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comment and move ncpixel API

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nick black 2020-08-07 14:33:35 -04:00
parent 0da11f4c3e
commit 4c822f80a9
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2 changed files with 83 additions and 79 deletions
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7
doc/man/index.html
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@ -76,9 +76,10 @@
<br/>
<small>Notcurses.com is a participant in the Amazon Services LLC Associates
Program, an affiliate advertising program designed to provide a means for
sites to earn advertising fees by advertising and linking to Amazon.</small>
<br/>
© 2019-2020 <a href="mailto:nickblack@linux.com">nickblack@linux.com</a><br/>
sites to earn advertising fees by advertising and linking to Amazon.
<br/>
© 2019-2020 <a href="mailto:nickblack@linux.com">nickblack@linux.com</a>
</small>
</center>
</body>
</html>

155
include/notcurses/notcurses.h
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@ -184,82 +184,6 @@ channel_set_rgb(unsigned* channel, int r, int g, int b){
return 0;
}
static inline uint32_t
ncpixel(int r, int g, int b){
if(r < 0) r = 0;
if(r > 255) r = 255;
if(g < 0) g = 0;
if(g > 255) g = 255;
if(b < 0) b = 0;
if(b > 255) b = 255;
return 0xff000000ul | r | (b << 8u) | (g << 16u);
}
static inline unsigned
ncpixel_a(uint32_t pixel){
return (pixel & 0xff0000fful) >> 24u;
}
static inline unsigned
ncpixel_r(uint32_t pixel){
return (pixel & 0x000000fful);
}
static inline int
ncpixel_g(uint32_t pixel){
return (pixel & 0x00ff0000ul) >> 16u;
}
static inline int
ncpixel_b(uint32_t pixel){
return (pixel & 0x0000ff00ul) >> 8u;
}
static inline int
ncpixel_set_a(uint32_t* pixel, int a){
if(a > 255 || a < 0){
return -1;
}
*pixel = (*pixel & 0x00fffffful) | (a << 24u);
return 0;
}
static inline int
ncpixel_set_r(uint32_t* pixel, int r){
if(r > 255 || r < 0){
return -1;
}
*pixel = (*pixel & 0xffffff00ul) | r;
return 0;
}
static inline int
ncpixel_set_g(uint32_t* pixel, int g){
if(g > 255 || g < 0){
return -1;
}
*pixel = (*pixel & 0xff00fffful) | (g << 16u);
return 0;
}
static inline int
ncpixel_set_b(uint32_t* pixel, int b){
if(b > 255 || b < 0){
return -1;
}
*pixel = (*pixel & 0xffff00fful) | (b << 8u);
return 0;
}
// set the RGB values of an RGB pixel
static inline int
ncpixel_set_rgb(uint32_t* pixel, int r, int g, int b){
if(ncpixel_set_r(pixel, r) || ncpixel_set_g(pixel, g) || ncpixel_set_b(pixel, b)){
return -1;
}
return 0;
}
// Set the three 8-bit components of a 32-bit channel, and mark it as not using
// the default color. Retain the other bits unchanged. r, g, and b will be
// clipped to the range [0..255].
@ -2413,6 +2337,85 @@ API int ncblit_rgba(const void* data, int linesize,
API int ncblit_bgrx(const void* data, int linesize,
const struct ncvisual_options* vopts);
// The ncpixel API facilitates direct management of the pixels within an
// ncvisual (ncvisuals keep a backing store of 32-bit RGBA pixels, and render
// them down to terminal graphics in ncvisual_render()).
static inline uint32_t
ncpixel(int r, int g, int b){
if(r < 0) r = 0;
if(r > 255) r = 255;
if(g < 0) g = 0;
if(g > 255) g = 255;
if(b < 0) b = 0;
if(b > 255) b = 255;
return 0xff000000ul | r | (b << 8u) | (g << 16u);
}
static inline unsigned
ncpixel_a(uint32_t pixel){
return (pixel & 0xff0000fful) >> 24u;
}
static inline unsigned
ncpixel_r(uint32_t pixel){
return (pixel & 0x000000fful);
}
static inline int
ncpixel_g(uint32_t pixel){
return (pixel & 0x00ff0000ul) >> 16u;
}
static inline int
ncpixel_b(uint32_t pixel){
return (pixel & 0x0000ff00ul) >> 8u;
}
static inline int
ncpixel_set_a(uint32_t* pixel, int a){
if(a > 255 || a < 0){
return -1;
}
*pixel = (*pixel & 0x00fffffful) | (a << 24u);
return 0;
}
static inline int
ncpixel_set_r(uint32_t* pixel, int r){
if(r > 255 || r < 0){
return -1;
}
*pixel = (*pixel & 0xffffff00ul) | r;
return 0;
}
static inline int
ncpixel_set_g(uint32_t* pixel, int g){
if(g > 255 || g < 0){
return -1;
}
*pixel = (*pixel & 0xff00fffful) | (g << 16u);
return 0;
}
static inline int
ncpixel_set_b(uint32_t* pixel, int b){
if(b > 255 || b < 0){
return -1;
}
*pixel = (*pixel & 0xffff00fful) | (b << 8u);
return 0;
}
// set the RGB values of an RGB pixel
static inline int
ncpixel_set_rgb(uint32_t* pixel, int r, int g, int b){
if(ncpixel_set_r(pixel, r) || ncpixel_set_g(pixel, g) || ncpixel_set_b(pixel, b)){
return -1;
}
return 0;
}
// An ncreel is a notcurses region devoted to displaying zero or more
// line-oriented, contained panels between which the user may navigate. If at
// least one panel exists, there is an active panel. As much of the active