Unix/Linux Go Back    


CentOS 7.0 - man page for xkbcomputeshapebounds (centos section 3)

Linux & Unix Commands - Search Man Pages
Man Page or Keyword Search:   man
Select Man Page Set:       apropos Keyword Search (sections above)


XkbComputeShapeBounds(3)		  XKB FUNCTIONS 		 XkbComputeShapeBounds(3)

NAME
       XkbComputeShapeBounds - Updates the bounding box of a shape

SYNOPSIS
       Bool XkbComputeShapeBounds (XkbShapePtr shape);

ARGUMENTS
       - shape
	      shape to be examined

DESCRIPTION
       Xkb  provides  a  number  of  convenience functions to help use a keyboard geometry. These
       include functions to return the bounding box of a shape's top surface and  to  update  the
       bounding box of a shape row or section.

       A  shape is made up of a number of outlines. Each outline is a polygon made up of a number
       of points. The bounding box of a shape is a rectangle that contains all	the  outlines  of
       that shape.

       A  ShapeRec  contains  a  BoundsRec  that describes the bounds of the shape. If you add or
       delete an outline to or from a shape, the bounding box must be updated.

       XkbComputeShapeBounds updates the BoundsRec contained in the shape by  examining  all  the
       outlines  of the shape and setting the BoundsRec to the minimum x and minimum y, and maxi-
       mum x and maximum y values found in those outlines.  XkbComputeShapeBounds  returns  False
       if shape is NULL or if there are no outlines for the shape; otherwise, it returns True.

       If you add or delete a key to or from a row, or if you update the shape of one of the keys
       in that row, you may need to update the bounding box of that row. To update  the  bounding
       box of a row, use XkbComputeRowBounds.

STRUCTURES
       typedef struct _XkbShape {
	   Atom 	  name; 	/* shape's name */
	   unsigned short num_outlines; /* number of outlines for the shape */
	   unsigned short sz_outlines;	/* size of the outlines array */
	   XkbOutlinePtr  outlines;	/* array of outlines for the shape */
	   XkbOutlinePtr  approx;	/* pointer into the array to the approximating outline */
	   XkbOutlinePtr  primary;	/* pointer into the array to the primary outline */
	   XkbBoundsRec   bounds;	/* bounding box for the shape; encompasses all outlines */
       } XkbShapeRec, *XkbShapePtr;

       typedef struct _XkbBounds {
	   short x1,y1;    /* upper left corner of the bounds, in mm/10 */
	   short x2,y2;    /* lower right corner of the bounds, in mm/10 */
       } XkbBoundsRec, *XkbBoundsPtr;

SEE ALSO
       XkbComputeRowBounds(3)

X Version 11				   libX11 1.6.0 		 XkbComputeShapeBounds(3)
Unix & Linux Commands & Man Pages : ©2000 - 2018 Unix and Linux Forums


All times are GMT -4. The time now is 10:02 PM.