mirror of https://github.com/qpdf/qpdf.git
101 lines
3.3 KiB
C++
101 lines
3.3 KiB
C++
// Copyright (c) 2005-2018 Jay Berkenbilt
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//
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// This file is part of qpdf.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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// Versions of qpdf prior to version 7 were released under the terms
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// of version 2.0 of the Artistic License. At your option, you may
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// continue to consider qpdf to be licensed under those terms. Please
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// see the manual for additional information.
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#ifndef QPDFPAGEDOCUMENTHELPER_HH
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#define QPDFPAGEDOCUMENTHELPER_HH
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#include <qpdf/QPDFDocumentHelper.hh>
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#include <qpdf/QPDFPageObjectHelper.hh>
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#include <qpdf/DLL.h>
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#include <vector>
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#include <qpdf/QPDF.hh>
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class QPDFPageDocumentHelper: public QPDFDocumentHelper
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{
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public:
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QPDF_DLL
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QPDFPageDocumentHelper(QPDF&);
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// Traverse page tree, and return all /Page objects wrapped in
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// QPDFPageObjectHelper objects. Unlike with
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// QPDFObjectHandle::getAllPages, the vector of pages returned by
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// this call is not affected by additions or removals of pages. If
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// you manipulate pages, you will have to call this again to get a
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// new copy. Please comments in QPDFObjectHandle.hh for
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// getAllPages() for additional details.
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QPDF_DLL
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std::vector<QPDFPageObjectHelper> getAllPages();
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// The PDF /Pages tree allows inherited values. Working with the
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// pages of a pdf is much easier when the inheritance is resolved
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// by explicitly setting the values in each /Page.
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QPDF_DLL
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void pushInheritedAttributesToPage();
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// This calls QPDFPageObjectHelper::removeUnreferencedResources
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// for every page in the document. See comments in
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// QPDFPageObjectHelper.hh for details.
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QPDF_DLL
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void removeUnreferencedResources();
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// Add new page at the beginning or the end of the current pdf.
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// The newpage parameter may be either a direct object, an
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// indirect object from this QPDF, or an indirect object from
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// another QPDF. If it is a direct object, it will be made
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// indirect. If it is an indirect object from another QPDF, this
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// method will call pushInheritedAttributesToPage on the other
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// file and then copy the page to this QPDF using the same
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// underlying code as copyForeignObject.
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QPDF_DLL
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void addPage(QPDFPageObjectHelper newpage, bool first);
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// Add new page before or after refpage. See comments for addPage
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// for details about what newpage should be.
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QPDF_DLL
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void addPageAt(QPDFPageObjectHelper newpage, bool before,
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QPDFPageObjectHelper refpage);
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// Remove page from the pdf.
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QPDF_DLL
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void removePage(QPDFPageObjectHelper page);
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private:
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class Members
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{
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friend class QPDFPageDocumentHelper;
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public:
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QPDF_DLL
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~Members();
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private:
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Members();
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Members(Members const&);
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};
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PointerHolder<Members> m;
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};
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#endif // QPDFPAGEDOCUMENTHELPER_HH
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