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); }
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); }