draw Text for alignment - Android android.graphics

Android examples for android.graphics:Canvas

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  2. Android
  3. android.graphics
  4. Canvas

Description

draw Text for alignment

Demo Code

import android.graphics.Canvas;
import android.graphics.Paint;

enum Gravity {/*from  w w  w  .  j ava2  s  . c  om*/
  GRAVITY_LEFT, GRAVITY_RIGHT, GRAVITY_TOP, GRAVITY_BOTTOM, GRAVITY_CENTER
}

public class Main {

  public static void drawText(Canvas canvas, Paint paint, float x, float y, String text, Gravity vertical,
      Gravity horizontal) {
    float sizeX = paint.measureText(text);
    float sizeY = paint.getTextSize();
    float tx = x;
    float ty = y;
    switch (vertical) {
    case GRAVITY_TOP:
      ty += sizeY;
      break;
    case GRAVITY_CENTER:
      ty += sizeY / 2f;
      break;
    case GRAVITY_BOTTOM:
      // OK
      break;
    }
    switch (horizontal) {
    case GRAVITY_RIGHT:
      tx -= sizeX;
      break;
    case GRAVITY_CENTER:
      tx -= sizeX / 2f;
      break;
    case GRAVITY_LEFT:
      // OK
      break;
    }

    canvas.drawText(text, tx, ty, paint);
  }

}

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