Android Open Source - Sketcher-Tab Shaded Style

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Back to project page Sketcher-Tab.

License

The source code is released under:

Apache License

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Java Source Code

package org.sketchertab.style;
//from   w ww .  j  a v  a 2  s.  co  m
import android.graphics.Canvas;
import android.graphics.PointF;

import java.util.ArrayList;
import java.util.Map;

class ShadedStyle extends StyleBrush {
    private ArrayList<PointF> points = new ArrayList<PointF>();
    private float density;

    {
        paint.setAntiAlias(true);
    }

    ShadedStyle(float density) {
        this.density = density;
    }

    public void stroke(Canvas c, float x, float y) {
        PointF current = new PointF(x, y);
        points.add(current);

        float dx;
        float dy;
        float length;

        for (int i = 0, max = points.size(); i < max; i++) {
            PointF point = points.get(i);

            dx = point.x - current.x;
            dy = point.y - current.y;

            length = dx * dx + dy * dy;

            float maxLength = 1000 * density * density;
            if (length < maxLength) {
                int targetOpacity = (int) ((1 - (length / maxLength)) * opacity);
                paint.setAlpha(targetOpacity);
                c.drawLine(current.x, current.y, point.x, point.y, paint);
            }
        }
    }

    public void strokeStart(float x, float y) {
    }

    public void draw(Canvas c) {
    }

    public void saveState(Map<StylesFactory.BrushType, Object> state) {
        ArrayList<PointF> points = new ArrayList<PointF>();
        points.addAll(this.points);
        state.put(StylesFactory.BrushType.SHADED, points);
    }

    @SuppressWarnings("unchecked")
    public void restoreState(Map<StylesFactory.BrushType, Object> state) {
        this.points.clear();
        ArrayList<PointF> points = (ArrayList<PointF>) state
                .get(StylesFactory.BrushType.SHADED);
        this.points.addAll(points);
    }
}

Java Source Code List