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notcurses/doc/man/man3/notcurses_channels.3.md
nick black 49ae79341d
v1.6.15
2020-08-16 11:04:43 -04:00

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% notcurses_channels(3) % nick black nickblack@linux.com % v1.6.15

NAME

notcurses_channels - operations on notcurses channels

SYNOPSIS

#include <notcurses/notcurses.h>

static inline unsigned channel_r(unsigned channel);

static inline unsigned channel_g(unsigned channel);

static inline unsigned channel_b(unsigned channel);

static inline unsigned channel_rgb(unsigned channel, unsigned restrict r, unsigned restrict g, unsigned* restrict b);**

static inline int channel_set_rgb(unsigned channel, int r, int g, int b);*

static inline int channel_set(unsigned channel, unsigned rgb);*

static inline unsigned channel_alpha(unsigned channel);

static inline int channel_set_alpha(unsigned channel, int alpha);*

static inline bool channel_default_p(unsigned channel);

static inline unsigned channel_set_default(unsigned channel);*

static inline unsigned channels_bchannel(uint64_t channels);

static inline unsigned channels_fchannel(uint64_t channels);

static inline uint64_t channels_set_bchannel(uint64_t channels, uint32_t channel);*

static inline uint64_t channels_set_fchannel(uint64_t channels, uint32_t channel);*

static inline unsigned channels_fg(uint64_t channels);

static inline unsigned channels_bg(uint64_t channels);

static inline unsigned channels_fg_alpha(uint64_t channels);

static inline unsigned channels_bg_alpha(uint64_t channels);

static inline unsigned channels_fg_rgb(uint64_t channels, unsigned r, unsigned g, unsigned* b);**

static inline unsigned channels_bg_rgb(uint64_t channels, unsigned r, unsigned g, unsigned* b);**

static inline int channels_set_fg_rgb(uint64_t channels, int r, int g, int b);*

static inline int channels_set_bg_rgb(uint64_t channels, int r, int g, int b);*

static inline int channels_set_fg(uint64_t channels, unsigned rgb);*

static inline int channels_set_bg(uint64_t channels, unsigned rgb);*

static inline int channels_set_fg_alpha(uint64_t channels, int alpha);*

static inline int channels_set_bg_alpha(uint64_t channels, int alpha);*

static inline bool channels_fg_default_p(uint64_t channels);

static inline bool channels_bg_default_p(uint64_t channels);

static inline uint64_t channels_set_fg_default(uint64_t channels);*

static inline uint64_t channels_set_bg_default(uint64_t channels);*

static inline unsigned channels_blend(unsigned c1, unsigned c2, unsigned blends);

DESCRIPTION

RETURN VALUES

Functions returning int return -1 on failure, or 0 on success. Failure is always due to invalid inputs. Functions returning bool are predicates, and return the requested value. Functions returning unsigned forms return the input, modified as requested.

SEE ALSO

notcurses(3), notcurses_cell(3), notcurses_plane(3), notcurses_output(3)