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document ncplane_set_[fb]channel

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nick black 2022-01-23 21:24:07 -05:00
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3 changed files with 37 additions and 9 deletions
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18
USAGE.md
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@ -1803,10 +1803,17 @@ Helpers are provided to manipulate an `ncplane`'s `channels` member. They are
all implemented in terms of the lower-level [Channels API](#channels).
```c
// Get the current channels or attribute word for ncplane 'n'.
// Get the current colors and alpha values for ncplane 'n'.
uint64_t ncplane_channels(const struct ncplane* n);
// Get the current styling for the ncplane 'n'.
uint16_t ncplane_attr(const struct ncplane* n);
// Set the alpha and coloring bits of the plane's current channels from a
// 64-bit pair of channels.
API void ncplane_set_channels(struct ncplane* n, uint64_t channels)
__attribute__ ((nonnull (1)));
// Extract the background alpha and coloring bits from a 64-bit channel
// pair as a single 32-bit value.
static inline uint32_t
@ -1821,6 +1828,15 @@ ncplane_fchannel(const struct ncplane* n){
return ncchannels_fchannel(ncplane_channels(n));
}
// Set the background alpha and coloring bits of the plane's current
// channels from a single 32-bit value.
uint64_t ncplane_set_bchannel(struct ncplane* n, uint32_t channel);
__attribute__ ((nonnull (1)));
// Set the foreground alpha and coloring bits of the plane's current
// channels from a single 32-bit value.
uint64_t ncplane_set_fchannel(struct ncplane* n, uint32_t channel);
// Extract 24 bits of working foreground RGB from an ncplane, shifted to LSBs.
static inline unsigned
ncplane_fg_rgb(const struct ncplane* nc){

4
doc/man/man3/notcurses_plane.3.md
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@ -151,6 +151,10 @@ typedef struct ncplane_options {
**static inline unsigned ncplane_fchannel(struct ncplane* ***nc***);**
**uint64_t ncplane_set_bchannel(struct ncplane* ***nc***, uint32_t ***channel***);**
**uint64_t ncplane_set_fchannel(struct ncplane* ***nc***, uint32_t ***channel***);**
**static inline unsigned ncplane_fg_rgb(struct ncplane* ***nc***);**
**static inline unsigned ncplane_bg_rgb(struct ncplane* ***nc***);**

24
include/notcurses/notcurses.h
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@ -2117,11 +2117,11 @@ ncplane_cursor_x(const struct ncplane* n){
return x;
}
// Get the current channels or attribute word for ncplane 'n'.
// Get the current colors and alpha values for ncplane 'n'.
API uint64_t ncplane_channels(const struct ncplane* n)
__attribute__ ((nonnull (1)));
// Return the current styling for this ncplane.
// Get the current styling for the ncplane 'n'.
API uint16_t ncplane_styles(const struct ncplane* n)
__attribute__ ((nonnull (1)));
@ -2880,25 +2880,33 @@ ncplane_fchannel(const struct ncplane* n){
return ncchannels_fchannel(ncplane_channels(n));
}
API void ncplane_set_channels(struct ncplane* n, uint64_t channels);
// Set the alpha and coloring bits of the plane's current channels from a
// 64-bit pair of channels.
API void ncplane_set_channels(struct ncplane* n, uint64_t channels)
__attribute__ ((nonnull (1)));
// Set the background alpha and coloring bits of the plane's current
// channels from a single 32-bit value.
API uint64_t ncplane_set_bchannel(struct ncplane* n, uint32_t channel);
API uint64_t ncplane_set_bchannel(struct ncplane* n, uint32_t channel)
__attribute__ ((nonnull (1)));
// Set the foreground alpha and coloring bits of the plane's current
// channels from a single 32-bit value.
API uint64_t ncplane_set_fchannel(struct ncplane* n, uint32_t channel);
API uint64_t ncplane_set_fchannel(struct ncplane* n, uint32_t channel)
__attribute__ ((nonnull (1)));
// Set the specified style bits for the ncplane 'n', whether they're actively
// supported or not.
API void ncplane_set_styles(struct ncplane* n, unsigned stylebits);
API void ncplane_set_styles(struct ncplane* n, unsigned stylebits)
__attribute__ ((nonnull (1)));
// Add the specified styles to the ncplane's existing spec.
API void ncplane_on_styles(struct ncplane* n, unsigned stylebits);
API void ncplane_on_styles(struct ncplane* n, unsigned stylebits)
__attribute__ ((nonnull (1)));
// Remove the specified styles from the ncplane's existing spec.
API void ncplane_off_styles(struct ncplane* n, unsigned stylebits);
API void ncplane_off_styles(struct ncplane* n, unsigned stylebits)
__attribute__ ((nonnull (1)));
// Extract 24 bits of working foreground RGB from an ncplane, shifted to LSBs.
static inline uint32_t