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/*
* Copyright (C) 2016 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.dialer.callcomposer.camera.camerafocus;
import android.content.Context;
import android.graphics.Canvas;
import android.view.MotionEvent;
/** Abstract class that all Camera overlays should implement. */
public abstract class OverlayRenderer implements RenderOverlay.Renderer {
protected RenderOverlay mOverlay;
private int mLeft;
private int mTop;
private int mRight;
private int mBottom;
private boolean mVisible;
public void setVisible(boolean vis) {
mVisible = vis;
update();
}
public boolean isVisible() {
return mVisible;
}
// default does not handle touch
@Override
public boolean handlesTouch() {
return false;
}
@Override
public boolean onTouchEvent(MotionEvent evt) {
return false;
}
public abstract void onDraw(Canvas canvas);
@Override
public void draw(Canvas canvas) {
if (mVisible) {
onDraw(canvas);
}
}
@Override
public void setOverlay(RenderOverlay overlay) {
mOverlay = overlay;
}
@Override
public void layout(int left, int top, int right, int bottom) {
mLeft = left;
mRight = right;
mTop = top;
mBottom = bottom;
}
protected Context getContext() {
if (mOverlay != null) {
return mOverlay.getContext();
} else {
return null;
}
}
public int getWidth() {
return mRight - mLeft;
}
public int getHeight() {
return mBottom - mTop;
}
protected void update() {
if (mOverlay != null) {
mOverlay.update();
}
}
}
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