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ncplane_double_box_cells(), used in sliding-demo #67

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nick black 2019-11-28 16:27:15 -05:00
parent ad183a6322
commit fe14403f9e
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GPG Key ID: 5F43400C21CBFACC
2 changed files with 29 additions and 15 deletions
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36
include/notcurses.h
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@ -432,18 +432,20 @@ cell_egc_idx(const cell* c){
return c->gcluster - 0x80;
}
// load up six cells with the EGCs necessary to draw a light, rounded box.
// returns 0 on success, -1 on error. on error, any cells this function might
// have loaded before the error are cell_release()d.
// load up six cells with the EGCs necessary to draw a box. returns 0 on
// success, -1 on error. on error, any cells this function might
// have loaded before the error are cell_release()d. There must be at least
// six EGCs in gcluster.
static inline int
ncplane_rounded_box_cells(struct ncplane* n, cell* ul, cell* ur, cell* ll,
cell* lr, cell* hl, cell* vl){
if(cell_load(n, ul, "╭") > 0){
if(cell_load(n, ur, "╮") > 0){
if(cell_load(n, ll, "╰") > 0){
if(cell_load(n, lr, "╯") > 0){
if(cell_load(n, hl, "─") > 0){
if(cell_load(n, vl, "│") > 0){
ncplane_box_cells(struct ncplane* n, cell* ul, cell* ur, cell* ll,
cell* lr, cell* hl, cell* vl, const char* gclusters){
int ulen;
if((ulen = cell_load(n, ul, gclusters)) > 0){
if((ulen = cell_load(n, ur, gclusters += ulen)) > 0){
if((ulen = cell_load(n, ll, gclusters += ulen)) > 0){
if((ulen = cell_load(n, lr, gclusters += ulen)) > 0){
if((ulen = cell_load(n, hl, gclusters += ulen)) > 0){
if((ulen = cell_load(n, vl, gclusters += ulen)) > 0){
return 0;
}
cell_release(n, hl);
@ -459,6 +461,18 @@ ncplane_rounded_box_cells(struct ncplane* n, cell* ul, cell* ur, cell* ll,
return -1;
}
static inline int
ncplane_rounded_box_cells(struct ncplane* n, cell* ul, cell* ur, cell* ll,
cell* lr, cell* hl, cell* vl){
return ncplane_box_cells(n, ul, ur, ll, lr, hl, vl, "╭╮╰╯─│");
}
static inline int
ncplane_double_box_cells(struct ncplane* n, cell* ul, cell* ur, cell* ll,
cell* lr, cell* hl, cell* vl){
return ncplane_box_cells(n, ul, ur, ll, lr, hl, vl, "╔╗╚╝═║");
}
// multimedia functionality
struct AVFrame;

8
src/demo/sliding.c
View File

@ -16,12 +16,12 @@ fill_chunk(struct ncplane* n, int idx){
cell ul = CELL_TRIVIAL_INITIALIZER, ur = CELL_TRIVIAL_INITIALIZER;
cell ll = CELL_TRIVIAL_INITIALIZER, lr = CELL_TRIVIAL_INITIALIZER;
cell hl = CELL_TRIVIAL_INITIALIZER, vl = CELL_TRIVIAL_INITIALIZER;
if(ncplane_rounded_box_cells(n, &ul, &ur, &ll, &lr, &hl, &vl)){
if(ncplane_double_box_cells(n, &ul, &ur, &ll, &lr, &hl, &vl)){
return -1;
}
int r = 255 - (idx * 3);
int g = idx * 3;
int b = 255 - (idx * 3);
int r = (255 - (idx * 3)) % 256;
int g = (idx * 3) % 256;
int b = (255 - (idx * 3)) % 256;
cell_set_fg(&ul, r, g, b);
cell_set_fg(&ur, r, g, b);
cell_set_fg(&ll, r, g, b);