/*******************************************************************************
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* Copyright 2013 Sergey Tarasevich
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*******************************************************************************/
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package com.nostra13.universalimageloader.core.display;
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import android.graphics.*;
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import com.nostra13.universalimageloader.core.assist.LoadedFrom;
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import com.nostra13.universalimageloader.core.imageaware.ImageAware;
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import com.nostra13.universalimageloader.core.imageaware.ImageViewAware;
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/**
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* Can display bitmap with rounded corners and vignette effect. This implementation works only with ImageViews wrapped
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* in ImageViewAware.
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* <br />
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* This implementation is inspired by
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* <a href="http://www.curious-creature.org/2012/12/11/android-recipe-1-image-with-rounded-corners/">
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* Romain Guy's article</a>. It rounds images using custom drawable drawing. Original bitmap isn't changed.
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* <br />
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* <br />
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* If this implementation doesn't meet your needs then consider
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* <a href="https://github.com/vinc3m1/RoundedImageView">this project</a> for usage.
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*
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* @author Sergey Tarasevich (nostra13[at]gmail[dot]com)
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* @since 1.9.1
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*/
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public class RoundedVignetteBitmapDisplayer extends RoundedBitmapDisplayer {
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public RoundedVignetteBitmapDisplayer(int cornerRadiusPixels, int marginPixels) {
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super(cornerRadiusPixels, marginPixels);
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}
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@Override
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public void display(Bitmap bitmap, ImageAware imageAware, LoadedFrom loadedFrom) {
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if (!(imageAware instanceof ImageViewAware)) {
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throw new IllegalArgumentException("ImageAware should wrap ImageView. ImageViewAware is expected.");
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}
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imageAware.setImageDrawable(new RoundedVignetteDrawable(bitmap, cornerRadius, margin));
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}
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protected static class RoundedVignetteDrawable extends RoundedDrawable {
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RoundedVignetteDrawable(Bitmap bitmap, int cornerRadius, int margin) {
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super(bitmap, cornerRadius, margin);
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}
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@Override
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protected void onBoundsChange(Rect bounds) {
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super.onBoundsChange(bounds);
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RadialGradient vignette = new RadialGradient(
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mRect.centerX(), mRect.centerY() * 1.0f / 0.7f, mRect.centerX() * 1.3f,
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new int[]{0, 0, 0x7f000000}, new float[]{0.0f, 0.7f, 1.0f},
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Shader.TileMode.CLAMP);
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Matrix oval = new Matrix();
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oval.setScale(1.0f, 0.7f);
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vignette.setLocalMatrix(oval);
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paint.setShader(new ComposeShader(bitmapShader, vignette, PorterDuff.Mode.SRC_OVER));
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}
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}
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}
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