Android Open Source - HzGrapher Graph Canvas Wrapper

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Back to project page HzGrapher.

License

The source code is released under:

Apache License

Java Source Code

package com.handstudio.android.hzgrapherlib.canvas;
/*from   w  w  w  . ja va 2  s .c o  m*/
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.RectF;

import com.handstudio.android.hzgrapherlib.util.MatrixTranslator;

/**
 * GraphCanvasWrapper class for drawing on traslate matrix (x coordinate) 
 * @author realwind
 */
public class GraphCanvasWrapper{
  
  private MatrixTranslator mMt;
  private Canvas mCanvas;
  
  public GraphCanvasWrapper(Canvas canvas, int width, int height, int paddingLeft, int paddingBottom) {
    mMt = new MatrixTranslator(width, height, paddingLeft, paddingBottom);
    mCanvas = canvas;
  }
  
  public Canvas getCanvas(){
    return mCanvas;
  }
  
  public void drawCircle(float cx, float cy, float radius, Paint paint) {
    mCanvas.drawCircle(mMt.calcX(cx), mMt.calcY(cy), radius, paint);
  }
  
  public void drawArc(RectF oval, float startAngle, float sweepAngle, boolean useCenter, Paint paint) {
    if(mCanvas != null)
    mCanvas.drawArc(oval, startAngle, sweepAngle, true, paint);
  }

  public void drawRect(float startX, float startY, float stopX, float stopY, Paint paint) {
    mCanvas.drawRect(mMt.calcX(startX), mMt.calcY(startY), mMt.calcX(stopX), mMt.calcY(stopY), paint);
  }
  
  public void drawLine(float startX, float startY, float stopX, float stopY, Paint paint) {
    mCanvas.drawLine(mMt.calcX(startX), mMt.calcY(startY), mMt.calcX(stopX), mMt.calcY(stopY), paint);
  }

  public void drawText(String text, float x, float y, Paint paint){
    mCanvas.drawText(text, mMt.calcX(x), mMt.calcY(y), paint);
  }
  
  public void drawBitmapIcon(Bitmap bitmap, float left, float top, Paint paint){
    mCanvas.drawBitmap(bitmap, mMt.calcBitmapCenterX(bitmap, left), mMt.calcBitmapCenterY(bitmap, top), paint);
  }
}

Java Source Code List

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