[Framework] Add config to apply custom shadow on header images

To make text and status icons better visible with bright
images if required.

- Fix headershadow derp, thanks to @xyyx

Change-Id: I393d7eb55425e72a953947f0ce0a2b33f5ed3ef8

Author: maxwen

core/java/android/provider/Settings.java

@@ -3818,6 +3818,14 @@ public boolean validate(String value) {
          */
         public static final String STATUS_BAR_CUSTOM_HEADER = "status_bar_custom_header";
 
+        /**
+         *
+         * Whether to apply a shadow on top of the header image
+         * value is the alpha value of the shadow image is 0 -> no shadow -> 255 black
+         * @hide
+         */
+        public static final String STATUS_BAR_CUSTOM_HEADER_SHADOW = "status_bar_custom_header_shadow";
+
         /**
          * Current active provider
          * @hide
@@ -4454,6 +4462,186 @@ public boolean validate(String value) {
          * @hide
          */
         public static final String PA_PIE_BUTTON_COLOR = "pa_pie_button_color";
+<<<<<<< HEAD
+=======
+
+        /**
+         * @hide
+         */
+        public static final String PA_PIE_SNAP_BACKGROUND = "pa_pie_snap_background";
+
+        /**
+         * @hide
+         */
+        public static final String PA_PIE_BACKGROUND = "pa_pie_background";
+
+        /**
+         * @hide
+         */
+        public static final String PA_PIE_SELECT = "pa_pie_select";
+
+        /**
+         * @hide
+         */
+        public static final String PA_PIE_OUTLINES = "pa_pie_outlines";
+
+        /**
+         * @hide
+         */
+        public static final String PA_PIE_STATUS_CLOCK = "pa_pie_status_clock";
+
+        /**
+         * @hide
+         */
+        public static final String PA_PIE_STATUS = "pa_pie_status";
+
+        /**
+         * AOKP Custom System Animations
+         * @hide
+         */
+        public static final String[] ACTIVITY_ANIMATION_CONTROLS = new String[] {
+                "activity_open",
+                "activity_close",
+                "task_open",
+                "task_close",
+                "task_to_front",
+                "task_to_back",
+                "wallpaper_open",
+                "wallpaper_close",
+                "wallpaper_intra_open",
+                "wallpaper_intra_close",
+                "task_open_behind",
+        };  
+        public static final String ANIMATION_CONTROLS_DURATION = "animation_controls_duration";
+
+        public static final String ANIMATION_CONTROLS_NO_OVERRIDE = "animation_controls_no_override";
+
+        public static final String ANIMATION_CONTROLS_EXIT_ONLY = "animation_controls_exit_only";
+
+        public static final String ANIMATION_CONTROLS_REVERSE_EXIT = "animation_controls_reverse_exit";
+
+        /**
+         * ListView Animations
+         * 0 == None
+         * 1 == Wave (Left)
+         * 2 == Wave (Right)
+         * 3 == Scale
+         * 4 == Alpha
+         * 5 == Stack (Top)
+         * 6 == Stack (Bottom)
+         * 7 == Translate (Left)
+         * 8 == Translate (Right)
+          * @hide
+          */
+        public static final String LISTVIEW_ANIMATION = "listview_animation";
+        
+         /**
+         * ListView Interpolators
+         * 0 == None
+         * 1 == accelerate_interpolator
+         * 2 == decelerate_interpolator
+         * 3 == accelerate_decelerate_interpolator
+         * 4 == anticipate_interpolator
+         * 5 == overshoot_interpolator
+         * 6 == anticipate_overshoot_interpolator
+         * 7 == bounce_interpolator
+         * @hide
+         */
+        public static final String LISTVIEW_INTERPOLATOR = "listview_interpolator";
+
+        /**
+         * Toast animations
+         *
+         * @hide
+         */
+        public static final String TOAST_ANIMATION = "toast_animation";
+
+        /**
+         *
+         * @hide
+         */
+        public static final String ANIMATION_IME_DURATION = "animation_ime_duration";
+
+        /**
+         *
+         * @hide
+         */
+        public static final String ANIMATION_IME_ENTER = "animation_ime_enter";
+
+        /**
+         *
+         * @hide
+         */
+        public static final String ANIMATION_IME_EXIT = "animation_ime_exit";
+
+        /**
+         *
+         * @hide
+         */
+        public static final String ANIMATION_IME_INTERPOLATOR = "animation_ime_interpolator";
+
+        /**
+         * @hide
+         */
+        public static final String PA_PIE_CHEVRON = "pa_pie_chevron";
+
+        /**
+         * @hide
+         */
+        public static final String PA_PIE_ALWAYS_RIGHT = "pa_pie_always_right";
+
+        /**
+         * Defines the shortcuts to be shown on lockscreen
+         * Usage is like this: target:icon|target:icon|target:icon
+         * if :icon is not set, default application icon will be used
+         * @hide
+         */
+        public static final String LOCKSCREEN_SHORTCUTS = "lockscreen_shortcuts";
+
+        /**
+         * Whether shorcuts open with normal or longpress
+         * @hide
+         */
+        public static final String LOCKSCREEN_SHORTCUTS_LONGPRESS = "lockscreen_shortcuts_longpress";
+
+        /**
+         * Volume key controls ringtone or media sound stream
+         * @hide
+         */
+        public static final String VOLUME_KEYS_CONTROL_RING_STREAM =
+                "volume_keys_control_ring_stream";
+
+        /**
+         * Enable built in CAF task manager
+         * @hide
+         */
+        public static final String ENABLE_TASK_MANAGER = "enable_task_manager";
+
+        /**
+         * Enable vibration when double tapping the power button for camera
+         * @hide
+         */
+        public static final String DOUBLE_TAP_VIBRATE = "double_tap_vibrate";
+
+        /**
+         * Whether to enable status and navigation bar color in battery saver mode.
+         *
+         * @hide
+         */
+        public static final String BATTERY_SAVER_MODE_COLOR = "battery_save_mode_color";
+
+        /**
+         * Timeout for ambient display notification
+         * @hide
+         */
+        public static final String DOZE_TIMEOUT = "doze_timeout";
+
+        /**
+         * Use pick up gesture sensor as doze pulse trigger
+         * @hide
+         */
+        public static final String DOZE_TRIGGER_PICKUP = "doze_trigger_pickup";
+>>>>>>> 2fd6ca2... [Framework] Add config to apply custom shadow on header images
 
         /**
          * @hide

packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java

@@ -607,6 +607,10 @@ protected void observe() {
             resolver.registerContentObserver(Settings.System.getUriFor(
                     Settings.System.QS_NUM_TILE_ROWS), false, this,
                     UserHandle.USER_ALL);
+            resolver.registerContentObserver(Settings.System.getUriFor(
+                    Settings.System.STATUS_BAR_CUSTOM_HEADER_SHADOW), false, this,
+                    UserHandle.USER_ALL);
+
             update();
         }
 

packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBarHeaderView.java

@@ -30,6 +30,7 @@
 import android.graphics.Outline;
 import android.graphics.Rect;
 import android.graphics.drawable.Animatable;
+import android.graphics.drawable.ColorDrawable;
 import android.graphics.drawable.Drawable;
 import android.graphics.drawable.RippleDrawable;
 import android.graphics.drawable.TransitionDrawable;
@@ -516,6 +517,7 @@ private void updateVisibilities() {
             mDockBatteryLevel.setForceShown(mExpanded && mShowBatteryTextExpanded);
             mDockBatteryLevel.setVisibility(View.VISIBLE);
         }
+        applyHeaderBackgroundShadow();
     }
 
     private void updateSignalClusterDetachment() {
@@ -1294,6 +1296,19 @@ private void setNotificationPanelHeaderBackground(final Drawable dw, final boole
         } else {
             mBackgroundImage.setImageDrawable(dw);
         }
+        applyHeaderBackgroundShadow();
+    }
+
+    private void applyHeaderBackgroundShadow() {
+        final int headerShadow = Settings.System.getIntForUser(mContext.getContentResolver(),
+                Settings.System.STATUS_BAR_CUSTOM_HEADER_SHADOW, 0,
+                UserHandle.USER_CURRENT);
+
+        if (mBackgroundImage != null) {
+            ColorDrawable shadow = new ColorDrawable(Color.BLACK);
+            shadow.setAlpha(headerShadow);
+            mBackgroundImage.setForeground(shadow);
+        }
     }
 
     @Override