|
|
|
|
% notcurses_lines(3)
|
|
|
|
|
% nick black <nickblack@linux.com>
|
|
|
|
|
% v3.0.9
|
|
|
|
|
|
|
|
|
|
# NAME
|
|
|
|
|
|
|
|
|
|
notcurses_lines - operations on lines and boxes
|
|
|
|
|
|
|
|
|
|
# SYNOPSIS
|
|
|
|
|
|
|
|
|
|
**#include <notcurses/notcurses.h>**
|
|
|
|
|
|
|
|
|
|
**int ncplane_hline_interp(struct ncplane* ***n***, const nccell* ***c***, unsigned ***len***, uint64_t ***c1***, uint64_t ***c2***);**
|
|
|
|
|
|
|
|
|
|
**static inline int ncplane_hline(struct ncplane* ***n***, const nccell* ***c***, unsigned ***len***);**
|
|
|
|
|
|
|
|
|
|
**int ncplane_vline_interp(struct ncplane* ***n***, const nccell* ***c***, unsigned ***len***, uint64_t ***c1***, uint64_t ***c2***);**
|
|
|
|
|
|
|
|
|
|
**static inline int ncplane_vline(struct ncplane* ***n***, const nccell* ***c***, unsigned ***len***);**
|
|
|
|
|
|
|
|
|
|
```c
|
|
|
|
|
#define NCBOXMASK_TOP 0x0001
|
|
|
|
|
#define NCBOXMASK_RIGHT 0x0002
|
|
|
|
|
#define NCBOXMASK_BOTTOM 0x0004
|
|
|
|
|
#define NCBOXMASK_LEFT 0x0008
|
|
|
|
|
#define NCBOXGRAD_TOP 0x0010
|
|
|
|
|
#define NCBOXGRAD_RIGHT 0x0020
|
|
|
|
|
#define NCBOXGRAD_BOTTOM 0x0040
|
|
|
|
|
#define NCBOXGRAD_LEFT 0x0080
|
|
|
|
|
#define NCBOXCORNER_MASK 0x0300
|
|
|
|
|
#define NCBOXCORNER_SHIFT 8u
|
|
|
|
|
```
|
|
|
|
|
|
|
|
|
|
**int ncplane_box(struct ncplane* ***n***, const nccell* ***ul***, const nccell* ***ur***, const nccell* ***ll***, const nccell* ***lr***, const nccell* ***hline***, const nccell* ***vline***, int ***ystop***, int ***xstop***, unsigned ***ctlword***);**
|
|
|
|
|
|
|
|
|
|
**static inline int ncplane_box_sized(struct ncplane* ***n***, const nccell* ***ul***, const nccell* ***ur***, const nccell* ***ll***, const nccell* ***lr***, const nccell* ***hline***, const nccell* ***vline***, int ***ylen***, int ***xlen***, unsigned ***ctlword***);**
|
|
|
|
|
|
|
|
|
|
**static inline int ncplane_perimeter(struct ncplane* ***n***, const nccell* ***ul***, const nccell* ***ur***, const nccell* ***ll***, const nccell* ***lr***, const nccell* ***hline***, const nccell* ***vline***, unsigned ***ctlword***)**
|
|
|
|
|
|
|
|
|
|
**static inline int nccells_load_box(struct ncplane* ***n***, uint16_t ***styles***, uint64_t ***channels***, nccell* ***ul***, nccell* ***ur***, nccell* ***ll***, nccell* ***lr***, nccell* ***hl***, nccell* ***vl***, const char* ***gclusters***);**
|
|
|
|
|
|
|
|
|
|
**static inline int nccells_rounded_box(struct ncplane* ***n***, uint16_t ***styles***, uint64_t ***channels***, nccell* ***ul***, nccell* ***ur***, nccell* ***ll***, nccell* ***lr***, nccell* ***hl***, nccell* ***vl***);**
|
|
|
|
|
|
|
|
|
|
**static inline int ncplane_rounded_box(struct ncplane* ***n***, uint16_t ***styles***, uint64_t ***channels***, int ***ystop***, int ***xstop***, unsigned ***ctlword***);**
|
|
|
|
|
|
|
|
|
|
**static inline int ncplane_rounded_box_sized(struct ncplane* ***n***, uint16_t ***styles***, uint64_t ***channels***, int ***ylen***, int ***xlen***, unsigned ***ctlword***);**
|
|
|
|
|
|
|
|
|
|
**static inline int nccells_double_box(struct ncplane* ***n***, uint16_t ***styles***, uint64_t ***channels***, nccell* ***ul***, nccell* ***ur***, nccell* ***ll***, nccell* ***lr***, nccell* ***hl***, nccell* ***vl***);**
|
|
|
|
|
|
|
|
|
|
**static inline int ncplane_double_box(struct ncplane* ***n***, uint16_t ***styles***, uint64_t ***channels***, int ***ystop***, int ***xstop***, unsigned ***ctlword***);**
|
|
|
|
|
|
|
|
|
|
**static inline int ncplane_double_box_sized(struct ncplane* ***n***, uint16_t ***styles***, uint64_t ***channels***, int ***ylen***, int ***xlen***, unsigned ***ctlword***);**
|
|
|
|
|
|
|
|
|
|
**int ncplane_polyfill_yx(struct ncplane* ***n***, unsigned ***y***, unsigned ***x***, const nccell* ***c***);**
|
|
|
|
|
|
|
|
|
|
**int ncplane_gradient(struct ncplane* ***n***, int ***y***, int ***x***, unsigned ***ylen***, unsigned ***xlen***, const char* ***egc***, uint16_t ***stylemask***, uint64_t ***ul***, uint64_t ***ur***, uint64_t ***ll***, uint64_t ***lr***);**
|
|
|
|
|
|
|
|
|
|
**int ncplane_highgradient2x1(struct ncplane* ***n***, int ***y***, int ***x***, unsigned ***ylen***, unsigned ***xlen***, uint32_t ***ul***, uint32_t ***ur***, uint32_t ***ll***, uint32_t ***lr***);**
|
|
|
|
|
|
|
|
|
|
**int ncplane_format(struct ncplane* ***n***, int ***y***, int ***x***, unsigned ***ylen***, unsigned ***xlen***, uint16_t ***stylemask***);**
|
|
|
|
|
|
|
|
|
|
**int ncplane_stain(struct ncplane* ***n***, int ***y***, int ***x***, unsigned ***ylen***, unsigned ***xlen***, uint64_t ***ul***, uint64_t ***ur***, uint64_t ***ll***, uint64_t ***lr***);**
|
|
|
|
|
|
|
|
|
|
# DESCRIPTION
|
|
|
|
|
|
|
|
|
|
**ncplane_polyfill_yx** starts at the specified ***y*** and ***x*** (provide
|
|
|
|
|
-1 to use the cursor's position in the relevant dimension). The cell at
|
|
|
|
|
these coordinates is replaced with ***c***. All connected cells having the
|
|
|
|
|
same content as this original cell are replaced with ***c***, recursively.
|
|
|
|
|
Two cells are connected if they are vertical or horizontal neighbors of one
|
|
|
|
|
another.
|
|
|
|
|
|
|
|
|
|
**ncplane_gradient** replaces all glyphs in the specified area with
|
|
|
|
|
***egc***, and colors them with the specified gradient. All content
|
|
|
|
|
within the specified area is destroyed.
|
|
|
|
|
|
|
|
|
|
**ncplane_gradient2x1** draws a high-definition gradient in the specified
|
|
|
|
|
area. It will return an error if UTF8 is not being used. The gradient is
|
|
|
|
|
drawn using the UPPER HALF BLOCK glyph, with two vertical steps and one
|
|
|
|
|
horizontal step in each cell. Since cells are often about twice as tall as
|
|
|
|
|
they are wide, this tends to result in very even color differences. All
|
|
|
|
|
content within the specified area is destroyed.
|
|
|
|
|
|
|
|
|
|
**ncplane_format** sets the attributes of every cell in the region having its
|
|
|
|
|
upper-left corner at ***y*** and ***x*** (provide -1 to use the cursor's
|
|
|
|
|
position in the relevant dimension), and its area defined by ***ylen*** and
|
|
|
|
|
***xlen*** (provide 0 to use all remaining area to the right and below,
|
|
|
|
|
respectively). Channels and glyphs will be unaffected.
|
|
|
|
|
|
|
|
|
|
**ncplane_stain** works the same way, but sets channels. Standard linear
|
|
|
|
|
interpolation is applied between the provided corner channels. Glyphs
|
|
|
|
|
and their attributes will be unaffected.
|
|
|
|
|
|
|
|
|
|
Box- and line-drawing is unaffected by a plane's scrolling status.
|
|
|
|
|
|
|
|
|
|
# RETURN VALUES
|
|
|
|
|
|
|
|
|
|
**ncplane_format**, **ncplane_stain**, **ncplane_gradient**,
|
|
|
|
|
**ncplane_gradient2x1**, and **ncplane_polyfill_yx** return -1 if
|
|
|
|
|
any coordinates are outside the plane, and otherwise the number of cells
|
|
|
|
|
affected.
|
|
|
|
|
|
|
|
|
|
**ncplane_hline_interp**, **ncplane_hline**, **ncplane_vline_interp**, and
|
|
|
|
|
**ncplane_vline** all return the number of glyphs drawn on success, or -1
|
|
|
|
|
on failure. Passing a length of 0 is an error.
|
|
|
|
|
|
|
|
|
|
# SEE ALSO
|
|
|
|
|
|
|
|
|
|
**notcurses(3)**,
|
|
|
|
|
**notcurses_cell(3)**,
|
|
|
|
|
**notcurses_plane(3)**
|
