diff options
Diffstat (limited to 'Dvi.c')
| -rw-r--r-- | Dvi.c | 554 |
1 files changed, 554 insertions, 0 deletions
@@ -0,0 +1,554 @@ +/* $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. + +*/ +/* $XFree86: xc/programs/xditview/Dvi.c,v 1.4 2001/08/27 23:35:12 dawes Exp $ */ + + +/* + * 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 <stdlib.h> +#include <unistd.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\ +TR -*-times-medium-r-normal--*-*-*-*-*-*-iso8859-1\n\ +TI -*-times-medium-i-normal--*-*-*-*-*-*-iso8859-1\n\ +TB -*-times-bold-r-normal--*-*-*-*-*-*-iso8859-1\n\ +TF -*-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"}, + {XtNsizeScale, XtCSizeScale, XtRInt, sizeof (int), + offset(dvi.size_scale_set), XtRImmediate, (XtPointer) 0}, +}; + +#undef offset + +static void ClassInitialize(void); +static void Initialize(Widget, Widget, ArgList, Cardinal *); +static void Realize(Widget, XtValueMask *, XSetWindowAttributes *); +static void Destroy(Widget); +static void Redisplay(Widget, XEvent *, Region); +static Boolean SetValues(Widget, Widget, Widget, ArgList , Cardinal *); +static Boolean SetValuesHook(Widget, ArgList, Cardinal *); +static XtGeometryResult QueryGeometry(Widget, + XtWidgetGeometry *, XtWidgetGeometry *); +static void RequestDesiredSize(DviWidget); +static void ShowDvi(DviWidget); +static void CloseFile(DviWidget); +static void OpenFile(DviWidget); + +#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 */ + XtExposeCompressMaximal, /* 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 (void) +{ + 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.size_scale = 0; + dw->dvi.size_scale_set = 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); +#ifdef USE_XFT + { + int scr; + Visual *visual; + Colormap cmap; + XRenderColor black; + + scr = XScreenNumberOfScreen (dw->core.screen); + visual = DefaultVisual (XtDisplay (w), scr); + cmap = DefaultColormap (XtDisplay (w), scr); + dw->dvi.draw = XftDrawCreate (XtDisplay (w), XtWindow (w), + visual, cmap); + + black.red = black.green = black.blue = 0; + black.alpha = 0xffff; + XftColorAllocValue (XtDisplay (w), visual, cmap, + &black, &dw->dvi.black); + dw->dvi.default_font = XftFontOpenName (XtDisplay (w), + scr, + "serif-12"); + } +#endif + 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; +#ifndef USE_XFT + XRectangle extents; +#endif + +#ifdef USE_XFT + XClearArea (XtDisplay (dw), + XtWindow (dw), + 0, 0, 0, 0, False); + dw->dvi.extents.x1 = 0; + dw->dvi.extents.y1 = 0; + dw->dvi.extents.x2 = dw->core.width; + dw->dvi.extents.y2 = dw->core.height; +#else + 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; +#endif + ShowDvi (dw); +} + +static void +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")]; +#ifdef HAS_MKSTEMP + int fd; +#endif + + dw->dvi.tmpFile = 0; + if (!dw->dvi.seek) { + strcpy (tmpName, "/tmp/dviXXXXXX"); +#ifndef HAS_MKSTEMP + mktemp (tmpName); + dw->dvi.tmpFile = fopen (tmpName, "w+"); +#else + fd = mkstemp(tmpName); + dw->dvi.tmpFile = fdopen(fd, "w+"); +#endif + 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; +} + +void +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); + } +} + +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; +} |