2.8 KiB
% notcurses_channels(3) % nick black nickblack@linux.com % v2.0.2
NAME
notcurses_channels - operations on notcurses channels
SYNOPSIS
#include <notcurses/notcurses.h>
#define CHANNELS_RGB_INITIALIZER(fr, fg, fb, br, bg, bb) \
(((((uint64_t)(fr) << 16u) + ((uint64_t)(fg) << 8u) + (uint64_t)(fb)) << 32ull) + \
(((br) << 16u) + ((bg) << 8u) + (bb)) + CELL_BGDEFAULT_MASK + CELL_FGDEFAULT_MASK)
#define CHANNEL_RGB_INITIALIZER(r, g, b) \
(((uint32_t)r << 16u) + ((uint32_t)g << 8u) + (b) + CELL_BGDEFAULT_MASK)
unsigned channel_r(unsigned channel);
unsigned channel_g(unsigned channel);
unsigned channel_b(unsigned channel);
unsigned channel_rgb8(unsigned channel, unsigned restrict r, unsigned restrict g, unsigned* restrict b);**
int channel_set_rgb8(unsigned channel, int r, int g, int b);*
int channel_set(unsigned channel, unsigned rgb);*
unsigned channel_alpha(unsigned channel);
int channel_set_alpha(unsigned channel, int alpha);*
bool channel_default_p(unsigned channel);
unsigned channel_set_default(unsigned channel);*
unsigned channels_bchannel(uint64_t channels);
unsigned channels_fchannel(uint64_t channels);
uint64_t channels_set_bchannel(uint64_t channels, uint32_t channel);*
uint64_t channels_set_fchannel(uint64_t channels, uint32_t channel);*
unsigned channels_fg_rgb(uint64_t channels);
unsigned channels_bg_rgb(uint64_t channels);
unsigned channels_fg_alpha(uint64_t channels);
unsigned channels_bg_alpha(uint64_t channels);
unsigned channels_fg_rgb8(uint64_t channels, unsigned r, unsigned g, unsigned* b);**
unsigned channels_bg_rgb8(uint64_t channels, unsigned r, unsigned g, unsigned* b);**
int channels_set_fg_rgb8(uint64_t channels, int r, int g, int b);*
int channels_set_bg_rgb8(uint64_t channels, int r, int g, int b);*
int channels_set_fg_rgb(uint64_t channels, unsigned rgb);*
int channels_set_bg_rgb(uint64_t channels, unsigned rgb);*
int channels_set_fg_alpha(uint64_t channels, int alpha);*
int channels_set_bg_alpha(uint64_t channels, int alpha);*
bool channels_fg_default_p(uint64_t channels);
bool channels_bg_default_p(uint64_t channels);
uint64_t channels_set_fg_default(uint64_t channels);*
uint64_t channels_set_bg_default(uint64_t channels);*
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)