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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 #include "ui/gfx/transform.h" | 5 #include "ui/gfx/transform.h" |
6 | 6 |
7 #include "ui/gfx/point3_f.h" | 7 #include "ui/gfx/point3_f.h" |
8 #include "ui/gfx/rect.h" | 8 #include "ui/gfx/rect.h" |
| 9 #include "ui/gfx/rect_f.h" |
| 10 #include "ui/gfx/rect_conversions.h" |
9 #include "ui/gfx/safe_integer_conversions.h" | 11 #include "ui/gfx/safe_integer_conversions.h" |
10 #include "ui/gfx/skia_util.h" | 12 #include "ui/gfx/skia_util.h" |
11 | 13 |
12 namespace gfx { | 14 namespace gfx { |
13 | 15 |
14 Transform::Transform() { | 16 Transform::Transform() { |
15 matrix_.reset(); | 17 matrix_.reset(); |
16 } | 18 } |
17 | 19 |
18 Transform::~Transform() {} | 20 Transform::~Transform() {} |
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144 bool Transform::TransformPointReverse(Point3F& point) const { | 146 bool Transform::TransformPointReverse(Point3F& point) const { |
145 // TODO(sad): Try to avoid trying to invert the matrix. | 147 // TODO(sad): Try to avoid trying to invert the matrix. |
146 SkMatrix44 inverse; | 148 SkMatrix44 inverse; |
147 if (!matrix_.invert(&inverse)) | 149 if (!matrix_.invert(&inverse)) |
148 return false; | 150 return false; |
149 | 151 |
150 TransformPointInternal(inverse, point); | 152 TransformPointInternal(inverse, point); |
151 return true; | 153 return true; |
152 } | 154 } |
153 | 155 |
154 void Transform::TransformRect(Rect* rect) const { | 156 void Transform::TransformRect(RectF* rect) const { |
155 SkRect src = RectToSkRect(*rect); | 157 SkRect src = RectFToSkRect(*rect); |
156 const SkMatrix& matrix = matrix_; | 158 const SkMatrix& matrix = matrix_; |
157 matrix.mapRect(&src); | 159 matrix.mapRect(&src); |
158 *rect = SkRectToRect(src); | 160 *rect = SkRectToRectF(src); |
159 } | 161 } |
160 | 162 |
161 bool Transform::TransformRectReverse(Rect* rect) const { | 163 void Transform::TransformRect(Rect* rect) const { |
| 164 RectF rect_f = *rect; |
| 165 TransformRect(&rect_f); |
| 166 *rect = gfx::ToEnclosingRect(rect_f); |
| 167 } |
| 168 |
| 169 bool Transform::TransformRectReverse(RectF* rect) const { |
162 SkMatrix44 inverse; | 170 SkMatrix44 inverse; |
163 if (!matrix_.invert(&inverse)) | 171 if (!matrix_.invert(&inverse)) |
164 return false; | 172 return false; |
165 const SkMatrix& matrix = inverse; | 173 const SkMatrix& matrix = inverse; |
166 SkRect src = RectToSkRect(*rect); | 174 SkRect src = RectFToSkRect(*rect); |
167 matrix.mapRect(&src); | 175 matrix.mapRect(&src); |
168 *rect = SkRectToRect(src); | 176 *rect = SkRectToRectF(src); |
169 return true; | 177 return true; |
170 } | 178 } |
171 | 179 |
| 180 void Transform::TransformRectReverse(Rect* rect) const { |
| 181 RectF rect_f = *rect; |
| 182 TransformRectReverse(&rect_f); |
| 183 *rect = gfx::ToEnclosingRect(rect_f); |
| 184 } |
| 185 |
172 void Transform::TransformPointInternal(const SkMatrix44& xform, | 186 void Transform::TransformPointInternal(const SkMatrix44& xform, |
173 Point3F& point) const { | 187 Point3F& point) const { |
174 SkScalar p[4] = { | 188 SkScalar p[4] = { |
175 SkFloatToScalar(point.x()), | 189 SkFloatToScalar(point.x()), |
176 SkFloatToScalar(point.y()), | 190 SkFloatToScalar(point.y()), |
177 SkFloatToScalar(point.z()), | 191 SkFloatToScalar(point.z()), |
178 1 }; | 192 1 }; |
179 | 193 |
180 xform.map(p); | 194 xform.map(p); |
181 | 195 |
182 if (p[3] != 1 && abs(p[3]) > 0) { | 196 if (p[3] != 1 && abs(p[3]) > 0) { |
183 point.SetPoint(p[0] / p[3], p[1] / p[3], p[2]/ p[3]); | 197 point.SetPoint(p[0] / p[3], p[1] / p[3], p[2]/ p[3]); |
184 } else { | 198 } else { |
185 point.SetPoint(p[0], p[1], p[2]); | 199 point.SetPoint(p[0], p[1], p[2]); |
186 } | 200 } |
187 } | 201 } |
188 | 202 |
189 void Transform::TransformPointInternal(const SkMatrix44& xform, | 203 void Transform::TransformPointInternal(const SkMatrix44& xform, |
190 Point& point) const { | 204 Point& point) const { |
191 SkScalar p[4] = { SkIntToScalar(point.x()), SkIntToScalar(point.y()), | 205 SkScalar p[4] = { SkIntToScalar(point.x()), SkIntToScalar(point.y()), |
192 0, 1 }; | 206 0, 1 }; |
193 | 207 |
194 xform.map(p); | 208 xform.map(p); |
195 | 209 |
196 point.SetPoint(ToRoundedInt(p[0]), ToRoundedInt(p[1])); | 210 point.SetPoint(ToRoundedInt(p[0]), ToRoundedInt(p[1])); |
197 } | 211 } |
198 | 212 |
199 } // namespace gfx | 213 } // namespace gfx |
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