BSHA3  0.17.99
P2P Blockchain, based on Bitcoin
receiverequestdialog.cpp
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1 // Copyright (c) 2011-2018 The Bitcoin Core developers
2 // Distributed under the MIT software license, see the accompanying
3 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
4 
5 #include <qt/receiverequestdialog.h>
6 #include <qt/forms/ui_receiverequestdialog.h>
7 
8 #include <qt/bitcoinunits.h>
9 #include <qt/guiconstants.h>
10 #include <qt/guiutil.h>
11 #include <qt/optionsmodel.h>
12 
13 #include <QClipboard>
14 #include <QDrag>
15 #include <QMenu>
16 #include <QMimeData>
17 #include <QMouseEvent>
18 #include <QPixmap>
19 
20 #if defined(HAVE_CONFIG_H)
21 #include <config/bitcoin-config.h> /* for USE_QRCODE */
22 #endif
23 
24 #ifdef USE_QRCODE
25 #include <qrencode.h>
26 #endif
27 
28 QRImageWidget::QRImageWidget(QWidget *parent):
29  QLabel(parent), contextMenu(0)
30 {
31  contextMenu = new QMenu(this);
32  QAction *saveImageAction = new QAction(tr("&Save Image..."), this);
33  connect(saveImageAction, &QAction::triggered, this, &QRImageWidget::saveImage);
34  contextMenu->addAction(saveImageAction);
35  QAction *copyImageAction = new QAction(tr("&Copy Image"), this);
36  connect(copyImageAction, &QAction::triggered, this, &QRImageWidget::copyImage);
37  contextMenu->addAction(copyImageAction);
38 }
39 
40 QImage QRImageWidget::exportImage()
41 {
42  if(!pixmap())
43  return QImage();
44  return pixmap()->toImage();
45 }
46 
47 void QRImageWidget::mousePressEvent(QMouseEvent *event)
48 {
49  if(event->button() == Qt::LeftButton && pixmap())
50  {
51  event->accept();
52  QMimeData *mimeData = new QMimeData;
53  mimeData->setImageData(exportImage());
54 
55  QDrag *drag = new QDrag(this);
56  drag->setMimeData(mimeData);
57  drag->exec();
58  } else {
59  QLabel::mousePressEvent(event);
60  }
61 }
62 
63 void QRImageWidget::saveImage()
64 {
65  if(!pixmap())
66  return;
67  QString fn = GUIUtil::getSaveFileName(this, tr("Save QR Code"), QString(), tr("PNG Image (*.png)"), nullptr);
68  if (!fn.isEmpty())
69  {
70  exportImage().save(fn);
71  }
72 }
73 
74 void QRImageWidget::copyImage()
75 {
76  if(!pixmap())
77  return;
78  QApplication::clipboard()->setImage(exportImage());
79 }
80 
81 void QRImageWidget::contextMenuEvent(QContextMenuEvent *event)
82 {
83  if(!pixmap())
84  return;
85  contextMenu->exec(event->globalPos());
86 }
87 
88 ReceiveRequestDialog::ReceiveRequestDialog(QWidget *parent) :
89  QDialog(parent),
90  ui(new Ui::ReceiveRequestDialog),
91  model(0)
92 {
93  ui->setupUi(this);
94 
95 #ifndef USE_QRCODE
96  ui->btnSaveAs->setVisible(false);
97  ui->lblQRCode->setVisible(false);
98 #endif
99 
100  connect(ui->btnSaveAs, &QPushButton::clicked, ui->lblQRCode, &QRImageWidget::saveImage);
101 }
102 
103 ReceiveRequestDialog::~ReceiveRequestDialog()
104 {
105  delete ui;
106 }
107 
108 void ReceiveRequestDialog::setModel(WalletModel *_model)
109 {
110  this->model = _model;
111 
112  if (_model)
113  connect(_model->getOptionsModel(), &OptionsModel::displayUnitChanged, this, &ReceiveRequestDialog::update);
114 
115  // update the display unit if necessary
116  update();
117 }
118 
119 void ReceiveRequestDialog::setInfo(const SendCoinsRecipient &_info)
120 {
121  this->info = _info;
122  update();
123 }
124 
125 void ReceiveRequestDialog::update()
126 {
127  if(!model)
128  return;
129  QString target = info.label;
130  if(target.isEmpty())
131  target = info.address;
132  setWindowTitle(tr("Request payment to %1").arg(target));
133 
134  QString uri = GUIUtil::formatBitcoinURI(info);
135  ui->btnSaveAs->setEnabled(false);
136  QString html;
137  html += "<html><font face='verdana, arial, helvetica, sans-serif'>";
138  html += "<b>"+tr("Payment information")+"</b><br>";
139  html += "<b>"+tr("URI")+"</b>: ";
140  html += "<a href=\""+uri+"\">" + GUIUtil::HtmlEscape(uri) + "</a><br>";
141  html += "<b>"+tr("Address")+"</b>: " + GUIUtil::HtmlEscape(info.address) + "<br>";
142  if(info.amount)
143  html += "<b>"+tr("Amount")+"</b>: " + BitcoinUnits::formatHtmlWithUnit(model->getOptionsModel()->getDisplayUnit(), info.amount) + "<br>";
144  if(!info.label.isEmpty())
145  html += "<b>"+tr("Label")+"</b>: " + GUIUtil::HtmlEscape(info.label) + "<br>";
146  if(!info.message.isEmpty())
147  html += "<b>"+tr("Message")+"</b>: " + GUIUtil::HtmlEscape(info.message) + "<br>";
148  if(model->isMultiwallet()) {
149  html += "<b>"+tr("Wallet")+"</b>: " + GUIUtil::HtmlEscape(model->getWalletName()) + "<br>";
150  }
151  ui->outUri->setText(html);
152 
153 #ifdef USE_QRCODE
154  ui->lblQRCode->setText("");
155  if(!uri.isEmpty())
156  {
157  // limit URI length
158  if (uri.length() > MAX_URI_LENGTH)
159  {
160  ui->lblQRCode->setText(tr("Resulting URI too long, try to reduce the text for label / message."));
161  } else {
162  QRcode *code = QRcode_encodeString(uri.toUtf8().constData(), 0, QR_ECLEVEL_L, QR_MODE_8, 1);
163  if (!code)
164  {
165  ui->lblQRCode->setText(tr("Error encoding URI into QR Code."));
166  return;
167  }
168  QImage qrImage = QImage(code->width + 8, code->width + 8, QImage::Format_RGB32);
169  qrImage.fill(0xffffff);
170  unsigned char *p = code->data;
171  for (int y = 0; y < code->width; y++)
172  {
173  for (int x = 0; x < code->width; x++)
174  {
175  qrImage.setPixel(x + 4, y + 4, ((*p & 1) ? 0x0 : 0xffffff));
176  p++;
177  }
178  }
179  QRcode_free(code);
180 
181  QImage qrAddrImage = QImage(QR_IMAGE_SIZE, QR_IMAGE_SIZE+20, QImage::Format_RGB32);
182  qrAddrImage.fill(0xffffff);
183  QPainter painter(&qrAddrImage);
184  painter.drawImage(0, 0, qrImage.scaled(QR_IMAGE_SIZE, QR_IMAGE_SIZE));
185  QFont font = GUIUtil::fixedPitchFont();
186  QRect paddedRect = qrAddrImage.rect();
187 
188  // calculate ideal font size
189  qreal font_size = GUIUtil::calculateIdealFontSize(paddedRect.width() - 20, info.address, font);
190  font.setPointSizeF(font_size);
191 
192  painter.setFont(font);
193  paddedRect.setHeight(QR_IMAGE_SIZE+12);
194  painter.drawText(paddedRect, Qt::AlignBottom|Qt::AlignCenter, info.address);
195  painter.end();
196 
197  ui->lblQRCode->setPixmap(QPixmap::fromImage(qrAddrImage));
198  ui->btnSaveAs->setEnabled(true);
199  }
200  }
201 #endif
202 }
203 
204 void ReceiveRequestDialog::on_btnCopyURI_clicked()
205 {
206  GUIUtil::setClipboard(GUIUtil::formatBitcoinURI(info));
207 }
208 
209 void ReceiveRequestDialog::on_btnCopyAddress_clicked()
210 {
211  GUIUtil::setClipboard(info.address);
212 }
GUIUtil::fixedPitchFont
QFont fixedPitchFont()
Definition: guiutil.cpp:75
QRImageWidget::QRImageWidget
QRImageWidget(QWidget *parent=0)
Definition: receiverequestdialog.cpp:28
QR_IMAGE_SIZE
#define QR_IMAGE_SIZE
Definition: guiconstants.h:44
BitcoinUnits::formatHtmlWithUnit
static QString formatHtmlWithUnit(int unit, const CAmount &amount, bool plussign=false, SeparatorStyle separators=separatorStandard)
Format as HTML string (with unit)
Definition: bitcoinunits.cpp:148
ReceiveRequestDialog::ui
Ui::ReceiveRequestDialog * ui
Definition: receiverequestdialog.h:64
GUIUtil::HtmlEscape
QString HtmlEscape(const QString &str, bool fMultiLine)
Definition: guiutil.cpp:216
ReceiveRequestDialog::info
SendCoinsRecipient info
Definition: receiverequestdialog.h:66
GUIUtil::formatBitcoinURI
QString formatBitcoinURI(const SendCoinsRecipient &info)
Definition: guiutil.cpp:180
OptionsModel::getDisplayUnit
int getDisplayUnit() const
Definition: optionsmodel.h:74
ReceiveRequestDialog::ReceiveRequestDialog
ReceiveRequestDialog(QWidget *parent=0)
Definition: receiverequestdialog.cpp:88
GUIUtil::calculateIdealFontSize
qreal calculateIdealFontSize(int width, const QString &text, QFont font, qreal minPointSize, qreal font_size)
Definition: guiutil.cpp:890
GUIUtil::setClipboard
void setClipboard(const QString &str)
Definition: guiutil.cpp:757
ReceiveRequestDialog::setInfo
void setInfo(const SendCoinsRecipient &info)
Definition: receiverequestdialog.cpp:119
WalletModel::getWalletName
QString getWalletName() const
Definition: walletmodel.cpp:576
OptionsModel::displayUnitChanged
void displayUnitChanged(int unit)
QRImageWidget::contextMenuEvent
virtual void contextMenuEvent(QContextMenuEvent *event)
Definition: receiverequestdialog.cpp:81
WalletModel
Interface to Bitcoin wallet from Qt view code.
Definition: walletmodel.h:125
GUIUtil::getSaveFileName
QString getSaveFileName(QWidget *parent, const QString &caption, const QString &dir, const QString &filter, QString *selectedSuffixOut)
Get save filename, mimics QFileDialog::getSaveFileName, except that it appends a default suffix when ...
Definition: guiutil.cpp:251
QRImageWidget::mousePressEvent
virtual void mousePressEvent(QMouseEvent *event)
Definition: receiverequestdialog.cpp:47
WalletModel::isMultiwallet
bool isMultiwallet()
Definition: walletmodel.cpp:581
WalletModel::getOptionsModel
OptionsModel * getOptionsModel()
Definition: walletmodel.cpp:307
ReceiveRequestDialog::setModel
void setModel(WalletModel *model)
Definition: receiverequestdialog.cpp:108
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