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      1 /*
      2  * Copyright (C) 2015 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package androidx.core.graphics.drawable;
     18 
     19 import android.content.res.ColorStateList;
     20 import android.content.res.Resources;
     21 import android.graphics.Outline;
     22 import android.graphics.PorterDuff;
     23 import android.graphics.Rect;
     24 import android.graphics.drawable.Drawable;
     25 import android.graphics.drawable.DrawableContainer;
     26 import android.graphics.drawable.GradientDrawable;
     27 import android.graphics.drawable.InsetDrawable;
     28 import android.graphics.drawable.RippleDrawable;
     29 import android.os.Build;
     30 import android.util.Log;
     31 
     32 import androidx.annotation.NonNull;
     33 import androidx.annotation.Nullable;
     34 import androidx.annotation.RequiresApi;
     35 
     36 import java.lang.reflect.Method;
     37 
     38 @RequiresApi(21)
     39 class WrappedDrawableApi21 extends WrappedDrawableApi14 {
     40     private static final String TAG = "WrappedDrawableApi21";
     41     private static Method sIsProjectedDrawableMethod;
     42 
     43     WrappedDrawableApi21(Drawable drawable) {
     44         super(drawable);
     45         findAndCacheIsProjectedDrawableMethod();
     46     }
     47 
     48     WrappedDrawableApi21(DrawableWrapperState state, Resources resources) {
     49         super(state, resources);
     50         findAndCacheIsProjectedDrawableMethod();
     51     }
     52 
     53     @Override
     54     public void setHotspot(float x, float y) {
     55         mDrawable.setHotspot(x, y);
     56     }
     57 
     58     @Override
     59     public void setHotspotBounds(int left, int top, int right, int bottom) {
     60         mDrawable.setHotspotBounds(left, top, right, bottom);
     61     }
     62 
     63     @Override
     64     public void getOutline(@NonNull Outline outline) {
     65         mDrawable.getOutline(outline);
     66     }
     67 
     68     @NonNull
     69     @Override
     70     public Rect getDirtyBounds() {
     71         return mDrawable.getDirtyBounds();
     72     }
     73 
     74     @Override
     75     public void setTintList(ColorStateList tint) {
     76         if (isCompatTintEnabled()) {
     77             super.setTintList(tint);
     78         } else {
     79             mDrawable.setTintList(tint);
     80         }
     81     }
     82 
     83     @Override
     84     public void setTint(int tintColor) {
     85         if (isCompatTintEnabled()) {
     86             super.setTint(tintColor);
     87         } else {
     88             mDrawable.setTint(tintColor);
     89         }
     90     }
     91 
     92     @Override
     93     public void setTintMode(PorterDuff.Mode tintMode) {
     94         if (isCompatTintEnabled()) {
     95             super.setTintMode(tintMode);
     96         } else {
     97             mDrawable.setTintMode(tintMode);
     98         }
     99     }
    100 
    101     @Override
    102     public boolean setState(@NonNull int[] stateSet) {
    103         if (super.setState(stateSet)) {
    104             // Manually invalidate because the framework doesn't currently force an invalidation
    105             // on a state change
    106             invalidateSelf();
    107             return true;
    108         }
    109         return false;
    110     }
    111 
    112     @Override
    113     protected boolean isCompatTintEnabled() {
    114         if (Build.VERSION.SDK_INT == 21) {
    115             final Drawable drawable = mDrawable;
    116             return drawable instanceof GradientDrawable
    117                     || drawable instanceof DrawableContainer
    118                     || drawable instanceof InsetDrawable
    119                     || drawable instanceof RippleDrawable;
    120         }
    121         return false;
    122     }
    123 
    124     /**
    125      * This method is overriding hidden framework method in {@link Drawable}. It is used by the
    126      * system and thus it should not be removed.
    127      */
    128     public boolean isProjected() {
    129         if (mDrawable != null && sIsProjectedDrawableMethod != null) {
    130             try {
    131                 return (Boolean) sIsProjectedDrawableMethod.invoke(mDrawable);
    132             } catch (Exception ex) {
    133                 Log.w(TAG, "Error calling Drawable#isProjected() method", ex);
    134             }
    135         }
    136 
    137         return false;
    138     }
    139 
    140     @NonNull
    141     @Override
    142     DrawableWrapperState mutateConstantState() {
    143         return new DrawableWrapperStateLollipop(mState, null);
    144     }
    145 
    146     private static class DrawableWrapperStateLollipop extends DrawableWrapperState {
    147         DrawableWrapperStateLollipop(@Nullable DrawableWrapperState orig,
    148                 @Nullable Resources res) {
    149             super(orig, res);
    150         }
    151 
    152         @NonNull
    153         @Override
    154         public Drawable newDrawable(@Nullable Resources res) {
    155             return new WrappedDrawableApi21(this, res);
    156         }
    157     }
    158 
    159     private void findAndCacheIsProjectedDrawableMethod() {
    160         if (sIsProjectedDrawableMethod == null) {
    161             try {
    162                 sIsProjectedDrawableMethod = Drawable.class.getDeclaredMethod("isProjected");
    163             } catch (Exception ex) {
    164                 Log.w(TAG, "Failed to retrieve Drawable#isProjected() method", ex);
    165             }
    166         }
    167     }
    168 }
    169