封装Picasso加载图片指定大小 旋转 高斯模糊

package com.liulishuo.qiniuimageloader.demo; import android.content.Context; import android.text.TextUtils; import android.util.Log; import android.widget.ImageView; import java.util.ArrayList; import java.util.List; import javax.microedition.khronos.opengles.GL10; /** * Copyright (c) 2015 LingoChamp 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. * * Created by Jacksgong on 15/8/3. * * @Api: http://developer.qiniu.com/docs/v6/api/reference/fop/image/imageview2.html */ public class JockImageLoader<T extends JockImageLoader> { private final static String TAG = "QiniuImageLoader"; private int mode = MODE_FIT_XY; private int w = 0; private int h = 0; private String oriUrl; private ImageView imageView; /** * 限定缩略图的宽最少为<Width>，高最少为<Height>，进行等比缩放，居中裁剪。 * <p/> * 转后的缩略图通常恰好是 <Width>x<Height> 的大小（有一个边缩放的时候会因为超出矩形框而被裁剪掉多余部分）。 * <p/> * 如果只指定 w 参数或只指定 h 参数，代表限定为长宽相等的正方图。 * <p/> * 强制使用给定w与h */ private final static int MODE_CENTER_CROP = 1; /** * 限定缩略图的宽最多为<Width>，高最多为<Height>，进行等比缩放，不裁剪。 * <p/> * 如果只指定 w 参数则表示限定宽（长自适应），只指定 h 参数则表示限定长（宽自适应）。 * <p/> * 如果给定的w或h大于原图，则采用原图 */ private final static int MODE_FIT_XY = 2; /** * 强制需要原图，通常是图片需要动态缩放才需要 */ private final static int MODE_FORCE_ORIGIN = -1; public JockImageLoader(final Context context, final String oriUrl) { this.context = context; this.oriUrl = oriUrl; } public JockImageLoader(final ImageView imageView, final String oriUrl) { this.imageView = imageView; this.oriUrl = oriUrl; } /** * 指定最大宽度 为w * * @param w * @return */ public T w(final int w) { this.w = w; return (T) this; } /** * 指定最大宽度 * * @param wResource DimenRes * @return */ public T wR(final int wResource) { if (getContext() == null) { return (T) this; } this.w = getContext().getResources().getDimensionPixelSize(wResource); return (T) this; } /** * 指定最大宽高 * * @param size * @return */ public T size(final int size) { w(size); h(size); return (T) this; } /** * 指定最大宽高 * * @param sizeResource DimenRes * @return */ public T sizeR(final int sizeResource) { if (getContext() == null) { return (T) this; } final int size = getContext().getResources().getDimensionPixelSize(sizeResource); size(size); return (T) this; } /** * 指定最大高度 * * @param h * @return */ public T h(final int h) { this.h = h; return (T) this; } /** * 指定最大高度 * * @param hResource DimenRes * @return */ public T hR(final int hResource) { if (getContext() == null) { return (T) this; } this.h = getContext().getResources().getDimensionPixelSize(hResource); return (T) this; } /** * 指定模式为mode * * @param mode * @return */ public T mode(final int mode) { this.mode = mode; return (T) this; } /** * {@link #mode} to {@link #MODE_FIT_XY} * <p/> * 指定模式为FitXY * * @return * @see <url></url>https://github.com/lingochamp/QiniuImageLoader</url> */ public T fitXY() { return mode(MODE_FIT_XY); } /** * 指定模式为CenterCrop * * @return * @see <url>https://github.com/lingochamp/QiniuImageLoader</url> */ public T centerCrop() { return mode(MODE_CENTER_CROP); } /** * 请求图片最大宽高为GL10.GL_MAX_TEXTURE_SIZE * * @return * @see #MODE_FORCE_ORIGIN */ public T forceOrigin() { return mode(MODE_FORCE_ORIGIN); } /** * 根据七牛提供的API生成目标URL * * @return 目标URL * @see <url>http://developer.qiniu.com/docs/v6/api/reference/fop/image/imageview2.html</url> */ public String createQiniuUrl() { String u = this.oriUrl; if (!isUrl(u)) { return u; } int width = this.w; int height = this.h; final int maxWidth = getScreenWith(); final int maxHeight = getMaxHeight(); if (this.mode == MODE_FORCE_ORIGIN) { width = GL10.GL_MAX_TEXTURE_SIZE; height = GL10.GL_MAX_TEXTURE_SIZE; } else { // 其中一个有效 width = (height <= 0 && width > 0 && width > maxWidth) ? maxWidth : width; height = (width <= 0 && height > 0 && height > maxHeight) ? maxHeight : height; // 两个都无效 width = (width <= 0 && height <= 0) ? maxWidth : width; //两个都有效 if (width > 0 && height > 0) { if (width > maxWidth) { height = (int) (height * ((float) maxWidth / width)); width = maxWidth; } if (height > maxHeight) { width = (int) (width * ((float) maxHeight / height)); height = maxHeight; } } } // size /thumbnail/<width>x<height>[>最大宽高/<最小宽高] // /thumbnail/[!]<width>x<height>[r] 限定短边，生成不小于<width>x<height>的 默认不指定!与r，为限定长边 // %3E = URLEncoder.encoder(">", "utf-8") final String maxHeightUtf8 = "%3E"; String resizeParams = ""; if (width > 0 || height > 0) { if (width <= 0) { // h > 0 resizeParams = this.mode == MODE_FORCE_ORIGIN || this.mode == MODE_FIT_XY ? // fit xy String.format("/thumbnail/x%d%s", height, maxHeightUtf8) : // center crop String.format("/thumbnail/!%dx%dr/gravity/Center/crop/%dx%d", height, height, height, height); } else if (height <= 0) { // w > 0 resizeParams = this.mode == MODE_FORCE_ORIGIN || this.mode == MODE_FIT_XY ? // fit xy String.format("/thumbnail/%dx%s", width, maxHeightUtf8) : // center crop String.format("/thumbnail/!%dx%dr/gravity/Center/crop/%dx%d", width, width, width, width); } else { // h > 0 && w > 0 resizeParams = this.mode == MODE_FORCE_ORIGIN || this.mode == MODE_FIT_XY ? // fit xy String.format("/thumbnail/%dx%d%s", width, height, maxHeightUtf8) : // center crop String.format("/thumbnail/!%dx%dr/gravity/Center/crop/%dx%d", width, height, width, height); }