+++ /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;
- }
-
- // 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