| /* |
| * Copyright (C) 2012 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.internal; |
| |
| import android.graphics.Canvas; |
| import android.view.View; |
| |
| import com.android.inputmethod.keyboard.PointerTracker; |
| |
| /** |
| * Abstract base class for previews that are drawn on PreviewPlacerView, e.g., |
| * GestureFloatingPrevewText, GestureTrail, and SlidingKeyInputPreview. |
| */ |
| public abstract class AbstractDrawingPreview { |
| private final View mDrawingView; |
| private boolean mPreviewEnabled; |
| |
| protected AbstractDrawingPreview(final View drawingView) { |
| mDrawingView = drawingView; |
| } |
| |
| public final View getDrawingView() { |
| return mDrawingView; |
| } |
| |
| public final void setPreviewEnabled(final boolean enabled) { |
| mPreviewEnabled = enabled; |
| } |
| |
| public boolean isPreviewEnabled() { |
| return mPreviewEnabled; |
| } |
| |
| public void setKeyboardGeometry(final int[] originCoords, final int width, final int height) { |
| // Default implementation is empty. |
| } |
| |
| public void onDetachFromWindow() { |
| // Default implementation is empty. |
| } |
| |
| /** |
| * Draws the preview |
| * @param canvas The canvas where the preview is drawn. |
| */ |
| public abstract void drawPreview(final Canvas canvas); |
| |
| /** |
| * Set the position of the preview. |
| * @param tracker The new location of the preview is based on the points in PointerTracker. |
| */ |
| public abstract void setPreviewPosition(final PointerTracker tracker); |
| } |