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Commit 3e7c1bd8 authored by Vania Desmonda's avatar Vania Desmonda
Browse files

Add ADB shell command to set dim amount using an arbitrary UID 

Bug: 217718160
Test: manual, atest WallpaperManagerTest
Change-Id: Ie006b8d3acb5e6513ad4523080a695c286f32742
parent 022ade7a

services/core/java/com/android/server/wallpaper/WallpaperManagerService.java

+13 −1
Original line number Diff line number Diff line
@@ -2591,8 +2591,20 @@ public class WallpaperManagerService extends IWallpaperManager.Stub 
     */

    @Override

    public void setWallpaperDimAmount(float dimAmount) throws RemoteException {

        setWallpaperDimAmountForUid(Binder.getCallingUid(), dimAmount);

    }



    /**

     * Sets wallpaper dim amount for a given UID. This only applies to FLAG_SYSTEM wallpaper as the

     * lock screen does not have a wallpaper component, so we use mWallpaperMap.

     *

     * @param uid Caller UID that wants to set the wallpaper dim amount

     * @param dimAmount Dim amount where 0f reverts any dimming applied by the caller (fully bright)

     *                  and 1f is fully black

     * @throws RemoteException

     */

    public void setWallpaperDimAmountForUid(int uid, float dimAmount) {

        checkPermission(android.Manifest.permission.SET_WALLPAPER_DIM_AMOUNT);

        int uid = Binder.getCallingUid();

        final long ident = Binder.clearCallingIdentity();

        try {

            synchronized (mLock) {

services/core/java/com/android/server/wallpaper/WallpaperManagerShellCommand.java

+19 −0
Original line number Diff line number Diff line
@@ -43,6 +43,8 @@ public class WallpaperManagerShellCommand extends ShellCommand { 
        switch(cmd) {

            case "set-dim-amount":

                return setWallpaperDimAmount();

            case "dim-with-uid":

                return setDimmingWithUid();

            case "get-dim-amount":

                return getWallpaperDimAmount();

            case "-h":
@@ -64,6 +66,10 @@ public class WallpaperManagerShellCommand extends ShellCommand { 
        pw.println("  set-dim-amount DIMMING");

        pw.println("    Sets the current dimming value to DIMMING (a number between 0 and 1).");

        pw.println();

        pw.println("  dim-with-uid UID DIMMING");

        pw.println("    Sets the wallpaper dim amount to DIMMING as if an app with uid, UID, "

                + "called it.");

        pw.println();

        pw.println("  get-dim-amount");

        pw.println("    Get the current wallpaper dim amount.");

    }
@@ -92,4 +98,17 @@ public class WallpaperManagerShellCommand extends ShellCommand { 
        getOutPrintWriter().println("The current wallpaper dim amount is: " + dimAmount);

        return 0;

    }



    /**

     * Sets the wallpaper dim amount for an arbitrary UID to simulate multiple applications setting

     * a dim amount on the wallpaper.

     */

    private int setDimmingWithUid() {

        int mockUid = Integer.parseInt(getNextArgRequired());

        float mockDimAmount = Float.parseFloat(getNextArgRequired());

        mService.setWallpaperDimAmountForUid(mockUid, mockDimAmount);

        getOutPrintWriter().println("Dimming the wallpaper for UID: " + mockUid + " to: "

                + mockDimAmount);

        return 0;

    }

}