1 files changed, 41 insertions, 0 deletions
diff --git a/lib/gui/windows.py b/lib/gui/windows.py
new file mode 100644
index 00000000..42c34cc8
--- /dev/null
+++ b/lib/gui/windows.py
@@ -0,0 +1,41 @@
+import wx
+
+
+class SimpleBox(wx.Panel):
+    """Draw a box around one window.
+
+    Usage:
+
+        window = SomeWindow(your_window_or_panel, wx.ID_ANY)
+        box = SimpleBox(your_window_or_panel, window)
+        some_sizer.Add(box, ...)
+
+    """
+
+    def __init__(self, parent, window, *args, width=1, radius=2, **kwargs):
+        super().__init__(parent, wx.ID_ANY, *args, **kwargs)
+
+        window.Reparent(self)
+        self.window = window
+        self.sizer = wx.BoxSizer(wx.VERTICAL)
+        self.sizer.Add(window, 1, wx.EXPAND | wx.ALL, 2)
+        self.SetSizer(self.sizer)
+
+        self.width = width
+        self.radius = radius
+
+        self.Bind(wx.EVT_ERASE_BACKGROUND, self.on_erase_background)
+
+    def on_erase_background(self, event):
+        dc = event.GetDC()
+        if not dc:
+            dc = wx.ClientDC(self)
+        size = self.GetClientSize()
+
+        if wx.SystemSettings().GetAppearance().IsDark():
+            dc.SetPen(wx.Pen(wx.Colour(32, 32, 32), width=self.width))
+        else:
+            dc.SetPen(wx.Pen(wx.Colour(128, 128, 128), width=self.width))
+
+        dc.SetBrush(wx.NullBrush)
+        dc.DrawRoundedRectangle(0, 0, size.x, size.y, self.radius)