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/*
* Copyright (C) 2011 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.inputmethod.keyboard;
import com.android.inputmethod.latin.R;
import android.content.Context;
import android.content.res.Resources;
import android.os.SystemClock;
import android.util.AttributeSet;
import android.view.Gravity;
import android.view.MotionEvent;
import android.view.View;
import android.widget.PopupWindow;
/**
* A view that renders a virtual {@link MiniKeyboard}. It handles rendering of keys and detecting
* key presses and touch movements.
*/
public class PopupMiniKeyboardView extends KeyboardView implements PopupPanel {
private final int[] mCoordinates = new int[2];
private final boolean mConfigShowMiniKeyboardAtTouchedPoint;
private int mOriginX;
private int mOriginY;
private int mTrackerId;
private long mDownTime;
public PopupMiniKeyboardView(Context context, AttributeSet attrs) {
this(context, attrs, R.attr.keyboardViewStyle);
}
public PopupMiniKeyboardView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
final Resources res = context.getResources();
mConfigShowMiniKeyboardAtTouchedPoint = res.getBoolean(
R.bool.config_show_mini_keyboard_at_touched_point);
// Override default ProximityKeyDetector.
mKeyDetector = new MiniKeyboardKeyDetector(res.getDimension(
R.dimen.mini_keyboard_slide_allowance));
// Remove gesture detector on mini-keyboard
mGestureDetector = null;
setKeyPreviewPopupEnabled(false, 0);
}
@Override
public void setKeyPreviewPopupEnabled(boolean previewEnabled, int delay) {
// Mini keyboard needs no pop-up key preview displayed, so we pass always false with a
// delay of 0. The delay does not matter actually since the popup is not shown anyway.
super.setKeyPreviewPopupEnabled(false, 0);
}
@Override
public void showPanel(KeyboardView parentKeyboardView, Key parentKey,
PointerTracker tracker, int keyPreviewY, PopupWindow window) {
final View container = (View)getParent();
final MiniKeyboard miniKeyboard = (MiniKeyboard)getKeyboard();
final Keyboard parentKeyboard = parentKeyboardView.getKeyboard();
parentKeyboardView.getLocationInWindow(mCoordinates);
final int pointX = (mConfigShowMiniKeyboardAtTouchedPoint) ? tracker.getLastX()
: parentKey.mX + parentKey.mWidth / 2;
final int pointY = parentKey.mY;
final int miniKeyboardX = pointX - miniKeyboard.getDefaultCoordX()
- container.getPaddingLeft()
+ parentKeyboardView.getPaddingLeft() + mCoordinates[0];
final int miniKeyboardY = pointY - parentKeyboard.getVerticalGap()
- (container.getMeasuredHeight() - container.getPaddingBottom())
+ parentKeyboardView.getPaddingTop() + mCoordinates[1];
final int x = miniKeyboardX;
final int y = parentKeyboardView.isKeyPreviewPopupEnabled() &&
miniKeyboard.isOneRowKeyboard() ? keyPreviewY : miniKeyboardY;
if (miniKeyboard.setShifted(parentKeyboard.isShiftedOrShiftLocked())) {
invalidateAllKeys();
}
window.setContentView(container);
window.setWidth(container.getMeasuredWidth());
window.setHeight(container.getMeasuredHeight());
window.showAtLocation(parentKeyboardView, Gravity.NO_GRAVITY, x, y);
mOriginX = x + container.getPaddingLeft() - mCoordinates[0];
mOriginY = y + container.getPaddingTop() - mCoordinates[1];
mTrackerId = tracker.mPointerId;
mDownTime = SystemClock.uptimeMillis();
// Inject down event on the key to mini keyboard.
final MotionEvent downEvent = translateMotionEvent(MotionEvent.ACTION_DOWN, pointX,
pointY + parentKey.mHeight / 2, mDownTime);
onTouchEvent(downEvent);
downEvent.recycle();
}
private MotionEvent translateMotionEvent(int action, float x, float y, long eventTime) {
return MotionEvent.obtain(mDownTime, eventTime, action, x - mOriginX, y - mOriginY, 0);
}
@Override
public boolean onTouchEvent(MotionEvent me) {
final int index = me.getActionIndex();
final int id = me.getPointerId(index);
if (id == mTrackerId) {
final MotionEvent translated = translateMotionEvent(me.getAction(), me.getX(index),
me.getY(index), me.getEventTime());
super.onTouchEvent(translated);
translated.recycle();
}
return true;
}
}
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