67 lines
2 KiB
Java
67 lines
2 KiB
Java
/*
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* Copyright (C) 2012 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.graphics.Canvas;
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import android.view.View;
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import com.android.inputmethod.keyboard.PointerTracker;
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/**
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* Abstract base class for previews that are drawn on PreviewPlacerView, e.g.,
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* GestureFloatingPrevewText, GestureTrail, and SlidingKeyInputPreview.
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*/
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public abstract class AbstractDrawingPreview {
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private final View mDrawingView;
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private boolean mPreviewEnabled;
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protected AbstractDrawingPreview(final View drawingView) {
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mDrawingView = drawingView;
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}
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public final View getDrawingView() {
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return mDrawingView;
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}
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public final void setPreviewEnabled(final boolean enabled) {
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mPreviewEnabled = enabled;
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}
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public boolean isPreviewEnabled() {
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return mPreviewEnabled;
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}
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public void setKeyboardGeometry(final int[] originCoords, final int width, final int height) {
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// Default implementation is empty.
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}
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public void onDetachFromWindow() {
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// Default implementation is empty.
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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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public abstract void drawPreview(final Canvas canvas);
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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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public abstract void setPreviewPosition(final PointerTracker tracker);
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}
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