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//========================================================================
//
// Page.cc
//
// Copyright 1996 Derek B. Noonburg
//
//========================================================================
#ifdef __GNUC__
#pragma implementation
#endif
#include <stddef.h>
#include "Object.h"
#include "Array.h"
#include "Dict.h"
#include "XRef.h"
#include "OutputDev.h"
#ifndef PDF_PARSER_ONLY
#include "Gfx.h"
#endif
#include "Error.h"
#include "Params.h"
#include "Page.h"
//------------------------------------------------------------------------
// PageAttrs
//------------------------------------------------------------------------
PageAttrs::PageAttrs(PageAttrs *attrs, Dict *dict) {
Object obj1, obj2;
double w, h;
// get old/default values
if (attrs) {
x1 = attrs->x1;
y1 = attrs->y1;
x2 = attrs->x2;
y2 = attrs->y2;
cropX1 = attrs->cropX1;
cropY1 = attrs->cropY1;
cropX2 = attrs->cropX2;
cropY2 = attrs->cropY2;
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
x1 = 0;
y1 = 0;
x2 = 612;
y2 = 792;
cropX1 = cropY1 = cropX2 = cropY2 = 0;
rotate = 0;
resources.initNull();
}
// media box
dict->lookup("MediaBox", &obj1);
if (obj1.isArray() && obj1.arrayGetLength() == 4) {
obj1.arrayGet(0, &obj2);
if (obj2.isNum())
x1 = obj2.getNum();
obj2.free();
obj1.arrayGet(1, &obj2);
if (obj2.isNum())
y1 = obj2.getNum();
obj2.free();
obj1.arrayGet(2, &obj2);
if (obj2.isNum())
x2 = obj2.getNum();
obj2.free();
obj1.arrayGet(3, &obj2);
if (obj2.isNum())
y2 = obj2.getNum();
obj2.free();
}
obj1.free();
// crop box
dict->lookup("CropBox", &obj1);
if (obj1.isArray() && obj1.arrayGetLength() == 4) {
obj1.arrayGet(0, &obj2);
if (obj2.isNum())
cropX1 = obj2.getNum();
obj2.free();
obj1.arrayGet(1, &obj2);
if (obj2.isNum())
cropY1 = obj2.getNum();
obj2.free();
obj1.arrayGet(2, &obj2);
if (obj2.isNum())
cropX2 = obj2.getNum();
obj2.free();
obj1.arrayGet(3, &obj2);
if (obj2.isNum())
cropY2 = obj2.getNum();
obj2.free();
}
obj1.free();
// if the MediaBox is excessively larger than the CropBox,
// just use the CropBox
limitToCropBox = gFalse;
w = 0.25 * (cropX2 - cropX1);
h = 0.25 * (cropY2 - cropY1);
if (cropX2 > cropX1 &&
(cropX1 - x1 > w || x2 - cropX2 > w ||
cropY1 - y1 > h || y2 - cropY2 > h)) {
limitToCropBox = gTrue;
}
// rotate
dict->lookup("Rotate", &obj1);
if (obj1.isInt())
rotate = obj1.getInt();
obj1.free();
while (rotate < 0)
rotate += 360;
while (rotate >= 360)
rotate -= 360;
// resource dictionary
dict->lookup("Resources", &obj1);
if (obj1.isDict()) {
resources.free();
obj1.copy(&resources);
}
obj1.free();
}
PageAttrs::~PageAttrs() {
resources.free();
}
//------------------------------------------------------------------------
// Page
//------------------------------------------------------------------------
Page::Page(int num1, Dict *pageDict, PageAttrs *attrs1) {
ok = gTrue;
num = num1;
// get attributes
attrs = attrs1;
// 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, int dpi, int rotate) {
#ifndef PDF_PARSER_ONLY
Gfx *gfx;
Object obj;
if (printCommands) {
printf("***** MediaBox = ll:%g,%g ur:%g,%g\n",
getX1(), getY1(), getX2(), getY2());
if (isCropped()) {
printf("***** CropBox = ll:%g,%g ur:%g,%g\n",
getCropX1(), getCropY1(), getCropX2(), getCropY2());
}
printf("***** Rotate = %d\n", attrs->getRotate());
}
rotate += getRotate();
if (rotate >= 360)
rotate -= 360;
else if (rotate < 0)
rotate += 360;
gfx = new Gfx(out, num, attrs->getResourceDict(),
dpi, getX1(), getY1(), getX2(), getY2(), isCropped(),
getCropX1(), getCropY1(), getCropX2(), getCropY2(), rotate);
contents.fetch(&obj);
if (!obj.isNull())
gfx->display(&obj);
obj.free();
delete gfx;
#endif
}
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