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#ifndef EXPERIMENTAL_PDFVIEWER_SKTRACKER_H_
#define EXPERIMENTAL_PDFVIEWER_SKTRACKER_H_
#include "SkBitmap.h"
#include "SkPoint.h"
#define MAX_TRACKING_POINTS 100
class SkTracker {
public:
SkTracker() : fEnabled(false)
, fBreakOnAny(false)
, fCntExpectedTouched(0)
, fCntExpectedUntouched(0)
, fHits(0) {}
virtual ~SkTracker() {}
void clearPoints() {
fCntExpectedTouched = 0;
fCntExpectedUntouched = 0;
}
void enableTracking(bool b) {
fEnabled = b;
}
bool trackingEnabled() {
return fEnabled;
}
void any() {
fBreakOnAny = true;
}
void all() {
fBreakOnAny = false;
}
bool requireAllExpectedTouched() {
return !fBreakOnAny;
}
int cntExpectedTouched() {
return fCntExpectedTouched;
}
const SkIPoint* expectedTouched() {
return fExpectedTouched;
}
int cntExpectedUntouched() {
return fCntExpectedUntouched;
}
const SkIPoint* expectedUntouched() {
return fExpectedUntouched;
}
bool addExpectTouch(int x, int y) {
if (fCntExpectedTouched >= MAX_TRACKING_POINTS) {
return false;
}
if (found(x, y)) {
return false;
}
fExpectedTouched[fCntExpectedTouched] = SkIPoint::Make(x, y);
fCntExpectedTouched++;
return true;
}
bool addExpectUntouch(int x, int y) {
if (fCntExpectedUntouched >= MAX_TRACKING_POINTS) {
return false;
}
if (found(x, y)) {
return false;
}
fExpectedUntouched[fCntExpectedUntouched] = SkIPoint::Make(x, y);
fCntExpectedUntouched++;
return true;
}
void newFrame() {
fHits = 0;
}
int hits() {
return fHits;
}
void before(const SkBitmap& bitmap) {
if (fCntExpectedTouched == 0) {
return;
}
for (int i = 0 ; i < fCntExpectedTouched; i++) {
fBeforeTouched[i] = pickColor(bitmap, fExpectedTouched[i].x(), fExpectedTouched[i].y());
}
for (int i = 0 ; i < fCntExpectedUntouched; i++) {
fBeforeUntouched[i] = pickColor(bitmap, fExpectedUntouched[i].x(), fExpectedUntouched[i].y());
}
}
// any/all of the expected touched has to be changed, and all expected untouched must be intact
void after(const SkBitmap& bitmap) {
if (fCntExpectedTouched == 0) {
return;
}
bool doBreak;
if (fBreakOnAny) {
doBreak = false;
for (int i = 0 ; i < fCntExpectedTouched; i++) {
doBreak = doBreak || fBeforeTouched[i] != pickColor(bitmap, fExpectedTouched[i].x(), fExpectedTouched[i].y());
}
} else {
doBreak = true;
for (int i = 0 ; i < fCntExpectedTouched; i++) {
doBreak = doBreak && fBeforeTouched[i] != pickColor(bitmap, fExpectedTouched[i].x(), fExpectedTouched[i].y());
}
}
for (int i = 0 ; i < fCntExpectedUntouched; i++) {
doBreak = doBreak && fBeforeUntouched[i] == pickColor(bitmap, fExpectedUntouched[i].x(), fExpectedUntouched[i].y());
}
if (doBreak) {
fHits++;
if (fEnabled) {
breakExecution();
}
}
}
private:
inline SkColor pickColor(const SkBitmap& bitmap, int x, int y) {
return bitmap.getColor(x, y);
}
void breakExecution() {
printf("break;\n");
}
inline bool found(int x, int y) {
for (int i = 0 ; i < fCntExpectedTouched; i++) {
if (x == fExpectedTouched[i].x() && y == fExpectedTouched[i].y()) {
return true;
}
}
for (int i = 0 ; i < fCntExpectedUntouched; i++) {
if (x == fExpectedUntouched[i].x() && y == fExpectedUntouched[i].y()) {
return true;
}
}
return false;
}
bool fEnabled;
// break on any change on expected touched or all.
bool fBreakOnAny;
SkIPoint fExpectedTouched[MAX_TRACKING_POINTS];
SkColor fBeforeTouched[MAX_TRACKING_POINTS];
int fCntExpectedTouched;
SkIPoint fExpectedUntouched[MAX_TRACKING_POINTS];
SkColor fBeforeUntouched[MAX_TRACKING_POINTS];
int fCntExpectedUntouched;
int fHits;
};
#endif // EXPERIMENTAL_PDFVIEWER_SKTRACKER_H_
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