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Diffstat (limited to 'src/com/android/calculator2/CalculatorPadViewPager.java')
-rw-r--r--src/com/android/calculator2/CalculatorPadViewPager.java252
1 files changed, 0 insertions, 252 deletions
diff --git a/src/com/android/calculator2/CalculatorPadViewPager.java b/src/com/android/calculator2/CalculatorPadViewPager.java
deleted file mode 100644
index 0f430b0..0000000
--- a/src/com/android/calculator2/CalculatorPadViewPager.java
+++ /dev/null
@@ -1,252 +0,0 @@
-/*
- * Copyright (C) 2015 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.calculator2;
-
-import android.content.Context;
-import android.graphics.Color;
-import androidx.viewpager.widget.PagerAdapter;
-import androidx.viewpager.widget.ViewPager;
-import android.util.AttributeSet;
-import android.util.Log;
-import android.view.GestureDetector;
-import android.view.MotionEvent;
-import android.view.View;
-import android.view.ViewGroup;
-
-public class CalculatorPadViewPager extends ViewPager {
-
- private final PagerAdapter mStaticPagerAdapter = new PagerAdapter() {
- @Override
- public int getCount() {
- return getChildCount();
- }
-
- @Override
- public View instantiateItem(ViewGroup container, final int position) {
- final View child = getChildAt(position);
-
- // Set a OnClickListener to scroll to item's position when it isn't the current item.
- child.setOnClickListener(new OnClickListener() {
- @Override
- public void onClick(View v) {
- setCurrentItem(position, true /* smoothScroll */);
- }
- });
- // Set an OnTouchListener to always return true for onTouch events so that a touch
- // sequence cannot pass through the item to the item below.
- child.setOnTouchListener(new OnTouchListener() {
- @Override
- public boolean onTouch(View v, MotionEvent event) {
- v.onTouchEvent(event);
- return true;
- }
- });
-
- // Set an OnHoverListener to always return true for onHover events so that focus cannot
- // pass through the item to the item below.
- child.setOnHoverListener(new OnHoverListener() {
- @Override
- public boolean onHover(View v, MotionEvent event) {
- v.onHoverEvent(event);
- return true;
- }
- });
- // Make the item focusable so it can be selected via a11y.
- child.setFocusable(true);
- // Set the content description of the item which will be used by a11y to identify it.
- child.setContentDescription(getPageTitle(position));
-
- return child;
- }
-
- @Override
- public void destroyItem(ViewGroup container, int position, Object object) {
- removeViewAt(position);
- }
-
- @Override
- public boolean isViewFromObject(View view, Object object) {
- return view == object;
- }
-
- @Override
- public float getPageWidth(int position) {
- return position == 1 ? 7.0f / 9.0f : 1.0f;
- }
-
- @Override
- public CharSequence getPageTitle(int position) {
- final String[] pageDescriptions = getContext().getResources()
- .getStringArray(R.array.desc_pad_pages);
- return pageDescriptions[position];
- }
- };
-
- private final OnPageChangeListener mOnPageChangeListener = new SimpleOnPageChangeListener() {
- @Override
- public void onPageSelected(int position) {
- for (int i = getChildCount() - 1; i >= 0; --i) {
- final View child = getChildAt(i);
- // Only the "peeking" or covered page should be clickable.
- child.setClickable(i != position);
-
- // Prevent clicks and accessibility focus from going through to descendants of
- // other pages which are covered by the current page.
- if (child instanceof ViewGroup) {
- final ViewGroup childViewGroup = (ViewGroup) child;
- for (int j = childViewGroup.getChildCount() - 1; j >= 0; --j) {
- childViewGroup.getChildAt(j)
- .setImportantForAccessibility(i == position
- ? IMPORTANT_FOR_ACCESSIBILITY_AUTO
- : IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS);
- }
- }
- }
- }
- };
-
- private final PageTransformer mPageTransformer = new PageTransformer() {
- @Override
- public void transformPage(View view, float position) {
- if (position < 0.0f) {
- // Pin the left page to the left side.
- view.setTranslationX(getWidth() * -position);
- view.setAlpha(Math.max(1.0f + position, 0.0f));
- } else {
- // Use the default slide transition when moving to the next page.
- view.setTranslationX(0.0f);
- view.setAlpha(1.0f);
- }
- }
- };
-
- private final GestureDetector.SimpleOnGestureListener mGestureWatcher =
- new GestureDetector.SimpleOnGestureListener() {
- @Override
- public boolean onDown(MotionEvent e) {
- // Return true so calls to onSingleTapUp are not blocked.
- return true;
- }
-
- @Override
- public boolean onSingleTapUp(MotionEvent ev) {
- if (mClickedItemIndex != -1) {
- getChildAt(mClickedItemIndex).performClick();
- mClickedItemIndex = -1;
- return true;
- }
- return super.onSingleTapUp(ev);
- }
- };
-
- private final GestureDetector mGestureDetector;
-
- private int mClickedItemIndex = -1;
-
- public CalculatorPadViewPager(Context context) {
- this(context, null /* attrs */);
- }
-
- public CalculatorPadViewPager(Context context, AttributeSet attrs) {
- super(context, attrs);
-
- mGestureDetector = new GestureDetector(context, mGestureWatcher);
- mGestureDetector.setIsLongpressEnabled(false);
-
- setAdapter(mStaticPagerAdapter);
- setBackgroundColor(Color.BLACK);
- setPageMargin(-getResources().getDimensionPixelSize(R.dimen.pad_page_margin));
- setPageTransformer(false, mPageTransformer);
- addOnPageChangeListener(mOnPageChangeListener);
- }
-
- @Override
- protected void onFinishInflate() {
- super.onFinishInflate();
-
- // Invalidate the adapter's data set since children may have been added during inflation.
- getAdapter().notifyDataSetChanged();
-
- // Let page change listener know about our initial position.
- mOnPageChangeListener.onPageSelected(getCurrentItem());
- }
-
- @Override
- public boolean onInterceptTouchEvent(MotionEvent ev) {
- try {
- // Always intercept touch events when a11y focused since otherwise they will be
- // incorrectly offset by a11y before being dispatched to children.
- if (isAccessibilityFocused() || super.onInterceptTouchEvent(ev)) {
- return true;
- }
-
- // Only allow the current item to receive touch events.
- final int action = ev.getActionMasked();
- if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_POINTER_DOWN) {
- // If a child is a11y focused then we must always intercept the touch event
- // since it will be incorrectly offset by a11y.
- final int childCount = getChildCount();
- for (int childIndex = childCount - 1; childIndex >= 0; --childIndex) {
- if (getChildAt(childIndex).isAccessibilityFocused()) {
- mClickedItemIndex = childIndex;
- return true;
- }
- }
-
- if (action == MotionEvent.ACTION_DOWN) {
- mClickedItemIndex = -1;
- }
-
- // Otherwise if touch is on a non-current item then intercept.
- final int actionIndex = ev.getActionIndex();
- final float x = ev.getX(actionIndex) + getScrollX();
- final float y = ev.getY(actionIndex) + getScrollY();
- for (int i = childCount - 1; i >= 0; --i) {
- final int childIndex = getChildDrawingOrder(childCount, i);
- final View child = getChildAt(childIndex);
- if (child.getVisibility() == VISIBLE
- && x >= child.getLeft() && x < child.getRight()
- && y >= child.getTop() && y < child.getBottom()) {
- if (action == MotionEvent.ACTION_DOWN) {
- mClickedItemIndex = childIndex;
- }
- return childIndex != getCurrentItem();
- }
- }
- }
-
- return false;
- } catch (IllegalArgumentException e) {
- Log.e("Calculator", "Error intercepting touch event", e);
- return false;
- }
- }
-
- @Override
- public boolean onTouchEvent(MotionEvent ev) {
- try {
- // Allow both the gesture detector and super to handle the touch event so they both see
- // the full sequence of events. This should be safe since the gesture detector only
- // handle clicks and super only handles swipes.
- mGestureDetector.onTouchEvent(ev);
- return super.onTouchEvent(ev);
- } catch (IllegalArgumentException e) {
- Log.e("Calculator", "Error processing touch event", e);
- return false;
- }
- }
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-10 04:05:39 +0000