com.abewy.android.apps.contacts.widget.BezelImageView.java Source code

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Here is the source code for com.abewy.android.apps.contacts.widget.BezelImageView.java

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/*
 * Original code by Google
 * Modified by Jonathan GERBAUD, Abewy
 * 
 * Copyright 2012 Google Inc.
 * 
 * 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.abewy.android.apps.contacts.widget;

import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.Rect;
import android.graphics.drawable.Drawable;
import android.support.v4.view.ViewCompat;
import android.util.AttributeSet;
import com.abewy.android.apps.contacts.R;
import com.abewy.android.extended.widget.SquareImageView;

/**
 * An {@link android.widget.ImageView} that draws its contents inside a mask and draws a border
 * drawable on top. This is useful for applying a beveled look to image contents, but is also
 * flexible enough for use with other desired aesthetics.
 */
public class BezelImageView extends SquareImageView {
    private Rect mBounds;

    private Drawable mBorderDrawable;

    public BezelImageView(Context context) {
        this(context, null);
    }

    public BezelImageView(Context context, AttributeSet attrs) {
        this(context, attrs, 0);
    }

    public BezelImageView(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);

        // Attribute initialization
        final TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.BezelImageView, defStyle, 0);

        setBorderDrawable(a.getDrawable(R.styleable.BezelImageView_borderDrawable));

        a.recycle();
    }

    protected void setBorderDrawable(Drawable borderDrawable) {
        if (mBorderDrawable != null) {
            mBorderDrawable.setCallback(null);
        }

        mBorderDrawable = borderDrawable;

        if (mBorderDrawable != null) {
            mBorderDrawable.setCallback(this);
        }
    }

    @Override
    protected boolean setFrame(int l, int t, int r, int b) {
        final boolean changed = super.setFrame(l, t, r, b);
        mBounds = new Rect(0, 0, r - l, b - t);

        if (mBorderDrawable != null) {
            mBorderDrawable.setBounds(mBounds);
        }

        return changed;
    }

    @Override
    protected void onDraw(Canvas canvas) {
        if (mBounds == null) {
            return;
        }

        int width = mBounds.width();
        int height = mBounds.height();

        if (width == 0 || height == 0) {
            return;
        }

        super.onDraw(canvas);

        if (mBorderDrawable != null) {
            mBorderDrawable.draw(canvas);
        }
    }

    @Override
    protected void drawableStateChanged() {
        super.drawableStateChanged();

        if (mBorderDrawable != null && mBorderDrawable.isStateful()) {
            mBorderDrawable.setState(getDrawableState());
        }
        if (isDuplicateParentStateEnabled()) {
            ViewCompat.postInvalidateOnAnimation(this);
        }
    }

    @Override
    public void invalidateDrawable(Drawable who) {
        if (who == mBorderDrawable) {
            invalidate();
        } else {
            super.invalidateDrawable(who);
        }
    }

    @Override
    protected boolean verifyDrawable(Drawable who) {
        return who == mBorderDrawable || super.verifyDrawable(who);
    }
}