Add tabs to the launcher window

src/launcher/launcherbuttonbar.cpp

@@ -0,0 +1,46 @@
+
+#include "launcherbuttonbar.h"
+#include "launcherwindow.h"
+#include "gstrings.h"
+#include <zwidget/widgets/pushbutton/pushbutton.h>
+
+LauncherButtonbar::LauncherButtonbar(LauncherWindow* parent) : Widget(parent)
+{
+	PlayButton = new PushButton(this);
+	ExitButton = new PushButton(this);
+
+	PlayButton->OnClick = [=]() { OnPlayButtonClicked(); };
+	ExitButton->OnClick = [=]() { OnExitButtonClicked(); };
+}
+
+void LauncherButtonbar::UpdateLanguage()
+{
+	PlayButton->SetText(GStrings("PICKER_PLAY"));
+	ExitButton->SetText(GStrings("PICKER_EXIT"));
+}
+
+double LauncherButtonbar::GetPreferredHeight() const
+{
+	return 20.0 + std::max(PlayButton->GetPreferredHeight(), ExitButton->GetPreferredHeight());
+}
+
+void LauncherButtonbar::OnGeometryChanged()
+{
+	PlayButton->SetFrameGeometry(20.0, 10.0, 120.0, PlayButton->GetPreferredHeight());
+	ExitButton->SetFrameGeometry(GetWidth() - 20.0 - 120.0, 10.0, 120.0, PlayButton->GetPreferredHeight());
+}
+
+void LauncherButtonbar::OnPlayButtonClicked()
+{
+	GetLauncher()->Start();
+}
+
+void LauncherButtonbar::OnExitButtonClicked()
+{
+	GetLauncher()->Exit();
+}
+
+LauncherWindow* LauncherButtonbar::GetLauncher() const
+{
+	return static_cast<LauncherWindow*>(Parent());
+}