[1f4adec] | 1 | /* |
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| 2 | |
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| 3 | Copyright 2014 Adam Reichold |
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| 4 | |
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| 5 | This file is part of qpdfview. |
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| 6 | |
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| 7 | qpdfview is free software: you can redistribute it and/or modify |
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| 8 | it under the terms of the GNU General Public License as published by |
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| 9 | the Free Software Foundation, either version 2 of the License, or |
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| 10 | (at your option) any later version. |
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| 11 | |
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| 12 | qpdfview is distributed in the hope that it will be useful, |
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| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 15 | GNU General Public License for more details. |
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| 16 | |
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| 17 | You should have received a copy of the GNU General Public License |
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| 18 | along with qpdfview. If not, see <http://www.gnu.org/licenses/>. |
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| 19 | |
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| 20 | */ |
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| 21 | |
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| 22 | #ifndef TILEITEM_H |
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| 23 | #define TILEITEM_H |
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| 24 | |
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| 25 | #include <QCache> |
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| 26 | #include <QObject> |
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| 27 | #include <QPixmap> |
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| 28 | |
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| 29 | #include "global.h" |
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| 30 | |
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| 31 | namespace qpdfview |
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| 32 | { |
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| 33 | |
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| 34 | class Settings; |
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| 35 | class RenderParam; |
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| 36 | class RenderTask; |
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| 37 | class PageItem; |
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| 38 | |
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| 39 | class TileItem : public QObject |
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| 40 | { |
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| 41 | Q_OBJECT |
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| 42 | |
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| 43 | public: |
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| 44 | TileItem(PageItem* page); |
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| 45 | ~TileItem(); |
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| 46 | |
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| 47 | const QRect& rect() const { return m_rect; } |
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| 48 | void setRect(const QRect& rect) { m_rect = rect; } |
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| 49 | |
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| 50 | const QRectF& cropRect() const { return m_cropRect; } |
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| 51 | void resetCropRect() { m_cropRect = QRectF(); } |
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| 52 | void setCropRect(const QRectF& cropRect); |
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| 53 | |
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| 54 | void dropPixmap() { m_pixmap = QPixmap(); } |
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| 55 | void dropObsoletePixmap() { m_obsoletePixmap = QPixmap(); } |
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| 56 | |
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| 57 | static void dropCachedPixmaps(PageItem* page); |
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| 58 | |
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| 59 | bool paint(QPainter* painter, const QPointF& topLeft); |
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| 60 | |
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| 61 | public slots: |
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| 62 | void refresh(bool keepObsoletePixmaps = false); |
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| 63 | |
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| 64 | int startRender(bool prefetch = false); |
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| 65 | void cancelRender(); |
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| 66 | |
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| 67 | void deleteAfterRender(); |
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| 68 | |
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| 69 | protected slots: |
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| 70 | void on_renderTask_finished(); |
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| 71 | void on_renderTask_imageReady(const RenderParam& renderParam, |
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| 72 | const QRect& rect, bool prefetch, |
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| 73 | const QImage& image, const QRectF& cropRect); |
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| 74 | |
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| 75 | private: |
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| 76 | Q_DISABLE_COPY(TileItem) |
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| 77 | |
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| 78 | static Settings* s_settings; |
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| 79 | |
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| 80 | typedef QPair< PageItem*, QByteArray > CacheKey; |
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| 81 | typedef QPair< QPixmap, QRectF > CacheObject; |
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| 82 | |
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| 83 | static QCache< CacheKey, CacheObject > s_cache; |
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| 84 | |
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| 85 | CacheKey cacheKey() const; |
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| 86 | |
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| 87 | PageItem* m_page; |
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| 88 | |
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| 89 | QRect m_rect; |
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| 90 | QRectF m_cropRect; |
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| 91 | |
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| 92 | bool m_pixmapError; |
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| 93 | QPixmap m_pixmap; |
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| 94 | QPixmap m_obsoletePixmap; |
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| 95 | |
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| 96 | QPixmap takePixmap(); |
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| 97 | |
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| 98 | bool m_deleteAfterRender; |
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| 99 | RenderTask* m_renderTask; |
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| 100 | |
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| 101 | }; |
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| 102 | |
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| 103 | } // qpdfview |
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| 104 | |
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| 105 | #endif // PAGEITEM_H |
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