1 files changed, 158 insertions, 0 deletions
diff --git a/otk/display.cc b/otk/display.cc
new file mode 100644
index 00000000..9e6685b9
--- /dev/null
+++ b/otk/display.cc
@@ -0,0 +1,158 @@
+// -*- mode: C++; indent-tabs-mode: nil; -*-
+
+#ifdef HAVE_CONFIG_H
+# include "../config.h"
+#endif
+
+#include "display.hh"
+#include "screeninfo.hh"
+#include "gccache.hh"
+
+extern "C" {
+#include <X11/keysym.h>
+
+#ifdef    HAVE_STDIO_H
+#  include <stdio.h>
+#endif // HAVE_STDIO_H
+
+#ifdef    HAVE_STDLIB_H
+#  include <stdlib.h>
+#endif // HAVE_STDLIB_H
+
+#ifdef    HAVE_SIGNAL_H
+#  include <signal.h>
+#endif // HAVE_SIGNAL_H
+
+#ifdef    HAVE_FCNTL_H
+#  include <fcntl.h>
+#endif // HAVE_FCNTL_H
+
+#ifdef    HAVE_UNISTD_H
+#  include <sys/types.h>
+#  include <unistd.h>
+#endif // HAVE_UNISTD_H
+
+#include "gettext.h"
+#define _(str) gettext(str)
+}
+
+namespace otk {
+
+
+Display *display = (Display*) 0;
+
+
+int OBDisplay::xerrorHandler(Display *d, XErrorEvent *e)
+{
+#ifdef DEBUG
+  char errtxt[128];
+
+  XGetErrorText(d, e->error_code, errtxt, 128);
+  printf("X Error: %s\n", errtxt);
+#else
+  (void)d;
+  (void)e;
+#endif
+
+  return false;
+}
+
+
+void OBDisplay::initialize(char *name)
+{
+  int junk;
+  (void)junk;
+
+  // Open the X display
+  if (!(display = XOpenDisplay(name))) {
+    printf(_("Unable to open connection to the X server. Please set the \n\
+DISPLAY environment variable approriately, or use the '-display' command \n\
+line argument.\n\n"));
+    ::exit(1);
+  }
+  if (fcntl(ConnectionNumber(display), F_SETFD, 1) == -1) {
+    printf(_("Couldn't mark display connection as close-on-exec.\n\n"));
+    ::exit(1);
+  }
+
+  // set our error handler for X errors
+  XSetErrorHandler(xerrorHandler);
+
+  // set the DISPLAY environment variable for any lauched children, to the
+  // display we're using, so they open in the right place.
+  // XXX rm -> std::string dtmp = "DISPLAY=" + DisplayString(display);
+  if (putenv(const_cast<char*>((std::string("DISPLAY=") +
+                                DisplayString(display)).c_str()))) {
+    printf(_("warning: couldn't set environment variable 'DISPLAY'\n"));
+    perror("putenv()");
+  }
+  
+  // find the availability of X extensions we like to use
+#ifdef SHAPE
+  _shape = XShapeQueryExtension(display, &_shape_event_basep, &junk);
+#else
+  _shape = false;
+#endif
+
+#ifdef XINERAMA
+  _xinerama = XineramaQueryExtension(display, &_xinerama_event_basep, &junk);
+#else
+  _xinerama = false;
+#endif // XINERAMA
+
+  // get lock masks that are defined by the display (not constant)
+  XModifierKeymap *modmap;
+  unsigned int NumLockMask = 0, ScrollLockMask = 0;
+
+  modmap = XGetModifierMapping(display);
+  if (modmap && modmap->max_keypermod > 0) {
+    const int mask_table[] = {
+      ShiftMask, LockMask, ControlMask, Mod1Mask,
+      Mod2Mask, Mod3Mask, Mod4Mask, Mod5Mask
+    };
+    const size_t size = (sizeof(mask_table) / sizeof(mask_table[0])) *
+      modmap->max_keypermod;
+    // get the values of the keyboard lock modifiers
+    // Note: Caps lock is not retrieved the same way as Scroll and Num lock
+    // since it doesn't need to be.
+    const KeyCode num_lock = XKeysymToKeycode(display, XK_Num_Lock);
+    const KeyCode scroll_lock = XKeysymToKeycode(display, XK_Scroll_Lock);
+
+    for (size_t cnt = 0; cnt < size; ++cnt) {
+      if (! modmap->modifiermap[cnt]) continue;
+
+      if (num_lock == modmap->modifiermap[cnt])
+        NumLockMask = mask_table[cnt / modmap->max_keypermod];
+      if (scroll_lock == modmap->modifiermap[cnt])
+        ScrollLockMask = mask_table[cnt / modmap->max_keypermod];
+    }
+  }
+
+  if (modmap) XFreeModifiermap(modmap);
+
+  _mask_list[0] = 0;
+  _mask_list[1] = LockMask;
+  _mask_list[2] = NumLockMask;
+  _mask_list[3] = LockMask | NumLockMask;
+  _mask_list[4] = ScrollLockMask;
+  _mask_list[5] = ScrollLockMask | LockMask;
+  _mask_list[6] = ScrollLockMask | NumLockMask;
+  _mask_list[7] = ScrollLockMask | LockMask | NumLockMask;
+
+  // Get information on all the screens which are available.
+  _screenInfoList.reserve(ScreenCount(display));
+  for (int i = 0; i < ScreenCount(display); ++i)
+    _screenInfoList.push_back(ScreenInfo(i));
+
+  _gccache = new BGCCache(_screenInfoList.size());
+}
+
+
+void OBDisplay::destroy()
+{
+  delete _gccache;
+  XCloseDisplay(display);
+}
+
+
+}