1 files changed, 185 insertions, 0 deletions
diff --git a/src/glut/glx/glut_menu2.c b/src/glut/glx/glut_menu2.c
new file mode 100644
index 0000000000..93119b540e
--- /dev/null
+++ b/src/glut/glx/glut_menu2.c
@@ -0,0 +1,185 @@
+
+/* Copyright (c) Mark J. Kilgard, 1994, 1997. */
+
+/* This program is freely distributable without licensing fees
+   and is provided without guarantee or warrantee expressed or
+   implied. This program is -not- in the public domain. */
+
+/* glut_menu2.c implements the little used GLUT menu calls in
+   a distinct file from glut_menu.c for slim static linking. */
+
+/* The Win32 GLUT file win32_menu.c completely re-implements all
+   the menuing functionality implemented.  This file is used only by
+   the X Window System version of GLUT. */
+
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <errno.h>
+#include <assert.h>
+
+#include <X11/Xlib.h>
+
+#include "glutint.h"
+#include "layerutil.h"
+
+/* CENTRY */
+/* DEPRICATED, use glutMenuStatusFunc instead. */
+void APIENTRY 
+glutMenuStateFunc(GLUTmenuStateCB menuStateFunc)
+{
+  __glutMenuStatusFunc = (GLUTmenuStatusCB) menuStateFunc;
+}
+
+void APIENTRY 
+glutMenuStatusFunc(GLUTmenuStatusCB menuStatusFunc)
+{
+  __glutMenuStatusFunc = menuStatusFunc;
+}
+
+void APIENTRY 
+glutDestroyMenu(int menunum)
+{
+  GLUTmenu *menu = __glutGetMenuByNum(menunum);
+  GLUTmenuItem *item, *next;
+
+  if (__glutMappedMenu)
+    __glutMenuModificationError();
+  assert(menu->id == menunum - 1);
+  XDestroySubwindows(__glutDisplay, menu->win);
+  XDestroyWindow(__glutDisplay, menu->win);
+  __glutMenuList[menunum - 1] = NULL;
+  /* free all menu entries */
+  item = menu->list;
+  while (item) {
+    assert(item->menu == menu);
+    next = item->next;
+    free(item->label);
+    free(item);
+    item = next;
+  }
+  if (__glutCurrentMenu == menu) {
+    __glutCurrentMenu = NULL;
+  }
+  free(menu);
+}
+
+void APIENTRY 
+glutChangeToMenuEntry(int num, const char *label, int value)
+{
+  GLUTmenuItem *item;
+  int i;
+
+  if (__glutMappedMenu)
+    __glutMenuModificationError();
+  i = __glutCurrentMenu->num;
+  item = __glutCurrentMenu->list;
+  while (item) {
+    if (i == num) {
+      if (item->isTrigger) {
+        /* If changing a submenu trigger to a menu entry, we
+           need to account for submenus.  */
+        item->menu->submenus--;
+      }
+      free(item->label);
+      __glutSetMenuItem(item, label, value, False);
+      return;
+    }
+    i--;
+    item = item->next;
+  }
+  __glutWarning("Current menu has no %d item.", num);
+}
+
+void APIENTRY 
+glutChangeToSubMenu(int num, const char *label, int menu)
+{
+  GLUTmenuItem *item;
+  int i;
+
+  if (__glutMappedMenu)
+    __glutMenuModificationError();
+  i = __glutCurrentMenu->num;
+  item = __glutCurrentMenu->list;
+  while (item) {
+    if (i == num) {
+      if (!item->isTrigger) {
+        /* If changing a menu entry to as submenu trigger, we
+           need to account for submenus.  */
+        item->menu->submenus++;
+      }
+      free(item->label);
+      __glutSetMenuItem(item, label, /* base 0 */ menu - 1, True);
+      return;
+    }
+    i--;
+    item = item->next;
+  }
+  __glutWarning("Current menu has no %d item.", num);
+}
+
+void APIENTRY 
+glutRemoveMenuItem(int num)
+{
+  GLUTmenuItem *item, **prev, *remaining;
+  int pixwidth, i;
+
+  if (__glutMappedMenu)
+    __glutMenuModificationError();
+  i = __glutCurrentMenu->num;
+  prev = &__glutCurrentMenu->list;
+  item = __glutCurrentMenu->list;
+  /* If menu item is removed, the menu's pixwidth may need to
+     be recomputed. */
+  pixwidth = 1;
+  while (item) {
+    if (i == num) {
+      /* If this menu item's pixwidth is as wide as the menu's
+         pixwidth, removing this menu item will necessitate
+         shrinking the menu's pixwidth. */
+      if (item->pixwidth >= __glutCurrentMenu->pixwidth) {
+        /* Continue recalculating menu pixwidth, first skipping
+           the removed item. */
+        remaining = item->next;
+        while (remaining) {
+          if (remaining->pixwidth > pixwidth) {
+            pixwidth = remaining->pixwidth;
+          }
+          remaining = remaining->next;
+        }
+        __glutCurrentMenu->pixwidth = pixwidth;
+      }
+      __glutCurrentMenu->num--;
+      __glutCurrentMenu->managed = False;
+
+      /* Patch up menu's item list. */
+      *prev = item->next;
+
+      free(item->label);
+      free(item);
+      return;
+    }
+    if (item->pixwidth > pixwidth) {
+      pixwidth = item->pixwidth;
+    }
+    i--;
+    prev = &item->next;
+    item = item->next;
+  }
+  __glutWarning("Current menu has no %d item.", num);
+}
+
+void APIENTRY 
+glutDetachMenu(int button)
+{
+  if (__glutMappedMenu)
+    __glutMenuModificationError();
+  if (__glutCurrentWindow->menu[button] > 0) {
+    __glutCurrentWindow->buttonUses--;
+    __glutChangeWindowEventMask(ButtonPressMask | ButtonReleaseMask,
+      __glutCurrentWindow->buttonUses > 0);
+    __glutCurrentWindow->menu[button] = 0;
+  }
+}
+
+/* ENDCENTRY */