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/*
* Copyright (C) 2009-2010, Pino Toscano <pino@kde.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "poppler-page.h"
#include "poppler-page-transition.h"
#include "poppler-document-private.h"
#include "poppler-page-private.h"
#include "poppler-private.h"
#include "TextOutputDev.h"
#include <memory>
using namespace poppler;
page_private::page_private(document_private *_doc, int _index)
: doc(_doc)
, page(doc->doc->getCatalog()->getPage(_index + 1))
, index(_index)
, transition(0)
{
}
page_private::~page_private()
{
delete transition;
}
/**
\class poppler::page poppler-page.h "poppler/cpp/poppler-page.h"
A page in a PDF %document.
*/
/**
\enum poppler::page::orientation_enum
The possible orientation of a page.
*/
/**
\enum poppler::page::search_direction_enum
The direction/action to follow when performing a text search.
*/
/**
\enum poppler::page::text_layout_enum
A layout of the text of a page.
*/
page::page(document_private *doc, int index)
: d(new page_private(doc, index))
{
}
/**
Destructor.
*/
page::~page()
{
delete d;
}
/**
\returns the orientation of the page
*/
page::orientation_enum page::orientation() const
{
const int rotation = d->page->getRotate();
switch (rotation) {
case 90:
return landscape;
break;
case 180:
return upside_down;
break;
case 270:
return seascape;
break;
default:
return portrait;
}
}
/**
The eventual duration the page can be hinted to be shown in a presentation.
If this value is positive (usually different than -1) then a PDF viewer, when
showing the page in a presentation, should show the page for at most for this
number of seconds, and then switch to the next page (if any). Note this is
purely a presentation attribute, it has no influence on the behaviour.
\returns the duration time (in seconds) of the page
*/
double page::duration() const
{
return d->page->getDuration();
}
/**
Returns the size of one rect of the page.
\returns the size of the specified page rect
*/
rectf page::page_rect(page_box_enum box) const
{
PDFRectangle *r = 0;
switch (box) {
case media_box:
r = d->page->getMediaBox();
break;
case crop_box:
r = d->page->getCropBox();
break;
case bleed_box:
r = d->page->getBleedBox();
break;
case trim_box:
r = d->page->getTrimBox();
break;
case art_box:
r = d->page->getArtBox();
break;
}
if (r) {
return detail::pdfrectangle_to_rectf(*r);
}
return rectf();
}
/**
\returns the label of the page, if any
*/
ustring page::label() const
{
GooString goo;
if (!d->doc->doc->getCatalog()->indexToLabel(d->index, &goo)) {
return ustring();
}
return detail::unicode_GooString_to_ustring(&goo);
}
/**
The transition from this page to the next one.
If it is set, then a PDF viewer in a presentation should perform the
specified transition effect when switching from this page to the next one.
\returns the transition effect for the switch to the next page, if any
*/
page_transition* page::transition() const
{
if (!d->transition) {
Object o;
if (d->page->getTrans(&o)->isDict()) {
d->transition = new page_transition(&o);
}
o.free();
}
return d->transition;
}
/**
Search the page for some text.
\param text the text to search
\param[in,out] r the area where to start search, which will be set to the area
of the match (if any)
\param direction in which direction search for text
\param case_sensitivity whether search in a case sensitive way
\param rotation the rotation assumed for the page
*/
bool page::search(const ustring &text, rectf &r, search_direction_enum direction,
case_sensitivity_enum case_sensitivity, rotation_enum rotation) const
{
const size_t len = text.length();
std::vector<Unicode> u(len);
for (size_t i = 0; i < len; ++i) {
u[i] = text[i];
}
const GBool sCase = case_sensitivity == case_sensitive ? gTrue : gFalse;
const int rotation_value = (int)rotation * 90;
bool found = false;
double rect_left = r.left();
double rect_top = r.top();
double rect_right = r.right();
double rect_bottom = r.bottom();
TextOutputDev td(NULL, gTrue, gFalse, gFalse);
d->doc->doc->displayPage(&td, d->index + 1, 72, 72, rotation_value, false, true, false);
TextPage *text_page = td.takeText();
switch (direction) {
case search_from_top:
found = text_page->findText(&u[0], len,
gTrue, gTrue, gFalse, gFalse, sCase, gFalse,
&rect_left, &rect_top, &rect_right, &rect_bottom);
break;
case search_next_result:
found = text_page->findText(&u[0], len,
gFalse, gTrue, gTrue, gFalse, sCase, gFalse,
&rect_left, &rect_top, &rect_right, &rect_bottom);
break;
case search_previous_result:
found = text_page->findText(&u[0], len,
gFalse, gTrue, gTrue, gFalse, sCase, gTrue,
&rect_left, &rect_top, &rect_right, &rect_bottom);
break;
}
text_page->decRefCnt();
r.set_left(rect_left);
r.set_top(rect_top);
r.set_right(rect_right);
r.set_bottom(rect_bottom);
return found;
}
/**
Returns the text in the page, in its physical layout.
\param r if not empty, it will be extracted the text in it; otherwise, the
text of the whole page
\returns the text of the page in the specified rect or in the whole page
*/
ustring page::text(const rectf &r) const
{
return text(r, physical_layout);
}
/**
Returns the text in the page.
\param rect if not empty, it will be extracted the text in it; otherwise, the
text of the whole page
\param layout_mode the layout of the text
\returns the text of the page in the specified rect or in the whole page
\since 0.16
*/
ustring page::text(const rectf &r, text_layout_enum layout_mode) const
{
std::auto_ptr<GooString> s;
const GBool use_raw_order = (layout_mode == raw_order_layout);
TextOutputDev td(0, gFalse, use_raw_order, gFalse);
d->doc->doc->displayPage(&td, d->index + 1, 72, 72, 0, false, true, false);
if (r.is_empty()) {
const PDFRectangle *rect = d->page->getCropBox();
s.reset(td.getText(rect->x1, rect->y1, rect->x2, rect->y2));
} else {
s.reset(td.getText(r.left(), r.top(), r.right(), r.bottom()));
}
return ustring::from_utf8(s->getCString());
}
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