michael@0: /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
michael@0:  * vim: sw=2 ts=8 et :
michael@0:  */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #define MOZ_FATAL_ASSERTIONS_FOR_THREAD_SAFETY
michael@0: 
michael@0: #include "nsBaseScreen.h"
michael@0: 
michael@0: NS_IMPL_ISUPPORTS(nsBaseScreen, nsIScreen)
michael@0: 
michael@0: nsBaseScreen::nsBaseScreen()
michael@0: {
michael@0:   for (uint32_t i = 0; i < nsIScreen::BRIGHTNESS_LEVELS; i++)
michael@0:     mBrightnessLocks[i] = 0;
michael@0: }
michael@0: 
michael@0: nsBaseScreen::~nsBaseScreen() { }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsBaseScreen::GetRectDisplayPix(int32_t *outLeft,  int32_t *outTop,
michael@0:                                 int32_t *outWidth, int32_t *outHeight)
michael@0: {
michael@0:   return GetRect(outLeft, outTop, outWidth, outHeight);
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsBaseScreen::GetAvailRectDisplayPix(int32_t *outLeft,  int32_t *outTop,
michael@0:                                      int32_t *outWidth, int32_t *outHeight)
michael@0: {
michael@0:   return GetAvailRect(outLeft, outTop, outWidth, outHeight);
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsBaseScreen::LockMinimumBrightness(uint32_t aBrightness)
michael@0: {
michael@0:   NS_ABORT_IF_FALSE(
michael@0:     aBrightness < nsIScreen::BRIGHTNESS_LEVELS,
michael@0:     "Invalid brightness level to lock");
michael@0:   mBrightnessLocks[aBrightness]++;
michael@0:   NS_ABORT_IF_FALSE(mBrightnessLocks[aBrightness] > 0,
michael@0:     "Overflow after locking brightness level");
michael@0: 
michael@0:   CheckMinimumBrightness();
michael@0: 
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsBaseScreen::UnlockMinimumBrightness(uint32_t aBrightness)
michael@0: {
michael@0:   NS_ABORT_IF_FALSE(
michael@0:     aBrightness < nsIScreen::BRIGHTNESS_LEVELS,
michael@0:     "Invalid brightness level to lock");
michael@0:   NS_ABORT_IF_FALSE(mBrightnessLocks[aBrightness] > 0,
michael@0:     "Unlocking a brightness level with no corresponding lock");
michael@0:   mBrightnessLocks[aBrightness]--;
michael@0: 
michael@0:   CheckMinimumBrightness();
michael@0: 
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: void
michael@0: nsBaseScreen::CheckMinimumBrightness()
michael@0: {
michael@0:   uint32_t brightness = nsIScreen::BRIGHTNESS_LEVELS;
michael@0:   for (int32_t i = nsIScreen::BRIGHTNESS_LEVELS - 1; i >=0; i--) {
michael@0:     if (mBrightnessLocks[i] > 0) {
michael@0:       brightness = i;
michael@0:       break;
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   ApplyMinimumBrightness(brightness);
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsBaseScreen::GetContentsScaleFactor(double* aContentsScaleFactor)
michael@0: {
michael@0:   *aContentsScaleFactor = 1.0;
michael@0:   return NS_OK;
michael@0: }