Left handed navbar during landscape mode

This patch allows for the navbar to be moved to the left side of the
screen during landscape mode. Left handed people are more used to this
option.

This patch must go with another patch that changes
packages/apps/Settings

Screenshot: http://i.imgur.com/jWqJcEV.png

Change-Id: Ic95e3fda1f55efd2ec908c8d7226e638ec0ab80a

Expanded Desktop : Fix Left handed navbar during landscape mode

from http://review.cyanogenmod.org/#/c/57454
when you enable expanded desktop and left handed navbar.
you need to swipe from right edge to show navbar.
but this patch will change to swipe from left edge to show navbar.
Video avalible at http://youtu.be/rUy14LQj9iE

Patchset2 : change tab to whitespace
Patchset3 : remove \r after @override in PhoneWindowManager.java
Patchset4 : Update commit message
Patchset5 : Address code formating comments
Patchset6 : Whitespace

Altaf-Mahdi
Add left gesture for edge gesture service

Change-Id: I65a15c6f5e662e429a818484de6b71e81c7ae713

3 files changed, 45 insertions, 2 deletions

diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/NavigationBarView.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/NavigationBarView.java
index cbb686c..6c6e207 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/NavigationBarView.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/NavigationBarView.java
@@ -69,6 +69,7 @@ public class NavigationBarView extends LinearLayout {
     int mBarSize;
     boolean mVertical;
     boolean mScreenOn;
+    boolean mLeftInLandscape;
 
     boolean mShowMenu;
     int mDisabledFlags = 0;
@@ -451,6 +452,11 @@ public class NavigationBarView extends LinearLayout {
         return mVertical;
     }
 
+    public void setLeftInLandscape(boolean leftInLandscape) {
+        mLeftInLandscape = leftInLandscape;
+        mDeadZone.setStartFromRight(leftInLandscape);
+    }
+
     public void reorient() {
         final int rot = mDisplay.getRotation();
         for (int i=0; i<4; i++) {
@@ -463,6 +469,7 @@ public class NavigationBarView extends LinearLayout {
         getImeSwitchButton().setOnClickListener(mImeSwitcherClickListener);
 
         mDeadZone = (DeadZone) mCurrentView.findViewById(R.id.deadzone);
+        mDeadZone.setStartFromRight(mLeftInLandscape);
 
         // force the low profile & disabled states into compliance
         mBarTransitions.init();
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java
index e957ab8..b541416 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java
@@ -418,6 +418,12 @@ public class PhoneStatusBar extends BaseStatusBar implements DemoMode,
             mAutomaticBrightness = mode != Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL;
             mBrightnessControl = Settings.System.getInt(
                     resolver, Settings.System.STATUS_BAR_BRIGHTNESS_CONTROL, 0) == 1;
+
+            if (mNavigationBarView != null) {
+                boolean navLeftInLandscape = Settings.System.getInt(resolver,
+                        Settings.System.NAVBAR_LEFT_IN_LANDSCAPE, 0) == 1;
+                mNavigationBarView.setLeftInLandscape(navLeftInLandscape);
+            }
         }
     }
 
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/policy/DeadZone.java b/packages/SystemUI/src/com/android/systemui/statusbar/policy/DeadZone.java
index 6eb88be..9864a0a 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/policy/DeadZone.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/policy/DeadZone.java
@@ -46,6 +46,7 @@ public class DeadZone extends View {
     // mHold ms, then move back over the course of mDecay ms
     private int mHold, mDecay;
     private boolean mVertical;
+    private boolean mStartFromRight;
     private long mLastPokeTime;
 
     private final Runnable mDebugFlash = new Runnable() {
@@ -73,6 +74,7 @@ public class DeadZone extends View {
 
         int index = a.getInt(R.styleable.DeadZone_orientation, -1);
         mVertical = (index == VERTICAL);
+        mStartFromRight = false; // Assume deadzone is starting from the left side of the zone
 
         if (DEBUG)
             Slog.v(TAG, this + " size=[" + mSizeMin + "-" + mSizeMax + "] hold=" + mHold
@@ -100,6 +102,7 @@ public class DeadZone extends View {
         mShouldFlash = dbg;
         mFlashFrac = 0f;
         postInvalidate();
+        mFlashFrac = dbg ? 1f : 0f;
     }
 
     // I made you a touch event...
@@ -117,7 +120,19 @@ public class DeadZone extends View {
                 Slog.v(TAG, this + " ACTION_DOWN: " + event.getX() + "," + event.getY());
             }
             int size = (int) getSize(event.getEventTime());
-            if ((mVertical && event.getX() < size) || event.getY() < size) {
+            boolean isCaptured;
+            if (mVertical && mStartFromRight) {
+                // Landscape on the left side of the screen
+                float pixelsFromRight = getWidth() - event.getX();
+                isCaptured = 0 <= pixelsFromRight && pixelsFromRight < size;
+            } else if (mVertical) {
+                // Landscape
+                isCaptured = event.getX() < size;
+            } else {
+                // Portrait
+                isCaptured = event.getY() < size;
+            }
+            if (isCaptured) {
                 if (CHATTY) {
                     Slog.v(TAG, "consuming errant click: (" + event.getX() + "," + event.getY() + ")");
                 }
@@ -147,6 +162,11 @@ public class DeadZone extends View {
         return mFlashFrac;
     }
 
+    public void setStartFromRight(boolean startFromRight) {
+        mStartFromRight = startFromRight;
+        if (mShouldFlash) postInvalidate();
+    }
+
     @Override
     public void onDraw(Canvas can) {
         if (!mShouldFlash || mFlashFrac <= 0f) {
@@ -154,7 +174,17 @@ public class DeadZone extends View {
         }
 
         final int size = (int) getSize(SystemClock.uptimeMillis());
-        can.clipRect(0, 0, mVertical ? size : can.getWidth(), mVertical ? can.getHeight() : size);
+        if (mVertical && mStartFromRight) {
+            // Landscape on the left side of the screen
+            can.clipRect(can.getWidth() - size, 0, can.getWidth(), can.getHeight());
+        } else if (mVertical) {
+            // Landscape
+            can.clipRect(0, 0, size, can.getHeight());
+        } else {
+            // Portrait
+            can.clipRect(0, 0, can.getWidth(), size);
+        }
+
         final float frac = DEBUG ? (mFlashFrac - 0.5f) + 0.5f : mFlashFrac;
         can.drawARGB((int) (frac * 0xFF), 0xDD, 0xEE, 0xAA);