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 #include "wx/string.h"
  15
  16 #include "wx/apptrait.h"
  17 #include "wx/intl.h"
  18 #include "wx/log.h"
  19
  20 #include "wx/process.h"
  21
  22 #include "wx/unix/execute.h"
  23
  24 #include <stdarg.h>
  25 #include <string.h>
  26 #include <sys/stat.h>
  27 #include <sys/types.h>
  28 #include <sys/wait.h>   // for WNOHANG
  29 #include <unistd.h>
  30
  31 #include "glib.h"
  32 #include "gdk/gdk.h"
  33 #include "gtk/gtk.h"
  34 #ifndef __WXGTK20__
  35 #include "gtk/gtkfeatures.h"
  36 #endif
  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 #ifdef __WXGTK20__
  85 // Escapes string so that it is valid Pango markup XML string:
  86 wxString wxEscapeStringForPangoMarkup(const wxString& str)
  87 {
  88     size_t len = str.length();
  89     wxString out;
  90     out.Alloc(len);
  91     for (size_t i = 0; i < len; i++)
  92     {
  93         wxChar c = str[i];
  94         switch (c)
  95         {
  96             case _T('&'):
  97                 out << _T("&amp;");
  98                 break;
  99             case _T('<'):
 100                 out << _T("&lt;");
 101                 break;
 102             case _T('>'):
 103                 out << _T("&gt;");
 104                 break;
 105             case _T('\''):
 106                 out << _T("&apos;");
 107                 break;
 108             case _T('"'):
 109                 out << _T("&quot;");
 110                 break;
 111             default:
 112                 out << c;
 113                 break;
 114         }
 115     }
 116     return out;
 117 }
 118 #endif
 119
 120
 121 // ----------------------------------------------------------------------------
 122 // display characterstics
 123 // ----------------------------------------------------------------------------
 124
 125 void *wxGetDisplay()
 126 {
 127     return GDK_DISPLAY();
 128 }
 129
 130 void wxDisplaySize( int *width, int *height )
 131 {
 132     if (width) *width = gdk_screen_width();
 133     if (height) *height = gdk_screen_height();
 134 }
 135
 136 void wxDisplaySizeMM( int *width, int *height )
 137 {
 138     if (width) *width = gdk_screen_width_mm();
 139     if (height) *height = gdk_screen_height_mm();
 140 }
 141
 142 void wxClientDisplayRect(int *x, int *y, int *width, int *height)
 143 {
 144     // This is supposed to return desktop dimensions minus any window
 145     // manager panels, menus, taskbars, etc.  If there is a way to do that
 146     // for this platform please fix this function, otherwise it defaults
 147     // to the entire desktop.
 148     if (x) *x = 0;
 149     if (y) *y = 0;
 150     wxDisplaySize(width, height);
 151 }
 152
 153 void wxGetMousePosition( int* x, int* y )
 154 {
 155     gdk_window_get_pointer( (GdkWindow*) NULL, x, y, (GdkModifierType*) NULL );
 156 }
 157
 158 bool wxColourDisplay()
 159 {
 160     return TRUE;
 161 }
 162
 163 int wxDisplayDepth()
 164 {
 165     return gdk_window_get_visual( wxGetRootWindow()->window )->depth;
 166 }
 167
 168 wxToolkitInfo& wxGUIAppTraits::GetToolkitInfo()
 169 {
 170     static wxToolkitInfo info;
 171 #ifdef __WXGTK20__
 172     info.shortName = _T("gtk2");
 173 #else
 174     info.shortName = _T("gtk");
 175 #endif
 176     info.name = _T("wxGTK");
 177 #ifdef __WXUNIVERSAL__
 178     info.shortName << _T("univ");
 179     info.name << _T("/wxUniversal");
 180 #endif
 181     info.versionMajor = gtk_major_version;
 182     info.versionMinor = gtk_minor_version;
 183     info.os = wxGTK;
 184     return info;
 185 }
 186
 187 wxWindow* wxFindWindowAtPoint(const wxPoint& pt)
 188 {
 189     return wxGenericFindWindowAtPoint(pt);
 190 }
 191
 192
 193 // ----------------------------------------------------------------------------
 194 // subprocess routines
 195 // ----------------------------------------------------------------------------
 196
 197 extern "C" {
 198 static
 199 void GTK_EndProcessDetector(gpointer data, gint source,
 200                             GdkInputCondition WXUNUSED(condition) )
 201 {
 202    wxEndProcessData *proc_data = (wxEndProcessData *)data;
 203
 204    // has the process really terminated? unfortunately GDK (or GLib) seem to
 205    // generate G_IO_HUP notification even when it simply tries to read from a
 206    // closed fd and hasn't terminated at all
 207    int pid = (proc_data->pid > 0) ? proc_data->pid : -(proc_data->pid);
 208    int status = 0;
 209    int rc = waitpid(pid, &status, WNOHANG);
 210
 211    if ( rc == 0 )
 212    {
 213        // no, it didn't exit yet, continue waiting
 214        return;
 215    }
 216
 217    // set exit code to -1 if something bad happened
 218    proc_data->exitcode = rc != -1 && WIFEXITED(status) ? WEXITSTATUS(status)
 219                                                       : -1;
 220
 221    // child exited, end waiting
 222    close(source);
 223
 224    // don't call us again!
 225    gdk_input_remove(proc_data->tag);
 226
 227    wxHandleProcessTermination(proc_data);
 228 }
 229 }
 230
 231 int wxAddProcessCallback(wxEndProcessData *proc_data, int fd)
 232 {
 233     int tag = gdk_input_add(fd,
 234                             GDK_INPUT_READ,
 235                             GTK_EndProcessDetector,
 236                             (gpointer)proc_data);
 237
 238     return tag;
 239 }
 240