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Unroll/roll up menus based on mouse #306

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nick black 2020-03-02 23:56:30 -05:00
parent c6a3f93691
commit 6690bc6bb9
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GPG Key ID: 5F43400C21CBFACC
1 changed files with 35 additions and 2 deletions
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37
src/lib/menu.c
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@ -196,6 +196,35 @@ err:
return -1;
}
// what section header, if any, is living at the provided x coordinate? solves
// by replaying the write_header() algorithm. returns -1 if no such section.
static int
section_x(const ncmenu* ncm, int x){
int dimx = ncplane_dim_x(ncm->ncp);
for(int i = 0 ; i < ncm->sectioncount ; ++i){
if(!ncm->sections[i].name){
continue;
}
if(ncm->sections[i].xoff < 0){ // right-aligned
int pos = dimx + ncm->sections[i].xoff;
if(x < pos){
break;
}
if(x < pos + mbswidth(ncm->sections[i].name)){
return i;
}
}else{
if(x < ncm->sections[i].xoff){
break;
}
if(x < ncm->sections[i].xoff + mbswidth(ncm->sections[i].name)){
return i;
}
}
}
return -1;
}
static int
write_header(ncmenu* ncm){ ncm->ncp->channels = ncm->headerchannels;
int dimy, dimx;
@ -488,8 +517,12 @@ bool ncmenu_offer_input(ncmenu* n, const ncinput* nc){
if(y != (n->bottom ? dimy - 1 : 0)){
return false;
}
ncmenu_rollup(n);
// FIXME unroll appropriate menu selection
int i = section_x(n, x);
if(i < 0 || i == n->unrolledsection){
ncmenu_rollup(n);
}else{
ncmenu_unroll(n, i);
}
}else if(n->unrolledsection < 0){ // all following need an unrolled section
return false;
}