src/TortoiseIDiff/NiceTrackbar.h

   1 // TortoiseIDiff - an image diff viewer in TortoiseSVN
   2
   3 // Copyright (C) 2006 - 2008 - TortoiseSVN
   4
   5 // This program is free software; you can redistribute it and/or
   6 // modify it under the terms of the GNU General Public License
   7 // as published by the Free Software Foundation; either version 2
   8 // of the License, or (at your option) any later version.
   9
  10 // This program is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 // GNU General Public License for more details.
  14
  15 // You should have received a copy of the GNU General Public License
  16 // along with this program; if not, write to the Free Software Foundation,
  17 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 //
  19 #pragma once
  20
  21 /**
  22  * \ingroup TortoiseIDiff
  23  * Subclassed trackbar control that jumps to the mouse click positions immediately, instead of
  24  * changing the value "towards it".
  25  */
  26 class CNiceTrackbar {
  27 public:
  28     CNiceTrackbar() : m_Window(NULL), m_OrigProc(NULL), m_Dragging(false), m_DragChanged(false) { }
  29
  30     HWND GetWindow() const { return m_Window; }
  31     bool IsValid() const { return m_Window != NULL; }
  32
  33     void ConvertTrackbarToNice( HWND window );
  34
  35 private:
  36     static LRESULT CALLBACK NiceTrackbarProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam);
  37     void PostMessageToParent (int tbCode) const;
  38     bool SetThumb (LPARAM lparamPoint);
  39
  40 private:
  41     HWND m_Window;
  42     WNDPROC m_OrigProc;
  43     bool m_Dragging;
  44     bool m_DragChanged;
  45 };