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comparison: widget/xpwidgets/nsBaseScreen.h
widget/xpwidgets/nsBaseScreen.h
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| 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 | |
| 6 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 7 | |
| 8 #ifndef nsBaseScreen_h | |
| 9 #define nsBaseScreen_h | |
| 10 | |
| 11 #include "mozilla/Attributes.h" | |
| 12 #include "nsIScreen.h" | |
| 13 | |
| 14 class nsBaseScreen : public nsIScreen | |
| 15 { | |
| 16 public: | |
| 17 nsBaseScreen(); | |
| 18 virtual ~nsBaseScreen(); | |
| 19 | |
| 20 NS_DECL_ISUPPORTS | |
| 21 | |
| 22 // nsIScreen interface | |
| 23 | |
| 24 // These simply forward to the device-pixel versions; | |
| 25 // implementations where global display pixels may not correspond | |
| 26 // to per-screen device pixels must override. | |
| 27 NS_IMETHOD GetRectDisplayPix(int32_t *outLeft, int32_t *outTop, | |
| 28 int32_t *outWidth, int32_t *outHeight); | |
| 29 NS_IMETHOD GetAvailRectDisplayPix(int32_t *outLeft, int32_t *outTop, | |
| 30 int32_t *outWidth, int32_t *outHeight); | |
| 31 | |
| 32 /** | |
| 33 * Simple management of screen brightness locks. This abstract base class | |
| 34 * allows all widget implementations to share brightness locking code. | |
| 35 */ | |
| 36 NS_IMETHOD LockMinimumBrightness(uint32_t aBrightness); | |
| 37 NS_IMETHOD UnlockMinimumBrightness(uint32_t aBrightness); | |
| 38 | |
| 39 NS_IMETHOD GetRotation(uint32_t* aRotation) { | |
| 40 *aRotation = nsIScreen::ROTATION_0_DEG; | |
| 41 return NS_OK; | |
| 42 } | |
| 43 NS_IMETHOD SetRotation(uint32_t aRotation) { return NS_ERROR_NOT_AVAILABLE; } | |
| 44 | |
| 45 NS_IMETHOD GetContentsScaleFactor(double* aContentsScaleFactor); | |
| 46 | |
| 47 protected: | |
| 48 /** | |
| 49 * Manually set the current level of brightness locking. This is called after | |
| 50 * we determine, based on the current active locks, what the strongest | |
| 51 * lock is. You should normally not call this function - it will be | |
| 52 * called automatically by this class. | |
| 53 * | |
| 54 * Each widget implementation should implement this in a way that | |
| 55 * makes sense there. This is normally the only function that | |
| 56 * contains widget-specific code. | |
| 57 * | |
| 58 * The default implementation does nothing. | |
| 59 * | |
| 60 * @param aBrightness The current brightness level to set. If this is | |
| 61 * nsIScreen::BRIGHTNESS_LEVELS | |
| 62 * (an impossible value for a brightness level to be), | |
| 63 * then that signifies that there is no current | |
| 64 * minimum brightness level, and the screen can shut off. | |
| 65 */ | |
| 66 virtual void ApplyMinimumBrightness(uint32_t aBrightness) { } | |
| 67 | |
| 68 private: | |
| 69 /** | |
| 70 * Checks what the minimum brightness value is, and calls | |
| 71 * ApplyMinimumBrightness. | |
| 72 */ | |
| 73 void CheckMinimumBrightness(); | |
| 74 | |
| 75 uint32_t mBrightnessLocks[nsIScreen::BRIGHTNESS_LEVELS]; | |
| 76 }; | |
| 77 | |
| 78 #endif // nsBaseScreen_h |
