Android Open Source - minak I M E Modifiers

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License

The source code is released under:

GNU General Public License

Java Source Code

package us.minak;
/*  w ww.  ja v a2  s .c o  m*/
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.view.KeyEvent;
import java.util.ArrayList;
import java.util.List;

public class IMEModifiers {
  // FIXME: hard-coded configuration
  private final IMEModifier[] modifiers = {
    new IMEModifier("Shift", KeyEvent.KEYCODE_SHIFT_LEFT, KeyEvent.META_SHIFT_ON),
    new IMEModifier("Ctrl" , KeyEvent.KEYCODE_CTRL_LEFT , KeyEvent.META_CTRL_ON ),
    new IMEModifier("Alt"  , KeyEvent.KEYCODE_ALT_LEFT  , KeyEvent.META_ALT_ON  )};

  // Static drawing resources
  private final Paint colorPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
  private final Paint textPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
  
  // Pre-calculated graphics stuff
  private float cx = 0;
  private float cy = 0;
  private double innerR = 0;
  private double outerR = 0;
  private double radEach = 0;
   
  // The current state
  ArrayList<IMEModifier> selected = new ArrayList<IMEModifier>();
  
  public IMEModifiers() {
    textPaint.setColor(Color.BLACK);
  }
  
  public void draw(Canvas canvas, float cx, float cy, float r) {
    this.cx = cx;
    this.cy = cy;
    innerR = r*(1.2/3.0);
    outerR = r*(1.8/3.0);
    radEach = (Math.PI*2.0)/modifiers.length;

    double textR = r*.8;

    double rad = 0;
    float[] hsv = {0F, 1F, .75F};

    for (int i = 0; i < modifiers.length; i++) {
      rad = radEach * i;
      hsv[0] = (float)Math.toDegrees(rad);
      colorPaint.setColor(Color.HSVToColor(0x80, hsv));
    
      if (selected.contains(modifiers[i])) {
        canvas.drawRect(0, 0, canvas.getWidth(), canvas.getHeight(), colorPaint);
      } else {
        canvas.drawCircle((float)(cx+innerR*Math.cos(rad)),
                          (float)(cy+innerR*Math.sin(rad)),
                          (float)outerR,
                          colorPaint);
      }
      canvas.drawText(modifiers[i].name,
                      (float)(cx+textR*Math.cos(rad)),
                      (float)(cy+textR*Math.sin(rad)),
                      textPaint);
    }
  }
  
  public void setSelectionPoint(float x, float y) {
    selected.clear();
    
    double mx;
    double my;
    double rad = 0;
    for (int i = 0; i < modifiers.length; i++) {
      rad = radEach * i;
      mx = cx+innerR*Math.cos(rad);
      my = cy+innerR*Math.sin(rad);
      
      if (Math.sqrt(Math.pow(mx-x,2)+Math.pow(my-y, 2)) < outerR)
        selected.add(modifiers[i]);
    }
  }

  public List<IMEModifier> getSelection() {
    return selected;
  }

  public void clearSelection() {
    selected.clear();
  }
}

Java Source Code List

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