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| 1 #ifndef EXPERIMENTAL_PDFVIEWER_SKTRACKER_H_ |
| 2 #define EXPERIMENTAL_PDFVIEWER_SKTRACKER_H_ |
| 3 |
| 4 #include "SkBitmap.h" |
| 5 #include "SkPoint.h" |
| 6 |
| 7 #define MAX_TRACKING_POINTS 100 |
| 8 |
| 9 class SkTracker { |
| 10 public: |
| 11 SkTracker() : fEnabled(false) |
| 12 , fBreakOnAny(false) |
| 13 , fCntExpectedTouched(0) |
| 14 , fCntExpectedUntouched(0) |
| 15 , fHits(0) {} |
| 16 |
| 17 virtual ~SkTracker() {} |
| 18 |
| 19 void clearPoints() { |
| 20 fCntExpectedTouched = 0; |
| 21 fCntExpectedUntouched = 0; |
| 22 } |
| 23 |
| 24 void enableTracking(bool b) { |
| 25 fEnabled = b; |
| 26 } |
| 27 |
| 28 bool trackingEnabled() { |
| 29 return fEnabled; |
| 30 } |
| 31 |
| 32 void any() { |
| 33 fBreakOnAny = true; |
| 34 } |
| 35 |
| 36 void all() { |
| 37 fBreakOnAny = false; |
| 38 } |
| 39 |
| 40 bool requireAllExpectedTouched() { |
| 41 return !fBreakOnAny; |
| 42 } |
| 43 |
| 44 int cntExpectedTouched() { |
| 45 return fCntExpectedTouched; |
| 46 } |
| 47 |
| 48 const SkIPoint* expectedTouched() { |
| 49 return fExpectedTouched; |
| 50 } |
| 51 |
| 52 int cntExpectedUntouched() { |
| 53 return fCntExpectedUntouched; |
| 54 } |
| 55 |
| 56 const SkIPoint* expectedUntouched() { |
| 57 return fExpectedUntouched; |
| 58 } |
| 59 |
| 60 bool addExpectTouch(int x, int y) { |
| 61 if (fCntExpectedTouched >= MAX_TRACKING_POINTS) { |
| 62 return false; |
| 63 } |
| 64 if (found(x, y)) { |
| 65 return false; |
| 66 } |
| 67 fExpectedTouched[fCntExpectedTouched] = SkIPoint::Make(x, y); |
| 68 fCntExpectedTouched++; |
| 69 return true; |
| 70 } |
| 71 |
| 72 bool addExpectUntouch(int x, int y) { |
| 73 if (fCntExpectedUntouched >= MAX_TRACKING_POINTS) { |
| 74 return false; |
| 75 } |
| 76 if (found(x, y)) { |
| 77 return false; |
| 78 } |
| 79 fExpectedUntouched[fCntExpectedUntouched] = SkIPoint::Make(x, y); |
| 80 fCntExpectedUntouched++; |
| 81 return true; |
| 82 } |
| 83 |
| 84 void newFrame() { |
| 85 fHits = 0; |
| 86 } |
| 87 |
| 88 int hits() { |
| 89 return fHits; |
| 90 } |
| 91 |
| 92 void before(const SkBitmap& bitmap) { |
| 93 if (fCntExpectedTouched == 0) { |
| 94 return; |
| 95 } |
| 96 |
| 97 for (int i = 0 ; i < fCntExpectedTouched; i++) { |
| 98 fBeforeTouched[i] = pickColor(bitmap, fExpectedTouched[i].x(), fExpe
ctedTouched[i].y()); |
| 99 } |
| 100 for (int i = 0 ; i < fCntExpectedUntouched; i++) { |
| 101 fBeforeUntouched[i] = pickColor(bitmap, fExpectedUntouched[i].x(), f
ExpectedUntouched[i].y()); |
| 102 } |
| 103 } |
| 104 |
| 105 // any/all of the expected touched has to be changed, and all expected untou
ched must be intact |
| 106 void after(const SkBitmap& bitmap) { |
| 107 if (fCntExpectedTouched == 0) { |
| 108 return; |
| 109 } |
| 110 |
| 111 bool doBreak; |
| 112 if (fBreakOnAny) { |
| 113 doBreak = false; |
| 114 for (int i = 0 ; i < fCntExpectedTouched; i++) { |
| 115 doBreak = doBreak || fBeforeTouched[i] != pickColor(bitmap, fExp
ectedTouched[i].x(), fExpectedTouched[i].y()); |
| 116 } |
| 117 } else { |
| 118 doBreak = true; |
| 119 for (int i = 0 ; i < fCntExpectedTouched; i++) { |
| 120 doBreak = doBreak && fBeforeTouched[i] != pickColor(bitmap, fExp
ectedTouched[i].x(), fExpectedTouched[i].y()); |
| 121 } |
| 122 } |
| 123 |
| 124 for (int i = 0 ; i < fCntExpectedUntouched; i++) { |
| 125 doBreak = doBreak && fBeforeUntouched[i] == pickColor(bitmap, fExpec
tedUntouched[i].x(), fExpectedUntouched[i].y()); |
| 126 } |
| 127 |
| 128 if (doBreak) { |
| 129 fHits++; |
| 130 if (fEnabled) { |
| 131 breakExecution(); |
| 132 } |
| 133 } |
| 134 } |
| 135 |
| 136 private: |
| 137 inline SkColor pickColor(const SkBitmap& bitmap, int x, int y) { |
| 138 return bitmap.getColor(x, y); |
| 139 } |
| 140 |
| 141 void breakExecution() { |
| 142 printf("break;\n"); |
| 143 } |
| 144 |
| 145 inline bool found(int x, int y) { |
| 146 for (int i = 0 ; i < fCntExpectedTouched; i++) { |
| 147 if (x == fExpectedTouched[i].x() && y == fExpectedTouched[i].y()) { |
| 148 return true; |
| 149 } |
| 150 } |
| 151 for (int i = 0 ; i < fCntExpectedUntouched; i++) { |
| 152 if (x == fExpectedUntouched[i].x() && y == fExpectedUntouched[i].y()
) { |
| 153 return true; |
| 154 } |
| 155 } |
| 156 return false; |
| 157 } |
| 158 |
| 159 |
| 160 bool fEnabled; |
| 161 // break on any change on expected touched or all. |
| 162 bool fBreakOnAny; |
| 163 SkIPoint fExpectedTouched[MAX_TRACKING_POINTS]; |
| 164 SkColor fBeforeTouched[MAX_TRACKING_POINTS]; |
| 165 int fCntExpectedTouched; |
| 166 |
| 167 SkIPoint fExpectedUntouched[MAX_TRACKING_POINTS]; |
| 168 SkColor fBeforeUntouched[MAX_TRACKING_POINTS]; |
| 169 int fCntExpectedUntouched; |
| 170 |
| 171 int fHits; |
| 172 }; |
| 173 |
| 174 #endif // EXPERIMENTAL_PDFVIEWER_SKTRACKER_H_ |
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