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diff --git a/oldXMenu/Activate.c b/oldXMenu/Activate.c
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+/* $Header: Activate.c,v 1.16 88/02/02 19:08:46 jim Exp $ */
+/* Copyright Massachusetts Institute of Technology 1985 */
+
+#include "copyright.h"
+
+/*
+ * XMenu: MIT Project Athena, X Window system menu package
+ *
+ * XMenuActivate - Maps a given menu to the display and activates
+ * the menu for user selection. The user is allowed to
+ * specify which pane and selection will be current,
+ * the X and Y location of the menu (relative to the
+ * parent window) and the mouse button event mask that
+ * will be used to identify a selection request.
+ *
+ * A menu selection is shown to be current by placing
+ * a highlight box around the selection as the mouse
+ * cursor enters its active region. Inactive selections
+ * will not be highlited. As the mouse cursor moved
+ * from one menu pane to another menu pane the pane being
+ * entered is raised and made current and the pane being
+ * left is lowered.
+ *
+ * Anytime XMenuActivate returns, the p_num and
+ * s_num are left at their last known values (i.e.,
+ * the last known current pane and selection indices).
+ * The following are the defined return states:
+ *
+ * 1) If at any time an error occurs the data
+ * pointer is left untouched and XM_FAILURE
+ * is returned.
+ *
+ * 2) When a selection request is recieved (i.e.,
+ * when the specified mouse event occurs) the
+ * data pointer will be set to the data
+ * associated with the particular selection
+ * current at the time of the selection request
+ * and XM_SUCCESS is returned.
+ *
+ * 3) If no selection was current at the time a
+ * selection request is made the data pointer
+ * will be left untouched and XM_NO_SELECT will
+ * be returned.
+ *
+ * 4) If the selection that was current at the time
+ * a selection request is made is not an active
+ * selection the data pointer will be left
+ * untouched and XM_IA_SELECT will be returned.
+ *
+ * Since X processes events in an asynchronous manner
+ * it is likely that XMenuActivate will encounter
+ * a "foreign event" while it is executing. Foreign
+ * events are handled in one of three ways:
+ *
+ * 1) The event is discarded. This is the default
+ * mode and requires no action on the part of the
+ * application.
+ *
+ * 2) The application has identified an asynchronous
+ * event handler that will be called and the
+ * foreign event handed off to it. Note:
+ * AEQ mode disables this mode temporarily.
+ *
+ * 3) The application has enabled asynchronous event
+ * queueing mode. In this mode all foreign events
+ * will be queued up untill XMenuActivate
+ * terminates; at which time they will be
+ * returned to the X event queue. As long as
+ * AEQ mode is enabled any asynchronous event
+ * handler as temporarily disabled.
+ *
+ * Any events encountered while taking down the menu
+ * (i.e., exposure events from occluded windows) will
+ * automatically be returned to the X event queue after
+ * XMenuActivate has cleaned the queue of any of its own
+ * events that are no longer needed.
+ *
+ * Author: Tony Della Fera, DEC
+ * March 12, 1986
+ *
+ */
+
+#include "XMenuInt.h"
+
+int
+XMenuActivate(display, menu, p_num, s_num, x_pos, y_pos, event_mask, data)
+ register Display *display; /* Display to put menu on. */
+ register XMenu *menu; /* Menu to activate. */
+ int *p_num; /* Pane number selected. */
+ int *s_num; /* Selection number selected. */
+ int x_pos; /* X coordinate of menu position. */
+ int y_pos; /* Y coordinate of menu position. */
+ unsigned int event_mask; /* Mouse button event mask. */
+ char **data; /* Pointer to return data value. */
+{
+ int status; /* X routine call status. */
+ int orig_x; /* Upper left menu origin X coord. */
+ int orig_y; /* Upper left menu origin Y coord. */
+ int ret_val; /* Return value. */
+
+ register XMPane *p_ptr; /* Current XMPane. */
+ register XMPane *event_xmp; /* Event XMPane pointer. */
+ register XMPane *cur_p; /* Current pane. */
+ register XMSelect *cur_s; /* Current selection. */
+ XMWindow *event_xmw; /* Event XMWindow pointer. */
+ XEvent event; /* X input event. */
+ XEvent peek_event; /* X input peek ahead event. */
+
+ Bool selection = False; /* Selection has been made. */
+ Bool forward = True; /* Moving forward in the pane list. */
+
+ Window root, child;
+ int root_x, root_y, win_x, win_y;
+ unsigned int mask;
+
+ /*
+ * Define and allocate a foreign event queue to hold events
+ * that don't belong to XMenu. These events are later restored
+ * to the X event queue.
+ */
+ typedef struct _xmeventque {
+ XEvent event;
+ struct _xmeventque *next;
+ } XMEventQue;
+
+ XMEventQue *feq = NULL; /* Foreign event queue. */
+ XMEventQue *feq_tmp; /* Foreign event queue temporary. */
+
+ /*
+ * If there are no panes in the menu then return failure
+ * because the menu is not initialized.
+ */
+ if (menu->p_count == 0) {
+ _XMErrorCode = XME_NOT_INIT;
+ return(XM_FAILURE);
+ }
+
+ /*
+ * Find the desired current pane.
+ */
+ cur_p = _XMGetPanePtr(menu, *p_num);
+ if (cur_p == NULL) {
+ return(XM_FAILURE);
+ }
+ cur_p->activated = cur_p->active;
+
+ /*
+ * Find the desired current selection.
+ * If the current selection index is out of range a null current selection
+ * will be assumed and the cursor will be placed in the current pane
+ * header.
+ */
+ cur_s = _XMGetSelectionPtr(cur_p, *s_num);
+
+ /*
+ * Compute origin of menu so that cursor is in
+ * Correct pane and selection.
+ */
+ _XMTransToOrigin(display,
+ menu,
+ cur_p, cur_s,
+ x_pos, y_pos,
+ &orig_x, &orig_y);
+ menu->x_pos = orig_x; /* Store X and Y coords of menu. */
+ menu->y_pos = orig_y;
+
+ if (XMenuRecompute(display, menu) == XM_FAILURE) {
+ return(XM_FAILURE);
+ }
+
+ /*
+ * Flush the window creation queue.
+ * This batches all window creates since lazy evaluation
+ * is more efficient than individual evaluation.
+ * This routine also does an XFlush().
+ */
+ if (_XMWinQueFlush(display, menu, cur_p, cur_s) == _FAILURE) {
+ return(XM_FAILURE);
+ }
+
+ /*
+ * Make sure windows are in correct order (in case we were passed
+ * an already created menu in incorrect order.)
+ */
+ for(p_ptr = menu->p_list->next; p_ptr != cur_p; p_ptr = p_ptr->next)
+ XRaiseWindow(display, p_ptr->window);
+ for(p_ptr = menu->p_list->prev; p_ptr != cur_p->prev; p_ptr = p_ptr->prev)
+ XRaiseWindow(display, p_ptr->window);
+
+ /*
+ * Make sure all selection windows are mapped.
+ */
+ for (
+ p_ptr = menu->p_list->next;
+ p_ptr != menu->p_list;
+ p_ptr = p_ptr->next
+ ){
+ XMapSubwindows(display, p_ptr->window);
+ }
+
+ /*
+ * Synchronize the X buffers and the event queue.
+ * From here on, all events in the queue that don't belong to
+ * XMenu are sent back to the application via an application
+ * provided event handler or discarded if the application has
+ * not provided an event handler.
+ */
+ XSync(display, 0);
+
+ /*
+ * Grab the mouse for menu input.
+ */
+
+ status = XGrabPointer(
+ display,
+ menu->parent,
+ True,
+ event_mask,
+ GrabModeAsync,
+ GrabModeAsync,
+ None,
+ menu->mouse_cursor,
+ CurrentTime
+ );
+ if (status == _X_FAILURE) {
+ _XMErrorCode = XME_GRAB_MOUSE;
+ return(XM_FAILURE);
+ }
+
+ /*
+ * Map the menu panes.
+ */
+ XMapWindow(display, cur_p->window);
+ for (p_ptr = menu->p_list->next;
+ p_ptr != cur_p;
+ p_ptr = p_ptr->next)
+ XMapWindow(display, p_ptr->window);
+ for (p_ptr = cur_p->next;
+ p_ptr != menu->p_list;
+ p_ptr = p_ptr->next)
+ XMapWindow(display, p_ptr->window);
+
+ XRaiseWindow(display, cur_p->window); /* Make sure current */
+ /* pane is on top. */
+
+ cur_s = NULL; /* Clear current selection. */
+
+ /*
+ * Begin event processing loop.
+ */
+ while (1) {
+ XNextEvent(display, &event); /* Get next event. */
+ switch (event.type) { /* Dispatch on the event type. */
+ case Expose:
+ event_xmp = (XMPane *)XLookUpAssoc(display,
+ menu->assoc_tab,
+ event.xexpose.window);
+ if (event_xmp == NULL) {
+ /*
+ * If AEQ mode is enabled then queue the event.
+ */
+ if (menu->aeq) {
+ feq_tmp = (XMEventQue *)malloc(sizeof(XMEventQue));
+ if (feq_tmp == NULL) {
+ _XMErrorCode = XME_CALLOC;
+ return(XM_FAILURE);
+ }
+ feq_tmp->event = event;
+ feq_tmp->next = feq;
+ feq = feq_tmp;
+ }
+ else if (_XMEventHandler) (*_XMEventHandler)(&event);
+ break;
+ }
+ if (event_xmp->activated) {
+ XSetWindowBackground(display,
+ event_xmp->window,
+ menu->bkgnd_color);
+ }
+ else {
+ XSetWindowBackgroundPixmap(display,
+ event_xmp->window,
+ menu->inact_pixmap);
+ }
+ _XMRefreshPane(display, menu, event_xmp);
+ break;
+ case EnterNotify:
+ /*
+ * First wait a small period of time, and see
+ * if another EnterNotify event follows hard on the
+ * heels of this one. i.e., the user is simply
+ * "passing through". If so, ignore this one.
+ */
+
+ event_xmw = (XMWindow *)XLookUpAssoc(display,
+ menu->assoc_tab,
+ event.xcrossing.window);
+ if (event_xmw == NULL) break;
+ if (event_xmw->type == SELECTION) {
+ /*
+ * We have entered a selection.
+ */
+ /* if (XPending(display) == 0) usleep(150000); */
+ if (XPending(display) != 0) {
+ XPeekEvent(display, &peek_event);
+ if(peek_event.type == LeaveNotify) {
+ break;
+ }
+ }
+ cur_s = (XMSelect *)event_xmw;
+ /*
+ * If the pane we are in is active and the
+ * selection entered is active then activate
+ * the selection.
+ */
+ if (cur_p->active && cur_s->active) {
+ cur_s->activated = 1;
+ _XMRefreshSelection(display, menu, cur_s);
+ }
+ }
+ else {
+ /*
+ * We have entered a pane.
+ */
+ /* if (XPending(display) == 0) usleep(150000); */
+ if (XPending(display) != 0) {
+ XPeekEvent(display, &peek_event);
+ if (peek_event.type == EnterNotify) break;
+ }
+ XQueryPointer(display,
+ menu->parent,
+ &root, &child,
+ &root_x, &root_y,
+ &win_x, &win_y,
+ &mask);
+ event_xmp = (XMPane *)XLookUpAssoc(display,
+ menu->assoc_tab,
+ child);
+ if (event_xmp == NULL) break;
+ if (event_xmp == cur_p) break;
+ if (event_xmp->serial > cur_p->serial) forward = True;
+ else forward = False;
+ p_ptr = cur_p;
+ while (p_ptr != event_xmp) {
+ if (forward) p_ptr = p_ptr->next;
+ else p_ptr = p_ptr->prev;
+ XRaiseWindow(display, p_ptr->window);
+ }
+ if (cur_p->activated) {
+ cur_p->activated = False;
+ XSetWindowBackgroundPixmap(display,
+ cur_p->window,
+ menu->inact_pixmap);
+ _XMRefreshPane(display, menu, cur_p);
+ }
+ if (event_xmp->active) event_xmp->activated = True;
+ cur_p = event_xmp;
+ }
+ break;
+ case LeaveNotify:
+ event_xmw = (XMWindow *)XLookUpAssoc(
+ display,
+ menu->assoc_tab,
+ event.xcrossing.window
+ );
+ if (event_xmw == NULL) break;
+ if(cur_s == NULL) break;
+
+ /*
+ * If the current selection was activated then
+ * deactivate it.
+ */
+ if (cur_s->activated) {
+ cur_s->activated = False;
+ _XMRefreshSelection(display, menu, cur_s);
+ }
+ cur_s = NULL;
+ break;
+
+ case ButtonPress:
+ case ButtonRelease:
+ *p_num = cur_p->serial;
+ /*
+ * Check to see if there is a current selecion.
+ */
+ if (cur_s != NULL) {
+ /*
+ * Set the selection number to the current selection.
+ */
+ *s_num = cur_s->serial;
+ /*
+ * If the current selection was activated then
+ * we have a valid selection otherwise we have
+ * an inactive selection.
+ */
+ if (cur_s->activated) {
+ *data = cur_s->data;
+ ret_val = XM_SUCCESS;
+ }
+ else {
+ ret_val = XM_IA_SELECT;
+ }
+ }
+ else {
+ /*
+ * No selection was current.
+ */
+ ret_val = XM_NO_SELECT;
+ }
+ selection = True;
+ break;
+ default:
+ /*
+ * If AEQ mode is enabled then queue the event.
+ */
+ if (menu->aeq) {
+ feq_tmp = (XMEventQue *)malloc(sizeof(XMEventQue));
+ if (feq_tmp == NULL) {
+ _XMErrorCode = XME_CALLOC;
+ return(XM_FAILURE);
+ }
+ feq_tmp->event = event;
+ feq_tmp->next = feq;
+ feq = feq_tmp;
+ }
+ else if (_XMEventHandler) (*_XMEventHandler)(&event);
+ }
+ /*
+ * If a selection has been made, break out of the event loop.
+ */
+ if (selection == True) break;
+ }
+
+ /*
+ * Unmap the menu.
+ */
+ for ( p_ptr = menu->p_list->next;
+ p_ptr != menu->p_list;
+ p_ptr = p_ptr->next)
+ {
+ XUnmapWindow(display, p_ptr->window);
+ }
+
+ /*
+ * Ungrab the mouse.
+ */
+ XUngrabPointer(display, CurrentTime);
+
+ /*
+ * Restore bits under where the menu was if we managed
+ * to save them and free the pixmap.
+ */
+
+ /*
+ * If there is a current selection deactivate it.
+ */
+ if (cur_s != NULL) cur_s->activated = 0;
+
+ /*
+ * Deactivate the current pane.
+ */
+ cur_p->activated = 0;
+ XSetWindowBackgroundPixmap(display, cur_p->window, menu->inact_pixmap);
+
+ /*
+ * Synchronize the X buffers and the X event queue.
+ */
+ XSync(display, 0);
+
+ /*
+ * Dispatch any events remaining on the queue.
+ */
+ while (QLength(display)) {
+ /*
+ * Fetch the next event.
+ */
+ XNextEvent(display, &event);
+
+ /*
+ * Discard any events left on the queue that belong to XMenu.
+ * All others are held and then returned to the event queue.
+ */
+ switch (event.type) {
+ case Expose:
+ case EnterNotify:
+ case LeaveNotify:
+ case ButtonPress:
+ case ButtonRelease:
+ /*
+ * Does this event belong to one of XMenu's windows?
+ * If so, discard it and process the next event.
+ * If not fall through and treat it as a foreign event.
+ */
+ event_xmp = (XMPane *)XLookUpAssoc(
+ display,
+ menu->assoc_tab,
+ event.xbutton.window
+ );
+ if (event_xmp != NULL) continue;
+ default:
+ /*
+ * This is a foreign event.
+ * Queue it for later return to the X event queue.
+ */
+ feq_tmp = (XMEventQue *)malloc(sizeof(XMEventQue));
+ if (feq_tmp == NULL) {
+ _XMErrorCode = XME_CALLOC;
+ return(XM_FAILURE);
+ }
+ feq_tmp->event = event;
+ feq_tmp->next = feq;
+ feq = feq_tmp;
+ }
+ }
+ /*
+ * Return any foreign events that were queued to the X event queue.
+ */
+ while (feq != NULL) {
+ feq_tmp = feq;
+ XPutBackEvent(display, &feq_tmp->event);
+ feq = feq_tmp->next;
+ free((char *)feq_tmp);
+ }
+
+ /*
+ * Return successfully.
+ */
+ _XMErrorCode = XME_NO_ERROR;
+ return(ret_val);
+
+}
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