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add ncplane_resize_simple()

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nick black 2020-01-03 21:37:06 -05:00
parent 03636b14d3
commit 2ada135fc2
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1 changed files with 22 additions and 11 deletions
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33
include/notcurses.h
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@ -407,6 +407,17 @@ API void notcurses_reset_stats(struct notcurses* nc, ncstats* stats);
// Returns the length of the EGC in bytes. // Returns the length of the EGC in bytes.
API char* notcurses_at_yx(struct notcurses* nc, int y, int x, cell* c); API char* notcurses_at_yx(struct notcurses* nc, int y, int x, cell* c);
// Return the dimensions of this ncplane.
API void ncplane_dim_yx(const struct ncplane* n, int* RESTRICT rows,
int* RESTRICT cols);
// Return our current idea of the terminal dimensions in rows and cols.
static inline void
notcurses_term_dim_yx(const struct notcurses* n, int* RESTRICT rows,
int* RESTRICT cols){
ncplane_dim_yx(notcurses_stdplane_const(n), rows, cols);
}
// Resize the specified ncplane. The four parameters 'keepy', 'keepx', // Resize the specified ncplane. The four parameters 'keepy', 'keepx',
// 'keepleny', and 'keeplenx' define a subset of the ncplane to keep, // 'keepleny', and 'keeplenx' define a subset of the ncplane to keep,
// unchanged. This may be a section of size 0, though none of these four // unchanged. This may be a section of size 0, though none of these four
@ -424,6 +435,17 @@ API char* notcurses_at_yx(struct notcurses* nc, int y, int x, cell* c);
API int ncplane_resize(struct ncplane* n, int keepy, int keepx, int keepleny, API int ncplane_resize(struct ncplane* n, int keepy, int keepx, int keepleny,
int keeplenx, int yoff, int xoff, int ylen, int xlen); int keeplenx, int yoff, int xoff, int ylen, int xlen);
// Resize the plane, retaining what data we can (everything, unless we're
// shrinking in some dimension). Keep the origin where it is.
static inline int
ncplane_resize_simple(struct ncplane* n, int ylen, int xlen){
int oldy, oldx;
ncplane_dim_yx(n, &oldy, &oldx); // current dimensions of 'n'
int keepleny = oldy > ylen ? ylen : oldy;
int keeplenx = oldx > xlen ? xlen : oldx;
return ncplane_resize(n, 0, 0, keepleny, keeplenx, 0, 0, ylen, xlen);
}
// Destroy the specified ncplane. None of its contents will be visible after // Destroy the specified ncplane. None of its contents will be visible after
// the next call to notcurses_render(). It is an error to attempt to destroy // the next call to notcurses_render(). It is an error to attempt to destroy
// the standard plane. // the standard plane.
@ -492,17 +514,6 @@ API void* ncplane_set_userptr(struct ncplane* n, void* opaque);
API void* ncplane_userptr(struct ncplane* n); API void* ncplane_userptr(struct ncplane* n);
API const void* ncplane_userptr_const(const struct ncplane* n); API const void* ncplane_userptr_const(const struct ncplane* n);
// Returns the dimensions of this ncplane.
API void ncplane_dim_yx(const struct ncplane* n, int* RESTRICT rows,
int* RESTRICT cols);
// Return our current idea of the terminal dimensions in rows and cols.
static inline void
notcurses_term_dim_yx(const struct notcurses* n, int* RESTRICT rows,
int* RESTRICT cols){
ncplane_dim_yx(notcurses_stdplane_const(n), rows, cols);
}
// Return the column at which 'c' cols ought start in order to be aligned // Return the column at which 'c' cols ought start in order to be aligned
// according to 'align' within ncplane 'n'. Returns INT_MAX on invalid 'align'. // according to 'align' within ncplane 'n'. Returns INT_MAX on invalid 'align'.
// Undefined behavior on negative 'c'. // Undefined behavior on negative 'c'.