plots: get width/height for pixel plots #1382

src/input/input.cpp

@@ -227,7 +227,7 @@ int input_demo(ncpp::NotCurses* nc) {
   popts.minchannels = popts.maxchannels = 0;
   ncchannels_set_fg_rgb8(&popts.minchannels, 0x40, 0x50, 0xb0);
   ncchannels_set_fg_rgb8(&popts.maxchannels, 0x40, 0xff, 0xd0);
-  popts.gridtype = static_cast<ncblitter_e>(NCBLIT_8x1);
+  popts.gridtype = static_cast<ncblitter_e>(NCBLIT_PIXEL);
   plot = ncuplot_create(pplane, &popts, 0, 0);
   if(!plot){
     return EXIT_FAILURE;

src/lib/plot.c

@@ -45,12 +45,14 @@ typedef struct nc##X##plot { \
 \
 int redraw_plot_##T(nc##X##plot* ncp){ \
   ncplane_erase(ncp->plot.ncp); \
-  const int scale = ncp->plot.bset->width; \
+  const int scale = ncp->plot.bset->geom == NCBLIT_PIXEL ? \
+      ncplane_notcurses_const(ncp->plot.ncp)->tcache.cellpixx : ncp->plot.bset->width; \
   int dimy, dimx; \
   ncplane_dim_yx(ncp->plot.ncp, &dimy, &dimx); \
   const int scaleddim = dimx * scale; \
   /* each transition is worth this much change in value */ \
-  const size_t states = ncp->plot.bset->height + 1; \
+  const size_t states = (ncp->plot.bset->geom == NCBLIT_PIXEL ? \
+      ncplane_notcurses_const(ncp->plot.ncp)->tcache.cellpixy : ncp->plot.bset->height) + 1; \
   /* FIXME can we not rid ourselves of this meddlesome double? either way, the \
      interval is one row's range (for linear plots), or the base (base^slots== \
      maxy-miny) of the range (for exponential plots). */ \
@@ -138,6 +140,7 @@ int redraw_plot_##T(nc##X##plot* ncp){ \
       calc_gradient_channels(&channels, ncp->plot.minchannels, ncp->plot.minchannels, \
                              ncp->plot.maxchannels, ncp->plot.maxchannels, y, x, dimy, dimx); \
       ncplane_set_channels(ncp->plot.ncp, channels); \
+      if(egc){ \
         size_t egcidx = 0, sumidx = 0; \
         /* if we've got at least one interval's worth on the number of positions \
           times the number of intervals per position plus the starting offset, \
@@ -201,6 +204,7 @@ int redraw_plot_##T(nc##X##plot* ncp){ \
         if(done){ \
           break; \
         } \
+      } \
       if(ncp->plot.exponentiali){ \
         intervalbase = ncp->miny + pow(interval, (y + 1) * states - 1); \
       }else{ \