poco/PDF/src/Page.cpp

//
// Page.cpp
//
// $Id: //poco/Main/PDF/src/Page.cpp#2 $
//
// Library: PDF
// Package: PDFCore
// Module:  Page
//
// Copyright (c) 2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// Permission is hereby granted, free of charge, to any person or organization
// obtaining a copy of the software and accompanying documentation covered by
// this license (the "Software") to use, reproduce, display, distribute,
// execute, and transmit the Software, and to prepare derivative works of the
// Software, and to permit third-parties to whom the Software is furnished to
// do so, all subject to the following:
// 
// The copyright notices in the Software and this entire statement, including
// the above license grant, this restriction and the following disclaimer,
// must be included in all copies of the Software, in whole or in part, and
// all derivative works of the Software, unless such copies or derivative
// works are solely in the form of machine-executable object code generated by
// a source language processor.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//


#include "Poco/PDF/Page.h"
#include "Poco/PDF/PDFException.h"
#include <limits>


namespace Poco {
namespace PDF {


Page::Page(HPDF_Doc* pPDF,
	const HPDF_Page& page,
	Size pageSize,
	Orientation orientation): 
	_pPDF(pPDF),
	_page(page),
	_size(pageSize),
	_orientation(orientation),
	_pCurrentFont(0)
{
}


Page::Page(const Page& other): 
	_pPDF(other._pPDF),
	_page(other._page),
	_size(other._size),
	_orientation(other._orientation)
{
}


Page::~Page()
{
}


Page& Page::operator = (const Page& page)
{
	Page tmp(page);
	swap(tmp);
	return *this;
}


void Page::swap(Page& other)
{
	using std::swap;
	
	swap(_pPDF, other._pPDF);
	swap(_page, other._page);
	swap(_size, other._size);
	swap(_orientation, other._orientation);
}


void Page::writeOnce(float xPos, float yPos, const std::string& text)
{
	beginText();
	write(xPos, yPos, text);
	endText();
}


int Page::writeOnceInRectangle(float left,
		float top,
		float right,
		float bottom,
		const std::string& text,
		TextAlignment align)
{
	beginText();
	int ret = writeInRectangle(left, top, right, bottom, text, align);
	endText();
	return ret;
}


float Page::textWidth(const std::string& text)
{
	return HPDF_Page_TextWidth(_page, text.c_str());
}


void Page::setRotation(int angle)
{
	if (0 != angle % 90 || angle > std::numeric_limits<HPDF_UINT16>::max())
		throw InvalidArgumentException("Invalid angle value.");

	HPDF_Page_SetRotate(_page, static_cast<HPDF_UINT16>(angle));
}


const Destination& Page::createDestination(const std::string& name)
{
	DestinationContainer::iterator it = _destinations.find(name);
	if (_destinations.end() == it) 
		throw InvalidArgumentException("Destination already exists.");

	Destination dest(_pPDF, HPDF_Page_CreateDestination(_page), name);
	std::pair<DestinationContainer::iterator, bool> ret = 
		_destinations.insert(DestinationContainer::value_type(name, dest));

	if (ret.second) return ret.first->second;

	throw IllegalStateException("Could not create destination.");
}


const TextAnnotation& Page::createTextAnnotation(const std::string& name, 
	const Rectangle& rect,
	const std::string& text,
	const Encoder& encoder)
{
	TextAnnotationContainer::iterator it = _textAnnotations.find(name);
	if (_textAnnotations.end() == it) 
		throw InvalidArgumentException("Annotation already exists.");

	TextAnnotation ann(_pPDF,
		HPDF_Page_CreateTextAnnot(_page, rect, text.c_str(), encoder),
		name);

	std::pair<TextAnnotationContainer::iterator, bool> ret = 
		_textAnnotations.insert(TextAnnotationContainer::value_type(name, ann));

	if (ret.second) return ret.first->second;

	throw IllegalStateException("Could not create annotation.");
}


const LinkAnnotation& Page::createLinkAnnotation(const std::string& name, 
	const Rectangle& rect,
	const Destination& dest)
{
	LinkAnnotationContainer::iterator it = _linkAnnotations.find(name);
	if (_linkAnnotations.end() == it) 
		throw InvalidArgumentException("Annotation already exists.");

	LinkAnnotation ann(_pPDF,
		HPDF_Page_CreateLinkAnnot(_page, rect, dest),
		name);
	std::pair<LinkAnnotationContainer::iterator, bool> ret = 
		_linkAnnotations.insert(LinkAnnotationContainer::value_type(name, ann));

	if (ret.second) return ret.first->second;

	throw IllegalStateException("Could not create annotation.");
}


const LinkAnnotation& Page::createURILinkAnnotation(const std::string& name, 
	const Rectangle& rect,
	const std::string& uri)
{
	LinkAnnotationContainer::iterator it = _linkAnnotations.find(name);
	if (_linkAnnotations.end() == it) 
		throw InvalidArgumentException("Annotation already exists.");

	LinkAnnotation ann(_pPDF,
		HPDF_Page_CreateURILinkAnnot(_page, rect, uri.c_str()),
		name);
	std::pair<LinkAnnotationContainer::iterator, bool> ret = 
		_linkAnnotations.insert(LinkAnnotationContainer::value_type(name, ann));

	if (ret.second) return ret.first->second;

	throw IllegalStateException("Could not create annotation.");
}


} } // namespace Poco::PDF