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72 lines
2.3 KiB
72 lines
2.3 KiB
/*
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* This file is part of the KDE project
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*
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* Copyright (c) Michael Thaler <michael.thaler@physik.tu-muenchen.de>
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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 General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifndef _KIS_DROPSHADOW_H_
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#define _KIS_DROPSHADOW_H_
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#include <kis_progress_subject.h>
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#include <kis_paint_device.h>
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typedef enum
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{
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BLUR_IIR,
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BLUR_RLE
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} BlurMethod;
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class QColor;
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class KisView;
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class KisProgressDisplayInterface;
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class KisDropshadow : public KisProgressSubject {
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Q_OBJECT
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public:
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KisDropshadow(KisView * view);
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virtual ~KisDropshadow() {};
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void dropshadow(KisProgressDisplayInterface * progress, Q_INT32 xoffset, Q_INT32 yoffset, Q_INT32 blurradius, QColor color, Q_UINT8 opacity, bool allowResize);
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public: // Implement KisProgressSubject
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virtual void cancel() { m_cancelRequested = true; }
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private:
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void gaussianblur (KisPaintDeviceSP src, KisPaintDeviceSP dst,
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QRect& rect, double horz, double vert,
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BlurMethod method,
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KisProgressDisplayInterface * progressDisplay);
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//gaussian blur helper functions
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void find_constants(double n_p[], double n_m[], double d_p[], double d_m[], double bd_p[], double bd_m[], double std_dev);
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void transfer_pixels(double *src1, double *src2, Q_UINT8 *dest, Q_INT32 bytes, Q_INT32 width);
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Q_INT32* make_curve(double sigma, Q_INT32 *length);
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void run_length_encode (Q_UINT8 *src, Q_INT32 *dest, Q_INT32 bytes, Q_INT32 width);
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void multiply_alpha (Q_UINT8 *buf, Q_INT32 width, Q_INT32 bytes);
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void separate_alpha (Q_UINT8 *buf, Q_INT32 width, Q_INT32 bytes);
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private:
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KisView * m_view;
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bool m_cancelRequested;
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};
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#endif
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