account for margins in sixel_state() #1561

src/lib/internal.h

@@ -910,16 +910,17 @@ plane_debug(const ncplane* n, bool details){
   }
 }
 
+// cell coordinates *within the sprixel*, not absolute
+int sprite_wipe(const notcurses* nc, sprixel* s, int y, int x);
+int sixel_wipe(const notcurses* nc, sprixel* s, int ycell, int xcell);
 // nulls out a cell from a kitty bitmap via changing the alpha value
 // throughout to 0. the same trick doesn't work on sixel, but there we
 // can just print directly over the bitmap.
-int sprite_kitty_cell_wipe(const notcurses* nc, sprixel* s, int y, int x);
+int kitty_wipe(const notcurses* nc, sprixel* s, int y, int x);
 
-// cell coordinates *within the sprixel*, not absolute
-int sprite_wipe(const notcurses* nc, sprixel* s, int y, int x);
-int sixel_wipe(const notcurses* nc, sprixel* s, int ycell, int xcell);
 void sprixel_free(sprixel* s);
 void sprixel_hide(sprixel* s);
+
 int sprite_draw(const notcurses* n, const ncpile *p, sprixel* s, FILE* out);
 int kitty_draw(const notcurses* n, const ncpile *p, sprixel* s, FILE* out);
 int sixel_draw(const notcurses* n, const ncpile *p, sprixel* s, FILE* out);
@@ -988,9 +989,10 @@ scrub_tam_boundaries(sprixcell_e* tam, int leny, int lenx, int cdimy, int cdimx)
 
 // get the TAM entry for these (absolute) coordinates
 static inline sprixcell_e
-sprixel_state(sprixel* s, int y, int x){
-  int localy = y - s->n->absy;
-  int localx = x - s->n->absx;
+sprixel_state(const sprixel* s, int y, int x){
+  const ncplane* stdn = notcurses_stdplane_const(ncplane_notcurses_const(s->n));
+  int localy = y - (s->n->absy - stdn->absy);
+  int localx = x - (s->n->absx - stdn->absx);
   assert(localy >= 0);
   assert(localy < s->dimy);
   assert(localx >= 0);

src/lib/kitty.c

@@ -153,7 +153,7 @@ kitty_null(char* triplet, int skip, int max, int pleft){
 }
 
 #define RGBA_MAXLEN 768 // 768 base64-encoded pixels in 4096 bytes
-int sprite_kitty_cell_wipe(const notcurses* nc, sprixel* s, int ycell, int xcell){
+int kitty_wipe(const notcurses* nc, sprixel* s, int ycell, int xcell){
   if(s->n->tacache[s->dimx * ycell + xcell] == SPRIXCELL_ANNIHILATED){
 //fprintf(stderr, "CACHED WIPE %d %d/%d\n", s->id, ycell, xcell);
     return 0; // already annihilated, needn't draw glyph in kitty

src/lib/terminfo.c

@@ -61,7 +61,7 @@ apply_term_heuristics(tinfo* ti, const char* termname){
     ti->quadrants = true;
     ti->pixel_query_done = true;
     ti->bitmap_supported = true;
-    ti->pixel_cell_wipe = sprite_kitty_cell_wipe;
+    ti->pixel_cell_wipe = kitty_wipe;
     ti->pixel_destroy = kitty_delete;
     ti->pixel_init = kitty_init;
     ti->pixel_draw = kitty_draw;