/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* gos720 src/gos/2d/XTOP/contrib/programs/xditview/Dvi.c 1.2 */
/* */
/* Licensed Materials - Property of IBM */
/* */
/* COPYRIGHT International Business Machines Corp. 1996 */
/* All Rights Reserved */
/* */
/* US Government Users Restricted Rights - Use, duplication or */
/* disclosure restricted by GSA ADP Schedule Contract with IBM Corp. */
/* */
/* IBM_PROLOG_END_TAG */
/* SCCSID_BEGIN_TAG */
#ifndef lint
static char sccsid[] = "@(#)95 1.2 src/gos/2d/XTOP/contrib/programs/xditview/Dvi.c, xsample, gos720 12/9/96 15:08:48";
#endif
/* SCCSID_END_TAG */
/* $XConsortium: Dvi.c,v 1.21 94/04/17 20:43:34 keith Exp $ */
/*
Copyright (c) 1991 X Consortium
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 the 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 THE X CONSORTIUM 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.
Except as contained in this notice, the name of the X Consortium shall
not be used in advertising or otherwise to promote the sale, use or
other dealings in this Software without prior written authorization
from the X Consortium.
*/
/*
* Dvi.c - Dvi display widget
*/
#define XtStrlen(s) ((s) ? strlen(s) : 0)
/* The following are defined for the reader's convenience. Any
Xt..Field macro in this code just refers to some field in
one of the substructures of the WidgetRec. */
#include <X11/IntrinsicP.h>
#include <X11/StringDefs.h>
#include <X11/Xmu/Converters.h>
#include <stdio.h>
#include <ctype.h>
#include "DviP.h"
/****************************************************************
*
* Full class record constant
*
****************************************************************/
/* Private Data */
/* Note: default_font_map was too long a token for some machines...
* therefor it has been split in to and assigned to resources
* in the ClassInitialize routine.
*/
static char default_font_map_1[] = "\
R -*-times-medium-r-normal--*-*-*-*-*-*-iso8859-1\n\
I -*-times-medium-i-normal--*-*-*-*-*-*-iso8859-1\n\
B -*-times-bold-r-normal--*-*-*-*-*-*-iso8859-1\n\
F -*-times-bold-i-normal--*-*-*-*-*-*-iso8859-1\n\
BI -*-times-bold-i-normal--*-*-*-*-*-*-iso8859-1\n\
C -*-courier-medium-r-normal--*-*-*-*-*-*-iso8859-1\n\
CO -*-courier-medium-o-normal--*-*-*-*-*-*-iso8859-1\n\
CB -*-courier-bold-r-normal--*-*-*-*-*-*-iso8859-1\n\
CF -*-courier-bold-o-normal--*-*-*-*-*-*-iso8859-1\n\
H -*-helvetica-medium-r-normal--*-*-*-*-*-*-iso8859-1\n\
HO -*-helvetica-medium-o-normal--*-*-*-*-*-*-iso8859-1\n\
HB -*-helvetica-bold-r-normal--*-*-*-*-*-*-iso8859-1\n\
HF -*-helvetica-bold-o-normal--*-*-*-*-*-*-iso8859-1\n\
";
static char default_font_map_2[] = "\
N -*-new century schoolbook-medium-r-normal--*-*-*-*-*-*-iso8859-1\n\
NI -*-new century schoolbook-medium-i-normal--*-*-*-*-*-*-iso8859-1\n\
NB -*-new century schoolbook-bold-r-normal--*-*-*-*-*-*-iso8859-1\n\
NF -*-new century schoolbook-bold-i-normal--*-*-*-*-*-*-iso8859-1\n\
A -*-charter-medium-r-normal--*-*-*-*-*-*-iso8859-1\n\
AI -*-charter-medium-i-normal--*-*-*-*-*-*-iso8859-1\n\
AB -*-charter-bold-r-normal--*-*-*-*-*-*-iso8859-1\n\
AF -*-charter-bold-i-normal--*-*-*-*-*-*-iso8859-1\n\
S -*-symbol-medium-r-normal--*-*-*-*-*-*-adobe-fontspecific\n\
S2 -*-symbol-medium-r-normal--*-*-*-*-*-*-adobe-fontspecific\n\
";
#define offset(field) XtOffsetOf(DviRec, field)
static XtResource resources[] = {
{XtNfontMap, XtCFontMap, XtRString, sizeof (char *),
offset(dvi.font_map_string), XtRString, NULL /* set in code */},
{XtNforeground, XtCForeground, XtRPixel, sizeof (unsigned long),
offset(dvi.foreground), XtRString, XtDefaultForeground},
{XtNpageNumber, XtCPageNumber, XtRInt, sizeof (int),
offset(dvi.requested_page), XtRImmediate, (XtPointer) 1},
{XtNlastPageNumber, XtCLastPageNumber, XtRInt, sizeof (int),
offset (dvi.last_page), XtRImmediate, (XtPointer) 0},
{XtNfile, XtCFile, XtRFile, sizeof (FILE *),
offset (dvi.file), XtRFile, (char *) 0},
{XtNseek, XtCSeek, XtRBoolean, sizeof (Boolean),
offset(dvi.seek), XtRImmediate, (XtPointer) False},
{XtNfont, XtCFont, XtRFontStruct, sizeof (XFontStruct *),
offset(dvi.default_font), XtRString, XtDefaultFont},
{XtNbackingStore, XtCBackingStore, XtRBackingStore, sizeof (int),
offset(dvi.backing_store), XtRString, "default"},
{XtNnoPolyText, XtCNoPolyText, XtRBoolean, sizeof (Boolean),
offset(dvi.noPolyText), XtRImmediate, (XtPointer) False},
{XtNscreenResolution, XtCScreenResolution, XtRInt, sizeof (int),
offset(dvi.screen_resolution), XtRImmediate, (XtPointer) 75},
{XtNpageWidth, XtCPageWidth, XtRFloat, sizeof (float),
offset(dvi.page_width), XtRString, "8.5"},
{XtNpageHeight, XtCPageHeight, XtRFloat, sizeof (float),
offset(dvi.page_height), XtRString, "11"},
};
#undef offset
static void ClassInitialize ();
static void Initialize(), Realize (), Destroy (), Redisplay ();
static Boolean SetValues (), SetValuesHook ();
static XtGeometryResult QueryGeometry ();
static void ShowDvi ();
static void CloseFile (), OpenFile ();
#define SuperClass ((SimpleWidgetClass)&simpleClassRec)
DviClassRec dviClassRec = {
{
(WidgetClass) SuperClass, /* superclass */
"Dvi", /* class_name */
sizeof(DviRec), /* size */
ClassInitialize, /* class_initialize */
NULL, /* class_part_initialize */
FALSE, /* class_inited */
Initialize, /* initialize */
NULL, /* initialize_hook */
Realize, /* realize */
NULL, /* actions */
0, /* num_actions */
resources, /* resources */
XtNumber(resources), /* resource_count */
NULLQUARK, /* xrm_class */
FALSE, /* compress_motion */
TRUE, /* compress_exposure */
TRUE, /* compress_enterleave */
FALSE, /* visible_interest */
Destroy, /* destroy */
NULL, /* resize */
Redisplay, /* expose */
SetValues, /* set_values */
SetValuesHook, /* set_values_hook */
XtInheritSetValuesAlmost, /* set_values_almost */
NULL, /* get_values_hook */
NULL, /* accept_focus */
XtVersion, /* version */
NULL, /* callback_private */
0, /* tm_table */
QueryGeometry, /* query_geometry */
XtInheritDisplayAccelerator, /* display_accelerator */
NULL, /* extension */
}, /* CoreClass fields initialization */
{
XtInheritChangeSensitive /* change_sensitive */
}, /* SimpleClass fields initialization */
{
0, /* field not used */
}, /* DviClass fields initialization */
};
WidgetClass dviWidgetClass = (WidgetClass) &dviClassRec;
static void ClassInitialize ()
{
int len1 = strlen(default_font_map_1);
int len2 = strlen(default_font_map_2);
char *dfm = XtMalloc(len1 + len2 + 1);
char *ptr = dfm;
strcpy(ptr, default_font_map_1); ptr += len1;
strcpy(ptr, default_font_map_2);
resources[0].default_addr = dfm;
XtAddConverter( XtRString, XtRBackingStore, XmuCvtStringToBackingStore,
NULL, 0 );
}
/****************************************************************
*
* Private Procedures
*
****************************************************************/
/* ARGSUSED */
static void Initialize(request, new, args, num_args)
Widget request, new;
ArgList args;
Cardinal *num_args;
{
DviWidget dw = (DviWidget) new;
dw->dvi.tmpFile = 0;
dw->dvi.readingTmp = 0;
dw->dvi.ungot = 0;
dw->dvi.normal_GC = 0;
dw->dvi.file_map = 0;
dw->dvi.fonts = 0;
dw->dvi.font_map = 0;
dw->dvi.current_page = 0;
dw->dvi.font_size = 0;
dw->dvi.font_number = 0;
dw->dvi.device_resolution = 0;
dw->dvi.line_width = 0;
dw->dvi.line_style = 0;
dw->dvi.font = 0;
dw->dvi.display_enable = 0;
dw->dvi.scale = 0.0;
dw->dvi.state = 0;
dw->dvi.cache.index = 0;
dw->dvi.cache.font = 0;
dw->dvi.file = 0;
dw->dvi.seek=False;
dw->dvi.backing_store=0;
RequestDesiredSize (dw);
}
static void
Realize (w, valueMask, attrs)
Widget w;
XtValueMask *valueMask;
XSetWindowAttributes *attrs;
{
DviWidget dw = (DviWidget) w;
XGCValues values;
if (dw->dvi.backing_store != Always + WhenMapped + NotUseful) {
attrs->backing_store = dw->dvi.backing_store;
*valueMask |= CWBackingStore;
}
XtCreateWindow (w, (unsigned)InputOutput, (Visual *) CopyFromParent,
*valueMask, attrs);
values.foreground = dw->dvi.foreground;
dw->dvi.normal_GC = XCreateGC (XtDisplay (w), XtWindow (w),
GCForeground, &values);
if (dw->dvi.file)
OpenFile (dw);
ParseFontMap (dw);
}
static void
Destroy(w)
Widget w;
{
DviWidget dw = (DviWidget) w;
XFreeGC (XtDisplay (w), dw->dvi.normal_GC);
DestroyFontMap (dw->dvi.font_map);
DestroyFileMap (dw->dvi.file_map);
}
/*
* Repaint the widget window
*/
/* ARGSUSED */
static void
Redisplay(w, event, region)
Widget w;
XEvent *event;
Region region;
{
DviWidget dw = (DviWidget) w;
XRectangle extents;
XClipBox (region, &extents);
dw->dvi.extents.x1 = extents.x;
dw->dvi.extents.y1 = extents.y;
dw->dvi.extents.x2 = extents.x + extents.width;
dw->dvi.extents.y2 = extents.y + extents.height;
ShowDvi (dw);
}
RequestDesiredSize (dw)
DviWidget dw;
{
XtWidgetGeometry req, rep;
dw->dvi.desired_width = dw->dvi.page_width *
dw->dvi.screen_resolution;
dw->dvi.desired_height = dw->dvi.page_height *
dw->dvi.screen_resolution;
req.request_mode = CWWidth|CWHeight;
req.width = dw->dvi.desired_width;
req.height = dw->dvi.desired_height;
XtMakeGeometryRequest ((Widget) dw, &req, &rep);
}
/*
* Set specified arguments into widget
*/
/* ARGSUSED */
static Boolean
SetValues (wcurrent, wrequest, wnew, args, num_args)
Widget wcurrent, wrequest, wnew;
ArgList args;
Cardinal *num_args;
{
DviWidget current = (DviWidget) wcurrent;
DviWidget request = (DviWidget) wrequest;
DviWidget new = (DviWidget) wnew;
Boolean redisplay = FALSE;
char *new_map;
int cur, req;
req = request->dvi.requested_page;
cur = current->dvi.requested_page;
if (cur != req) {
if (req < 1)
req = 1;
if (request->dvi.file)
{
if (current->dvi.last_page != 0 &&
req > current->dvi.last_page)
req = current->dvi.last_page;
}
if (cur != req)
redisplay = TRUE;
new->dvi.requested_page = req;
}
if (current->dvi.font_map_string != request->dvi.font_map_string) {
new_map = XtMalloc (strlen (request->dvi.font_map_string) + 1);
if (new_map) {
redisplay = TRUE;
strcpy (new_map, request->dvi.font_map_string);
new->dvi.font_map_string = new_map;
if (current->dvi.font_map_string)
XtFree (current->dvi.font_map_string);
current->dvi.font_map_string = 0;
ParseFontMap (new);
}
}
if (current->dvi.screen_resolution != request->dvi.screen_resolution)
{
ResetFonts (new);
new->dvi.line_width = -1;
}
if (request->dvi.device_resolution)
new->dvi.scale = ((double) request->dvi.screen_resolution) /
((double) request->dvi.device_resolution);
if (current->dvi.page_width != request->dvi.page_width ||
current->dvi.page_height != request->dvi.page_height ||
current->dvi.screen_resolution != request->dvi.screen_resolution)
{
RequestDesiredSize (new);
redisplay = TRUE;
}
return redisplay;
}
/*
* use the set_values_hook entry to check when
* the file is set
*/
static Boolean
SetValuesHook (widget, args, num_argsp)
Widget widget;
ArgList args;
Cardinal *num_argsp;
{
DviWidget dw = (DviWidget) widget;
Cardinal i;
for (i = 0; i < *num_argsp; i++) {
if (!strcmp (args[i].name, XtNfile)) {
CloseFile (dw);
OpenFile (dw);
return TRUE;
}
}
return FALSE;
}
static void CloseFile (dw)
DviWidget dw;
{
if (dw->dvi.tmpFile)
fclose (dw->dvi.tmpFile);
ForgetPagePositions (dw);
}
static void OpenFile (dw)
DviWidget dw;
{
char tmpName[sizeof ("/tmp/dviXXXXXX")];
dw->dvi.tmpFile = 0;
if (!dw->dvi.seek) {
strcpy (tmpName, "/tmp/dviXXXXXX");
mktemp (tmpName);
dw->dvi.tmpFile = fopen (tmpName, "w+");
unlink (tmpName);
}
if (dw->dvi.requested_page < 1)
dw->dvi.requested_page = 1;
dw->dvi.last_page = 0;
}
static XtGeometryResult
QueryGeometry (w, request, geometry_return)
Widget w;
XtWidgetGeometry *request, *geometry_return;
{
XtGeometryResult ret;
DviWidget dw = (DviWidget) w;
ret = XtGeometryYes;
if ((int)request->width < dw->dvi.desired_width
|| (int)request->height < dw->dvi.desired_height)
ret = XtGeometryAlmost;
geometry_return->width = dw->dvi.desired_width;
geometry_return->height = dw->dvi.desired_height;
geometry_return->request_mode = CWWidth|CWHeight;
return ret;
}
SetDeviceResolution (dw, resolution)
DviWidget dw;
int resolution;
{
if (resolution != dw->dvi.device_resolution) {
dw->dvi.device_resolution = resolution;
dw->dvi.scale = ((double) dw->dvi.screen_resolution) /
((double) resolution);
if (dw->dvi.state)
dw->dvi.state->line_width =
FontSizeInDevice(dw, dw->dvi.state->line_width/10.0);
}
}
static void
ShowDvi (dw)
DviWidget dw;
{
int i;
long file_position;
if (!dw->dvi.file)
return;
if (dw->dvi.requested_page < 1)
dw->dvi.requested_page = 1;
if (dw->dvi.last_page != 0 && dw->dvi.requested_page > dw->dvi.last_page)
dw->dvi.requested_page = dw->dvi.last_page;
file_position = SearchPagePosition (dw, dw->dvi.requested_page);
if (file_position != -1) {
FileSeek(dw, file_position);
dw->dvi.current_page = dw->dvi.requested_page;
} else {
for (i=dw->dvi.requested_page; i > 0; i--) {
file_position = SearchPagePosition (dw, i);
if (file_position != -1)
break;
}
if (file_position == -1)
file_position = 0;
FileSeek (dw, file_position);
dw->dvi.current_page = i;
dw->dvi.display_enable = 0;
while (dw->dvi.current_page != dw->dvi.requested_page) {
dw->dvi.current_page = ParseInput (dw);
/*
* at EOF, seek back to the begining of this page.
*/
if (feof (dw->dvi.file)) {
file_position = SearchPagePosition (dw,
dw->dvi.current_page);
if (file_position != -1)
FileSeek (dw, file_position);
break;
}
}
}
dw->dvi.display_enable = 1;
ParseInput (dw);
if (dw->dvi.last_page && dw->dvi.requested_page > dw->dvi.last_page)
dw->dvi.requested_page = dw->dvi.last_page;
}