4 * This file is part of LyX, the document processor.
5 * Licence details can be found in the file COPYING.
7 * \author Angus Leeming
9 * Full author contact details are available in file CREDITS.
15 #include "dimension.h"
23 class RenderMonitoredPreview;
27 virtual ~RenderBase() {}
29 virtual RenderBase * clone() const = 0;
31 /// compute the size of the object returned in dim
32 virtual void metrics(MetricsInfo & mi, Dimension & dim) const = 0;
33 /// draw inset and update (xo, yo)-cache
34 virtual void draw(PainterInfo & pi, int x, int y) const = 0;
36 /// equivalent to dynamic_cast
37 virtual RenderButton * asButton() { return 0; }
38 virtual RenderGraphic * asGraphic() { return 0; }
39 virtual RenderPreview * asPreview() { return 0; }
40 virtual RenderMonitoredPreview * asMonitoredPreview() { return 0; }
44 RenderBase(RenderBase const &) {}
45 void operator=(RenderBase const &) {}
48 mutable Dimension dim_;
51 #endif // NOT RENDER_BASE_H