[desktop] Port some QtCommon changes from QML branch (#3703)

- Linker now resolves implementation differences
- Remove unneeded ifdefs
- Better abstractions overall

Signed-off-by: crueter <crueter@eden-emu.dev>
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/3703
Reviewed-by: Lizzie <lizzie@eden-emu.dev>
Reviewed-by: CamilleLaVey <camillelavey99@gmail.com>

src/yuzu/libqt_common.cpp

@@ -0,0 +1,119 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include <QFileDialog>
+#include <QInputDialog>
+#include <QMessageBox>
+#include <QProgressDialog>
+#include <QAbstractButton>
+
+#include "libqt_common.h"
+#include "qt_common/abstract/frontend.h"
+#include "qt_common/abstract/progress.h"
+#include "qt_common/qt_common.h"
+
+namespace QtCommon::Frontend {
+
+StandardButton ShowMessage(
+    Icon icon, const QString &title, const QString &text, StandardButtons buttons, QObject *parent)
+{
+    QMessageBox *box = new QMessageBox(QMessageBox::Icon(int(icon)), title, text, QMessageBox::StandardButtons(int(buttons)), (QWidget *) parent);
+    return StandardButton(box->exec());
+}
+
+WidgetsProgressDialog::WidgetsProgressDialog(const QString& labelText,
+                                             const QString& cancelButtonText, int minimum,
+                                             int maximum, QWidget* parent, Qt::WindowFlags f)
+    : QtProgressDialog(labelText, cancelButtonText, minimum, maximum, parent, f),
+      m_dialog(new QProgressDialog(labelText, cancelButtonText, minimum, maximum, parent, f)) {
+    m_dialog->setAutoClose(false);
+    m_dialog->setAutoReset(false);
+    m_dialog->setMinimumDuration(100);
+    m_dialog->setWindowModality(Qt::WindowModal);
+}
+
+bool WidgetsProgressDialog::wasCanceled() const {
+    return m_dialog->wasCanceled();
+}
+
+void WidgetsProgressDialog::setWindowModality(Qt::WindowModality modality) {
+    m_dialog->setWindowModality(modality);
+}
+
+void WidgetsProgressDialog::setMinimumDuration(int durationMs) {
+    m_dialog->setMinimumDuration(durationMs);
+}
+
+void WidgetsProgressDialog::setAutoClose(bool autoClose) {
+    m_dialog->setAutoClose(autoClose);
+}
+
+void WidgetsProgressDialog::setAutoReset(bool autoReset) {
+    m_dialog->setAutoReset(autoReset);
+}
+
+void WidgetsProgressDialog::setTitle(QString title) {
+    m_dialog->setWindowTitle(title);
+}
+
+void WidgetsProgressDialog::setLabelText(QString text) {
+    m_dialog->setLabelText(text);
+}
+
+void WidgetsProgressDialog::setMinimum(int min) {
+    m_dialog->setMinimum(min);
+}
+
+void WidgetsProgressDialog::setMaximum(int max) {
+    m_dialog->setMaximum(max);
+}
+
+void WidgetsProgressDialog::setValue(int value) {
+    m_dialog->setValue(value);
+}
+
+bool WidgetsProgressDialog::close() {
+    m_dialog->close();
+    return true;
+}
+
+void WidgetsProgressDialog::show() {
+    m_dialog->show();
+}
+
+std::unique_ptr<QtProgressDialog> newProgressDialog(const QString& labelText, const QString& cancelButtonText,
+                                                    int minimum, int maximum, Qt::WindowFlags f) {
+    return std::make_unique<WidgetsProgressDialog>(labelText, cancelButtonText, minimum, maximum,
+                                                   (QWidget*)rootObject, f);
+}
+
+QtProgressDialog* newProgressDialogPtr(const QString& labelText, const QString& cancelButtonText,
+                                       int minimum, int maximum,
+                                       Qt::WindowFlags f) {
+    return new WidgetsProgressDialog(labelText, cancelButtonText, minimum, maximum,
+                                     (QWidget*)rootObject, f);
+}
+
+int Choice(const QString& title, const QString& caption, const QStringList& options) {
+    QMessageBox box(rootObject);
+    box.setText(caption);
+    box.setWindowTitle(title);
+
+    for (const QString& opt : options) {
+        box.addButton(opt, QMessageBox::AcceptRole);
+    }
+
+    box.addButton(QMessageBox::Cancel);
+
+    box.exec();
+    auto button = box.clickedButton();
+    return options.indexOf(button->text());
+}
+
+const QString GetTextInput(const QString& title, const QString& caption,
+                           const QString& defaultText) {
+    return QInputDialog::getText(rootObject, title, caption, QLineEdit::Normal, defaultText);
+}
+
+
+} // namespace QtCommon::Frontend