diff options
Diffstat (limited to 'src/com/android/gallery3d/ui/ScrollerHelper.java')
-rw-r--r-- | src/com/android/gallery3d/ui/ScrollerHelper.java | 97 |
1 files changed, 0 insertions, 97 deletions
diff --git a/src/com/android/gallery3d/ui/ScrollerHelper.java b/src/com/android/gallery3d/ui/ScrollerHelper.java deleted file mode 100644 index aa68d19d9..000000000 --- a/src/com/android/gallery3d/ui/ScrollerHelper.java +++ /dev/null @@ -1,97 +0,0 @@ -/* - * Copyright (C) 2010 The Android Open Source Project - * - * 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.android.gallery3d.ui; - -import android.content.Context; -import android.view.ViewConfiguration; - -import com.android.gallery3d.common.OverScroller; -import com.android.gallery3d.common.Utils; - -public class ScrollerHelper { - private OverScroller mScroller; - private int mOverflingDistance; - private boolean mOverflingEnabled; - - public ScrollerHelper(Context context) { - mScroller = new OverScroller(context); - ViewConfiguration configuration = ViewConfiguration.get(context); - mOverflingDistance = configuration.getScaledOverflingDistance(); - } - - public void setOverfling(boolean enabled) { - mOverflingEnabled = enabled; - } - - /** - * Call this when you want to know the new location. The position will be - * updated and can be obtained by getPosition(). Returns true if the - * animation is not yet finished. - */ - public boolean advanceAnimation(long currentTimeMillis) { - return mScroller.computeScrollOffset(); - } - - public boolean isFinished() { - return mScroller.isFinished(); - } - - public void forceFinished() { - mScroller.forceFinished(true); - } - - public int getPosition() { - return mScroller.getCurrX(); - } - - public float getCurrVelocity() { - return mScroller.getCurrVelocity(); - } - - public void setPosition(int position) { - mScroller.startScroll( - position, 0, // startX, startY - 0, 0, 0); // dx, dy, duration - - // This forces the scroller to reach the final position. - mScroller.abortAnimation(); - } - - public void fling(int velocity, int min, int max) { - int currX = getPosition(); - mScroller.fling( - currX, 0, // startX, startY - velocity, 0, // velocityX, velocityY - min, max, // minX, maxX - 0, 0, // minY, maxY - mOverflingEnabled ? mOverflingDistance : 0, 0); - } - - // Returns the distance that over the scroll limit. - public int startScroll(int distance, int min, int max) { - int currPosition = mScroller.getCurrX(); - int finalPosition = mScroller.isFinished() ? currPosition : - mScroller.getFinalX(); - int newPosition = Utils.clamp(finalPosition + distance, min, max); - if (newPosition != currPosition) { - mScroller.startScroll( - currPosition, 0, // startX, startY - newPosition - currPosition, 0, 0); // dx, dy, duration - } - return finalPosition + distance - newPosition; - } -} |