70 lines
2.3 KiB
Java
70 lines
2.3 KiB
Java
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/*
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* Copyright (C) 2013 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.inputmethod.keyboard.internal;
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import android.content.res.TypedArray;
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import android.graphics.Canvas;
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import android.view.View;
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import com.android.inputmethod.keyboard.PointerTracker;
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import com.android.inputmethod.latin.CoordinateUtils;
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/**
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* Draw rubber band preview graphics during sliding key input.
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*/
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public final class SlidingKeyInputPreview extends AbstractDrawingPreview {
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private boolean mShowSlidingKeyInputPreview;
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private final int[] mRubberBandFrom = CoordinateUtils.newInstance();
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private final int[] mRubberBandTo = CoordinateUtils.newInstance();
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public SlidingKeyInputPreview(final View drawingView, final TypedArray mainKeyboardViewAttr) {
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super(drawingView);
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}
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public void dismissSlidingKeyInputPreview() {
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mShowSlidingKeyInputPreview = false;
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}
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/**
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* Draws the preview
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* @param canvas The canvas where the preview is drawn.
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*/
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@Override
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public void drawPreview(final Canvas canvas) {
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if (!isPreviewEnabled() || mShowSlidingKeyInputPreview == false) {
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return;
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}
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// TODO: Implement rubber band preview
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}
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/**
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* Set the position of the preview.
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* @param tracker The new location of the preview is based on the points in PointerTracker.
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*/
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@Override
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public void setPreviewPosition(final PointerTracker tracker) {
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if (!tracker.isInSlidingKeyInputFromModifier()) {
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mShowSlidingKeyInputPreview = false;
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return;
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}
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tracker.getDownCoordinates(mRubberBandFrom);
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tracker.getLastCoordinates(mRubberBandTo);
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mShowSlidingKeyInputPreview = true;
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getDrawingView().invalidate();
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}
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}
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