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ncselector_dim_yx: eliminate boundary checks

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nick black 2020-08-07 21:00:06 -04:00 committed by Nick Black
parent c0ffe0ae91
commit c21f0fb812
2 changed files with 8 additions and 16 deletions
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4
NEWS.md
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@ -4,7 +4,9 @@ rearrangements of Notcurses.
* 1.6.12 (not yet released)
* `ncselector_redraw()` and `ncmultiselector_redraw()` no longer call
`notcurses_render()`. You will need to call `notcurses_render()` for the
display to reflect any changes.
display to reflect any changes. `ncselector_create` now binds the plane
it creates to the plane it was provided, and no longer checks to ensure
the widget can be fit within the borders of this binding plane.
* 1.6.11 (2020-08-03)
* `cell_egc_idx()` is no longer exported; it was never intended to be.

20
src/lib/selector.c
View File

@ -191,9 +191,8 @@ ncselector_draw(ncselector* n){
return 0;
}
// calculate the necessary dimensions based off properties of the selector and
// the containing screen FIXME should be based on containing ncplane
static int
// calculate the necessary dimensions based off properties of the selector
static void
ncselector_dim_yx(notcurses* nc, const ncselector* n, int* ncdimy, int* ncdimx){
int rows = 0, cols = 0; // desired dimensions
int dimy, dimx; // dimensions of containing screen
@ -204,9 +203,6 @@ ncselector_dim_yx(notcurses* nc, const ncselector* n, int* ncdimy, int* ncdimx){
// we have a top line, a bottom line, two lines of margin, and must be able
// to display at least one row beyond that, so require five more
rows += 5;
if(rows > dimy){ // insufficient height to display selector
return -1;
}
rows += (!n->maxdisplay || n->maxdisplay > n->itemcount ? n->itemcount : n->maxdisplay) - 1; // rows necessary to display all options
if(rows > dimy){ // claw excess back
rows = dimy;
@ -217,11 +213,7 @@ ncselector_dim_yx(notcurses* nc, const ncselector* n, int* ncdimy, int* ncdimx){
if(n->titlecols + 4 > cols){
cols = n->titlecols + 4;
}
if(cols > dimx){ // insufficient width to display selector
return -1;
}
*ncdimx = cols;
return 0;
}
ncselector* ncselector_create(ncplane* nc, int y, int x, const ncselector_options* opts){
@ -290,10 +282,8 @@ ncselector* ncselector_create(ncplane* nc, int y, int x, const ncselector_option
}
}
int dimy, dimx;
if(ncselector_dim_yx(nc->nc, ns, &dimy, &dimx)){
goto freeitems;
}
if(!(ns->ncp = ncplane_new(nc->nc, dimy, dimx, y, x, NULL))){
ncselector_dim_yx(nc->nc, ns, &dimy, &dimx);
if(!(ns->ncp = ncplane_bound(nc, dimy, dimx, y, x, NULL))){
goto freeitems;
}
cell_init(&ns->background);
@ -832,7 +822,7 @@ ncmultiselector* ncmultiselector_create(ncplane* nc, int y, int x,
if(ncmultiselector_dim_yx(nc->nc, ns, &dimy, &dimx)){
goto freeitems;
}
if(!(ns->ncp = ncplane_new(nc->nc, dimy, dimx, y, x, NULL))){
if(!(ns->ncp = ncplane_bound(nc, dimy, dimx, y, x, NULL))){
goto freeitems;
}
cell_init(&ns->background);