Android Open Source - crop Round Button

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From Project

Back to project page crop.

License

The source code is released under:

Apache License

Java Source Code

package net.flask.crop.ui;
// ww  w.j  a va  2 s. c  om
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.PointF;
import android.graphics.Rect;
import android.graphics.RectF;
import android.graphics.drawable.Drawable;

public class RoundButton {
  private static final Paint defaultPaint;
  private static final Paint defaultPressedPaint;

  static {
    defaultPaint = new Paint();
    defaultPaint.setColor(0xaa111111);
    defaultPaint.setAntiAlias(true);
    defaultPaint.setStyle(Paint.Style.FILL);

    defaultPressedPaint = new Paint();
    defaultPressedPaint.setColor(0x88ffffff);
    defaultPressedPaint.setAntiAlias(true);
    defaultPressedPaint.setStyle(Paint.Style.FILL);
  }

  private Paint paint = defaultPaint;
  private Paint textPaint;
  private RectF rect;
  private PointF center;

  private Rect iconBound;
  private Drawable icon;
  private String text;
  private Paint.Align align;

  private int topPadding = 0;
  private int leftPadding = 0;
  private int iconSize = 32;

  private int topTextPadding = 0;
  private int leftTextPadding = 0;

  private boolean isPressed = false;

  public RoundButton(String text, Drawable icon, Paint.Align align) {
    this(0, 0, 0, 0, text, icon, align);
  }

  public RoundButton(int x, int y, int width, int height, String text, Drawable icon, Paint.Align align) {
    this.rect = new RectF(x, y, x + width, y + height);
    this.align = align;

    this.textPaint = new Paint();
    this.textPaint.setColor(0xffffffff);
    this.textPaint.setAntiAlias(true);
    this.textPaint.setTextAlign(align);
    this.textPaint.setTextSize(height / 5f);

    setText(text);
    setIcon(icon, align);
  }

  public void setText(String text) {
    this.text = text;
    refreshText();
  }

  public void setIcon(Drawable icon, Paint.Align align) {
    this.icon = icon;
    this.iconBound = new Rect();
    refreshIcon();
  }

  public void setPaint(Paint paint) {
    this.paint = paint;
  }

  private void refreshIcon() {
    int cx = (int) rect.centerX();
    int cy = (int) rect.centerY();

    switch (align) {
      case RIGHT:
        leftPadding = (int) (rect.width() / 2 - iconSize);
        leftTextPadding = leftPadding - iconSize;
        break;
      case LEFT:
        leftPadding = (int) (rect.width() / 2 - iconSize);
        leftTextPadding = leftPadding - iconSize;
        leftPadding *= -1;
        leftTextPadding *= -1;
        break;
      case CENTER:
        topPadding = iconSize / 2;
        topTextPadding = (int) (-rect.bottom / 2 + topPadding * 1.5f);//-topPadding;
        break;
    }

    this.iconBound.set(cx - iconSize / 2 + leftPadding, cy - iconSize / 2 - topPadding, cx + iconSize / 2 + leftPadding, cy + iconSize / 2 - topPadding);
    this.icon.setBounds(iconBound);
  }

  private void refreshText() {
    this.center = new PointF(rect.centerX(), rect.centerY() - ((textPaint.descent() + textPaint.ascent()) / 2));
  }

  public void draw(Canvas canvas) {
    canvas.drawRoundRect(rect, 5, 5, paint);
    canvas.drawText(text, center.x + leftTextPadding, center.y - topTextPadding, textPaint);
    if (isPressed)
      canvas.drawRoundRect(rect, 5, 5, defaultPressedPaint);

    if (icon != null) icon.draw(canvas);
  }

  public boolean contains(int x, int y) {
    return rect.contains(x, y);
  }

  public void setRect(int x, int y, int width, int height) {
    this.rect = new RectF(x, y, x + width, y + height);
    this.textPaint.setTextSize(height / 5f);
    refreshIcon();
    refreshText();
  }

  public void showOnPress() {
    isPressed = true;
  }

  public void hideOnPress() {
    isPressed = false;
  }

  public String getText() {
    return text;
  }
}

Java Source Code List

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