/*******************************************************************************
* Copyright 2011, 2012 Chris Banes.
*
* 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.handmark.pulltorefresh.library.internal;
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.drawable.Drawable;
import android.view.View;
import android.view.ViewGroup;
import android.view.animation.Animation;
import android.view.animation.RotateAnimation;
import com.handmark.pulltorefresh.library.PullToRefreshBase;
import com.handmark.pulltorefresh.library.PullToRefreshBase.Mode;
import com.handmark.pulltorefresh.library.R;
public class FlipLoadingLayout extends LoadingLayout {
static final int FLIP_ANIMATION_DURATION = 150;
private final Animation mRotateAnimation, mResetRotateAnimation;
public FlipLoadingLayout(Context context, Mode mode, int scrollDirection, TypedArray attrs) {
super(context, mode, scrollDirection, attrs);
final int rotateAngle = mode == Mode.PULL_FROM_START ? -180 : 180;
mRotateAnimation = new RotateAnimation(0, rotateAngle, Animation.RELATIVE_TO_SELF, 0.5f,
Animation.RELATIVE_TO_SELF, 0.5f);
mRotateAnimation.setInterpolator(ANIMATION_INTERPOLATOR);
mRotateAnimation.setDuration(FLIP_ANIMATION_DURATION);
mRotateAnimation.setFillAfter(true);
mResetRotateAnimation = new RotateAnimation(rotateAngle, 0, Animation.RELATIVE_TO_SELF, 0.5f,
Animation.RELATIVE_TO_SELF, 0.5f);
mResetRotateAnimation.setInterpolator(ANIMATION_INTERPOLATOR);
mResetRotateAnimation.setDuration(FLIP_ANIMATION_DURATION);
mResetRotateAnimation.setFillAfter(true);
}
@Override
protected void onLoadingDrawableSet(Drawable imageDrawable) {
/**
* We need to set the width/height of the ImageView so that it is square
* with each side the size of the largest drawable dimension. This is so
* that it doesn't clip when rotated.
*/
if (null != imageDrawable) {
ViewGroup.LayoutParams lp = mHeaderImage.getLayoutParams();
lp.width = lp.height = Math.max(imageDrawable.getIntrinsicWidth(), imageDrawable.getIntrinsicHeight());
mHeaderImage.requestLayout();
}
}
@Override
protected void onPullImpl(float scaleOfLayout) {
// NO-OP
}
@Override
protected void pullToRefreshImpl() {
// Only start reset Animation, we've previously show the rotate anim
if (mRotateAnimation == mHeaderImage.getAnimation()) {
mHeaderImage.startAnimation(mResetRotateAnimation);
}
}
@Override
protected void refreshingImpl() {
mHeaderImage.clearAnimation();
mHeaderImage.setVisibility(View.INVISIBLE);
mHeaderProgress.setVisibility(View.VISIBLE);
}
@Override
protected void releaseToRefreshImpl() {
mHeaderImage.startAnimation(mRotateAnimation);
}
@Override
protected void resetImpl() {
mHeaderImage.clearAnimation();
mHeaderProgress.setVisibility(View.GONE);
mHeaderImage.setVisibility(View.VISIBLE);
}
@Override
protected int getDefaultStartDrawableResId(final int scrollDirection) {
switch (scrollDirection) {
case PullToRefreshBase.HORIZONTAL_SCROLL:
return R.drawable.default_ptr_flip_left;
case PullToRefreshBase.VERTICAL_SCROLL:
default:
return R.drawable.default_ptr_flip_top;
}
}
@Override
protected int getDefaultEndDrawableResId(final int scrollDirection) {
switch (scrollDirection) {
case PullToRefreshBase.HORIZONTAL_SCROLL:
return R.drawable.default_ptr_flip_right;
case PullToRefreshBase.VERTICAL_SCROLL:
default:
return R.drawable.default_ptr_flip_bottom;
}
}
}