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Commit 18caa92d authored by Shan Huang's avatar Shan Huang
Browse files

Add a background scrim to launcher for text protection. 

This is a temporary approach to dim the wallpaper. Flip on ENABLE_WALLPAPER_SCRIM to enable the scrim.

In the long term we'll dim the wallpaper layer directly.

Test: Manual
Bug: 185890335
Change-Id: Ia88597bbcba6ae1536015d1b2a35260cab4a4453
parent 739420bc

res/values/colors.xml

+1 −0
Original line number Original line Diff line number Diff line
@@ -58,5 +58,6 @@ 
    <color name="text_color_tertiary_dark">#CCFFFFFF</color>

    <color name="text_color_tertiary_dark">#CCFFFFFF</color>





    <color name="wallpaper_popup_scrim">?android:attr/colorAccent</color>

    <color name="wallpaper_popup_scrim">?android:attr/colorAccent</color>

    <color name="wallpaper_scrim_color">#0D878787</color>





</resources>
 
</resources>

res/xml/dynamic_resources.xml

+2 −2
Original line number Original line Diff line number Diff line
@@ -4,6 +4,6 @@ 
    <entry id="@color/delete_target_hover_tint" />

    <entry id="@color/delete_target_hover_tint" />

    <entry id="@color/delete_target_hover_tint" />

    <entry id="@color/delete_target_hover_tint" />

    <entry id="@color/delete_target_hover_tint" />

    <entry id="@color/delete_target_hover_tint" />



    <entry id="@color/wallpaper_scrim_color" />





</DynamicResources>
 
</DynamicResources>

src/com/android/launcher3/config/FeatureFlags.java

+4 −0
Original line number Original line Diff line number Diff line
@@ -240,6 +240,10 @@ public final class FeatureFlags { 
    public static final BooleanFlag PROTOTYPE_APP_CLOSE = getDebugFlag(

    public static final BooleanFlag PROTOTYPE_APP_CLOSE = getDebugFlag(

            "PROTOTYPE_APP_CLOSE", false, "Enables new app close");

            "PROTOTYPE_APP_CLOSE", false, "Enables new app close");





    public static final BooleanFlag ENABLE_WALLPAPER_SCRIM = getDebugFlag(

            "ENABLE_WALLPAPER_SCRIM", false,

            "Enables scrim over wallpaper for text protection.");



    public static void initialize(Context context) {

    public static void initialize(Context context) {

        synchronized (sDebugFlags) {

        synchronized (sDebugFlags) {

            for (DebugFlag flag : sDebugFlags) {

            for (DebugFlag flag : sDebugFlags) {

src/com/android/launcher3/graphics/SysUiScrim.java

+20 −1
Original line number Original line Diff line number Diff line
@@ -45,7 +45,10 @@ import com.android.launcher3.BaseDraggingActivity; 
import com.android.launcher3.R;

import com.android.launcher3.R;

import com.android.launcher3.ResourceUtils;

import com.android.launcher3.ResourceUtils;

import com.android.launcher3.Utilities;

import com.android.launcher3.Utilities;

import com.android.launcher3.config.FeatureFlags;

import com.android.launcher3.util.DynamicResource;

import com.android.launcher3.util.Themes;

import com.android.launcher3.util.Themes;

import com.android.systemui.plugins.ResourceProvider;





/**

/**

 * View scrim which draws behind hotseat and workspace

 * View scrim which draws behind hotseat and workspace
@@ -101,8 +104,10 @@ public class SysUiScrim implements View.OnAttachStateChangeListener { 
    private static final int ALPHA_MASK_BITMAP_DP = 200;

    private static final int ALPHA_MASK_BITMAP_DP = 200;

    private static final int ALPHA_MASK_WIDTH_DP = 2;

    private static final int ALPHA_MASK_WIDTH_DP = 2;





    private boolean mDrawTopScrim, mDrawBottomScrim;

    private boolean mDrawTopScrim, mDrawBottomScrim, mDrawWallpaperScrim;





    private final RectF mWallpaperScrimRect = new RectF();

    private final Paint mWallpaperScrimPaint = new Paint();

    private final RectF mFinalMaskRect = new RectF();

    private final RectF mFinalMaskRect = new RectF();

    private final Paint mBottomMaskPaint = new Paint(Paint.FILTER_BITMAP_FLAG);

    private final Paint mBottomMaskPaint = new Paint(Paint.FILTER_BITMAP_FLAG);

    private final Bitmap mBottomMask;

    private final Bitmap mBottomMask;
@@ -117,6 +122,7 @@ public class SysUiScrim implements View.OnAttachStateChangeListener { 




    private boolean mAnimateScrimOnNextDraw = false;

    private boolean mAnimateScrimOnNextDraw = false;

    private float mSysUiAnimMultiplier = 1;

    private float mSysUiAnimMultiplier = 1;

    private int mWallpaperScrimMaxAlpha;





    public SysUiScrim(View view) {

    public SysUiScrim(View view) {

        mRoot = view;

        mRoot = view;
@@ -127,6 +133,14 @@ public class SysUiScrim implements View.OnAttachStateChangeListener { 
        mBottomMask = mTopScrim == null ? null : createDitheredAlphaMask();

        mBottomMask = mTopScrim == null ? null : createDitheredAlphaMask();

        mHideSysUiScrim = mTopScrim == null;

        mHideSysUiScrim = mTopScrim == null;





        mDrawWallpaperScrim = FeatureFlags.ENABLE_WALLPAPER_SCRIM.get()

                && !Themes.getAttrBoolean(view.getContext(), R.attr.isMainColorDark)

                && !Themes.getAttrBoolean(view.getContext(), R.attr.isWorkspaceDarkText);

        ResourceProvider rp = DynamicResource.provider(view.getContext());

        int wallpaperScrimColor = rp.getColor(R.color.wallpaper_scrim_color);

        mWallpaperScrimMaxAlpha = Color.alpha(wallpaperScrimColor);

        mWallpaperScrimPaint.setColor(wallpaperScrimColor);



        view.addOnAttachStateChangeListener(this);

        view.addOnAttachStateChangeListener(this);

    }

    }
@@ -151,6 +165,9 @@ public class SysUiScrim implements View.OnAttachStateChangeListener { 
                mAnimateScrimOnNextDraw = false;

                mAnimateScrimOnNextDraw = false;

            }

            }





            if (mDrawWallpaperScrim) {

                canvas.drawRect(mWallpaperScrimRect, mWallpaperScrimPaint);

            }

            if (mDrawTopScrim) {

            if (mDrawTopScrim) {

                mTopScrim.draw(canvas);

                mTopScrim.draw(canvas);

            }

            }
@@ -214,6 +231,7 @@ public class SysUiScrim implements View.OnAttachStateChangeListener { 
            mTopScrim.setBounds(0, 0, w, h);

            mTopScrim.setBounds(0, 0, w, h);

            mFinalMaskRect.set(0, h - mMaskHeight, w, h);

            mFinalMaskRect.set(0, h - mMaskHeight, w, h);

        }

        }

        mWallpaperScrimRect.set(0, 0, w, h);

    }

    }





    private void setSysUiProgress(float progress) {

    private void setSysUiProgress(float progress) {
@@ -236,6 +254,7 @@ public class SysUiScrim implements View.OnAttachStateChangeListener { 
        if (mTopScrim != null) {

        if (mTopScrim != null) {

            mTopScrim.setAlpha(Math.round(255 * factor));

            mTopScrim.setAlpha(Math.round(255 * factor));

        }

        }

        mWallpaperScrimPaint.setAlpha(Math.round(mWallpaperScrimMaxAlpha * factor));

    }

    }





    private Bitmap createDitheredAlphaMask() {

    private Bitmap createDitheredAlphaMask() {