CustomTextField.java

package delightex.moe.nativecontrols;

import apple.coregraphics.c.CoreGraphics;
import apple.coregraphics.struct.CGRect;
import apple.uikit.UITextField;
import apple.uikit.struct.UIEdgeInsets;
import org.moe.natj.general.Pointer;
import org.moe.natj.general.ann.ByValue;
import org.moe.natj.general.ann.Generated;
import org.moe.natj.general.ann.Runtime;
import org.moe.natj.objc.ObjCRuntime;
import org.moe.natj.objc.ann.ObjCClassName;
import org.moe.natj.objc.ann.Selector;

@Runtime(ObjCRuntime.class)
@ObjCClassName("CustomTextField")
class CustomTextField extends UITextField {

  private UIEdgeInsets myPaddingInsets;

  protected CustomTextField(Pointer peer) {
    super(peer);
    System.out.println("CustomTextField.ctor");
  }

  @Selector("alloc")
  @Generated
  public static native CustomTextField alloc();

  @Selector("init")
  @Generated
  public native CustomTextField init();

  @Selector("editingRectForBounds:")
  @ByValue
  @Override
  public CGRect editingRectForBounds(@ByValue CGRect cgRect) {
    System.out.println("CustomTextField.editingRectForBounds enter");
    CGRect rect = myPaddingInsets != null ? inset(cgRect, myPaddingInsets) : cgRect;
    System.out.println("CustomTextField.editingRectForBounds leave, rect = " + rect);
    return rect;
  }

  private static CGRect inset(CGRect rect, UIEdgeInsets insets) {
    return CoreGraphics.CGRectMake(
        rect.origin().x() + insets.left(),
        rect.origin().y() + insets.top(),
        rect.size().width() - (insets.left() + insets.right()),
        rect.size().height() - (insets.top() + insets.bottom())
    );
  }

  @Selector("textRectForBounds:")
  @ByValue
  @Generated
  @Override
  public CGRect textRectForBounds(@ByValue CGRect cgRect) {
    System.out.println("CustomTextField.textRectForBounds enter");
    CGRect rect = myPaddingInsets != null ? inset(cgRect, myPaddingInsets) : cgRect;
    System.out.println("CustomTextField.textRectForBounds leave, rect = " + rect);
    return rect;
  }

  void setPadding(double top, double right, double bottom, double left) {
    myPaddingInsets = new UIEdgeInsets(top, left, bottom, right);
    setNeedsLayout();
  }
}