src/Form/Draw.hpp

   1 /*
   2 Copyright_License {
   3
   4   XCSoar Glide Computer - http://www.xcsoar.org/
   5   Copyright (C) 2000-2013 The XCSoar Project
   6   A detailed list of copyright holders can be found in the file "AUTHORS".
   7
   8   This program is free software; you can redistribute it and/or
   9   modify it under the terms of the GNU General Public License
  10   as published by the Free Software Foundation; either version 2
  11   of the License, or (at your option) any later version.
  12
  13   This program is distributed in the hope that it will be useful,
  14   but WITHOUT ANY WARRANTY; without even the implied warranty of
  15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16   GNU General Public License for more details.
  17
  18   You should have received a copy of the GNU General Public License
  19   along with this program; if not, write to the Free Software
  20   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  21 }
  22 */
  23
  24 #ifndef XCSOAR_FORM_DRAW_HPP
  25 #define XCSOAR_FORM_DRAW_HPP
  26
  27 #include "Screen/PaintWindow.hpp"
  28
  29 class ContainerWindow;
  30
  31 /**
  32  * This class is used for creating custom drawn content.
  33  * It is based on the WindowControl class.
  34  */
  35 class WndOwnerDrawFrame : public PaintWindow {
  36 public:
  37   typedef void (*OnPaintCallback_t)(WndOwnerDrawFrame *Sender, Canvas &canvas);
  38
  39 public:
  40   WndOwnerDrawFrame(ContainerWindow &parent,
  41                     PixelRect rc, const WindowStyle style,
  42                     OnPaintCallback_t OnPaintCallback);
  43
  44   /**
  45    * Sets the callback which actually paints the window.  The
  46    * background is cleared before, and all configured fonts and colors
  47    * have been set in the #Canvas.
  48    */
  49   void SetOnPaintNotify(OnPaintCallback_t OnPaintCallback) {
  50     mOnPaintCallback = OnPaintCallback;
  51   }
  52
  53 protected:
  54   /**
  55    * The callback function for painting the content of the control
  56    * @see SetOnPaintNotify()
  57    */
  58   OnPaintCallback_t mOnPaintCallback;
  59
  60   /** from class PaintWindow */
  61   virtual void OnPaint(Canvas &canvas) override;
  62 };
  63
  64 #endif