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93 lines
3.0 KiB
C++
93 lines
3.0 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* vim: sw=2 ts=8 et :
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*/
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at:
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla Code.
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*
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* The Initial Developer of the Original Code is
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* The Mozilla Foundation
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* Portions created by the Initial Developer are Copyright (C) 2011
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Chris Jones <jones.chris.g@gmail.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsBaseScreen.h"
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NS_IMPL_ISUPPORTS1(nsBaseScreen, nsIScreen)
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nsBaseScreen::nsBaseScreen()
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{
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for (PRUint32 i = 0; i < nsIScreen::BRIGHTNESS_LEVELS; i++)
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mBrightnessLocks[i] = 0;
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}
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nsBaseScreen::~nsBaseScreen() { }
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NS_IMETHODIMP
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nsBaseScreen::LockMinimumBrightness(PRUint32 aBrightness)
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{
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NS_ABORT_IF_FALSE(
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aBrightness < nsIScreen::BRIGHTNESS_LEVELS,
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"Invalid brightness level to lock");
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mBrightnessLocks[aBrightness]++;
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NS_ABORT_IF_FALSE(mBrightnessLocks[aBrightness] > 0,
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"Overflow after locking brightness level");
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CheckMinimumBrightness();
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return NS_OK;
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}
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NS_IMETHODIMP
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nsBaseScreen::UnlockMinimumBrightness(PRUint32 aBrightness)
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{
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NS_ABORT_IF_FALSE(
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aBrightness < nsIScreen::BRIGHTNESS_LEVELS,
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"Invalid brightness level to lock");
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NS_ABORT_IF_FALSE(mBrightnessLocks[aBrightness] > 0,
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"Unlocking a brightness level with no corresponding lock");
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mBrightnessLocks[aBrightness]--;
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CheckMinimumBrightness();
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return NS_OK;
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}
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void
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nsBaseScreen::CheckMinimumBrightness()
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{
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PRUint32 brightness = nsIScreen::BRIGHTNESS_LEVELS;
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for (PRUint32 i = 0; i < nsIScreen::BRIGHTNESS_LEVELS; i++)
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if (mBrightnessLocks[i] > 0)
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brightness = i;
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ApplyMinimumBrightness(brightness);
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}
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