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Side by Side Diff: ui/gfx/transform_util.h

Issue 23498059: Remove last dependencies on ui/base from ui/gfx (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: last rebase Created 7 years, 2 months ago
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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #ifndef UI_GFX_TRANSFORM_UTIL_H_ 5 #ifndef UI_GFX_TRANSFORM_UTIL_H_
6 #define UI_GFX_TRANSFORM_UTIL_H_ 6 #define UI_GFX_TRANSFORM_UTIL_H_
7 7
8 #include "ui/gfx/gfx_export.h" 8 #include "ui/gfx/gfx_export.h"
9 #include "ui/gfx/transform.h" 9 #include "ui/gfx/transform.h"
10 10
11 namespace gfx { 11 namespace gfx {
12 12
13 class Point; 13 class Point;
14 14
15 // Returns a scale transform at |anchor| point. 15 // Returns a scale transform at |anchor| point.
16 UI_EXPORT Transform GetScaleTransform(const Point& anchor, float scale); 16 GFX_EXPORT Transform GetScaleTransform(const Point& anchor, float scale);
17 17
18 // Contains the components of a factored transform. These components may be 18 // Contains the components of a factored transform. These components may be
19 // blended and recomposed. 19 // blended and recomposed.
20 struct UI_EXPORT DecomposedTransform { 20 struct GFX_EXPORT DecomposedTransform {
21 // The default constructor initializes the components in such a way that 21 // The default constructor initializes the components in such a way that
22 // if used with Compose below, will produce the identity transform. 22 // if used with Compose below, will produce the identity transform.
23 DecomposedTransform(); 23 DecomposedTransform();
24 24
25 SkMScalar translate[3]; 25 SkMScalar translate[3];
26 SkMScalar scale[3]; 26 SkMScalar scale[3];
27 SkMScalar skew[3]; 27 SkMScalar skew[3];
28 SkMScalar perspective[4]; 28 SkMScalar perspective[4];
29 SkMScalar quaternion[4]; 29 SkMScalar quaternion[4];
30 30
31 std::string ToString() const; 31 std::string ToString() const;
32 32
33 // Copy and assign are allowed. 33 // Copy and assign are allowed.
34 }; 34 };
35 35
36 // Interpolates the decomposed components |to| with |from| using the 36 // Interpolates the decomposed components |to| with |from| using the
37 // routines described in http://www.w3.org/TR/css3-3d-transform/. 37 // routines described in http://www.w3.org/TR/css3-3d-transform/.
38 // |progress| is in the range [0, 1] (0 leaves |out| unchanged, and 1 38 // |progress| is in the range [0, 1] (0 leaves |out| unchanged, and 1
39 // assigns |from| to |out|). 39 // assigns |from| to |out|).
40 UI_EXPORT bool BlendDecomposedTransforms(DecomposedTransform* out, 40 GFX_EXPORT bool BlendDecomposedTransforms(DecomposedTransform* out,
41 const DecomposedTransform& to, 41 const DecomposedTransform& to,
42 const DecomposedTransform& from, 42 const DecomposedTransform& from,
43 double progress); 43 double progress);
44 44
45 // Decomposes this transform into its translation, scale, skew, perspective, 45 // Decomposes this transform into its translation, scale, skew, perspective,
46 // and rotation components following the routines detailed in this spec: 46 // and rotation components following the routines detailed in this spec:
47 // http://www.w3.org/TR/css3-3d-transforms/. 47 // http://www.w3.org/TR/css3-3d-transforms/.
48 UI_EXPORT bool DecomposeTransform(DecomposedTransform* out, 48 GFX_EXPORT bool DecomposeTransform(DecomposedTransform* out,
49 const Transform& transform); 49 const Transform& transform);
50 50
51 // Composes a transform from the given translation, scale, skew, prespective, 51 // Composes a transform from the given translation, scale, skew, prespective,
52 // and rotation components following the routines detailed in this spec: 52 // and rotation components following the routines detailed in this spec:
53 // http://www.w3.org/TR/css3-3d-transforms/. 53 // http://www.w3.org/TR/css3-3d-transforms/.
54 UI_EXPORT Transform ComposeTransform(const DecomposedTransform& decomp); 54 GFX_EXPORT Transform ComposeTransform(const DecomposedTransform& decomp);
55 55
56 } // namespace gfx 56 } // namespace gfx
57 57
58 #endif // UI_GFX_TRANSFORM_UTIL_H_ 58 #endif // UI_GFX_TRANSFORM_UTIL_H_
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