1 files changed, 69 insertions, 0 deletions
diff --git a/source/blender/editors/include/UI_view2d.h b/source/blender/editors/include/UI_view2d.h
new file mode 100644
index 00000000000..481d96952e9
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+++ b/source/blender/editors/include/UI_view2d.h
@@ -0,0 +1,69 @@
+/**
+ * $Id$
+ *
+ * ***** BEGIN GPL LICENSE BLOCK *****
+ *
+ * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ * The Original Code is Copyright (C) 2008 Blender Foundation.
+ * All rights reserved.
+ *
+ * 
+ * Contributor(s): Blender Foundation
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+#ifndef UI_VIEW2D_H
+#define UI_VIEW2D_H
+
+/* start of a generic 2d view with should allow drawing grids,
+ * panning, zooming, scrolling, .. */
+
+#define V2D_UNIT_SECONDS	0
+#define V2D_UNIT_FRAMES		1
+
+#define V2D_GRID_CLAMP		0
+#define V2D_GRID_NOCLAMP	1
+
+#define V2D_IS_CLIPPED	12000
+
+#define V2D_HORIZONTAL_LINES	1
+#define V2D_VERTICAL_LINES		2
+#define V2D_HORIZONTAL_AXIS		4
+#define V2D_VERTICAL_AXIS		8
+
+struct View2D;
+struct View2DGrid;
+struct bContext;
+
+typedef struct View2DGrid View2DGrid;
+
+/* setup */
+void UI_view2d_ortho(const struct bContext *C, struct View2D *v2d);
+void UI_view2d_update_size(struct View2D *v2d, int winx, int winy);
+
+/* grid drawing */
+View2DGrid *UI_view2d_calc_grid(const struct bContext *C, struct View2D *v2d, int unit, int type, int winx, int winy);
+void UI_view2d_draw_grid(const struct bContext *C, struct View2D *v2d, View2DGrid *grid, int flag);
+void UI_view2d_free_grid(View2DGrid *grid);
+
+/* coordinate conversion */
+void UI_view2d_region_to_view(struct View2D *v2d, short x, short y, float *viewx, float *viewy);
+void UI_view2d_view_to_region(struct View2D *v2d, float x, float y, short *regionx, short *regiony);
+void UI_view2d_to_region_no_clip(struct View2D *v2d, float x, float y, short *regionx, short *region_y);
+
+#endif /* UI_VIEW2D_H */
+