A tableau which renders its children into sub-rectangles of its viewport. More...

#include <vgui_poly_tableau.h>

Public Member Functions
	vgui_poly_tableau_vp_sc_snapshot ()
	~vgui_poly_tableau_vp_sc_snapshot ()
Public Attributes
GLint	vp [4]
GLint	sc [4]
bool	sc_was_enabled

Detailed Description

A tableau which renders its children into sub-rectangles of its viewport.

Class poly_tableau is a tableau which renders its children into sub-rectangles of its given viewport. The subrectangles are given as relative coordinates on [0,1]x[0,1], with (0,0) being the lower left corner and (1,1) the upper right corner.

vgui_poly_tableau has a concept of which child is 'current', meaning roughly which child is getting the mouse events. It automatically switches current child, according to where the pointer is, in a sensible way.

vgui_poly_tableau can be used to emulate two adaptors side by side.

Implementation notes: Many methods take an argument "GLint const vp[4]", which is the viewport (in the format returned by OpenGL) as it was when the last event reached the tableau. For example, it is not possible to switch 'current' child without knowing the viewport, because a LEAVE/ENTER pair have to be sent to the old and new child and the viewport must be set correctly before dispatching these events. Viewport helper class. The constructor takes a snapshot of the current viewport and scissor areas. The destructor restores that state.

Definition at line 50 of file vgui_poly_tableau.h.