Huge cleanups and added open gl window

src/editor/dialogs/imageeditordialog.cpp

@@ -0,0 +1,88 @@
+#include "imageeditordialog.h"
+#include "ui_imageeditordialog.h"
+
+#include <QMessageBox>
+
+ImageEditorDialog::ImageEditorDialog(const QPixmap &pixmap, const QString &title, QWidget *parent) :
+    QDialog{parent},
+    m_ui{std::make_unique<Ui::ImageEditorDialog>()},
+    m_pixmap{pixmap},
+    m_title{title}
+{
+    m_ui->setupUi(this);
+
+#ifdef Q_OS_LINUX
+    setWindowFlags((windowFlags() & ~Qt::Dialog) | Qt::Window);
+#endif
+    setWindowFlag(Qt::WindowMinimizeButtonHint);
+    setWindowFlag(Qt::WindowMaximizeButtonHint);
+    setWindowFlag(Qt::WindowCloseButtonHint);
+
+    updateTitle();
+
+    m_ui->scrollArea->setBackgroundRole(QPalette::Dark);
+
+    m_ui->canvas->setPixmap(m_pixmap);
+}
+
+ImageEditorDialog::~ImageEditorDialog() = default;
+
+void ImageEditorDialog::accept()
+{
+    if (!m_unsavedChanges)
+    {
+        QDialog::reject();
+        return;
+    }
+
+    // TODO
+
+    QDialog::accept();
+}
+
+void ImageEditorDialog::reject()
+{
+    if (!m_unsavedChanges)
+    {
+        QDialog::reject();
+        return;
+    }
+
+    const auto result = QMessageBox::warning(
+        this,
+        tr("The Image has been modified."),
+        tr("Do you want to save your changes?"),
+        QMessageBox::Save | QMessageBox::Discard | QMessageBox::Cancel,
+        QMessageBox::Save
+    );
+    switch (result)
+    {
+    case QMessageBox::Save:
+        accept();
+        return;
+    case QMessageBox::Discard:
+        QDialog::reject();
+        return;
+    case QMessageBox::Cancel:
+        return;
+    default:
+        qWarning() << "unexpected dialog result" << result;
+    }
+}
+
+void ImageEditorDialog::changed()
+{
+    if (!m_unsavedChanges)
+    {
+        m_unsavedChanges = true;
+        updateTitle();
+    }
+}
+
+void ImageEditorDialog::updateTitle()
+{
+    setWindowTitle(tr("%0%1")
+                       .arg(m_title)
+                       .arg(m_unsavedChanges ? tr("*") : QString{})
+                   );
+}