ImageDraw.java revision 63a7dac01d394523799939596b960cb03321798d 
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        super.onTouchEvent(event);
50        if (event.getPointerCount() != 1) {
51            return false;
52        }
53
54        ImageFilterDraw filter = (ImageFilterDraw) getCurrentFilter();
55
56        if (event.getAction() == MotionEvent.ACTION_DOWN) {
57
58            mTmpPoint[0] = event.getX();
59            mTmpPoint[1] = event.getY();
60            mToOrig.mapPoints(mTmpPoint);
61            float[] hsv = new float[3];
62            hsv[0] = (float) (360 * Math.random());
63            hsv[1] = 1;
64            hsv[2] = 1;
65            int col = Color.HSVToColor(0x88, hsv);
66            filter.startSection(col, mTmpPoint[0], mTmpPoint[1]);
67
68        }
69        if (event.getAction() == MotionEvent.ACTION_MOVE) {
70            int historySize = event.getHistorySize();
71            final int pointerCount = event.getPointerCount();
72            for (int h = 0; h < historySize; h++) {
73                int p = 0;
74                {
75                    mTmpPoint[0] = event.getHistoricalX(p, h);
76                    mTmpPoint[1] = event.getHistoricalY(p, h);
77                    mToOrig.mapPoints(mTmpPoint);
78                    filter.addPoint(mTmpPoint[0], mTmpPoint[1]);
79                }
80            }
81        }
82        if (event.getAction() == MotionEvent.ACTION_UP) {
83            mTmpPoint[0] = event.getX();
84            mTmpPoint[1] = event.getY();
85            mToOrig.mapPoints(mTmpPoint);
86            filter.endSection(mTmpPoint[0], mTmpPoint[1]);
87            this.resetImageCaches(this);
88
89        }
90        invalidate();
91        return true;
92    }
93
94    Matrix mRotateToScreen;
95    Matrix mToScreen;
96    Matrix mToOrig = new Matrix();
97    private void calcScreenMapping() {
98
99        GeometryMetadata geo = getImagePreset().mGeoData;
100        mToScreen = geo.getOriginalToScreen(false,
101                mImageLoader.getOriginalBounds().width(),
102                mImageLoader.getOriginalBounds().height(), getWidth(), getHeight());
103        mRotateToScreen = geo.getOriginalToScreen(true,
104                mImageLoader.getOriginalBounds().width(),
105                mImageLoader.getOriginalBounds().height(), getWidth(), getHeight());
106        mRotateToScreen.invert(mToOrig);
107        mToOrig.invert(mRotateToScreen);
108    }
109
110    @Override
111    public void onDraw(Canvas canvas) {
112        super.onDraw(canvas);
113
114        calcScreenMapping();
115
116        ImageFilterDraw filter = (ImageFilterDraw) getCurrentFilter();
117        filter.draw(canvas, mRotateToScreen);
118    }
119}
120