ImageDraw.java revision 5aa08941bda0cfbcfba522c53937dd66867f890d 
1
2package com.android.gallery3d.filtershow.imageshow;
3
4import android.content.Context;
5import android.graphics.Canvas;
6import android.graphics.Color;
7import android.graphics.Matrix;
8import android.graphics.Paint;
9import android.graphics.Paint.Style;
10import android.graphics.RectF;
11import android.util.AttributeSet;
12import android.util.Log;
13import android.view.MotionEvent;
14
15import com.android.gallery3d.filtershow.filters.ImageFilterDraw;
16import com.android.gallery3d.filtershow.filters.RedEyeCandidate;
17
18public class ImageDraw extends ImageShow {
19
20    private static final String LOGTAG = "ImageDraw";
21
22    public ImageDraw(Context context, AttributeSet attrs) {
23        super(context, attrs);
24    }
25
26    public ImageDraw(Context context) {
27        super(context);
28    }
29
30    @Override
31    public void resetParameter() {
32        ImageFilterDraw filter = (ImageFilterDraw) getCurrentFilter();
33        if (filter != null) {
34            filter.clear();
35        }
36
37        invalidate();
38    }
39
40    @Override
41    public void updateImage() {
42        super.updateImage();
43        invalidate();
44    }
45
46    float[] mTmpPoint = new float[2]; // so we do not malloc
47    @Override
48    public boolean onTouchEvent(MotionEvent event) {
49        if (event.getPointerCount() != 1) {
50            return false;
51        }
52
53        ImageFilterDraw filter = (ImageFilterDraw) getCurrentFilter();
54
55        if (event.getAction() == MotionEvent.ACTION_DOWN) {
56
57            mTmpPoint[0] = event.getX();
58            mTmpPoint[1] = event.getY();
59            mToOrig.mapPoints(mTmpPoint);
60            float[] hsv = new float[3];
61            hsv[0] = (float) (360 * Math.random());
62            hsv[1] = 1;
63            hsv[2] = 1;
64            int col = Color.HSVToColor(0x88, hsv);
65            filter.startSection(col, mTmpPoint[0], mTmpPoint[1]);
66
67        }
68        if (event.getAction() == MotionEvent.ACTION_MOVE) {
69            int historySize = event.getHistorySize();
70            final int pointerCount = event.getPointerCount();
71            for (int h = 0; h < historySize; h++) {
72                int p = 0;
73                {
74                    mTmpPoint[0] = event.getHistoricalX(p, h);
75                    mTmpPoint[1] = event.getHistoricalY(p, h);
76                    mToOrig.mapPoints(mTmpPoint);
77                    filter.addPoint(mTmpPoint[0], mTmpPoint[1]);
78                }
79            }
80        }
81        if (event.getAction() == MotionEvent.ACTION_UP) {
82            mTmpPoint[0] = event.getX();
83            mTmpPoint[1] = event.getY();
84            mToOrig.mapPoints(mTmpPoint);
85            filter.endSection(mTmpPoint[0], mTmpPoint[1]);
86            this.resetImageCaches(this);
87
88        }
89        invalidate();
90        return true;
91    }
92
93    Matrix mRotateToScreen;
94    Matrix mToScreen;
95    Matrix mToOrig = new Matrix();
96    private void calcScreenMapping() {
97
98        GeometryMetadata geo = getImagePreset().mGeoData;
99        mToScreen = geo.getOriginalToScreen(false,
100                mImageLoader.getOriginalBounds().width(),
101                mImageLoader.getOriginalBounds().height(), getWidth(), getHeight());
102        mRotateToScreen = geo.getOriginalToScreen(true,
103                mImageLoader.getOriginalBounds().width(),
104                mImageLoader.getOriginalBounds().height(), getWidth(), getHeight());
105        mRotateToScreen.invert(mToOrig);
106        mToOrig.invert(mRotateToScreen);
107    }
108
109    @Override
110    public void onDraw(Canvas canvas) {
111        super.onDraw(canvas);
112
113        calcScreenMapping();
114
115        ImageFilterDraw filter = (ImageFilterDraw) getCurrentFilter();
116        filter.draw(canvas, mRotateToScreen);
117    }
118}
119