From 68fa08ae83e4157e0161f060a001f4e73298321a Mon Sep 17 00:00:00 2001
From: Bertrand Songis <bsongis@gmail.com>
Date: Thu, 26 Mar 2020 17:52:21 +0100
Subject: [PATCH] New helper for transparent bitmap background

---
 .../thirdparty/libopenui/src/bufferedwindow.h | 20 +++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/radio/src/thirdparty/libopenui/src/bufferedwindow.h b/radio/src/thirdparty/libopenui/src/bufferedwindow.h
index 6e6aa4a2c..a7f693cc1 100644
--- a/radio/src/thirdparty/libopenui/src/bufferedwindow.h
+++ b/radio/src/thirdparty/libopenui/src/bufferedwindow.h
@@ -96,4 +96,24 @@ class TransparentBufferedWindow: public BufferedWindow<T>
     }
 };
 
+class TransparentBitmapBackground: public TransparentBufferedWindow<Window>
+{
+  public:
+    TransparentBitmapBackground(Window * parent, const rect_t & rect, const BitmapBuffer * bitmap):
+      TransparentBufferedWindow<Window>(parent, rect, OPAQUE),
+      background(bitmap)
+    {
+    }
+
+  protected:
+    const BitmapBuffer * background;
+
+    void paintUpdate(BitmapBuffer * dc) override
+    {
+      if (background) {
+        dc->drawBitmap((width() - background->width()) / 2, (height() - background->height()) / 2, background);
+      }
+    }
+};
+
 #endif // _BUFFERED_WINDOW_H_