static int pdfLoadPage(PDFContext* ctx) {
if (fullPageBuffer != NULL) {
fz_droppixmap(fullPageBuffer);
fullPageBuffer = NULL;
}
strcpy(lastPageError, "No error");
fz_error *error;
fz_obj *obj;
if (ctx->page)
pdf_droppage(ctx->page);
ctx->page = 0;
// empty store to save memory
if (ctx->xref->store)
pdf_emptystore(ctx->xref->store);
bk_pdf_resetbufferssize();
/*
pdf_item *item;
fz_obj *key;
list<fz_obj *key> keys;
for (item = ctx->xref->store->root; item; item = item->next) {
if (item->kind == PDF_KIMAGE)
keys << key;
}
list<fz_obj *key>::iterator it(keys.begin);
while (it != keys.end()) {
++it;
}
*/
obj = pdf_getpageobject(ctx->pages, ctx->pageno - 1, ctx->xref);
error = pdf_loadpage(&ctx->page, ctx->xref, obj);
if (error) {
printf("errLP1: %s\n", error->msg);
strcpy(lastPageError, error->msg);
return -1;
}
//printf("\n\n debug tree ------------------------------------------------\n");
//fz_debugtree(ctx->page->tree);
//optimizeNode(ctx->page->tree->root);
//printf("\n\n OPT debug tree OPT ------------------------------------------------\n");
//fz_debugtree(ctx->page->tree);
recalcScreenMediaBox(ctx);
if (BKUser::options.pdfFastScroll) {
pdfRenderFullPage(ctx);
}
return 0;
}
int
epdf_index_item_page_get(const Epdf_Document *doc, const Epdf_Index_Item *item)
{
fz_obj *dest;
int p;
int n;
int g;
if (!item || !item->link)
return -1;
if (PDF_LGOTO != item->link->kind)
return -1;
dest = item->link->dest;
p = 0;
if (fz_isint(dest))
{
p = fz_toint(dest);
return p;
}
if (fz_isdict(dest))
{
/* The destination is linked from a Go-To action's D array */
fz_obj *D;
D = fz_dictgets(dest, "D");
if (D && fz_isarray(D))
dest = fz_arrayget(D, 0);
}
n = fz_tonum(dest);
g = fz_togen(dest);
for (p = 1; p <= epdf_document_page_count_get(doc); p++)
{
fz_obj *page;
int np;
int gp;
page = pdf_getpageobject(doc->xref, p);
if (!page)
continue;
np = fz_tonum(page);
gp = fz_togen(page);
if (n == np && g == gp)
return p-1;
}
return 0;
}
void
drawloadpage(int pagenum, struct benchmark *loadtimes)
{
fz_error *error;
fz_obj *pageobj;
long start;
long end;
long elapsed;
fprintf(stderr, "draw %s page %d ", srcname, pagenum);
if (benchmark && loadtimes)
{
fflush(stderr);
gettime(&start);
}
pageobj = pdf_getpageobject(srcpages, pagenum - 1);
error = pdf_loadpage(&drawpage, src, pageobj);
if (error)
die(error);
if (benchmark && loadtimes)
{
gettime(&end);
elapsed = end - start;
if (elapsed < loadtimes->min)
{
loadtimes->min = elapsed;
loadtimes->minpage = pagenum;
}
if (elapsed > loadtimes->max)
{
loadtimes->max = elapsed;
loadtimes->maxpage = pagenum;
}
loadtimes->avg += elapsed;
loadtimes->pages++;
}
fprintf(stderr, "mediabox [ %g %g %g %g ] rotate %d%s",
drawpage->mediabox.x0, drawpage->mediabox.y0,
drawpage->mediabox.x1, drawpage->mediabox.y1,
drawpage->rotate,
benchmark ? "" : "\n");
if (benchmark)
fflush(stderr);
}
JNIEXPORT void JNICALL Java_com_artifex_mupdf_MuPDFCore_gotoPageInternal(
JNIEnv *env,
jobject thiz,
int page)
{
float zoom;
fz_matrix ctm;
fz_obj *pageobj;
fz_bbox bbox;
fz_error error;
fz_device *dev;
pdf_page *currentPage;
/* In the event of an error, ensure we give a non-empty page */
pageWidth = 100;
pageHeight = 100;
LOGE("Goto page %d...", page);
if (currentPageList != NULL)
{
fz_freedisplaylist(currentPageList);
currentPageList = NULL;
}
pagenum = page;
pageobj = pdf_getpageobject(xref, pagenum);
if (pageobj == NULL)
return;
error = pdf_loadpage(¤tPage, xref, pageobj);
if (error)
return;
zoom = resolution / 72;
currentMediabox = currentPage->mediabox;
currentRotate = currentPage->rotate;
ctm = fz_translate(0, -currentMediabox.y1);
ctm = fz_concat(ctm, fz_scale(zoom, -zoom));
ctm = fz_concat(ctm, fz_rotate(currentRotate));
bbox = fz_roundrect(fz_transformrect(ctm, currentMediabox));
pageWidth = bbox.x1-bbox.x0;
pageHeight = bbox.y1-bbox.y0;
/* Render to list */
currentPageList = fz_newdisplaylist();
dev = fz_newlistdevice(currentPageList);
error = pdf_runpage(xref, currentPage, dev, fz_identity);
pdf_freepage(currentPage);
if (error)
LOGE("cannot make displaylist from page %d", pagenum);
fz_freedevice(dev);
}
void
drawloadpage(int pagenum)
{
fz_error *error;
fz_obj *pageobj;
pageobj = pdf_getpageobject(srcpages, pagenum - 1);
error = pdf_loadpage(&drawpage, src, pageobj);
if (error)
die(error);
fprintf(stderr, "draw %s page %d mediabox [ %g %g %g %g ] rotate %d\n",
srcname, pagenum,
drawpage->mediabox.x0, drawpage->mediabox.y0,
drawpage->mediabox.x1, drawpage->mediabox.y1,
drawpage->rotate);
}
static void drawloadpage(int pagenum, struct benchmark *loadtimes)
{
fz_error error;
fz_obj *pageobj;
long start;
long end;
long elapsed;
fprintf(stderr, "draw %s:%03d ", basename, pagenum);
if (benchmark && loadtimes)
{
fflush(stderr);
gettime(&start);
}
error = pdf_getpageobject(xref, pagenum, &pageobj);
if (error)
die(error);
error = pdf_loadpage(&drawpage, xref, pageobj);
if (error)
die(error);
if (benchmark && loadtimes)
{
gettime(&end);
elapsed = end - start;
if (elapsed < loadtimes->min)
{
loadtimes->min = elapsed;
loadtimes->minpage = pagenum;
}
if (elapsed > loadtimes->max)
{
loadtimes->max = elapsed;
loadtimes->maxpage = pagenum;
}
loadtimes->avg += elapsed;
loadtimes->pages++;
}
if (benchmark)
fflush(stderr);
}
void
editcopy(int pagenum)
{
fz_error *error;
fz_obj *obj;
fz_obj *ref;
fz_obj *num;
printf("copy %s page %d\n", srcname, pagenum);
ref = srcpages->pref[pagenum - 1];
obj = pdf_getpageobject(srcpages, pagenum - 1);
fz_dictdels(obj, "Parent");
/*
fz_dictdels(obj, "B");
fz_dictdels(obj, "PieceInfo");
fz_dictdels(obj, "Metadata");
fz_dictdels(obj, "Annots");
fz_dictdels(obj, "Tabs");
*/
pdf_updateobject(src, fz_tonum(ref), fz_togen(ref), obj);
error = fz_arraypush(editobjects, ref);
if (error)
die(error);
error = fz_newint(&num, editmode);
if (error)
die(error);
error = fz_arraypush(editmodelist, num);
if (error)
die(error);
fz_dropobj(num);
}
static void retainpages(int argc, char **argv)
{
fz_error error;
fz_obj *oldroot, *root, *pages, *kids, *countobj, *parent;
/* Load the old page tree */
error = pdf_loadpagetree(xref);
if (error)
die(fz_rethrow(error, "cannot load page tree"));
/* Keep only pages/type entry to avoid references to unretained pages */
oldroot = fz_dictgets(xref->trailer, "Root");
pages = fz_dictgets(oldroot, "Pages");
root = fz_newdict(2);
fz_dictputs(root, "Type", fz_dictgets(oldroot, "Type"));
fz_dictputs(root, "Pages", fz_dictgets(oldroot, "Pages"));
pdf_updateobject(xref, fz_tonum(oldroot), fz_togen(oldroot), root);
fz_dropobj(root);
/* Create a new kids array with only the pages we want to keep */
parent = fz_newindirect(fz_tonum(pages), fz_togen(pages), xref);
kids = fz_newarray(1);
/* Retain pages specified */
while (argc - fz_optind)
{
int page, spage, epage;
char *spec, *dash;
char *pagelist = argv[fz_optind];
spec = fz_strsep(&pagelist, ",");
while (spec)
{
dash = strchr(spec, '-');
if (dash == spec)
spage = epage = pdf_getpagecount(xref);
else
spage = epage = atoi(spec);
if (dash)
{
if (strlen(dash) > 1)
epage = atoi(dash + 1);
else
epage = pdf_getpagecount(xref);
}
if (spage > epage)
page = spage, spage = epage, epage = page;
if (spage < 1)
spage = 1;
if (epage > pdf_getpagecount(xref))
epage = pdf_getpagecount(xref);
for (page = spage; page <= epage; page++)
{
fz_obj *pageobj = pdf_getpageobject(xref, page);
fz_obj *pageref = pdf_getpageref(xref, page);
fz_dictputs(pageobj, "Parent", parent);
/* Store page object in new kids array */
fz_arraypush(kids, pageref);
}
spec = fz_strsep(&pagelist, ",");
}
fz_optind++;
}
fz_dropobj(parent);
/* Update page count and kids array */
countobj = fz_newint(fz_arraylen(kids));
fz_dictputs(pages, "Count", countobj);
fz_dropobj(countobj);
fz_dictputs(pages, "Kids", kids);
fz_dropobj(kids);
}
int
copyPdfFile(
soPdfFile* inFile,
soPdfFile* outFile
)
{
fz_error *error;
int pageTreeNum, pageTreeGen;
assert(inFile != NULL);
assert(outFile != NULL);
//
// Process every page in the source file
//
{
printf("\nProcessing input page : ");
for (int pageNo = 0; pageNo < pdf_getpagecount(inFile->pageTree); pageNo++)
{
displayPageNumber(pageNo + 1, !pageNo);
// Get the page object from the source
fz_obj *pageRef = inFile->pageTree->pref[pageNo];
fz_obj *pageObj = pdf_getpageobject(inFile->pageTree, pageNo);
//
// Process the page. Each page can be split into up-to 3 pages
//
fz_rect bbRect[3];
error = processPage(inFile, pageNo, bbRect, 3);
if (error)
return soPdfError(error);
for (int ctr = 0; ctr < 3; ctr++)
{
// Check if this was a blank page
if (fz_isemptyrect(bbRect[ctr]))
break;
//
// copy the source page dictionary entry. The way this is done is basically
// by making a copy of the page dict object in the source file, and adding
// the copy in the source file. Then the copied page dict object is
// referenced and added to the destination file.
//
// This convoluted procedure is done because the copy is done by pdf_transplant
// function that accepts a source and destination. Whatever is referenced by
// destination object is deep copied
//
// allocate an object id and generation id in source file
//
// There is a bug in mupdf where the object allocation returns
// 0 oid and 0 gid when the input pdf file has iref stream
// so to work around the issue, we wrap the pdf_allocojbect
// in a for loop 10 times to get the number
//
int sNum, sGen, tries;
for (tries = 0; tries < 10; tries++)
{
error = pdf_allocobject(inFile->xref, &sNum, &sGen);
if (error)
return soPdfError(error);
// If sNum is non zero then the allocation was successful
if (sNum != 0)
break;
pdf_updateobject(inFile->xref, sNum, sGen, pageObj);
}
// If we didn't succeed even after 10 tries then this file
// is not going to work.
if (tries >= 10)
return soPdfError(fz_throw("cannot allocate object because of mupdf bug"));
// make a deep copy of the original page dict
fz_obj *pageObj2;
error = fz_deepcopydict(&pageObj2, pageObj);
if (error)
return soPdfError(error);
// update the source file with the duplicate page object
pdf_updateobject(inFile->xref, sNum, sGen, pageObj2);
fz_dropobj(pageObj2);
// create an indirect reference to the page object
fz_obj *pageRef2;
error = fz_newindirect(&pageRef2, sNum, sGen);
if (error)
return soPdfError(error);
// delete the parent dictionary entry
// Do we need to delete any other dictionary entry
// like annot, tabs, metadata, etc
fz_dictdels(pageObj2, "Parent");
// Set the media box
setPageMediaBox(inFile->xref, pageObj2, bbRect[ctr]);
// Set the rotation based on input
switch(p_mode)
{
// no rotation if fit height
case FitHeight:
case Fit2xHeight:
break;
// rotate -90 deg if fit width
case Fit2xWidth:
case FitWidth:
setPageRotate(pageObj2, p_reverseLandscape ? 90 : -90);
break;
case SmartFitHeight:
case SmartFitWidth:
default:
return soPdfError(fz_throw("Mode(%d) not yet implemented.", p_mode));
break;
}
// push the indirect reference to the destination list for copy by pdf_transplant
error = fz_arraypush(outFile->editobjs, pageRef2);
if (error)
return soPdfError(error);
}
}
}
// flush the objects into destination from source
{
fz_obj *results;
int outPages;
printf("\nCopying output page : ");
error = pdf_transplant(outFile->xref, inFile->xref, &results, outFile->editobjs);
if (error)
return soPdfError(error);
outPages = fz_arraylen(results);
for (int ctr = 0; ctr < outPages; ctr++)
{
displayPageNumber(ctr + 1, !ctr);
error = fz_arraypush(outFile->pagelist, fz_arrayget(results,
p_reverseLandscape ? outPages - 1 - ctr : ctr));
if (error)
return soPdfError(error);
}
fz_dropobj(results);
}
// flush page tree
// Create page tree and add back-links
{
fz_obj *pageTreeObj;
fz_obj *pageTreeRef;
// allocate a new object in out file for pageTree object
error = pdf_allocobject(outFile->xref, &pageTreeNum, &pageTreeGen);
if (error)
return soPdfError(error);
// Create a page tree object
error = fz_packobj(&pageTreeObj, "<</Type/Pages/Count %i/Kids %o>>",
fz_arraylen(outFile->pagelist), outFile->pagelist);
if (error)
return soPdfError(error);
// Update the xref entry with the pageTree object
pdf_updateobject(outFile->xref, pageTreeNum, pageTreeGen, pageTreeObj);
fz_dropobj(pageTreeObj);
// Create a reference to the pageTree object
error = fz_newindirect(&pageTreeRef, pageTreeNum, pageTreeGen);
if (error)
return soPdfError(error);
//
// For every page in the output file, update the parent entry
//
for (int ctr = 0; ctr < fz_arraylen(outFile->pagelist); ctr++)
{
fz_obj *pageObj;
int num = fz_tonum(fz_arrayget(outFile->pagelist, ctr));
int gen = fz_togen(fz_arrayget(outFile->pagelist, ctr));
// Get the page object from xreft
error = pdf_loadobject(&pageObj, outFile->xref, num, gen);
if (error)
return soPdfError(error);
// Update the parent entry in the page dictionary
error = fz_dictputs(pageObj, "Parent", pageTreeRef);
if (error)
return soPdfError(error);
// Update the entry with the updated page object
pdf_updateobject(outFile->xref, num, gen, pageObj);
fz_dropobj(pageObj);
}
}
// Create catalog and root entries
{
fz_obj *catObj, *infoObj;
int rootNum, rootGen;
int infoNum, infoGen;
//
// Copy the info catalog to the destination
// alloc an object id and gen id in destination file
error = pdf_allocobject(outFile->xref, &infoNum, &infoGen);
if (error)
return soPdfError(error);
// make a deep copy of the original page dict
error = fz_deepcopydict(&infoObj, inFile->xref->info);
if (error)
return soPdfError(error);
// update the dest file with object
pdf_updateobject(outFile->xref, infoNum, infoGen, infoObj);
outFile->xref->info = infoObj;
fz_dropobj(infoObj);
//
// root/catalog object creation
error = pdf_allocobject(outFile->xref, &rootNum, &rootGen);
if (error)
return soPdfError(error);
error = fz_packobj(&catObj, "<</Type/Catalog /Pages %r>>", pageTreeNum, pageTreeGen);
if (error)
return soPdfError(error);
pdf_updateobject(outFile->xref, rootNum, rootGen, catObj);
fz_dropobj(catObj);
// Create trailer
error = fz_packobj(&outFile->xref->trailer, "<</Root %r /Info %r>>",
rootNum, rootGen, infoNum, infoGen);
if (error)
return soPdfError(error);
}
// Update the info in the target file and save the xref
printf("\nSaving.\n");
error = setPageInfo(inFile, outFile);
if (error)
return soPdfError(error);
error = pdf_savexref(outFile->xref, outFile->fileName, NULL);
if (error)
return soPdfError(error);
if (g_errorCount != 0)
{
printf("\nFollowing issues encounted were ignored.\n\n");
for (int ctr = g_errorCount - 1; ctr >= 0; ctr--)
soPdfError(g_errorList[ctr]);
}
printf("\nSaved.\n");
return 0;
}
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;
}
void pdfmoz_open(pdfmoz_t *moz, char *filename)
{
SCROLLINFO si;
fz_error error;
fz_obj *obj;
fz_irect bbox;
int rot;
int i;
strcpy(moz->error, "");
error = fz_newrenderer(&moz->rast, pdf_devicergb, 0, 1024 * 512);
if (error)
pdfmoz_error(moz, error);
/*
* Open PDF and load xref table
*/
moz->filename = filename;
moz->xref = pdf_newxref();
error = pdf_loadxref(moz->xref, filename);
if (error)
{
error = pdf_repairxref(moz->xref, filename);
if (error)
pdfmoz_error(moz, error);
}
/*
* Handle encrypted PDF files
*/
error = pdf_decryptxref(moz->xref);
if (error)
pdfmoz_error(moz, error);
if (pdf_needspassword(moz->xref))
{
pdfmoz_warn(moz, "PDF file is encrypted and needs a password.");
}
moz->pagecount = pdf_getpagecount(moz->xref);
moz->pages = fz_malloc(sizeof(page_t) * moz->pagecount);
for (i = 0; i < moz->pagecount; i++)
{
fz_obj *pageobj;
pageobj = pdf_getpageobject(moz->xref, i);
moz->pages[i].obj = fz_keepobj(pageobj);
moz->pages[i].page = nil;
moz->pages[i].image = nil;
obj = fz_dictgets(moz->pages[i].obj, "CropBox");
if (!obj)
obj = fz_dictgets(moz->pages[i].obj, "MediaBox");
bbox = fz_roundrect(pdf_torect(obj));
moz->pages[i].w = bbox.x1 - bbox.x0;
moz->pages[i].h = bbox.y1 - bbox.y0;
rot = fz_toint(fz_dictgets(moz->pages[i].obj, "Rotate"));
if ((rot / 90) % 2)
{
int t = moz->pages[i].w;
moz->pages[i].w = moz->pages[i].h;
moz->pages[i].h = t;
}
moz->pages[i].px = 1 + PAD;
}
/*
* Load meta information
* TODO: move this into mupdf library
*/
obj = fz_dictgets(moz->xref->trailer, "Root");
moz->xref->root = fz_resolveindirect(obj);
if (!moz->xref->root)
pdfmoz_error(moz, fz_throw("syntaxerror: missing Root object"));
if (moz->xref->root)
fz_keepobj(moz->xref->root);
obj = fz_dictgets(moz->xref->trailer, "Info");
moz->xref->info = fz_resolveindirect(obj);
if (moz->xref->info)
fz_keepobj(moz->xref->info);
moz->doctitle = filename;
if (strrchr(moz->doctitle, '\\'))
moz->doctitle = strrchr(moz->doctitle, '\\') + 1;
if (strrchr(moz->doctitle, '/'))
moz->doctitle = strrchr(moz->doctitle, '/') + 1;
if (moz->xref->info)
{
obj = fz_dictgets(moz->xref->info, "Title");
if (obj)
moz->doctitle = pdf_toutf8(obj);
}
/*
* Start at first page
*/
si.cbSize = sizeof(si);
si.fMask = SIF_POS | SIF_RANGE; // XXX | SIF_PAGE;
si.nPos = 0;
si.nMin = 0;
si.nMax = 1;
si.nPage = 1;
SetScrollInfo(moz->hwnd, SB_VERT, &si, TRUE);
moz->scrollpage = 0;
moz->scrollyofs = 0;
InvalidateRect(moz->hwnd, NULL, FALSE);
}
static void
gatherinfo(int show, int page)
{
fz_error error;
fz_obj *pageobj;
fz_obj *rsrc;
fz_obj *font;
fz_obj *xobj;
fz_obj *shade;
fz_obj *pattern;
pageobj = pdf_getpageobject(xref, page);
if (!pageobj)
die(fz_throw("cannot retrieve info from page %d", page));
if (show & DIMENSIONS)
{
error = gatherdimensions(page, pageobj);
if (error)
die(fz_rethrow(error, "gathering dimensions at page %d (%d %d R)", page, fz_tonum(pageobj), fz_togen(pageobj)));
}
rsrc = fz_dictgets(pageobj, "Resources");
if (show & FONTS)
{
font = fz_dictgets(rsrc, "Font");
if (font)
{
error = gatherfonts(page, pageobj, font);
if (error)
die(fz_rethrow(error, "gathering fonts at page %d (%d %d R)", page, fz_tonum(pageobj), fz_togen(pageobj)));
}
}
if (show & IMAGES || show & XOBJS)
{
xobj = fz_dictgets(rsrc, "XObject");
if (xobj)
{
error = gatherimages(page, pageobj, xobj);
if (error)
die(fz_rethrow(error, "gathering images at page %d (%d %d R)", page, fz_tonum(pageobj), fz_togen(pageobj)));
error = gatherforms(page, pageobj, xobj);
if (error)
die(fz_rethrow(error, "gathering forms at page %d (%d %d R)", page, fz_tonum(pageobj), fz_togen(pageobj)));
error = gatherpsobjs(page, pageobj, xobj);
if (error)
die(fz_rethrow(error, "gathering postscript objects at page %d (%d %d R)", page, fz_tonum(pageobj), fz_togen(pageobj)));
}
}
if (show & SHADINGS)
{
shade = fz_dictgets(rsrc, "Shading");
if (shade)
{
error = gathershadings(page, pageobj, shade);
if (error)
die(fz_rethrow(error, "gathering shadings at page %d (%d %d R)", page, fz_tonum(pageobj), fz_togen(pageobj)));
}
}
if (show & PATTERNS)
{
pattern = fz_dictgets(rsrc, "Pattern");
if (pattern)
{
error = gatherpatterns(page, pageobj, pattern);
if (error)
die(fz_rethrow(error, "gathering shadings at page %d (%d %d R)", page, fz_tonum(pageobj), fz_togen(pageobj)));
}
}
}
void pdfapp_showpage(pdfapp_t *app, int loadpage, int drawpage)
{
char buf[256];
fz_error *error;
fz_matrix ctm;
fz_rect bbox;
fz_obj *obj;
if (loadpage)
{
wincursor(app, WAIT);
if (app->page)
pdf_droppage(app->page);
app->page = nil;
obj = pdf_getpageobject(app->pages, app->pageno - 1);
error = pdf_loadpage(&app->page, app->xref, obj);
if (error)
pdfapp_error(app, error);
sprintf(buf, "%s - %d/%d", app->doctitle,
app->pageno, pdf_getpagecount(app->pages));
wintitle(app, buf);
}
if (drawpage)
{
wincursor(app, WAIT);
if (app->image)
fz_droppixmap(app->image);
app->image = nil;
ctm = pdfapp_viewctm(app);
bbox = fz_transformaabb(ctm, app->page->mediabox);
error = fz_rendertree(&app->image, app->rast, app->page->tree,
ctm, fz_roundrect(bbox), 1);
if (error)
pdfapp_error(app, error);
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);
}
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);
}
