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
  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 #include "wx/gtk1/private/timer.h"
  23 #include "wx/evtloop.h"
  24 #include "wx/process.h"
  25
  26 #include "wx/unix/execute.h"
  27
  28 #include <stdarg.h>
  29 #include <string.h>
  30 #include <sys/stat.h>
  31 #include <sys/types.h>
  32 #include <sys/wait.h>   // for WNOHANG
  33 #include <unistd.h>
  34
  35 #include "glib.h"
  36 #include "gdk/gdk.h"
  37 #include "gtk/gtk.h"
  38 #include "gtk/gtkfeatures.h"
  39 #include "gdk/gdkx.h"
  40
  41 #ifdef HAVE_X11_XKBLIB_H
  42     /* under HP-UX and Solaris 2.6, at least, XKBlib.h defines structures with
  43      * field named "explicit" - which is, of course, an error for a C++
  44      * compiler. To be on the safe side, just redefine it everywhere. */
  45     #define explicit __wx_explicit
  46
  47     #include "X11/XKBlib.h"
  48
  49     #undef explicit
  50 #endif // HAVE_X11_XKBLIB_H
  51
  52 //-----------------------------------------------------------------------------
  53 // data
  54 //-----------------------------------------------------------------------------
  55
  56 extern GtkWidget *wxGetRootWindow();
  57
  58 //----------------------------------------------------------------------------
  59 // misc.
  60 //----------------------------------------------------------------------------
  61 #ifndef __EMX__
  62 // on OS/2, we use the wxBell from wxBase library
  63
  64 void wxBell()
  65 {
  66     gdk_beep();
  67 }
  68 #endif
  69
  70 /* Don't synthesize KeyUp events holding down a key and producing
  71    KeyDown events with autorepeat. */
  72 #ifdef HAVE_X11_XKBLIB_H
  73 bool wxSetDetectableAutoRepeat( bool flag )
  74 {
  75     Bool result;
  76     XkbSetDetectableAutoRepeat( GDK_DISPLAY(), flag, &result );
  77     return result;       /* true if keyboard hardware supports this mode */
  78 }
  79 #else
  80 bool wxSetDetectableAutoRepeat( bool WXUNUSED(flag) )
  81 {
  82     return false;
  83 }
  84 #endif
  85
  86 // ----------------------------------------------------------------------------
  87 // display characterstics
  88 // ----------------------------------------------------------------------------
  89
  90 void *wxGetDisplay()
  91 {
  92     return GDK_DISPLAY();
  93 }
  94
  95 void wxDisplaySize( int *width, int *height )
  96 {
  97     if (width) *width = gdk_screen_width();
  98     if (height) *height = gdk_screen_height();
  99 }
 100
 101 void wxDisplaySizeMM( int *width, int *height )
 102 {
 103     if (width) *width = gdk_screen_width_mm();
 104     if (height) *height = gdk_screen_height_mm();
 105 }
 106
 107 void wxGetMousePosition( int* x, int* y )
 108 {
 109     gdk_window_get_pointer( (GdkWindow*) NULL, x, y, (GdkModifierType*) NULL );
 110 }
 111
 112 bool wxColourDisplay()
 113 {
 114     return true;
 115 }
 116
 117 int wxDisplayDepth()
 118 {
 119     return gdk_window_get_visual( wxGetRootWindow()->window )->depth;
 120 }
 121
 122 wxWindow* wxFindWindowAtPoint(const wxPoint& pt)
 123 {
 124     return wxGenericFindWindowAtPoint(pt);
 125 }
 126
 127
 128 // ----------------------------------------------------------------------------
 129 // subprocess routines
 130 // ----------------------------------------------------------------------------
 131
 132 extern "C" {
 133 static
 134 void GTK_EndProcessDetector(gpointer data, gint source,
 135                             GdkInputCondition WXUNUSED(condition) )
 136 {
 137    wxEndProcessData *proc_data = (wxEndProcessData *)data;
 138
 139    // has the process really terminated? unfortunately GDK (or GLib) seem to
 140    // generate G_IO_HUP notification even when it simply tries to read from a
 141    // closed fd and hasn't terminated at all
 142    int pid = (proc_data->pid > 0) ? proc_data->pid : -(proc_data->pid);
 143    int status = 0;
 144    int rc = waitpid(pid, &status, WNOHANG);
 145
 146    if ( rc == 0 )
 147    {
 148        // no, it didn't exit yet, continue waiting
 149        return;
 150    }
 151
 152    // set exit code to -1 if something bad happened
 153    proc_data->exitcode = rc != -1 && WIFEXITED(status) ? WEXITSTATUS(status)
 154                                                       : -1;
 155
 156    // child exited, end waiting
 157    close(source);
 158
 159    // don't call us again!
 160    gdk_input_remove(proc_data->tag);
 161
 162    wxHandleProcessTermination(proc_data);
 163 }
 164 }
 165
 166 int wxAddProcessCallback(wxEndProcessData *proc_data, int fd)
 167 {
 168     int tag = gdk_input_add(fd,
 169                             GDK_INPUT_READ,
 170                             GTK_EndProcessDetector,
 171                             (gpointer)proc_data);
 172
 173     return tag;
 174 }
 175
 176 wxTimerImpl* wxGUIAppTraits::CreateTimerImpl(wxTimer *timer)
 177 {
 178     return new wxGTKTimerImpl(timer);
 179 }
 180
 181 // ----------------------------------------------------------------------------
 182 // wxPlatformInfo-related
 183 // ----------------------------------------------------------------------------
 184
 185 wxPortId wxGUIAppTraits::GetToolkitVersion(int *verMaj, int *verMin) const
 186 {
 187     if ( verMaj )
 188         *verMaj = gtk_major_version;
 189     if ( verMin )
 190         *verMin = gtk_minor_version;
 191
 192     return wxPORT_GTK;
 193 }
 194
 195 wxEventLoopBase* wxGUIAppTraits::CreateEventLoop()
 196 {
 197     return new wxEventLoop;
 198 }
 199
 200 #if wxUSE_INTL
 201 void wxGUIAppTraits::SetLocale()
 202 {
 203     gtk_set_locale();
 204 }
 205 #endif
 206