Android Open Source - akrellm Ambil Warna Dialog

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License

The source code is released under:

Copyright (c) 2012, Tim Edwards All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: ...

Java Source Code

package yuku.ambilwarna;
/*from ww  w . ja v  a 2  s.  c  o  m*/
import android.app.*;
import android.content.*;
import android.content.DialogInterface.OnCancelListener;
import android.graphics.*;
import android.view.*;
import android.widget.*;

public class AmbilWarnaDialog {
  public interface OnAmbilWarnaListener {
    void onCancel(AmbilWarnaDialog dialog);
    void onOk(AmbilWarnaDialog dialog, int color);
  }

  final AlertDialog dialog;
  final OnAmbilWarnaListener listener;
  final View viewHue;
  final AmbilWarnaKotak viewSatVal;
  final ImageView viewCursor;
  final View viewOldColor;
  final View viewNewColor;
  final ImageView viewTarget;
  final ViewGroup viewContainer;
  final float[] currentColorHsv = new float[3];

  /**
   * create an AmbilWarnaDialog. call this only from OnCreateDialog() or from a background thread.
   * 
   * @param context
   *            current context
   * @param color
   *            current color
   * @param listener
   *            an OnAmbilWarnaListener, allowing you to get back error or
   */
  public AmbilWarnaDialog(final Context context, int color, OnAmbilWarnaListener listener) {
    this.listener = listener;
    Color.colorToHSV(color, currentColorHsv);

    final View view = LayoutInflater.from(context).inflate(R.layout.ambilwarna_dialog, null);
    viewHue = view.findViewById(R.id.ambilwarna_viewHue);
    viewSatVal = (AmbilWarnaKotak) view.findViewById(R.id.ambilwarna_viewSatBri);
    viewCursor = (ImageView) view.findViewById(R.id.ambilwarna_cursor);
    viewOldColor = view.findViewById(R.id.ambilwarna_warnaLama);
    viewNewColor = view.findViewById(R.id.ambilwarna_warnaBaru);
    viewTarget = (ImageView) view.findViewById(R.id.ambilwarna_target);
    viewContainer = (ViewGroup) view.findViewById(R.id.ambilwarna_viewContainer);

    viewSatVal.setHue(getHue());
    viewOldColor.setBackgroundColor(color);
    viewNewColor.setBackgroundColor(color);

    viewHue.setOnTouchListener(new View.OnTouchListener() {
      @Override public boolean onTouch(View v, MotionEvent event) {
        if (event.getAction() == MotionEvent.ACTION_MOVE
            || event.getAction() == MotionEvent.ACTION_DOWN
            || event.getAction() == MotionEvent.ACTION_UP) {

          float y = event.getY();
          if (y < 0.f) y = 0.f;
          if (y > viewHue.getMeasuredHeight()) y = viewHue.getMeasuredHeight() - 0.001f; // to avoid looping from end to start.
          float hue = 360.f - 360.f / viewHue.getMeasuredHeight() * y;
          if (hue == 360.f) hue = 0.f;
          setHue(hue);

          // update view
          viewSatVal.setHue(getHue());
          moveCursor();
          viewNewColor.setBackgroundColor(getColor());

          return true;
        }
        return false;
      }
    });
    viewSatVal.setOnTouchListener(new View.OnTouchListener() {
      @Override public boolean onTouch(View v, MotionEvent event) {
        if (event.getAction() == MotionEvent.ACTION_MOVE
            || event.getAction() == MotionEvent.ACTION_DOWN
            || event.getAction() == MotionEvent.ACTION_UP) {

          float x = event.getX(); // touch event are in dp units.
          float y = event.getY();

          if (x < 0.f) x = 0.f;
          if (x > viewSatVal.getMeasuredWidth()) x = viewSatVal.getMeasuredWidth();
          if (y < 0.f) y = 0.f;
          if (y > viewSatVal.getMeasuredHeight()) y = viewSatVal.getMeasuredHeight();

          setSat(1.f / viewSatVal.getMeasuredWidth() * x);
          setVal(1.f - (1.f / viewSatVal.getMeasuredHeight() * y));

          // update view
          moveTarget();
          viewNewColor.setBackgroundColor(getColor());

          return true;
        }
        return false;
      }
    });

    dialog = new AlertDialog.Builder(context)
      .setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {
        @Override public void onClick(DialogInterface dialog, int which) {
          if (AmbilWarnaDialog.this.listener != null) {
            AmbilWarnaDialog.this.listener.onOk(AmbilWarnaDialog.this, getColor());
          }
        }
      })
      .setNegativeButton(android.R.string.cancel, new DialogInterface.OnClickListener() {
        @Override public void onClick(DialogInterface dialog, int which) {
          if (AmbilWarnaDialog.this.listener != null) {
            AmbilWarnaDialog.this.listener.onCancel(AmbilWarnaDialog.this);
          }
        }
      })
      .setOnCancelListener(new OnCancelListener() {
        // if back button is used, call back our listener.
        @Override public void onCancel(DialogInterface paramDialogInterface) {
          if (AmbilWarnaDialog.this.listener != null) {
            AmbilWarnaDialog.this.listener.onCancel(AmbilWarnaDialog.this);
          }

        }
      })
      .create();
    // kill all padding from the dialog window
    dialog.setView(view, 0, 0, 0, 0);

    // move cursor & target on first draw
    ViewTreeObserver vto = view.getViewTreeObserver();
    vto.addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
      @Override public void onGlobalLayout() {
        moveCursor();
        moveTarget();
        view.getViewTreeObserver().removeGlobalOnLayoutListener(this);
      }
    });
  }

  protected void moveCursor() {
    float y = viewHue.getMeasuredHeight() - (getHue() * viewHue.getMeasuredHeight() / 360.f);
    if (y == viewHue.getMeasuredHeight()) y = 0.f;
    RelativeLayout.LayoutParams layoutParams = (RelativeLayout.LayoutParams) viewCursor.getLayoutParams();
    layoutParams.leftMargin = (int) (viewHue.getLeft() - Math.floor(viewCursor.getMeasuredWidth() / 2) - viewContainer.getPaddingLeft());
    ;
    layoutParams.topMargin = (int) (viewHue.getTop() + y - Math.floor(viewCursor.getMeasuredHeight() / 2) - viewContainer.getPaddingTop());
    ;
    viewCursor.setLayoutParams(layoutParams);
  }

  protected void moveTarget() {
    float x = getSat() * viewSatVal.getMeasuredWidth();
    float y = (1.f - getVal()) * viewSatVal.getMeasuredHeight();
    RelativeLayout.LayoutParams layoutParams = (RelativeLayout.LayoutParams) viewTarget.getLayoutParams();
    layoutParams.leftMargin = (int) (viewSatVal.getLeft() + x - Math.floor(viewTarget.getMeasuredWidth() / 2) - viewContainer.getPaddingLeft());
    layoutParams.topMargin = (int) (viewSatVal.getTop() + y - Math.floor(viewTarget.getMeasuredHeight() / 2) - viewContainer.getPaddingTop());
    viewTarget.setLayoutParams(layoutParams);
  }

  private int getColor() {
    return Color.HSVToColor(currentColorHsv);
  }

  private float getHue() {
    return currentColorHsv[0];
  }

  private float getSat() {
    return currentColorHsv[1];
  }

  private float getVal() {
    return currentColorHsv[2];
  }

  private void setHue(float hue) {
    currentColorHsv[0] = hue;
  }

  private void setSat(float sat) {
    currentColorHsv[1] = sat;
  }

  private void setVal(float val) {
    currentColorHsv[2] = val;
  }

  public void show() {
    dialog.show();
  }

  public AlertDialog getDialog() {
    return dialog;
  }
}

Java Source Code List

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