Android Open Source - ParticlePlay Color Picker Box

From Project

Back to project page ParticlePlay.

License

The source code is released under:

GNU General Public License

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Java Source Code

package com.droidinteractive.colorpicker;
/*//w ww .ja  va2 s  .  c  o m
 * Copyright (c) 2010 Ragdoll Games
 * Copyright (c) 2010-2014 Droid Interactive
 * Copyright (c) 2010-2014 IDKJava Team
 * 
 * This file is part of Particle Play.
 * 
 * Particle Play is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * Particle Play is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with Particle Play. If not, see <http://www.gnu.org/licenses/>.
 */
import android.annotation.SuppressLint;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.ComposeShader;
import android.graphics.LinearGradient;
import android.graphics.Paint;
import android.graphics.PorterDuff;
import android.graphics.Shader;
import android.graphics.Shader.TileMode;
import android.util.AttributeSet;
import android.view.View;

public class ColorPickerBox extends View {
  Paint paint;
  Shader luar;
  final float[] color = { 1.f, 1.f, 1.f };

  public ColorPickerBox(Context context, AttributeSet attrs) {
    super(context, attrs);
  }

  public ColorPickerBox(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);
  }

  @SuppressLint("DrawAllocation") @Override protected void onDraw(Canvas canvas) {
    super.onDraw(canvas);
    if (paint == null) {
      paint = new Paint();
      luar = new LinearGradient(0.f, 0.f, 0.f, this.getMeasuredHeight(), 0xffffffff, 0xff000000, TileMode.CLAMP);
    }
    int rgb = Color.HSVToColor(color);
    Shader dalam = new LinearGradient(0.f, 0.f, this.getMeasuredWidth(), 0.f, 0xffffffff, rgb, TileMode.CLAMP);
    ComposeShader shader = new ComposeShader(luar, dalam, PorterDuff.Mode.MULTIPLY);
    paint.setShader(shader);
    canvas.drawRect(0.f, 0.f, this.getMeasuredWidth(), this.getMeasuredHeight(), paint);
  }

  void setHue(float hue) {
    color[0] = hue;
    invalidate();
  }
}

Java Source Code List