| /* |
| * Copyright (C) 2013 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.filtershow; |
| |
| import android.content.Context; |
| import android.graphics.Color; |
| import android.graphics.Point; |
| import android.util.AttributeSet; |
| import android.util.Log; |
| import android.view.MotionEvent; |
| import android.widget.LinearLayout; |
| |
| import com.android.gallery3d.R; |
| import com.android.gallery3d.filtershow.filters.FilterRepresentation; |
| import com.android.gallery3d.filtershow.imageshow.MasterImage; |
| |
| public class MovableLinearLayout extends LinearLayout { |
| |
| private Point mTouchDown = new Point(); |
| private FilterRepresentation mFilterRepresentation; |
| private int mTouchSlope = 3; |
| private static final String LOGTAG = "MovableLinearLayout"; |
| |
| public MovableLinearLayout(Context context, AttributeSet attrs) { |
| super(context, attrs); |
| } |
| |
| private void resetView() { |
| setTranslationX(0); |
| mTouchDown.x = 0; |
| mTouchDown.y = 0; |
| setAlpha(1.0f); |
| setBackgroundResource(R.drawable.filtershow_button_background); |
| } |
| |
| @Override |
| public boolean onTouchEvent(MotionEvent event) { |
| int ex = (int) event.getX(); |
| int ey = (int) event.getY(); |
| if (event.getAction() == MotionEvent.ACTION_DOWN) { |
| mTouchDown.x = ex; |
| mTouchDown.y = ey; |
| FilterShowActivity activity = (FilterShowActivity) getContext(); |
| activity.getPanelController().showComponentWithRepresentation(mFilterRepresentation); |
| } |
| if (event.getAction() == MotionEvent.ACTION_MOVE) { |
| int delta = ex - mTouchDown.x; |
| if (delta > 0 && (delta - getTranslationX()) > mTouchSlope) { |
| setTranslationX(delta); |
| float alpha = (getWidth() - getTranslationX()) / getWidth(); |
| int backgroundColor = Color.argb((int) (1.0f - alpha * 255), 255, 0, 0); |
| setBackgroundColor(backgroundColor); |
| setAlpha(alpha); |
| } |
| } |
| if (event.getAction() == MotionEvent.ACTION_UP |
| || event.getAction() == MotionEvent.ACTION_CANCEL) { |
| if (getTranslationX() > getWidth() / 4) { |
| delete(mFilterRepresentation); |
| } else { |
| resetView(); |
| } |
| } |
| return true; |
| } |
| |
| private void delete(FilterRepresentation filterRepresentation) { |
| FilterShowActivity activity = (FilterShowActivity) getContext(); |
| activity.getPanelController().removeFilterRepresentation(filterRepresentation); |
| } |
| |
| public void setFilterRepresentation(FilterRepresentation filterRepresentation) { |
| mFilterRepresentation = filterRepresentation; |
| resetView(); |
| } |
| |
| } |