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Add getting barcode region and sending it in advanced signal

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This commit is contained in:
Aleksey Lysenko 2016-09-19 11:44:53 +03:00
parent 243c4dbef2
commit 30f6f70e3e
2 changed files with 76 additions and 2 deletions
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2
src/QZXing.h
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@ -170,7 +170,7 @@ signals:
void decodingFinished(bool succeeded);
void tagFound(QString tag);
void enabledFormatsChanged();
void tagFoundAdvanced(QString tag, QString format, QString charSet);
void tagFoundAdvanced(const QString &tag, const QString &format, const QString &charSet, const QRectF &rect) const;
void error(QString msg);
private:

76
src/qzxing.cpp
View File

@ -11,6 +11,7 @@
#include <QUrl>
#include <zxing/qrcode/encoder/Encoder.h>
#include <zxing/qrcode/ErrorCorrectionLevel.h>
#include <zxing/common/detector/WhiteRectangleDetector.h>
#include <QColor>
using namespace zxing;
@ -185,6 +186,77 @@ void QZXing::setDecoder(const uint &hint)
emit enabledFormatsChanged();
}
/*!
* \brief getTagRec - returns rectangle containing the tag.
*
* To be able display tag rectangle regardless of the size of the bit matrix rect is in related coordinates [0; 1].
* \param resultPoints
* \param bitMatrix
* \return
*/
QRectF getTagRect(const ArrayRef<Ref<ResultPoint> > &resultPoints, const Ref<BitMatrix> &bitMatrix)
{
if (resultPoints->size() < 2)
return QRectF();
int matrixWidth = bitMatrix->getWidth();
int matrixHeight = bitMatrix->getHeight();
// 1D barcode
if (resultPoints->size() == 2) {
WhiteRectangleDetector detector(bitMatrix);
std::vector<Ref<ResultPoint> > resultRectPoints = detector.detect();
if (resultRectPoints.size() != 4)
return QRectF();
qreal xMin = resultPoints[0]->getX();
qreal xMax = xMin;
for (unsigned int i = 1; i < resultPoints->size(); ++i) {
qreal x = resultPoints[i]->getX();
if (x < xMin)
xMin = x;
if (x > xMax)
xMax = x;
}
qreal yMin = resultRectPoints[0]->getY();
qreal yMax = yMin;
for (unsigned int i = 1; i < resultRectPoints.size(); ++i) {
qreal y = resultRectPoints[i]->getY();
if (y < yMin)
yMin = y;
if (y > yMax)
yMax = y;
}
return QRectF(QPointF(xMin / matrixWidth, yMax / matrixHeight), QPointF(xMax / matrixWidth, yMin / matrixHeight));
}
// 2D QR code
if (resultPoints->size() == 4) {
qreal xMin = resultPoints[0]->getX();
qreal xMax = xMin;
qreal yMin = resultPoints[0]->getY();
qreal yMax = yMin;
for (unsigned int i = 1; i < resultPoints->size(); ++i) {
qreal x = resultPoints[i]->getX();
qreal y = resultPoints[i]->getY();
if (x < xMin)
xMin = x;
if (x > xMax)
xMax = x;
if (y < yMin)
yMin = y;
if (y > yMax)
yMax = y;
}
return QRectF(QPointF(xMin / matrixWidth, yMax / matrixHeight), QPointF(xMax / matrixWidth, yMin / matrixHeight));
}
return QRectF();
}
QString QZXing::decodeImage(const QImage &image, int maxWidth, int maxHeight, bool smoothTransformation)
{
QTime t;
@ -256,7 +328,9 @@ QString QZXing::decodeImage(const QImage &image, int maxWidth, int maxHeight, bo
string = codec->toUnicode(res->getText()->getText().c_str());
}
emit tagFound(string);
emit tagFoundAdvanced(string, foundedFmt, charSet_);
const QRectF rect = getTagRect(res->getResultPoints(), binz->getBlackMatrix());
emit tagFoundAdvanced(string, foundedFmt, charSet_, rect);
}
processingTime = t.elapsed();
emit decodingFinished(true);