XFontSetExtents
NAMESTRUCTURES
SEE ALSO
NAME
XFontSetExtents − XFontSetExtents structure
STRUCTURES
The XFontSetExtents structure contains:
typedef struct {
|
XRectangle max_ink_extent;/* over all drawable characters */ |
||
|
XRectangle max_logical_extent;/* over all drawable characters */ |
} XFontSetExtents;
The XRectangle structures used to return font set metrics are the usual Xlib screen-oriented rectangles with x, y giving the upper left corner, and width and height always positive.
The max_ink_extent member gives the maximum extent, over all drawable characters, of the rectangles that bound the character glyph image drawn in the foreground color, relative to a constant origin. See XmbTextExtents and XwcTextExtents for detailed semantics.
The max_logical_extent member gives the maximum extent, over all drawable characters, of the rectangles that specify minimum spacing to other graphical features, relative to a constant origin. Other graphical features drawn by the client, for example, a border surrounding the text, should not intersect this rectangle. The max_logical_extent member should be used to compute minimum interline spacing and the minimum area that must be allowed in a text field to draw a given number of arbitrary characters.
Due to context-dependent rendering, appending a given character to a string may change the string’s extent by an amount other than that character’s individual extent.
SEE ALSO
XCreateFontSet(3),
XExtentsOfFontSet(3), XFontsOfFontSet(3)
Xlib − C Language X Interface
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