1 //========================================================================
5 // Copyright 1996-2003 Glyph & Cog, LLC
7 //========================================================================
11 #ifdef USE_GCC_PRAGMAS
12 #pragma implementation
16 #include "GlobalParams.h"
22 #include "OutputDev.h"
23 #ifndef PDF_PARSER_ONLY
30 //------------------------------------------------------------------------
32 //------------------------------------------------------------------------
34 PageAttrs::PageAttrs(PageAttrs *attrs, Dict *dict) {
38 // get old/default values
40 mediaBox = attrs->mediaBox;
41 cropBox = attrs->cropBox;
42 haveCropBox = attrs->haveCropBox;
43 rotate = attrs->rotate;
44 attrs->resources.copy(&resources);
46 // set default MediaBox to 8.5" x 11" -- this shouldn't be necessary
47 // but some (non-compliant) PDF files don't specify a MediaBox
52 cropBox.x1 = cropBox.y1 = cropBox.x2 = cropBox.y2 = 0;
59 readBox(dict, "MediaBox", &mediaBox);
62 if (readBox(dict, "CropBox", &cropBox)) {
69 // if the MediaBox is excessively larger than the CropBox,
70 // just use the CropBox
71 limitToCropBox = gFalse;
73 w = 0.25 * (cropBox.x2 - cropBox.x1);
74 h = 0.25 * (cropBox.y2 - cropBox.y1);
75 if ((cropBox.x1 - mediaBox.x1) + (mediaBox.x2 - cropBox.x2) > w ||
76 (cropBox.y1 - mediaBox.y1) + (mediaBox.y2 - cropBox.y2) > h) {
77 limitToCropBox = gTrue;
83 readBox(dict, "BleedBox", &bleedBox);
85 readBox(dict, "TrimBox", &trimBox);
87 readBox(dict, "ArtBox", &artBox);
90 dict->lookup("Rotate", &obj1);
92 rotate = obj1.getInt();
98 while (rotate >= 360) {
103 dict->lookup("LastModified", &lastModified);
104 dict->lookup("BoxColorInfo", &boxColorInfo);
105 dict->lookup("Group", &group);
106 dict->lookup("Metadata", &metadata);
107 dict->lookup("PieceInfo", &pieceInfo);
108 dict->lookup("SeparationInfo", &separationInfo);
110 // resource dictionary
111 dict->lookup("Resources", &obj1);
114 obj1.copy(&resources);
119 PageAttrs::~PageAttrs() {
125 separationInfo.free();
129 GBool PageAttrs::readBox(Dict *dict, char *key, PDFRectangle *box) {
134 dict->lookup(key, &obj1);
135 if (obj1.isArray() && obj1.arrayGetLength() == 4) {
137 obj1.arrayGet(0, &obj2);
139 tmp.x1 = obj2.getNum();
144 obj1.arrayGet(1, &obj2);
146 tmp.y1 = obj2.getNum();
151 obj1.arrayGet(2, &obj2);
153 tmp.x2 = obj2.getNum();
158 obj1.arrayGet(3, &obj2);
160 tmp.y2 = obj2.getNum();
175 //------------------------------------------------------------------------
177 //------------------------------------------------------------------------
179 Page::Page(XRef *xrefA, int numA, Dict *pageDict, PageAttrs *attrsA) {
188 pageDict->lookupNF("Annots", &annots);
189 if (!(annots.isRef() || annots.isArray() || annots.isNull())) {
190 error(-1, "Page annotations object (page %d) is wrong type (%s)",
191 num, annots.getTypeName());
197 pageDict->lookupNF("Contents", &contents);
198 if (!(contents.isRef() || contents.isArray() ||
199 contents.isNull())) {
200 error(-1, "Page contents object (page %d) is wrong type (%s)",
201 num, contents.getTypeName());
221 void Page::display(OutputDev *out, double hDPI, double vDPI,
222 int rotate, GBool crop,
223 Links *links, Catalog *catalog,
224 GBool (*abortCheckCbk)(void *data),
225 void *abortCheckCbkData) {
226 displaySlice(out, hDPI, vDPI, rotate, crop, -1, -1, -1, -1, links, catalog,
227 abortCheckCbk, abortCheckCbkData);
230 void Page::displaySlice(OutputDev *out, double hDPI, double vDPI,
231 int rotate, GBool crop,
232 int sliceX, int sliceY, int sliceW, int sliceH,
233 Links *links, Catalog *catalog,
234 GBool (*abortCheckCbk)(void *data),
235 void *abortCheckCbkData) {
236 #ifndef PDF_PARSER_ONLY
237 PDFRectangle *mediaBox, *cropBox;
246 rotate += getRotate();
249 } else if (rotate < 0) {
254 if (sliceW >= 0 && sliceH >= 0) {
258 if (out->upsideDown()) {
259 box.x1 = mediaBox->x1 + ky * sliceY;
260 box.x2 = mediaBox->x1 + ky * (sliceY + sliceH);
262 box.x1 = mediaBox->x2 - ky * (sliceY + sliceH);
263 box.x2 = mediaBox->x2 - ky * sliceY;
265 box.y1 = mediaBox->y1 + kx * sliceX;
266 box.y2 = mediaBox->y1 + kx * (sliceX + sliceW);
267 } else if (rotate == 180) {
268 box.x1 = mediaBox->x2 - kx * (sliceX + sliceW);
269 box.x2 = mediaBox->x2 - kx * sliceX;
270 if (out->upsideDown()) {
271 box.y1 = mediaBox->y1 + ky * sliceY;
272 box.y2 = mediaBox->y1 + ky * (sliceY + sliceH);
274 box.y1 = mediaBox->y2 - ky * (sliceY + sliceH);
275 box.y2 = mediaBox->y2 - ky * sliceY;
277 } else if (rotate == 270) {
278 if (out->upsideDown()) {
279 box.x1 = mediaBox->x2 - ky * (sliceY + sliceH);
280 box.x2 = mediaBox->x2 - ky * sliceY;
282 box.x1 = mediaBox->x1 + ky * sliceY;
283 box.x2 = mediaBox->x1 + ky * (sliceY + sliceH);
285 box.y1 = mediaBox->y2 - kx * (sliceX + sliceW);
286 box.y2 = mediaBox->y2 - kx * sliceX;
288 box.x1 = mediaBox->x1 + kx * sliceX;
289 box.x2 = mediaBox->x1 + kx * (sliceX + sliceW);
290 if (out->upsideDown()) {
291 box.y1 = mediaBox->y2 - ky * (sliceY + sliceH);
292 box.y2 = mediaBox->y2 - ky * sliceY;
294 box.y1 = mediaBox->y1 + ky * sliceY;
295 box.y2 = mediaBox->y1 + ky * (sliceY + sliceH);
301 cropBox = getCropBox();
303 if (globalParams->getPrintCommands()) {
304 printf("***** MediaBox = ll:%g,%g ur:%g,%g\n",
305 box.x1, box.y1, box.x2, box.y2);
307 printf("***** CropBox = ll:%g,%g ur:%g,%g\n",
308 cropBox->x1, cropBox->y1, cropBox->x2, cropBox->y2);
310 printf("***** Rotate = %d\n", attrs->getRotate());
313 gfx = new Gfx(xref, out, num, attrs->getResourceDict(),
314 hDPI, vDPI, &box, crop && isCropped(), cropBox, rotate,
315 abortCheckCbk, abortCheckCbkData);
316 contents.fetch(xref, &obj);
327 for (i = 0; i < links->getNumLinks(); ++i) {
328 link = links->getLink(i);
329 out->drawLink(link, catalog);
335 // draw non-link annotations
336 annotList = new Annots(xref, annots.fetch(xref, &obj));
338 if (annotList->getNumAnnots() > 0) {
339 if (globalParams->getPrintCommands()) {
340 printf("***** Annotations\n");
342 for (i = 0; i < annotList->getNumAnnots(); ++i) {
343 annotList->getAnnot(i)->draw(gfx);