src/com/android/settings/drawable/DrawableWrapper.java

/*
 * Copyright (C) 2011 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.android.settings.drawable;

import android.graphics.Canvas;
import android.graphics.ColorFilter;
import android.graphics.Rect;
import android.graphics.Region;
import android.graphics.drawable.Drawable;
import android.view.View;

import com.android.internal.util.Preconditions;

/**
 * Base wrapper that delegates all calls to another {@link Drawable}. The
 * wrapped {@link Drawable} <em>must</em> be fully released from any
 * {@link View} before wrapping, otherwise internal {@link Drawable.Callback}
 * may be dropped.
 */
public class DrawableWrapper extends Drawable implements Drawable.Callback {
    private final Drawable mDrawable;

    public DrawableWrapper(Drawable drawable) {
        mDrawable = Preconditions.checkNotNull(drawable);
        mDrawable.setCallback(this);
    }

    @Override
    public void draw(Canvas canvas) {
        mDrawable.draw(canvas);
    }

    @Override
    public void setBounds(int left, int top, int right, int bottom) {
        super.setBounds(left, top, right, bottom);
        mDrawable.setBounds(left, top, right, bottom);
    }

    @Override
    public void setChangingConfigurations(int configs) {
        mDrawable.setChangingConfigurations(configs);
    }

    @Override
    public int getChangingConfigurations() {
        return mDrawable.getChangingConfigurations();
    }

    @Override
    public void setDither(boolean dither) {
        mDrawable.setDither(dither);
    }

    @Override
    public void setFilterBitmap(boolean filter) {
        mDrawable.setFilterBitmap(filter);
    }

    @Override
    public void setAlpha(int alpha) {
        mDrawable.setAlpha(alpha);
    }

    @Override
    public void setColorFilter(ColorFilter cf) {
        mDrawable.setColorFilter(cf);
    }

    @Override
    public boolean isStateful() {
        return mDrawable.isStateful();
    }

    @Override
    public boolean setState(final int[] stateSet) {
        return mDrawable.setState(stateSet);
    }

    @Override
    public int[] getState() {
        return mDrawable.getState();
    }

    @Override
    public void jumpToCurrentState() {
        mDrawable.jumpToCurrentState();
    }

    @Override
    public Drawable getCurrent() {
        return mDrawable.getCurrent();
    }

    @Override
    public boolean setVisible(boolean visible, boolean restart) {
        return super.setVisible(visible, restart) || mDrawable.setVisible(visible, restart);
    }

    @Override
    public int getOpacity() {
        return mDrawable.getOpacity();
    }

    @Override
    public Region getTransparentRegion() {
        return mDrawable.getTransparentRegion();
    }

    @Override
    public int getIntrinsicWidth() {
        return mDrawable.getIntrinsicWidth();
    }

    @Override
    public int getIntrinsicHeight() {
        return mDrawable.getIntrinsicHeight();
    }

    @Override
    public int getMinimumWidth() {
        return mDrawable.getMinimumWidth();
    }

    @Override
    public int getMinimumHeight() {
        return mDrawable.getMinimumHeight();
    }

    @Override
    public boolean getPadding(Rect padding) {
        return mDrawable.getPadding(padding);
    }

    /** {@inheritDoc} */
    public void invalidateDrawable(Drawable who) {
        invalidateSelf();
    }

    /** {@inheritDoc} */
    public void scheduleDrawable(Drawable who, Runnable what, long when) {
        scheduleSelf(what, when);
    }

    /** {@inheritDoc} */
    public void unscheduleDrawable(Drawable who, Runnable what) {
        unscheduleSelf(what);
    }
}