mobile/android/thirdparty/com/squareup/picasso/DeferredRequestCreator.java

changeset 0
6474c204b198
     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/mobile/android/thirdparty/com/squareup/picasso/DeferredRequestCreator.java	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,70 @@
     1.4 +/*
     1.5 + * Copyright (C) 2013 Square, Inc.
     1.6 + *
     1.7 + * Licensed under the Apache License, Version 2.0 (the "License");
     1.8 + * you may not use this file except in compliance with the License.
     1.9 + * You may obtain a copy of the License at
    1.10 + *
    1.11 + *      http://www.apache.org/licenses/LICENSE-2.0
    1.12 + *
    1.13 + * Unless required by applicable law or agreed to in writing, software
    1.14 + * distributed under the License is distributed on an "AS IS" BASIS,
    1.15 + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    1.16 + * See the License for the specific language governing permissions and
    1.17 + * limitations under the License.
    1.18 + */
    1.19 +package com.squareup.picasso;
    1.20 +
    1.21 +import android.view.ViewTreeObserver;
    1.22 +import android.widget.ImageView;
    1.23 +import java.lang.ref.WeakReference;
    1.24 +
    1.25 +class DeferredRequestCreator implements ViewTreeObserver.OnPreDrawListener {
    1.26 +
    1.27 +  final RequestCreator creator;
    1.28 +  final WeakReference<ImageView> target;
    1.29 +  Callback callback;
    1.30 +
    1.31 +  DeferredRequestCreator(RequestCreator creator, ImageView target, Callback callback) {
    1.32 +    this.creator = creator;
    1.33 +    this.target = new WeakReference<ImageView>(target);
    1.34 +    this.callback = callback;
    1.35 +    target.getViewTreeObserver().addOnPreDrawListener(this);
    1.36 +  }
    1.37 +
    1.38 +  @Override public boolean onPreDraw() {
    1.39 +    ImageView target = this.target.get();
    1.40 +    if (target == null) {
    1.41 +      return true;
    1.42 +    }
    1.43 +    ViewTreeObserver vto = target.getViewTreeObserver();
    1.44 +    if (!vto.isAlive()) {
    1.45 +      return true;
    1.46 +    }
    1.47 +
    1.48 +    int width = target.getMeasuredWidth();
    1.49 +    int height = target.getMeasuredHeight();
    1.50 +
    1.51 +    if (width <= 0 || height <= 0) {
    1.52 +      return true;
    1.53 +    }
    1.54 +
    1.55 +    vto.removeOnPreDrawListener(this);
    1.56 +
    1.57 +    this.creator.unfit().resize(width, height).into(target, callback);
    1.58 +    return true;
    1.59 +  }
    1.60 +
    1.61 +  void cancel() {
    1.62 +    callback = null;
    1.63 +    ImageView target = this.target.get();
    1.64 +    if (target == null) {
    1.65 +      return;
    1.66 +    }
    1.67 +    ViewTreeObserver vto = target.getViewTreeObserver();
    1.68 +    if (!vto.isAlive()) {
    1.69 +      return;
    1.70 +    }
    1.71 +    vto.removeOnPreDrawListener(this);
    1.72 +  }
    1.73 +}

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