Android Open Source - markj Pie Percent Skin

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License

The source code is released under:
GNU Lesser General Public License
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Java Source Code

package com.markjmind.mobile.api.android.ui.graph;
/*from  ww w . j a va 2s .  c  om*/
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Path;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup.MarginLayoutParams;
import android.widget.LinearLayout;
import android.widget.TextView;

/**
 * ???? ?????? ????? ???? ?????? ???? ??
 * 
 * @author ???
 * 
 */
public class PiePercentSkin implements IPieSkin {
  private PieLayout pl;

  private float fontSize;
  private float textSize;

  private MarginLayoutParams layoutParams;
  private LinearLayout layout;
  private TextView textView;

  public PiePercentSkin(float fontSize, float textSize) {
    this.fontSize = fontSize;
    this.textSize = textSize;
  }

  @Override
  public void init(PieLayout pieLayout) {
    this.pl = pieLayout;
    pl.setMarginArc((int) textSize);
    textSize = textSize * pl.density;

    layout = new LinearLayout(pl.getContext());
    layoutParams = new MarginLayoutParams(MarginLayoutParams.WRAP_CONTENT, MarginLayoutParams.WRAP_CONTENT);
    layout.setLayoutParams(layoutParams);
    layout.setOrientation(layout.HORIZONTAL);
    textView = new TextView(pl.getContext());
    textView.setLayoutParams(new MarginLayoutParams(MarginLayoutParams.WRAP_CONTENT,
            MarginLayoutParams.WRAP_CONTENT));
    textView.setTextColor(Color.WHITE);
    textView.setTextSize(fontSize);
    TextView p = new TextView(pl.getContext());
    MarginLayoutParams marginParams = new MarginLayoutParams(MarginLayoutParams.WRAP_CONTENT,
            MarginLayoutParams.MATCH_PARENT);
    p.setLayoutParams(marginParams);
    p.setPadding(0, 5, 0, 0);
    p.setText("%");
    p.setTextColor(Color.WHITE);
    p.setTextSize(fontSize / 2);
    layout.addView(textView, layout.getLayoutParams());
    layout.addView(p);
    textView.setVisibility(View.INVISIBLE);
    // pl.addView(layout);
  }

  @Override
  public void draw(PieLayout pieLayout, Canvas canvas, float startAngle, float maxAngle, float startRadians,
          float radians, int arcIndex) {
    int value = (int) Math.round(radians * 100f / (maxAngle - startAngle));
    if (pl == null) {
      return;
    }
    String strValue = String.valueOf(value);

    float textWidth = fontSize * (strValue.length()) + pl.density * 2 + fontSize / 2;
    float lineLenth = 6f * pl.density;

    float centerX = pl.getWidth() / 2;
    float centerY = pl.getHeight() / 2;

    float r = pl.getHeight() / 2 - textSize;

    float rx = r + textWidth / 2 + lineLenth + lineLenth / 3;
    float ry = r + fontSize + lineLenth + lineLenth / 3;

    float start = startAngle - 90;
    float realRadians = (360 + (radians + start) % 360) % 360;

    float x = (float) (rx * Math.cos(Math.toRadians(realRadians)) + centerX);
    float y = (float) (ry * Math.sin(Math.toRadians(realRadians)) + centerY) - pl.density;

    x = x - textWidth / 2;
    y = y - fontSize - pl.density;

    Paint textPaint = new Paint();
    textPaint.setAntiAlias(true);
    textPaint.setColor(Color.WHITE);
    textPaint.setTextSize(fontSize * pl.density);
    textPaint.setTextAlign(Paint.Align.RIGHT);
    canvas.drawText(strValue, x + fontSize * strValue.length() + pl.density, y + fontSize / 2 * pl.density + 2
            * pl.density, textPaint);
    textPaint.setTextSize(fontSize * pl.density / 2);
    textPaint.setTextAlign(Paint.Align.LEFT);
    canvas.drawText("%", x + fontSize * strValue.length() + pl.density, y + fontSize / 2 * pl.density + 2
            * pl.density, textPaint);

    float x1 = (float) ((r) * Math.cos(Math.toRadians(realRadians)) + centerX);
    float y1 = (float) ((r) * Math.sin(Math.toRadians(realRadians)) + centerY);
    float x2 = (float) (x1 + lineLenth * Math.cos(Math.toRadians(realRadians + 30)));
    float y2 = (float) (y1 + lineLenth * Math.sin(Math.toRadians(realRadians + 30)));
    float x3 = (float) (x1 + lineLenth * Math.cos(Math.toRadians(realRadians - 30)));
    float y3 = (float) (y1 + lineLenth * Math.sin(Math.toRadians(realRadians - 30)));
    Paint paint = new Paint();
    paint.setAntiAlias(true);
    paint.setColor(Color.WHITE);
    paint.setStyle(Paint.Style.FILL);
    Path path = new Path();
    path.reset();
    path.moveTo(x1, y1);

    path.lineTo(x2, y2);
    path.lineTo(x3, y3);

    path.close();
    canvas.drawPath(path, paint);
  }

  /*
   * ???? ?? ??
   * 
   * @Override public void draw(PieLayout pieLayout, Canvas canvas, float
   * startAngle, float maxAngle, float startRadians, float radians, int
   * arcIndex) { int value
   * =(int)Math.round(radians*100f/(maxAngle-startAngle)); String strValue =
   * String.valueOf(value); textView.setText(strValue);
   * 
   * float textWidth = layout.getWidth(); float lineLenth = 6f*pl.density;
   * 
   * float centerX = pl.getWidth()/2; float centerY = pl.getHeight()/2;
   * 
   * 
   * 
   * float r = pl.getHeight()/2-textSize;
   * 
   * float rx = r+textWidth/2+lineLenth+lineLenth/3; float ry =
   * r+fontSize+lineLenth+lineLenth/3;
   * 
   * float start = startAngle-90; float realRadians =
   * (360+(radians+start)%360)%360;
   * 
   * float x = (float)(rx*Math.cos(Math.toRadians(realRadians))+ centerX);
   * float y =(float)(ry*Math.sin(Math.toRadians(realRadians))+
   * centerY)-pl.density;
   * 
   * x = x-textWidth/2; y = y-fontSize-pl.density; layout.setX(x);
   * layout.setY(y);
   * 
   * 
   * 
   * float x1 = (float)((r)*Math.cos(Math.toRadians(realRadians))+ centerX);
   * float y1 =(float)((r)*Math.sin(Math.toRadians(realRadians))+ centerY);
   * float x2 =
   * (float)(x1+lineLenth*Math.cos(Math.toRadians(realRadians+30))); float y2
   * =(float)(y1+lineLenth*Math.sin(Math.toRadians(realRadians+30))); float x3
   * = (float)(x1+lineLenth*Math.cos(Math.toRadians(realRadians-30))); float
   * y3 =(float)(y1+lineLenth*Math.sin(Math.toRadians(realRadians-30))); Paint
   * paint = new Paint(); paint.setAntiAlias(true);
   * paint.setColor(Color.WHITE); paint.setStyle(Paint.Style.FILL); Path path
   * = new Path(); path.reset(); path.moveTo(x1, y1);
   * 
   * path.lineTo(x2,y2); path.lineTo(x3,y3);
   * 
   * path.close(); canvas.drawPath(path, paint); }
   */

}
Java Source Code List
