/******************************************************************************* * 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; } } }