scroller.h

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00001 // $Id: scroller.h 1282 2006-06-09 09:46:49Z alex $
00002 /* @@tag:xara-cn@@ DO NOT MODIFY THIS LINE
00003 ================================XARAHEADERSTART===========================
00004  
00005                Xara LX, a vector drawing and manipulation program.
00006                     Copyright (C) 1993-2006 Xara Group Ltd.
00007        Copyright on certain contributions may be held in joint with their
00008               respective authors. See AUTHORS file for details.
00009 
00010 LICENSE TO USE AND MODIFY SOFTWARE
00011 ----------------------------------
00012 
00013 This file is part of Xara LX.
00014 
00015 Xara LX is free software; you can redistribute it and/or modify it
00016 under the terms of the GNU General Public License version 2 as published
00017 by the Free Software Foundation.
00018 
00019 Xara LX and its component source files are distributed in the hope
00020 that it will be useful, but WITHOUT ANY WARRANTY; without even the
00021 implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
00022 See the GNU General Public License for more details.
00023 
00024 You should have received a copy of the GNU General Public License along
00025 with Xara LX (see the file GPL in the root directory of the
00026 distribution); if not, write to the Free Software Foundation, Inc., 51
00027 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
00028 
00029 
00030 ADDITIONAL RIGHTS
00031 -----------------
00032 
00033 Conditional upon your continuing compliance with the GNU General Public
00034 License described above, Xara Group Ltd grants to you certain additional
00035 rights. 
00036 
00037 The additional rights are to use, modify, and distribute the software
00038 together with the wxWidgets library, the wxXtra library, and the "CDraw"
00039 library and any other such library that any version of Xara LX relased
00040 by Xara Group Ltd requires in order to compile and execute, including
00041 the static linking of that library to XaraLX. In the case of the
00042 "CDraw" library, you may satisfy obligation under the GNU General Public
00043 License to provide source code by providing a binary copy of the library
00044 concerned and a copy of the license accompanying it.
00045 
00046 Nothing in this section restricts any of the rights you have under
00047 the GNU General Public License.
00048 
00049 
00050 SCOPE OF LICENSE
00051 ----------------
00052 
00053 This license applies to this program (XaraLX) and its constituent source
00054 files only, and does not necessarily apply to other Xara products which may
00055 in part share the same code base, and are subject to their own licensing
00056 terms.
00057 
00058 This license does not apply to files in the wxXtra directory, which
00059 are built into a separate library, and are subject to the wxWindows
00060 license contained within that directory in the file "WXXTRA-LICENSE".
00061 
00062 This license does not apply to the binary libraries (if any) within
00063 the "libs" directory, which are subject to a separate license contained
00064 within that directory in the file "LIBS-LICENSE".
00065 
00066 
00067 ARRANGEMENTS FOR CONTRIBUTION OF MODIFICATIONS
00068 ----------------------------------------------
00069 
00070 Subject to the terms of the GNU Public License (see above), you are
00071 free to do whatever you like with your modifications. However, you may
00072 (at your option) wish contribute them to Xara's source tree. You can
00073 find details of how to do this at:
00074   http://www.xaraxtreme.org/developers/
00075 
00076 Prior to contributing your modifications, you will need to complete our
00077 contributor agreement. This can be found at:
00078   http://www.xaraxtreme.org/developers/contribute/
00079 
00080 Please note that Xara will not accept modifications which modify any of
00081 the text between the start and end of this header (marked
00082 XARAHEADERSTART and XARAHEADEREND).
00083 
00084 
00085 MARKS
00086 -----
00087 
00088 Xara, Xara LX, Xara X, Xara X/Xtreme, Xara Xtreme, the Xtreme and Xara
00089 designs are registered or unregistered trademarks, design-marks, and/or
00090 service marks of Xara Group Ltd. All rights in these marks are reserved.
00091 
00092 
00093       Xara Group Ltd, Gaddesden Place, Hemel Hempstead, HP2 6EX, UK.
00094                         http://www.xara.com/
00095 
00096 =================================XARAHEADEREND============================
00097  */
00098 //
00099 // This declares the CScroller, CHorzScroller &
00100 // CVertScroller classes, which implement RISCOS
00101 // style proportional scroll bars under Windows. It
00102 // also declares the CScrollerCorner window, which
00103 // is the "size box" gadget between two scroll bars.
00104 //
00105 /*
00106  *  */
00107 
00108 
00109 #ifndef SCROLLER__INC
00110 #define SCROLLER__INC
00111 
00112 #include "camelot.h"
00113 //#include "ccmaths.h" - in camtypes.h [AUTOMATICALLY REMOVED]
00114 
00115 
00117 // This user-defined messsage indicates to the window owning the scroller
00118 // that the scroll offset has changed.
00119 
00120 #define WM_SCROLLEREVENT    (WM_USER + 0x110)
00121 
00123 // CScrollerCorner window
00124 
00125 /***************************************************************************************
00126 >   class CScrollerCorner : public CWnd
00127 
00128     Author:     Justin_Flude (Xara Group Ltd) <camelotdev@xara.com>
00129     Created:    ages ago
00130     Purpose:    This OIL class is the little square in the bottom-right of a window
00131                 featuring horizontal and vertical scroll bars.  It is currently
00132                 completely useless (except visually, of course).
00133                 
00134 ****************************************************************************************/
00135 
00136 class CScrollerCorner : public wxWindow
00137 {
00138 
00140 // Construction
00141 
00142 public:
00143     CScrollerCorner();
00144     virtual BOOL Create(LPCTSTR, LPCTSTR, DWORD style, const wxRect& rect,
00145                         wxWindow* pParent, UINT32 id);
00146 
00147 private:
00148     wxBitmap SizeBitmap;
00149 
00150 
00151 private:
00152     DECLARE_EVENT_TABLE()
00153 
00154 public:
00155     void OnPaint(wxPaintEvent& event );
00156     void OnLButtonDown(wxMouseEvent &event );
00157     
00158     void OnSetCursor( wxSetCursorEvent& event );
00159 };
00160 
00162 
00163 class CWinScroller : public wxScrollBar
00164 {
00165 protected:
00166     static INT32 ScrollerSize   ;           // UIC 
00167 /*
00168     XLONG MinVal;                       // "smallest" scroll value
00169     XLONG MaxVal;                       // "largest" scroll value
00170     XLONG Range;                        // the difference between the above
00171     XLONG Delta;                        // the sign of (MaxVal - MinVal)
00172     XLONG ThumbVal;                     // current scroll value
00173     
00174     XLONG Granularity;                  // smallest possible scroll delta
00175     XLONG LineSize;                     // current size of a "line"
00176     XLONG PageSize;                     // current size of a "page"
00177     
00178     BOOL Proportional;
00179     BOOL Enabled;
00180 */
00181     BOOL Horizontal;
00182 
00183 public:
00184     CWinScroller(BOOL Horizontal);
00185     virtual ~CWinScroller();
00186     BOOL Create(wxWindow* pParent, UINT32 nID, const wxPoint& pos = wxDefaultPosition,
00187             const wxSize& size = wxDefaultSize);
00188 
00189 public:
00190     virtual BOOL IsHorizontal() { return Horizontal; };
00191 /*
00192     void GetScrollPos(XLONG* pxl) const;
00193     static INT32 GetScrollerSize() {return ScrollerSize;};
00194     void SetGranularity(const XLONG& unit);
00195 
00196     void SetScrollPos(const XLONG& n, BOOL redraw = TRUE);
00197     void SetScrollRange(const XLONG& lo, const XLONG& hi, BOOL redraw = TRUE);
00198     
00199     void SetLineSize(const XLONG& sz);
00200     void SetPageSize(const XLONG& sz);
00201     
00202     void LineUp();
00203     void LineDown();
00204     void PageUp();
00205     void PageDown();
00206     
00207     void ShowScroller(BOOL show = TRUE);
00208     static BOOL HasScrollerSizeChanged();   // UIC
00209 
00210     void SetProportional(BOOL bProp);
00211     virtual void CalcPosFromParentClient(LPRECT lpRect);
00212     void HandleScrollMessage(UINT32 nSBCode, UINT32 nPos);
00213 
00214 private:
00215     void SnapToGrain(XLONG* pxl) const;
00216     void ClipThumbPos(const XLONG& n);
00217     void MoveThumb(BOOL redraw);
00218 */
00219 };
00220 
00221 
00222 #endif      // SCROLLER__INC

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