src/Widget/OffsetButtonsWidget.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_OFFSET_BUTTONS_WIDGET_HPP
  25 #define XCSOAR_OFFSET_BUTTONS_WIDGET_HPP
  26
  27 #include "Widget.hpp"
  28 #include "Form/ActionListener.hpp"
  29 #include "Math/fixed.hpp"
  30
  31 #include <tchar.h>
  32
  33 struct DialogLook;
  34 class ActionListener;
  35 class WndButton;
  36
  37 /**
  38  * Show four buttons to increment/decrement a value.
  39  */
  40 class OffsetButtonsWidget : public NullWidget, private ActionListener {
  41   const DialogLook &look;
  42   const TCHAR *const format;
  43   const fixed offsets[4];
  44   WndButton *buttons[4];
  45
  46 public:
  47   OffsetButtonsWidget(const DialogLook &_look, const TCHAR *_format,
  48                       fixed small_offset, fixed large_offset)
  49     :look(_look), format(_format),
  50      offsets{-large_offset, -small_offset, small_offset, large_offset} {}
  51
  52 public:
  53   /* virtual methods from Widget */
  54   virtual PixelSize GetMinimumSize() const override;
  55   virtual PixelSize GetMaximumSize() const override;
  56   virtual void Prepare(ContainerWindow &parent,
  57                        const PixelRect &rc) override;
  58   virtual void Unprepare() override;
  59   virtual void Show(const PixelRect &rc) override;
  60   virtual void Hide() override;
  61   virtual void Move(const PixelRect &rc) override;
  62   virtual bool SetFocus() override;
  63
  64 protected:
  65   virtual void OnOffset(fixed offset) = 0;
  66
  67 private:
  68   /* virtual methods from ActionListener */
  69   virtual void OnAction(int id) override;
  70 };
  71
  72 #endif