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76 lines
2.6 KiB
Plaintext
76 lines
2.6 KiB
Plaintext
/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsISupports.idl"
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[scriptable, uuid(D6F13AF4-8ACA-4A10-8687-3F99C3692AC0)]
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interface nsIScreen : nsISupports
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{
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/**
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* Levels of brightness for the screen, from off to full brightness.
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*/
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const unsigned long BRIGHTNESS_DIM = 0;
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const unsigned long BRIGHTNESS_FULL = 1;
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/* The number of different brightness levels */
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const unsigned long BRIGHTNESS_LEVELS = 2;
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/**
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* Allowable screen rotations, when the underlying widget toolkit
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* supports rotating the screen.
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*
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* ROTATION_0_DEG is the default, unrotated configuration.
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*/
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const unsigned long ROTATION_0_DEG = 0;
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const unsigned long ROTATION_90_DEG = 1;
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const unsigned long ROTATION_180_DEG = 2;
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const unsigned long ROTATION_270_DEG = 3;
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/**
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* These report screen dimensions in (screen-specific) device pixels
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*/
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void GetRect(out long left, out long top, out long width, out long height);
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void GetAvailRect(out long left, out long top, out long width, out long height);
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/**
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* And these report in global display pixels
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*/
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void GetRectDisplayPix(out long left, out long top, out long width, out long height);
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void GetAvailRectDisplayPix(out long left, out long top, out long width, out long height);
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/**
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* Locks the minimum brightness of the screen, forcing it to be at
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* least as bright as a certain brightness level. Each call to this
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* function must eventually be followed by a corresponding call to
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* unlockMinimumBrightness, with the same brightness level.
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*
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* @param brightness A brightness level, one of the above constants.
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*/
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void lockMinimumBrightness(in unsigned long brightness);
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/**
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* Releases a lock on the screen brightness. This must be called
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* (eventually) after a corresponding call to lockMinimumBrightness.
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*
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* @param brightness A brightness level, one of the above constants.
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*/
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void unlockMinimumBrightness(in unsigned long brightness);
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readonly attribute long pixelDepth;
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readonly attribute long colorDepth;
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/**
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* Get/set the screen rotation, on platforms that support changing
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* screen rotation.
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*/
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attribute unsigned long rotation;
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/**
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* The number of device pixels per screen point in HiDPI mode.
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* Returns 1.0 if HiDPI mode is disabled or unsupported.
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*/
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readonly attribute double contentsScaleFactor;
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};
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