commit daf4a127ba2af82a3fb477044b872719a0ab1827
author Jeff Brown <jeffbrown@google.com> Fri Aug 26 17:14:14 2011 -0700
committer Jeff Brown <jeffbrown@google.com> Fri Aug 26 17:14:14 2011 -0700
tree 2147e705a6b912683abd7169910acb548413d946
parent 9b9783ad60d31f3df5d2524e13abc1437d5b6f7d

Add a "show touches" option for demos and presentations.
Bug: 4569045

Change-Id: I8726ea292dd7def790a5e40d7d7e58968974f896

services/java/com/android/server/wm/InputManager.java

diff --git a/services/java/com/android/server/wm/InputManager.java b/services/java/com/android/server/wm/InputManager.java
index c8b18c8..60333a3 100644
--- a/services/java/com/android/server/wm/InputManager.java
+++ b/services/java/com/android/server/wm/InputManager.java
@@ -94,6 +94,7 @@
     private static native boolean nativeTransferTouchFocus(InputChannel fromChannel,
             InputChannel toChannel);
     private static native void nativeSetPointerSpeed(int speed);
+    private static native void nativeSetShowTouches(boolean enabled);
     private static native String nativeDump();
     private static native void nativeMonitor();
     
@@ -147,7 +148,10 @@
         nativeStart();
 
         registerPointerSpeedSettingObserver();
+        registerShowTouchesSettingObserver();
+
         updatePointerSpeedFromSettings();
+        updateShowTouchesFromSettings();
     }
     
     public void setDisplaySize(int displayId, int width, int height,
@@ -454,6 +458,32 @@
         return speed;
     }
 
+    public void updateShowTouchesFromSettings() {
+        int setting = getShowTouchesSetting(0);
+        nativeSetShowTouches(setting != 0);
+    }
+
+    private void registerShowTouchesSettingObserver() {
+        mContext.getContentResolver().registerContentObserver(
+                Settings.System.getUriFor(Settings.System.SHOW_TOUCHES), true,
+                new ContentObserver(mWindowManagerService.mH) {
+                    @Override
+                    public void onChange(boolean selfChange) {
+                        updateShowTouchesFromSettings();
+                    }
+                });
+    }
+
+    private int getShowTouchesSetting(int defaultValue) {
+        int result = defaultValue;
+        try {
+            result = Settings.System.getInt(mContext.getContentResolver(),
+                    Settings.System.SHOW_TOUCHES);
+        } catch (SettingNotFoundException snfe) {
+        }
+        return result;
+    }
+
     public void dump(PrintWriter pw) {
         String dumpStr = nativeDump();
         if (dumpStr != null) {