Basic home screen + other improvements

functions.h

@@ -19,6 +19,7 @@
 #include <QJsonObject>
 #include <QJsonValue>
 #include <QJsonArray>
+#include <QCryptographicHash>
 
 #include <stdio.h>
 #include <fcntl.h>
@@ -52,6 +53,7 @@ namespace global {
     namespace mainwindow {
         namespace tabSwitcher {
             inline bool repaint;
+            inline bool homePageWidgetCreated;
             inline bool appsWidgetCreated;
             inline bool appsWidgetSelected;
             inline bool settingsChooserWidgetCreated;
@@ -127,6 +129,7 @@ namespace global {
     namespace localLibrary {
         static inline QString rawDatabasePath = "/inkbox/LocalLibrary.db.raw";
         static inline QString databasePath = "/mnt/onboard/onboard/.inkbox/LocalLibrary.db";
+        static inline QString recentBooksDatabasePath = "/mnt/onboard/onboard/.inkbox/RecentBooks.db";
     }
     namespace localStorage {
         inline QStringList searchResultsPaths;
@@ -135,11 +138,14 @@ namespace global {
         inline bool status;
     }
     namespace userApps {
-       inline bool appCompatibilityDialog;
+        inline bool appCompatibilityDialog;
-       inline QString appCompatibilityText;
+        inline QString appCompatibilityText;
-       inline bool appCompatibilityLastContinueStatus = true; // This is for RequiredFeatures to show only one dialog if 'Cancel' is clicked.
+        inline bool appCompatibilityLastContinueStatus = true; // This is for RequiredFeatures to show only one dialog if 'Cancel' is clicked.
-       inline bool appInfoDialog;
+        inline bool appInfoDialog;
-       inline bool launchApp;
+        inline bool launchApp;
+    }
+    namespace homePageWidget {
+        inline int recentBooksNumber = 4;
     }
     inline QString systemInfoText;
     inline bool forbidOpenSearchDialog;
@@ -959,6 +965,15 @@ namespace {
             }
         }
     }
+    QByteArray fileChecksum(const QString &fileName, QCryptographicHash::Algorithm hashAlgorithm) {
+        QFile f(fileName);
+        if (f.open(QFile::ReadOnly)) {
+            QCryptographicHash hash(hashAlgorithm);
+            if (hash.addData(&f)) {
+                return hash.result();
+            }
+        }
+    }
 }
 
 #endif // FUNCTIONS_H

homepagewidget.cpp

@@ -0,0 +1,117 @@
+#include "homepagewidget.h"
+#include "ui_homepagewidget.h"
+
+#include <QScreen>
+
+#include "functions.h"
+
+homePageWidget::homePageWidget(QWidget *parent) :
+    QWidget(parent),
+    ui(new Ui::homePageWidget)
+{
+    ui->setupUi(this);
+
+    verticalLayoutArray.resize(global::homePageWidget::recentBooksNumber);
+    bookBtnArray.resize(global::homePageWidget::recentBooksNumber);
+    bookTitleArray.resize(global::homePageWidget::recentBooksNumber);
+
+    // Getting the screen's size
+    sW = QGuiApplication::screens()[0]->size().width();
+    sH = QGuiApplication::screens()[0]->size().height();
+
+    if(global::deviceID == "n705\n" or global::deviceID == "n905\n" or global::deviceID == "kt\n") {
+        stdIconWidthDivider = 8;
+        stdIconHeightDivider = 8;
+        stdIconWidth = sW / stdIconWidthDivider;
+        stdIconHeight = sH / stdIconHeightDivider;
+    }
+    else if(global::deviceID == "n613\n" or global::deviceID == "n236\n" or global::deviceID == "n306\n") {
+        stdIconWidthDivider = 7;
+        stdIconHeightDivider = 7;
+        stdIconWidth = sW / stdIconWidthDivider;
+        stdIconWidth = sH / stdIconHeightDivider;
+    }
+    else if(global::deviceID == "n437\n") {
+        stdIconWidthDivider = 6.5;
+        stdIconHeightDivider = 6.5;
+        stdIconWidth = sW / stdIconWidthDivider;
+        stdIconHeight = sH / stdIconHeightDivider;
+    }
+    else if(global::deviceID == "n873\n") {
+        stdIconWidthDivider = 6;
+        stdIconHeightDivider = 6;
+        stdIconWidth = sW / stdIconWidthDivider;
+        stdIconHeight = sH / stdIconHeightDivider;
+    }
+    else {
+        stdIconWidthDivider = 8;
+        stdIconHeightDivider = 8;
+        stdIconWidth = sW / stdIconWidthDivider;
+        stdIconHeight = sH / stdIconHeightDivider;
+    }
+
+    log("Reading database", className);
+    QFile database(global::localLibrary::databasePath);
+    QByteArray data;
+    if(database.open(QIODevice::ReadOnly)) {
+        data = database.readAll();
+        database.close();
+    }
+    else {
+        QString function = __func__; log(function + ": Failed to open local library database file for reading at '" + database.fileName() + "'", className);
+    }
+
+    QJsonObject databaseJsonObject = QJsonDocument::fromJson(qUncompress(QByteArray::fromBase64(data))).object();
+    QJsonArray databaseJsonArrayList = databaseJsonObject["database"].toArray();
+    int databaseBooksNumber = databaseJsonArrayList.size();
+    QJsonObject recentBooksJsonObject = QJsonDocument::fromJson(readFile(global::localLibrary::recentBooksDatabasePath).toUtf8()).object();
+
+    log("Setting up home page", className);
+
+    for(int i = 1; i <= global::homePageWidget::recentBooksNumber; i++) {
+        QString objectName = "Book" + QString::number(i);
+        QJsonObject jsonObject = recentBooksJsonObject[objectName].toObject();
+        QString bookPath = jsonObject.value("BookPath").toString();
+        bookBtnArray[i] = new QClickableLabel(this);
+
+        // Iterate until we find a book matching the recently opened book's "BookPath" key/value pair
+        for(int in = i; in <= databaseBooksNumber; in++) {
+            QJsonObject bookJsonObject = databaseJsonArrayList.at(in - 1).toObject();
+            if(bookJsonObject["BookPath"] == bookPath) {
+                bookBtnArray[i]->setObjectName(QJsonDocument(bookJsonObject).toJson());
+            }
+        }
+
+        verticalLayoutArray[i] = new QVBoxLayout(this);
+
+        QObject::connect(bookBtnArray[i], &QClickableLabel::bookPath, this, &homePageWidget::openBook);
+        bookBtnArray[i]->setAlignment(Qt::AlignCenter);
+        bookBtnArray[i]->setFont(QFont("u001"));
+        bookBtnArray[i]->setStyleSheet("color: black; background-color: white; border-radius: 10px; padding: 10px");
+
+        QString bookIcon = QJsonDocument::fromJson(bookBtnArray[i]->objectName().toUtf8()).object()["CoverPath"].toString();
+        if(QFile::exists(bookIcon)) {
+            bookBtnArray[i]->setPixmap(QPixmap(bookIcon).scaled(stdIconWidth, stdIconHeight, Qt::KeepAspectRatio));
+        }
+        else {
+            bookBtnArray[i]->setPixmap(QPixmap(":/resources/cover_unavailable").scaled(stdIconWidth, stdIconHeight, Qt::KeepAspectRatio));
+        }
+
+        verticalLayoutArray[i]->addWidget(bookBtnArray[i]);
+        ui->horizontalLayout->addLayout(verticalLayoutArray[i]);
+    }
+    QTimer::singleShot(500, this, SLOT(refreshScreenNative()));
+}
+
+homePageWidget::~homePageWidget()
+{
+    delete ui;
+}
+
+void homePageWidget::openBook(QString bookPath) {
+    emit openBookSignal(bookPath, false);
+}
+
+void homePageWidget::refreshScreenNative() {
+    emit refreshScreen();
+}

homepagewidget.h

@@ -0,0 +1,42 @@
+#ifndef HOMEPAGEWIDGET_H
+#define HOMEPAGEWIDGET_H
+
+#include <QWidget>
+#include <QVBoxLayout>
+#include "qclickablelabel.h"
+
+namespace Ui {
+class homePageWidget;
+}
+
+class homePageWidget : public QWidget
+{
+    Q_OBJECT
+
+public:
+    QString className = this->metaObject()->className();
+    explicit homePageWidget(QWidget *parent = nullptr);
+    ~homePageWidget();
+    int sW;
+    int sH;
+    int stdIconWidth;
+    int stdIconHeight;
+    float stdIconWidthDivider;
+    float stdIconHeightDivider;
+
+signals:
+    void openBookSignal(QString bookPath, bool relativePath);
+    void refreshScreen();
+
+private slots:
+    void openBook(QString bookPath);
+    void refreshScreenNative();
+
+private:
+    Ui::homePageWidget *ui;
+    QVector<QLabel*> bookTitleArray;
+    QVector<QVBoxLayout*> verticalLayoutArray;
+    QVector<QClickableLabel*> bookBtnArray;
+};
+
+#endif // HOMEPAGEWIDGET_H

homepagewidget.ui

@@ -0,0 +1,76 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>homePageWidget</class>
+ <widget class="QWidget" name="homePageWidget">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>400</width>
+    <height>300</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Form</string>
+  </property>
+  <layout class="QVBoxLayout" name="verticalLayout">
+   <property name="leftMargin">
+    <number>0</number>
+   </property>
+   <property name="topMargin">
+    <number>0</number>
+   </property>
+   <property name="rightMargin">
+    <number>0</number>
+   </property>
+   <property name="bottomMargin">
+    <number>0</number>
+   </property>
+   <item>
+    <widget class="QLabel" name="label">
+     <property name="sizePolicy">
+      <sizepolicy hsizetype="Minimum" vsizetype="Maximum">
+       <horstretch>0</horstretch>
+       <verstretch>0</verstretch>
+      </sizepolicy>
+     </property>
+     <property name="font">
+      <font>
+       <family>Inter</family>
+       <weight>75</weight>
+       <bold>true</bold>
+      </font>
+     </property>
+     <property name="text">
+      <string>Continue reading</string>
+     </property>
+     <property name="alignment">
+      <set>Qt::AlignLeading|Qt::AlignLeft|Qt::AlignVCenter</set>
+     </property>
+    </widget>
+   </item>
+   <item>
+    <layout class="QHBoxLayout" name="horizontalLayout">
+     <property name="topMargin">
+      <number>25</number>
+     </property>
+    </layout>
+   </item>
+   <item>
+    <spacer name="verticalSpacer">
+     <property name="orientation">
+      <enum>Qt::Vertical</enum>
+     </property>
+     <property name="sizeHint" stdset="0">
+      <size>
+       <width>20</width>
+       <height>40</height>
+      </size>
+     </property>
+    </spacer>
+   </item>
+  </layout>
+ </widget>
+ <resources/>
+ <connections/>
+</ui>

inkbox.pro

@@ -32,6 +32,7 @@ SOURCES += \
     dictionarywidget.cpp \
     encryptionmanager.cpp \
     generaldialog.cpp \
+    homepagewidget.cpp \
     hourglassanimationwidget.cpp \
     koboxappsdialog.cpp \
     koboxsettings.cpp \
@@ -65,6 +66,7 @@ HEADERS += \
     encryptionmanager.h \
     functions.h \
     generaldialog.h \
+    homepagewidget.h \
     hourglassanimationwidget.h \
     koboxappsdialog.h \
     koboxsettings.h \
@@ -96,6 +98,7 @@ FORMS += \
     dictionarywidget.ui \
     encryptionmanager.ui \
     generaldialog.ui \
+    homepagewidget.ui \
     hourglassanimationwidget.ui \
     koboxappsdialog.ui \
     koboxsettings.ui \

locallibrarywidget.cpp

@@ -18,6 +18,7 @@ localLibraryWidget::localLibraryWidget(QWidget *parent) :
     ui->previousPageBtn->setIcon(QIcon(":/resources/chevron-left.png"));
     ui->nextPageBtn->setIcon(QIcon(":/resources/chevron-right.png"));
     ui->pageNumberLabel->setFont(QFont("Source Serif Pro"));
+    ui->pageNumberLabel->setStyleSheet("color: black; background-color: white; border-radius: 10px; padding-left: 10px; padding-right: 10px");
     ui->verticalLayout->setSpacing(4);
 
     if(global::deviceID == "n705\n") {
@@ -146,7 +147,7 @@ void localLibraryWidget::setupDatabase() {
 
         QString prog("busybox-initrd");
         QStringList args;
-        args << "env" << "icon_width_divider=" + QString::number(stdIconWidthDivider) << "icon_height_divider=" + QString::number(stdIconHeightDivider) << "./explore_local_library.sh" << booksList;
+        args << "env" << "icon_width_divider=" + QString::number(stdIconWidthDivider - 1.5) << "icon_height_divider=" + QString::number(stdIconHeightDivider - 1.5) << "./explore_local_library.sh" << booksList;
         QProcess *proc = new QProcess();
         proc->start(prog, args);
         proc->waitForFinished();
@@ -210,7 +211,7 @@ void localLibraryWidget::setupBooksList(int pageNumber) {
         if(!coverPath.isEmpty()) {
             // Display book cover if found
             QPixmap pixmap(coverPath);
-            bookIconArray[in]->setPixmap(pixmap);
+            bookIconArray[in]->setPixmap(pixmap.scaled(stdIconWidth, stdIconHeight, Qt::KeepAspectRatio));
         }
         else {
             QPixmap pixmap(":/resources/cover_unavailable.png");
@@ -260,6 +261,10 @@ void localLibraryWidget::on_previousPageBtn_clicked()
         ui->previousPageBtn->setEnabled(false);
         ui->nextPageBtn->setEnabled(true);
     }
+    else {
+        ui->previousPageBtn->setEnabled(true);
+        ui->nextPageBtn->setEnabled(true);
+    }
     setupBooksList(currentPageNumber);
 
     pagesTurned = pagesTurned + 1;
@@ -277,6 +282,10 @@ void localLibraryWidget::on_nextPageBtn_clicked()
         ui->previousPageBtn->setEnabled(true);
         ui->nextPageBtn->setEnabled(false);
     }
+    else {
+        ui->previousPageBtn->setEnabled(true);
+        ui->nextPageBtn->setEnabled(true);
+    }
     setupBooksList(currentPageNumber);
 
     pagesTurned = pagesTurned + 1;

locallibrarywidget.ui

@@ -43,13 +43,27 @@
    </property>
    <item>
     <layout class="QGridLayout" name="gridLayout">
-     <item row="0" column="1">
+     <item row="0" column="6">
-      <spacer name="horizontalSpacer">
+      <widget class="QPushButton" name="nextPageBtn">
+       <property name="text">
+        <string/>
+       </property>
+      </widget>
+     </item>
+     <item row="0" column="4">
+      <widget class="QClickableLabel" name="pageNumberLabel">
+       <property name="text">
+        <string>Page</string>
+       </property>
+      </widget>
+     </item>
+     <item row="0" column="5">
+      <spacer name="horizontalSpacer_3">
        <property name="orientation">
         <enum>Qt::Horizontal</enum>
        </property>
        <property name="sizeType">
-        <enum>QSizePolicy::MinimumExpanding</enum>
+        <enum>QSizePolicy::Maximum</enum>
        </property>
        <property name="sizeHint" stdset="0">
         <size>
@@ -59,40 +73,6 @@
        </property>
       </spacer>
      </item>
-     <item row="0" column="4">
-      <widget class="QLabel" name="pageNumberLabel">
-       <property name="text">
-        <string>Page</string>
-       </property>
-      </widget>
-     </item>
-     <item row="0" column="6">
-      <widget class="QPushButton" name="nextPageBtn">
-       <property name="text">
-        <string/>
-       </property>
-      </widget>
-     </item>
-     <item row="0" column="0">
-      <widget class="QLabel" name="localLibraryLabel">
-       <property name="sizePolicy">
-        <sizepolicy hsizetype="Preferred" vsizetype="Preferred">
-         <horstretch>0</horstretch>
-         <verstretch>0</verstretch>
-        </sizepolicy>
-       </property>
-       <property name="text">
-        <string>&lt;b&gt;Local library&lt;/b&gt;</string>
-       </property>
-      </widget>
-     </item>
-     <item row="0" column="2">
-      <widget class="QPushButton" name="previousPageBtn">
-       <property name="text">
-        <string/>
-       </property>
-      </widget>
-     </item>
      <item row="0" column="3">
       <spacer name="horizontalSpacer_2">
        <property name="orientation">
@@ -109,13 +89,13 @@
        </property>
       </spacer>
      </item>
-     <item row="0" column="5">
+     <item row="0" column="1">
-      <spacer name="horizontalSpacer_3">
+      <spacer name="horizontalSpacer">
        <property name="orientation">
         <enum>Qt::Horizontal</enum>
        </property>
        <property name="sizeType">
-        <enum>QSizePolicy::Maximum</enum>
+        <enum>QSizePolicy::MinimumExpanding</enum>
        </property>
        <property name="sizeHint" stdset="0">
         <size>
@@ -125,6 +105,26 @@
        </property>
       </spacer>
      </item>
+     <item row="0" column="2">
+      <widget class="QPushButton" name="previousPageBtn">
+       <property name="text">
+        <string/>
+       </property>
+      </widget>
+     </item>
+     <item row="0" column="0">
+      <widget class="QLabel" name="localLibraryLabel">
+       <property name="sizePolicy">
+        <sizepolicy hsizetype="Preferred" vsizetype="Preferred">
+         <horstretch>0</horstretch>
+         <verstretch>0</verstretch>
+        </sizepolicy>
+       </property>
+       <property name="text">
+        <string>&lt;b&gt;Local library&lt;/b&gt;</string>
+       </property>
+      </widget>
+     </item>
     </layout>
    </item>
    <item>
@@ -151,6 +151,9 @@
          <property name="sizeConstraint">
           <enum>QLayout::SetNoConstraint</enum>
          </property>
+         <property name="topMargin">
+          <number>10</number>
+         </property>
         </layout>
        </item>
       </layout>

mainwindow.cpp

@@ -564,6 +564,9 @@ void MainWindow::resetWindow(bool resetStackedWidget) {
     }
 
     // Destroy widgets
+    if(global::mainwindow::tabSwitcher::homePageWidgetCreated == true) {
+        homePageWidgetWindow->deleteLater();
+    }
     if(global::mainwindow::tabSwitcher::appsWidgetCreated == true) {
         appsWindow->deleteLater();
     }
@@ -577,6 +580,7 @@ void MainWindow::resetWindow(bool resetStackedWidget) {
         localLibraryWidgetWindow->deleteLater();
     }
 
+    global::mainwindow::tabSwitcher::homePageWidgetCreated = false;
     global::mainwindow::tabSwitcher::appsWidgetCreated = false;
     global::mainwindow::tabSwitcher::settingsChooserWidgetCreated = false;
     global::mainwindow::tabSwitcher::appsWidgetSelected = false;
@@ -1012,13 +1016,19 @@ void MainWindow::resetWifiIconClickedWhileReconnecting() {
 
 void MainWindow::setupLocalLibraryWidget() {
     localLibraryWidgetWindow = new localLibraryWidget(this);
-    connect(localLibraryWidgetWindow, SIGNAL(openBookSignal(QString, bool)), SLOT(openBookFile(QString, bool)));
+    QObject::connect(localLibraryWidgetWindow, &localLibraryWidget::openBookSignal, this, &MainWindow::openBookFile);
-    connect(localLibraryWidgetWindow, SIGNAL(refreshScreen()), SLOT(refreshScreen()));
+    QObject::connect(localLibraryWidgetWindow, &localLibraryWidget::refreshScreen, this, &MainWindow::refreshScreen);
     localLibraryWidgetWindow->setAttribute(Qt::WA_DeleteOnClose);
     ui->homeStackedWidget->insertWidget(1, localLibraryWidgetWindow);
     ui->homeStackedWidget->setCurrentIndex(1);
 }
 
 void MainWindow::setupHomePageWidget() {
+    homePageWidgetWindow = new homePageWidget(this);
+    QObject::connect(homePageWidgetWindow, &homePageWidget::openBookSignal, this, &MainWindow::openBookFile);
+    QObject::connect(homePageWidgetWindow, &homePageWidget::refreshScreen, this, &MainWindow::refreshScreen);
+    homePageWidgetWindow->setAttribute(Qt::WA_DeleteOnClose);
+    ui->homeStackedWidget->insertWidget(2, homePageWidgetWindow);
     ui->homeStackedWidget->setCurrentIndex(2);
+    global::mainwindow::tabSwitcher::homePageWidgetCreated = true;
 }

mainwindow.h

@@ -19,6 +19,7 @@
 #include "otamanager.h"
 #include "librarywidget.h"
 #include "locallibrarywidget.h"
+#include "homepagewidget.h"
 
 using namespace std;
 
@@ -116,6 +117,7 @@ private:
     otaManager * otaManagerWindow;
     libraryWidget * libraryWidgetWindow;
     localLibraryWidget * localLibraryWidgetWindow;
+    homePageWidget * homePageWidgetWindow;
 };
 
 #endif // MAINWINDOW_H

qclickablelabel.cpp

@@ -1,3 +1,6 @@
+#include <QJsonDocument>
+#include <QJsonObject>
+
 #include "qclickablelabel.h"
 
 QClickableLabel::QClickableLabel(QWidget* parent, Qt::WindowFlags f)
@@ -9,11 +12,22 @@ QClickableLabel::~QClickableLabel() {}
 
 void QClickableLabel::mousePressEvent(QMouseEvent * event) {
     emit clicked();
-    QClickableLabel::setStyleSheet("color: white; background-color: black; border-radius: 10px; padding: 10px");
+    if(objectName() == "pageNumberLabel") {
+        QClickableLabel::setStyleSheet("color: white; background-color: black; border-radius: 10px; padding-left: 10px; padding-right: 10px");
+    }
+    else {
+        QClickableLabel::setStyleSheet("color: white; background-color: black; border-radius: 10px; padding: 10px");
+    }
 }
 
 void QClickableLabel::mouseReleaseEvent(QMouseEvent * event) {
     emit unclicked();
     emit bookID(objectName().toInt());
-    QClickableLabel::setStyleSheet("color: black; background-color: white; border-radius: 10px; padding: 10px");
+    emit bookPath(QJsonDocument::fromJson(objectName().toUtf8()).object()["BookPath"].toString());
+    if(objectName() == "pageNumberLabel") {
+        QClickableLabel::setStyleSheet("color: black; background-color: white; border-radius: 10px; padding-left: 10px; padding-right: 10px");
+    }
+    else {
+        QClickableLabel::setStyleSheet("color: black; background-color: white; border-radius: 10px; padding: 10px");
+    }
 }

qclickablelabel.h

@@ -16,6 +16,7 @@ signals:
     void clicked();
     void unclicked();
     void bookID(int id);
+    void bookPath(QString path);
 
 protected:
     void mousePressEvent(QMouseEvent * event);

reader.cpp

@@ -15,8 +15,8 @@
 #include <QFontDatabase>
 #include <QDirIterator>
 #include <QTextCursor>
-#include <QDebug>
 #include <QGraphicsScene>
+#include <QJsonDocument>
 
 using namespace std;
 
@@ -142,24 +142,6 @@ reader::reader(QWidget *parent) :
             book_file = global::reader::bookFile;
             global::reader::bookFile = "";
         }
-        else {
-            if(global::reader::bookNumber == 1) {
-                string_checkconfig(".config/08-recent_books/1");
-                book_file = checkconfig_str_val;
-            }
-            if(global::reader::bookNumber == 2) {
-                string_checkconfig(".config/08-recent_books/2");
-                book_file = checkconfig_str_val;
-            }
-            if(global::reader::bookNumber == 3) {
-                string_checkconfig(".config/08-recent_books/3");
-                book_file = checkconfig_str_val;
-            }
-            if(global::reader::bookNumber == 4) {
-                string_checkconfig(".config/08-recent_books/4");
-                book_file = checkconfig_str_val;
-            }
-        }
     }
     else {
         if(checkconfig("/opt/inkbox_genuine") == true) {
@@ -640,40 +622,40 @@ reader::reader(QWidget *parent) :
     // Way to tell shell scripts that we're in the Reader framework
     string_writeconfig("/tmp/inkboxReading", "true");
 
-    // Saving the book opened in the favorites list
+    QJsonObject recentBooksObject;
-    string_checkconfig(".config/08-recent_books/1");
+    if(QFile::exists(global::localLibrary::recentBooksDatabasePath)) {
-    book_1 = checkconfig_str_val;
+        QJsonObject mainJsonObject = QJsonDocument::fromJson(readFile(global::localLibrary::recentBooksDatabasePath).toUtf8()).object();
-    string str_book_1 = book_1.toStdString();
+        for(int i = 1; i <= global::homePageWidget::recentBooksNumber; i++) {
-    string_checkconfig(".config/08-recent_books/2");
+            QString objectName = "Book" + QString::number(i);
-    book_2 = checkconfig_str_val;
+            QJsonObject jsonObject = mainJsonObject[objectName].toObject();
-    string str_book_2 = book_2.toStdString();
+            if(i == 1) {
-    string_checkconfig(".config/08-recent_books/3");
+                if(jsonObject.value("BookPath").toString() != book_file) {
-    book_3 = checkconfig_str_val;
+                    // Circular buffer
-    string str_book_3 = book_3.toStdString();
+                    for(int i = global::homePageWidget::recentBooksNumber; i >= 2; i--) {
-    string_checkconfig(".config/08-recent_books/4");
+                        mainJsonObject["Book" + QString::number(i)] = mainJsonObject["Book" + QString::number(i - 1)];
-    book_4 = checkconfig_str_val;
+                    }
-    std::string str_book_4 = book_4.toStdString();
+                    jsonObject.insert("BookPath", QJsonValue(book_file));
-
+                    mainJsonObject[objectName] = jsonObject;
-    // Don't mess up "Recently read books" with random "book.txt" buttons...
+                }
-    if(wakeFromSleep == true) {
+            }
-        string_checkconfig("/tmp/inkboxBookPath");
+        }
-        book_file_str = checkconfig_str_val.toStdString();
+        recentBooksObject = mainJsonObject;
     }
     else {
-        book_file_str = book_file.toStdString();
+        QJsonObject mainJsonObject;
-        string_writeconfig("/tmp/inkboxBookPath", book_file_str);
+        QJsonObject firstJsonObject;
-    }
+        firstJsonObject.insert("BookPath", QJsonValue(book_file));
+        mainJsonObject["Book1"] = firstJsonObject;
 
-    if(book_1 == book_file) {
+        for(int i = 2; i <= global::homePageWidget::recentBooksNumber; i++) {
-        ;
+            QJsonObject jsonObject;
-    }
+            jsonObject.insert("BookPath", QJsonValue(""));
-    else {
+            mainJsonObject["Book" + QString::number(i)] = jsonObject;
-        // Moves old items to the right and puts the new one at the left side
+        }
-        string_writeconfig(".config/08-recent_books/1", book_file_str);
+        recentBooksObject = mainJsonObject;
-        string_writeconfig(".config/08-recent_books/2", str_book_1);
-        string_writeconfig(".config/08-recent_books/3", str_book_2);
-        string_writeconfig(".config/08-recent_books/4", str_book_3);
     }
+    QFile::remove(global::localLibrary::recentBooksDatabasePath);
+    writeFile(global::localLibrary::recentBooksDatabasePath, QString(QJsonDocument(recentBooksObject).toJson()));
 
     // USB mass storage prompt
     if(global::reader::startUsbmsPrompt == true) {

reader.h

@@ -75,10 +75,6 @@ public:
     bool wordwidgetLock;
     bool isNightModeActive;
     bool goToSavedPageDone;
-    QString book_1;
-    QString book_2;
-    QString book_3;
-    QString book_4;
     QString ittext;
     QString book_file;
     bool batt_status;

settings.cpp

@@ -1070,6 +1070,7 @@ void settings::on_generateSystemReportBtn_clicked()
     while(true) {
         if(QFile::exists("/inkbox/systemReportDone")) {
             if(checkconfig("/inkbox/systemReportDone") == true) {
+                QFile::remove(global::localLibrary::databasePath);
                 emit showToast("System report generated successfully");
             }
             else {