termptyesc: handle DECFRA

src/bin/termptyesc.c

@@ -825,6 +825,63 @@ bad:
   ty->termstate.bottom_margin = 0;
 }
 
+static void
+_handle_esc_csi_decfra(Termpty *ty, Eina_Unicode **b)
+{
+   int c = _csi_arg_get(b);
+
+   int top = _csi_arg_get(b);
+   int left = _csi_arg_get(b);
+   int bottom = _csi_arg_get(b);
+   int right = _csi_arg_get(b);
+   int len;
+
+   DBG("DECFRA (%d; %d;%d;%d;%d) Fill Rectangular Area",
+       c, top, left, bottom, right);
+   if (! ((c >= 32 && c <= 126) || (c >= 160 && c <= 255)))
+     return;
+
+   TERMPTY_RESTRICT_FIELD(top, 1, ty->h);
+   top--;
+   if (ty->termstate.restrict_cursor)
+     top += ty->termstate.top_margin;
+
+   TERMPTY_RESTRICT_FIELD(left, 1, ty->w);
+   left--;
+   if (ty->termstate.restrict_cursor)
+     left += ty->termstate.left_margin;
+
+   if (right < 1)
+     right = ty->w;
+   if (ty->termstate.restrict_cursor)
+     {
+        right += ty->termstate.left_margin;
+        if (ty->termstate.right_margin && right >= ty->termstate.right_margin)
+          right = ty->termstate.right_margin;
+     }
+
+   if (bottom < 1)
+     bottom = ty->h;
+   if (ty->termstate.restrict_cursor)
+     {
+        bottom += ty->termstate.top_margin;
+        if (ty->termstate.bottom_margin && bottom >= ty->termstate.bottom_margin)
+          bottom = ty->termstate.bottom_margin - 1;
+     }
+   bottom--;
+
+   if ((bottom < top) || (right < left))
+     return;
+
+   len = right - left;
+
+   for (; top <= bottom; top++)
+     {
+        Termcell *cells = &(TERMPTY_SCREEN(ty, left, top));
+        termpty_cells_fill(ty, c, cells, len);
+     }
+}
+
 static void
 _handle_esc_csi_cursor_pos_set(Termpty *ty, Eina_Unicode **b,
                                const Eina_Unicode *cc)
@@ -990,6 +1047,9 @@ _handle_esc_csi(Termpty *ty, const Eina_Unicode *c, Eina_Unicode *ce)
         TERMPTY_RESTRICT_FIELD(ty->cursor_state.cy, 0, ty->h);
         ty->cursor_state.cx = 0;
         break;
+      case 'x':
+        _handle_esc_csi_decfra(ty, &b);
+        break;
       case 'X': // erase N chars
         arg = _csi_arg_get(&b);
         TERMPTY_RESTRICT_FIELD(arg, 1, ty->w);

src/bin/termptyops.c

@@ -22,16 +22,24 @@
 #define DBG(...)      EINA_LOG_DOM_DBG(_termpty_log_dom, __VA_ARGS__)
 
 void
-termpty_cells_clear(Termpty *ty, Termcell *cells, int count)
+termpty_cells_fill(Termpty *ty, Eina_Unicode codepoint,
+                   Termcell *cells, int count)
 {
    Termcell src;
 
    memset(&src, 0, sizeof(src));
-   src.codepoint = 0;
+   src.codepoint = codepoint;
    src.att = ty->termstate.att;
    termpty_cell_fill(ty, &src, cells, count);
 }
 
+void
+termpty_cells_clear(Termpty *ty, Termcell *cells, int count)
+{
+   termpty_cells_fill(ty, 0, cells, count);
+}
+
+
 void
 termpty_text_scroll(Termpty *ty, Eina_Bool clear)
 {

src/bin/termptyops.h

@@ -10,6 +10,7 @@ typedef enum _Termpty_Clear
 
 void termpty_text_save_top(Termpty *ty, Termcell *cells, ssize_t w_max);
 void termpty_cells_copy(Termpty *ty, Termcell *cells, Termcell *dest, int count);
+void termpty_cells_fill(Termpty *ty, Eina_Unicode codepoint, Termcell *cells, int count);
 void termpty_cells_clear(Termpty *ty, Termcell *cells, int count);
 void termpty_text_scroll(Termpty *ty, Eina_Bool clear);
 void termpty_text_scroll_rev(Termpty *ty, Eina_Bool clear);