commit fb73f79340375013225618a5d87f46b958f698ef
author Mike Lockwood <lockwood@android.com> Fri Nov 20 11:31:18 2009 -0500
committer Mike Lockwood <lockwood@android.com> Mon Nov 23 15:16:55 2009 -0500
tree aeeee397d3485533d7cf5c8d9cca6f22313fd4f8
parent 132dab8f91f5e87581660069753f238ea9914732

Add window manager support for overriding button and keyboard backlight values.

The new backlightBrightness field works similarly as the existing WindowManager.LayoutParams.screenBrightness field

Needed for bugs:
    b/2233655 (under low ambient light the touch keys remain illuminated during video playback and never timeout)
    b/2221079 (Backlight for home/search/back/etc buttons should turn off when in dock in night mode)

Change-Id: I60dfecdc7bb653b0db38094464de651220b3d438

services/java/com/android/server/WindowManagerService.java

diff --git a/services/java/com/android/server/WindowManagerService.java b/services/java/com/android/server/WindowManagerService.java
index a013c75..0481340 100644
--- a/services/java/com/android/server/WindowManagerService.java
+++ b/services/java/com/android/server/WindowManagerService.java
@@ -9313,6 +9313,7 @@
         boolean orientationChangeComplete = true;
         Session holdScreen = null;
         float screenBrightness = -1;
+        float buttonBrightness = -1;
         boolean focusDisplayed = false;
         boolean animating = false;
 
@@ -10072,6 +10073,10 @@
                                 && screenBrightness < 0) {
                             screenBrightness = w.mAttrs.screenBrightness;
                         }
+                        if (!syswin && w.mAttrs.buttonBrightness >= 0
+                                && buttonBrightness < 0) {
+                            buttonBrightness = w.mAttrs.buttonBrightness;
+                        }
                         if (attrs.type == WindowManager.LayoutParams.TYPE_SYSTEM_DIALOG
                                 || attrs.type == WindowManager.LayoutParams.TYPE_KEYGUARD
                                 || attrs.type == WindowManager.LayoutParams.TYPE_SYSTEM_ERROR) {
@@ -10318,6 +10323,12 @@
             mPowerManager.setScreenBrightnessOverride((int)
                     (screenBrightness * Power.BRIGHTNESS_ON));
         }
+        if (buttonBrightness < 0 || buttonBrightness > 1.0f) {
+            mPowerManager.setButtonBrightnessOverride(-1);
+        } else {
+            mPowerManager.setButtonBrightnessOverride((int)
+                    (buttonBrightness * Power.BRIGHTNESS_ON));
+        }
         if (holdScreen != mHoldingScreenOn) {
             mHoldingScreenOn = holdScreen;
             Message m = mH.obtainMessage(H.HOLD_SCREEN_CHANGED, holdScreen);