src/msw/cursor.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        cursor.cpp
   3 // Purpose:     wxCursor class
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     01/02/97
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart and Markus Holzem
   9 // Licence:       wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21     #pragma implementation "cursor.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/list.h"
  33     #include "wx/utils.h"
  34     #include "wx/app.h"
  35     #include "wx/bitmap.h"
  36     #include "wx/icon.h"
  37     #include "wx/cursor.h"
  38 #endif
  39
  40 #include "wx/module.h"
  41 #include "wx/msw/private.h"
  42 #include "wx/msw/dib.h"
  43
  44 #if wxUSE_RESOURCE_LOADING_IN_MSW
  45     #include "wx/msw/curico.h"
  46     #include "wx/msw/curicop.h"
  47 #endif
  48
  49 // ----------------------------------------------------------------------------
  50 // wxWin macros
  51 // ----------------------------------------------------------------------------
  52
  53 IMPLEMENT_DYNAMIC_CLASS(wxCursor, wxCursorBase)
  54
  55 // ----------------------------------------------------------------------------
  56 // globals
  57 // ----------------------------------------------------------------------------
  58
  59 // Current cursor, in order to hang on to cursor handle when setting the cursor
  60 // globally
  61 static wxCursor *gs_globalCursor = NULL;
  62
  63 // ----------------------------------------------------------------------------
  64 // private classes
  65 // ----------------------------------------------------------------------------
  66
  67 class wxCursorModule : public wxModule
  68 {
  69 public:
  70     virtual bool OnInit()
  71     {
  72         gs_globalCursor = new wxCursor;
  73
  74         return TRUE;
  75     }
  76
  77     virtual void OnExit()
  78     {
  79         delete gs_globalCursor;
  80         gs_globalCursor = (wxCursor *)NULL;
  81     }
  82 };
  83
  84 // ============================================================================
  85 // implementation
  86 // ============================================================================
  87
  88 // ----------------------------------------------------------------------------
  89 // wxCursorRefData
  90 // ----------------------------------------------------------------------------
  91
  92 wxCursorRefData::wxCursorRefData()
  93 {
  94   m_width = 32;
  95   m_height = 32;
  96
  97   m_destroyCursor = FALSE;
  98 }
  99
 100 void wxCursorRefData::Free()
 101 {
 102     if ( m_hCursor )
 103     {
 104         if ( m_destroyCursor )
 105             ::DestroyCursor((HCURSOR)m_hCursor);
 106
 107         m_hCursor = 0;
 108     }
 109 }
 110
 111 // ----------------------------------------------------------------------------
 112 // Cursors
 113 // ----------------------------------------------------------------------------
 114
 115 wxCursor::wxCursor()
 116 {
 117 }
 118
 119 wxCursor::wxCursor(const char WXUNUSED(bits)[],
 120                    int WXUNUSED(width),
 121                    int WXUNUSED(height),
 122                    int WXUNUSED(hotSpotX), int WXUNUSED(hotSpotY),
 123                    const char WXUNUSED(maskBits)[])
 124 {
 125 }
 126
 127 wxCursor::wxCursor(const wxString& cursor_file,
 128                    long flags,
 129                    int hotSpotX, int hotSpotY)
 130 {
 131     wxCursorRefData *refData = new wxCursorRefData;
 132     m_refData = refData;
 133
 134     refData->m_destroyCursor = FALSE;
 135
 136     if (flags == wxBITMAP_TYPE_CUR_RESOURCE)
 137     {
 138 #ifdef __WIN95__
 139         refData->m_hCursor = (WXHCURSOR) LoadImage(wxGetInstance(), cursor_file, IMAGE_CURSOR, 0, 0, 0);
 140 #else
 141         refData->m_hCursor = (WXHCURSOR) LoadCursor(wxGetInstance(), cursor_file);
 142 #endif
 143     }
 144     else if (flags == wxBITMAP_TYPE_CUR)
 145     {
 146 #ifdef __WIN95__
 147         refData->m_hCursor = (WXHCURSOR) LoadImage(wxGetInstance(), cursor_file, IMAGE_CURSOR, 0, 0, LR_LOADFROMFILE);
 148 #else
 149 #if wxUSE_RESOURCE_LOADING_IN_MSW
 150         refData->m_hCursor = (WXHCURSOR) ReadCursorFile(WXSTRINGCAST cursor_file, wxGetInstance(), &refData->m_width, &refData->m_height);
 151         refData->m_destroyCursor = TRUE;
 152 #endif
 153 #endif
 154     }
 155     else if (flags == wxBITMAP_TYPE_ICO)
 156     {
 157 #if wxUSE_RESOURCE_LOADING_IN_MSW
 158         refData->m_hCursor = (WXHCURSOR) IconToCursor(WXSTRINGCAST cursor_file, wxGetInstance(), hotSpotX, hotSpotY, &refData->m_width, &refData->m_height);
 159         refData->m_destroyCursor = TRUE;
 160 #endif
 161     }
 162     else if (flags == wxBITMAP_TYPE_BMP)
 163     {
 164 #if wxUSE_RESOURCE_LOADING_IN_MSW
 165         HBITMAP hBitmap = 0;
 166         HPALETTE hPalette = 0;
 167         bool success = wxReadDIB(WXSTRINGCAST cursor_file, &hBitmap, &hPalette) != 0;
 168         if (!success)
 169             return;
 170         if (hPalette)
 171             DeleteObject(hPalette);
 172         POINT pnt;
 173         pnt.x = hotSpotX;
 174         pnt.y = hotSpotY;
 175         refData->m_hCursor = (WXHCURSOR) MakeCursorFromBitmap(wxGetInstance(), hBitmap, &pnt);
 176         refData->m_destroyCursor = TRUE;
 177         DeleteObject(hBitmap);
 178 #endif
 179     }
 180
 181 #if WXWIN_COMPATIBILITY_2
 182     refData->SetOk();
 183 #endif // WXWIN_COMPATIBILITY_2
 184 }
 185
 186 // Cursors by stock number
 187 wxCursor::wxCursor(int cursor_type)
 188 {
 189   wxCursorRefData *refData = new wxCursorRefData;
 190   m_refData = refData;
 191
 192   switch (cursor_type)
 193   {
 194     case wxCURSOR_WAIT:
 195       refData->m_hCursor = (WXHCURSOR) LoadCursor((HINSTANCE) NULL, IDC_WAIT);
 196       break;
 197     case wxCURSOR_IBEAM:
 198       refData->m_hCursor = (WXHCURSOR) LoadCursor((HINSTANCE) NULL, IDC_IBEAM);
 199       break;
 200     case wxCURSOR_CROSS:
 201       refData->m_hCursor = (WXHCURSOR) LoadCursor((HINSTANCE) NULL, IDC_CROSS);
 202       break;
 203     case wxCURSOR_SIZENWSE:
 204       refData->m_hCursor = (WXHCURSOR) LoadCursor((HINSTANCE) NULL, IDC_SIZENWSE);
 205       break;
 206     case wxCURSOR_SIZENESW:
 207       refData->m_hCursor = (WXHCURSOR) LoadCursor((HINSTANCE) NULL, IDC_SIZENESW);
 208       break;
 209     case wxCURSOR_SIZEWE:
 210       refData->m_hCursor = (WXHCURSOR) LoadCursor((HINSTANCE) NULL, IDC_SIZEWE);
 211       break;
 212     case wxCURSOR_SIZENS:
 213       refData->m_hCursor = (WXHCURSOR) LoadCursor((HINSTANCE) NULL, IDC_SIZENS);
 214       break;
 215     case wxCURSOR_CHAR:
 216     {
 217       refData->m_hCursor = (WXHCURSOR) LoadCursor((HINSTANCE) NULL, IDC_ARROW);
 218       break;
 219     }
 220     case wxCURSOR_HAND:
 221     {
 222       refData->m_hCursor = (WXHCURSOR) LoadCursor(wxGetInstance(), wxT("wxCURSOR_HAND"));
 223       break;
 224     }
 225     case wxCURSOR_BULLSEYE:
 226     {
 227       refData->m_hCursor = (WXHCURSOR) LoadCursor(wxGetInstance(), wxT("wxCURSOR_BULLSEYE"));
 228       break;
 229     }
 230     case wxCURSOR_PENCIL:
 231     {
 232       refData->m_hCursor = (WXHCURSOR) LoadCursor(wxGetInstance(), wxT("wxCURSOR_PENCIL"));
 233       break;
 234     }
 235     case wxCURSOR_MAGNIFIER:
 236     {
 237       refData->m_hCursor = (WXHCURSOR) LoadCursor(wxGetInstance(), wxT("wxCURSOR_MAGNIFIER"));
 238       break;
 239     }
 240     case wxCURSOR_NO_ENTRY:
 241     {
 242       refData->m_hCursor = (WXHCURSOR) LoadCursor(wxGetInstance(), wxT("wxCURSOR_NO_ENTRY"));
 243       break;
 244     }
 245     case wxCURSOR_LEFT_BUTTON:
 246     {
 247       refData->m_hCursor = (WXHCURSOR) LoadCursor((HINSTANCE) NULL, IDC_ARROW);
 248       break;
 249     }
 250     case wxCURSOR_RIGHT_BUTTON:
 251     {
 252       refData->m_hCursor = (WXHCURSOR) LoadCursor((HINSTANCE) NULL, IDC_ARROW);
 253       break;
 254     }
 255     case wxCURSOR_MIDDLE_BUTTON:
 256     {
 257       refData->m_hCursor = (WXHCURSOR) LoadCursor((HINSTANCE) NULL, IDC_ARROW);
 258       break;
 259     }
 260     case wxCURSOR_SIZING:
 261     {
 262       refData->m_hCursor = (WXHCURSOR) LoadCursor(wxGetInstance(), wxT("wxCURSOR_SIZING"));
 263       break;
 264     }
 265     case wxCURSOR_WATCH:
 266     {
 267       refData->m_hCursor = (WXHCURSOR) LoadCursor(wxGetInstance(), wxT("wxCURSOR_WATCH"));
 268       break;
 269     }
 270     case wxCURSOR_SPRAYCAN:
 271     {
 272       refData->m_hCursor = (WXHCURSOR) LoadCursor(wxGetInstance(), wxT("wxCURSOR_ROLLER"));
 273       break;
 274     }
 275     case wxCURSOR_PAINT_BRUSH:
 276     {
 277       refData->m_hCursor = (WXHCURSOR) LoadCursor(wxGetInstance(), wxT("wxCURSOR_PBRUSH"));
 278       break;
 279     }
 280     case wxCURSOR_POINT_LEFT:
 281     {
 282       refData->m_hCursor = (WXHCURSOR) LoadCursor(wxGetInstance(), wxT("wxCURSOR_PLEFT"));
 283       break;
 284     }
 285     case wxCURSOR_POINT_RIGHT:
 286     {
 287       refData->m_hCursor = (WXHCURSOR) LoadCursor(wxGetInstance(), wxT("wxCURSOR_PRIGHT"));
 288       break;
 289     }
 290     case wxCURSOR_QUESTION_ARROW:
 291     {
 292       refData->m_hCursor = (WXHCURSOR) LoadCursor(wxGetInstance(), wxT("wxCURSOR_QARROW"));
 293       break;
 294     }
 295     case wxCURSOR_BLANK:
 296     {
 297       refData->m_hCursor = (WXHCURSOR) LoadCursor(wxGetInstance(), wxT("wxCURSOR_BLANK"));
 298       break;
 299     }
 300     default:
 301     case wxCURSOR_ARROW:
 302       refData->m_hCursor = (WXHCURSOR) LoadCursor((HINSTANCE) NULL, IDC_ARROW);
 303       break;
 304   }
 305 }
 306
 307 wxCursor::~wxCursor()
 308 {
 309 }
 310
 311 // ----------------------------------------------------------------------------
 312 // Global cursor setting
 313 // ----------------------------------------------------------------------------
 314
 315 const wxCursor *wxGetGlobalCursor()
 316 {
 317     return gs_globalCursor;
 318 }
 319
 320 void wxSetCursor(const wxCursor& cursor)
 321 {
 322     if ( cursor.Ok() )
 323     {
 324         ::SetCursor(GetHcursorOf(cursor));
 325
 326         if ( gs_globalCursor )
 327             *gs_globalCursor = cursor;
 328     }
 329 }
 330
 331