XkbComputeRowBounds(3) XKB FUNCTIONS XkbComputeRowBounds(3)NAME
XkbComputeRowBounds - Update the bounding box of a row
SYNOPSIS
Bool XkbComputeRowBounds (XkbGeometryPtr geom, XkbSectionPtr section, XkbRowPtr row);
ARGUMENTS
- geom geometry that contains the section
- section
section that contains the row
- row row to be examined and updated
DESCRIPTION
XkbComputeRowBounds checks the bounds of all keys in the row and updates the bounding box of the row if necessary. XkbComputeRowBounds
returns False if any of the arguments is NULL; otherwise, it returns True.
X Version 11 libX11 1.5.0 XkbComputeRowBounds(3)
Check Out this Related Man Page
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 rec-
tangle 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 maximum 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)
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