src/gtk1/utilsgtk.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/gtk1/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 #include "gtk/gtkfeatures.h"
  35 #include "gdk/gdkx.h"
  36
  37 #ifdef HAVE_X11_XKBLIB_H
  38     /* under HP-UX and Solaris 2.6, at least, XKBlib.h defines structures with
  39      * field named "explicit" - which is, of course, an error for a C++
  40      * compiler. To be on the safe side, just redefine it everywhere. */
  41     #define explicit __wx_explicit
  42
  43     #include "X11/XKBlib.h"
  44
  45     #undef explicit
  46 #endif // HAVE_X11_XKBLIB_H
  47
  48 //-----------------------------------------------------------------------------
  49 // data
  50 //-----------------------------------------------------------------------------
  51
  52 extern GtkWidget *wxGetRootWindow();
  53
  54 //----------------------------------------------------------------------------
  55 // misc.
  56 //----------------------------------------------------------------------------
  57 #ifndef __EMX__
  58 // on OS/2, we use the wxBell from wxBase library
  59
  60 void wxBell()
  61 {
  62     gdk_beep();
  63 }
  64 #endif
  65
  66 /* Don't synthesize KeyUp events holding down a key and producing
  67    KeyDown events with autorepeat. */
  68 #ifdef HAVE_X11_XKBLIB_H
  69 bool wxSetDetectableAutoRepeat( bool flag )
  70 {
  71     Bool result;
  72     XkbSetDetectableAutoRepeat( GDK_DISPLAY(), flag, &result );
  73     return result;       /* TRUE if keyboard hardware supports this mode */
  74 }
  75 #else
  76 bool wxSetDetectableAutoRepeat( bool WXUNUSED(flag) )
  77 {
  78     return FALSE;
  79 }
  80 #endif
  81
  82 // ----------------------------------------------------------------------------
  83 // display characterstics
  84 // ----------------------------------------------------------------------------
  85
  86 void *wxGetDisplay()
  87 {
  88     return GDK_DISPLAY();
  89 }
  90
  91 void wxDisplaySize( int *width, int *height )
  92 {
  93     if (width) *width = gdk_screen_width();
  94     if (height) *height = gdk_screen_height();
  95 }
  96
  97 void wxDisplaySizeMM( int *width, int *height )
  98 {
  99     if (width) *width = gdk_screen_width_mm();
 100     if (height) *height = gdk_screen_height_mm();
 101 }
 102
 103 void wxClientDisplayRect(int *x, int *y, int *width, int *height)
 104 {
 105     // This is supposed to return desktop dimensions minus any window
 106     // manager panels, menus, taskbars, etc.  If there is a way to do that
 107     // for this platform please fix this function, otherwise it defaults
 108     // to the entire desktop.
 109     if (x) *x = 0;
 110     if (y) *y = 0;
 111     wxDisplaySize(width, height);
 112 }
 113
 114 void wxGetMousePosition( int* x, int* y )
 115 {
 116     gdk_window_get_pointer( (GdkWindow*) NULL, x, y, (GdkModifierType*) NULL );
 117 }
 118
 119 bool wxColourDisplay()
 120 {
 121     return TRUE;
 122 }
 123
 124 int wxDisplayDepth()
 125 {
 126     return gdk_window_get_visual( wxGetRootWindow()->window )->depth;
 127 }
 128
 129 wxToolkitInfo& wxGUIAppTraits::GetToolkitInfo()
 130 {
 131     static wxToolkitInfo info;
 132     info.shortName = _T("gtk");
 133     info.name = _T("wxGTK");
 134 #ifdef __WXUNIVERSAL__
 135     info.shortName << _T("univ");
 136     info.name << _T("/wxUniversal");
 137 #endif
 138     info.versionMajor = gtk_major_version;
 139     info.versionMinor = gtk_minor_version;
 140     info.os = wxGTK;
 141     return info;
 142 }
 143
 144 wxWindow* wxFindWindowAtPoint(const wxPoint& pt)
 145 {
 146     return wxGenericFindWindowAtPoint(pt);
 147 }
 148
 149
 150 // ----------------------------------------------------------------------------
 151 // subprocess routines
 152 // ----------------------------------------------------------------------------
 153
 154 extern "C" {
 155 static
 156 void GTK_EndProcessDetector(gpointer data, gint source,
 157                             GdkInputCondition WXUNUSED(condition) )
 158 {
 159    wxEndProcessData *proc_data = (wxEndProcessData *)data;
 160
 161    // has the process really terminated? unfortunately GDK (or GLib) seem to
 162    // generate G_IO_HUP notification even when it simply tries to read from a
 163    // closed fd and hasn't terminated at all
 164    int pid = (proc_data->pid > 0) ? proc_data->pid : -(proc_data->pid);
 165    int status = 0;
 166    int rc = waitpid(pid, &status, WNOHANG);
 167
 168    if ( rc == 0 )
 169    {
 170        // no, it didn't exit yet, continue waiting
 171        return;
 172    }
 173
 174    // set exit code to -1 if something bad happened
 175    proc_data->exitcode = rc != -1 && WIFEXITED(status) ? WEXITSTATUS(status)
 176                                                       : -1;
 177
 178    // child exited, end waiting
 179    close(source);
 180
 181    // don't call us again!
 182    gdk_input_remove(proc_data->tag);
 183
 184    wxHandleProcessTermination(proc_data);
 185 }
 186 }
 187
 188 int wxAddProcessCallback(wxEndProcessData *proc_data, int fd)
 189 {
 190     int tag = gdk_input_add(fd,
 191                             GDK_INPUT_READ,
 192                             GTK_EndProcessDetector,
 193                             (gpointer)proc_data);
 194
 195     return tag;
 196 }
 197