545 lines
14 KiB
C
545 lines
14 KiB
C
#ifndef SABER
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#ifndef lint
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static char Xrcsid[] = "$XConsortium: Dvi.c,v 1.9 89/12/10 16:12:25 rws Exp $";
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#endif /* lint */
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#endif /* SABER */
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/*
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* Dvi.c - Dvi display widget
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*
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*/
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#define XtStrlen(s) ((s) ? strlen(s) : 0)
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/* The following are defined for the reader's convenience. Any
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Xt..Field macro in this code just refers to some field in
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one of the substructures of the WidgetRec. */
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#include <X11/IntrinsicP.h>
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#include <X11/StringDefs.h>
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#include <X11/Xmu/Converters.h>
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#include <stdio.h>
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#include <ctype.h>
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#include "DviP.h"
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/****************************************************************
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*
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* Full class record constant
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*
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****************************************************************/
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/* Private Data */
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static char default_font_map[] = "\
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TR -adobe-times-medium-r-normal--*-100-*-*-*-*-iso8859-1\n\
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TI -adobe-times-medium-i-normal--*-100-*-*-*-*-iso8859-1\n\
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TB -adobe-times-bold-r-normal--*-100-*-*-*-*-iso8859-1\n\
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TBI -adobe-times-bold-i-normal--*-100-*-*-*-*-iso8859-1\n\
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CR -adobe-courier-medium-r-normal--*-100-*-*-*-*-iso8859-1\n\
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CI -adobe-courier-medium-o-normal--*-100-*-*-*-*-iso8859-1\n\
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CB -adobe-courier-bold-r-normal--*-100-*-*-*-*-iso8859-1\n\
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CBI -adobe-courier-bold-o-normal--*-100-*-*-*-*-iso8859-1\n\
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HR -adobe-helvetica-medium-r-normal--*-100-*-*-*-*-iso8859-1\n\
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HI -adobe-helvetica-medium-o-normal--*-100-*-*-*-*-iso8859-1\n\
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HB -adobe-helvetica-bold-r-normal--*-100-*-*-*-*-iso8859-1\n\
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HBI -adobe-helvetica-bold-o-normal--*-100-*-*-*-*-iso8859-1\n\
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NR -adobe-new century schoolbook-medium-r-normal--*-100-*-*-*-*-iso8859-1\n\
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NI -adobe-new century schoolbook-medium-i-normal--*-100-*-*-*-*-iso8859-1\n\
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NB -adobe-new century schoolbook-bold-r-normal--*-100-*-*-*-*-iso8859-1\n\
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NBI -adobe-new century schoolbook-bold-i-normal--*-100-*-*-*-*-iso8859-1\n\
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S -adobe-symbol-medium-r-normal--*-100-*-*-*-*-adobe-fontspecific\n\
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SS -adobe-symbol-medium-r-normal--*-100-*-*-*-*-adobe-fontspecific\n\
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";
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#define offset(field) XtOffset(DviWidget, field)
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#define MY_WIDTH(dw) ((int)(dw->dvi.paperwidth * dw->dvi.scale_factor + .5))
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#define MY_HEIGHT(dw) ((int)(dw->dvi.paperlength * dw->dvi.scale_factor + .5))
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static XtResource resources[] = {
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{XtNfontMap, XtCFontMap, XtRString, sizeof (char *),
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offset(dvi.font_map_string), XtRString, default_font_map},
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{XtNforeground, XtCForeground, XtRPixel, sizeof (unsigned long),
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offset(dvi.foreground), XtRString, "black"},
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{XtNbackground, XtCBackground, XtRPixel, sizeof (unsigned long),
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offset(dvi.background), XtRString, "white"},
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{XtNpageNumber, XtCPageNumber, XtRInt, sizeof (int),
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offset(dvi.requested_page), XtRString, "1"},
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{XtNlastPageNumber, XtCLastPageNumber, XtRInt, sizeof (int),
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offset (dvi.last_page), XtRString, "0"},
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{XtNfile, XtCFile, XtRFile, sizeof (FILE *),
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offset (dvi.file), XtRFile, (char *) 0},
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{XtNseek, XtCSeek, XtRBoolean, sizeof (Boolean),
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offset(dvi.seek), XtRString, "false"},
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{XtNfont, XtCFont, XtRFontStruct, sizeof (XFontStruct *),
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offset(dvi.default_font), XtRString, "xtdefaultfont"},
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{XtNbackingStore, XtCBackingStore, XtRBackingStore, sizeof (int),
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offset(dvi.backing_store), XtRString, "default"},
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{XtNnoPolyText, XtCNoPolyText, XtRBoolean, sizeof (Boolean),
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offset(dvi.noPolyText), XtRString, "false"},
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{XtNresolution, XtCResolution, XtRInt, sizeof(int),
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offset(dvi.default_resolution), XtRString, "75"},
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};
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#undef offset
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static void ClassInitialize ();
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static void ClassPartInitialize();
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static void Initialize(), Realize (), Destroy (), Redisplay ();
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static Boolean SetValues (), SetValuesHook ();
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static XtGeometryResult QueryGeometry ();
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static void ShowDvi ();
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static void CloseFile (), OpenFile ();
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static void FindPage ();
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static void SaveToFile ();
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DviClassRec dviClassRec = {
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{
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&widgetClassRec, /* superclass */
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"Dvi", /* class_name */
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sizeof(DviRec), /* size */
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ClassInitialize, /* class_initialize */
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ClassPartInitialize, /* class_part_initialize */
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FALSE, /* class_inited */
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Initialize, /* initialize */
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NULL, /* initialize_hook */
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Realize, /* realize */
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NULL, /* actions */
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0, /* num_actions */
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resources, /* resources */
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XtNumber(resources), /* resource_count */
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NULLQUARK, /* xrm_class */
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FALSE, /* compress_motion */
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TRUE, /* compress_exposure */
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TRUE, /* compress_enterleave */
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FALSE, /* visible_interest */
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Destroy, /* destroy */
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NULL, /* resize */
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Redisplay, /* expose */
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SetValues, /* set_values */
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SetValuesHook, /* set_values_hook */
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NULL, /* set_values_almost */
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NULL, /* get_values_hook */
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NULL, /* accept_focus */
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XtVersion, /* version */
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NULL, /* callback_private */
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0, /* tm_table */
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QueryGeometry, /* query_geometry */
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NULL, /* display_accelerator */
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NULL /* extension */
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},{
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SaveToFile, /* save */
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},
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};
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WidgetClass dviWidgetClass = (WidgetClass) &dviClassRec;
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static void ClassInitialize ()
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{
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XtAddConverter( XtRString, XtRBackingStore, XmuCvtStringToBackingStore,
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NULL, 0 );
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}
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/****************************************************************
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*
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* Private Procedures
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*
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****************************************************************/
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/* ARGSUSED */
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static void Initialize(request, new)
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Widget request, new;
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{
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DviWidget dw = (DviWidget) new;
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dw->dvi.current_page = 0;
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dw->dvi.font_map = 0;
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dw->dvi.cache.index = 0;
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dw->dvi.text_x_width = 0;
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dw->dvi.text_device_width = 0;
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dw->dvi.word_flag = 0;
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dw->dvi.file = 0;
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dw->dvi.tmpFile = 0;
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dw->dvi.state = 0;
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dw->dvi.readingTmp = 0;
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dw->dvi.cache.char_index = 0;
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dw->dvi.cache.font_size = -1;
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dw->dvi.cache.font_number = -1;
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dw->dvi.cache.adjustable[0] = 0;
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dw->dvi.file_map = 0;
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dw->dvi.fonts = 0;
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dw->dvi.seek = False;
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dw->dvi.device_resolution = dw->dvi.default_resolution;
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dw->dvi.display_resolution = dw->dvi.default_resolution;
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dw->dvi.paperlength = dw->dvi.default_resolution*11;
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dw->dvi.paperwidth = (dw->dvi.default_resolution*8
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+ dw->dvi.default_resolution/2);
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dw->dvi.scale_factor = 1.0;
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dw->dvi.sizescale = 1;
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dw->dvi.line_thickness = -1;
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dw->dvi.line_width = 1;
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dw->dvi.fill = DVI_FILL_MAX;
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dw->dvi.device_font = 0;
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dw->dvi.device_font_number = -1;
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dw->dvi.device = 0;
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dw->dvi.native = 0;
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}
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#include <X11/bitmaps/gray>
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static void
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Realize (w, valueMask, attrs)
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Widget w;
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XtValueMask *valueMask;
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XSetWindowAttributes *attrs;
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{
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DviWidget dw = (DviWidget) w;
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XGCValues values;
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if (dw->dvi.backing_store != Always + WhenMapped + NotUseful) {
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attrs->backing_store = dw->dvi.backing_store;
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*valueMask |= CWBackingStore;
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}
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XtCreateWindow (w, (unsigned)InputOutput, (Visual *) CopyFromParent,
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*valueMask, attrs);
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values.foreground = dw->dvi.foreground;
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values.cap_style = CapRound;
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values.join_style = JoinRound;
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values.line_width = dw->dvi.line_width;
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dw->dvi.normal_GC = XCreateGC (XtDisplay (w), XtWindow (w),
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GCForeground|GCCapStyle|GCJoinStyle
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|GCLineWidth,
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&values);
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dw->dvi.gray = XCreateBitmapFromData(XtDisplay (w), XtWindow (w),
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gray_bits,
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gray_width, gray_height);
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values.background = dw->dvi.background;
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values.stipple = dw->dvi.gray;
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dw->dvi.fill_GC = XCreateGC (XtDisplay (w), XtWindow (w),
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GCForeground|GCBackground|GCStipple,
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&values);
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dw->dvi.fill_type = DVI_FILL_BLACK;
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if (dw->dvi.file)
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OpenFile (dw);
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ParseFontMap (dw);
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}
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static void
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Destroy(w)
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Widget w;
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{
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DviWidget dw = (DviWidget) w;
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XFreeGC (XtDisplay (w), dw->dvi.normal_GC);
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XFreeGC (XtDisplay (w), dw->dvi.fill_GC);
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XFreePixmap (XtDisplay (w), dw->dvi.gray);
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DestroyFontMap (dw->dvi.font_map);
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DestroyFileMap (dw->dvi.file_map);
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device_destroy (dw->dvi.device);
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}
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/*
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* Repaint the widget window
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*/
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/* ARGSUSED */
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static void
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Redisplay(w, event, region)
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Widget w;
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XEvent *event;
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Region region;
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{
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DviWidget dw = (DviWidget) w;
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XRectangle extents;
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XClipBox (region, &extents);
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dw->dvi.extents.x1 = extents.x;
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dw->dvi.extents.y1 = extents.y;
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dw->dvi.extents.x2 = extents.x + extents.width;
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dw->dvi.extents.y2 = extents.y + extents.height;
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ShowDvi (dw);
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}
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/*
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* Set specified arguments into widget
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*/
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/* ARGSUSED */
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static Boolean
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SetValues (current, request, new)
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DviWidget current, request, new;
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{
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Boolean redisplay = FALSE;
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char *new_map;
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int cur, req;
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if (current->dvi.font_map_string != request->dvi.font_map_string) {
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new_map = XtMalloc (strlen (request->dvi.font_map_string) + 1);
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if (new_map) {
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redisplay = TRUE;
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strcpy (new_map, request->dvi.font_map_string);
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new->dvi.font_map_string = new_map;
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if (current->dvi.font_map_string)
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XtFree (current->dvi.font_map_string);
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current->dvi.font_map_string = 0;
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ParseFontMap (new);
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}
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}
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req = request->dvi.requested_page;
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cur = current->dvi.requested_page;
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if (cur != req) {
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if (!request->dvi.file)
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req = 0;
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else {
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if (req < 1)
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req = 1;
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if (current->dvi.last_page != 0 &&
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req > current->dvi.last_page)
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req = current->dvi.last_page;
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}
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if (cur != req)
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redisplay = TRUE;
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new->dvi.requested_page = req;
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if (current->dvi.last_page == 0 && req > cur)
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FindPage (new);
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}
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return redisplay;
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}
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/*
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* use the set_values_hook entry to check when
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* the file is set
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*/
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static Boolean
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SetValuesHook (dw, args, num_argsp)
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DviWidget dw;
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ArgList args;
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Cardinal *num_argsp;
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{
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Cardinal i;
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for (i = 0; i < *num_argsp; i++) {
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if (!strcmp (args[i].name, XtNfile)) {
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CloseFile (dw);
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OpenFile (dw);
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return TRUE;
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}
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}
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return FALSE;
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}
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static void CloseFile (dw)
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DviWidget dw;
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{
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if (dw->dvi.tmpFile)
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fclose (dw->dvi.tmpFile);
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ForgetPagePositions (dw);
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}
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static void OpenFile (dw)
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DviWidget dw;
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{
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char tmpName[sizeof ("/tmp/dviXXXXXX")];
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dw->dvi.tmpFile = 0;
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if (!dw->dvi.seek) {
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strcpy (tmpName, "/tmp/dviXXXXXX");
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mktemp (tmpName);
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dw->dvi.tmpFile = fopen (tmpName, "w+");
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unlink (tmpName);
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}
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dw->dvi.requested_page = 1;
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dw->dvi.last_page = 0;
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}
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static XtGeometryResult
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QueryGeometry (w, request, geometry_return)
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Widget w;
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XtWidgetGeometry *request, *geometry_return;
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{
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XtGeometryResult ret;
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DviWidget dw = (DviWidget) w;
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ret = XtGeometryYes;
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if (((request->request_mode & CWWidth)
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&& request->width < MY_WIDTH(dw))
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|| ((request->request_mode & CWHeight)
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&& request->height < MY_HEIGHT(dw)))
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ret = XtGeometryAlmost;
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geometry_return->width = MY_WIDTH(dw);
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geometry_return->height = MY_HEIGHT(dw);
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geometry_return->request_mode = CWWidth|CWHeight;
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return ret;
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}
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SetDevice (dw, name)
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DviWidget dw;
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char *name;
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{
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XtWidgetGeometry request, reply;
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XtGeometryResult ret;
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ForgetFonts (dw);
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dw->dvi.device = device_load (name);
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if (!dw->dvi.device)
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return;
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dw->dvi.sizescale = dw->dvi.device->sizescale;
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dw->dvi.device_resolution = dw->dvi.device->res;
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dw->dvi.native = dw->dvi.device->X11;
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dw->dvi.paperlength = dw->dvi.device->paperlength;
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dw->dvi.paperwidth = dw->dvi.device->paperwidth;
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if (dw->dvi.native) {
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dw->dvi.display_resolution = dw->dvi.device_resolution;
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dw->dvi.scale_factor = 1.0;
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}
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else {
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dw->dvi.display_resolution = dw->dvi.default_resolution;
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dw->dvi.scale_factor = ((double)dw->dvi.display_resolution
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/ dw->dvi.device_resolution);
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}
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request.request_mode = CWWidth|CWHeight;
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request.width = MY_WIDTH(dw);
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request.height = MY_HEIGHT(dw);
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ret = XtMakeGeometryRequest ((Widget)dw, &request, &reply);
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if (ret == XtGeometryAlmost
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&& reply.height >= request.height
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&& reply.width >= request.width) {
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request.width = reply.width;
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request.height = reply.height;
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XtMakeGeometryRequest ((Widget)dw, &request, &reply);
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}
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}
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static void
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ShowDvi (dw)
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DviWidget dw;
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{
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if (!dw->dvi.file) {
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static char Error[] = "No file selected";
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XSetFont (XtDisplay(dw), dw->dvi.normal_GC,
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dw->dvi.default_font->fid);
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XDrawString (XtDisplay (dw), XtWindow (dw), dw->dvi.normal_GC,
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20, 20, Error, strlen (Error));
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return;
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}
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FindPage (dw);
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dw->dvi.display_enable = 1;
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ParseInput (dw);
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if (dw->dvi.last_page && dw->dvi.requested_page > dw->dvi.last_page)
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dw->dvi.requested_page = dw->dvi.last_page;
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}
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static void
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FindPage (dw)
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DviWidget dw;
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{
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int i;
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long file_position;
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if (dw->dvi.requested_page < 1)
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dw->dvi.requested_page = 1;
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if (dw->dvi.last_page != 0 && dw->dvi.requested_page > dw->dvi.last_page)
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dw->dvi.requested_page = dw->dvi.last_page;
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file_position = SearchPagePosition (dw, dw->dvi.requested_page);
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if (file_position != -1) {
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FileSeek(dw, file_position);
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dw->dvi.current_page = dw->dvi.requested_page;
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} else {
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for (i=dw->dvi.requested_page; i > 0; i--) {
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file_position = SearchPagePosition (dw, i);
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if (file_position != -1)
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break;
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}
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if (file_position == -1)
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file_position = 0;
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FileSeek (dw, file_position);
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dw->dvi.current_page = i;
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dw->dvi.display_enable = 0;
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while (dw->dvi.current_page != dw->dvi.requested_page) {
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dw->dvi.current_page = ParseInput (dw);
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/*
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* at EOF, seek back to the begining of this page.
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*/
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if (!dw->dvi.readingTmp && feof (dw->dvi.file)) {
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file_position = SearchPagePosition (dw,
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dw->dvi.current_page);
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if (file_position != -1)
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FileSeek (dw, file_position);
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dw->dvi.requested_page = dw->dvi.current_page;
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break;
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}
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}
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}
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}
|
|
|
|
void DviSaveToFile(w, fp)
|
|
Widget w;
|
|
FILE *fp;
|
|
{
|
|
XtCheckSubclass(w, dviWidgetClass, NULL);
|
|
(*((DviWidgetClass) XtClass(w))->command_class.save)(w, fp);
|
|
}
|
|
|
|
static
|
|
void SaveToFile(w, fp)
|
|
Widget w;
|
|
FILE *fp;
|
|
{
|
|
DviWidget dw = (DviWidget)w;
|
|
long pos;
|
|
int c;
|
|
|
|
if (dw->dvi.tmpFile) {
|
|
pos = ftell(dw->dvi.tmpFile);
|
|
if (dw->dvi.ungot) {
|
|
pos--;
|
|
dw->dvi.ungot = 0;
|
|
/* The ungot character is in the tmpFile, so we don't
|
|
want to read it from file. */
|
|
(void)getc(dw->dvi.file);
|
|
}
|
|
}
|
|
else
|
|
pos = ftell(dw->dvi.file);
|
|
FileSeek(dw, 0L);
|
|
while (DviGetC(dw, &c) != EOF)
|
|
if (putc(c, fp) == EOF) {
|
|
/* XXX print error message */
|
|
break;
|
|
}
|
|
FileSeek(dw, pos);
|
|
}
|
|
|
|
static
|
|
void ClassPartInitialize(widget_class)
|
|
WidgetClass widget_class;
|
|
{
|
|
DviWidgetClass wc = (DviWidgetClass)widget_class;
|
|
DviWidgetClass super = (DviWidgetClass) wc->core_class.superclass;
|
|
if (wc->command_class.save == InheritSaveToFile)
|
|
wc->command_class.save = super->command_class.save;
|
|
}
|
|
|
|
/*
|
|
Local Variables:
|
|
c-indent-level: 8
|
|
c-continued-statement-offset: 8
|
|
c-brace-offset: -8
|
|
c-argdecl-indent: 8
|
|
c-label-offset: -8
|
|
c-tab-always-indent: nil
|
|
End:
|
|
*/
|