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/*
* Copyright (C) 1994 by Dave Glowacki
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* to rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* DAVE GLOWACKI BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* $Header: /usr/sww/share/src/X11R6/local/applications/xless-1.7/RCS/help.c,v 1.23 1994/07/29 02:27:40 dglo Exp $
*/
#include <fcntl.h>
#include <X11/X.h>
#include <X11/StringDefs.h>
#include <X11/Intrinsic.h>
#include <X11/Shell.h>
#include <X11/Xaw/Command.h>
#include <X11/Xaw/Paned.h>
#include "xless.h"
#include "XLessHlp.icn"
static Widget createHelp __P((Widget));
static void PopdownHelp __P((Widget, XtPointer, XtPointer));
/* Function Name: CreateHelp.
* Description: This function creates the help widget so that it will be
* ready to be displayed.
* Arguments:
* Returns: the help widget
*/
static Widget
createHelp(top)
Widget top;
{
static const char *helpIconName = NULL;
int fd;
const char *helpPage;
Widget base, pane, helpText, button;
XtCallbackRec callback[2];
XtAccelerators accel;
const String quitstr = "#override <Key>Q: set() notify() unset()\n";
/* try to open the help file */
fd = open(resources.helpFile, O_RDONLY);
if (fd == -1) {
CouldntOpen(top, resources.helpFile);
return 0;
}
helpPage = InitData(fd, NULL);
/* make sure the window title exists */
if (!helpIconName) {
char *hin;
hin = (char *)XtMalloc((Cardinal )(strlen(progname) + 6));
strcpy(hin, progname);
strcat(hin, ":help");
helpIconName = hin;
}
/* create a new application shell */
base = XtVaAppCreateShell("help", className, applicationShellWidgetClass,
disp,
XtNallowShellResize, TRUE,
XtNiconName, helpIconName,
XtNiconPixmap,
XCreateBitmapFromData(disp, XRootWindow(disp, 0),
XLessHelp_bits,
XLessHelp_width,
XLessHelp_height),
NULL);
pane = XtVaCreateManagedWidget("helpPane", panedWidgetClass, base,
NULL);
helpText = MakeText(pane, NULL, helpPage, 1);
/* set up Done button callback array */
callback[0].callback = PopdownHelp;
callback[0].closure = (XtPointer)base;
callback[1].callback = NULL;
callback[1].closure = (XtPointer)NULL;
/* set up Done button accelerator */
accel = XtParseAcceleratorTable(quitstr);
/* create Done button */
button = XtVaCreateManagedWidget("helpQuit", commandWidgetClass, pane,
XtNaccelerators, accel,
XtNcallback, callback,
XtNfont, buttonFont,
XtNlabel, "Done With Help",
NULL);
XtInstallAccelerators(helpText, button);
XtRealizeWidget(base);
return(base);
}
/* Function Name: PopdownHelp
* Description: This function pops down the help widget.
* Arguments: w - the widget we are calling back from.
* number - (closure) the number to switch on.
* junk - (call data) not used.
* Returns: none.
*/
/* ARGSUSED */
static void
PopdownHelp(w, helpWidget, junk)
Widget w;
XtPointer helpWidget, junk;
{
XtPopdown((Widget )helpWidget);
}
/* Function Name: PopupHelp
* Description: This function pops up the help widget, unless no
* help could be found.
* Arguments: w - the widget we are calling back from.
* number - (closure) the number to switch on.
* junk - (call data) not used.
* Returns: none.
*/
/* ARGSUSED */
void
PopupHelp(w, closure, callData)
Widget w;
XtPointer closure, callData;
{
WindowInfo *wi = (WindowInfo *)closure;
static Widget helpWidget = 0;
if (!helpWidget)
helpWidget = createHelp(wi ? wi->base : w);
if (helpWidget)
XtPopup(helpWidget, XtGrabNone);
}
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