save qrcode to file

pages/Receive.qml

@@ -358,6 +358,32 @@ Rectangle {
             standardButtons: StandardButton.Ok
         }
 
+        FileDialog {
+            id: qrFileDialog
+            title: "Please choose a name"
+            folder: shortcuts.pictures
+            selectExisting: false
+            nameFilters: [ "Image (*.png)"]
+            onAccepted: {
+                if( ! walletManager.saveQrCode(makeQRCodeString(), walletManager.urlToLocalPath(fileUrl))) {
+                    console.log("Failed to save QrCode to file " + walletManager.urlToLocalPath(fileUrl) )
+                    trackingHowToUseDialog.title  = qsTr("Save QrCode") + translationManager.emptyString;
+                    trackingHowToUseDialog.text = qsTr("Failed to save QrCode to ") + walletManager.urlToLocalPath(fileUrl) + translationManager.emptyString;
+                    trackingHowToUseDialog.icon = StandardIcon.Error
+                    trackingHowToUseDialog.open()
+                }
+            }
+        }
+
+        Menu {
+            id: qrMenu
+            title: "QrCode"
+            MenuItem {
+               text: qsTr("Save As")
+               onTriggered: qrFileDialog.open()
+            }
+        }
+
         Image {
             id: qrCode
             anchors.margins: 50
@@ -367,6 +393,15 @@ Rectangle {
             smooth: false
             fillMode: Image.PreserveAspectFit
             source: "image://qrcode/" + makeQRCodeString()
+            MouseArea {
+                anchors.fill: parent
+                acceptedButtons: Qt.RightButton
+                onClicked: {
+                    if (mouse.button == Qt.RightButton)
+                        qrMenu.popup()
+                }
+                onPressAndHold: qrFileDialog.open()
+            }
         }
     }
 

src/libwalletqt/QRCodeImageProvider.cpp

@@ -2,7 +2,7 @@
 
 #include "QRCodeImageProvider.h"
 
-QImage QRCodeImageProvider::requestImage(const QString &id, QSize *size, const QSize &requestedSize)
+QImage QRCodeImageProvider::genQrImage(const QString &id, QSize *size)
 {
   using namespace qrcodegen;
 
@@ -15,3 +15,8 @@ QImage QRCodeImageProvider::requestImage(const QString &id, QSize *size, const Q
     *size = QSize(qrcode.size, qrcode.size);
   return img;
 }
+
+QImage QRCodeImageProvider::requestImage(const QString &id, QSize *size, const QSize &/* requestedSize */)
+{
+  return genQrImage(id, size);
+}

src/libwalletqt/QRCodeImageProvider.h

@@ -7,5 +7,6 @@ public:
   QRCodeImageProvider(): QQuickImageProvider(QQuickImageProvider::Image) {}
 
   QImage requestImage(const QString &id, QSize *size, const QSize &requestedSize);
+  static QImage genQrImage(const QString &id, QSize *size);
 };
 

src/libwalletqt/WalletManager.cpp

@@ -2,6 +2,7 @@
 #include "Wallet.h"
 #include "wallet/wallet2_api.h"
 #include "zxcvbn-c/zxcvbn.h"
+#include "QRCodeImageProvider.h"
 #include <QFile>
 #include <QFileInfo>
 #include <QDir>
@@ -291,6 +292,13 @@ double WalletManager::getPasswordStrength(const QString &password) const
     return e;
 }
 
+bool WalletManager::saveQrCode(const QString &code, const QString &path) const
+{
+    QSize size;
+    // 240 <=> mainLayout.qrCodeSize (Receive.qml)
+    return QRCodeImageProvider::genQrImage(code, &size).scaled(size.expandedTo(QSize(240, 240)), Qt::KeepAspectRatio).save(path, "PNG", 100);
+}
+
 WalletManager::WalletManager(QObject *parent) : QObject(parent)
 {
     m_pimpl =  Monero::WalletManagerFactory::getWalletManager();

src/libwalletqt/WalletManager.h

@@ -123,6 +123,7 @@ public:
 
     Q_INVOKABLE QString resolveOpenAlias(const QString &address) const;
     Q_INVOKABLE bool parse_uri(const QString &uri, QString &address, QString &payment_id, uint64_t &amount, QString &tx_description, QString &recipient_name, QVector<QString> &unknown_parameters, QString &error);
+    Q_INVOKABLE bool saveQrCode(const QString &, const QString &) const;
 
 signals: