blob: e6222158e18b7938b24e80dce7c28cb5067ec2b1 [file] [log] [blame]
/*
* Copyright 2012 AndroidPlot.com
*
* 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.androidplot;
import android.graphics.Canvas;
/**
* Defines methods used for monitoring events generated by a Plot.
*/
public interface PlotListener {
/**
* Fired immediately before the Plot "source" is drawn onto canvas.
* Commonly used by implementing Series instances to activate a read
* lock on it's self in preparation for the Plot's imminent reading
* of that series.
* @param source
* @param canvas
*/
public void onBeforeDraw(Plot source, Canvas canvas);
/**
* Fired immediately after the Plot "source" is drawn onto canvas.
* Just as onBeforeDraw(...) is commonly used by Series implementations
* to activate a read lock, this method is commonly used to release that
* same lock.
* @param source
* @param canvas
*/
public void onAfterDraw(Plot source, Canvas canvas);
}