FakeAllocColor(D3nfb)

FakeAllocColor, FakeFreeColor -- allocate a color pixel

Synopsis


void
FakeAllocColor (pmap, item)
    ColormapPtr pmap;
    xColorItem  *item;

void
FakeFreeColor(pmap, pixel)
    ColormapPtr pmap;
    Pixel pixel;

Description

FakeAllocColor( ) fakes an AllocColor request by returning a free pixel if one is available; otherwise, it returns the closest matching pixel. This is used by the mi software sprite code to recolor cursors.

FakeFreeColor( ) frees the pixel that was allocated with FakeAllocColor( ).

Arguments

pmap: installedCmap pointer in the nfbScrnPriv(D4nfb) structure
item: initialized red, green, and blue members of a xColorItem structure.
pixel: pixel member of an xColorItem structure.

Exit codes

None

Usage notes

These functions are used for drivers that use a simple configuration without a screen prototype and are initialized with the nfbScreenInit(D3nfb) function. nfbScreenInit( ) declares the installedCmap structure.

For an example of how these functions are used, see the ColorCursor( ) routine in the nteCursor.c file.

Version applicability

This function is supported for NFB drivers on all releases of SCO OpenServer 5, SVR5, and AIX 5L.

Source files

Routine source: ./dix/colormap.c
Driver source file: xxxCursor.c

References

nfbScreenInit(D3nfb)