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