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/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.gallery3d.photoeditor.filters;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.RectF;
import android.media.effect.Effect;
import android.media.effect.EffectContext;
import android.media.effect.EffectFactory;
import com.android.gallery3d.photoeditor.Photo;
import com.android.gallery3d.photoeditor.actions.DoodlePaint;
import java.util.Vector;
/**
* Doodle filter applied to the image.
*/
public class DoodleFilter extends Filter {
private static class ColorPath {
private final int color;
private final Path path;
ColorPath(int color, Path path) {
this.color = color;
this.path = path;
}
}
private final Vector<ColorPath> doodles = new Vector<ColorPath>();
/**
* Signals once at least a doodle drawn within photo bounds; this filter is regarded as invalid
* (no-op on the photo) until not all its doodling is out of bounds.
*/
public void setDoodledInPhotoBounds() {
validate();
}
/**
* The path coordinates used here should range from 0 to 1.
*/
public void addPath(Path path, int color) {
doodles.add(new ColorPath(color, path));
}
@Override
public void process(EffectContext context, Photo src, Photo dst) {
Bitmap bitmap = Bitmap.createBitmap(src.width(), src.height(), Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(bitmap);
Matrix matrix = new Matrix();
matrix.setRectToRect(new RectF(0, 0, 1, 1),
new RectF(0, 0, bitmap.getWidth(), bitmap.getHeight()), Matrix.ScaleToFit.FILL);
Path drawingPath = new Path();
Paint paint = new DoodlePaint();
for (ColorPath doodle : doodles) {
paint.setColor(doodle.color);
drawingPath.set(doodle.path);
drawingPath.transform(matrix);
canvas.drawPath(drawingPath, paint);
}
Effect effect = getEffect(context, EffectFactory.EFFECT_BITMAPOVERLAY);
effect.setParameter("doodle", bitmap);
effect.apply(src.texture(), src.width(), src.height(), dst.texture());
}
}
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