diff options
author | Wladimir J. van der Laan <laanwj@gmail.com> | 2019-05-06 09:40:01 +0200 |
---|---|---|
committer | Wladimir J. van der Laan <laanwj@gmail.com> | 2019-05-06 10:04:33 +0200 |
commit | 9bbaac73bb1f2a3836ed64b82b27360c427d1e4c (patch) | |
tree | 1032cdf0a1f52e1c7c3236fcd59a017f007137b5 /src/qt | |
parent | d7d7d315060620446bd363ca50f95f79d3260db7 (diff) | |
parent | fc929842c20ac81869a33edce765e389a46e6c0c (diff) | |
download | bitcoin-9bbaac73bb1f2a3836ed64b82b27360c427d1e4c.tar.xz |
Merge #15928: GUI: Move QRImageWidget to its own file-pair
fc929842c20ac81869a33edce765e389a46e6c0c GUI: Move QRImageWidget to its own file-pair (Luke Dashjr)
77851ab682bf94f78874a245919bcc4b79dc054e GUI: Refactor actual QR code rendering into new QRImageWidget::setQR (Luke Dashjr)
Pull request description:
For at least QR-code based pairing of mobile wallets with nodes, it will be desirable to render QR codes even without wallet support.
Therefore, this prepares by moving the QRImageWidget out of a wallet-specific file into its own `qrencoder` file-pair.
ACKs for commit fc9298:
laanwj:
utACK fc929842c20ac81869a33edce765e389a46e6c0c
jonasschnelli:
utACK fc929842c20ac81869a33edce765e389a46e6c0c
Tree-SHA512: 95529a38c0573a4b3f1253fb5f11ca07a5b3a9840ec24acc7d87270212f3c9f7c5b186d9274d297517a3b80494f38a57574fb9730b1574db01688539b987bd91
Diffstat (limited to 'src/qt')
-rw-r--r-- | src/qt/forms/receiverequestdialog.ui | 2 | ||||
-rw-r--r-- | src/qt/guiconstants.h | 6 | ||||
-rw-r--r-- | src/qt/qrimagewidget.cpp | 141 | ||||
-rw-r--r-- | src/qt/qrimagewidget.h | 45 | ||||
-rw-r--r-- | src/qt/receiverequestdialog.cpp | 120 | ||||
-rw-r--r-- | src/qt/receiverequestdialog.h | 30 |
6 files changed, 190 insertions, 154 deletions
diff --git a/src/qt/forms/receiverequestdialog.ui b/src/qt/forms/receiverequestdialog.ui index dbe966b241..9f896ee3b1 100644 --- a/src/qt/forms/receiverequestdialog.ui +++ b/src/qt/forms/receiverequestdialog.ui @@ -127,7 +127,7 @@ <customwidget> <class>QRImageWidget</class> <extends>QLabel</extends> - <header>qt/receiverequestdialog.h</header> + <header>qt/qrimagewidget.h</header> </customwidget> </customwidgets> <resources/> diff --git a/src/qt/guiconstants.h b/src/qt/guiconstants.h index 736ff13a4a..d8f5594983 100644 --- a/src/qt/guiconstants.h +++ b/src/qt/guiconstants.h @@ -37,12 +37,6 @@ static const bool DEFAULT_SPLASHSCREEN = true; */ static const int TOOLTIP_WRAP_THRESHOLD = 80; -/* Maximum allowed URI length */ -static const int MAX_URI_LENGTH = 255; - -/* QRCodeDialog -- size of exported QR Code image */ -#define QR_IMAGE_SIZE 300 - /* Number of frames in spinner animation */ #define SPINNER_FRAMES 36 diff --git a/src/qt/qrimagewidget.cpp b/src/qt/qrimagewidget.cpp new file mode 100644 index 0000000000..bf1baf5470 --- /dev/null +++ b/src/qt/qrimagewidget.cpp @@ -0,0 +1,141 @@ +// Copyright (c) 2011-2018 The Bitcoin Core developers +// Distributed under the MIT software license, see the accompanying +// file COPYING or http://www.opensource.org/licenses/mit-license.php. + +#include <qt/qrimagewidget.h> + +#include <qt/guiutil.h> + +#include <QApplication> +#include <QClipboard> +#include <QDrag> +#include <QMenu> +#include <QMimeData> +#include <QMouseEvent> +#include <QPainter> + +#if defined(HAVE_CONFIG_H) +#include <config/bitcoin-config.h> /* for USE_QRCODE */ +#endif + +#ifdef USE_QRCODE +#include <qrencode.h> +#endif + +QRImageWidget::QRImageWidget(QWidget *parent): + QLabel(parent), contextMenu(nullptr) +{ + contextMenu = new QMenu(this); + QAction *saveImageAction = new QAction(tr("&Save Image..."), this); + connect(saveImageAction, &QAction::triggered, this, &QRImageWidget::saveImage); + contextMenu->addAction(saveImageAction); + QAction *copyImageAction = new QAction(tr("&Copy Image"), this); + connect(copyImageAction, &QAction::triggered, this, &QRImageWidget::copyImage); + 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()) + return QImage(); + return pixmap()->toImage(); +} + +void QRImageWidget::mousePressEvent(QMouseEvent *event) +{ + if(event->button() == Qt::LeftButton && pixmap()) + { + event->accept(); + QMimeData *mimeData = new QMimeData; + mimeData->setImageData(exportImage()); + + QDrag *drag = new QDrag(this); + drag->setMimeData(mimeData); + drag->exec(); + } else { + QLabel::mousePressEvent(event); + } +} + +void QRImageWidget::saveImage() +{ + if(!pixmap()) + return; + QString fn = GUIUtil::getSaveFileName(this, tr("Save QR Code"), QString(), tr("PNG Image (*.png)"), nullptr); + if (!fn.isEmpty()) + { + exportImage().save(fn); + } +} + +void QRImageWidget::copyImage() +{ + if(!pixmap()) + return; + QApplication::clipboard()->setImage(exportImage()); +} + +void QRImageWidget::contextMenuEvent(QContextMenuEvent *event) +{ + if(!pixmap()) + return; + contextMenu->exec(event->globalPos()); +} diff --git a/src/qt/qrimagewidget.h b/src/qt/qrimagewidget.h new file mode 100644 index 0000000000..2a219ac101 --- /dev/null +++ b/src/qt/qrimagewidget.h @@ -0,0 +1,45 @@ +// Copyright (c) 2011-2018 The Bitcoin Core developers +// Distributed under the MIT software license, see the accompanying +// file COPYING or http://www.opensource.org/licenses/mit-license.php. + +#ifndef BITCOIN_QT_QRIMAGEWIDGET_H +#define BITCOIN_QT_QRIMAGEWIDGET_H + +#include <QImage> +#include <QLabel> + +/* Maximum allowed URI length */ +static const int MAX_URI_LENGTH = 255; + +/* Size of exported QR Code image */ +static const int QR_IMAGE_SIZE = 300; + +QT_BEGIN_NAMESPACE +class QMenu; +QT_END_NAMESPACE + +/* Label widget for QR code. This image can be dragged, dropped, copied and saved + * to disk. + */ +class QRImageWidget : public QLabel +{ + Q_OBJECT + +public: + explicit QRImageWidget(QWidget *parent = nullptr); + bool setQR(const QString& data, const QString& text = ""); + QImage exportImage(); + +public Q_SLOTS: + void saveImage(); + void copyImage(); + +protected: + virtual void mousePressEvent(QMouseEvent *event); + virtual void contextMenuEvent(QContextMenuEvent *event); + +private: + QMenu *contextMenu; +}; + +#endif // BITCOIN_QT_QRIMAGEWIDGET_H diff --git a/src/qt/receiverequestdialog.cpp b/src/qt/receiverequestdialog.cpp index f5b30cf6d2..20b29145a0 100644 --- a/src/qt/receiverequestdialog.cpp +++ b/src/qt/receiverequestdialog.cpp @@ -6,85 +6,17 @@ #include <qt/forms/ui_receiverequestdialog.h> #include <qt/bitcoinunits.h> -#include <qt/guiconstants.h> #include <qt/guiutil.h> #include <qt/optionsmodel.h> +#include <qt/qrimagewidget.h> #include <QClipboard> -#include <QDrag> -#include <QMenu> -#include <QMimeData> -#include <QMouseEvent> #include <QPixmap> #if defined(HAVE_CONFIG_H) #include <config/bitcoin-config.h> /* for USE_QRCODE */ #endif -#ifdef USE_QRCODE -#include <qrencode.h> -#endif - -QRImageWidget::QRImageWidget(QWidget *parent): - QLabel(parent), contextMenu(nullptr) -{ - contextMenu = new QMenu(this); - QAction *saveImageAction = new QAction(tr("&Save Image..."), this); - connect(saveImageAction, &QAction::triggered, this, &QRImageWidget::saveImage); - contextMenu->addAction(saveImageAction); - QAction *copyImageAction = new QAction(tr("&Copy Image"), this); - connect(copyImageAction, &QAction::triggered, this, &QRImageWidget::copyImage); - contextMenu->addAction(copyImageAction); -} - -QImage QRImageWidget::exportImage() -{ - if(!pixmap()) - return QImage(); - return pixmap()->toImage(); -} - -void QRImageWidget::mousePressEvent(QMouseEvent *event) -{ - if(event->button() == Qt::LeftButton && pixmap()) - { - event->accept(); - QMimeData *mimeData = new QMimeData; - mimeData->setImageData(exportImage()); - - QDrag *drag = new QDrag(this); - drag->setMimeData(mimeData); - drag->exec(); - } else { - QLabel::mousePressEvent(event); - } -} - -void QRImageWidget::saveImage() -{ - if(!pixmap()) - return; - QString fn = GUIUtil::getSaveFileName(this, tr("Save QR Code"), QString(), tr("PNG Image (*.png)"), nullptr); - if (!fn.isEmpty()) - { - exportImage().save(fn); - } -} - -void QRImageWidget::copyImage() -{ - if(!pixmap()) - return; - QApplication::clipboard()->setImage(exportImage()); -} - -void QRImageWidget::contextMenuEvent(QContextMenuEvent *event) -{ - if(!pixmap()) - return; - contextMenu->exec(event->globalPos()); -} - ReceiveRequestDialog::ReceiveRequestDialog(QWidget *parent) : QDialog(parent), ui(new Ui::ReceiveRequestDialog), @@ -150,55 +82,9 @@ 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..a6e1a2af16 100644 --- a/src/qt/receiverequestdialog.h +++ b/src/qt/receiverequestdialog.h @@ -8,41 +8,11 @@ #include <qt/walletmodel.h> #include <QDialog> -#include <QImage> -#include <QLabel> -#include <QPainter> namespace Ui { class ReceiveRequestDialog; } -QT_BEGIN_NAMESPACE -class QMenu; -QT_END_NAMESPACE - -/* Label widget for QR code. This image can be dragged, dropped, copied and saved - * to disk. - */ -class QRImageWidget : public QLabel -{ - Q_OBJECT - -public: - explicit QRImageWidget(QWidget *parent = nullptr); - QImage exportImage(); - -public Q_SLOTS: - void saveImage(); - void copyImage(); - -protected: - virtual void mousePressEvent(QMouseEvent *event); - virtual void contextMenuEvent(QContextMenuEvent *event); - -private: - QMenu *contextMenu; -}; - class ReceiveRequestDialog : public QDialog { Q_OBJECT |