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 #include "wx/utils.h"
  11 #include "wx/string.h"
  12
  13 #include "wx/apptrait.h"
  14 #include "wx/intl.h"
  15 #include "wx/log.h"
  16
  17 #include "wx/process.h"
  18
  19 #include "wx/unix/execute.h"
  20
  21 #include <stdarg.h>
  22 #include <string.h>
  23 #include <sys/stat.h>
  24 #include <sys/types.h>
  25 #include <sys/wait.h>   // for WNOHANG
  26 #include <unistd.h>
  27
  28 #include "glib.h"
  29 #include "gdk/gdk.h"
  30 #include "gtk/gtk.h"
  31 #ifndef __WXGTK20__
  32 #include "gtk/gtkfeatures.h"
  33 #endif
  34 #include "gdk/gdkx.h"
  35
  36 #ifdef HAVE_X11_XKBLIB_H
  37     /* under HP-UX and Solaris 2.6, at least, XKBlib.h defines structures with
  38      * field named "explicit" - which is, of course, an error for a C++
  39      * compiler. To be on the safe side, just redefine it everywhere. */
  40     #define explicit __wx_explicit
  41
  42     #include "X11/XKBlib.h"
  43
  44     #undef explicit
  45 #endif // HAVE_X11_XKBLIB_H
  46
  47 //-----------------------------------------------------------------------------
  48 // data
  49 //-----------------------------------------------------------------------------
  50
  51 extern GtkWidget *wxGetRootWindow();
  52
  53 //----------------------------------------------------------------------------
  54 // misc.
  55 //----------------------------------------------------------------------------
  56
  57 void wxBell()
  58 {
  59     gdk_beep();
  60 }
  61
  62 /* Don't synthesize KeyUp events holding down a key and producing
  63    KeyDown events with autorepeat. */
  64 #ifdef HAVE_X11_XKBLIB_H
  65 bool wxSetDetectableAutoRepeat( bool flag )
  66 {
  67     Bool result;
  68     XkbSetDetectableAutoRepeat( GDK_DISPLAY(), flag, &result );
  69     return result;       /* TRUE if keyboard hardware supports this mode */
  70 }
  71 #else
  72 bool wxSetDetectableAutoRepeat( bool WXUNUSED(flag) )
  73 {
  74     return FALSE;
  75 }
  76 #endif
  77
  78 // ----------------------------------------------------------------------------
  79 // display characterstics
  80 // ----------------------------------------------------------------------------
  81
  82 void *wxGetDisplay()
  83 {
  84     return GDK_DISPLAY();
  85 }
  86
  87 void wxDisplaySize( int *width, int *height )
  88 {
  89     if (width) *width = gdk_screen_width();
  90     if (height) *height = gdk_screen_height();
  91 }
  92
  93 void wxDisplaySizeMM( int *width, int *height )
  94 {
  95     if (width) *width = gdk_screen_width_mm();
  96     if (height) *height = gdk_screen_height_mm();
  97 }
  98
  99 void wxClientDisplayRect(int *x, int *y, int *width, int *height)
 100 {
 101     // This is supposed to return desktop dimensions minus any window
 102     // manager panels, menus, taskbars, etc.  If there is a way to do that
 103     // for this platform please fix this function, otherwise it defaults
 104     // to the entire desktop.
 105     if (x) *x = 0;
 106     if (y) *y = 0;
 107     wxDisplaySize(width, height);
 108 }
 109
 110 void wxGetMousePosition( int* x, int* y )
 111 {
 112     gdk_window_get_pointer( (GdkWindow*) NULL, x, y, (GdkModifierType*) NULL );
 113 }
 114
 115 bool wxColourDisplay()
 116 {
 117     return TRUE;
 118 }
 119
 120 int wxDisplayDepth()
 121 {
 122     return gdk_window_get_visual( wxGetRootWindow()->window )->depth;
 123 }
 124
 125 int wxGUIAppTraits::GetOSVersion(int *majorVsn, int *minorVsn)
 126 {
 127     if (majorVsn)
 128         *majorVsn = GTK_MAJOR_VERSION;
 129     if (minorVsn)
 130         *minorVsn = GTK_MINOR_VERSION;
 131
 132     return wxGTK;
 133 }
 134
 135 wxWindow* wxFindWindowAtPoint(const wxPoint& pt)
 136 {
 137     return wxGenericFindWindowAtPoint(pt);
 138 }
 139
 140
 141 // ----------------------------------------------------------------------------
 142 // subprocess routines
 143 // ----------------------------------------------------------------------------
 144
 145 extern "C"
 146 void GTK_EndProcessDetector(gpointer data, gint source,
 147                             GdkInputCondition WXUNUSED(condition) )
 148 {
 149    wxEndProcessData *proc_data = (wxEndProcessData *)data;
 150
 151    // has the process really terminated? unfortunately GDK (or GLib) seem to
 152    // generate G_IO_HUP notification even when it simply tries to read from a
 153    // closed fd and hasn't terminated at all
 154    int pid = (proc_data->pid > 0) ? proc_data->pid : -(proc_data->pid);
 155    int status = 0;
 156    int rc = waitpid(pid, &status, WNOHANG);
 157
 158    if ( rc == 0 )
 159    {
 160        // no, it didn't exit yet, continue waiting
 161        return;
 162    }
 163
 164    // set exit code to -1 if something bad happened
 165    proc_data->exitcode = rc != -1 && WIFEXITED(status) ? WEXITSTATUS(status)
 166                                                       : -1;
 167
 168    // child exited, end waiting
 169    close(source);
 170
 171    // don't call us again!
 172    gdk_input_remove(proc_data->tag);
 173
 174    wxHandleProcessTermination(proc_data);
 175 }
 176
 177 int wxAddProcessCallback(wxEndProcessData *proc_data, int fd)
 178 {
 179     int tag = gdk_input_add(fd,
 180                             GDK_INPUT_READ,
 181                             GTK_EndProcessDetector,
 182                             (gpointer)proc_data);
 183
 184     return tag;
 185 }
 186