/* * Copyright (C) 2016 Cyanogen, Inc. * Copyright (C) 2016 The CyanogenMod 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 android.support.v4.view; import android.content.Context; import android.util.AttributeSet; import android.util.Log; import android.view.MotionEvent; import android.view.View; import android.view.ViewConfiguration; import org.cyanogenmod.theme.chooser2.R; public class ThemeViewPager extends ViewPager { private static final String TAG = ThemeViewPager.class.getSimpleName(); private boolean mExpanded; private boolean mIsAnimating; private boolean mIsDragging = false; private float mSlop; private float mLastX; private float mLastY; private boolean mScrollingEnabled = true; private boolean mClickedContent = false; public ThemeViewPager(Context context, AttributeSet attrs) { super(context, attrs); initView(context); } private void initView(Context context) { mSlop = ViewConfiguration.get(context).getScaledTouchSlop(); } public void setExpanded(boolean expanded) { mExpanded = expanded; } public void setAnimating(boolean isAnimating) { mIsAnimating = isAnimating; } public boolean isClickedOnContent() { return mClickedContent; } @Override public boolean onInterceptTouchEvent(MotionEvent ev) { boolean intercept = false; if (!mExpanded && isEnabled() && !mIsAnimating) { switch (ev.getAction()) { case MotionEvent.ACTION_DOWN: intercept = getChildCount() > 0 && !isTouching(R.id.overflow, ev) && !isTouching(R.id.confirm_cancel_overlay, ev) && !isTouching(R.id.customize_reset_theme_layout, ev); break; } } return intercept; } private boolean isTouching(int viewId, MotionEvent ev) { int x = (int) ev.getRawX(); int y = (int) ev.getRawY(); View v = getViewForPosition(getCurrentItem()); if (v == null) return false; View touchedView = v.findViewById(viewId); if (touchedView == null || touchedView.getVisibility() != View.VISIBLE || !touchedView.isEnabled()) { return false; } int location[] = new int[2]; touchedView.getLocationOnScreen(location); int viewX = location[0]; int viewY = location[1]; if((x > viewX && x < (viewX + touchedView.getWidth())) && ( y > viewY && y < (viewY + touchedView.getHeight()))){ return true; } else { return false; } } @Override public boolean onTouchEvent(MotionEvent ev) { switch (ev.getAction()) { case MotionEvent.ACTION_DOWN: mLastX = ev.getX(); mLastY = ev.getY(); break; case MotionEvent.ACTION_MOVE: float xDist = Math.abs(mLastX - ev.getX()); float yDist = Math.abs(mLastY - ev.getY()); if (xDist > mSlop || yDist > mSlop) { mIsDragging = true; } break; case MotionEvent.ACTION_CANCEL: mIsDragging = false; break; case MotionEvent.ACTION_UP: if (!mIsDragging) { mClickedContent = isTouching(R.id.clickable_view, ev); View clickableView = getViewForPosition(getCurrentItem(), R.id.clickable_view); if (clickableView != null) { // only play the click sound when we click on the content :) setSoundEffectsEnabled(mClickedContent && clickableView.isSoundEffectsEnabled()); } performClick(); } mIsDragging = false; break; } if (mExpanded || (!mScrollingEnabled && mIsDragging)) { return false; } /** * Work around AOSP issue #18990 * https://code.google.com/p/android/issues/detail?id=18990 */ try { return super.onTouchEvent(ev); } catch (IllegalArgumentException e) { Log.w(TAG, "Failed while calling super.onTouchEvent()", e); } return false; } /** * This method will return the view associated with a given position. This is neccessary * because the index value in 'getChildAt(index)' does not neccessarily associate with * the viewpager's position. * */ public View getViewForPosition(int position) { View view = null; for(int i=0; i < getChildCount(); i++) { View v = getChildAt(i); ItemInfo info = infoForChild(v); if (info != null && position == info.position) { view = v; break; } } return view; } /** * Like getViewForPosition(int position), but will return a specific child view with * id viewId. */ public View getViewForPosition(int position, int id) { View parent = getViewForPosition(position); if (parent != null) { return parent.findViewById(id); } return null; } public void setScrollingEnabled(boolean enabled) { mScrollingEnabled = enabled; } }