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
  60 void wxBell()
  61 {
  62     gdk_beep();
  63 }
  64
  65 /* Don't synthesize KeyUp events holding down a key and producing
  66    KeyDown events with autorepeat. */
  67 #ifdef HAVE_X11_XKBLIB_H
  68 bool wxSetDetectableAutoRepeat( bool flag )
  69 {
  70     Bool result;
  71     XkbSetDetectableAutoRepeat( GDK_DISPLAY(), flag, &result );
  72     return result;       /* TRUE if keyboard hardware supports this mode */
  73 }
  74 #else
  75 bool wxSetDetectableAutoRepeat( bool WXUNUSED(flag) )
  76 {
  77     return FALSE;
  78 }
  79 #endif
  80
  81 // ----------------------------------------------------------------------------
  82 // display characterstics
  83 // ----------------------------------------------------------------------------
  84
  85 void *wxGetDisplay()
  86 {
  87     return GDK_DISPLAY();
  88 }
  89
  90 void wxDisplaySize( int *width, int *height )
  91 {
  92     if (width) *width = gdk_screen_width();
  93     if (height) *height = gdk_screen_height();
  94 }
  95
  96 void wxDisplaySizeMM( int *width, int *height )
  97 {
  98     if (width) *width = gdk_screen_width_mm();
  99     if (height) *height = gdk_screen_height_mm();
 100 }
 101
 102 void wxClientDisplayRect(int *x, int *y, int *width, int *height)
 103 {
 104     // This is supposed to return desktop dimensions minus any window
 105     // manager panels, menus, taskbars, etc.  If there is a way to do that
 106     // for this platform please fix this function, otherwise it defaults
 107     // to the entire desktop.
 108     if (x) *x = 0;
 109     if (y) *y = 0;
 110     wxDisplaySize(width, height);
 111 }
 112
 113 void wxGetMousePosition( int* x, int* y )
 114 {
 115     gdk_window_get_pointer( (GdkWindow*) NULL, x, y, (GdkModifierType*) NULL );
 116 }
 117
 118 bool wxColourDisplay()
 119 {
 120     return TRUE;
 121 }
 122
 123 int wxDisplayDepth()
 124 {
 125     return gdk_window_get_visual( wxGetRootWindow()->window )->depth;
 126 }
 127
 128 wxToolkitInfo& wxGUIAppTraits::GetToolkitInfo()
 129 {
 130     static wxToolkitInfo info;
 131 #ifdef __WXGTK20__
 132     info.shortName = _T("gtk2");
 133 #else
 134     info.shortName = _T("gtk");
 135 #endif
 136     info.name = _T("wxGTK");
 137 #ifdef __WXUNIVERSAL__
 138     info.shortName << _T("univ");
 139     info.name << _T("/wxUniversal");
 140 #endif
 141     info.versionMajor = GTK_MAJOR_VERSION;
 142     info.versionMinor = GTK_MINOR_VERSION;
 143     info.os = wxGTK;
 144     return info;
 145 }
 146
 147 wxWindow* wxFindWindowAtPoint(const wxPoint& pt)
 148 {
 149     return wxGenericFindWindowAtPoint(pt);
 150 }
 151
 152
 153 // ----------------------------------------------------------------------------
 154 // subprocess routines
 155 // ----------------------------------------------------------------------------
 156
 157 extern "C"
 158 void GTK_EndProcessDetector(gpointer data, gint source,
 159                             GdkInputCondition WXUNUSED(condition) )
 160 {
 161    wxEndProcessData *proc_data = (wxEndProcessData *)data;
 162
 163    // has the process really terminated? unfortunately GDK (or GLib) seem to
 164    // generate G_IO_HUP notification even when it simply tries to read from a
 165    // closed fd and hasn't terminated at all
 166    int pid = (proc_data->pid > 0) ? proc_data->pid : -(proc_data->pid);
 167    int status = 0;
 168    int rc = waitpid(pid, &status, WNOHANG);
 169
 170    if ( rc == 0 )
 171    {
 172        // no, it didn't exit yet, continue waiting
 173        return;
 174    }
 175
 176    // set exit code to -1 if something bad happened
 177    proc_data->exitcode = rc != -1 && WIFEXITED(status) ? WEXITSTATUS(status)
 178                                                       : -1;
 179
 180    // child exited, end waiting
 181    close(source);
 182
 183    // don't call us again!
 184    gdk_input_remove(proc_data->tag);
 185
 186    wxHandleProcessTermination(proc_data);
 187 }
 188
 189 int wxAddProcessCallback(wxEndProcessData *proc_data, int fd)
 190 {
 191     int tag = gdk_input_add(fd,
 192                             GDK_INPUT_READ,
 193                             GTK_EndProcessDetector,
 194                             (gpointer)proc_data);
 195
 196     return tag;
 197 }
 198