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 wxClientDisplayRect(int *x, int *y, int *width, int *height)
 108 {
 109     // This is supposed to return desktop dimensions minus any window
 110     // manager panels, menus, taskbars, etc.  If there is a way to do that
 111     // for this platform please fix this function, otherwise it defaults
 112     // to the entire desktop.
 113     if (x) *x = 0;
 114     if (y) *y = 0;
 115     wxDisplaySize(width, height);
 116 }
 117
 118 void wxGetMousePosition( int* x, int* y )
 119 {
 120     gdk_window_get_pointer( (GdkWindow*) NULL, x, y, (GdkModifierType*) NULL );
 121 }
 122
 123 bool wxColourDisplay()
 124 {
 125     return true;
 126 }
 127
 128 int wxDisplayDepth()
 129 {
 130     return gdk_window_get_visual( wxGetRootWindow()->window )->depth;
 131 }
 132
 133 wxWindow* wxFindWindowAtPoint(const wxPoint& pt)
 134 {
 135     return wxGenericFindWindowAtPoint(pt);
 136 }
 137
 138
 139 // ----------------------------------------------------------------------------
 140 // subprocess routines
 141 // ----------------------------------------------------------------------------
 142
 143 extern "C" {
 144 static
 145 void GTK_EndProcessDetector(gpointer data, gint source,
 146                             GdkInputCondition WXUNUSED(condition) )
 147 {
 148    wxEndProcessData *proc_data = (wxEndProcessData *)data;
 149
 150    // has the process really terminated? unfortunately GDK (or GLib) seem to
 151    // generate G_IO_HUP notification even when it simply tries to read from a
 152    // closed fd and hasn't terminated at all
 153    int pid = (proc_data->pid > 0) ? proc_data->pid : -(proc_data->pid);
 154    int status = 0;
 155    int rc = waitpid(pid, &status, WNOHANG);
 156
 157    if ( rc == 0 )
 158    {
 159        // no, it didn't exit yet, continue waiting
 160        return;
 161    }
 162
 163    // set exit code to -1 if something bad happened
 164    proc_data->exitcode = rc != -1 && WIFEXITED(status) ? WEXITSTATUS(status)
 165                                                       : -1;
 166
 167    // child exited, end waiting
 168    close(source);
 169
 170    // don't call us again!
 171    gdk_input_remove(proc_data->tag);
 172
 173    wxHandleProcessTermination(proc_data);
 174 }
 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
 187 wxTimerImpl* wxGUIAppTraits::CreateTimerImpl(wxTimer *timer)
 188 {
 189     return new wxGTKTimerImpl(timer);
 190 }
 191
 192 // ----------------------------------------------------------------------------
 193 // wxPlatformInfo-related
 194 // ----------------------------------------------------------------------------
 195
 196 wxPortId wxGUIAppTraits::GetToolkitVersion(int *verMaj, int *verMin) const
 197 {
 198     if ( verMaj )
 199         *verMaj = gtk_major_version;
 200     if ( verMin )
 201         *verMin = gtk_minor_version;
 202
 203     return wxPORT_GTK;
 204 }
 205
 206 wxEventLoop* wxGUIAppTraits::CreateEventLoop()
 207 {
 208     return new wxEventLoop;
 209 }
 210
 211 #if wxUSE_INTL
 212 void wxGUIAppTraits::SetLocale()
 213 {
 214     gtk_set_locale();
 215 }
 216 #endif
 217