
{
public:
// Default ctor initialises to matrix type with identity matrix
nsSVGTransform()
: mMatrix() // Initialises to identity
, mAngle(0.f)
, mOriginX(0.f)
, mOriginY(0.f)
, mType(SVG_TRANSFORM_MATRIX)
{ }
explicit nsSVGTransform(const gfxMatrix& aMatrix)
: mMatrix(aMatrix)
, mAngle(0.f)
, mOriginX(0.f)
, mOriginY(0.f)
, mType(SVG_TRANSFORM_MATRIX)
{ }
bool operator==(const nsSVGTransform& rhs) const {
return mType == rhs.mType &&
MatricesEqual(mMatrix, rhs.mMatrix) &&
mAngle == rhs.mAngle &&
mOriginX == rhs.mOriginX &&
mOriginY == rhs.mOriginY;
}
void GetValueAsString(nsAString& aValue) const;
float Angle() const {
return mAngle;
}
void GetRotationOrigin(float& aOriginX, float& aOriginY) const {
aOriginX = mOriginX;
aOriginY = mOriginY;
}
uint16_t Type() const {
return mType;
}
const gfxMatrix& GetMatrix() const { return mMatrix; }
void SetMatrix(const gfxMatrix& aMatrix);
void SetTranslate(float aTx, float aTy);
void SetScale(float aSx, float aSy);
void SetRotate(float aAngle, float aCx, float aCy);
nsresult SetSkewX(float aAngle);
nsresult SetSkewY(float aAngle);
static bool MatricesEqual(const gfxMatrix& a, const gfxMatrix& b)
{
return a._11 == b._11 &&
a._12 == b._12 &&
a._21 == b._21 &&
a._22 == b._22 &&
a._31 == b._31 &&
a._32 == b._32;
}
protected:
gfxMatrix mMatrix;
float mAngle, mOriginX, mOriginY;
uint16_t mType;
};
/*
* A slightly more light-weight version of nsSVGTransform for SMIL animation.
*
* Storing the parameters in an array (rather than a matrix) also allows simpler
* (transform type-agnostic) interpolation and addition.
*
* The meaning of the mParams array depends on the transform type as follows:
*
* Type | mParams[0], mParams[1], mParams[2], ...
* --------------------+-----------------------------------------
* translate | tx, ty
* scale | sx, sy
* rotate | rotation-angle (in degrees), cx, cy
* skewX | skew-angle (in degrees)
* skewY | skew-angle (in degrees)
* matrix | a, b, c, d, e, f
*
* The matrix type is never generated by animation code (it is only produced
* when the user inserts one via the DOM) and often requires special handling
* when we do encounter it. Therefore many users of this class are only
* interested in the first three parameters and so we provide a special
* constructor for setting those parameters only.
*/
class SVGTransformSMILData
{
public:
// Number of float-params required in constructor, if constructing one of the
// 'simple' transform types (all but matrix type)
static const uint32_t NUM_SIMPLE_PARAMS = 3;
// Number of float-params required in constructor for matrix type.
// This is also the number of params we actually store, regardless of type.
static const uint32_t NUM_STORED_PARAMS = 6;
explicit SVGTransformSMILData(uint16_t aType)
: mTransformType(aType)
{
MOZ_ASSERT(aType >= SVG_TRANSFORM_MATRIX && aType <= SVG_TRANSFORM_SKEWY,
"Unexpected transform type");
for (uint32_t i = 0; i < NUM_STORED_PARAMS; ++i) {
mParams[i] = 0.f;
}
}
SVGTransformSMILData(uint16_t aType, float (&aParams)[NUM_SIMPLE_PARAMS])
: mTransformType(aType)
{
MOZ_ASSERT(aType >= SVG_TRANSFORM_TRANSLATE && aType <= SVG_TRANSFORM_SKEWY,
"Expected 'simple' transform type");
for (uint32_t i = 0; i < NUM_SIMPLE_PARAMS; ++i) {
mParams[i] = aParams[i];
}
for (uint32_t i = NUM_SIMPLE_PARAMS; i < NUM_STORED_PARAMS; ++i) {
mParams[i] = 0.f;
}
}
// Conversion to/from a fully-fledged nsSVGTransform
explicit SVGTransformSMILData(const nsSVGTransform& aTransform);
nsSVGTransform ToSVGTransform() const;
bool operator==(const SVGTransformSMILData& aOther) const
{
if (mTransformType != aOther.mTransformType)
return false;
for (uint32_t i = 0; i < NUM_STORED_PARAMS; ++i) {
if (mParams[i] != aOther.mParams[i]) {
return false;
}
}
return true;
}
bool operator!=(const SVGTransformSMILData& aOther) const
{
return !(*this == aOther);
}
uint16_t mTransformType;
float mParams[NUM_STORED_PARAMS];
};
} // namespace mozilla
#endif // MOZILLA_SVGTRANSFORM_H__
|
