Dogecoin Core  1.14.2
P2P Digital Currency
receiverequestdialog.cpp
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1 // Copyright (c) 2011-2016 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 "receiverequestdialog.h"
6 #include "ui_receiverequestdialog.h"
7 
8 #include "bitcoinunits.h"
9 #include "guiconstants.h"
10 #include "guiutil.h"
11 #include "optionsmodel.h"
12 #include "walletmodel.h"
13 
14 #include <QClipboard>
15 #include <QDrag>
16 #include <QMenu>
17 #include <QMimeData>
18 #include <QMouseEvent>
19 #include <QPixmap>
20 #if QT_VERSION < 0x050000
21 #include <QUrl>
22 #endif
23 
24 #if defined(HAVE_CONFIG_H)
25 #include "config/bitcoin-config.h" /* for USE_QRCODE */
26 #endif
27 
28 #ifdef USE_QRCODE
29 #include <qrencode.h>
30 #endif
31 
32 QRImageWidget::QRImageWidget(QWidget *parent):
33  QLabel(parent), contextMenu(0)
34 {
35  contextMenu = new QMenu(this);
36  QAction *saveImageAction = new QAction(tr("&Save Image..."), this);
37  connect(saveImageAction, SIGNAL(triggered()), this, SLOT(saveImage()));
38  contextMenu->addAction(saveImageAction);
39  QAction *copyImageAction = new QAction(tr("&Copy Image"), this);
40  connect(copyImageAction, SIGNAL(triggered()), this, SLOT(copyImage()));
41  contextMenu->addAction(copyImageAction);
42 }
43 
44 QImage QRImageWidget::exportImage()
45 {
46  if(!pixmap())
47  return QImage();
48  return pixmap()->toImage();
49 }
50 
51 void QRImageWidget::mousePressEvent(QMouseEvent *event)
52 {
53  if(event->button() == Qt::LeftButton && pixmap())
54  {
55  event->accept();
56  QMimeData *mimeData = new QMimeData;
57  mimeData->setImageData(exportImage());
58 
59  QDrag *drag = new QDrag(this);
60  drag->setMimeData(mimeData);
61  drag->exec();
62  } else {
63  QLabel::mousePressEvent(event);
64  }
65 }
66 
67 void QRImageWidget::saveImage()
68 {
69  if(!pixmap())
70  return;
71  QString fn = GUIUtil::getSaveFileName(this, tr("Save QR Code"), QString(), tr("PNG Image (*.png)"), NULL);
72  if (!fn.isEmpty())
73  {
74  exportImage().save(fn);
75  }
76 }
77 
78 void QRImageWidget::copyImage()
79 {
80  if(!pixmap())
81  return;
82  QApplication::clipboard()->setImage(exportImage());
83 }
84 
85 void QRImageWidget::contextMenuEvent(QContextMenuEvent *event)
86 {
87  if(!pixmap())
88  return;
89  contextMenu->exec(event->globalPos());
90 }
91 
92 ReceiveRequestDialog::ReceiveRequestDialog(QWidget *parent) :
93  QDialog(parent),
94  ui(new Ui::ReceiveRequestDialog),
95  model(0)
96 {
97  ui->setupUi(this);
98 
99 #ifndef USE_QRCODE
100  ui->btnSaveAs->setVisible(false);
101  ui->lblQRCode->setVisible(false);
102 #endif
103 
104  connect(ui->btnSaveAs, SIGNAL(clicked()), ui->lblQRCode, SLOT(saveImage()));
105 }
106 
107 ReceiveRequestDialog::~ReceiveRequestDialog()
108 {
109  delete ui;
110 }
111 
112 void ReceiveRequestDialog::setModel(OptionsModel *_model)
113 {
114  this->model = _model;
115 
116  if (_model)
117  connect(_model, SIGNAL(displayUnitChanged(int)), this, SLOT(update()));
118 
119  // update the display unit if necessary
120  update();
121 }
122 
123 void ReceiveRequestDialog::setInfo(const SendCoinsRecipient &_info)
124 {
125  this->info = _info;
126  update();
127 }
128 
129 void ReceiveRequestDialog::update()
130 {
131  if(!model)
132  return;
133  QString target = info.label;
134  if(target.isEmpty())
135  target = info.address;
136  setWindowTitle(tr("Request payment to %1").arg(target));
137 
138  QString uri = GUIUtil::formatBitcoinURI(info);
139  ui->btnSaveAs->setEnabled(false);
140  QString html;
141  html += "<html><font face='verdana, arial, helvetica, sans-serif'>";
142  html += "<b>"+tr("Payment information")+"</b><br>";
143  html += "<b>"+tr("URI")+"</b>: ";
144  html += "<a href=\""+uri+"\">" + GUIUtil::HtmlEscape(uri) + "</a><br>";
145  html += "<b>"+tr("Address")+"</b>: " + GUIUtil::HtmlEscape(info.address) + "<br>";
146  if(info.amount)
147  html += "<b>"+tr("Amount")+"</b>: " + BitcoinUnits::formatHtmlWithUnit(model->getDisplayUnit(), info.amount) + "<br>";
148  if(!info.label.isEmpty())
149  html += "<b>"+tr("Label")+"</b>: " + GUIUtil::HtmlEscape(info.label) + "<br>";
150  if(!info.message.isEmpty())
151  html += "<b>"+tr("Message")+"</b>: " + GUIUtil::HtmlEscape(info.message) + "<br>";
152  ui->outUri->setText(html);
153 
154 #ifdef USE_QRCODE
155  ui->lblQRCode->setText("");
156  if(!uri.isEmpty())
157  {
158  // limit URI length
159  if (uri.length() > MAX_URI_LENGTH)
160  {
161  ui->lblQRCode->setText(tr("Resulting URI too long, try to reduce the text for label / message."));
162  } else {
163  QRcode *code = QRcode_encodeString(uri.toUtf8().constData(), 0, QR_ECLEVEL_L, QR_MODE_8, 1);
164  if (!code)
165  {
166  ui->lblQRCode->setText(tr("Error encoding URI into QR Code."));
167  return;
168  }
169  QImage qrImage = QImage(code->width + 8, code->width + 8, QImage::Format_RGB32);
170  qrImage.fill(0xffffff);
171  unsigned char *p = code->data;
172  for (int y = 0; y < code->width; y++)
173  {
174  for (int x = 0; x < code->width; x++)
175  {
176  qrImage.setPixel(x + 4, y + 4, ((*p & 1) ? 0x0 : 0xffffff));
177  p++;
178  }
179  }
180  QRcode_free(code);
181 
182  QImage qrAddrImage = QImage(QR_IMAGE_SIZE, QR_IMAGE_SIZE+20, QImage::Format_RGB32);
183  qrAddrImage.fill(0xffffff);
184  QPainter painter(&qrAddrImage);
185  painter.drawImage(0, 0, qrImage.scaled(QR_IMAGE_SIZE, QR_IMAGE_SIZE));
186  QFont font = GUIUtil::fixedPitchFont();
187  font.setPixelSize(12);
188  painter.setFont(font);
189  QRect paddedRect = qrAddrImage.rect();
190  paddedRect.setHeight(QR_IMAGE_SIZE+12);
191  painter.drawText(paddedRect, Qt::AlignBottom|Qt::AlignCenter, info.address);
192  painter.end();
193 
194  ui->lblQRCode->setPixmap(QPixmap::fromImage(qrAddrImage));
195  ui->btnSaveAs->setEnabled(true);
196  }
197  }
198 #endif
199 }
200 
201 void ReceiveRequestDialog::on_btnCopyURI_clicked()
202 {
203  GUIUtil::setClipboard(GUIUtil::formatBitcoinURI(info));
204 }
205 
206 void ReceiveRequestDialog::on_btnCopyAddress_clicked()
207 {
208  GUIUtil::setClipboard(info.address);
209 }
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:139
OptionsModel
Interface from Qt to configuration data structure for Bitcoin client.
Definition: optionsmodel.h:23
OptionsModel::getDisplayUnit
int getDisplayUnit()
Definition: optionsmodel.h:65
QRImageWidget::mousePressEvent
virtual void mousePressEvent(QMouseEvent *event)
Definition: receiverequestdialog.cpp:51
QRImageWidget::QRImageWidget
QRImageWidget(QWidget *parent=0)
Definition: receiverequestdialog.cpp:32
QRImageWidget::contextMenuEvent
virtual void contextMenuEvent(QContextMenuEvent *event)
Definition: receiverequestdialog.cpp:85
ReceiveRequestDialog::ui
Ui::ReceiveRequestDialog * ui
Definition: receiverequestdialog.h:66
ReceiveRequestDialog::setInfo
void setInfo(const SendCoinsRecipient &info)
Definition: receiverequestdialog.cpp:123
ReceiveRequestDialog::info
SendCoinsRecipient info
Definition: receiverequestdialog.h:68
ReceiveRequestDialog::setModel
void setModel(OptionsModel *model)
Definition: receiverequestdialog.cpp:112
ReceiveRequestDialog::ReceiveRequestDialog
ReceiveRequestDialog(QWidget *parent=0)
Definition: receiverequestdialog.cpp:92
QR_IMAGE_SIZE
#define QR_IMAGE_SIZE
Definition: guiconstants.h:46
GUIUtil::HtmlEscape
QString HtmlEscape(const QString &str, bool fMultiLine)
Definition: guiutil.cpp:255
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:294
GUIUtil::formatBitcoinURI
QString formatBitcoinURI(const SendCoinsRecipient &info)
Definition: guiutil.cpp:219
GUIUtil::setClipboard
void setClipboard(const QString &str)
Definition: guiutil.cpp:852
GUIUtil::fixedPitchFont
QFont fixedPitchFont()
Definition: guiutil.cpp:96
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