void pageregions_insert(PAGEREGIONS *dst,int index,PAGEREGIONS *src)
{
static char *funcname="pageregions_insert";
int i;
if (src->n<1)
return;
if (dst->n + src->n > dst->na)
{
int newsize;
newsize = dst->na<16 ? 32 : dst->na*2;
while (newsize < dst->n + src->n)
newsize *= 2;
willus_mem_realloc_robust_warn((void **)&dst->pageregion,newsize*sizeof(PAGEREGION),
dst->na*sizeof(PAGEREGION),funcname,10);
dst->na=newsize;
}
/* Must initialize the new array elements that will be used */
for (i=dst->n;i<dst->n+src->n;i++)
pageregion_init(&dst->pageregion[i]);
for (i=dst->n+src->n-1;i-src->n>=index;i--)
pageregion_copy(&dst->pageregion[i],&dst->pageregion[i-src->n]);
for (i=0;i<src->n;i++)
pageregion_copy(&dst->pageregion[i+index],&src->pageregion[i]);
dst->n += src->n;
}
/*
** Allocates new space for text buffer.
*/
void ocrwords_add_word(OCRWORDS *words,OCRWORD *word)
{
static char *funcname="ocrwords_add_word";
int i;
if (words->n>=words->na)
{
int newsize;
newsize = words->na<512 ? 1024 : words->na*2;
willus_mem_realloc_robust_warn((void **)&words->word,newsize*sizeof(OCRWORD),
words->na*sizeof(OCRWORD),funcname,10);
for (i=words->na;i<newsize;i++)
ocrword_init(&words->word[i]);
words->na=newsize;
}
words->word[words->n]=(*word);
words->word[words->n].text=NULL;
willus_mem_alloc_warn((void **)&words->word[words->n].text,strlen(word->text)+1,funcname,10);
strcpy(words->word[words->n].text,word->text);
/* Copy char positions */
words->word[words->n].n=utf8_to_unicode(NULL,word->text,1000000);
if (word->cpos!=NULL)
{
willus_mem_alloc_warn((void **)&words->word[words->n].cpos,
words->word[words->n].n*sizeof(double),funcname,10);
for (i=0;i<words->word[words->n].n;i++)
words->word[words->n].cpos[i] = word->cpos[i];
}
else
words->word[words->n].cpos=NULL;
words->n++;
}
void strbuf_ensure(STRBUF *sbuf,int n)
{
static char *funcname="strbuf_ensure";
if (n>sbuf->na)
{
willus_mem_realloc_robust_warn((void**)&sbuf->s,n,sbuf->na,funcname,10);
if (sbuf->na==0)
sbuf->s[0]='\0';
sbuf->na=n;
}
}
void wrectmaps_add_wrectmap(WRECTMAPS *wrectmaps,WRECTMAP *wrectmap)
{
static char *funcname="wrectmaps_add_wrectmap";
if (wrectmaps->n>=wrectmaps->na)
{
int newsize;
newsize = wrectmaps->na < 128 ? 256 : wrectmaps->na*2;
willus_mem_realloc_robust_warn((void **)&wrectmaps->wrectmap,newsize*sizeof(WRECTMAP),
wrectmaps->na*sizeof(WRECTMAP),funcname,10);
wrectmaps->na=newsize;
}
wrectmaps->wrectmap[wrectmaps->n++]=(*wrectmap);
}
void wpdfboxes_add_box(WPDFBOXES *boxes,WPDFBOX *box)
{
static char *funcname="wpdfboxes_add_box";
if (boxes->n>=boxes->na)
{
int newsize;
newsize = boxes->na < 1024 ? 2048 : boxes->na*2;
willus_mem_realloc_robust_warn((void **)&boxes->box,newsize*sizeof(WPDFBOX),
boxes->na*sizeof(WPDFBOX),funcname,10);
boxes->na=newsize;
}
boxes->box[boxes->n++]=(*box);
}
void k2pdfopt_files_add_file(K2PDFOPT_FILES *k2files,char *filename)
{
static char *funcname="k2pdfopt_files_add_file";
if (k2files->n >= k2files->na)
{
int newsize;
newsize = k2files->na<128 ? 256 : k2files->na*2;
willus_mem_realloc_robust_warn((void **)&k2files->file,sizeof(char *)*newsize,
sizeof(char *)*k2files->na,funcname,10);
k2files->na=newsize;
}
willus_mem_alloc_warn((void **)&k2files->file[k2files->n],strlen(filename)+1,funcname,10);
strcpy(k2files->file[k2files->n],filename);
k2files->n++;
}
void pageregions_add_pageregion(PAGEREGIONS *regions,BMPREGION *bmpregion,int level,
int fullspan,int notes)
{
static char *funcname="pageregions_add_pageregion";
if (regions->n>=regions->na)
{
int newsize;
newsize = regions->na<16 ? 32 : regions->na*2;
willus_mem_realloc_robust_warn((void **)®ions->pageregion,newsize*sizeof(PAGEREGION),
regions->na*sizeof(PAGEREGION),funcname,10);
regions->na=newsize;
}
pageregion_init(®ions->pageregion[regions->n]);
bmpregion_copy(®ions->pageregion[regions->n].bmpregion,bmpregion,1);
regions->pageregion[regions->n].level=level;
regions->pageregion[regions->n].fullspan=fullspan;
regions->pageregion[regions->n].notes=notes;
regions->n++;
}
static void str0_addstring(char **list,int *na,char *s)
{
char *d;
int i,needed;
static char *funcname="str0_addstring";
if (s==NULL || s[0]=='\0')
return;
i=str0_len(*list);
needed=i+strlen(s)+2;
if ((*list)==NULL || (needed > (*na)))
{
int newsize;
newsize = (*na)<512 ? 1024 : (*na)*2;
while (newsize < needed)
newsize *= 2;
willus_mem_realloc_robust_warn((void **)list,newsize,(*na),funcname,10);
(*na)=newsize;
}
d=(*list);
strcpy(&d[i],s);
d[i+strlen(s)+1]='\0';
}
static int wmupdf_pdfdoc_newpages(pdf_document *xref,fz_context *ctx,WPDFPAGEINFO *pageinfo,
int use_forms,FILE *out)
{
static char *funcname="wmupdf_pdfdoc_newpages";
pdf_obj *root,*oldroot,*pages,*kids,*countobj,*parent,*olddests;
pdf_obj *srcpageobj,*srcpagecontents;
pdf_obj *destpageobj,*destpagecontents,*destpageresources;
double srcx0,srcy0;
int qref,i,i0,pagecount,srccount,destpageref,nbb;
int *srcpageused;
char *bigbuf;
double srcpagerot;
/* Avoid compiler warning */
destpageref = 0;
destpageobj = NULL;
srcx0=srcy0=0.;
/* Keep only pages/type and (reduced) dest entries to avoid references to unretained pages */
pagecount = pdf_count_pages(xref);
if (use_forms)
{
willus_mem_alloc_warn((void **)&srcpageused,sizeof(int)*(pagecount+1),funcname,10);
/* Mark all source pages as "not done" */
for (i=0;i<=pagecount;i++)
srcpageused[i]=0;
nbb=4096;
willus_mem_alloc_warn((void **)&bigbuf,nbb,funcname,10);
bigbuf[0]='\0';
}
oldroot = pdf_dict_gets(xref->trailer,"Root");
/*
** pages points to /Pages object in PDF file.
** Has: /Type /Pages, /Count <numpages>, /Kids [ obj obj obj obj ]
*/
pages = pdf_dict_gets(oldroot,"Pages");
olddests = pdf_load_name_tree(xref,"Dests");
/*
** Create new root object with only /Pages and /Type (and reduced dest entries)
** to avoid references to unretained pages.
*/
root = pdf_new_dict(ctx,4);
pdf_dict_puts(root,"Type",pdf_dict_gets(oldroot,"Type"));
pdf_dict_puts(root,"Pages",pages);
pdf_update_object(xref,pdf_to_num(oldroot),root);
pdf_drop_obj(root);
/* Parent indirectly references the /Pages object in the file */
/* (Each new page we create has to point to this.) */
parent = pdf_new_indirect(ctx, pdf_to_num(pages), pdf_to_gen(pages), xref);
/* Create a new kids array with only the pages we want to keep */
kids = pdf_new_array(ctx, 1);
qref=0;
/* Avoid compiler warnings */
destpageresources=NULL;
destpagecontents=NULL;
srcpagecontents=NULL;
srcpagerot=0.;
for (i=0;i<=pageinfo->boxes.n;i++)
if (pageinfo->boxes.box[i].dstpage>0)
break;
if (i>0)
{
if (i<pageinfo->boxes.n)
memmove(&pageinfo->boxes.box[0],&pageinfo->boxes.box[i],sizeof(WPDFBOX)*pageinfo->boxes.n-i);
pageinfo->boxes.n -= i;
}
/* Walk through PFDBOXES array */
for (i=srccount=i0=0;i<=pageinfo->boxes.n;i++)
{
WPDFBOX *box;
int j,k,newsrc;
static char buf[512];
pdf_obj *s1indirect,*qindirect,*rotobj;
static double cpm[3][3],m[3][3],m1[3][3];
static double xclip[4],yclip[4];
/*
printf("box[%d]\n",i);
if (i<pageinfo->boxes.n)
{
box=&pageinfo->boxes.box[i];
printf(" srcpage=%d, dstpage=%d\n",box->srcbox.pageno,box->dstpage);
printf(" x0=%g, y0=%g\n",box->x0,box->y0);
printf(" w=%g, h=%g\n",box->w,box->h);
printf(" x1=%g, y1=%g\n",box->x1,box->y1);
printf(" sr=%g, dr=%g\n",box->srcrot_deg,box->dstrot_deg);
printf(" scale=%g\n",box->scale);
}
*/
/* Check to see if we are done with an output page */
if (srccount>0 && (i==pageinfo->boxes.n
|| (i>0 && pageinfo->boxes.box[i].dstpage!=pageinfo->boxes.box[i-1].dstpage)))
{
pdf_obj *newpageref;
/*
** Store destination page into document structure
*/
/*
printf(" ADDING NEW PAGE. (srccount=%d)\n",srccount);
*/
if (use_forms)
{
pdf_obj *dest_stream;
/* Create new object in document for destination page stream */
dest_stream = pdf_new_indirect(ctx,new_stream_object(xref,ctx,bigbuf),
0,(void *)xref);
/* Store this into the destination page contents array */
pdf_array_push(destpagecontents,dest_stream);
pdf_drop_obj(dest_stream);
}
newpageref=pdf_new_indirect(ctx,destpageref,0,(void *)xref);
/* Reference parent list of pages */
pdf_dict_puts(destpageobj,"Parent",parent);
pdf_dict_puts(destpageobj,"Contents",destpagecontents);
pdf_dict_puts(destpageobj,"Resources",destpageresources);
/* Store page object in document's kids array */
pdf_array_push(kids,newpageref);
/* Update document with new page */
pdf_update_object(xref,destpageref,destpageobj);
/* Clean up */
pdf_drop_obj(newpageref);
pdf_drop_obj(destpageresources);
pdf_drop_obj(destpagecontents);
pdf_drop_obj(destpageobj);
/* Reset source page and index to start of new destination page */
i0=i;
srccount=0;
}
/* Quit loop if beyond last box */
if (i>=pageinfo->boxes.n)
break;
box=&pageinfo->boxes.box[i];
if (box->srcbox.pageno<1 || box->srcbox.pageno>pagecount)
continue;
/* Is this a source page we haven't processed yet (for this destination page)? */
for (newsrc=1,j=i0;j<i;j++)
{
if (pageinfo->boxes.box[j].srcbox.pageno==box->srcbox.pageno)
{
newsrc=0;
break;
}
}
if (newsrc)
{
double v[4];
srccount++;
if (use_forms)
srcpageused[box->srcbox.pageno]=1;
/*
printf(" NEW SOURCE PAGE (srccount=%d)\n",srccount);
*/
if (srccount==1)
{
/*
** Start a new destination page.
**
** Each new page object is a dict type with:
** /Type /Page
** /Contents (array of objects)
** /Resources (dict)
** /MediaBox [0 0 612 792]
** /Parent <PagesObj>
** [Can have /Rotate 90, for example.]
**
*/
/*
printf(" (STARTING NEW DEST. PAGE)\n");
*/
destpageobj=start_new_destpage(ctx,box->dst_width_pts,box->dst_height_pts);
destpageresources=pdf_new_dict(ctx,1);
if (use_forms)
pdf_dict_puts(destpageresources,"XObject",pdf_new_dict(ctx,1));
destpageref=pdf_create_object(xref);
destpagecontents=pdf_new_array(ctx,1);
/* Init the destination page stream for forms */
if (use_forms)
bigbuf[0]='\0';
}
/* New source page, so get the source page objects */
srcpageobj = xref->page_objs[box->srcbox.pageno-1];
wmupdf_page_bbox(srcpageobj,v);
srcx0=v[0];
srcy0=v[1];
/*
printf("SRCX0=%g, SRCY0=%g\n",srcx0,srcy0);
*/
rotobj=pdf_dict_gets(srcpageobj,"Rotate");
srcpagerot = rotobj!=NULL ? pdf_to_real(rotobj) : 0.;
/*
printf("Page rotation = %g\n",srcpagerot);
*/
srcpagecontents=pdf_dict_gets(srcpageobj,"Contents");
/*
if (pdf_is_array(srcpagecontents))
{
int k;
printf(" source page contents = array.\n");
for (k=0;k<pdf_array_len(srcpagecontents);k++)
{
pdf_obj *obj;
obj=pdf_array_get(srcpagecontents,k);
if (pdf_is_indirect(obj))
{
printf(" contents[%d] = indirect (%d)\n",k,pdf_to_num(obj));
pdf_resolve_indirect(obj);
}
}
}
*/
if (use_forms)
{
pdf_obj *xobjdict;
int pageno;
xobjdict=pdf_dict_gets(destpageresources,"XObject");
pageno=box->srcbox.pageno;
pdf_dict_puts(xobjdict,xobject_name(pageno),xref->page_refs[pageno-1]);
pdf_dict_puts(destpageresources,"XObject",xobjdict);
}
else
{
pdf_obj *srcpageresources;
/* Merge source page resources into destination page resources */
srcpageresources=pdf_dict_gets(srcpageobj,"Resources");
/*
printf("box->dstpage=%d, srcpage=%d (ind.#=%d)\n",box->dstpage,box->srcbox.pageno,pdf_to_num(xref->page_refs[box->srcbox.pageno-1]));
*/
wmupdf_dict_merge(ctx,"Resources",destpageresources,srcpageresources);
}
}
/*
** Process this source box:
**
** Create a tranformation matrix and clipping path to only show the
** desired part of the source page at the appropriate place on the
** destination page.
**
** How the tranformation matrix works:
** - Translations shall be specified as [ 1 0 0 1 tx ty ], where tx and ty
** shall be the distances to translate the origin of the coordinate system
** in the horizontal and vertical dimensions, respectively.
**
** - Scaling shall be obtained by [ sx 0 0 sy 0 0 ]. This scales the coordinates
** so that 1 unit in the horizontal and vertical dimensions of the new coordinate
** system is the same size as sx and sy units, respectively, in the previous
** coordinate system.
**
** - Rotations shall be produced by [ cos q sin q -sin q cos q 0 0 ], which has the
** effect of rotating the coordinate system axes by an angle q counter-clockwise.
**
** - Skew shall be specified by [ 1 tan a tan b 1 0 0 ], which skews the x axis by
** an angle a and the y axis by an angle b.
**
*/
wpdfbox_determine_original_source_position(box);
/*
printf("Before unrotate.\n");
printf("box->srcrot=%g\n",box->srcrot_deg);
printf("box->x0=%g, box->y0=%g\n",box->x0,box->y0);
printf("box->w=%g, box->h=%g\n",box->w,box->h);
printf("box->pw=%g, box->ph=%g\n",box->src_width_pts,box->src_height_pts);
*/
if (fabs(srcpagerot) > 1.0e-4)
wpdfbox_unrotate(box,srcpagerot);
/*
printf("box->srcrot=%g\n",box->srcrot_deg);
printf("box->x0=%g, box->y0=%g\n",box->x0,box->y0);
printf("box->w=%g, box->h=%g\n",box->w,box->h);
printf("box->pw=%g, box->ph=%g\n",box->src_width_pts,box->src_height_pts);
*/
matrix_unity(m,1.);
/*
printf("xfmatrix = [ %9.6f %9.6f %9.6f ]\n"
" [ %9.6f %9.6f %9.6f ]\n"
" [ %9.6f %9.6f %9.6f ]\n",
m[0][0],m[0][1],m[0][2],
m[1][0],m[1][1],m[1][2],
m[2][0],m[2][1],m[2][2]);
*/
matrix_translate(m1,-box->x0-srcx0,-box->y0-srcy0);
matrix_mul(m,m1);
matrix_rotate(m1,-box->srcrot_deg+box->dstrot_deg);
matrix_mul(m,m1);
matrix_unity(m1,box->scale);
matrix_mul(m,m1);
matrix_translate(m1,box->x1,box->y1);
matrix_mul(m,m1);
matrix_zero_round(m);
matrix_rotate(cpm,box->srcrot_deg);
matrix_translate(m1,box->x0+srcx0,box->y0+srcy0);
matrix_mul(cpm,m1);
/*
printf("Clip matrix:\n");
printf("xfmatrix = [ %9.6f %9.6f %9.6f ]\n"
" [ %9.6f %9.6f %9.6f ]\n"
" [ %9.6f %9.6f %9.6f ]\n",
cpm[0][0],cpm[0][1],cpm[0][2],
cpm[1][0],cpm[1][1],cpm[1][2],
cpm[2][0],cpm[2][1],cpm[2][2]);
*/
set_clip_array(xclip,yclip,box->srcrot_deg,box->w,box->h);
for (k=0;k<4;k++)
matrix_xymul(cpm,&xclip[k],&yclip[k]);
/*
printf("Clip path:\n %7.2f %7.2f\n %7.2f,%7.2f\n %7.2f,%7.2f\n"
" %7.2f %7.2f\n %7.2f,%7.2f\n",
xclip[0],yclip[0],xclip[1],yclip[1],xclip[2],yclip[2],
xclip[3],yclip[3],xclip[0],yclip[0]);
*/
strcpy(buf,"q");
for (k=0;k<=2;k++)
{
cat_pdf_double(buf,m[k][0]);
cat_pdf_double(buf,m[k][1]);
}
strcat(buf," cm");
for (k=0;k<=4;k++)
{
cat_pdf_double(buf,xclip[k&3]);
cat_pdf_double(buf,yclip[k&3]);
strcat(buf,k==0 ? " m" : " l");
}
strcat(buf," W n");
if (use_forms)
{
/* FORM METHOD */
sprintf(&buf[strlen(buf)]," /%s Do Q\n",xobject_name(box->srcbox.pageno));
if (strlen(bigbuf)+strlen(buf) > nbb)
{
int newsize;
newsize=nbb*2;
willus_mem_realloc_robust_warn((void **)&bigbuf,newsize,nbb,funcname,10);
nbb=newsize;
}
strcat(bigbuf,buf);
}
else
{
/* NO-FORMS METHOD */
strcat(buf,"\n");
/* Create new objects in document for tx matrix and restore matrix */
s1indirect = pdf_new_indirect(ctx,new_stream_object(xref,ctx,buf),0,(void *)xref);
if (qref==0)
qref=new_stream_object(xref,ctx,"Q\n");
qindirect = pdf_new_indirect(ctx,qref,0,(void *)xref);
/* Store this region into the destination page contents array */
pdf_array_push(destpagecontents,s1indirect);
if (pdf_is_array(srcpagecontents))
{
int k;
for (k=0;k<pdf_array_len(srcpagecontents);k++)
pdf_array_push(destpagecontents,pdf_array_get(srcpagecontents,k));
}
else
pdf_array_push(destpagecontents,srcpagecontents);
pdf_array_push(destpagecontents,qindirect);
pdf_drop_obj(s1indirect);
pdf_drop_obj(qindirect);
}
}
pdf_drop_obj(parent);
/* For forms, convert all original source pages to XObject Forms */
if (use_forms)
wmupdf_convert_pages_to_forms(xref,ctx,srcpageused);
/* Update page count and kids array */
countobj = pdf_new_int(ctx, pdf_array_len(kids));
pdf_dict_puts(pages, "Count", countobj);
pdf_drop_obj(countobj);
pdf_dict_puts(pages, "Kids", kids);
pdf_drop_obj(kids);
/* Also preserve the (partial) Dests name tree */
if (olddests)
wmupdf_preserve_old_dests(olddests,ctx,xref,pages);
if (use_forms)
{
/* Free memory */
willus_mem_free((double **)&bigbuf,funcname);
willus_mem_free((double **)&srcpageused,funcname);
}
return(0);
}
