ui.c

struct gui_bnd {int min, mid, max, ext;};
struct gui_box {
    struct gui_bnd x;
    struct gui_bnd y;
};
#define gui_box(x,y,w,h) (struct gui_box){{x,x+(w>>1),x+w,w},{y,y+(h>>1),y+h,h}}
#define gui_min_max(a,b) (struct gui_bnd){a,a+((b-a)>>1),b,b-a}
#define gui_min_ext(m,e) (struct gui_bnd){m,m+(e>>1),m+e,e}
#define gui_max_ext(m,e) (struct gui_bnd){m-e,m-(e>>1),m,e}
#define gui_mid_min(c,m) (struct gui_bnd){m,c,m+c-m,(m-c)<<1}
#define gui_mid_max(c,m) (struct gui_bnd){m-((m-c)<<1),c,m, (m-c)<<1}
#define gui_mid_ext(c,e) (struct gui_bnd){c-(e>>1),c,c+(e>>1),e}

int main(int argc, char **argv)
{
    /* tab control */
    struct gui_tab_ctl tab = {.box = menu.box, .sel = app->fs_sel};
    tab.box.y = gui_min_max(menu.box.y.min + gap, pan->box.y.max - pad);
    gui_tab_ctl_begin(ctx, &tab, pan, TAG_CNT);
    {
        /* tab header */
        struct gui_tab_ctl_hdr hdr = {.box = tab.hdr};
        gui_tab_hdr_begin(ctx, &tab, &hdr);
        for (int i = 0; i < TAG_CNT; ++i) {
            const struct app_view *fs = app->views + i;
            const char *lbl = fs->act ? path_file(fs->path,0): "home";
            gui_tab_hdr_slot(ctx, &tab, &hdr, hash_ptr(fs), lbl, 0);
        }
        gui_tab_hdr_end(ctx, &tab, &hdr);
        
        /* tab body */
        struct gui_panel bdy = {.box = tab.bdy};
        gui_panel_begin(ctx, &bdy, &tab);
        {
            /* search */
            struct gui_panel fnd = {.box = bdy.box};
            fnd.box.y = gui_min_ext(bdy.box.y.min, ctx->cfg.item_size);
            gui_search(app, fs, ctx, &fnd, &bdy);

            /* table */
            struct gui_panel tbl = {.box = bdy.box};
            tbl.box.y = gui_min_max(fnd.box.y.max + ctx->cfg.gap[1], bdy.box.y.max);
            gui_dir_tbl(app, &app->views[app->fs_sel], ctx, &tbl, &bdy);
        }
        gui_panel_end(ctx, &bdy);
    }
    gui_tab_ctl_end(ctx, &tab);
    app->fs_sel = tab.sel;
    return 0;
}