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// 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/receiverequestdialog.h>
#include <qt/forms/ui_receiverequestdialog.h>
#include <qt/bitcoinunits.h>
#include <qt/guiconstants.h>
#include <qt/guiutil.h>
#include <qt/optionsmodel.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(0)
{
contextMenu = new QMenu(this);
QAction *saveImageAction = new QAction(tr("&Save Image..."), this);
connect(saveImageAction, SIGNAL(triggered()), this, SLOT(saveImage()));
contextMenu->addAction(saveImageAction);
QAction *copyImageAction = new QAction(tr("&Copy Image"), this);
connect(copyImageAction, SIGNAL(triggered()), this, SLOT(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),
model(0)
{
ui->setupUi(this);
#ifndef USE_QRCODE
ui->btnSaveAs->setVisible(false);
ui->lblQRCode->setVisible(false);
#endif
connect(ui->btnSaveAs, SIGNAL(clicked()), ui->lblQRCode, SLOT(saveImage()));
}
ReceiveRequestDialog::~ReceiveRequestDialog()
{
delete ui;
}
void ReceiveRequestDialog::setModel(WalletModel *_model)
{
this->model = _model;
if (_model)
connect(_model->getOptionsModel(), SIGNAL(displayUnitChanged(int)), this, SLOT(update()));
// update the display unit if necessary
update();
}
void ReceiveRequestDialog::setInfo(const SendCoinsRecipient &_info)
{
this->info = _info;
update();
}
void ReceiveRequestDialog::update()
{
if(!model)
return;
QString target = info.label;
if(target.isEmpty())
target = info.address;
setWindowTitle(tr("Request payment to %1").arg(target));
QString uri = GUIUtil::formatBitcoinURI(info);
ui->btnSaveAs->setEnabled(false);
QString html;
html += "<html><font face='verdana, arial, helvetica, sans-serif'>";
html += "<b>"+tr("Payment information")+"</b><br>";
html += "<b>"+tr("URI")+"</b>: ";
html += "<a href=\""+uri+"\">" + GUIUtil::HtmlEscape(uri) + "</a><br>";
html += "<b>"+tr("Address")+"</b>: " + GUIUtil::HtmlEscape(info.address) + "<br>";
if(info.amount)
html += "<b>"+tr("Amount")+"</b>: " + BitcoinUnits::formatHtmlWithUnit(model->getOptionsModel()->getDisplayUnit(), info.amount) + "<br>";
if(!info.label.isEmpty())
html += "<b>"+tr("Label")+"</b>: " + GUIUtil::HtmlEscape(info.label) + "<br>";
if(!info.message.isEmpty())
html += "<b>"+tr("Message")+"</b>: " + GUIUtil::HtmlEscape(info.message) + "<br>";
if(model->isMultiwallet()) {
html += "<b>"+tr("Wallet")+"</b>: " + GUIUtil::HtmlEscape(model->getWalletName()) + "<br>";
}
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);
}
}
#endif
}
void ReceiveRequestDialog::on_btnCopyURI_clicked()
{
GUIUtil::setClipboard(GUIUtil::formatBitcoinURI(info));
}
void ReceiveRequestDialog::on_btnCopyAddress_clicked()
{
GUIUtil::setClipboard(info.address);
}
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