1 #include "qrcodedialog.h"
2 #include "ui_qrcodedialog.h"
11 #define EXPORT_IMAGE_SIZE 256
13 QRCodeDialog::QRCodeDialog(const QString &addr, const QString &label, bool enableReq, QWidget *parent) :
14 QDialog(parent), ui(new Ui::QRCodeDialog), address(addr)
17 setWindowTitle(QString("%1").arg(address));
18 setAttribute(Qt::WA_DeleteOnClose);
20 ui->chkReqPayment->setVisible(enableReq);
21 ui->lnReqAmount->setVisible(enableReq);
22 ui->lblAmount->setVisible(enableReq);
23 ui->lblBTC->setVisible(enableReq);
25 ui->lnLabel->setText(label);
30 QRCodeDialog::~QRCodeDialog()
35 void QRCodeDialog::genCode()
37 QString uri = getURI();
41 ui->lblQRCode->setText("");
43 QRcode *code = QRcode_encodeString(uri.toUtf8().constData(), 0, QR_ECLEVEL_L, QR_MODE_8, 1);
44 myImage = QImage(code->width + 8, code->width + 8, QImage::Format_RGB32);
45 myImage.fill(0xffffff);
46 unsigned char *p = code->data;
47 for (int y = 0; y < code->width; y++)
49 for (int x = 0; x < code->width; x++)
51 myImage.setPixel(x + 4, y + 4, ((*p & 1) ? 0x0 : 0xffffff));
56 ui->lblQRCode->setPixmap(QPixmap::fromImage(myImage).scaled(300, 300));
59 ui->lblQRCode->setText(tr("Resulting URI too long, try to reduce the text for label / message."));
62 QString QRCodeDialog::getURI()
64 QString ret = QString("bitcoin:%1").arg(address);
67 if (ui->chkReqPayment->isChecked() && !ui->lnReqAmount->text().isEmpty())
70 ui->lnReqAmount->text().toDouble(&ok);
73 ret += QString("?amount=%1").arg(ui->lnReqAmount->text());
78 if (!ui->lnLabel->text().isEmpty())
80 QString lbl(QUrl::toPercentEncoding(ui->lnLabel->text()));
81 ret += QString("%1label=%2").arg(paramCount == 0 ? "?" : "&").arg(lbl);
85 if (!ui->lnMessage->text().isEmpty())
87 QString msg(QUrl::toPercentEncoding(ui->lnMessage->text()));
88 ret += QString("%1message=%2").arg(paramCount == 0 ? "?" : "&").arg(msg);
92 // limit URI length to 255 chars, to prevent a DoS against the QR-Code dialog
93 if (ret.length() < 256)
99 void QRCodeDialog::on_lnReqAmount_textChanged(const QString &arg1)
104 void QRCodeDialog::on_lnLabel_textChanged(const QString &arg1)
109 void QRCodeDialog::on_lnMessage_textChanged(const QString &arg1)
114 void QRCodeDialog::on_btnSaveAs_clicked()
116 QString fn = GUIUtil::getSaveFileName(this, tr("Save Image..."), QString(), tr("PNG Images (*.png)"));
118 myImage.scaled(EXPORT_IMAGE_SIZE, EXPORT_IMAGE_SIZE).save(fn);
121 void QRCodeDialog::on_chkReqPayment_toggled(bool)