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"
27 class RenderMonitoredPreview;
31 virtual ~RenderBase() {}
33 virtual RenderBase * clone(Inset const *) const = 0;
35 /// compute the size of the object returned in dim.
36 /// \retval true if the metrics has changed.
37 virtual void metrics(MetricsInfo & mi, Dimension & dim) const = 0;
38 /// draw inset and update (xo, yo)-cache
39 virtual void draw(PainterInfo & pi, int x, int y) const = 0;
41 Dimension const & dimension() const { return dim_; };
43 /// render state, exact meaning of state is render-specific
44 void setRenderState(int state) { state_ = state; }
46 int renderState() const { return state_; }
48 /// equivalent to dynamic_cast
49 virtual RenderButton * asButton() { return 0; }
50 virtual RenderGraphic * asGraphic() { return 0; }
51 virtual RenderPreview * asPreview() { return 0; }
52 virtual RenderMonitoredPreview * asMonitoredPreview() { return 0; }
56 RenderBase(RenderBase const &) {}
57 RenderBase & operator=(RenderBase const &) { return *this; }
59 /// render state. currently, render_button uses this to store mouse_hover_
62 mutable Dimension dim_;
68 #endif // NOT RENDERBASE_H