com.nostra13.universalimageloader.core.DisplayImageOptions Maven / Gradle / Ivy
/*******************************************************************************
* Copyright 2011-2013 Sergey Tarasevich
*
* 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.nostra13.universalimageloader.core;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory.Options;
import android.graphics.drawable.Drawable;
import android.os.Handler;
import android.os.Looper;
import com.nostra13.universalimageloader.core.assist.ImageLoadingListener;
import com.nostra13.universalimageloader.core.assist.ImageScaleType;
import com.nostra13.universalimageloader.core.display.BitmapDisplayer;
import com.nostra13.universalimageloader.core.display.SimpleBitmapDisplayer;
import com.nostra13.universalimageloader.core.download.ImageDownloader;
import com.nostra13.universalimageloader.core.process.BitmapProcessor;
/**
* Contains options for image display. Defines:
*
* - whether stub image will be displayed in {@link com.nostra13.universalimageloader.core.imageaware.ImageAware
* image aware view} during image loading
* - whether stub image will be displayed in {@link com.nostra13.universalimageloader.core.imageaware.ImageAware
* image aware view} if empty URI is passed
* - whether stub image will be displayed in {@link com.nostra13.universalimageloader.core.imageaware.ImageAware
* image aware view} if image loading fails
* - whether {@link com.nostra13.universalimageloader.core.imageaware.ImageAware image aware view} should be reset
* before image loading start
* - whether loaded image will be cached in memory
* - whether loaded image will be cached on disc
* - image scale type
* - decoding options (including bitmap decoding configuration)
* - delay before loading of image
* - whether consider EXIF parameters of image
* - auxiliary object which will be passed to {@link ImageDownloader#getStream(String, Object) ImageDownloader}
* - pre-processor for image Bitmap (before caching in memory)
* - post-processor for image Bitmap (after caching in memory, before displaying)
* - how decoded {@link Bitmap} will be displayed
*
*
* You can create instance:
*
* - with {@link Builder}:
* i.e. :
* new {@link DisplayImageOptions}.{@link Builder#Builder() Builder()}.{@link Builder#cacheInMemory() cacheInMemory()}.
* {@link Builder#showImageOnLoading(int) showImageOnLoading()}.{@link Builder#build() build()}
*
* - or by static method: {@link #createSimple()}
*
* @author Sergey Tarasevich (nostra13[at]gmail[dot]com)
* @since 1.0.0
*/
public final class DisplayImageOptions {
private final int imageResOnLoading;
private final int imageResForEmptyUri;
private final int imageResOnFail;
private final Drawable imageOnLoading;
private final Drawable imageForEmptyUri;
private final Drawable imageOnFail;
private final boolean resetViewBeforeLoading;
private final boolean cacheInMemory;
private final boolean cacheOnDisc;
private final ImageScaleType imageScaleType;
private final Options decodingOptions;
private final int delayBeforeLoading;
private final boolean considerExifParams;
private final Object extraForDownloader;
private final BitmapProcessor preProcessor;
private final BitmapProcessor postProcessor;
private final BitmapDisplayer displayer;
private final Handler handler;
private final boolean isSyncLoading;
private DisplayImageOptions(Builder builder) {
imageResOnLoading = builder.imageResOnLoading;
imageResForEmptyUri = builder.imageResForEmptyUri;
imageResOnFail = builder.imageResOnFail;
imageOnLoading = builder.imageOnLoading;
imageForEmptyUri = builder.imageForEmptyUri;
imageOnFail = builder.imageOnFail;
resetViewBeforeLoading = builder.resetViewBeforeLoading;
cacheInMemory = builder.cacheInMemory;
cacheOnDisc = builder.cacheOnDisc;
imageScaleType = builder.imageScaleType;
decodingOptions = builder.decodingOptions;
delayBeforeLoading = builder.delayBeforeLoading;
considerExifParams = builder.considerExifParams;
extraForDownloader = builder.extraForDownloader;
preProcessor = builder.preProcessor;
postProcessor = builder.postProcessor;
displayer = builder.displayer;
handler = builder.handler;
isSyncLoading = builder.isSyncLoading;
}
public boolean shouldShowImageOnLoading() {
return imageOnLoading != null || imageResOnLoading != 0;
}
public boolean shouldShowImageForEmptyUri() {
return imageForEmptyUri != null || imageResForEmptyUri != 0;
}
public boolean shouldShowImageOnFail() {
return imageOnFail != null || imageResOnFail != 0;
}
public boolean shouldPreProcess() {
return preProcessor != null;
}
public boolean shouldPostProcess() {
return postProcessor != null;
}
public boolean shouldDelayBeforeLoading() {
return delayBeforeLoading > 0;
}
public Drawable getImageOnLoading(Resources res) {
return imageResOnLoading != 0 ? res.getDrawable(imageResOnLoading) : imageOnLoading;
}
public Drawable getImageForEmptyUri(Resources res) {
return imageResForEmptyUri != 0 ? res.getDrawable(imageResForEmptyUri) : imageForEmptyUri;
}
public Drawable getImageOnFail(Resources res) {
return imageResOnFail != 0 ? res.getDrawable(imageResOnFail) : imageOnFail;
}
public boolean isResetViewBeforeLoading() {
return resetViewBeforeLoading;
}
public boolean isCacheInMemory() {
return cacheInMemory;
}
public boolean isCacheOnDisc() {
return cacheOnDisc;
}
public ImageScaleType getImageScaleType() {
return imageScaleType;
}
public Options getDecodingOptions() {
return decodingOptions;
}
public int getDelayBeforeLoading() {
return delayBeforeLoading;
}
public boolean isConsiderExifParams() {
return considerExifParams;
}
public Object getExtraForDownloader() {
return extraForDownloader;
}
public BitmapProcessor getPreProcessor() {
return preProcessor;
}
public BitmapProcessor getPostProcessor() {
return postProcessor;
}
public BitmapDisplayer getDisplayer() {
return displayer;
}
public Handler getHandler() {
if (isSyncLoading) {
return null;
} else {
if (handler == null) {
if (Looper.myLooper() != Looper.getMainLooper()) {
throw new IllegalStateException("ImageLoader.displayImage(...) must be invoked from the main thread or from Looper thread");
}
return new Handler();
} else {
return handler;
}
}
}
boolean isSyncLoading() {
return isSyncLoading;
}
/**
* Builder for {@link DisplayImageOptions}
*
* @author Sergey Tarasevich (nostra13[at]gmail[dot]com)
*/
public static class Builder {
private int imageResOnLoading = 0;
private int imageResForEmptyUri = 0;
private int imageResOnFail = 0;
private Drawable imageOnLoading = null;
private Drawable imageForEmptyUri = null;
private Drawable imageOnFail = null;
private boolean resetViewBeforeLoading = false;
private boolean cacheInMemory = false;
private boolean cacheOnDisc = false;
private ImageScaleType imageScaleType = ImageScaleType.IN_SAMPLE_POWER_OF_2;
private Options decodingOptions = new Options();
private int delayBeforeLoading = 0;
private boolean considerExifParams = false;
private Object extraForDownloader = null;
private BitmapProcessor preProcessor = null;
private BitmapProcessor postProcessor = null;
private BitmapDisplayer displayer = DefaultConfigurationFactory.createBitmapDisplayer();
private Handler handler = null;
private boolean isSyncLoading = false;
public Builder() {
decodingOptions.inPurgeable = true;
decodingOptions.inInputShareable = true;
}
/**
* Stub image will be displayed in {@link com.nostra13.universalimageloader.core.imageaware.ImageAware
* image aware view} during image loading
*
* @param imageRes Stub image resource
* @deprecated Use {@link #showImageOnLoading(int)} instead
*/
@Deprecated
public Builder showStubImage(int imageRes) {
imageResOnLoading = imageRes;
return this;
}
/**
* Incoming image will be displayed in {@link com.nostra13.universalimageloader.core.imageaware.ImageAware
* image aware view} during image loading
*
* @param imageRes Image resource
*/
public Builder showImageOnLoading(int imageRes) {
imageResOnLoading = imageRes;
return this;
}
/**
* Incoming drawable will be displayed in {@link com.nostra13.universalimageloader.core.imageaware.ImageAware
* image aware view} during image loading.
* This option will be ignored if {@link DisplayImageOptions.Builder#showImageOnLoading(int)} is set.
*/
public Builder showImageOnLoading(Drawable drawable) {
imageOnLoading = drawable;
return this;
}
/**
* Incoming image will be displayed in {@link com.nostra13.universalimageloader.core.imageaware.ImageAware
* image aware view} if empty URI (null or empty
* string) will be passed to ImageLoader.displayImage(...) method.
*
* @param imageRes Image resource
*/
public Builder showImageForEmptyUri(int imageRes) {
imageResForEmptyUri = imageRes;
return this;
}
/**
* Incoming drawable will be displayed in {@link com.nostra13.universalimageloader.core.imageaware.ImageAware
* image aware view} if empty URI (null or empty
* string) will be passed to ImageLoader.displayImage(...) method.
* This option will be ignored if {@link DisplayImageOptions.Builder#showImageForEmptyUri(int)} is set.
*/
public Builder showImageForEmptyUri(Drawable drawable) {
imageForEmptyUri = drawable;
return this;
}
/**
* Incoming image will be displayed in {@link com.nostra13.universalimageloader.core.imageaware.ImageAware
* image aware view} if some error occurs during
* requested image loading/decoding.
*
* @param imageRes Image resource
*/
public Builder showImageOnFail(int imageRes) {
imageResOnFail = imageRes;
return this;
}
/**
* Incoming drawable will be displayed in {@link com.nostra13.universalimageloader.core.imageaware.ImageAware
* image aware view} if some error occurs during
* requested image loading/decoding.
* This option will be ignored if {@link DisplayImageOptions.Builder#showImageOnFail(int)} is set.
*/
public Builder showImageOnFail(Drawable drawable) {
imageOnFail = drawable;
return this;
}
/**
* {@link com.nostra13.universalimageloader.core.imageaware.ImageAware
* image aware view} will be reset (set null) before image loading start
*
* @deprecated Use {@link #resetViewBeforeLoading(boolean) resetViewBeforeLoading(true)} instead
*/
public Builder resetViewBeforeLoading() {
resetViewBeforeLoading = true;
return this;
}
/**
* Sets whether {@link com.nostra13.universalimageloader.core.imageaware.ImageAware
* image aware view} will be reset (set null) before image loading start
*/
public Builder resetViewBeforeLoading(boolean resetViewBeforeLoading) {
this.resetViewBeforeLoading = resetViewBeforeLoading;
return this;
}
/**
* Loaded image will be cached in memory
*
* @deprecated Use {@link #cacheInMemory(boolean) cacheInMemory(true)} instead
*/
public Builder cacheInMemory() {
cacheInMemory = true;
return this;
}
/** Sets whether loaded image will be cached in memory */
public Builder cacheInMemory(boolean cacheInMemory) {
this.cacheInMemory = cacheInMemory;
return this;
}
/**
* Loaded image will be cached on disc
*
* @deprecated Use {@link #cacheOnDisc(boolean) cacheOnDisc(true)} instead
*/
public Builder cacheOnDisc() {
cacheOnDisc = true;
return this;
}
/** Sets whether loaded image will be cached on disc */
public Builder cacheOnDisc(boolean cacheOnDisc) {
this.cacheOnDisc = cacheOnDisc;
return this;
}
/**
* Sets {@linkplain ImageScaleType scale type} for decoding image. This parameter is used while define scale
* size for decoding image to Bitmap. Default value - {@link ImageScaleType#IN_SAMPLE_POWER_OF_2}
*/
public Builder imageScaleType(ImageScaleType imageScaleType) {
this.imageScaleType = imageScaleType;
return this;
}
/** Sets {@link Bitmap.Config bitmap config} for image decoding. Default value - {@link Bitmap.Config#ARGB_8888} */
public Builder bitmapConfig(Bitmap.Config bitmapConfig) {
if (bitmapConfig == null) throw new IllegalArgumentException("bitmapConfig can't be null");
decodingOptions.inPreferredConfig = bitmapConfig;
return this;
}
/**
* Sets options for image decoding.
* NOTE: {@link Options#inSampleSize} of incoming options will NOT be considered. Library
* calculate the most appropriate sample size itself according yo {@link #imageScaleType(ImageScaleType)}
* options.
* NOTE: This option overlaps {@link #bitmapConfig(android.graphics.Bitmap.Config) bitmapConfig()}
* option.
*/
public Builder decodingOptions(Options decodingOptions) {
if (decodingOptions == null) throw new IllegalArgumentException("decodingOptions can't be null");
this.decodingOptions = decodingOptions;
return this;
}
/** Sets delay time before starting loading task. Default - no delay. */
public Builder delayBeforeLoading(int delayInMillis) {
this.delayBeforeLoading = delayInMillis;
return this;
}
/** Sets auxiliary object which will be passed to {@link ImageDownloader#getStream(String, Object)} */
public Builder extraForDownloader(Object extra) {
this.extraForDownloader = extra;
return this;
}
/** Sets whether ImageLoader will consider EXIF parameters of JPEG image (rotate, flip) */
public Builder considerExifParams(boolean considerExifParams) {
this.considerExifParams = considerExifParams;
return this;
}
/**
* Sets bitmap processor which will be process bitmaps before they will be cached in memory. So memory cache
* will contain bitmap processed by incoming preProcessor.
* Image will be pre-processed even if caching in memory is disabled.
*/
public Builder preProcessor(BitmapProcessor preProcessor) {
this.preProcessor = preProcessor;
return this;
}
/**
* Sets bitmap processor which will be process bitmaps before they will be displayed in
* {@link com.nostra13.universalimageloader.core.imageaware.ImageAware image aware view} but
* after they'll have been saved in memory cache.
*/
public Builder postProcessor(BitmapProcessor postProcessor) {
this.postProcessor = postProcessor;
return this;
}
/**
* Sets custom {@link BitmapDisplayer displayer} for image loading task. Default value -
* {@link DefaultConfigurationFactory#createBitmapDisplayer()}
*/
public Builder displayer(BitmapDisplayer displayer) {
if (displayer == null) throw new IllegalArgumentException("displayer can't be null");
this.displayer = displayer;
return this;
}
Builder syncLoading(boolean isSyncLoading) {
this.isSyncLoading = isSyncLoading;
return this;
}
/**
* Sets custom {@linkplain Handler handler} for displaying images and firing {@linkplain ImageLoadingListener
* listener} events.
*/
public Builder handler(Handler handler) {
this.handler = handler;
return this;
}
/** Sets all options equal to incoming options */
public Builder cloneFrom(DisplayImageOptions options) {
imageResOnLoading = options.imageResOnLoading;
imageResForEmptyUri = options.imageResForEmptyUri;
imageResOnFail = options.imageResOnFail;
imageOnLoading = options.imageOnLoading;
imageForEmptyUri = options.imageForEmptyUri;
imageOnFail = options.imageOnFail;
resetViewBeforeLoading = options.resetViewBeforeLoading;
cacheInMemory = options.cacheInMemory;
cacheOnDisc = options.cacheOnDisc;
imageScaleType = options.imageScaleType;
decodingOptions = options.decodingOptions;
delayBeforeLoading = options.delayBeforeLoading;
considerExifParams = options.considerExifParams;
extraForDownloader = options.extraForDownloader;
preProcessor = options.preProcessor;
postProcessor = options.postProcessor;
displayer = options.displayer;
handler = options.handler;
isSyncLoading = options.isSyncLoading;
return this;
}
/** Builds configured {@link DisplayImageOptions} object */
public DisplayImageOptions build() {
return new DisplayImageOptions(this);
}
}
/**
* Creates options appropriate for single displaying:
*
* - View will not be reset before loading
* - Loaded image will not be cached in memory
* - Loaded image will not be cached on disc
* - {@link ImageScaleType#IN_SAMPLE_POWER_OF_2} decoding type will be used
* - {@link Bitmap.Config#ARGB_8888} bitmap config will be used for image decoding
* - {@link SimpleBitmapDisplayer} will be used for image displaying
*
*
* These option are appropriate for simple single-use image (from drawables or from Internet) displaying.
*/
public static DisplayImageOptions createSimple() {
return new Builder().build();
}
}