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| 1 | +package org.wordpress.android.util; |
| 2 | + |
| 3 | +import android.graphics.Canvas; |
| 4 | +import android.graphics.drawable.BitmapDrawable; |
| 5 | +import android.graphics.drawable.Drawable; |
| 6 | +import android.text.Html; |
| 7 | +import android.text.TextUtils; |
| 8 | +import android.widget.TextView; |
| 9 | + |
| 10 | +import com.android.volley.VolleyError; |
| 11 | +import com.android.volley.toolbox.ImageLoader; |
| 12 | + |
| 13 | +import org.wordpress.android.util.AppLog.T; |
| 14 | + |
| 15 | +import java.lang.ref.WeakReference; |
| 16 | + |
| 17 | +/** |
| 18 | + * ImageGetter for Html.fromHtml() |
| 19 | + * adapted from existing ImageGetter code in NoteCommentFragment |
| 20 | + */ |
| 21 | +public class WPImageGetter implements Html.ImageGetter { |
| 22 | + private WeakReference<TextView> mWeakView; |
| 23 | + private int mMaxSize; |
| 24 | + private ImageLoader mImageLoader; |
| 25 | + private Drawable mLoadingDrawable; |
| 26 | + private Drawable mFailedDrawable; |
| 27 | + |
| 28 | + public WPImageGetter(TextView view) { |
| 29 | + this(view, 0); |
| 30 | + } |
| 31 | + |
| 32 | + public WPImageGetter(TextView view, int maxSize) { |
| 33 | + mWeakView = new WeakReference<TextView>(view); |
| 34 | + mMaxSize = maxSize; |
| 35 | + } |
| 36 | + |
| 37 | + public WPImageGetter(TextView view, int maxSize, ImageLoader imageLoader, Drawable loadingDrawable, |
| 38 | + Drawable failedDrawable) { |
| 39 | + mWeakView = new WeakReference<TextView>(view); |
| 40 | + mMaxSize = maxSize; |
| 41 | + mImageLoader = imageLoader; |
| 42 | + mLoadingDrawable = loadingDrawable; |
| 43 | + mFailedDrawable = failedDrawable; |
| 44 | + } |
| 45 | + |
| 46 | + public void setImageLoader(ImageLoader imageLoader) { |
| 47 | + mImageLoader = imageLoader; |
| 48 | + } |
| 49 | + |
| 50 | + public void setLoadingDrawable(Drawable loadingDrawable) { |
| 51 | + mLoadingDrawable = loadingDrawable; |
| 52 | + } |
| 53 | + |
| 54 | + public void setFailedDrawable(Drawable failedDrawable) { |
| 55 | + mFailedDrawable = failedDrawable; |
| 56 | + } |
| 57 | + |
| 58 | + private TextView getView() { |
| 59 | + return mWeakView.get(); |
| 60 | + } |
| 61 | + |
| 62 | + @Override |
| 63 | + public Drawable getDrawable(String source) { |
| 64 | + if (mImageLoader == null || mLoadingDrawable == null || mFailedDrawable == null) { |
| 65 | + throw new RuntimeException("Developer, you need to call setImageLoader, setLoadingDrawable and setFailedDrawable"); |
| 66 | + } |
| 67 | + |
| 68 | + if (TextUtils.isEmpty(source)) { |
| 69 | + return null; |
| 70 | + } |
| 71 | + |
| 72 | + // images in reader comments may skip "http:" (no idea why) so make sure to add protocol here |
| 73 | + if (source.startsWith("//")) { |
| 74 | + source = "http:" + source; |
| 75 | + } |
| 76 | + |
| 77 | + // use Photon if a max size is requested (otherwise the full-sized image will be downloaded |
| 78 | + // and then resized) |
| 79 | + if (mMaxSize > 0) { |
| 80 | + source = PhotonUtils.getPhotonImageUrl(source, mMaxSize, 0); |
| 81 | + } |
| 82 | + |
| 83 | + TextView view = getView(); |
| 84 | + // Drawable loading = view.getContext().getResources().getDrawable(R.drawable.remote_image); FIXME: here |
| 85 | + // Drawable failed = view.getContext().getResources().getDrawable(R.drawable.remote_failed); |
| 86 | + final RemoteDrawable remote = new RemoteDrawable(mLoadingDrawable, mFailedDrawable); |
| 87 | + |
| 88 | + mImageLoader.get(source, new ImageLoader.ImageListener() { |
| 89 | + @Override |
| 90 | + public void onErrorResponse(VolleyError error) { |
| 91 | + remote.displayFailed(); |
| 92 | + TextView view = getView(); |
| 93 | + if (view != null) { |
| 94 | + view.invalidate(); |
| 95 | + } |
| 96 | + } |
| 97 | + |
| 98 | + @Override |
| 99 | + public void onResponse(ImageLoader.ImageContainer response, boolean isImmediate) { |
| 100 | + if (response.getBitmap() != null) { |
| 101 | + // make sure view is still valid |
| 102 | + TextView view = getView(); |
| 103 | + if (view == null) { |
| 104 | + AppLog.w(T.UTILS, "WPImageGetter view is invalid"); |
| 105 | + return; |
| 106 | + } |
| 107 | + |
| 108 | + Drawable drawable = new BitmapDrawable(view.getContext().getResources(), response.getBitmap()); |
| 109 | + final int oldHeight = remote.getBounds().height(); |
| 110 | + int maxWidth = view.getWidth() - view.getPaddingLeft() - view.getPaddingRight(); |
| 111 | + if (mMaxSize > 0 && (maxWidth > mMaxSize || maxWidth == 0)) { |
| 112 | + maxWidth = mMaxSize; |
| 113 | + } |
| 114 | + remote.setRemoteDrawable(drawable, maxWidth); |
| 115 | + |
| 116 | + // image is from cache? don't need to modify view height |
| 117 | + if (isImmediate) { |
| 118 | + return; |
| 119 | + } |
| 120 | + |
| 121 | + int newHeight = remote.getBounds().height(); |
| 122 | + view.invalidate(); |
| 123 | + // For ICS |
| 124 | + view.setHeight(view.getHeight() + newHeight - oldHeight); |
| 125 | + // Pre ICS |
| 126 | + view.setEllipsize(null); |
| 127 | + } |
| 128 | + } |
| 129 | + }); |
| 130 | + return remote; |
| 131 | + } |
| 132 | + |
| 133 | + private static class RemoteDrawable extends BitmapDrawable { |
| 134 | + protected Drawable mRemoteDrawable; |
| 135 | + protected Drawable mLoadingDrawable; |
| 136 | + protected Drawable mFailedDrawable; |
| 137 | + private boolean mDidFail = false; |
| 138 | + |
| 139 | + public RemoteDrawable(Drawable loadingDrawable, Drawable failedDrawable) { |
| 140 | + mLoadingDrawable = loadingDrawable; |
| 141 | + mFailedDrawable = failedDrawable; |
| 142 | + setBounds(0, 0, mLoadingDrawable.getIntrinsicWidth(), mLoadingDrawable.getIntrinsicHeight()); |
| 143 | + } |
| 144 | + |
| 145 | + public void displayFailed() { |
| 146 | + mDidFail = true; |
| 147 | + } |
| 148 | + |
| 149 | + public void setBounds(int x, int y, int width, int height) { |
| 150 | + super.setBounds(x, y, width, height); |
| 151 | + if (mRemoteDrawable != null) { |
| 152 | + mRemoteDrawable.setBounds(x, y, width, height); |
| 153 | + return; |
| 154 | + } |
| 155 | + if (mLoadingDrawable != null) { |
| 156 | + mLoadingDrawable.setBounds(x, y, width, height); |
| 157 | + mFailedDrawable.setBounds(x, y, width, height); |
| 158 | + } |
| 159 | + } |
| 160 | + |
| 161 | + public void setRemoteDrawable(Drawable remote) { |
| 162 | + mRemoteDrawable = remote; |
| 163 | + setBounds(0, 0, mRemoteDrawable.getIntrinsicWidth(), mRemoteDrawable.getIntrinsicHeight()); |
| 164 | + } |
| 165 | + |
| 166 | + public void setRemoteDrawable(Drawable remote, int maxWidth) { |
| 167 | + // null sentinel for now |
| 168 | + if (remote == null) { |
| 169 | + // throw error |
| 170 | + return; |
| 171 | + } |
| 172 | + mRemoteDrawable = remote; |
| 173 | + // determine if we need to scale the image to fit in view |
| 174 | + int imgWidth = remote.getIntrinsicWidth(); |
| 175 | + int imgHeight = remote.getIntrinsicHeight(); |
| 176 | + float xScale = (float) imgWidth / (float) maxWidth; |
| 177 | + if (xScale > 1.0f) { |
| 178 | + setBounds(0, 0, Math.round(imgWidth / xScale), Math.round(imgHeight / xScale)); |
| 179 | + } else { |
| 180 | + setBounds(0, 0, imgWidth, imgHeight); |
| 181 | + } |
| 182 | + } |
| 183 | + |
| 184 | + public boolean didFail() { |
| 185 | + return mDidFail; |
| 186 | + } |
| 187 | + |
| 188 | + public void draw(Canvas canvas) { |
| 189 | + if (mRemoteDrawable != null) { |
| 190 | + mRemoteDrawable.draw(canvas); |
| 191 | + } else if (didFail()) { |
| 192 | + mFailedDrawable.draw(canvas); |
| 193 | + } else { |
| 194 | + mLoadingDrawable.draw(canvas); |
| 195 | + } |
| 196 | + } |
| 197 | + } |
| 198 | +} |
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