1 //========================================================================
5 // Copyright 1996-2002 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);
63 haveCropBox = readBox(dict, "CropBox", &cropBox);
65 // if the MediaBox is excessively larger than the CropBox,
66 // just use the CropBox
67 limitToCropBox = gFalse;
69 w = 0.25 * (cropBox.x2 - cropBox.x1);
70 h = 0.25 * (cropBox.y2 - cropBox.y1);
71 if ((cropBox.x1 - mediaBox.x1) + (mediaBox.x2 - cropBox.x2) > w ||
72 (cropBox.y1 - mediaBox.y1) + (mediaBox.y2 - cropBox.y2) > h) {
73 limitToCropBox = gTrue;
79 readBox(dict, "BleedBox", &bleedBox);
81 readBox(dict, "TrimBox", &trimBox);
83 readBox(dict, "ArtBox", &artBox);
86 dict->lookup("Rotate", &obj1);
88 rotate = obj1.getInt();
94 while (rotate >= 360) {
99 dict->lookup("LastModified", &lastModified);
100 dict->lookup("BoxColorInfo", &boxColorInfo);
101 dict->lookup("Group", &group);
102 dict->lookup("Metadata", &metadata);
103 dict->lookup("PieceInfo", &pieceInfo);
104 dict->lookup("SeparationInfo", &separationInfo);
106 // resource dictionary
107 dict->lookup("Resources", &obj1);
110 obj1.copy(&resources);
115 PageAttrs::~PageAttrs() {
121 separationInfo.free();
125 GBool PageAttrs::readBox(Dict *dict, char *key, PDFRectangle *box) {
130 dict->lookup(key, &obj1);
131 if (obj1.isArray() && obj1.arrayGetLength() == 4) {
133 obj1.arrayGet(0, &obj2);
135 tmp.x1 = obj2.getNum();
140 obj1.arrayGet(1, &obj2);
142 tmp.y1 = obj2.getNum();
147 obj1.arrayGet(2, &obj2);
149 tmp.x2 = obj2.getNum();
154 obj1.arrayGet(3, &obj2);
156 tmp.y2 = obj2.getNum();
171 //------------------------------------------------------------------------
173 //------------------------------------------------------------------------
175 Page::Page(XRef *xrefA, int numA, Dict *pageDict, PageAttrs *attrsA) {
184 pageDict->lookupNF("Annots", &annots);
185 if (!(annots.isRef() || annots.isArray() || annots.isNull())) {
186 error(-1, "Page annotations object (page %d) is wrong type (%s)",
187 num, annots.getTypeName());
193 pageDict->lookupNF("Contents", &contents);
194 if (!(contents.isRef() || contents.isArray() ||
195 contents.isNull())) {
196 error(-1, "Page contents object (page %d) is wrong type (%s)",
197 num, contents.getTypeName());
217 void Page::display(OutputDev *out, double dpi, int rotate,
218 Links *links, Catalog *catalog,
219 GBool (*abortCheckCbk)(void *data),
220 void *abortCheckCbkData) {
221 displaySlice(out, dpi, rotate, -1, -1, -1, -1, links, catalog,
222 abortCheckCbk, abortCheckCbkData);
225 void Page::displaySlice(OutputDev *out, double dpi, int rotate,
226 int sliceX, int sliceY, int sliceW, int sliceH,
227 Links *links, Catalog *catalog,
228 GBool (*abortCheckCbk)(void *data),
229 void *abortCheckCbkData) {
230 #ifndef PDF_PARSER_ONLY
231 PDFRectangle *mediaBox, *cropBox;
240 rotate += getRotate();
243 } else if (rotate < 0) {
248 if (sliceW >= 0 && sliceH >= 0) {
251 if (out->upsideDown()) {
252 box.x1 = mediaBox->x1 + k * sliceY;
253 box.x2 = mediaBox->x1 + k * (sliceY + sliceH);
255 box.x1 = mediaBox->x2 - k * (sliceY + sliceH);
256 box.x2 = mediaBox->x2 - k * sliceY;
258 box.y1 = mediaBox->y1 + k * sliceX;
259 box.y2 = mediaBox->y1 + k * (sliceX + sliceW);
260 } else if (rotate == 180) {
261 box.x1 = mediaBox->x2 - k * (sliceX + sliceW);
262 box.x2 = mediaBox->x2 - k * sliceX;
263 if (out->upsideDown()) {
264 box.y1 = mediaBox->y1 + k * sliceY;
265 box.y2 = mediaBox->y1 + k * (sliceY + sliceH);
267 box.y1 = mediaBox->y2 - k * (sliceY + sliceH);
268 box.y2 = mediaBox->y2 - k * sliceY;
270 } else if (rotate == 270) {
271 if (out->upsideDown()) {
272 box.x1 = mediaBox->x2 - k * (sliceY + sliceH);
273 box.x2 = mediaBox->x2 - k * sliceY;
275 box.x1 = mediaBox->x1 + k * sliceY;
276 box.x2 = mediaBox->x1 + k * (sliceY + sliceH);
278 box.y1 = mediaBox->y2 - k * (sliceX + sliceW);
279 box.y2 = mediaBox->y2 - k * sliceX;
281 box.x1 = mediaBox->x1 + k * sliceX;
282 box.x2 = mediaBox->x1 + k * (sliceX + sliceW);
283 if (out->upsideDown()) {
284 box.y1 = mediaBox->y2 - k * (sliceY + sliceH);
285 box.y2 = mediaBox->y2 - k * sliceY;
287 box.y1 = mediaBox->y1 + k * sliceY;
288 box.y2 = mediaBox->y1 + k * (sliceY + sliceH);
294 cropBox = getCropBox();
296 if (globalParams->getPrintCommands()) {
297 printf("***** MediaBox = ll:%g,%g ur:%g,%g\n",
298 box.x1, box.y1, box.x2, box.y2);
300 printf("***** CropBox = ll:%g,%g ur:%g,%g\n",
301 cropBox->x1, cropBox->y1, cropBox->x2, cropBox->y2);
303 printf("***** Rotate = %d\n", attrs->getRotate());
306 gfx = new Gfx(xref, out, num, attrs->getResourceDict(),
307 dpi, &box, isCropped(), cropBox, rotate,
308 abortCheckCbk, abortCheckCbkData);
309 contents.fetch(xref, &obj);
317 for (i = 0; i < links->getNumLinks(); ++i) {
318 link = links->getLink(i);
319 out->drawLink(link, catalog);
324 // draw non-link annotations
325 //~ need to reset CTM ???
326 annotList = new Annots(xref, annots.fetch(xref, &obj));
328 if (annotList->getNumAnnots() > 0) {
329 if (globalParams->getPrintCommands()) {
330 printf("***** Annotations\n");
332 for (i = 0; i < annotList->getNumAnnots(); ++i) {
333 annotList->getAnnot(i)->draw(gfx);