Android Open Source - Android-Charts Minus Stick Chart

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Java Source Code

/*
 * MinusStickChart.java//from ww  w.j a v  a 2  s. com
 * Android-Charts
 *
 * Created by limc on 2011/05/29.
 *
 * Copyright 2011 limc.cn All rights reserved.
 *
 * 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 cn.limc.androidcharts.view;

import cn.limc.androidcharts.entity.IMeasurable;
import cn.limc.androidcharts.mole.StickMole;

import android.content.Context;
import android.graphics.Canvas;
import android.util.AttributeSet;

/**
 * 
 * <p>
 * MinusStickChart is inherits from StickChart which its data can be minus value
 * </p>
 * <p>
 * MinusStickChart??????????????????????????????????????????????????
 * </p>
 * <p>
 * MinusStickChart???StickChart???????StickChart??????????????????
 * </p>
 * 
 * @author limc
 * @version v1.0 2011/05/30 15:11:43
 * 
 */
public class MinusStickChart extends StickChart {
  @Override
  protected void calcDataValueRange() {

    double maxValue = -Double.MAX_VALUE;
    double minValue = Double.MAX_VALUE;

    IMeasurable first = this.stickData.get(0);
    // ???stick????????
    if (first.getHigh() == 0 && first.getLow() == 0) {

    } else {
      maxValue = first.getHigh();
      minValue = first.getLow();
    }

    // ???????????????
    for (int i = 0; i < this.stickData.size(); i++) {
      IMeasurable stick = this.stickData.get(i);
      if (stick.getLow() < minValue) {
        minValue = stick.getLow();
      }

      if (stick.getHigh() > maxValue) {
        maxValue = stick.getHigh();
      }

    }

    this.maxValue = maxValue;
    this.minValue = minValue;
  }
  
  @Override
  protected void calcValueRangePaddingZero(){
    
  }
  
  @Override
  protected void calcValueRangeFormatForAxis() {
    
  }
  
  /*
   * (non-Javadoc)
   * 
   * @param context
   * 
   * @see cn.limc.androidcharts.view.GridChart#GridChart(Context)
   */
  public MinusStickChart(Context context) {
    super(context);
  }

  /*
   * (non-Javadoc)
   * 
   * @param context
   * 
   * @param attrs
   * 
   * @param defStyle
   * 
   * @see cn.limc.androidcharts.view.GridChart#GridChart(Context,
   * AttributeSet, int)
   */
  public MinusStickChart(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);
  }

  /*
   * (non-Javadoc)
   * 
   * @param context
   * 
   * @param attrs
   * 
   * @see cn.limc.androidcharts.view.GridChart#GridChart(Context,
   * AttributeSet)
   */
  public MinusStickChart(Context context, AttributeSet attrs) {
    super(context, attrs);
  }

  /*
   * (non-Javadoc)
   * 
   * @param canvas
   * 
   * 
   * 
   * @see cn.limc.androidcharts.view.StickChart#drawSticks(Canvas)
   */
  @Override
  protected void drawSticks(Canvas canvas) {
    if (null == stickData) {
      return;
    }
    if (stickData.size() <= 0) {
      return;
    }

    float stickWidth = dataQuadrant.getQuadrantPaddingWidth() / maxSticksNum
        - stickSpacing;

    if (axisYPosition == AXIS_Y_POSITION_LEFT) {

      float stickX = dataQuadrant.getQuadrantPaddingStartX();
      for (int i = 0; i < stickData.size(); i++) {
        IMeasurable stick = stickData.get(i);
        StickMole mole = (StickMole)provider.getMole();
        mole.setUp(this,stick,stickX,stickWidth);
        mole.draw(canvas);
        // next x
        stickX = stickX + stickSpacing + stickWidth;
      }
    } else {
      float stickX = dataQuadrant.getQuadrantPaddingEndX() - stickWidth;
      for (int i = stickData.size() - 1; i >= 0; i--) {
        IMeasurable stick = stickData.get(i);
        StickMole mole = (StickMole)provider.getMole();
        mole.setUp(this,stick,stickX,stickWidth);
        mole.draw(canvas);
        // next x
        stickX = stickX - stickSpacing - stickWidth;
      }
    }
  }
}

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