src/gtk/utilsgtk.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/gtk/utilsgtk.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 // For compilers that support precompilation, includes "wx.h".
  11 #include "wx/wxprec.h"
  12
  13 #include "wx/utils.h"
  14
  15 #ifndef WX_PRECOMP
  16     #include "wx/string.h"
  17     #include "wx/intl.h"
  18     #include "wx/log.h"
  19 #endif
  20
  21 #include "wx/apptrait.h"
  22
  23 #include "wx/process.h"
  24
  25 #include "wx/unix/execute.h"
  26
  27 #include <stdarg.h>
  28 #include <string.h>
  29 #include <sys/stat.h>
  30 #include <sys/types.h>
  31 #include <sys/wait.h>   // for WNOHANG
  32 #include <unistd.h>
  33
  34 #include "glib.h"
  35 #include "gdk/gdk.h"
  36 #include "gtk/gtk.h"
  37 #include "gdk/gdkx.h"
  38
  39 #ifdef HAVE_X11_XKBLIB_H
  40     /* under HP-UX and Solaris 2.6, at least, XKBlib.h defines structures with
  41      * field named "explicit" - which is, of course, an error for a C++
  42      * compiler. To be on the safe side, just redefine it everywhere. */
  43     #define explicit __wx_explicit
  44
  45     #include "X11/XKBlib.h"
  46
  47     #undef explicit
  48 #endif // HAVE_X11_XKBLIB_H
  49
  50 //-----------------------------------------------------------------------------
  51 // data
  52 //-----------------------------------------------------------------------------
  53
  54 extern GtkWidget *wxGetRootWindow();
  55
  56 //----------------------------------------------------------------------------
  57 // misc.
  58 //----------------------------------------------------------------------------
  59 #ifndef __EMX__
  60 // on OS/2, we use the wxBell from wxBase library
  61
  62 void wxBell()
  63 {
  64     gdk_beep();
  65 }
  66 #endif
  67
  68 /* Don't synthesize KeyUp events holding down a key and producing
  69    KeyDown events with autorepeat. */
  70 #ifdef HAVE_X11_XKBLIB_H
  71 bool wxSetDetectableAutoRepeat( bool flag )
  72 {
  73     Bool result;
  74     XkbSetDetectableAutoRepeat( GDK_DISPLAY(), flag, &result );
  75     return result;       /* true if keyboard hardware supports this mode */
  76 }
  77 #else
  78 bool wxSetDetectableAutoRepeat( bool WXUNUSED(flag) )
  79 {
  80     return false;
  81 }
  82 #endif
  83
  84 // Escapes string so that it is valid Pango markup XML string:
  85 wxString wxEscapeStringForPangoMarkup(const wxString& str)
  86 {
  87     size_t len = str.length();
  88     wxString out;
  89     out.Alloc(len);
  90     for (size_t i = 0; i < len; i++)
  91     {
  92         wxChar c = str[i];
  93         switch (c)
  94         {
  95             case _T('&'):
  96                 out << _T("&amp;");
  97                 break;
  98             case _T('<'):
  99                 out << _T("&lt;");
 100                 break;
 101             case _T('>'):
 102                 out << _T("&gt;");
 103                 break;
 104             case _T('\''):
 105                 out << _T("&apos;");
 106                 break;
 107             case _T('"'):
 108                 out << _T("&quot;");
 109                 break;
 110             default:
 111                 out << c;
 112                 break;
 113         }
 114     }
 115     return out;
 116 }
 117
 118
 119 // ----------------------------------------------------------------------------
 120 // display characterstics
 121 // ----------------------------------------------------------------------------
 122
 123 void *wxGetDisplay()
 124 {
 125     return GDK_DISPLAY();
 126 }
 127
 128 void wxDisplaySize( int *width, int *height )
 129 {
 130     if (width) *width = gdk_screen_width();
 131     if (height) *height = gdk_screen_height();
 132 }
 133
 134 void wxDisplaySizeMM( int *width, int *height )
 135 {
 136     if (width) *width = gdk_screen_width_mm();
 137     if (height) *height = gdk_screen_height_mm();
 138 }
 139
 140 void wxClientDisplayRect(int *x, int *y, int *width, int *height)
 141 {
 142     // This is supposed to return desktop dimensions minus any window
 143     // manager panels, menus, taskbars, etc.  If there is a way to do that
 144     // for this platform please fix this function, otherwise it defaults
 145     // to the entire desktop.
 146     if (x) *x = 0;
 147     if (y) *y = 0;
 148     wxDisplaySize(width, height);
 149 }
 150
 151 void wxGetMousePosition( int* x, int* y )
 152 {
 153     gdk_window_get_pointer( (GdkWindow*) NULL, x, y, (GdkModifierType*) NULL );
 154 }
 155
 156 bool wxColourDisplay()
 157 {
 158     return true;
 159 }
 160
 161 int wxDisplayDepth()
 162 {
 163     return gdk_drawable_get_visual( wxGetRootWindow()->window )->depth;
 164 }
 165
 166 wxToolkitInfo& wxGUIAppTraits::GetToolkitInfo()
 167 {
 168     static wxToolkitInfo info;
 169     info.shortName = _T("gtk2");
 170     info.name = _T("wxGTK");
 171 #ifdef __WXUNIVERSAL__
 172     info.shortName << _T("univ");
 173     info.name << _T("/wxUniversal");
 174 #endif
 175     info.versionMajor = gtk_major_version;
 176     info.versionMinor = gtk_minor_version;
 177     info.os = wxGTK;
 178     return info;
 179 }
 180
 181 wxWindow* wxFindWindowAtPoint(const wxPoint& pt)
 182 {
 183     return wxGenericFindWindowAtPoint(pt);
 184 }
 185
 186 #if !wxUSE_UNICODE
 187
 188 wxCharBuffer wxConvertToGTK(const wxString& s, wxFontEncoding enc)
 189 {
 190     if ( enc == wxFONTENCODING_UTF8 )
 191     {
 192         // no need for conversion at all
 193         return wxCharBuffer(s);
 194     }
 195
 196     wxWCharBuffer wbuf;
 197     if ( enc == wxFONTENCODING_SYSTEM || enc == wxFONTENCODING_DEFAULT )
 198     {
 199         wbuf = wxConvUI->cMB2WC(s);
 200     }
 201     else // another encoding, use generic conversion class
 202     {
 203         wbuf = wxCSConv(enc).cMB2WC(s);
 204     }
 205
 206     wxCharBuffer buf;
 207     if ( wbuf )
 208         buf = wxConvUTF8.cWC2MB(wbuf);
 209
 210     return buf;
 211 }
 212
 213 #endif // !wxUSE_UNICODE
 214
 215 // ----------------------------------------------------------------------------
 216 // subprocess routines
 217 // ----------------------------------------------------------------------------
 218
 219 extern "C" {
 220 static
 221 void GTK_EndProcessDetector(gpointer data, gint source,
 222                             GdkInputCondition WXUNUSED(condition) )
 223 {
 224    wxEndProcessData *proc_data = (wxEndProcessData *)data;
 225
 226    // has the process really terminated? unfortunately GDK (or GLib) seem to
 227    // generate G_IO_HUP notification even when it simply tries to read from a
 228    // closed fd and hasn't terminated at all
 229    int pid = (proc_data->pid > 0) ? proc_data->pid : -(proc_data->pid);
 230    int status = 0;
 231    int rc = waitpid(pid, &status, WNOHANG);
 232
 233    if ( rc == 0 )
 234    {
 235        // no, it didn't exit yet, continue waiting
 236        return;
 237    }
 238
 239    // set exit code to -1 if something bad happened
 240    proc_data->exitcode = rc != -1 && WIFEXITED(status) ? WEXITSTATUS(status)
 241                                                       : -1;
 242
 243    // child exited, end waiting
 244    close(source);
 245
 246    // don't call us again!
 247    gdk_input_remove(proc_data->tag);
 248
 249    wxHandleProcessTermination(proc_data);
 250 }
 251 }
 252
 253 int wxAddProcessCallback(wxEndProcessData *proc_data, int fd)
 254 {
 255     int tag = gdk_input_add(fd,
 256                             GDK_INPUT_READ,
 257                             GTK_EndProcessDetector,
 258                             (gpointer)proc_data);
 259
 260     return tag;
 261 }