diff options
author | Luke Dashjr <luke-jr+git@utopios.org> | 2019-02-16 23:19:49 +0000 |
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committer | Luke Dashjr <luke-jr+git@utopios.org> | 2019-05-01 05:25:17 +0000 |
commit | 77851ab682bf94f78874a245919bcc4b79dc054e (patch) | |
tree | eb7526213d014cc07fc3c45e2e394fc004451aeb | |
parent | 37f236acc6de08745118ac6cb4268bb5206e67c6 (diff) |
GUI: Refactor actual QR code rendering into new QRImageWidget::setQR
-rw-r--r-- | src/qt/receiverequestdialog.cpp | 108 | ||||
-rw-r--r-- | src/qt/receiverequestdialog.h | 1 |
2 files changed, 61 insertions, 48 deletions
diff --git a/src/qt/receiverequestdialog.cpp b/src/qt/receiverequestdialog.cpp index f5b30cf6d2..6eb2171f1b 100644 --- a/src/qt/receiverequestdialog.cpp +++ b/src/qt/receiverequestdialog.cpp @@ -37,6 +37,64 @@ QRImageWidget::QRImageWidget(QWidget *parent): contextMenu->addAction(copyImageAction); } +bool QRImageWidget::setQR(const QString& data, const QString& text) +{ +#ifdef USE_QRCODE + setText(""); + if (data.isEmpty()) return false; + + // limit length + if (data.length() > MAX_URI_LENGTH) { + setText(tr("Resulting URI too long, try to reduce the text for label / message.")); + return false; + } + + QRcode *code = QRcode_encodeString(data.toUtf8().constData(), 0, QR_ECLEVEL_L, QR_MODE_8, 1); + + if (!code) { + setText(tr("Error encoding URI into QR Code.")); + return false; + } + + QImage qrImage = QImage(code->width + 8, code->width + 8, QImage::Format_RGB32); + qrImage.fill(0xffffff); + unsigned char *p = code->data; + for (int y = 0; y < code->width; ++y) { + for (int x = 0; x < code->width; ++x) { + qrImage.setPixel(x + 4, y + 4, ((*p & 1) ? 0x0 : 0xffffff)); + ++p; + } + } + QRcode_free(code); + + QImage qrAddrImage = QImage(QR_IMAGE_SIZE, QR_IMAGE_SIZE + (text.isEmpty() ? 0 : 20), QImage::Format_RGB32); + qrAddrImage.fill(0xffffff); + QPainter painter(&qrAddrImage); + painter.drawImage(0, 0, qrImage.scaled(QR_IMAGE_SIZE, QR_IMAGE_SIZE)); + + if (!text.isEmpty()) { + QFont font = GUIUtil::fixedPitchFont(); + QRect paddedRect = qrAddrImage.rect(); + + // calculate ideal font size + qreal font_size = GUIUtil::calculateIdealFontSize(paddedRect.width() - 20, text, font); + font.setPointSizeF(font_size); + + painter.setFont(font); + paddedRect.setHeight(QR_IMAGE_SIZE+12); + painter.drawText(paddedRect, Qt::AlignBottom|Qt::AlignCenter, text); + } + + painter.end(); + setPixmap(QPixmap::fromImage(qrAddrImage)); + + return true; +#else + setText(tr("QR code support not available.")); + return false; +#endif +} + QImage QRImageWidget::exportImage() { if(!pixmap()) @@ -150,55 +208,9 @@ void ReceiveRequestDialog::update() } ui->outUri->setText(html); -#ifdef USE_QRCODE - ui->lblQRCode->setText(""); - if(!uri.isEmpty()) - { - // limit URI length - if (uri.length() > MAX_URI_LENGTH) - { - ui->lblQRCode->setText(tr("Resulting URI too long, try to reduce the text for label / message.")); - } else { - QRcode *code = QRcode_encodeString(uri.toUtf8().constData(), 0, QR_ECLEVEL_L, QR_MODE_8, 1); - if (!code) - { - ui->lblQRCode->setText(tr("Error encoding URI into QR Code.")); - return; - } - QImage qrImage = QImage(code->width + 8, code->width + 8, QImage::Format_RGB32); - qrImage.fill(0xffffff); - unsigned char *p = code->data; - for (int y = 0; y < code->width; y++) - { - for (int x = 0; x < code->width; x++) - { - qrImage.setPixel(x + 4, y + 4, ((*p & 1) ? 0x0 : 0xffffff)); - p++; - } - } - QRcode_free(code); - - QImage qrAddrImage = QImage(QR_IMAGE_SIZE, QR_IMAGE_SIZE+20, QImage::Format_RGB32); - qrAddrImage.fill(0xffffff); - QPainter painter(&qrAddrImage); - painter.drawImage(0, 0, qrImage.scaled(QR_IMAGE_SIZE, QR_IMAGE_SIZE)); - QFont font = GUIUtil::fixedPitchFont(); - QRect paddedRect = qrAddrImage.rect(); - - // calculate ideal font size - qreal font_size = GUIUtil::calculateIdealFontSize(paddedRect.width() - 20, info.address, font); - font.setPointSizeF(font_size); - - painter.setFont(font); - paddedRect.setHeight(QR_IMAGE_SIZE+12); - painter.drawText(paddedRect, Qt::AlignBottom|Qt::AlignCenter, info.address); - painter.end(); - - ui->lblQRCode->setPixmap(QPixmap::fromImage(qrAddrImage)); - ui->btnSaveAs->setEnabled(true); - } + if (ui->lblQRCode->setQR(uri, info.address)) { + ui->btnSaveAs->setEnabled(true); } -#endif } void ReceiveRequestDialog::on_btnCopyURI_clicked() diff --git a/src/qt/receiverequestdialog.h b/src/qt/receiverequestdialog.h index dd28fd73c8..0e62c26fd3 100644 --- a/src/qt/receiverequestdialog.h +++ b/src/qt/receiverequestdialog.h @@ -29,6 +29,7 @@ class QRImageWidget : public QLabel public: explicit QRImageWidget(QWidget *parent = nullptr); + bool setQR(const QString& data, const QString& text = ""); QImage exportImage(); public Q_SLOTS: |