1 files changed, 71 insertions, 0 deletions
diff --git a/krita/plugins/viewplugins/dropshadow/kis_dropshadow.h b/krita/plugins/viewplugins/dropshadow/kis_dropshadow.h
new file mode 100644
index 000000000..3aca424fe
--- /dev/null
+++ b/krita/plugins/viewplugins/dropshadow/kis_dropshadow.h
@@ -0,0 +1,71 @@
+/*
+ * This file is part of the KDE project
+ *
+ * Copyright (c) Michael Thaler <michael.thaler@physik.tu-muenchen.de>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#ifndef _KIS_DROPSHADOW_H_
+#define _KIS_DROPSHADOW_H_
+
+#include <kis_progress_subject.h>
+#include <kis_paint_device.h>
+
+typedef enum
+{
+  BLUR_IIR,
+  BLUR_RLE
+} BlurMethod;
+
+
+class QColor;
+class KisView;
+class KisProgressDisplayInterface;
+
+class KisDropshadow : public KisProgressSubject {
+
+    Q_OBJECT
+
+public:
+
+    KisDropshadow(KisView * view);
+    virtual ~KisDropshadow() {};
+
+    void dropshadow(KisProgressDisplayInterface * progress, Q_INT32 xoffset, Q_INT32 yoffset, Q_INT32 blurradius, QColor color, Q_UINT8 opacity, bool allowResize);
+
+public: // Implement KisProgressSubject
+        virtual void cancel() { m_cancelRequested = true; }
+
+private:
+    void gaussianblur (KisPaintDeviceSP src, KisPaintDeviceSP dst,
+                       QRect& rect, double horz, double vert,
+                       BlurMethod method,
+                       KisProgressDisplayInterface * progressDisplay);
+    //gaussian blur helper functions
+    void find_constants(double n_p[], double n_m[], double d_p[], double d_m[], double bd_p[], double bd_m[], double  std_dev);
+    void transfer_pixels(double *src1, double *src2, Q_UINT8  *dest, Q_INT32 bytes, Q_INT32 width);
+    Q_INT32* make_curve(double sigma, Q_INT32 *length);
+    void run_length_encode (Q_UINT8 *src, Q_INT32 *dest, Q_INT32 bytes, Q_INT32 width);
+    void multiply_alpha (Q_UINT8 *buf, Q_INT32 width, Q_INT32 bytes);
+    void separate_alpha (Q_UINT8 *buf, Q_INT32 width, Q_INT32 bytes);
+
+private:
+    KisView * m_view;
+    bool m_cancelRequested;
+
+};
+
+#endif