1 files changed, 51 insertions, 0 deletions
diff --git a/src/display/canvas-rotate.h b/src/display/canvas-rotate.h
new file mode 100644
index 0000000..b45eae2
--- /dev/null
+++ b/src/display/canvas-rotate.h
@@ -0,0 +1,51 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+#ifndef SEEN_SP_CANVAS_ROTATE_H
+#define SEEN_SP_CANVAS_ROTATE_H
+
+/*
+ * Temporary surface for previewing rotated canvas.
+ *
+ * Author:
+ *   Tavmjong Bah <tavmjong@free.fr>
+ *
+ * Copyright (C) 2017 Tavmjong Bah
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include "sp-canvas-item.h"
+#include "2geom/line.h"
+
+class SPItem;
+
+#define SP_TYPE_CANVAS_ROTATE (sp_canvas_rotate_get_type ())
+#define SP_CANVAS_ROTATE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), SP_TYPE_CANVAS_ROTATE, SPCanvasRotate))
+#define SP_IS_CANVAS_ROTATE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), SP_TYPE_CANVAS_ROTATE))
+
+struct SPCanvasRotate : public SPCanvasItem {
+    Geom::Point center; // Center of screen
+    Geom::Point cursor; // Position of cursor relative to center (after angle snapping)
+    double angle;       // Rotation angle in degrees
+    double start_angle; // Starting angle of cursor
+    cairo_surface_t *surface_copy; // Copy of original surface
+    cairo_surface_t *surface_rotated; // Copy of original surface, rotated
+};
+
+void sp_canvas_rotate_start( SPCanvasRotate *canvas_rotate, cairo_surface_t *background );
+
+GType sp_canvas_rotate_get_type ();
+
+struct SPCanvasRotateClass : public SPCanvasItemClass{};
+
+#endif // SEEN_SP_CANVAS_ROTATE_H
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :