--- /dev/null
+//========================================================================
+//
+// Page.cc
+//
+// Copyright 1996-2003 Glyph & Cog, LLC
+//
+//========================================================================
+
+#include <aconf.h>
+
+#ifdef USE_GCC_PRAGMAS
+#pragma implementation
+#endif
+
+#include <stddef.h>
+#include "GlobalParams.h"
+#include "Object.h"
+#include "Array.h"
+#include "Dict.h"
+#include "XRef.h"
+#include "Link.h"
+#include "OutputDev.h"
+#ifndef PDF_PARSER_ONLY
+#include "Gfx.h"
+#include "GfxState.h"
+#include "Annot.h"
+#endif
+#include "Error.h"
+#include "Page.h"
+
+//------------------------------------------------------------------------
+// PageAttrs
+//------------------------------------------------------------------------
+
+PageAttrs::PageAttrs(PageAttrs *attrs, Dict *dict) {
+ Object obj1;
+
+ // get old/default values
+ if (attrs) {
+ mediaBox = attrs->mediaBox;
+ cropBox = attrs->cropBox;
+ haveCropBox = attrs->haveCropBox;
+ rotate = attrs->rotate;
+ attrs->resources.copy(&resources);
+ } else {
+ // set default MediaBox to 8.5" x 11" -- this shouldn't be necessary
+ // but some (non-compliant) PDF files don't specify a MediaBox
+ mediaBox.x1 = 0;
+ mediaBox.y1 = 0;
+ mediaBox.x2 = 612;
+ mediaBox.y2 = 792;
+ cropBox.x1 = cropBox.y1 = cropBox.x2 = cropBox.y2 = 0;
+ haveCropBox = gFalse;
+ rotate = 0;
+ resources.initNull();
+ }
+
+ // media box
+ readBox(dict, "MediaBox", &mediaBox);
+
+ // crop box
+ if (readBox(dict, "CropBox", &cropBox)) {
+ haveCropBox = gTrue;
+ }
+ if (!haveCropBox) {
+ cropBox = mediaBox;
+ }
+
+ /* if the crop box is larger than the media box, cut it down to
+ media box size */
+ if(haveCropBox &&
+ mediaBox.x1 <= cropBox.x2 &&
+ mediaBox.y1 <= cropBox.y2 &&
+ cropBox.x1 <= mediaBox.x2 &&
+ cropBox.y1 <= mediaBox.y2) {
+ if(mediaBox.x1 >= cropBox.x1) cropBox.x1 = mediaBox.x1;
+ if(mediaBox.y1 >= cropBox.y1) cropBox.y1 = mediaBox.y1;
+ if(mediaBox.x2 <= cropBox.x2) cropBox.x2 = mediaBox.x2;
+ if(mediaBox.y2 <= cropBox.y2) cropBox.y2 = mediaBox.y2;
+ }
+
+ // other boxes
+ bleedBox = cropBox;
+ readBox(dict, "BleedBox", &bleedBox);
+ trimBox = cropBox;
+ readBox(dict, "TrimBox", &trimBox);
+ artBox = cropBox;
+ readBox(dict, "ArtBox", &artBox);
+
+ // rotate
+ dict->lookup("Rotate", &obj1);
+ if (obj1.isInt()) {
+ rotate = obj1.getInt();
+ }
+ obj1.free();
+ while (rotate < 0) {
+ rotate += 360;
+ }
+ while (rotate >= 360) {
+ rotate -= 360;
+ }
+
+ // misc attributes
+ dict->lookup("LastModified", &lastModified);
+ dict->lookup("BoxColorInfo", &boxColorInfo);
+ dict->lookup("Group", &group);
+ dict->lookup("Metadata", &metadata);
+ dict->lookup("PieceInfo", &pieceInfo);
+ dict->lookup("SeparationInfo", &separationInfo);
+
+ // resource dictionary
+ dict->lookup("Resources", &obj1);
+ if (obj1.isDict()) {
+ resources.free();
+ obj1.copy(&resources);
+ }
+ obj1.free();
+}
+
+PageAttrs::~PageAttrs() {
+ lastModified.free();
+ boxColorInfo.free();
+ group.free();
+ metadata.free();
+ pieceInfo.free();
+ separationInfo.free();
+ resources.free();
+}
+
+GBool PageAttrs::readBox(Dict *dict, char *key, PDFRectangle *box) {
+ PDFRectangle tmp;
+ double t;
+ Object obj1, obj2;
+ GBool ok;
+
+ dict->lookup(key, &obj1);
+ if (obj1.isArray() && obj1.arrayGetLength() == 4) {
+ ok = gTrue;
+ obj1.arrayGet(0, &obj2);
+ if (obj2.isNum()) {
+ tmp.x1 = obj2.getNum();
+ } else {
+ ok = gFalse;
+ }
+ obj2.free();
+ obj1.arrayGet(1, &obj2);
+ if (obj2.isNum()) {
+ tmp.y1 = obj2.getNum();
+ } else {
+ ok = gFalse;
+ }
+ obj2.free();
+ obj1.arrayGet(2, &obj2);
+ if (obj2.isNum()) {
+ tmp.x2 = obj2.getNum();
+ } else {
+ ok = gFalse;
+ }
+ obj2.free();
+ obj1.arrayGet(3, &obj2);
+ if (obj2.isNum()) {
+ tmp.y2 = obj2.getNum();
+ } else {
+ ok = gFalse;
+ }
+ obj2.free();
+ if (ok) {
+ if (tmp.x1 > tmp.x2) {
+ t = tmp.x1; tmp.x1 = tmp.x2; tmp.x2 = t;
+ }
+ if (tmp.y1 > tmp.y2) {
+ t = tmp.y1; tmp.y1 = tmp.y2; tmp.y2 = t;
+ }
+ *box = tmp;
+ }
+ } else {
+ ok = gFalse;
+ }
+ obj1.free();
+ return ok;
+}
+
+//------------------------------------------------------------------------
+// Page
+//------------------------------------------------------------------------
+
+Page::Page(XRef *xrefA, int numA, Dict *pageDict, PageAttrs *attrsA) {
+ ok = gTrue;
+ xref = xrefA;
+ num = numA;
+
+ // get attributes
+ attrs = attrsA;
+
+ // annotations
+ pageDict->lookupNF("Annots", &annots);
+ if (!(annots.isRef() || annots.isArray() || annots.isNull())) {
+ error(-1, "Page annotations object (page %d) is wrong type (%s)",
+ num, annots.getTypeName());
+ annots.free();
+ goto err2;
+ }
+
+ // contents
+ pageDict->lookupNF("Contents", &contents);
+ if (!(contents.isRef() || contents.isArray() ||
+ contents.isNull())) {
+ error(-1, "Page contents object (page %d) is wrong type (%s)",
+ num, contents.getTypeName());
+ contents.free();
+ goto err1;
+ }
+
+ return;
+
+ err2:
+ annots.initNull();
+ err1:
+ contents.initNull();
+ ok = gFalse;
+}
+
+Page::~Page() {
+ delete attrs;
+ annots.free();
+ contents.free();
+}
+
+void Page::display(OutputDev *out, double hDPI, double vDPI,
+ int rotate, GBool useMediaBox, GBool crop,
+ Links *links, Catalog *catalog,
+ GBool (*abortCheckCbk)(void *data),
+ void *abortCheckCbkData) {
+ displaySlice(out, hDPI, vDPI, rotate, useMediaBox, crop,
+ -1, -1, -1, -1, links, catalog,
+ abortCheckCbk, abortCheckCbkData);
+}
+
+void Page::displaySlice(OutputDev *out, double hDPI, double vDPI,
+ int rotate, GBool useMediaBox, GBool crop,
+ int sliceX, int sliceY, int sliceW, int sliceH,
+ Links *links, Catalog *catalog,
+ GBool (*abortCheckCbk)(void *data),
+ void *abortCheckCbkData) {
+#ifndef PDF_PARSER_ONLY
+ PDFRectangle *mediaBox, *cropBox, *baseBox;
+ PDFRectangle box;
+ Gfx *gfx;
+ Object obj;
+ Link *link;
+ Annots *annotList;
+ double kx, ky;
+ int i;
+
+ rotate += getRotate();
+ if (rotate >= 360) {
+ rotate -= 360;
+ } else if (rotate < 0) {
+ rotate += 360;
+ }
+
+ mediaBox = getMediaBox();
+ cropBox = getCropBox();
+ if (sliceW >= 0 && sliceH >= 0) {
+ baseBox = useMediaBox ? mediaBox : cropBox;
+ kx = 72.0 / hDPI;
+ ky = 72.0 / vDPI;
+ if (rotate == 90) {
+ if (out->upsideDown()) {
+ box.x1 = baseBox->x1 + ky * sliceY;
+ box.x2 = baseBox->x1 + ky * (sliceY + sliceH);
+ } else {
+ box.x1 = baseBox->x2 - ky * (sliceY + sliceH);
+ box.x2 = baseBox->x2 - ky * sliceY;
+ }
+ box.y1 = baseBox->y1 + kx * sliceX;
+ box.y2 = baseBox->y1 + kx * (sliceX + sliceW);
+ } else if (rotate == 180) {
+ box.x1 = baseBox->x2 - kx * (sliceX + sliceW);
+ box.x2 = baseBox->x2 - kx * sliceX;
+ if (out->upsideDown()) {
+ box.y1 = baseBox->y1 + ky * sliceY;
+ box.y2 = baseBox->y1 + ky * (sliceY + sliceH);
+ } else {
+ box.y1 = baseBox->y2 - ky * (sliceY + sliceH);
+ box.y2 = baseBox->y2 - ky * sliceY;
+ }
+ } else if (rotate == 270) {
+ if (out->upsideDown()) {
+ box.x1 = baseBox->x2 - ky * (sliceY + sliceH);
+ box.x2 = baseBox->x2 - ky * sliceY;
+ } else {
+ box.x1 = baseBox->x1 + ky * sliceY;
+ box.x2 = baseBox->x1 + ky * (sliceY + sliceH);
+ }
+ box.y1 = baseBox->y2 - kx * (sliceX + sliceW);
+ box.y2 = baseBox->y2 - kx * sliceX;
+ } else {
+ box.x1 = baseBox->x1 + kx * sliceX;
+ box.x2 = baseBox->x1 + kx * (sliceX + sliceW);
+ if (out->upsideDown()) {
+ box.y1 = baseBox->y2 - ky * (sliceY + sliceH);
+ box.y2 = baseBox->y2 - ky * sliceY;
+ } else {
+ box.y1 = baseBox->y1 + ky * sliceY;
+ box.y2 = baseBox->y1 + ky * (sliceY + sliceH);
+ }
+ }
+ } else if (useMediaBox) {
+ box = *mediaBox;
+ } else {
+ box = *cropBox;
+ crop = gFalse;
+ }
+
+ if (globalParams->getPrintCommands()) {
+ printf("***** MediaBox = ll:%g,%g ur:%g,%g\n",
+ mediaBox->x1, mediaBox->y1, mediaBox->x2, mediaBox->y2);
+ printf("***** CropBox = ll:%g,%g ur:%g,%g\n",
+ cropBox->x1, cropBox->y1, cropBox->x2, cropBox->y2);
+ printf("***** Rotate = %d\n", attrs->getRotate());
+ }
+
+ gfx = new Gfx(xref, out, num, attrs->getResourceDict(),
+ hDPI, vDPI, &box, crop ? cropBox : (PDFRectangle *)NULL,
+ rotate, abortCheckCbk, abortCheckCbkData);
+ contents.fetch(xref, &obj);
+ if (!obj.isNull()) {
+ gfx->saveState();
+ gfx->display(&obj);
+ gfx->restoreState();
+ }
+ obj.free();
+
+ // draw links
+ if (links) {
+ gfx->saveState();
+ for (i = 0; i < links->getNumLinks(); ++i) {
+ link = links->getLink(i);
+ out->drawLink(link, catalog);
+ }
+ gfx->restoreState();
+ out->dump();
+ }
+
+ // draw non-link annotations
+ annotList = new Annots(xref, catalog, annots.fetch(xref, &obj));
+ obj.free();
+ if (annotList->getNumAnnots() > 0) {
+ if (globalParams->getPrintCommands()) {
+ printf("***** Annotations\n");
+ }
+ for (i = 0; i < annotList->getNumAnnots(); ++i) {
+ annotList->getAnnot(i)->draw(gfx);
+ }
+ out->dump();
+ }
+ delete annotList;
+
+ delete gfx;
+#endif
+}
+
+void Page::getDefaultCTM(double *ctm, double hDPI, double vDPI,
+ int rotate, GBool upsideDown) {
+ GfxState *state;
+ int i;
+
+ rotate += getRotate();
+ if (rotate >= 360) {
+ rotate -= 360;
+ } else if (rotate < 0) {
+ rotate += 360;
+ }
+ state = new GfxState(hDPI, vDPI, getMediaBox(), rotate, upsideDown);
+ for (i = 0; i < 6; ++i) {
+ ctm[i] = state->getCTM()[i];
+ }
+ delete state;
+}
git.asbjorn.biz / swftools.git / blobdiff