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+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * 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 __GIMP_DISPLAY_XFER_H__
+#define __GIMP_DISPLAY_XFER_H__
+
+
+extern gint GIMP_DISPLAY_RENDER_BUF_WIDTH;
+extern gint GIMP_DISPLAY_RENDER_BUF_HEIGHT;
+
+#define GIMP_DISPLAY_RENDER_MAX_SCALE 4.0
+
+
+GimpDisplayXfer * gimp_display_xfer_realize (GtkWidget *widget);
+
+cairo_surface_t * gimp_display_xfer_get_surface (GimpDisplayXfer *xfer,
+ gint w,
+ gint h,
+ gint *src_x,
+ gint *src_y);
+
+
+#endif /* __GIMP_DISPLAY_XFER_H__ */