include/wx/utils.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        utils.h
   3 // Purpose:     Miscellaneous utilities
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     29/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1998 Julian Smart
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_UTILSH__
  13 #define _WX_UTILSH__
  14
  15 // ----------------------------------------------------------------------------
  16 // headers
  17 // ----------------------------------------------------------------------------
  18
  19 #ifdef __GNUG__
  20     #pragma interface "utils.h"
  21 #endif
  22
  23 #include "wx/setup.h"
  24 #include "wx/object.h"
  25 #include "wx/list.h"
  26 #include "wx/filefn.h"
  27
  28 #ifdef __X__
  29     #include <dirent.h>
  30     #include <unistd.h>
  31 #endif
  32
  33 #include <stdio.h>
  34
  35 // ----------------------------------------------------------------------------
  36 // Forward declaration
  37 // ----------------------------------------------------------------------------
  38
  39 class WXDLLEXPORT wxProcess;
  40 class WXDLLEXPORT wxFrame;
  41 class WXDLLEXPORT wxWindow;
  42 class WXDLLEXPORT wxWindowList;
  43
  44 // FIXME should use wxStricmp() instead
  45 #if defined(__GNUWIN32__)
  46     #define stricmp strcasecmp
  47     #define strnicmp strncasecmp
  48 #endif
  49
  50 // ----------------------------------------------------------------------------
  51 // Macros
  52 // ----------------------------------------------------------------------------
  53
  54 #define wxMax(a,b)            (((a) > (b)) ? (a) : (b))
  55 #define wxMin(a,b)            (((a) < (b)) ? (a) : (b))
  56
  57 // ----------------------------------------------------------------------------
  58 // String functions (deprecated, use wxString)
  59 // ----------------------------------------------------------------------------
  60
  61 // Useful buffer (FIXME VZ: yeah, that is. To be removed!)
  62 WXDLLEXPORT_DATA(extern wxChar*) wxBuffer;
  63
  64 // Make a copy of this string using 'new'
  65 WXDLLEXPORT wxChar* copystring(const wxChar *s);
  66
  67 // Matches string one within string two regardless of case
  68 WXDLLEXPORT bool StringMatch(wxChar *one, wxChar *two, bool subString = TRUE, bool exact = FALSE);
  69
  70 // A shorter way of using strcmp
  71 #define wxStringEq(s1, s2) (s1 && s2 && (wxStrcmp(s1, s2) == 0))
  72
  73 // ----------------------------------------------------------------------------
  74 // Miscellaneous functions
  75 // ----------------------------------------------------------------------------
  76
  77 // Sound the bell
  78 WXDLLEXPORT void wxBell();
  79
  80 // Get OS description as a user-readable string
  81 WXDLLEXPORT wxString wxGetOsDescription();
  82
  83 // Get OS version
  84 WXDLLEXPORT int wxGetOsVersion(int *majorVsn = (int *) NULL,
  85                                int *minorVsn = (int *) NULL);
  86
  87 // Return a string with the current date/time
  88 WXDLLEXPORT wxString wxNow();
  89
  90 #if wxUSE_GUI
  91 // Don't synthesize KeyUp events holding down a key and producing
  92 // KeyDown events with autorepeat. On by default and always on
  93 // in wxMSW.
  94 WXDLLEXPORT bool wxSetDetectableAutoRepeat( bool flag );
  95
  96 // ----------------------------------------------------------------------------
  97 // Window ID management
  98 // ----------------------------------------------------------------------------
  99
 100 // Generate a unique ID
 101 WXDLLEXPORT long wxNewId();
 102 #if !defined(NewId) && defined(WXWIN_COMPATIBILITY)
 103     #define NewId wxNewId
 104 #endif
 105
 106 // Ensure subsequent IDs don't clash with this one
 107 WXDLLEXPORT void wxRegisterId(long id);
 108 #if !defined(RegisterId) && defined(WXWIN_COMPATIBILITY)
 109     #define RegisterId wxRegisterId
 110 #endif
 111
 112 // Return the current ID
 113 WXDLLEXPORT long wxGetCurrentId();
 114
 115 #endif // wxUSE_GUI
 116
 117 // ----------------------------------------------------------------------------
 118 // Various conversions
 119 // ----------------------------------------------------------------------------
 120
 121 WXDLLEXPORT_DATA(extern const wxChar*) wxFloatToStringStr;
 122 WXDLLEXPORT_DATA(extern const wxChar*) wxDoubleToStringStr;
 123
 124 WXDLLEXPORT void StringToFloat(wxChar *s, float *number);
 125 WXDLLEXPORT wxChar* FloatToString(float number, const wxChar *fmt = wxFloatToStringStr);
 126 WXDLLEXPORT void StringToDouble(wxChar *s, double *number);
 127 WXDLLEXPORT wxChar* DoubleToString(double number, const wxChar *fmt = wxDoubleToStringStr);
 128 WXDLLEXPORT void StringToInt(wxChar *s, int *number);
 129 WXDLLEXPORT void StringToLong(wxChar *s, long *number);
 130 WXDLLEXPORT wxChar* IntToString(int number);
 131 WXDLLEXPORT wxChar* LongToString(long number);
 132
 133 // Convert 2-digit hex number to decimal
 134 WXDLLEXPORT int wxHexToDec(const wxString& buf);
 135
 136 // Convert decimal integer to 2-character hex string
 137 WXDLLEXPORT void wxDecToHex(int dec, wxChar *buf);
 138 WXDLLEXPORT wxString wxDecToHex(int dec);
 139
 140 // ----------------------------------------------------------------------------
 141 // Process management
 142 // ----------------------------------------------------------------------------
 143
 144 // Execute another program. Returns 0 if there was an error, a PID otherwise.
 145 WXDLLEXPORT long wxExecute(wxChar **argv, bool sync = FALSE,
 146                            wxProcess *process = (wxProcess *) NULL);
 147 WXDLLEXPORT long wxExecute(const wxString& command, bool sync = FALSE,
 148                            wxProcess *process = (wxProcess *) NULL);
 149
 150 // execute the command capturing its output into an array line by line
 151 WXDLLEXPORT long wxExecute(const wxString& command, wxArrayString& output);
 152
 153 enum wxSignal
 154 {
 155     wxSIGNONE = 0,  // verify if the process exists under Unix
 156     wxSIGHUP,
 157     wxSIGINT,
 158     wxSIGQUIT,
 159     wxSIGILL,
 160     wxSIGTRAP,
 161     wxSIGABRT,
 162     wxSIGIOT = wxSIGABRT,   // another name
 163     wxSIGEMT,
 164     wxSIGFPE,
 165     wxSIGKILL,
 166     wxSIGBUS,
 167     wxSIGSEGV,
 168     wxSIGSYS,
 169     wxSIGPIPE,
 170     wxSIGALRM,
 171     wxSIGTERM
 172
 173     // further signals are different in meaning between different Unix systems
 174 };
 175
 176 // the argument is ignored under Windows - the process is always killed
 177 WXDLLEXPORT int wxKill(long pid, wxSignal sig = wxSIGTERM);
 178
 179 // Execute a command in an interactive shell window (always synchronously)
 180 // If no command then just the shell
 181 WXDLLEXPORT bool wxShell(const wxString& command = wxEmptyString);
 182
 183 // As wxShell(), but must give a (non interactive) command and its output will
 184 // be returned in output array
 185 WXDLLEXPORT bool wxShell(const wxString& command, wxArrayString& output);
 186
 187 // Sleep for nSecs seconds
 188 WXDLLEXPORT void wxSleep(int nSecs);
 189
 190 // Sleep for a given amount of milliseconds
 191 WXDLLEXPORT void wxUsleep(unsigned long milliseconds);
 192
 193 // Get free memory in bytes, or -1 if cannot determine amount (e.g. on UNIX)
 194 WXDLLEXPORT long wxGetFreeMemory();
 195
 196 // should wxApp::OnFatalException() be called?
 197 WXDLLEXPORT bool wxHandleFatalExceptions(bool doit = TRUE);
 198
 199 // ----------------------------------------------------------------------------
 200 // Network and username functions.
 201 // ----------------------------------------------------------------------------
 202
 203 // NB: "char *" functions are deprecated, use wxString ones!
 204
 205 // Get eMail address
 206 WXDLLEXPORT bool wxGetEmailAddress(wxChar *buf, int maxSize);
 207 WXDLLEXPORT wxString wxGetEmailAddress();
 208
 209 // Get hostname.
 210 WXDLLEXPORT bool wxGetHostName(wxChar *buf, int maxSize);
 211 WXDLLEXPORT wxString wxGetHostName();
 212
 213 // Get FQDN
 214 WXDLLEXPORT wxString wxGetFullHostName();
 215 WXDLLEXPORT bool wxGetFullHostName(wxChar *buf, int maxSize);
 216
 217 // Get user ID e.g. jacs (this is known as login name under Unix)
 218 WXDLLEXPORT bool wxGetUserId(wxChar *buf, int maxSize);
 219 WXDLLEXPORT wxString wxGetUserId();
 220
 221 // Get user name e.g. Julian Smart
 222 WXDLLEXPORT bool wxGetUserName(wxChar *buf, int maxSize);
 223 WXDLLEXPORT wxString wxGetUserName();
 224
 225 // Get current Home dir and copy to dest (returns pstr->c_str())
 226 WXDLLEXPORT wxString wxGetHomeDir();
 227 WXDLLEXPORT const wxChar* wxGetHomeDir(wxString *pstr);
 228
 229 // Get the user's home dir (caller must copy --- volatile)
 230 // returns NULL is no HOME dir is known
 231 #if defined(__UNIX__) && wxUSE_UNICODE
 232 WXDLLEXPORT const wxMB2WXbuf wxGetUserHome(const wxString& user = wxEmptyString);
 233 #else
 234 WXDLLEXPORT wxChar* wxGetUserHome(const wxString& user = wxEmptyString);
 235 #endif
 236
 237 #if wxUSE_GUI // GUI only things from now on
 238
 239 // ----------------------------------------------------------------------------
 240 // Menu accelerators related things
 241 // ----------------------------------------------------------------------------
 242
 243 WXDLLEXPORT wxChar* wxStripMenuCodes(wxChar *in, wxChar *out = (wxChar *) NULL);
 244 WXDLLEXPORT wxString wxStripMenuCodes(const wxString& str);
 245
 246 #if wxUSE_ACCEL
 247 class WXDLLEXPORT wxAcceleratorEntry;
 248 WXDLLEXPORT wxAcceleratorEntry *wxGetAccelFromString(const wxString& label);
 249 #endif // wxUSE_ACCEL
 250
 251 // ----------------------------------------------------------------------------
 252 // Window search
 253 // ----------------------------------------------------------------------------
 254
 255 // Find the window/widget with the given title or label.
 256 // Pass a parent to begin the search from, or NULL to look through
 257 // all windows.
 258 WXDLLEXPORT wxWindow* wxFindWindowByLabel(const wxString& title, wxWindow *parent = (wxWindow *) NULL);
 259
 260 // Find window by name, and if that fails, by label.
 261 WXDLLEXPORT wxWindow* wxFindWindowByName(const wxString& name, wxWindow *parent = (wxWindow *) NULL);
 262
 263 // Returns menu item id or -1 if none.
 264 WXDLLEXPORT int wxFindMenuItemId(wxFrame *frame, const wxString& menuString, const wxString& itemString);
 265
 266 // ----------------------------------------------------------------------------
 267 // Message/event queue helpers
 268 // ----------------------------------------------------------------------------
 269
 270 // Yield to other apps/messages
 271 WXDLLEXPORT bool wxYield();
 272
 273 // Yield to other apps/messages and disable user input
 274 WXDLLEXPORT bool wxSafeYield(wxWindow *win = NULL);
 275
 276 // Enable or disable input to all top level windows
 277 WXDLLEXPORT void wxEnableTopLevelWindows(bool enable = TRUE);
 278
 279 // Check whether this window wants to process messages, e.g. Stop button
 280 // in long calculations.
 281 WXDLLEXPORT bool wxCheckForInterrupt(wxWindow *wnd);
 282
 283 // Consume all events until no more left
 284 WXDLLEXPORT void wxFlushEvents();
 285
 286 // a class which disables all windows (except, may be, thegiven one) in its
 287 // ctor and enables them back in its dtor
 288 class WXDLLEXPORT wxWindowDisabler
 289 {
 290 public:
 291     wxWindowDisabler(wxWindow *winToSkip = (wxWindow *)NULL);
 292     ~wxWindowDisabler();
 293
 294 private:
 295     wxWindowList *m_winDisabled;
 296
 297 #ifdef __WXMSW__
 298     wxWindow *m_winTop;
 299 #endif // MSW
 300 };
 301
 302 // ----------------------------------------------------------------------------
 303 // Cursors
 304 // ----------------------------------------------------------------------------
 305
 306 // Set the cursor to the busy cursor for all windows
 307 class WXDLLEXPORT wxCursor;
 308 WXDLLEXPORT_DATA(extern wxCursor*) wxHOURGLASS_CURSOR;
 309 WXDLLEXPORT void wxBeginBusyCursor(wxCursor *cursor = wxHOURGLASS_CURSOR);
 310
 311 // Restore cursor to normal
 312 WXDLLEXPORT void wxEndBusyCursor();
 313
 314 // TRUE if we're between the above two calls
 315 WXDLLEXPORT bool wxIsBusy();
 316
 317 // Convenience class so we can just create a wxBusyCursor object on the stack
 318 class WXDLLEXPORT wxBusyCursor
 319 {
 320 public:
 321     wxBusyCursor(wxCursor* cursor = wxHOURGLASS_CURSOR)
 322         { wxBeginBusyCursor(cursor); }
 323    ~wxBusyCursor()
 324         { wxEndBusyCursor(); }
 325 };
 326
 327 // ----------------------------------------------------------------------------
 328 // Error message functions used by wxWindows (deprecated, use wxLog)
 329 // ----------------------------------------------------------------------------
 330
 331 // Format a message on the standard error (UNIX) or the debugging
 332 // stream (Windows)
 333 WXDLLEXPORT void wxDebugMsg(const wxChar *fmt ...);
 334
 335 // Non-fatal error (continues)
 336 WXDLLEXPORT_DATA(extern const wxChar*) wxInternalErrorStr;
 337 WXDLLEXPORT void wxError(const wxString& msg, const wxString& title = wxInternalErrorStr);
 338
 339 // Fatal error (exits)
 340 WXDLLEXPORT_DATA(extern const wxChar*) wxFatalErrorStr;
 341 WXDLLEXPORT void wxFatalError(const wxString& msg, const wxString& title = wxFatalErrorStr);
 342
 343 // ----------------------------------------------------------------------------
 344 // Reading and writing resources (eg WIN.INI, .Xdefaults)
 345 // ----------------------------------------------------------------------------
 346
 347 #if wxUSE_RESOURCES
 348 WXDLLEXPORT bool wxWriteResource(const wxString& section, const wxString& entry, const wxString& value, const wxString& file = wxEmptyString);
 349 WXDLLEXPORT bool wxWriteResource(const wxString& section, const wxString& entry, float value, const wxString& file = wxEmptyString);
 350 WXDLLEXPORT bool wxWriteResource(const wxString& section, const wxString& entry, long value, const wxString& file = wxEmptyString);
 351 WXDLLEXPORT bool wxWriteResource(const wxString& section, const wxString& entry, int value, const wxString& file = wxEmptyString);
 352
 353 WXDLLEXPORT bool wxGetResource(const wxString& section, const wxString& entry, wxChar **value, const wxString& file = wxEmptyString);
 354 WXDLLEXPORT bool wxGetResource(const wxString& section, const wxString& entry, float *value, const wxString& file = wxEmptyString);
 355 WXDLLEXPORT bool wxGetResource(const wxString& section, const wxString& entry, long *value, const wxString& file = wxEmptyString);
 356 WXDLLEXPORT bool wxGetResource(const wxString& section, const wxString& entry, int *value, const wxString& file = wxEmptyString);
 357 #endif // wxUSE_RESOURCES
 358
 359 void WXDLLEXPORT wxGetMousePosition( int* x, int* y );
 360
 361 // MSW only: get user-defined resource from the .res file.
 362 // Returns NULL or newly-allocated memory, so use delete[] to clean up.
 363 #ifdef __WXMSW__
 364 WXDLLEXPORT extern const wxChar* wxUserResourceStr;
 365 WXDLLEXPORT wxChar* wxLoadUserResource(const wxString& resourceName, const wxString& resourceType = wxUserResourceStr);
 366
 367 // Implemented in utils.cpp: VC++, Win95 only. Sets up a console for standard
 368 // input/output
 369 WXDLLEXPORT void wxRedirectIOToConsole();
 370
 371 #endif // MSW
 372
 373 // ----------------------------------------------------------------------------
 374 // Display and colorss (X only)
 375 // ----------------------------------------------------------------------------
 376
 377 #ifdef __WXGTK__
 378     void *wxGetDisplay();
 379 #endif
 380
 381 #ifdef __X__
 382     WXDisplay *wxGetDisplay();
 383     bool wxSetDisplay(const wxString& display_name);
 384     wxString wxGetDisplayName();
 385 #endif // X or GTK+
 386
 387 #ifdef __X__
 388
 389 #ifdef __VMS__ // Xlib.h for VMS is not (yet) compatible with C++
 390                // The resulting warnings are switched off here
 391 #pragma message disable nosimpint
 392 #endif
 393 #include <X11/Xlib.h>
 394 #ifdef __VMS__
 395 #pragma message enable nosimpint
 396 #endif
 397
 398 #define wxMAX_RGB           0xff
 399 #define wxMAX_SV            1000
 400 #define wxSIGN(x)           ((x < 0) ? -x : x)
 401 #define wxH_WEIGHT          4
 402 #define wxS_WEIGHT          1
 403 #define wxV_WEIGHT          2
 404
 405 typedef struct wx_hsv {
 406                         int h,s,v;
 407                       } wxHSV;
 408
 409 #define wxMax3(x,y,z) ((x > y) ? ((x > z) ? x : z) : ((y > z) ? y : z))
 410 #define wxMin3(x,y,z) ((x < y) ? ((x < z) ? x : z) : ((y < z) ? y : z))
 411
 412 void wxHSVToXColor(wxHSV *hsv,XColor *xcolor);
 413 void wxXColorToHSV(wxHSV *hsv,XColor *xcolor);
 414 void wxAllocNearestColor(Display *display,Colormap colormap,XColor *xcolor);
 415 void wxAllocColor(Display *display,Colormap colormap,XColor *xcolor);
 416
 417 #endif //__X__
 418
 419 #endif // wxUSE_GUI
 420
 421 #endif
 422     // _WX_UTILSH__