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52 lines
3.1 KiB
C++
52 lines
3.1 KiB
C++
/*******************************************************************************
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* util/imageutil.h *
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* *
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* Copyright (c) 2010 Retroshare Team <retroshare.project@gmail.com> *
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* *
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* This program is free software: you can redistribute it and/or modify *
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* it under the terms of the GNU Affero General Public License as *
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* published by the Free Software Foundation, either version 3 of the *
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* License, or (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU Affero General Public License for more details. *
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* *
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* You should have received a copy of the GNU Affero General Public License *
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* along with this program. If not, see <https://www.gnu.org/licenses/>. *
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* *
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*******************************************************************************/
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#ifndef IMAGEUTIL_H
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#define IMAGEUTIL_H
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#include <QTextCursor>
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#include <qiterator.h>
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class QWidget;
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class QTextEdit;
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class QByteArray;
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class ImageUtil
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{
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public:
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ImageUtil();
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static bool checkImage(const QTextEdit *edit, const QPoint &pos, QRect *cursorRectStartOut = NULL, QRect *cursorRectLeftOut = NULL, QRect *cursorRectRightOut = NULL, QRect *cursorRectEndOut = NULL);
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static bool checkImage(const QTextEdit *edit, const QPoint &pos, QString &imageStr, QRect *cursorRectStartOut = NULL, QRect *cursorRectLeftOut = NULL, QRect *cursorRectRightOut = NULL, QRect *cursorRectEndOut = NULL);
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static void extractImage(QWidget *window, QTextCursor cursor, QString file = "");
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static void copyImage(QWidget *window, QTextCursor cursor);
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static bool saveImage(QWidget *window, const QImage &image, QString file = "");
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static bool optimizeSizeHtml(QString &html, const QImage& original, QImage &optimized, int maxPixels = -1, int maxBytes = -1);
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static bool optimizeSizeBytes(QByteArray &bytearray, const QImage &original, QImage &optimized, const char *format, int maxPixels, int maxBytes);
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static bool hasAlphaContent(const QImage& image);
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private:
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static int checkSize(QByteArray& embeddedImage, const QImage& img, const char *format);
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static void quantization(const QImage& img, QVector<QRgb>& palette);
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static void quantization(QList<QRgb>::iterator begin, QList<QRgb>::iterator end, int depth, QVector<QRgb>& palette);
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static void avgbucket(QList<QRgb>::iterator begin, QList<QRgb>::iterator end, QVector<QRgb>& palette);
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};
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#endif // IMAGEUTIL_H
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