Refactor KeyboardView and create MiniKeyboardView

Change-Id: I8d68b944762ccde05020978f20b3742eb6ab945b

1 files changed, 124 insertions, 0 deletions

diff --git a/java/src/com/android/inputmethod/keyboard/PopupMiniKeyboardView.java b/java/src/com/android/inputmethod/keyboard/PopupMiniKeyboardView.java
new file mode 100644
index 000000000..12031f1ea
--- /dev/null
+++ b/java/src/com/android/inputmethod/keyboard/PopupMiniKeyboardView.java
@@ -0,0 +1,124 @@
+/*
+ * 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;
+        setKeyPreviewEnabled(false);
+    }
+
+    @Override
+    public void setKeyPreviewEnabled(boolean previewEnabled) {
+        // Mini keyboard needs no pop-up key preview displayed.
+        super.setKeyPreviewEnabled(false);
+    }
+
+    @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.isKeyPreviewEnabled() && 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;
+    }
+}