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Diffstat (limited to 'Build/source/texk/windvi/psdps.c')
-rw-r--r-- | Build/source/texk/windvi/psdps.c | 740 |
1 files changed, 740 insertions, 0 deletions
diff --git a/Build/source/texk/windvi/psdps.c b/Build/source/texk/windvi/psdps.c new file mode 100644 index 00000000000..fe84883c19d --- /dev/null +++ b/Build/source/texk/windvi/psdps.c @@ -0,0 +1,740 @@ +/*========================================================================*\ + +Copyright (c) 1994-1999 Paul Vojta + +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 +PAUL VOJTA 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. + +NOTES: + This code was originally written by Ricardo Telichevesky + (ricardo@rle-vlsi-mit.edu) and Luis Miguel Silveira + (lms@rle-vlsi-mit.edu). + It was largely influenced by similar code in the SeeTeX/XTeX + package by Dirk Grunwald (grunwald@colorado.edu). + +\*========================================================================*/ + +#ifdef PS_DPS /* whole file */ + +#include "xdvi-config.h" +#include <signal.h> +#include <X11/X.h> +#include <X11/Xlib.h> +#include <DPS/XDPSlib.h> +#include <DPS/dpsXclient.h> +#include <DPS/dpsexcept.h> +#include <DPS/dpsclient.h> + + /* + * This string reads chunks (delimited by %%xdvimark). + * The first character of a chunk tells whether a given chunk + * is to be done within save/restore or not. + * The `H' at the end tells it that the first group is a + * header; i.e., no save/restore. + */ +#ifndef SUNHACK +static char preamble[] = "\ +/xdvi$line 81 string def \ +/xdvi$run {{$error null ne {$error /newerror false put}if \ + currentfile cvx stopped \ + $error null eq {false} {$error /newerror get} ifelse and \ + {handleerror} if} stopped pop} def \ +/xdvi$dslen countdictstack def \ +{currentfile read not {exit} if 72 eq \ + {xdvi$run} \ + {/xdvi$sav save def xdvi$run \ + clear countdictstack xdvi$dslen sub {end} repeat xdvi$sav restore} \ + ifelse \ + {(%%xdvimark) currentfile xdvi$line {readline} stopped \ + {clear} {pop eq {exit} if} ifelse }loop \ + (xdvi$Ack\n) print flush \ +}loop\nH"; +#else /* SUNHACK */ +static char preamble[] = "\ +/xdvi$line 81 string def \ +/xdvi$run {{$error null ne {$error /newerror false put}if \ + currentfile cvx stopped \ + $error null eq {false} {$error /newerror get} ifelse and \ + {handleerror} if} stopped pop} def \ +/xdvi$dslen countdictstack def \ +/xdvi$ack {{(%%xdvimark) currentfile xdvi$line {readline} stopped \ + {clear} {pop eq {exit} if} ifelse }loop \ + (xdvi$Ack\n) print flush} bind def \ +errordict begin /interrupt{(xdvi$Int\n) print flush stop}bind def \ +end \ +{{currentfile read not {exit} if 72 eq \ + {xdvi$run} \ + {/xdvi$sav save def xdvi$run \ + clear countdictstack xdvi$dslen sub {end} repeat xdvi$sav restore} \ + ifelse \ + xdvi$ack \ + }loop \ +xdvi$ack \ +}loop\nH"; +#endif /* SUNHACK */ + +extern char psheader[]; +extern int psheaderlen; + +#define postscript resource._postscript + + +/* global procedures (besides initDPS) */ + +static void toggleDPS ARGS((void)); +static void destroyDPS ARGS((void)); +static void interruptDPS ARGS((void)); +static void endpageDPS ARGS((void)); +static void drawbeginDPS ARGS((int, int, _Xconst char *)); +static void drawrawDPS ARGS((_Xconst char *)); +static void drawfileDPS ARGS((_Xconst char *, FILE *)); +static void drawendDPS ARGS((_Xconst char *)); +static void beginheaderDPS ARGS((void)); +static void endheaderDPS ARGS((void)); +static void newdocDPS ARGS((void)); + +static struct psprocs dps_procs = { + /* toggle */ toggleDPS, + /* destroy */ destroyDPS, + /* interrupt */ interruptDPS, + /* endpage */ endpageDPS, + /* drawbegin */ drawbeginDPS, + /* drawraw */ drawrawDPS, + /* drawfile */ drawfileDPS, + /* drawend */ drawendDPS, + /* beginheader */ beginheaderDPS, + /* endheader */ endheaderDPS, + /* newdoc */ newdocDPS}; + +static DPSContext DPS_ctx = NULL; +static DPSSpace DPS_space = NULL; +static int DPS_mag; /* magnification currently in use */ +static int DPS_shrink; /* shrink factor currently in use */ +static Boolean DPS_active; /* if we've started a page */ +static int DPS_pending; /* number of ack's we're expecting */ +static Boolean DPS_in_header; /* if we're sending a header */ +static Boolean DPS_in_doc; /* if we've sent header information */ + + +#if 0 +static void DPSErrorProcHandler(); +#else +#define DPSErrorProcHandler DPSDefaultErrorProc +#endif + + +static char ackstr[] = "xdvi$Ack\n"; +#ifdef SUNHACK +static char intstr[] = "xdvi$Int\n"; +#endif + +#define LINELEN 81 +#define BUFLEN (LINELEN + sizeof(ackstr)) +static char line[BUFLEN + 1]; +static char *linepos = line; + +static void +TextProc(ctxt, buf, count) + DPSContext ctxt; + char *buf; + unsigned long count; +{ + int i; + char *p; + char *p0; + + while (count > 0) { + i = line + BUFLEN - linepos; + if (i > count) i = count; + (void) bcopy(buf, linepos, i); + linepos += i; + buf += i; + count -= i; + p0 = line; + for (;;) { + if (p0 >= linepos) { + linepos = line; + break; + } + p = memchr(p0, '\n', linepos - p0); + if (p == NULL) { + if (p0 != line) { + (void) bcopy(p0, line, linepos - p0); + linepos -= p0 - line; + } + else if (linepos == line + BUFLEN) { + char c; + + c = line[LINELEN]; + line[LINELEN] = '\0'; + Printf("DPS: %s\n", line); + line[LINELEN] = c; + linepos -= LINELEN; + (void) bcopy(line + LINELEN, line, linepos - line); + } + break; + } + if (p >= p0 + 8 && memcmp(p - 8, ackstr, 9) == 0) { + --DPS_pending; + if (debug & DBG_PS) + Printf("Got DPS ack; %d pending.\n", DPS_pending); + ++p; + (void) bcopy(p, p - 9, linepos - p); + linepos -= 9; + continue; + } +#ifdef SUNHACK + if (p >= p0 + 8 && memcmp(p - 8, intstr, 9) == 0) { + DPS_pending = 1; + if (debug & DBG_PS) + Puts("Got DPS int."); + ++p; + (void) bcopy(p, p - 9, linepos - p); + linepos -= 9; + continue; + } +#endif /* SUNHACK */ + *p = '\0'; + Printf("DPS: %s\n", p0); + p0 = p + 1; + } + } +} + + +/*---------------------------------------------------------------------------* + waitack() + + Arguments: none. + + Returns: (void) + + Description: + Waits until the requisite number of acknowledgements has been received from + the context. + ++----------------------------------------------------------------------------*/ + +static void +waitack() +{ + while (DPS_pending > 0) { + (void) XEventsQueued(DISP, QueuedAfterFlush); + ps_read_events(False, False); + if (DPS_ctx == NULL) break; /* if interrupt occurred */ + } +} + + +/*---------------------------------------------------------------------------* + initDPS() + + Arguments: (none) + Returns: (void) + Side-Effects: DPS_ctx may be set as well as other static variables. + + Description: + Initializes variables from the application main loop. Checks to see if + a connection to the DPS server can be opened. + ++----------------------------------------------------------------------------*/ + +static int +get_shift(mask) + Pixel mask; +{ + int k; + + for (k = 0; (mask & 1) == 0; ++k) + mask >>= 1; + return k; +} + +Boolean +initDPS() +{ + + /* Try to create a context */ + +#if GREY + + if (our_colormap == DefaultColormapOfScreen(SCRN)) + DPS_ctx = XDPSCreateSimpleContext(DISP, mane.win, ruleGC, 0, 0, + TextProc, DPSDefaultErrorProc, NULL); + else { + static XStandardColormap *ccube = NULL; + static XStandardColormap *grayramp = NULL; + int shift; + + if (grayramp == NULL) { + grayramp = XAllocStandardColormap(); + if (grayramp == NULL) + return False; + } + + if (ccube == NULL) { + ccube = XAllocStandardColormap(); + if (ccube == NULL) + return False; + } + + shift = get_shift(our_visual->red_mask); + ccube->red_max = our_visual->red_mask >> shift; + ccube->red_mult = 1 << shift; + + shift = get_shift(our_visual->green_mask); + ccube->green_max = our_visual->green_mask >> shift; + ccube->green_mult = 1 << shift; + + shift = get_shift(our_visual->blue_mask); + ccube->blue_max = our_visual->blue_mask >> shift; + ccube->blue_mult = 1 << shift; + + grayramp->red_max = ccube->red_max & ccube->green_max + & ccube->blue_max; + grayramp->red_mult = ccube->red_mult + ccube->green_mult + + ccube->blue_mult; + + ccube->colormap = grayramp->colormap = our_colormap; + ccube->visualid = grayramp->visualid = our_visual->visualid; + + DPS_ctx = XDPSCreateContext(DISP, mane.win, ruleGC, 0, 0, + 0, grayramp, ccube, + /* actual */ (ccube->red_max + 1) * (ccube->green_max + 1) + * (ccube->blue_max + 1), + TextProc, DPSDefaultErrorProc, NULL); + } + +#else /* not GREY */ + + DPS_ctx = XDPSCreateSimpleContext(DISP, mane.win, ruleGC, 0, 0, + TextProc, DPSDefaultErrorProc, NULL); + +#endif /* not GREY */ + + if (DPS_ctx == NULL) + return False; + + DPS_mag = DPS_shrink = -1; + DPS_active = False; + DPS_pending = 1; + + DPS_space = DPSSpaceFromContext(DPS_ctx); + DPSWritePostScript(DPS_ctx, preamble, sizeof(preamble) - 1); + DPSWritePostScript(DPS_ctx, psheader, psheaderlen); + DPSPrintf(DPS_ctx, "matrix setmatrix stop\n%%%%xdvimark\n"); + DPSFlushContext(DPS_ctx); + + psp = dps_procs; + return True; +} + + +/*---------------------------------------------------------------------------* + toggleDPS() + + Arguments: none + Returns: (void) + Side-Effects: psp.drawbegin is changed. + + Description: + Used to toggle the rendering of PostScript by the DPS server + ++----------------------------------------------------------------------------*/ + +static void +toggleDPS() +{ + if (debug & DBG_PS) Puts("Toggling DPS on or off"); + if (postscript) psp.drawbegin = drawbeginDPS; + else { + interruptDPS(); + psp.drawbegin = drawbegin_none; + } +} + + +/*---------------------------------------------------------------------------* + destroyDPS() + + Arguments: none + Returns: (void) + Side-Effects: the context is nulled out and destroyed. + + Description: + Close the connection to the DPS server; used when rendering is terminated + in any way. + ++----------------------------------------------------------------------------*/ + +static void +destroyDPS() +{ + if (debug & DBG_PS) + Puts("Calling destroyDPS()"); + if (linepos > line) { + *linepos = '\0'; + Printf("DPS: %s\n", line); + } + DPSDestroySpace(DPS_space); + psp = no_ps_procs; + scanned_page = scanned_page_bak = scanned_page_reset; +} + + +/*---------------------------------------------------------------------------* + interruptDPS() + + Arguments: none + Returns: (void) + Side-Effects: the context may be nulled out and destroyed. + + Description: + Close the connection to the DPS server; used when rendering is terminated + because of an interruption in the viewing of the current page. + ++----------------------------------------------------------------------------*/ + +static void +interruptDPS() +{ +#ifdef SUNHACK + static Boolean interrupting = False; +#endif + + if (debug & DBG_PS) + Puts("Running interruptDPS()"); + +#ifndef SUNHACK + if (DPS_pending > 0) +#else /* SUNHACK */ + if (DPS_pending > 0 && !interrupting) +#endif /* SUNHACK */ + { + if (debug & DBG_PS) + Printf("interruptDPS: code is now %d\n", XDPSGetContextStatus(DPS_ctx)); + + /* + * I would really like to use DPSInterruptContext() here, but (at least + * on an RS6000) I can't get it to work. + */ + +#ifdef SUNHACK + /* + * On the other hand, under OpenWindows 3.3 (at least), destroying and + * re-creating contexts has a nasty habit of crashing the server. + */ + + interrupting = True; + DPSInterruptContext(DPS_ctx); + DPS_pending = 32767; + DPSPrintf(DPS_ctx, "%%%%xdvimark\n"); + DPSFlushContext(DPS_ctx); + DPS_active = False; + waitack(); + interrupting = False; +#else /* SUNHACK */ + DPSDestroyContext(DPS_ctx); + DPS_ctx = NULL; + DPS_active = False; + DPS_pending = 0; +#endif /* SUNHACK */ + } +} + + +/*---------------------------------------------------------------------------* + endpageDPS() + + Arguments: none + Returns: (void) + Side-Effects: the DPS_active variable is cleared. + + Description: + Should be called at the end of a page to end this chunk for the DPS server. + ++----------------------------------------------------------------------------*/ + +static void +endpageDPS() +{ + if (DPS_active) { + if (debug & DBG_PS) + Puts("Endpage sent to context"); + DPSPrintf(DPS_ctx, "stop\n%%%%xdvimark\n"); + DPSFlushContext(DPS_ctx); + DPS_active = False; + waitack(); + } +} + + +/*---------------------------------------------------------------------------* + drawbeginDPS () + + Arguments: xul, yul - coordinates of the upper left corner of the figure + cp - string with the bounding box line data + Returns: (void) + Side-Effects: DPS_ctx is set is set and connection to DPS server is + opened. + + Description: + Opens a connection to the DPS server and send in the preamble and the + bounding box information after correctly computing resolution factors. + In case no rendering is to be done, outlines the figure. + An outline is also generated whenever the a context cannot be allocated + ++----------------------------------------------------------------------------*/ + +static void +drawbeginDPS(xul, yul, cp) + int xul, yul; + _Xconst char *cp; +{ + /* static char faulty_display_vs[] + * ="DECWINDOWS DigitalEquipmentCorporation UWS4.2LA"; */ + + if (debug & DBG_PS) + Printf("Begin drawing at xul= %d, yul= %d.\n", xul, yul); + + /* we assume that I cannot write the file to the postscript context */ + if (DPS_ctx == NULL) { + DPS_ctx = XDPSCreateSimpleContext(DISP, mane.win, ruleGC, 0, 0, + TextProc, DPSErrorProcHandler, DPS_space); + if (DPS_ctx == NULL) { + psp = no_ps_procs; + draw_bbox(); + return; + } + DPSWritePostScript(DPS_ctx, preamble, sizeof(preamble) - 1); + /* it already has psheader */ + DPSPrintf(DPS_ctx, "matrix setmatrix stop\n%%%%xdvimark\n"); + DPS_mag = DPS_shrink = -1; + DPS_active = False; + DPS_pending = 1; + } + + if (!DPS_active) { + /* send initialization to context */ + if (magnification != DPS_mag) { + DPSPrintf(DPS_ctx, "H TeXDict begin /DVImag %d 1000 div def \ +end stop\n%%%%xdvimark\n", + DPS_mag = magnification); + ++DPS_pending; + } + if (mane.shrinkfactor != DPS_shrink) { + DPSPrintf(DPS_ctx, "H TeXDict begin %d %d div dup \ +/Resolution X /VResolution X \ +end stop\n%%%%xdvimark\n", + pixels_per_inch, DPS_shrink = mane.shrinkfactor); + ++DPS_pending; + } + DPSPrintf(DPS_ctx, " TeXDict begin\n"); + DPS_active = True; + ++DPS_pending; + } + + DPSPrintf(DPS_ctx, "%d %d moveto\n", xul, yul); + DPSPrintf(DPS_ctx, "%s\n", cp); +} + + +/*---------------------------------------------------------------------------* + + drawrawDPS() + + Arguments: cp - the raw string to be sent to the postscript interpreter + Returns: (void) + Side-Effects: (none) + + Description: + If there is a valid postscript context, just send the string to the + interpreter, else leave. + ++----------------------------------------------------------------------------*/ + +static void +drawrawDPS(cp) + _Xconst char *cp; +{ + if (!DPS_active) + return; + + if (debug & DBG_PS) + Printf("Sending raw PS to context: %s\n", cp); + + read_events(False); + DPSPrintf(DPS_ctx,"%s\n", cp); +} + + +/*---------------------------------------------------------------------------* + drawfileDPS() + + Arguments: cp - string with the postscript file pathname + psfile - opened file pointer + Returns: (void) + Side-Effects: none + + Description: + Postscript file containing the figure is opened and sent to the DPS server. + ++----------------------------------------------------------------------------*/ + +static void +drawfileDPS(cp, psfile) + _Xconst char *cp; + FILE *psfile; +{ + char buffer[1025]; + int blen; + + if (!DPS_active) { + Fclose(psfile); + ++n_files_left; + return; + } + + if (debug & DBG_PS) + Printf("sending file %s\n", cp); + for (;;) { + ps_read_events(False, False); + if (canit || !DPS_active) break; /* alt_canit is not a factor here */ + blen = fread(buffer, sizeof(char), 1024, psfile); + if (blen == 0) break; + DPSWritePostScript(DPS_ctx, buffer, blen); + } + Fclose(psfile); + ++n_files_left; + if (canit) { + interruptDPS(); + longjmp(canit_env, 1); + } +} + + +/*---------------------------------------------------------------------------* + drawendDPS() + + Arguments: cp - string with indication of the end of the special + Returns: (void) + Side-Effects: none + + Description: + Sends the indication of end of the figure PostScript code. + ++----------------------------------------------------------------------------*/ + +static void +drawendDPS(cp) + _Xconst char *cp; +{ + if (!DPS_active) + return; + + if (debug & DBG_PS) + Printf("End PS: %s\n", cp); + read_events(False); + DPSPrintf(DPS_ctx,"%s\n", cp); +} + + +/*---------------------------------------------------------------------------* + beginheaderDPS() + + Arguments: none + Returns: (void) + + Description: + Prepares the PostScript interpreter for receipt of header code. + ++----------------------------------------------------------------------------*/ + +static void +beginheaderDPS() +{ + if (debug & DBG_PS) Puts("Running beginheaderDPS()"); + + if (DPS_active) { + if (!DPS_in_header) + oops("Internal error in beginheaderDPS().\n"); + return; + } + + DPS_in_header = True; + if (DPS_in_doc) + DPSPrintf(DPS_ctx, "H"); + else { + DPSPrintf(DPS_ctx, "Hsave /xdvi$doc exch def\n"); + DPS_in_doc = True; + } + DPS_active = True; + ++DPS_pending; +} + + +/*---------------------------------------------------------------------------* + endheaderDPS() + + Arguments: none + Returns: (void) + + Description: + Prepares the PostScript interpreter for receipt of header code. + ++----------------------------------------------------------------------------*/ + +static void +endheaderDPS() +{ + if (debug & DBG_PS) Puts("Running endheaderDPS()"); + + if (DPS_active) { + DPSPrintf(DPS_ctx, "stop\n%%%%xdvimark\n"); + DPS_active = False; + DPS_in_header = False; + DPSFlushContext(DPS_ctx); + waitack(); + } +} + + +/*---------------------------------------------------------------------------* + newdocDPS() + + Arguments: none + Returns: (void) + + Description: + Clears out headers stored from the previous document. + ++----------------------------------------------------------------------------*/ + +static void +newdocDPS() +{ + if (debug & DBG_PS) Puts("Running newdocDPS()"); + + if (DPS_in_doc) { + DPSPrintf(DPS_ctx, "H xdvi$doc restore stop\n%%%%xdvimark\n"); + ++DPS_pending; + DPS_mag = DPS_shrink = -1; + DPS_in_doc = False; + } +} + +#endif /* PS_DPS */ |