The Tor Browser / file comparison
comparison: widget/xpwidgets/WidgetUtils.cpp
widget/xpwidgets/WidgetUtils.cpp
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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| -1:000000000000 | 0:882815eb8838 |
|---|---|
| 1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- | |
| 2 * vim: sw=2 ts=8 et : | |
| 3 */ | |
| 4 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 5 * License, v. 2.0. If a copy of the MPL was not distributed with this file, | |
| 6 * You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 7 | |
| 8 #include "mozilla/WidgetUtils.h" | |
| 9 | |
| 10 namespace mozilla { | |
| 11 | |
| 12 gfx::Matrix | |
| 13 ComputeTransformForRotation(const nsIntRect& aBounds, | |
| 14 ScreenRotation aRotation) | |
| 15 { | |
| 16 gfx::Matrix transform; | |
| 17 switch (aRotation) { | |
| 18 case ROTATION_0: | |
| 19 break; | |
| 20 case ROTATION_90: | |
| 21 transform.Translate(aBounds.width, 0); | |
| 22 transform = gfx::Matrix::Rotation(M_PI / 2) * transform; | |
| 23 break; | |
| 24 case ROTATION_180: | |
| 25 transform.Translate(aBounds.width, aBounds.height); | |
| 26 transform = gfx::Matrix::Rotation(M_PI) * transform; | |
| 27 break; | |
| 28 case ROTATION_270: | |
| 29 transform.Translate(0, aBounds.height); | |
| 30 transform = gfx::Matrix::Rotation(M_PI * 3 / 2) * transform; | |
| 31 break; | |
| 32 default: | |
| 33 MOZ_CRASH("Unknown rotation"); | |
| 34 } | |
| 35 return transform; | |
| 36 } | |
| 37 | |
| 38 } // namespace mozilla |
