| 1 | /* |
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| 2 | * Copyright (C) 2008, Pino Toscano <pino@kde.org> |
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| 3 | * Copyright (C) 2018, Albert Astals Cid <aacid@kde.org> |
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| 4 | * |
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| 5 | * This program is free software; you can redistribute it and/or modify |
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| 6 | * it under the terms of the GNU General Public License as published by |
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| 7 | * the Free Software Foundation; either version 2, or (at your option) |
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| 8 | * any later version. |
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| 9 | * |
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| 10 | * This program is distributed in the hope that it will be useful, |
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| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 13 | * GNU General Public License for more details. |
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| 14 | * |
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| 15 | * You should have received a copy of the GNU General Public License |
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| 16 | * along with this program; if not, write to the Free Software |
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| 17 | * Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. |
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| 18 | */ |
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| 19 | |
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| 20 | #ifndef DOCUMENTOBSERVER_H |
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| 21 | #define DOCUMENTOBSERVER_H |
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| 22 | |
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| 23 | class PdfViewer; |
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| 24 | namespace Poppler { |
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| 25 | class Document; |
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| 26 | } |
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| 27 | |
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| 28 | class DocumentObserver |
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| 29 | { |
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| 30 | friend class PdfViewer; |
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| 31 | |
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| 32 | public: |
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| 33 | virtual ~DocumentObserver(); |
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| 34 | DocumentObserver(const DocumentObserver &) = delete; |
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| 35 | DocumentObserver &operator=(const DocumentObserver &) = delete; |
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| 36 | |
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| 37 | virtual void documentLoaded() = 0; |
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| 38 | virtual void documentClosed() = 0; |
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| 39 | virtual void pageChanged(int page) = 0; |
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| 40 | |
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| 41 | protected: |
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| 42 | DocumentObserver(); |
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| 43 | |
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| 44 | Poppler::Document *document() const; |
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| 45 | void setPage(int page); |
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| 46 | int page() const; |
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| 47 | void reloadPage(); |
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| 48 | |
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| 49 | private: |
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| 50 | PdfViewer *m_viewer; |
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| 51 | }; |
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| 52 | |
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| 53 | #endif |
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| 54 | |
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