Update CMakeLists.txt - play with openssl

[novacoin.git] / src / qt / qrcodedialog.cpp

diff --git a/src/qt/qrcodedialog.cpp b/src/qt/qrcodedialog.cpp
index 8295983..21a5f00 100644 (file)
--- a/src/qt/qrcodedialog.cpp
+++ b/src/qt/qrcodedialog.cpp
@@ -1,31 +1,35 @@
 #include "qrcodedialog.h"
 #include "ui_qrcodedialog.h"
+
+#include "bitcoinunits.h"
+#include "dialogwindowflags.h"
+#include "guiconstants.h"
 #include "guiutil.h"
+#include "optionsmodel.h"
 
 #include <QPixmap>
 #include <QUrl>
-#include <QDebug>
 
 #include <qrencode.h>
 
-#define EXPORT_IMAGE_SIZE   256
-
-QRCodeDialog::QRCodeDialog(const QString &title, const QString &addr, const QString &label, bool enableReq, QWidget *parent) :
-    QDialog(parent),
+QRCodeDialog::QRCodeDialog(const QString &addr, const QString &label, bool enableReq, QWidget *parent) :
+    QDialog(parent, DIALOGWINDOWHINTS),
     ui(new Ui::QRCodeDialog),
+    model(0),
     address(addr)
 {
     ui->setupUi(this);
-    setWindowTitle(title);
-    setAttribute(Qt::WA_DeleteOnClose);
 
-    ui->chkReq->setVisible(enableReq);
+    setWindowTitle(QString("%1").arg(address));
+
+    ui->chkReqPayment->setVisible(enableReq);
+    ui->lblAmount->setVisible(enableReq);
     ui->lnReqAmount->setVisible(enableReq);
-    ui->lblAm1->setVisible(enableReq);
-    ui->lblAm2->setVisible(enableReq);
 
     ui->lnLabel->setText(label);
 
+    ui->btnSaveAs->setEnabled(false);
+
     genCode();
 }
 
@@ -34,77 +38,135 @@ QRCodeDialog::~QRCodeDialog()
     delete ui;
 }
 
+void QRCodeDialog::setModel(OptionsModel *model)
+{
+    this->model = model;
+
+    if (model)
+        connect(model, SIGNAL(displayUnitChanged(int)), this, SLOT(updateDisplayUnit()));
+
+    // update the display unit, to not use the default ("BTC")
+    updateDisplayUnit();
+}
+
 void QRCodeDialog::genCode()
 {
     QString uri = getURI();
-    //qDebug() << "Encoding:" << uri.toUtf8().constData();
-    QRcode *code = QRcode_encodeString(uri.toUtf8().constData(), 0, QR_ECLEVEL_L, QR_MODE_8, 1);
-    myImage = QImage(code->width + 8, code->width + 8, QImage::Format_RGB32);
-    myImage.fill(0xffffff);
-    unsigned char *p = code->data;
-    for(int y = 0; y < code->width; y++) {
-        for(int x = 0; x < code->width; x++) {
-            myImage.setPixel(x + 4, y + 4, ((*p & 1) ? 0x0 : 0xffffff));
-            p++;
+
+    if (uri != "")
+    {
+        ui->lblQRCode->setText("");
+
+        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;
+        }
+        myImage = QImage(code->width + 8, code->width + 8, QImage::Format_RGB32);
+        myImage.fill(0xffffff);
+        unsigned char *p = code->data;
+        for (int y = 0; y < code->width; y++)
+        {
+            for (int x = 0; x < code->width; x++)
+            {
+                myImage.setPixel(x + 4, y + 4, ((*p & 1) ? 0x0 : 0xffffff));
+                p++;
+            }
         }
+        QRcode_free(code);
+
+        ui->lblQRCode->setPixmap(QPixmap::fromImage(myImage).scaled(300, 300));
+
+        ui->outUri->setPlainText(uri);
     }
-    QRcode_free(code);
-    ui->lblQRCode->setPixmap(QPixmap::fromImage(myImage).scaled(300, 300));
 }
 
 QString QRCodeDialog::getURI()
 {
-    QString ret = QString("bitcoin:%1").arg(address);
-
+    QString ret = QString("novacoin:%1").arg(address);
     int paramCount = 0;
-    if(ui->chkReq->isChecked() && ui->lnReqAmount->text().isEmpty() == false) {
-        bool ok= false;
-        double amount = ui->lnReqAmount->text().toDouble(&ok);
-        if(ok) {
-            ret += QString("?amount=%1X8").arg(ui->lnReqAmount->text());
+
+    ui->outUri->clear();
+
+    if (ui->chkReqPayment->isChecked())
+    {
+        if (ui->lnReqAmount->validate())
+        {
+            // even if we allow a non BTC unit input in lnReqAmount, we generate the URI with BTC as unit (as defined in BIP21)
+            ret += QString("?amount=%1").arg(BitcoinUnits::format(BitcoinUnits::BTC, ui->lnReqAmount->value()));
             paramCount++;
         }
+        else
+        {
+            ui->btnSaveAs->setEnabled(false);
+            ui->lblQRCode->setText(tr("The entered amount is invalid, please check."));
+            return QString("");
+        }
     }
 
-    if(ui->lnLabel->text().isEmpty() == false) {
+    if (!ui->lnLabel->text().isEmpty())
+    {
         QString lbl(QUrl::toPercentEncoding(ui->lnLabel->text()));
         ret += QString("%1label=%2").arg(paramCount == 0 ? "?" : "&").arg(lbl);
         paramCount++;
     }
 
-    if(ui->lnMessage->text().isEmpty() == false) {
+    if (!ui->lnMessage->text().isEmpty())
+    {
         QString msg(QUrl::toPercentEncoding(ui->lnMessage->text()));
         ret += QString("%1message=%2").arg(paramCount == 0 ? "?" : "&").arg(msg);
         paramCount++;
     }
 
+    // limit URI length to prevent a DoS against the QR-Code dialog
+    if (ret.length() > MAX_URI_LENGTH)
+    {
+        ui->btnSaveAs->setEnabled(false);
+        ui->lblQRCode->setText(tr("Resulting URI too long, try to reduce the text for label / message."));
+        return QString("");
+    }
+
+    ui->btnSaveAs->setEnabled(true);
     return ret;
 }
 
-void QRCodeDialog::on_lnReqAmount_textChanged(const QString &)
+void QRCodeDialog::on_lnReqAmount_textChanged()
 {
     genCode();
 }
 
-void QRCodeDialog::on_lnLabel_textChanged(const QString &)
+void QRCodeDialog::on_lnLabel_textChanged()
 {
     genCode();
 }
 
-void QRCodeDialog::on_lnMessage_textChanged(const QString &)
+void QRCodeDialog::on_lnMessage_textChanged()
 {
     genCode();
 }
 
 void QRCodeDialog::on_btnSaveAs_clicked()
 {
-    QString fn = GUIUtil::getSaveFileName(this, tr("Save Image..."), QString(), tr("PNG Images (*.png)"));
-    if(!fn.isEmpty()) {
+    QString fn = GUIUtil::getSaveFileName(this, tr("Save QR Code"), QString(), tr("PNG Images (*.png)"));
+    if (!fn.isEmpty())
         myImage.scaled(EXPORT_IMAGE_SIZE, EXPORT_IMAGE_SIZE).save(fn);
-    }
 }
 
-void QRCodeDialog::on_chkReq_toggled(bool)
+void QRCodeDialog::on_chkReqPayment_toggled(bool fChecked)
 {
+    if (!fChecked)
+        // if chkReqPayment is not active, don't display lnReqAmount as invalid
+        ui->lnReqAmount->setValid(true);
+
     genCode();
 }
+
+void QRCodeDialog::updateDisplayUnit()
+{
+    if (model)
+    {
+        // Update lnReqAmount with the current unit
+        ui->lnReqAmount->setDisplayUnit(model->getDisplayUnit());
+    }
+}