Dump of hello world ifc viewer code

src/ifcviewer/SettingsWindow.cpp

@@ -0,0 +1,68 @@
+/********************************************************************************
+ *                                                                              *
+ * This file is part of IfcOpenShell.                                           *
+ *                                                                              *
+ * IfcOpenShell is free software: you can redistribute it and/or modify         *
+ * it under the terms of the Lesser GNU General Public License as published by  *
+ * the Free Software Foundation, either version 3.0 of the License, or          *
+ * (at your option) any later version.                                          *
+ *                                                                              *
+ * IfcOpenShell 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                 *
+ * Lesser GNU General Public License for more details.                          *
+ *                                                                              *
+ * You should have received a copy of the Lesser GNU General Public License     *
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.         *
+ *                                                                              *
+ ********************************************************************************/
+
+#include "SettingsWindow.h"
+#include "AppSettings.h"
+
+#include <QDialogButtonBox>
+#include <QFormLayout>
+#include <QLineEdit>
+#include <QShowEvent>
+#include <QVBoxLayout>
+
+SettingsWindow::SettingsWindow(QWidget *parent)
+    : QDialog(parent)
+{
+    setWindowTitle("Settings");
+    setupUi();
+}
+
+void SettingsWindow::setupUi() {
+    auto* form = new QFormLayout();
+
+    geometry_library_edit_ = new QLineEdit(this);
+    geometry_library_edit_->setMinimumWidth(280);
+    form->addRow("Geometry Library", geometry_library_edit_);
+
+    auto* button_box = new QDialogButtonBox(
+        QDialogButtonBox::Ok | QDialogButtonBox::Cancel, this);
+
+    auto* root = new QVBoxLayout(this);
+    root->addLayout(form);
+    root->addWidget(button_box);
+
+    connect(button_box, &QDialogButtonBox::accepted, this, &SettingsWindow::onAccepted);
+    connect(button_box, &QDialogButtonBox::rejected, this, &SettingsWindow::reject);
+}
+
+void SettingsWindow::showEvent(QShowEvent* event) {
+    // Re-sync widgets from the persisted settings every time the dialog is
+    // shown, so a previous Cancel doesn't leave stale text in the field.
+    syncFromSettings();
+    QDialog::showEvent(event);
+}
+
+void SettingsWindow::syncFromSettings() {
+    geometry_library_edit_->setText(AppSettings::instance().geometryLibrary());
+}
+
+void SettingsWindow::onAccepted() {
+    AppSettings::instance().setGeometryLibrary(geometry_library_edit_->text());
+    accept();
+}