| package org.wordpress.android.util.helpers; |
| |
| import android.graphics.Canvas; |
| import android.graphics.drawable.BitmapDrawable; |
| import android.graphics.drawable.Drawable; |
| import android.text.Html; |
| import android.text.TextUtils; |
| import android.widget.TextView; |
| |
| import com.android.volley.VolleyError; |
| import com.android.volley.toolbox.ImageLoader; |
| |
| import org.wordpress.android.util.AppLog; |
| import org.wordpress.android.util.AppLog.T; |
| import org.wordpress.android.util.PhotonUtils; |
| |
| import java.lang.ref.WeakReference; |
| |
| /** |
| * ImageGetter for Html.fromHtml() |
| * adapted from existing ImageGetter code in NoteCommentFragment |
| */ |
| public class WPImageGetter implements Html.ImageGetter { |
| private final WeakReference<TextView> mWeakView; |
| private final int mMaxSize; |
| private ImageLoader mImageLoader; |
| private Drawable mLoadingDrawable; |
| private Drawable mFailedDrawable; |
| |
| public WPImageGetter(TextView view) { |
| this(view, 0); |
| } |
| |
| public WPImageGetter(TextView view, int maxSize) { |
| mWeakView = new WeakReference<TextView>(view); |
| mMaxSize = maxSize; |
| } |
| |
| public WPImageGetter(TextView view, int maxSize, ImageLoader imageLoader, Drawable loadingDrawable, |
| Drawable failedDrawable) { |
| mWeakView = new WeakReference<TextView>(view); |
| mMaxSize = maxSize; |
| mImageLoader = imageLoader; |
| mLoadingDrawable = loadingDrawable; |
| mFailedDrawable = failedDrawable; |
| } |
| |
| private TextView getView() { |
| return mWeakView.get(); |
| } |
| |
| @Override |
| public Drawable getDrawable(String source) { |
| if (mImageLoader == null || mLoadingDrawable == null || mFailedDrawable == null) { |
| throw new RuntimeException("Developer, you need to call setImageLoader, setLoadingDrawable and setFailedDrawable"); |
| } |
| |
| if (TextUtils.isEmpty(source)) { |
| return null; |
| } |
| |
| // images in reader comments may skip "http:" (no idea why) so make sure to add protocol here |
| if (source.startsWith("//")) { |
| source = "http:" + source; |
| } |
| |
| // use Photon if a max size is requested (otherwise the full-sized image will be downloaded |
| // and then resized) |
| if (mMaxSize > 0) { |
| source = PhotonUtils.getPhotonImageUrl(source, mMaxSize, 0); |
| } |
| |
| final RemoteDrawable remote = new RemoteDrawable(mLoadingDrawable, mFailedDrawable); |
| |
| mImageLoader.get(source, new ImageLoader.ImageListener() { |
| @Override |
| public void onErrorResponse(VolleyError error) { |
| remote.displayFailed(); |
| TextView view = getView(); |
| if (view != null) { |
| view.invalidate(); |
| } |
| } |
| |
| @Override |
| public void onResponse(ImageLoader.ImageContainer response, boolean isImmediate) { |
| if (response.getBitmap() == null) { |
| AppLog.w(T.UTILS, "WPImageGetter null bitmap"); |
| } |
| |
| TextView view = getView(); |
| if (view == null) { |
| AppLog.w(T.UTILS, "WPImageGetter view is invalid"); |
| return; |
| } |
| |
| int maxWidth = view.getWidth() - view.getPaddingLeft() - view.getPaddingRight(); |
| if (mMaxSize > 0 && (maxWidth > mMaxSize || maxWidth == 0)) { |
| maxWidth = mMaxSize; |
| } |
| |
| Drawable drawable = new BitmapDrawable(view.getContext().getResources(), response.getBitmap()); |
| remote.setRemoteDrawable(drawable, maxWidth); |
| |
| // force textView to resize correctly if image isn't cached by resetting the content |
| // to itself - this way the textView will use the cached image, and resizing to |
| // accommodate the image isn't necessary |
| if (!isImmediate) { |
| view.setText(view.getText()); |
| } |
| } |
| }); |
| |
| return remote; |
| } |
| |
| public static class RemoteDrawable extends BitmapDrawable { |
| Drawable mRemoteDrawable; |
| final Drawable mLoadingDrawable; |
| final Drawable mFailedDrawable; |
| private boolean mDidFail = false; |
| |
| public RemoteDrawable(Drawable loadingDrawable, Drawable failedDrawable) { |
| mLoadingDrawable = loadingDrawable; |
| mFailedDrawable = failedDrawable; |
| setBounds(0, 0, mLoadingDrawable.getIntrinsicWidth(), mLoadingDrawable.getIntrinsicHeight()); |
| } |
| |
| public void displayFailed() { |
| mDidFail = true; |
| } |
| |
| public void setBounds(int x, int y, int width, int height) { |
| super.setBounds(x, y, width, height); |
| if (mRemoteDrawable != null) { |
| mRemoteDrawable.setBounds(x, y, width, height); |
| return; |
| } |
| if (mLoadingDrawable != null) { |
| mLoadingDrawable.setBounds(x, y, width, height); |
| mFailedDrawable.setBounds(x, y, width, height); |
| } |
| } |
| |
| public void setRemoteDrawable(Drawable remote, int maxWidth) { |
| // null sentinel for now |
| if (remote == null) { |
| // throw error |
| return; |
| } |
| mRemoteDrawable = remote; |
| // determine if we need to scale the image to fit in view |
| int imgWidth = remote.getIntrinsicWidth(); |
| int imgHeight = remote.getIntrinsicHeight(); |
| float xScale = (float) imgWidth / (float) maxWidth; |
| if (xScale > 1.0f) { |
| setBounds(0, 0, Math.round(imgWidth / xScale), Math.round(imgHeight / xScale)); |
| } else { |
| setBounds(0, 0, imgWidth, imgHeight); |
| } |
| } |
| |
| public boolean didFail() { |
| return mDidFail; |
| } |
| |
| public void draw(Canvas canvas) { |
| if (mRemoteDrawable != null) { |
| mRemoteDrawable.draw(canvas); |
| } else if (didFail()) { |
| mFailedDrawable.draw(canvas); |
| } else { |
| mLoadingDrawable.draw(canvas); |
| } |
| } |
| } |
| } |