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Diffstat (limited to 'Build/source/texk/dvipng/special.c-1.12')
-rw-r--r--Build/source/texk/dvipng/special.c-1.12785
1 files changed, 785 insertions, 0 deletions
diff --git a/Build/source/texk/dvipng/special.c-1.12 b/Build/source/texk/dvipng/special.c-1.12
new file mode 100644
index 00000000000..a68104cae42
--- /dev/null
+++ b/Build/source/texk/dvipng/special.c-1.12
@@ -0,0 +1,785 @@
+/* special.c */
+
+/************************************************************************
+
+ Part of the dvipng distribution
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU Lesser General Public License as
+ published by the Free Software Foundation, either version 3 of the
+ License, or (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with this program. If not, see
+ <http://www.gnu.org/licenses/>.
+
+ Copyright (C) 2002-2009 Jan-Åke Larsson
+
+************************************************************************/
+
+#include "dvipng.h"
+
+#define SKIPSPACES(s) while(s && *s==' ' && *s!='\0') s++
+
+/* PostScript can come as a string (headers and raw specials) or
+ a memory-mapped file (headers and included EPS figures). */
+
+struct pscode {
+ struct pscode* next;
+ char* special; /* complete special */
+ char* code; /* PS string, null if a file */
+ char* filename; /* file name, null if a string */
+ char* postcode; /* post PS string */
+ struct filemmap fmmap; /* file mmap */
+};
+
+struct pscode* psheaderp=NULL; /* static, DVI-specific header list */
+
+void PSCodeInit(struct pscode *entry, char *special)
+{
+ entry->next=NULL;
+ entry->special=special;
+ entry->code=NULL;
+ entry->filename=NULL;
+ entry->postcode=NULL;
+ entry->fmmap.data=NULL;
+ if (special==NULL)
+ return;
+ if (strncmp(special,"header=",7)==0)
+ entry->filename=special+7;
+ else if (strncmp(special,"ps:: plotfile ",14)==0)
+ entry->filename=special+14;
+ else if (special[0]=='"' || special[0]=='!')
+ entry->code=special+1;
+ else if (strncmp(special,"ps::[begin]",11)==0)
+ entry->code=special+11;
+ else if (strncmp(special,"ps::[end]",9)==0)
+ entry->code=special+9;
+ else if (strncmp(special,"ps::",4)==0)
+ entry->code=special+4;
+ else if (strncmp(special,"ps:",3)==0)
+ entry->code=special+3;
+ else
+ entry->code=special;
+#ifdef DEBUG
+ if (entry->code!=NULL)
+ DEBUG_PRINT(DEBUG_GS,(" '%s'",entry->code));
+ if (entry->filename!=NULL)
+ DEBUG_PRINT(DEBUG_GS,(" {%s}",entry->filename));
+ if (entry->postcode!=NULL)
+ DEBUG_PRINT(DEBUG_GS,(" '%s'",entry->postcode));
+#endif
+}
+
+
+
+void ClearPSHeaders(void)
+{
+ struct pscode *temp=psheaderp;
+
+ while(temp!=NULL) {
+ psheaderp=psheaderp->next;
+ if (temp->fmmap.data!=NULL)
+ UnMmapFile(&(temp->fmmap));
+ free(temp);
+ temp=psheaderp;
+ }
+}
+
+void writepscode(struct pscode* pscodep, FILE* psstream)
+{
+ while (pscodep!=NULL) {
+ if (pscodep->code!=NULL) {
+ fputs(pscodep->code,psstream);
+ putc('\n',psstream);
+ DEBUG_PRINT(DEBUG_GS,("\n PS CODE:\t%s",pscodep->code));
+ }
+ if (pscodep->filename!=NULL && pscodep->fmmap.data==NULL) {
+ char* filepath=
+ kpse_find_file(pscodep->filename,kpse_tex_ps_header_format,false);
+ if (filepath==NULL) {
+ Warning("Cannot find PostScript file %s, ignored", pscodep->filename);
+ page_flags |= PAGE_GAVE_WARN;
+ } else if (MmapFile(filepath,&(pscodep->fmmap))) {
+ Warning("PostScript file %s unusable, ignored", pscodep->filename);
+ page_flags |= PAGE_GAVE_WARN;
+ }
+ }
+ if (pscodep->fmmap.data!=NULL) {
+ unsigned char* position;
+
+ DEBUG_PRINT(DEBUG_GS,("\n PS FILE:\t%s",pscodep->filename));
+ position=(unsigned char*)pscodep->fmmap.data;
+ while(position
+ < (unsigned char*)pscodep->fmmap.data + pscodep->fmmap.size) {
+ putc(*position,psstream);
+ position++;
+ }
+ }
+ if (pscodep->postcode!=NULL) {
+ fputs(pscodep->postcode,psstream);
+ putc('\n',psstream);
+ DEBUG_PRINT(DEBUG_GS,("\n PS POST CODE:\t%s",pscodep->postcode));
+ }
+ pscodep=pscodep->next;
+ }
+}
+
+
+gdImagePtr
+ps2png(struct pscode* pscodep, char *device, int hresolution, int vresolution,
+ int llx, int lly, int urx, int ury, int bgred, int bggreen, int bgblue)
+{
+#ifndef MIKTEX
+ int downpipe[2], uppipe[2];
+ pid_t pid;
+#else
+ HANDLE hPngStream;
+ HANDLE hPsStream;
+ HANDLE hStdErr;
+ PROCESS_INFORMATION pi;
+ _TCHAR szCommandLine[2048];
+ _TCHAR szGsPath[_MAX_PATH];
+#define GS_PATH szGsPath
+ int fd;
+#endif
+ FILE *psstream=NULL, *pngstream=NULL;
+ char resolution[STRSIZE];
+ /* char devicesize[STRSIZE]; */
+ gdImagePtr psimage=NULL;
+ static bool showpage=false;
+
+ sprintf(resolution, "-r%dx%d",hresolution,vresolution);
+ /* Future extension for \rotatebox
+ status=sprintf(devicesize, "-g%dx%d",
+ //(int)((sin(atan(1.0))+1)*
+ (urx - llx)*hresolution/72,//),
+ //(int)((sin(atan(1.0))+1)*
+ (ury - lly)*vresolution/72);//);
+ */
+ DEBUG_PRINT(DEBUG_GS,
+ ("\n GS CALL:\t%s %s %s %s %s %s %s %s %s %s %s",/* %s", */
+ GS_PATH, device, resolution, /*devicesize,*/
+ "-dBATCH", "-dNOPAUSE", "-q", "-sOutputFile=-",
+ "-dTextAlphaBits=4", "-dGraphicsAlphaBits=4",
+ (option_flags & NO_GSSAFER) ? "-": "-dSAFER",
+ (option_flags & NO_GSSAFER) ? "": "- "));
+#ifndef MIKTEX
+ if (pipe(downpipe) || pipe(uppipe)) return(NULL);
+ /* Ready to fork */
+ pid = fork ();
+ if (pid == 0) { /* Child process. Execute gs. */
+ close(downpipe[1]);
+ dup2(downpipe[0], STDIN_FILENO);
+ close(downpipe[0]);
+ close(uppipe[0]);
+ dup2(uppipe[1], STDOUT_FILENO);
+ close(uppipe[1]);
+ execlp(GS_PATH, GS_PATH, device, resolution, /*devicesize,*/
+ "-dBATCH", "-dNOPAUSE", "-q", "-sOutputFile=-",
+ "-dTextAlphaBits=4", "-dGraphicsAlphaBits=4",
+ (option_flags & NO_GSSAFER) ? "-": "-dSAFER",
+ (option_flags & NO_GSSAFER) ? NULL: "-",
+ NULL);
+ _exit (EXIT_FAILURE);
+ }
+ /* Parent process. */
+
+ close(downpipe[0]);
+ psstream=fdopen(downpipe[1],"wb");
+ /* fclose(psstream); psstream=fopen("test.ps","wb"); */
+ if (psstream == NULL)
+ close(downpipe[1]);
+ close(uppipe[1]);
+ pngstream=fdopen(uppipe[0],"rb");
+ if (pngstream == NULL)
+ close(uppipe[0]);
+#else /* MIKTEX */
+ if (! miktex_find_miktex_executable("mgs.exe", szGsPath)) {
+ Warning("Ghostscript could not be found");
+ return(NULL);
+ }
+ sprintf(szCommandLine,"\"%s\" %s %s %s %s %s %s %s %s %s %s",/* %s",*/
+ szGsPath, device, resolution, /*devicesize,*/
+ "-dBATCH", "-dNOPAUSE", "-q", "-sOutputFile=-",
+ "-dTextAlphaBits=4", "-dGraphicsAlphaBits=4",
+ (option_flags & NO_GSSAFER) ? "-": "-dSAFER",
+ (option_flags & NO_GSSAFER) ? "": "-");
+ if (! miktex_start_process_3(szCommandLine, &pi, INVALID_HANDLE_VALUE,
+ &hPsStream, &hPngStream, &hStdErr, 0)) {
+ Warning("Ghostscript could not be started");
+ return(NULL);
+ }
+ CloseHandle (pi.hThread);
+ fd = _open_osfhandle((intptr_t)hPsStream, _O_WRONLY);
+ if (fd >= 0) {
+ psstream = _tfdopen(fd, "wb");
+ if (psstream == NULL)
+ _close (fd);
+ }
+ fd = _open_osfhandle((intptr_t)hPngStream, _O_RDONLY);
+ if (fd >= 0) {
+ pngstream = _tfdopen(fd, "rb");
+ if (pngstream == NULL)
+ _close (fd);
+ }
+#endif
+ if (psstream) {
+ writepscode(psheaderp,psstream);
+ DEBUG_PRINT(DEBUG_GS,("\n PS CODE:\t<</PageSize[%d %d]/PageOffset[%d %d[1 1 dtransform exch]{0 ge{neg}if exch}forall]>>setpagedevice",
+ urx - llx, ury - lly,llx,lly));
+ fprintf(psstream, "<</PageSize[%d %d]/PageOffset[%d %d[1 1 dtransform exch]{0 ge{neg}if exch}forall]>>setpagedevice\n",
+ urx - llx, ury - lly,llx,lly);
+ if ( bgred < 255 || bggreen < 255 || bgblue < 255 ) {
+ DEBUG_PRINT(DEBUG_GS,("\n PS CODE:\tgsave %f %f %f setrgbcolor clippath fill grestore",
+ bgred/255.0, bggreen/255.0, bgblue/255.0));
+ fprintf(psstream, "gsave %f %f %f setrgbcolor clippath fill grestore",
+ bgred/255.0, bggreen/255.0, bgblue/255.0);
+ }
+ writepscode(pscodep,psstream);
+ if (showpage) {
+ DEBUG_PRINT(DEBUG_GS,("\n PS CODE:\tshowpage"));
+ fprintf(psstream, " showpage ");
+ }
+ fclose(psstream);
+ }
+ if (pngstream) {
+ psimage = gdImageCreateFromPng(pngstream);
+ fclose(pngstream);
+ }
+#ifdef MIKTEX
+ CloseHandle(pi.hProcess);
+#endif
+ if (psimage == NULL) {
+ DEBUG_PRINT(DEBUG_GS,("\n GS OUTPUT:\tNO IMAGE "));
+ if (!showpage) {
+ showpage=true;
+ DEBUG_PRINT(DEBUG_GS,("(will try adding \"showpage\") "));
+ psimage=ps2png(pscodep,
+ device, hresolution, vresolution, llx, lly, urx, ury,
+ bgred,bggreen,bgblue);
+ showpage=false;
+ }
+#ifdef DEBUG
+ } else {
+ DEBUG_PRINT(DEBUG_GS,("\n GS OUTPUT:\t%dx%d image ",
+ gdImageSX(psimage),gdImageSY(psimage)));
+#endif
+ }
+ return psimage;
+}
+
+gdImagePtr
+rescale(gdImagePtr psimage, int pngwidth, int pngheight)
+{
+ gdImagePtr scaledimage=psimage;
+ /* Rescale unless correct size */
+ if (psimage!=NULL
+ && gdImageSX(psimage)!=pngwidth
+ && gdImageSY(psimage)!=pngheight) {
+ DEBUG_PRINT(DEBUG_DVI,
+ ("\n RESCALE INCLUDED BITMAP \t(%d,%d) -> (%d,%d)",
+ gdImageSX(psimage),gdImageSY(psimage),
+ pngwidth,pngheight));
+#ifdef HAVE_GDIMAGECREATETRUECOLOR
+ scaledimage=gdImageCreateTrueColor(pngwidth,pngheight);
+ /* Copy with overwrite, remember that this is the rescaled source
+ image. The real target has alpha blending on. */
+ gdImageAlphaBlending(scaledimage,0);
+ gdImageCopyResampled(scaledimage,psimage,0,0,0,0,
+ pngwidth,pngheight,
+ gdImageSX(psimage),gdImageSY(psimage));
+#else
+ scaledimage=gdImageCreate(pngwidth,pngheight);
+ gdImageCopyResized(scaledimage,psimage,0,0,0,0,
+ pngwidth,pngheight,
+ gdImageSX(psimage),gdImageSY(psimage));
+#endif
+ gdImageDestroy(psimage);
+ }
+ return(scaledimage);
+}
+
+void newpsheader(char* special) {
+ struct pscode* tmp;
+ char* txt;
+
+ if (psheaderp==NULL && strcmp(special,"header=tex.pro")!=0) {
+ newpsheader("header=tex.pro");
+ newpsheader("header=color.pro");
+ newpsheader("header=special.pro");
+ }
+ if (strcmp(special+strlen(special)-4,".xcp")==0
+ && strncmp(special,"header=",7)==0)
+ InitXColorPrologue(special+7);
+ if (strncmp(special,"! /pgfH",7)==0)
+ newpsheader("! TeXDict begin");
+ if (psheaderp==NULL) {
+ if ((tmp=psheaderp=malloc(sizeof(struct pscode)))==NULL)
+ Fatal("cannot allocate space for PostScript header struct");
+ } else {
+ /* No duplicates. This still misses pre=..., because we still
+ change that. To be fixed */
+ tmp=psheaderp;
+ if (strcmp(tmp->special,special)==0)
+ return;
+ while(tmp->next!=NULL) {
+ tmp=tmp->next;
+ if (strcmp(tmp->special,special)==0)
+ return;
+ }
+ if ((tmp->next=malloc(sizeof(struct pscode)))==NULL)
+ Fatal("cannot allocate space for PostScript header struct");
+ tmp=tmp->next;
+ }
+ DEBUG_PRINT(DEBUG_GS,("\n PS HEADER "));
+ if ((txt=malloc(strlen(special)+1))==NULL)
+ Fatal("cannot malloc space for PostScript header");
+ strcpy(txt,special);
+ PSCodeInit(tmp,txt);
+}
+
+/*********************************************************************/
+/**************************** SetSpecial ***************************/
+/*********************************************************************/
+
+void SetSpecial(char * special, int32_t hh, int32_t vv)
+/* interpret a \special command, made up of keyword=value pairs,
+ * or !header or ps:literal_PostScript
+ */
+{
+ DEBUG_PRINT(DEBUG_DVI,(" '%s'",special));
+ SKIPSPACES(special);
+ /********************** Color specials ***********************/
+ if (strncmp(special,"background ",11)==0) {
+ background(special+11);
+ return;
+ }
+ if (strncmp(special,"color ",6)==0) {
+ special+=6;
+ SKIPSPACES(special);
+ if (strncmp(special,"push ",5)==0) {
+ pushcolor(special+5);
+ } else {
+ if (strcmp(special,"pop")==0)
+ popcolor();
+ else
+ resetcolorstack(special);
+ }
+ return;
+ }
+
+ /******************* Image inclusion ********************/
+
+ /* Needed tests for regression: PNG, GIF, JPEG and EPS inclusion,
+ * for different gd versions */
+
+ if (strncmp(special,"PSfile=",7)==0) { /* PSfile */
+ char* psname = special+7;
+ int llx=0,lly=0,urx=0,ury=0,rwi=0,rhi=0;
+ bool clip=false;
+ int hresolution,vresolution;
+ int pngheight,pngwidth;
+
+ /* Remove quotation marks around filename. If no quotation marks,
+ use first word as filename */
+ if (*psname=='"') {
+ psname++;
+ special=strrchr(psname,'"');
+ } else {
+ special=strchr(psname,' ');
+ }
+ if (special!=NULL) {
+ *special='\0';
+ special++;
+ }
+
+ /* Retrieve parameters */
+ SKIPSPACES(special);
+ while(special && *special) {
+ if (strncmp(special,"llx=",4)==0)
+ llx = strtol(special+4,&special,10);
+ else if (strncmp(special,"lly=",4)==0)
+ lly = strtol(special+4,&special,10);
+ else if (strncmp(special,"urx=",4)==0)
+ urx = strtol(special+4,&special,10);
+ else if (strncmp(special,"ury=",4)==0)
+ ury = strtol(special+4,&special,10);
+ else if (strncmp(special,"rwi=",4)==0)
+ rwi = strtol(special+4,&special,10);
+ else if (strncmp(special,"rhi=",4)==0)
+ rhi = strtol(special+4,&special,10);
+ else if (strncmp(special,"clip",4)==0)
+ {clip = true; special=special+4;}
+ while (*special && *special!=' ') special++;
+ SKIPSPACES(special);
+ }
+
+ /* Calculate resolution, and use our base resolution as a fallback. */
+ /* The factor 10 is magic, the dvips graphicx driver needs this. */
+ hresolution = ((dpi*rwi+urx-llx-1)/(urx - llx)+9)/10;
+ vresolution = ((dpi*rhi+ury-lly-1)/(ury - lly)+9)/10;
+ if (vresolution==0) vresolution = hresolution;
+ if (hresolution==0) hresolution = vresolution;
+ if (hresolution==0) hresolution = vresolution = dpi;
+
+ /* Convert from postscript 72 dpi resolution to our given resolution */
+ pngwidth = (dpi*rwi+719)/720; /* +719: round up */
+ pngheight = (dpi*rhi+719)/720;
+ if (pngwidth==0)
+ pngwidth = ((dpi*rhi*(urx-llx)+ury-lly-1)/(ury-lly)+719)/720;
+ if (pngheight==0)
+ pngheight = ((dpi*rwi*(ury-lly)+urx-llx-1)/(urx-llx)+719)/720;
+ if (pngheight==0) {
+ pngwidth = (dpi*(urx-llx)+71)/72;
+ pngheight = (dpi*(ury-lly)+71)/72;
+ }
+ if (page_imagep != NULL) { /* Draw into image */
+ struct pscode image;
+ gdImagePtr psimage=NULL;
+#ifndef HAVE_GDIMAGECREATEFROMPNGPTR
+ FILE* psstream;
+#endif
+
+ PSCodeInit(&image, NULL);
+ TEMPSTR(image.filename,kpse_find_file(psname,kpse_pict_format,0));
+ if (MmapFile(image.filename,&(image.fmmap)) || image.fmmap.size==0) {
+ Warning("Image file %s unusable, image will be left blank",
+ image.filename);
+ page_flags |= PAGE_GAVE_WARN;
+ return;
+ }
+ Message(BE_NONQUIET," <%s",psname);
+ switch ((unsigned char)*image.fmmap.data) {
+ case 0x89: /* PNG magic: "\211PNG\r\n\032\n" */
+ DEBUG_PRINT(DEBUG_DVI,("\n INCLUDE PNG \t%s",image.filename));
+#ifdef HAVE_GDIMAGECREATEFROMPNGPTR
+ psimage=gdImageCreateFromPngPtr(image.fmmap.size,image.fmmap.data);
+#else
+ psstream=fopen(image.filename,"rb");
+ psimage=gdImageCreateFromPng(psstream);
+ fclose(psstream);
+#endif
+ psimage=rescale(psimage,pngwidth,pngheight);
+ break;
+ case 'G': /* GIF magic: "GIF87" or "GIF89" */
+ DEBUG_PRINT(DEBUG_DVI,("\n INCLUDE GIF \t%s",image.filename));
+#ifdef HAVE_GDIMAGEGIF
+ psimage=rescale(gdImageCreateFromGifPtr(image.fmmap.size,
+ image.fmmap.data),
+ pngwidth,pngheight);
+#else
+ DEBUG_PRINT(DEBUG_DVI,(" (NO GIF DECODER)"));
+#endif
+ break;
+ case 0xff: /* JPEG magic: 0xffd8 */
+ DEBUG_PRINT(DEBUG_DVI,("\n INCLUDE JPEG \t%s",image.filename));
+#ifdef HAVE_GDIMAGECREATEFROMJPEG
+#ifdef HAVE_GDIMAGECREATEFROMPNGPTR
+ psimage=gdImageCreateFromJpegPtr(image.fmmap.size,image.fmmap.data);
+#else
+ psstream=fopen(image.filename,"rb");
+ psimage=gdImageCreateFromJpeg(psstream);
+ fclose(psstream);
+#endif
+ psimage=rescale(psimage,pngwidth,pngheight);
+#else
+ DEBUG_PRINT(DEBUG_DVI,(" (NO JPEG DECODER)"));
+#endif
+ break;
+ default: /* Default, PostScript magic: "%!PS-Adobe" */
+ if (option_flags & NO_GHOSTSCRIPT) {
+ Warning("GhostScript calls disallowed by --noghostscript" );
+ page_flags |= PAGE_GAVE_WARN;
+ } else {
+ /* Use alpha blending, and render transparent postscript
+ images. The alpha blending works correctly only from
+ libgd 2.0.12 upwards */
+#ifdef HAVE_GDIMAGEPNGEX
+ if (page_imagep->trueColor) {
+ int tllx=llx,tlly=lly,turx=urx,tury=ury;
+
+ DEBUG_PRINT((DEBUG_DVI | DEBUG_GS),
+ ("\n GS RENDER \t%s -> pngalpha ",image.filename));
+ if (!clip) {
+ /* Render across the whole image */
+ tllx=llx-(hh+1)*72/hresolution;
+ tlly=lly-(gdImageSY(page_imagep)-vv-1)*72/vresolution;
+ turx=llx+(gdImageSX(page_imagep)-hh)*72/hresolution;
+ tury=lly+(vv+1)*72/vresolution;
+ DEBUG_PRINT((DEBUG_DVI | DEBUG_GS),
+ ("\n EXPAND BBOX \t%d %d %d %d -> %d %d %d %d",
+ llx,lly,urx,ury,tllx,tlly,turx,tury));
+#ifdef DEBUG
+ } else {
+ DEBUG_PRINT((DEBUG_DVI | DEBUG_GS),(", CLIPPED TO BBOX"));
+#endif
+ }
+ psimage = ps2png(&image, "-sDEVICE=pngalpha",
+ hresolution, vresolution,
+ tllx, tlly, turx, tury,
+ 255,255,255);
+ if (psimage==NULL)
+ Warning("No GhostScript pngalpha output, opaque image inclusion");
+ } else
+ Warning("Palette output, opaque image inclusion");
+#endif
+ if (psimage==NULL) {
+ /* png256 gives inferior result */
+ DEBUG_PRINT((DEBUG_DVI | DEBUG_GS),
+ ("\n GS RENDER \t%s -> png16m", image.filename));
+ psimage = ps2png(&image, "-sDEVICE=png16m",
+ hresolution, vresolution,
+ llx, lly, urx, ury,
+ cstack[0].red,cstack[0].green,cstack[0].blue);
+ clip=true;
+ page_flags |= PAGE_GAVE_WARN;
+ }
+ if (!clip) {
+ /* Rendering across the whole image */
+ hh=0;
+ vv=gdImageSY(psimage)-1;
+ }
+ }
+ }
+ UnMmapFile(&(image.fmmap));
+ if (psimage!=NULL) {
+ DEBUG_PRINT(DEBUG_DVI,
+ ("\n GRAPHIC(X|S) INCLUDE \t%s (%d,%d) res %dx%d at (%d,%d)",
+ psname,gdImageSX(psimage),gdImageSY(psimage),
+ hresolution,vresolution,hh,vv));
+#ifdef HAVE_GDIMAGECREATETRUECOLOR
+ if (psimage->trueColor && !page_imagep->trueColor)
+ gdImageTrueColorToPalette(psimage,0,256);
+#endif
+#ifdef HAVE_GDIMAGEPNGEX
+ gdImageAlphaBlending(page_imagep,1);
+#else
+ Warning("Using libgd < 2.0.12, opaque image inclusion");
+ page_flags |= PAGE_GAVE_WARN;
+#endif
+ gdImageCopy(page_imagep, psimage,
+ hh, vv-gdImageSY(psimage)+1,
+ 0,0,
+ gdImageSX(psimage),gdImageSY(psimage));
+#ifdef HAVE_GDIMAGEPNGEX
+ gdImageAlphaBlending(page_imagep,0);
+#endif
+ gdImageDestroy(psimage);
+ } else {
+ Warning("Unable to load %s, image will be left blank",image.filename);
+ page_flags |= PAGE_GAVE_WARN;
+ }
+ Message(BE_NONQUIET,">");
+ } else { /* Don't draw */
+ page_flags |= PAGE_TRUECOLOR;
+ DEBUG_PRINT(DEBUG_DVI,
+ ("\n GRAPHIC(X|S) INCLUDE \t%s (%d,%d) res %dx%d at (%d,%d)",
+ psname,pngheight,pngwidth,
+ hresolution,vresolution,hh,vv));
+ min(x_min,hh);
+ min(y_min,vv-pngheight+1);
+ max(x_max,hh+pngwidth);
+ max(y_max,vv+1);
+ }
+ return;
+ }
+
+ /******************* Raw PostScript ********************/
+
+ if (strncmp(special,"!/preview@version(",18)==0) {
+ int length=0;
+ special+=18;
+ while (special[length]!='\0' && special[length]!=')')
+ length++;
+ if (page_imagep==NULL)
+ Message(BE_NONQUIET," (preview-latex version %.*s)",length,special);
+ return;
+ }
+
+ /* preview-latex' tightpage option */
+ if (strncmp(special,"!/preview@tightpage",19)==0) {
+ special+=19;
+ SKIPSPACES(special);
+ if (strncmp(special,"true",4)==0) {
+ if (page_imagep==NULL)
+ Message(BE_NONQUIET," (preview-latex tightpage option detected, will use its bounding box)");
+ dvi->flags |= DVI_PREVIEW_LATEX_TIGHTPAGE;
+ }
+ return;
+ }
+ if (strncmp(special,"!userdict",9)==0
+ && strstr(special+10,"7{currentfile token not{stop}if 65781.76 div")!=NULL) {
+ if (page_imagep==NULL && ~dvi->flags & DVI_PREVIEW_LATEX_TIGHTPAGE)
+ Message(BE_NONQUIET," (preview-latex <= 0.9.1 tightpage option detected, will use its bounding box)");
+ dvi->flags |= DVI_PREVIEW_LATEX_TIGHTPAGE;
+ return;
+ }
+
+ /* preview-latex' dvips bop-hook redefinition */
+ if (strncmp(special,"!userdict",9)==0
+ && strstr(special+10,"preview-bop-")!=NULL) {
+ dvi->flags |= DVI_PREVIEW_BOP_HOOK;
+ if (page_imagep==NULL)
+ Message(BE_VERBOSE," (preview-latex beginning-of-page-hook detected)");
+ return;
+ }
+
+ if (dvi->flags & DVI_PREVIEW_BOP_HOOK && ~page_flags & PAGE_PREVIEW_BOP
+ && strncmp(special,"ps::",4)==0) {
+ page_flags |= PAGE_PREVIEW_BOP;
+ /* Hokay, decode bounding box */
+ dviunits adj_llx,adj_lly,adj_urx,adj_ury,ht,dp,wd;
+ adj_llx = strtol(special+4,&special,10);
+ adj_lly = strtol(special,&special,10);
+ adj_urx = strtol(special,&special,10);
+ adj_ury = strtol(special,&special,10);
+ ht = strtol(special,&special,10);
+ dp = strtol(special,&special,10);
+ wd = strtol(special,&special,10);
+ if (wd>0) {
+ x_offset_tightpage =
+ (-adj_llx+dvi->conv*shrinkfactor-1)/dvi->conv/shrinkfactor;
+ x_width_tightpage = x_offset_tightpage
+ +(wd+adj_urx+dvi->conv*shrinkfactor-1)/dvi->conv/shrinkfactor;
+ } else {
+ x_offset_tightpage =
+ (-wd+adj_urx+dvi->conv*shrinkfactor-1)/dvi->conv/shrinkfactor;
+ x_width_tightpage = x_offset_tightpage
+ +(-adj_llx+dvi->conv*shrinkfactor-1)/dvi->conv/shrinkfactor;
+ }
+ /* y-offset = height - 1 */
+ y_offset_tightpage =
+ (((ht>0)?ht:0)+adj_ury+dvi->conv*shrinkfactor-1)/dvi->conv/shrinkfactor-1;
+ y_width_tightpage = y_offset_tightpage+1
+ +(((dp>0)?dp:0)-adj_lly+dvi->conv*shrinkfactor-1)/dvi->conv/shrinkfactor;
+ return;
+ }
+
+ if (special[0]=='"' || strncmp(special,"ps:",3)==0) { /* Literal PostScript */
+ if (page_imagep != NULL) { /* Draw into image */
+ static struct pscode *pscodep=NULL;
+ static bool psenvironment=false;
+ bool nextisps;
+ struct pscode *tmp;
+ gdImagePtr psimage=NULL;
+ char *txt;
+
+ /* Some packages split their literal PostScript code into
+ several specials. Check for those, and concatenate them so
+ that they're given to one and the same invocation of gs */
+ if (pscodep==NULL) {
+ Message(BE_NONQUIET," <literal PS");
+ if ((tmp=pscodep=malloc(sizeof(struct pscode)))==NULL)
+ Fatal("cannot allocate space for raw PostScript struct");
+ } else {
+ tmp=pscodep;
+ while(tmp->next != NULL)
+ tmp=tmp->next;
+ if ((tmp->next=malloc(sizeof(struct pscode)))==NULL)
+ Fatal("cannot allocate space for raw PostScript struct");
+ tmp=tmp->next;
+ }
+ if (strncmp(special,"ps::[begin]",11)==0)
+ psenvironment=true;
+ else if (strncmp(special,"ps::[end]",9)==0)
+ psenvironment=false;
+ else if (strcmp(special,"ps:: pgfo")==0)
+ /* PostScript code to start page for pgf PostScript
+ specials. The first numbers are generally valid for the bop
+ instruction, and the latter code is to move the origin to
+ the right place. */
+ special="ps:: 39139632 55387786 1000 600 600 (tikzdefault.dvi) @start 1 0 bop pgfo 0 0 matrix defaultmatrix transform itransform translate";
+ else if (strcmp(special,"ps:: pgfc")==0)
+ special="ps:: pgfc eop end";
+ nextisps=DVIIsNextPSSpecial(dvi);
+ if (psenvironment || nextisps) {
+ if (!nextisps) {
+ Warning("PostScript environment contains DVI commands");
+ page_flags |= PAGE_GAVE_WARN;
+ }
+ /* Don't use alloca, we do not want to run out of stack space */
+ DEBUG_PRINT(DEBUG_GS,("\n PS SPECIAL "));
+ txt=malloc(strlen(special)+1);
+ strcpy(txt,special);
+ PSCodeInit(tmp,txt);
+ return;
+ }
+ DEBUG_PRINT(DEBUG_DVI,("\n LAST PS SPECIAL "));
+ PSCodeInit(tmp,special);
+ /* Now, render image */
+ if (option_flags & NO_GHOSTSCRIPT)
+ Warning("GhostScript calls disallowed by --noghostscript" );
+ else {
+ /* Use alpha blending, and render transparent postscript
+ images. The alpha blending works correctly only from
+ libgd 2.0.12 upwards */
+#ifdef HAVE_GDIMAGEPNGEX
+ if (page_imagep->trueColor) {
+ /* Render across the whole image */
+ psimage = ps2png(pscodep, "-sDEVICE=pngalpha",
+ dpi,dpi,
+ -(hh+1)*72/dpi,
+ -(gdImageSY(page_imagep)-vv-1)*72/dpi,
+ (gdImageSX(page_imagep)-hh)*72/dpi,
+ (vv+1)*72/dpi,
+ 255,255,255);
+ if (psimage!=NULL) {
+ gdImageAlphaBlending(page_imagep,1);
+ gdImageCopy(page_imagep, psimage,
+ 0,0,0,0,
+ gdImageSX(psimage),gdImageSY(psimage));
+ gdImageAlphaBlending(page_imagep,0);
+ gdImageDestroy(psimage);
+ } else
+ Warning("No GhostScript pngalpha output, cannot render raw PostScript");
+ } else
+ Warning("Palette output, cannot include raw PostScript");
+#else
+ Warning("Using libgd < 2.0.12, unable to include raw PostScript");
+#endif
+ }
+ while(pscodep->next != NULL) {
+ tmp=pscodep->next;
+ free(pscodep->special);
+ free(pscodep);
+ pscodep=tmp;
+ }
+ free(pscodep);
+ pscodep=NULL;
+ if (psimage==NULL)
+ page_flags |= PAGE_GAVE_WARN;
+ Message(BE_NONQUIET,">");
+ } else { /* Don't draw */
+ page_flags |= PAGE_TRUECOLOR;
+ }
+ return;
+ }
+
+ if (strncmp(special,"papersize=",10)==0) { /* papersize spec, ignored */
+ return;
+ }
+
+ if (special[0]=='!' || strncmp(special,"header=",7)==0) { /* PS header */
+ newpsheader(special);
+ return;
+ }
+
+ if (strncmp(special,"src:",4)==0) { /* source special */
+ if ( page_imagep != NULL )
+ Message(BE_NONQUIET," at (%ld,%ld) source \\special{%s}",
+ hh, vv, special);
+ return;
+ }
+ if ( page_imagep != NULL ) {
+ Warning("at (%ld,%ld) unimplemented \\special{%s}",
+ hh, vv, special);
+ page_flags |= PAGE_GAVE_WARN;
+ }
+}
+