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 // ----------------------------------------------------------------------------
  85 // display characterstics
  86 // ----------------------------------------------------------------------------
  87
  88 void *wxGetDisplay()
  89 {
  90     return GDK_DISPLAY();
  91 }
  92
  93 void wxDisplaySize( int *width, int *height )
  94 {
  95     if (width) *width = gdk_screen_width();
  96     if (height) *height = gdk_screen_height();
  97 }
  98
  99 void wxDisplaySizeMM( int *width, int *height )
 100 {
 101     if (width) *width = gdk_screen_width_mm();
 102     if (height) *height = gdk_screen_height_mm();
 103 }
 104
 105 void wxClientDisplayRect(int *x, int *y, int *width, int *height)
 106 {
 107     // This is supposed to return desktop dimensions minus any window
 108     // manager panels, menus, taskbars, etc.  If there is a way to do that
 109     // for this platform please fix this function, otherwise it defaults
 110     // to the entire desktop.
 111     if (x) *x = 0;
 112     if (y) *y = 0;
 113     wxDisplaySize(width, height);
 114 }
 115
 116 void wxGetMousePosition( int* x, int* y )
 117 {
 118     gdk_window_get_pointer( (GdkWindow*) NULL, x, y, (GdkModifierType*) NULL );
 119 }
 120
 121 bool wxColourDisplay()
 122 {
 123     return TRUE;
 124 }
 125
 126 int wxDisplayDepth()
 127 {
 128     return gdk_window_get_visual( wxGetRootWindow()->window )->depth;
 129 }
 130
 131 wxToolkitInfo& wxGUIAppTraits::GetToolkitInfo()
 132 {
 133     static wxToolkitInfo info;
 134 #ifdef __WXGTK20__
 135     info.shortName = _T("gtk2");
 136 #else
 137     info.shortName = _T("gtk");
 138 #endif
 139     info.name = _T("wxGTK");
 140 #ifdef __WXUNIVERSAL__
 141     info.shortName << _T("univ");
 142     info.name << _T("/wxUniversal");
 143 #endif
 144     info.versionMajor = gtk_major_version;
 145     info.versionMinor = gtk_minor_version;
 146     info.os = wxGTK;
 147     return info;
 148 }
 149
 150 wxWindow* wxFindWindowAtPoint(const wxPoint& pt)
 151 {
 152     return wxGenericFindWindowAtPoint(pt);
 153 }
 154
 155
 156 // ----------------------------------------------------------------------------
 157 // subprocess routines
 158 // ----------------------------------------------------------------------------
 159
 160 extern "C"
 161 void GTK_EndProcessDetector(gpointer data, gint source,
 162                             GdkInputCondition WXUNUSED(condition) )
 163 {
 164    wxEndProcessData *proc_data = (wxEndProcessData *)data;
 165
 166    // has the process really terminated? unfortunately GDK (or GLib) seem to
 167    // generate G_IO_HUP notification even when it simply tries to read from a
 168    // closed fd and hasn't terminated at all
 169    int pid = (proc_data->pid > 0) ? proc_data->pid : -(proc_data->pid);
 170    int status = 0;
 171    int rc = waitpid(pid, &status, WNOHANG);
 172
 173    if ( rc == 0 )
 174    {
 175        // no, it didn't exit yet, continue waiting
 176        return;
 177    }
 178
 179    // set exit code to -1 if something bad happened
 180    proc_data->exitcode = rc != -1 && WIFEXITED(status) ? WEXITSTATUS(status)
 181                                                       : -1;
 182
 183    // child exited, end waiting
 184    close(source);
 185
 186    // don't call us again!
 187    gdk_input_remove(proc_data->tag);
 188
 189    wxHandleProcessTermination(proc_data);
 190 }
 191
 192 int wxAddProcessCallback(wxEndProcessData *proc_data, int fd)
 193 {
 194     int tag = gdk_input_add(fd,
 195                             GDK_INPUT_READ,
 196                             GTK_EndProcessDetector,
 197                             (gpointer)proc_data);
 198
 199     return tag;
 200 }
 201