static fz_matrix pdfViewctm(PDFContext* ctx) {
fz_matrix ctm;
ctm = fz_identity();
ctm = fz_concat(ctm, fz_translate(0, -ctx->page->mediabox.y1));
ctm = fz_concat(ctm, fz_scale(ctx->zoom, -ctx->zoom));
ctm = fz_concat(ctm, fz_rotate(ctx->rotate + ctx->page->rotate));
return ctm;
}
fz_matrix pdfapp_viewctm(pdfapp_t *app)
{
fz_matrix ctm;
ctm = fz_identity();
ctm = fz_concat(ctm, fz_translate(0, -app->page->mediabox.y1));
ctm = fz_concat(ctm, fz_scale(app->zoom, -app->zoom));
ctm = fz_concat(ctm, fz_rotate(app->rotate + app->page->rotate));
return ctm;
}
static int fitsinside(fz_node *node, fz_rect clip)
{
fz_rect bbox;
bbox = fz_boundnode(node, fz_identity());
if (fz_isinfiniterect(bbox)) return 0;
if (fz_isemptyrect(bbox)) return 1;
if (bbox.x0 < clip.x0) return 0;
if (bbox.x1 > clip.x1) return 0;
if (bbox.y0 < clip.y0) return 0;
if (bbox.y1 > clip.y1) return 0;
return 1;
}
static fz_matrix getmatrix(fz_node *node)
{
if (node->parent)
{
fz_matrix ptm = getmatrix(node->parent);
if (fz_istransformnode(node))
return fz_concat(((fz_transformnode*)node)->m, ptm);
return ptm;
}
if (fz_istransformnode(node))
return ((fz_transformnode*)node)->m;
return fz_identity();
}
fz_matrix pdfmoz_pagectm(pdfmoz_t *moz, int pagenum)
{
page_t *page = moz->pages + pagenum;
fz_matrix ctm;
float zoom;
RECT rc;
GetClientRect(moz->hwnd, &rc);
zoom = (rc.right - rc.left) / (float) page->w;
ctm = fz_identity();
ctm = fz_concat(ctm, fz_translate(0, -page->page->mediabox.y1));
ctm = fz_concat(ctm, fz_scale(zoom, -zoom));
ctm = fz_concat(ctm, fz_rotate(page->page->rotate));
return ctm;
}
fz_error
fz_newtextnode(fz_textnode **textp, fz_font *font)
{
fz_textnode *text;
text = fz_malloc(sizeof(fz_textnode));
if (!text)
return fz_rethrow(-1, "out of memory");
fz_initnode((fz_node*)text, FZ_NTEXT);
text->font = fz_keepfont(font);
text->trm = fz_identity();
text->len = 0;
text->cap = 0;
text->els = nil;
*textp = text;
return fz_okay;
}
static fz_font *
fz_newfont(void)
{
fz_font *font;
font = fz_malloc(sizeof(fz_font));
font->refs = 1;
strcpy(font->name, "<unknown>");
font->ftface = nil;
font->ftsubstitute = 0;
font->fthint = 0;
font->t3matrix = fz_identity();
font->t3procs = nil;
font->t3widths = nil;
font->bbox.x0 = 0;
font->bbox.y0 = 0;
font->bbox.x1 = 1000;
font->bbox.y1 = 1000;
return font;
}
static void drawpnm(int pagenum, struct benchmark *loadtimes, struct benchmark *drawtimes)
{
fz_error error;
fz_matrix ctm;
fz_irect bbox;
fz_pixmap *pix;
char name[256];
char pnmhdr[256];
int i, x, y, w, h, b, bh;
int fd = -1;
long start;
long end;
long elapsed;
fz_md5 digest;
if (!drawpattern)
fz_md5init(&digest);
drawloadpage(pagenum, loadtimes);
if (benchmark)
gettime(&start);
ctm = fz_identity();
ctm = fz_concat(ctm, fz_translate(0, -drawpage->mediabox.y1));
ctm = fz_concat(ctm, fz_scale(drawzoom, -drawzoom));
ctm = fz_concat(ctm, fz_rotate(drawrotate + drawpage->rotate));
bbox = fz_roundrect(fz_transformaabb(ctm, drawpage->mediabox));
w = bbox.x1 - bbox.x0;
h = bbox.y1 - bbox.y0;
bh = h / drawbands;
if (drawpattern)
{
sprintf(name, drawpattern, drawcount++);
fd = open(name, O_BINARY|O_WRONLY|O_CREAT|O_TRUNC, 0666);
if (fd < 0)
die(fz_throw("ioerror: could not open file '%s'", name));
sprintf(pnmhdr, "P6\n%d %d\n255\n", w, h);
write(fd, pnmhdr, strlen(pnmhdr));
}
error = fz_newpixmap(&pix, bbox.x0, bbox.y0, w, bh, 4);
if (error)
die(error);
memset(pix->samples, 0xff, pix->h * pix->w * pix->n);
for (b = 0; b < drawbands; b++)
{
if (drawbands > 1)
fprintf(stderr, "drawing band %d / %d\n", b + 1, drawbands);
error = fz_rendertreeover(drawgc, pix, drawpage->tree, ctm);
if (error)
die(error);
if (drawpattern)
{
for (y = 0; y < pix->h; y++)
{
unsigned char *src = pix->samples + y * pix->w * 4;
unsigned char *dst = src;
for (x = 0; x < pix->w; x++)
{
dst[x * 3 + 0] = src[x * 4 + 1];
dst[x * 3 + 1] = src[x * 4 + 2];
dst[x * 3 + 2] = src[x * 4 + 3];
}
write(fd, dst, pix->w * 3);
memset(src, 0xff, pix->w * 4);
}
}
if (!drawpattern)
fz_md5update(&digest, pix->samples, pix->h * pix->w * 4);
pix->y += bh;
if (pix->y + pix->h > bbox.y1)
pix->h = bbox.y1 - pix->y;
}
fz_droppixmap(pix);
if (!drawpattern) {
unsigned char buf[16];
fz_md5final(&digest, buf);
for (i = 0; i < 16; i++)
fprintf(stderr, "%02x", buf[i]);
}
if (drawpattern)
close(fd);
drawfreepage();
if (benchmark)
{
gettime(&end);
elapsed = end - start;
if (elapsed < drawtimes->min)
{
drawtimes->min = elapsed;
drawtimes->minpage = pagenum;
}
if (elapsed > drawtimes->max)
{
drawtimes->max = elapsed;
drawtimes->maxpage = pagenum;
}
drawtimes->avg += elapsed;
drawtimes->pages++;
fprintf(stderr, " time %.3fs",
elapsed / 1000000.0);
}
fprintf(stderr, "\n");
}
fz_error *
pdf_loadshade(fz_shade **shadep, pdf_xref *xref, fz_obj *dict, fz_obj *ref)
{
fz_error *error;
fz_matrix mat;
fz_obj *obj;
fz_obj *shd;
if ((*shadep = pdf_finditem(xref->store, PDF_KSHADE, ref)))
return nil;
/*
* Type 2 pattern dictionary
*/
if (fz_dictgets(dict, "PatternType"))
{
pdf_logshade("load shade pattern %d %d {\n", fz_tonum(ref), fz_togen(ref));
obj = fz_dictgets(dict, "Matrix");
if (obj)
{
mat = pdf_tomatrix(obj);
pdf_logshade("matrix [%g %g %g %g %g %g]\n",
mat.a, mat.b, mat.c, mat.d, mat.e, mat.f);
}
else
{
mat = fz_identity();
}
obj = fz_dictgets(dict, "ExtGState");
if (obj)
{
pdf_logshade("extgstate ...\n");
}
obj = fz_dictgets(dict, "Shading");
if (!obj)
return fz_throw("syntaxerror: missing shading dictionary");
shd = obj;
error = pdf_resolve(&shd, xref);
if (error)
return error;
error = loadshadedict(shadep, xref, shd, obj, mat);
fz_dropobj(shd);
if (error)
return error;
pdf_logshade("}\n");
}
/*
* Naked shading dictionary
*/
else
{
error = loadshadedict(shadep, xref, dict, ref, fz_identity());
if (error)
return error;
}
error = pdf_storeitem(xref->store, PDF_KSHADE, ref, *shadep);
if (error)
{
fz_dropshade(*shadep);
return error;
}
return nil;
}
fz_error*
processPage(
soPdfFile* inFile,
int pageNo,
fz_rect *bbRect,
int rectCount
)
{
fz_error *error;
fz_obj *pageRef;
pdf_page *pdfPage;
fz_rect contentBox;
fz_rect mediaBox;
// Initialize
for (int ctr = 0; ctr < rectCount; ctr++)
bbRect[ctr] = fz_emptyrect;
// Get the page reference and load the page contents
pageRef = pdf_getpageobject(inFile->pageTree, pageNo);
error = pdf_loadpage(&pdfPage, inFile->xref, pageRef);
if (error != NULL)
{
// Ideally pdf_loadpage should render all the pages
// and this should never happen
return processErrorPage(inFile, pageRef, pageNo, bbRect, error);
}
// Get the bounding box for the page
mediaBox = pdfPage->mediabox;
float mbHeight = mediaBox.y1 - mediaBox.y0;
// calculate the bounding box for all the elements in the page
contentBox = fz_boundnode(pdfPage->tree->root, fz_identity());
float cbHeight = contentBox.y1 - contentBox.y0;
// If there is nothing on the page we return nothing.
// should we return an empty page instead ???
if (fz_isemptyrect(contentBox))
goto Cleanup;
// if contentBox is bigger than mediaBox then there are some
// elements that should not be display and hence we reset the
// content box to media box
if ((cbHeight > mbHeight) || ((contentBox.x1 - contentBox.x0) > (mediaBox.x1 - mediaBox.x0)))
{
// Calculate the new content box based on the content that is
// inside the the media box and recalculate cbHeight
contentBox = getContainingRect(pdfPage->tree->root, mediaBox);
cbHeight = contentBox.y1 - contentBox.y0;
}
#ifdef _blahblah
printf("-->Page %d\n", pageNo);
bbdump(pdfPage->tree->root, 1);
#endif
// The rotation takes place when we insert the page into destination
// If only the mupdf renderer could give accurate values of the
// bounding box of all the elements in a page, the splitting would
// be so much more easier without overlapping, cutting text, etc
switch(p_mode)
{
case FitHeight:
case FitWidth:
bbRect[0] = contentBox;
goto Cleanup;
case Fit2xHeight:
case Fit2xWidth:
// Let the processing happen.
break;
case SmartFitHeight:
case SmartFitWidth:
default:
return fz_throw("Mode(%d) not yet implemented.", p_mode);
break;
}
// If the contentBox is 60% of mediaBox then do not split
if (((cbHeight / mbHeight) * 100) <= 55)
{
bbRect[0] = contentBox;
goto Cleanup;
}
// Get the first split contents from top. The box we specify is
// top 55% (bottom + 45) of the contents
bbRect[0] = contentBox;
bbRect[0].y0 = bbRect[0].y0 + (float)(0.45 * cbHeight);
bbRect[0] = getContainingRect(pdfPage->tree->root, bbRect[0]);
// Check if the contents we got in first split is more than 40%
// of the total contents
float bbRect0Height = bbRect[0].y1 - bbRect[0].y0;
if (((bbRect0Height / cbHeight) * 100) >= 40)
{
// The content is more than 40%. Put the rest of the
// content in the second split and exit
bbRect[1] = contentBox;
bbRect[1].y1 = bbRect[1].y1 - bbRect0Height;
// Adjust the split box height by X points to make sure
// we get everything and dont have annoying tail cuts
bbRect[0].y0 -= 2;
goto Cleanup;
}
// Since the contents we got in first split is less than 40%
// of the total contents, split the content in half with overlap
float overlap = (cbHeight * (float)(p_overlap / 100)) / 2;
bbRect[0] = contentBox;
bbRect[0].y0 = bbRect[0].y0 + (float)(0.5 * cbHeight) - overlap;
bbRect[1] = contentBox;
bbRect[1].y1 = bbRect[1].y1 - (float)(0.5 * cbHeight) + overlap;
Cleanup:
// This function can overflow the stack when the pdf page
// to be rendered is very complex. I had to increase the
// stack size reserved for exe using compiler option
pdf_droppage(pdfPage);
return error;
}
fz_error *
pdf_loadxobject(pdf_xobject **formp, pdf_xref *xref, fz_obj *dict, fz_obj *ref)
{
fz_error *error;
pdf_xobject *form;
fz_obj *obj;
if ((*formp = pdf_finditem(xref->store, PDF_KXOBJECT, ref)))
{
pdf_keepxobject(*formp);
return fz_okay;
}
form = fz_malloc(sizeof(pdf_xobject));
if (!form)
return fz_throw("outofmem: xobject struct");
form->refs = 1;
form->resources = nil;
form->contents = nil;
/* Store item immediately, to avoid infinite recursion if contained
objects refer again to this xobject */
error = pdf_storeitem(xref->store, PDF_KXOBJECT, ref, form);
if (error)
{
pdf_dropxobject(form);
return fz_rethrow(error, "cannot store xobject resource");
}
pdf_logrsrc("load xobject %d %d (%p) {\n", fz_tonum(ref), fz_togen(ref), form);
obj = fz_dictgets(dict, "BBox");
form->bbox = pdf_torect(obj);
pdf_logrsrc("bbox [%g %g %g %g]\n",
form->bbox.x0, form->bbox.y0,
form->bbox.x1, form->bbox.y1);
obj = fz_dictgets(dict, "Matrix");
if (obj)
form->matrix = pdf_tomatrix(obj);
else
form->matrix = fz_identity();
pdf_logrsrc("matrix [%g %g %g %g %g %g]\n",
form->matrix.a, form->matrix.b,
form->matrix.c, form->matrix.d,
form->matrix.e, form->matrix.f);
obj = fz_dictgets(dict, "I");
form->isolated = fz_tobool(obj);
obj = fz_dictgets(dict, "K");
form->knockout = fz_tobool(obj);
pdf_logrsrc("isolated %d\n", form->isolated);
pdf_logrsrc("knockout %d\n", form->knockout);
obj = fz_dictgets(dict, "Resources");
if (obj)
{
error = pdf_resolve(&obj, xref);
if (error)
{
fz_dropobj(obj);
error = fz_rethrow(error, "cannot resolve xobject resources");
goto cleanup;
}
error = pdf_loadresources(&form->resources, xref, obj);
fz_dropobj(obj);
if (error)
{
error = fz_rethrow(error, "cannot load xobject resources");
goto cleanup;
}
}
error = pdf_loadstream(&form->contents, xref, fz_tonum(ref), fz_togen(ref));
if (error)
{
error = fz_rethrow(error, "cannot load xobject content stream");
goto cleanup;
}
pdf_logrsrc("stream %d bytes\n", form->contents->wp - form->contents->rp);
pdf_logrsrc("}\n");
*formp = form;
return fz_okay;
cleanup:
pdf_removeitem(xref->store, PDF_KXOBJECT, ref);
pdf_dropxobject(form);
return error;
}
void
drawpnm(int pagenum)
{
fz_error *error;
fz_matrix ctm;
fz_irect bbox;
fz_pixmap *pix;
char namebuf[256];
char buf[256];
int x, y, w, h, b, bh;
int fd;
drawloadpage(pagenum);
ctm = fz_identity();
ctm = fz_concat(ctm, fz_translate(0, -drawpage->mediabox.y1));
ctm = fz_concat(ctm, fz_scale(drawzoom, -drawzoom));
ctm = fz_concat(ctm, fz_rotate(drawrotate + drawpage->rotate));
bbox = fz_roundrect(fz_transformaabb(ctm, drawpage->mediabox));
w = bbox.x1 - bbox.x0;
h = bbox.y1 - bbox.y0;
bh = h / drawbands;
if (drawpattern)
{
sprintf(namebuf, drawpattern, drawcount++);
fd = open(namebuf, O_BINARY|O_WRONLY|O_CREAT|O_TRUNC, 0666);
if (fd < 0)
die(fz_throw("ioerror: could not open file '%s'", namebuf));
}
else
fd = 1;
sprintf(buf, "P6\n%d %d\n255\n", w, h);
write(fd, buf, strlen(buf));
error = fz_newpixmap(&pix, bbox.x0, bbox.y0, w, bh, 4);
if (error)
die(error);
memset(pix->samples, 0xff, pix->h * pix->w * pix->n);
for (b = 0; b < drawbands; b++)
{
if (drawbands > 1)
fprintf(stderr, "drawing band %d / %d\n", b + 1, drawbands);
error = fz_rendertreeover(drawgc, pix, drawpage->tree, ctm);
if (error)
die(error);
for (y = 0; y < pix->h; y++)
{
unsigned char *src = pix->samples + y * pix->w * 4;
unsigned char *dst = src;
for (x = 0; x < pix->w; x++)
{
dst[x * 3 + 0] = src[x * 4 + 1];
dst[x * 3 + 1] = src[x * 4 + 2];
dst[x * 3 + 2] = src[x * 4 + 3];
}
write(fd, dst, pix->w * 3);
memset(src, 0xff, pix->w * 4);
}
pix->y += bh;
if (pix->y + pix->h > bbox.y1)
pix->h = bbox.y1 - pix->y;
}
fz_droppixmap(pix);
if (drawpattern)
close(fd);
drawfreepage();
}
fz_error
pdf_loadxobject(pdf_xobject **formp, pdf_xref *xref, fz_obj *dict)
{
fz_error error;
pdf_xobject *form;
fz_obj *obj;
if ((*formp = pdf_finditem(xref->store, PDF_KXOBJECT, dict)))
{
pdf_keepxobject(*formp);
return fz_okay;
}
form = fz_malloc(sizeof(pdf_xobject));
form->refs = 1;
form->resources = nil;
form->contents = nil;
/* Store item immediately, to avoid possible recursion if objects refer back to this one */
pdf_storeitem(xref->store, PDF_KXOBJECT, dict, form);
pdf_logrsrc("load xobject (%d %d R) ptr=%p {\n", fz_tonum(dict), fz_togen(dict), form);
obj = fz_dictgets(dict, "BBox");
form->bbox = pdf_torect(obj);
pdf_logrsrc("bbox [%g %g %g %g]\n",
form->bbox.x0, form->bbox.y0,
form->bbox.x1, form->bbox.y1);
obj = fz_dictgets(dict, "Matrix");
if (obj)
form->matrix = pdf_tomatrix(obj);
else
form->matrix = fz_identity();
pdf_logrsrc("matrix [%g %g %g %g %g %g]\n",
form->matrix.a, form->matrix.b,
form->matrix.c, form->matrix.d,
form->matrix.e, form->matrix.f);
form->isolated = 0;
form->knockout = 0;
form->transparency = 0;
obj = fz_dictgets(dict, "Group");
if (obj)
{
fz_obj *attrs = obj;
form->isolated = fz_tobool(fz_dictgets(attrs, "I"));
form->knockout = fz_tobool(fz_dictgets(attrs, "K"));
obj = fz_dictgets(attrs, "S");
if (fz_isname(obj) && !strcmp(fz_toname(obj), "Transparency"))
form->transparency = 1;
}
pdf_logrsrc("isolated %d\n", form->isolated);
pdf_logrsrc("knockout %d\n", form->knockout);
pdf_logrsrc("transparency %d\n", form->transparency);
form->resources = fz_dictgets(dict, "Resources");
if (form->resources)
fz_keepobj(form->resources);
error = pdf_loadstream(&form->contents, xref, fz_tonum(dict), fz_togen(dict));
if (error)
{
pdf_removeitem(xref->store, PDF_KXOBJECT, dict);
pdf_dropxobject(form);
return fz_rethrow(error, "cannot load xobject content stream (%d %d R)", fz_tonum(dict), fz_togen(dict));
}
pdf_logrsrc("stream %d bytes\n", form->contents->wp - form->contents->rp);
pdf_logrsrc("}\n");
*formp = form;
return fz_okay;
}
static void pdfapp_showpage(pdfapp_t *app, int loadpage, int drawpage)
{
char buf[256];
fz_error error;
fz_device *idev, *tdev, *mdev;
fz_displaylist *list;
fz_matrix ctm;
fz_bbox bbox;
fz_obj *obj;
if (loadpage)
{
wincursor(app, WAIT);
if (app->page)
pdf_droppage(app->page);
app->page = nil;
//code change by kakai
kno_clearselect(app);
//code change by kakai
pdf_flushxref(app->xref, 0);
obj = pdf_getpageobject(app->xref, app->pageno);
error = pdf_loadpage(&app->page, app->xref, obj);
if (error)
pdfapp_error(app, error);
sprintf(buf, "%s - %d/%d", app->doctitle,
app->pageno, app->pagecount);
wintitle(app, buf);
}
if (drawpage)
{
wincursor(app, WAIT);
ctm = pdfapp_viewctm(app);
bbox = fz_roundrect(fz_transformrect(ctm, app->page->mediabox));
list = fz_newdisplaylist();
mdev = fz_newlistdevice(list);
error = pdf_runcontentstream(mdev, fz_identity(), app->xref, app->page->resources, app->page->contents);
if (error)
pdfapp_error(app, error);
fz_freedevice(mdev);
if (app->image)
fz_droppixmap(app->image);
app->image = fz_newpixmapwithrect(pdf_devicergb, bbox);
fz_clearpixmap(app->image, 0xFF);
idev = fz_newdrawdevice(app->cache, app->image);
fz_executedisplaylist(list, idev, ctm);
fz_freedevice(idev);
if (app->text)
fz_freetextspan(app->text);
app->text = fz_newtextspan();
tdev = fz_newtextdevice(app->text);
fz_executedisplaylist(list, tdev, ctm);
fz_freedevice(tdev);
fz_freedisplaylist(list);
//code change by kakai
kno_allocselection(app);
kno_applyselect(app);
//code change by kakai
winconvert(app, app->image);
}
pdfapp_panview(app, app->panx, app->pany);
if (app->shrinkwrap)
{
int w = app->image->w;
int h = app->image->h;
if (app->winw == w)
app->panx = 0;
if (app->winh == h)
app->pany = 0;
if (w > app->scrw * 90 / 100)
w = app->scrw * 90 / 100;
if (h > app->scrh * 90 / 100)
h = app->scrh * 90 / 100;
if (w != app->winw || h != app->winh)
winresize(app, w, h);
}
winrepaint(app);
wincursor(app, ARROW);
}
