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/* Help for the X11 interface to Xconq.
Copyright (C) 1991-1995, 1997 Stanley T. Shebs.
Xconq is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version. See the file COPYING. */
#include "conq.h"
#include "xconq.h"
void update_help PARAMS ((Side *side));
/* (node stack code should go to ui.[ch]) */
#define NODESTACKSIZE 100
static void describe_map PARAMS ((int arg, char *key, TextBuffer *buf));
static void help_next_callback PARAMS ((Widget w, XtPointer client_data,
XtPointer call_data));
static void help_prev_callback PARAMS ((Widget w, XtPointer client_data,
XtPointer call_data));
static void help_back_callback PARAMS ((Widget w, XtPointer client_data,
XtPointer call_data));
static void help_close_callback PARAMS ((Widget w, XtPointer client_data,
XtPointer call_data));
static void interp_help_command PARAMS ((Side *side, int ch));
static void jump_to_help_node PARAMS ((Side *side, int i));
static void help_topic_callback PARAMS ((Widget w, XtPointer dummy,
XawListReturnStruct *list));
static char **nodetitles;
static void
describe_map(arg, key, buf)
int arg;
char *key;
TextBuffer *buf;
{
#define SCB(s) tbcat(buf,s)
SCB("In move mode:\n");
SCB(" The next unit that can do anything will be selected automatically.\n");
SCB(" Left-click on a destination to move the selected unit there.\n");
SCB(" To select a unit, center-click it.\n");
SCB("\n");
SCB("In look mode:\n");
SCB(" Left-click on a unit to make the current one.\n");
SCB(" To move it, right-click, use 'm'ove command or 'z' to switch back ");
SCB("to move mode.\n");
SCB("\n");
#ifdef DESIGNERS
SCB("In design mode:\n");
SCB(" Left-click to perform the tool-specific action: add unit or paint ");
SCB("terrain, population, or feature.\n");
SCB(" Shift-left-click to perform the tool-specific current object ");
SCB("selection: pick current unit type, terrain type, side, or feature.\n");
SCB("\n");
#endif /* DESIGNERS */
SCB("In any mode:\n");
SCB(" Center-click on a unit or cell to make the current one.\n");
SCB(" Drag-shift-center-click to measure distance (gasp! hold down Shift, ");
SCB("press center button at origin, drag to destination, release button ");
SCB("and Shift).\n");
SCB(" Right-click on a destination to move the selected unit there.\n");
SCB(" Move the mouse while holding Meta to change the current cell.\n");
SCB(" Press a keypad key to scroll the look.\n");
#undef SCB
}
static void
help_topic_callback (w, dummy, list)
Widget w;
XtPointer dummy;
XawListReturnStruct *list;
{
Side *side;
if (!find_side_via_widget(w, &side))
return;
jump_to_help_node(side, list->list_index);
}
static void
jump_to_help_node(side, i)
Side *side;
int i;
{
i = i % side->ui->nodenumber;
if (i < 0)
i += side->ui->nodenumber;
XawListHighlight(side->ui->help_topicList, i);
side->ui->curhelpnode = side->ui->nodestack[i];
side->ui->nodestackpos = i;
update_help(side);
}
void
create_help(side)
Side *side;
{
int i;
HelpNode *hnp;
add_help_node("map", describe_map, 0, first_help_node);
/* initialize node stack */
if (side->ui->nodestack == NULL)
side->ui->nodestack =
(HelpNode **) xmalloc(1000 * sizeof(HelpNode *));
for (i = 0, hnp = first_help_node;
hnp && (hnp != first_help_node || i == 0); hnp = hnp->next) {
side->ui->nodestack[i++] = hnp;
}
side->ui->nodenumber = i;
nodetitles = (char **) xmalloc((side->ui->nodenumber+1)*sizeof(char *));
for (i = 0; i < side->ui->nodenumber; i++) {
nodetitles[i] = side->ui->nodestack[i]->key;
}
nodetitles[side->ui->nodenumber] = NULL;
side->ui->help_shell =
XtVaCreatePopupShell("helpShell", topLevelShellWidgetClass,
side->ui->shell, NULL);
side->ui->help_form =
XtVaCreateManagedWidget("form", formWidgetClass,
side->ui->help_shell, NULL);
side->ui->help_title =
XtVaCreateManagedWidget("title", labelWidgetClass, side->ui->help_form,
XtNlabel, "",
XtNtop, XawChainTop,
XtNbottom, XawChainTop,
XtNleft, XawChainLeft,
XtNright, XawChainRight,
NULL);
side->ui->help_topicPort =
XtVaCreateManagedWidget("topicPort", viewportWidgetClass, side->ui->help_form,
XtNallowVert, True,
XtNfromVert, side->ui->help_title,
XtNtop, XawChainTop,
XtNbottom, XawChainBottom,
XtNleft, XawChainLeft,
XtNright, XawChainLeft,
NULL);
side->ui->help_topicList =
XtVaCreateManagedWidget("topicList", listWidgetClass, side->ui->help_topicPort,
XtNbottom, XawChainTop,
XtNverticalList, True,
XtNforceColumns, True,
XtNdefaultColumns, 1,
NULL);
XawListChange(side->ui->help_topicList,
nodetitles, side->ui->nodenumber, 0, True);
XtAddCallback(side->ui->help_topicList, XtNcallback,
(XtCallbackProc) help_topic_callback, (XtPointer) NULL);
side->ui->help_text =
XtVaCreateManagedWidget("text", asciiTextWidgetClass, side->ui->help_form,
XtNdisplayCaret, False,
XtNeditType, XawtextRead,
/* XtNscrollHorizontal, XawtextScrollWhenNeeded, */
XtNscrollVertical, XawtextScrollAlways,
XtNwrap, XawtextWrapWord,
XtNfromVert, side->ui->help_title,
XtNfromHoriz, side->ui->help_topicPort,
XtNtop, XawChainTop,
XtNbottom, XawChainBottom,
XtNleft, XawChainLeft,
XtNright, XawChainRight,
NULL);
side->ui->help_next =
XtVaCreateManagedWidget("next", commandWidgetClass, side->ui->help_form,
XtNlabel, "Next",
XtNfromVert, side->ui->help_text,
XtNtop, XawChainBottom,
XtNbottom, XawChainBottom,
XtNleft, XawChainLeft,
XtNright, XawChainLeft,
NULL);
XtAddCallback(side->ui->help_next, XtNcallback, help_next_callback, NULL);
side->ui->help_prev =
XtVaCreateManagedWidget("prev", commandWidgetClass, side->ui->help_form,
XtNlabel, "Prev",
XtNfromHoriz, side->ui->help_next,
XtNfromVert, side->ui->help_text,
XtNtop, XawChainBottom,
XtNbottom, XawChainBottom,
XtNleft, XawChainLeft,
XtNright, XawChainLeft,
NULL);
XtAddCallback(side->ui->help_prev, XtNcallback, help_prev_callback, NULL);
side->ui->help_back =
XtVaCreateManagedWidget("back", commandWidgetClass, side->ui->help_form,
XtNlabel, "Back",
XtNfromHoriz, side->ui->help_prev,
XtNfromVert, side->ui->help_text,
XtNtop, XawChainBottom,
XtNbottom, XawChainBottom,
XtNleft, XawChainLeft,
XtNright, XawChainLeft,
NULL);
XtAddCallback(side->ui->help_back, XtNcallback, help_back_callback, NULL);
side->ui->help_close =
XtVaCreateManagedWidget("close", commandWidgetClass, side->ui->help_form,
XtNlabel, "Close",
XtNfromHoriz, side->ui->help_back,
XtNfromVert, side->ui->help_text,
XtNtop, XawChainBottom,
XtNbottom, XawChainBottom,
XtNleft, XawChainLeft,
XtNright, XawChainLeft,
NULL);
XtAddCallback(side->ui->help_close, XtNcallback, help_close_callback, NULL);
XtRealizeWidget(side->ui->help_shell);
/* which is the most useful help page to display at startup? */
jump_to_help_node (side, 2);
}
static void
help_next_callback(w, client_data, call_data)
Widget w;
XtPointer client_data;
XtPointer call_data;
{
Side *side;
if (find_side_via_widget(w, &side)) {
interp_help_command(side, 'n');
}
}
static void
help_prev_callback(w, client_data, call_data)
Widget w;
XtPointer client_data;
XtPointer call_data;
{
Side *side;
if (find_side_via_widget(w, &side)) {
interp_help_command(side, 'p');
}
}
static void
help_back_callback(w, client_data, call_data)
Widget w;
XtPointer client_data;
XtPointer call_data;
{
Side *side;
if (find_side_via_widget(w, &side)) {
interp_help_command(side, 'b');
}
}
static void
help_close_callback(w, client_data, call_data)
Widget w;
XtPointer client_data;
XtPointer call_data;
{
Side *side;
if (find_side_via_widget(w, &side)) {
popdown_help(side);
}
}
/* Keyboard command interpretation for the help window. */
static void
interp_help_command(side, ch)
Side *side;
int ch;
{
int i;
switch (ch) {
case 'n':
i = side->ui->nodestackpos+1;
break;
case 'p':
i = side->ui->nodestackpos-1;
break;
case 'b':
if (side->ui->nodestackpos <= 0) {
beep(side);
return;
}
i = side->ui->nodestackpos-1;
break;
case 't':
i = 0;
break;
default:
abort(); /* should never happen */
}
jump_to_help_node(side, i);
}
void
update_help(side)
Side *side;
{
char *keystr, *helpstr;
if (!side->ui->help_shell)
return;
if (side->ui->curhelpnode == NULL)
return; /* (should never happen?) */
/* Update the topic title widget. */
keystr = side->ui->curhelpnode->key;
if (keystr == NULL)
keystr = "???";
nargs = 0;
XtSetArg(tmpargs[nargs], XtNlabel, keystr); nargs++;
XtSetValues(side->ui->help_title, tmpargs, nargs);
/* Update the help info proper. */
helpstr = get_help_text(side->ui->curhelpnode);
if (helpstr == NULL)
helpstr = "???";
/* This shouldn't be necessary, but apparently some text widgets
go berserk when handed zero-length strings. (This happens
on several different platforms.) */
if (strlen(helpstr) == 0)
helpstr = " ";
nargs = 0;
XtSetArg(tmpargs[nargs], XtNstring, helpstr); nargs++;
XtSetArg(tmpargs[nargs], XtNlength, strlen(helpstr)); nargs++;
XtSetArg(tmpargs[nargs], XtNinsertPosition, 0); nargs++;
XtSetValues(side->ui->help_text, tmpargs, nargs);
}
void
popup_help(side)
Side *side;
{
if (!side->ui->help_shell) {
create_help(side);
update_help(side);
XSetWMProtocols(side->ui->dpy, XtWindow(side->ui->help_shell),
&side->ui->kill_atom, 1);
XtOverrideTranslations(side->ui->help_shell,
XtParseTranslationTable("<Message>WM_PROTOCOLS: wm-quit()"));
}
XtPopup(side->ui->help_shell, XtGrabNone);
/* Expose event will cause window contents to be drawn now. */
}
void
popdown_help(side)
Side *side;
{
if (side->ui->help_shell)
XtPopdown(side->ui->help_shell);
}
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