XkbComputeShapeBounds(3) - phpMan

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 1.6.7                  XkbComputeShapeBounds(3)

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