Android Open Source - Android-Charts Axis

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The source code is released under:

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Java Source Code

/*
 * Axis.java// www .  j  a v  a  2 s. co  m
 * Android-Charts
 *
 * Created by limc on 2014.
 *
 * 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.common;

import cn.limc.androidcharts.view.GridChart;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;

/** 
 * <p>en</p>
 * <p>jp</p>
 * <p>cn</p>
 *
 * @author limc 
 * @version v1.0 2014/06/24 18:59:50 
 *  
 */
public abstract class Axis extends Quadrant implements IAxis {
  public static final int DEFAULT_LINE_COLOR = Color.RED;
  public static final float DEFAULT_LINE_WIDTH = 1f;
  public static final int DEFAULT_POSITION = AXIS_X_POSITION_BOTTOM;
  protected int lineColor = DEFAULT_LINE_COLOR;
  protected float lineWidth = DEFAULT_LINE_WIDTH;
  protected int position = DEFAULT_POSITION;
  
  public Axis(GridChart inChart ,int position){
    super(inChart);
    this.paddingTop = 0;
    this.paddingLeft = 0;
    this.paddingBottom = 0;
    this.paddingRight = 0;
    
    this.position = position;
  }
  
  /* (non-Javadoc)
   * 
   * @param canvas 
   * @see cn.limc.androidcharts.common.IAxis#drawAxis(android.graphics.Canvas) 
   */
  public void drawAxis(Canvas canvas) {
    float postX,postY;
    Paint mPaint = new Paint();
    mPaint.setColor(lineColor);
    mPaint.setStrokeWidth(lineWidth);
    if (position == AXIS_X_POSITION_BOTTOM) {
      postY = lineWidth / 2;
      postX = getQuadrantStartX();
      canvas.drawLine(postX,postY, postX + getQuadrantWidth(),postY , mPaint);
    } else if (position == AXIS_X_POSITION_TOP) {
      postY = getQuadrantHeight() - lineWidth / 2;
      postX = getQuadrantStartX();
      canvas.drawLine(postX,postY, postX + getQuadrantWidth(),postY , mPaint);
    } else if (position == AXIS_Y_POSITION_LEFT) {
      postX = getQuadrantWidth() - lineWidth / 2;
      postY = getQuadrantStartX();
      canvas.drawLine(postX,postY, postX,postY + getQuadrantHeight() , mPaint);
    } else {
      postX = lineWidth / 2;
      postY = getQuadrantStartY();
      canvas.drawLine(postX,postY, postX,postY + getQuadrantHeight() , mPaint);
    }
  }

  /**
   * @return the lineColor
   */
  public int getLineColor() {
    return lineColor;
  }

  /**
   * @param lineColor the lineColor to set
   */
  public void setLineColor(int lineColor) {
    this.lineColor = lineColor;
  }

  /**
   * @return the lineWidth
   */
  public float getLineWidth() {
    return lineWidth;
  }

  /**
   * @param lineWidth the lineWidth to set
   */
  public void setLineWidth(float lineWidth) {
    this.lineWidth = lineWidth;
  }

  /**
   * @return the position
   */
  public int getPosition() {
    return position;
  }

  /**
   * @param position the position to set
   */
  public void setPosition(int position) {
    this.position = position;
  }

  /* (non-Javadoc)
   * 
   * @return 
   * @see cn.limc.androidcharts.common.IQuadrant#getQuadrantStartX() 
   */
  public float getQuadrantStartX() {
    if (position == AXIS_X_POSITION_BOTTOM) {
      return 2*inChart.getBorderWidth();
    } else if (position == AXIS_X_POSITION_TOP) {
      return 2*inChart.getBorderWidth();
    } else if (position == AXIS_Y_POSITION_LEFT) {
      return 2*inChart.getBorderWidth();
    } else {
      return inChart.getDataQuadrant().getQuadrantEndX();
    }
  }

  /* (non-Javadoc)
   * 
   * @return 
   * @see cn.limc.androidcharts.common.IQuadrant#getQuadrantStartY() 
   */
  public float getQuadrantStartY() {
    if (position == AXIS_X_POSITION_BOTTOM) {
      return inChart.getDataQuadrant().getQuadrantEndY();
    } else if (position == AXIS_X_POSITION_TOP) {
      return 2*inChart.getBorderWidth();
    } else if (position == AXIS_Y_POSITION_LEFT) {
      return 2*inChart.getBorderWidth();
    } else {
      return 2*inChart.getBorderWidth();
    }
  }
}

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