Issue #159: Linux fix

Pdf4QtLaunchPad/launchdialog.cpp

@@ -22,6 +22,7 @@
 #include <QLabel>
 #include <QPushButton>
 #include <QProcess>
+#include <QMessageBox>
 
 LaunchDialog::LaunchDialog(QWidget* parent)
     : QDialog(parent, Qt::WindowStaysOnTopHint | Qt::Window | Qt::Dialog)
@@ -79,26 +80,38 @@ LaunchDialog::~LaunchDialog()
 
 void LaunchDialog::startEditor()
 {
-    startProgram("./Pdf4QtEditor");
+    startProgram("Pdf4QtEditor");
 }
 
 void LaunchDialog::startViewer()
 {
-    startProgram("./Pdf4QtViewer");
+    startProgram("Pdf4QtViewer");
 }
 
 void LaunchDialog::startPageMaster()
 {
-    startProgram("./Pdf4QtPageMaster");
+    startProgram("Pdf4QtPageMaster");
 }
 
 void LaunchDialog::startDiff()
 {
-    startProgram("./Pdf4QtDiff");
+    startProgram("Pdf4QtDiff");
 }
 
 void LaunchDialog::startProgram(const QString& program)
 {
+#ifndef Q_OS_WIN
+    QString appDir = qgetenv("APPDIR");
+    QString internalToolPath = appDir.isEmpty() ? QString("./%1").arg(program)
+                                                : QString("%1/usr/bin/%2").arg(appDir, program);
+
+    qint64 pid = 0;
+    if (!QProcess::startDetached(internalToolPath, {}, QString(), &pid))
+    {
+        QMessageBox::critical(this, tr("Error"), tr("Failed to start process '%1'").arg(internalToolPath));
+    }
+#else
     QProcess::startDetached(program);
+#endif
     close();
 }

Pdf4QtLaunchPad/main.cpp

@@ -14,22 +14,6 @@
 //
 //    You should have received a copy of the GNU Lesser General Public License
 //    along with PDF4QT.  If not, see <https://www.gnu.org/licenses/>.
-//    Copyright (C) 2024 Jakub Melka
-//
-//    This file is part of PDF4QT.
-//
-//    PDF4QT is free software: you can redistribute it and/or modify
-//    it under the terms of the GNU Lesser General Public License as published by
-//    the Free Software Foundation, either version 3 of the License, or
-//    with the written consent of the copyright owner, any later version.
-//
-//    PDF4QT is distributed in the hope that it will be useful,
-//    but WITHOUT ANY WARRANTY; without even the implied warranty of
-//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-//    GNU Lesser General Public License for more details.
-//
-//    You should have received a copy of the GNU Lesser General Public License
-//    along with PDF4QT.  If not, see <https://www.gnu.org/licenses/>.
 
 #include "launchdialog.h"