Added portable mode

src/settings.cpp

@@ -1,10 +1,13 @@
 #include "settings.h"
 
+#include <QFile>
 #include <QSettings>
 #include <QStandardPaths>
 
 namespace
 {
+const QString iniFileName = "settings.ini";
+
 const QString qs_guiGroup = "GUI";
 const QString qs_captureHotkey = "captureHotkey";
 const QString qs_repeatCaptureHotkey = "repeatCaptureHotkey";
@@ -95,15 +98,14 @@ void cleanupOutdated(QSettings& settings)
 
 void Settings::save() const
 {
-  const auto baseDataPath =
-      QStandardPaths::writableLocation(QStandardPaths::AppDataLocation);
-  tessdataPath = baseDataPath + "/tessdata";
-  translatorsDir = baseDataPath + "/translators";
+  std::unique_ptr<QSettings> ptr;
+  if (isPortable_) {
+    ptr = std::make_unique<QSettings>(iniFileName, QSettings::IniFormat);
+  } else {
+    ptr = std::make_unique<QSettings>();
+    QFile::remove(iniFileName);
   }
-
-void Settings::save()
-{
-  QSettings settings;
+  auto& settings = *ptr;
 
   settings.beginGroup(qs_guiGroup);
 
@@ -156,7 +158,15 @@ void Settings::save()
 
 void Settings::load()
 {
-  QSettings settings;
+  std::unique_ptr<QSettings> ptr;
+  if (QFile::exists(iniFileName)) {
+    ptr = std::make_unique<QSettings>(iniFileName, QSettings::IniFormat);
+    setPortable(true);
+  } else {
+    ptr = std::make_unique<QSettings>();
+    setPortable(false);
+  }
+  auto& settings = *ptr;
 
   settings.beginGroup(qs_guiGroup);
 
@@ -218,3 +228,20 @@ void Settings::load()
 
   settings.endGroup();
 }
+
+bool Settings::isPortable() const
+{
+  return isPortable_;
+}
+
+void Settings::setPortable(bool isPortable)
+{
+  isPortable_ = isPortable;
+
+  const auto baseDataPath =
+      isPortable
+          ? "."
+          : QStandardPaths::writableLocation(QStandardPaths::AppDataLocation);
+  tessdataPath = baseDataPath + "/tessdata";
+  translatorsDir = baseDataPath + "/translators";
+}

src/settings.h

@@ -24,6 +24,9 @@ public:
   void save() const;
   void load();
 
+  bool isPortable() const;
+  void setPortable(bool isPortable);
+
   QString captureHotkey{"Ctrl+Alt+Z"};
   QString repeatCaptureHotkey{"Ctrl+Alt+S"};
   QString showLastHotkey{"Ctrl+Alt+X"};
@@ -59,4 +62,7 @@ public:
   QStringList translators{"google.js"};
 
   ResultMode resultShowType{ResultMode::Widget};  // dialog
+
+private:
+  bool isPortable_{false};
 };

src/settingseditor.cpp

@@ -1,5 +1,4 @@
 #include "settingseditor.h"
-#include "debug.h"
 #include "languagecodes.h"
 #include "manager.h"
 #include "ui_settingseditor.h"
@@ -21,6 +20,8 @@ SettingsEditor::SettingsEditor(Manager &manager, update::Loader &updater)
   connect(ui->buttonBox, &QDialogButtonBox::clicked,  //
           this, &SettingsEditor::handleButtonBoxClicked);
 
+  connect(ui->portable, &QCheckBox::toggled,  //
+          this, &SettingsEditor::handlePortableChanged);
   {
     auto model = new QStringListModel(this);
     model->setStringList({tr("General"), tr("Recognition"), tr("Correction"),
@@ -94,6 +95,8 @@ SettingsEditor::~SettingsEditor()
 Settings SettingsEditor::settings() const
 {
   Settings settings;
+  settings.setPortable(ui->portable->isChecked());
+
   settings.captureHotkey = ui->captureEdit->keySequence().toString();
   settings.repeatCaptureHotkey =
       ui->repeatCaptureEdit->keySequence().toString();
@@ -138,6 +141,9 @@ Settings SettingsEditor::settings() const
 
 void SettingsEditor::setSettings(const Settings &settings)
 {
+  wasPortable_ = settings.isPortable();
+  ui->portable->setChecked(settings.isPortable());
+
   ui->captureEdit->setKeySequence(settings.captureHotkey);
   ui->repeatCaptureEdit->setKeySequence(settings.repeatCaptureHotkey);
   ui->repeatEdit->setKeySequence(settings.showLastHotkey);
@@ -269,7 +275,28 @@ void SettingsEditor::handleButtonBoxClicked(QAbstractButton *button)
     return;
   }
   if (button == ui->buttonBox->button(QDialogButtonBox::Apply)) {
-    manager_.applySettings(settings());
+    const auto settings = this->settings();
+    manager_.applySettings(settings);
+    if (settings.isPortable() != wasPortable_) {
+      wasPortable_ = settings.isPortable();
+      handlePortableChanged();
+    }
     return;
   }
 }
+
+void SettingsEditor::handlePortableChanged()
+{
+  Settings settings;
+  settings.setPortable(ui->portable->isChecked());
+  ui->tessdataPath->setText(settings.tessdataPath);
+  ui->translatorsPath->setText(settings.translatorsDir);
+  updateTesseractLanguages();
+  updateTranslators();
+
+  const auto portableChanged = wasPortable_ != settings.isPortable();
+  ui->pageUpdate->setEnabled(!portableChanged);
+  ui->pageUpdate->setToolTip(portableChanged
+                                 ? tr("Portable changed. Apply settings first")
+                                 : QString());
+}

src/settingseditor.h

@@ -28,9 +28,11 @@ private:
   void updateTranslationLanguages();
   void adjustUpdatesView();
   void handleButtonBoxClicked(QAbstractButton *button);
+  void handlePortableChanged();
 
   Ui::SettingsEditor *ui;
   Manager &manager_;
   update::Loader &updater_;
   QStringList enabledTranslators_;
+  bool wasPortable_{false};
 };

src/settingseditor.ui

@@ -179,6 +179,13 @@
          </property>
         </widget>
        </item>
+       <item>
+        <widget class="QCheckBox" name="portable">
+         <property name="text">
+          <string>Portable (store data in same folder)</string>
+         </property>
+        </widget>
+       </item>
        <item>
         <spacer name="verticalSpacer_4">
          <property name="orientation">