printing sale receipt

src/core/sale.cpp

@@ -34,6 +34,6 @@ int Sale::sumInCents()
 
 std::string Sale::sumAsString() { return formatCentAsEuroString(sumInCents()); }
 
-std::string Sale::getTimestamp() { return timestamp_; }
+std::string Sale::getTimestamp() const { return timestamp_; }
 
 void Sale::setTimestamp(const std::string& timestamp) { timestamp_ = timestamp; }

src/core/sale.h

@@ -21,7 +21,7 @@ class Sale : public Entity
     void setTimestamp(const std::string& timestamp);
 
     ArticlesVec& getArticles();
-    std::string getTimestamp();
+    std::string getTimestamp() const;
     int sumInCents();
     std::string sumAsString();
 
@@ -30,7 +30,7 @@ class Sale : public Entity
   private:
     std::string timestamp_{
         boost::posix_time::to_iso_extended_string(boost::posix_time::second_clock::local_time())};
-    ArticlesVec articles_{};
+    mutable ArticlesVec articles_{};
 };
 
 #endif

src/gui/mainwindow.cpp

@@ -10,6 +10,7 @@
 #include "settingsdialog.h"
 
 #include <excelreader.h>
+#include <posprinter.h>
 
 #include <exception>
 #include <regex>
@@ -48,6 +49,8 @@ MainWindow::MainWindow()
             &MainWindow::onCancelArticleButtonClicked);
     connect(ui_.cancelSaleButton, &QPushButton::clicked, this,
             &MainWindow::onCancelSaleButtonClicked);
+    connect(ui_.printSaleReceiptButton, &QPushButton::clicked, this,
+            &MainWindow::onPrintSaleReceiptButtonClicked);
     connect(ui_.cancelAllArticlesButton, &QPushButton::clicked, this,
             &MainWindow::onCancelAllArticlesButtonClicked);
     connect(ui_.aboutQtAction, &QAction::triggered, this, &MainWindow::onAboutQt);
@@ -169,8 +172,14 @@ void MainWindow::onSalesViewSelectionChanged(const QItemSelection& selected,
 {
     if (selected.size() > 0) {
         ui_.cancelSaleButton->setEnabled(true);
+        if (!selected.indexes()[0].parent().isValid())
+            ui_.printSaleReceiptButton->setEnabled(true);
+        else
+            ui_.printSaleReceiptButton->setEnabled(false);
+
     } else {
         ui_.cancelSaleButton->setEnabled(false);
+        ui_.printSaleReceiptButton->setEnabled(false);
     }
 }
 
@@ -220,6 +229,18 @@ void MainWindow::onCancelSaleButtonClicked([[maybe_unused]] bool checked)
     }
 }
 
+void MainWindow::onPrintSaleReceiptButtonClicked([[maybe_unused]] bool checked)
+{
+    auto selModel = ui_.salesView->selectionModel();
+    if (selModel->hasSelection() == false)
+        return;
+
+    auto indexes = selModel->selectedRows();
+    auto& sale = marketplace_->getSales().at(indexes[0].row());
+    PosPrinter printer;
+    printer.printReceipt(sale.get());
+}
+
 void MainWindow::onCancelAllArticlesButtonClicked([[maybe_unused]] bool checked)
 {
     if (ui_.basketView->model()->rowCount() == 0)

src/gui/mainwindow.h

@@ -24,6 +24,7 @@ class MainWindow : public QMainWindow
                                      const QItemSelection& deselected);
     void onCancelArticleButtonClicked(bool checked);
     void onCancelSaleButtonClicked(bool checked);
+    void onPrintSaleReceiptButtonClicked(bool checked);
     void onCancelAllArticlesButtonClicked(bool checked);
     void onAboutQt();
     void onAbout();

src/gui/mainwindow.ui

@@ -246,7 +246,7 @@ stornieren</string>
              </widget>
             </item>
             <item>
-             <widget class="QPushButton" name="pushButton_2">
+             <widget class="QPushButton" name="printSaleReceiptButton">
               <property name="enabled">
                <bool>false</bool>
               </property>

src/printer/CMakeLists.txt

@@ -9,5 +9,5 @@ set(PRINTER_SOURCES
 )
 
 add_library(printer STATIC ${PRINTER_SOURCES})
-target_link_libraries(printer ${LIBUSB_1_LIBRARIES})
+target_link_libraries(printer core ${LIBUSB_1_LIBRARIES})
 target_include_directories(printer PUBLIC ${CMAKE_CURRENT_SOURCE_DIR})

src/printer/posprinter.cpp

@@ -1,18 +1,19 @@
 #include "posprinter.h"
 
 #include <algorithm>
+#include <boost/algorithm/string.hpp>
 #include <exception>
 #include <iostream>
 #include <sstream>
 #include <string>
-#include <boost/algorithm/string.hpp>
 
 const std::string PosPrinter::Command::RESET = {0x1b, 0x40};
 const std::string PosPrinter::Command::ENCODING = {'\x1b', '\x74', 16};
 const std::string PosPrinter::Command::CENTERING = {'\x1b', '\x61', '\x01'};
+const std::string PosPrinter::Command::LEFT_ALIGN = {0x1b, 0x61, 0x00};
+const std::string PosPrinter::Command::RIGHT_ALIGN = {0x1b, 0x61, 0x02};
 const std::string PosPrinter::Command::FONT_SIZE_BIG = {'\x1b', '\x21', '\x10'};
 const std::string PosPrinter::Command::FONT_SIZE_NORMAL = {'\x1b', '\x21', '\x00'};
-const std::string PosPrinter::Command::LEFT_ALIGN = {'\x1b', '\x61', '\x00'};
 const std::string PosPrinter::Command::FEED = {0x1b, 0x64, 0x03};
 
 PosPrinter::PosPrinter()
@@ -25,7 +26,7 @@ PosPrinter::PosPrinter()
     }
 
 #if defined(_WIN32)
-    libusb_set_option(contextPtr_, LIBUSB_OPTION_USE_USBDK);
+    // libusb_set_option(contextPtr_, LIBUSB_OPTION_USE_USBDK);
 #endif
 
     libusb_device** devList;
@@ -126,7 +127,6 @@ void PosPrinter::printHeader()
 
 void PosPrinter::printTest()
 {
-    using namespace std::string_literals;
     std::stringstream commandStream;
     commandStream << Command::ENCODING;
     commandStream << "Der Drucker kann von KIMA2\nangesprochen werden.\n\n"
@@ -134,4 +134,21 @@ void PosPrinter::printTest()
     commandStream << Command::FEED;
     printHeader();
     write(commandStream.str());
+}
+
+void PosPrinter::printReceipt(Sale* sale)
+{
+    std::stringstream commandStream;
+    printHeader();
+    commandStream << Command::RESET << Command::ENCODING << Command::RIGHT_ALIGN;
+    commandStream << sale->getTimestamp() << "\n\n";
+    commandStream << Command::LEFT_ALIGN;
+    for(const auto& article : sale->getArticles()) {
+        commandStream << "Art. " << article->getCompleteArticleNo() << "........... " << article->getPriceAsString() << "\n";
+    }
+    commandStream << "\nGesamt................. " << sale->sumAsString() << "\n";
+    commandStream << Command::CENTERING;
+    commandStream << "\n\nVielen Dank für Ihren Einkauf!";
+    commandStream << Command::LEFT_ALIGN << Command::FEED;
+    write(commandStream.str());
 }

src/printer/posprinter.h

@@ -1,6 +1,8 @@
 #ifndef POS_PRINTER_H
 #define POS_PRINTER_H
 
+#include <sale.h>
+
 #include <memory>
 
 #include <libusb-1.0/libusb.h>
@@ -21,14 +23,16 @@ class PosPrinter
     void write(const std::string& text);
     void printHeader();
     void printTest();
+    void printReceipt(Sale* sale);
 
     struct Command {
         static const std::string RESET;
         static const std::string ENCODING;
         static const std::string CENTERING;
+        static const std::string LEFT_ALIGN;
+        static const std::string RIGHT_ALIGN;
         static const std::string FONT_SIZE_BIG;
         static const std::string FONT_SIZE_NORMAL;
-        static const std::string LEFT_ALIGN;
         static const std::string FEED;
     };