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-rw-r--r--plug-ins/lighting/lighting-preview.h38
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diff --git a/plug-ins/lighting/lighting-preview.h b/plug-ins/lighting/lighting-preview.h
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+/* Lighting Effects - A plug-in for GIMP
+ *
+ * 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 3 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, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef __LIGHTING_PREVIEW_H__
+#define __LIGHTING_PREVIEW_H__
+
+#define PREVIEW_WIDTH 200
+#define PREVIEW_HEIGHT 200
+
+/* Externally visible variables */
+
+extern gdouble *xpostab, *ypostab;
+
+/* Externally visible functions */
+
+void preview_compute (void);
+void interactive_preview_callback (GtkWidget *widget);
+gboolean preview_events (GtkWidget *area,
+ GdkEvent *event);
+gboolean preview_expose (GtkWidget *area,
+ GdkEventExpose *eevent);
+void update_light (gint xpos,
+ gint ypos);
+
+#endif /* __LIGHTING_PREVIEW_H__ */