Android Open Source - graph-android Ambil Warna Kotak

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License

The source code is released under:

GNU General Public License

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Java Source Code

package yuku.ambilwarna;
//w w  w. ja va2  s . c om
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 AmbilWarnaKotak extends View {
        Paint paint;
        Shader luar;
        final float[] color = { 1.f, 1.f, 1.f };

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

        public AmbilWarnaKotak(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();
        }
}

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