mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-10-31 14:15:30 +00:00
62 lines
1.6 KiB
C++
62 lines
1.6 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
|
* vim: sw=2 ts=8 et :
|
|
*/
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#define MOZ_FATAL_ASSERTIONS_FOR_THREAD_SAFETY
|
|
|
|
#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);
|
|
}
|