diff options
| -rw-r--r-- | st.c | 33 |
1 files changed, 26 insertions, 7 deletions
@@ -97,6 +97,7 @@ enum cursor_movement { enum cursor_state { CURSOR_DEFAULT = 0, CURSOR_WRAPNEXT = 1, + CURSOR_ORIGIN = 2 }; enum glyph_state { @@ -300,6 +301,7 @@ static void tdeleteline(int); static void tinsertblank(int); static void tinsertblankline(int); static void tmoveto(int, int); +static void tmoveato(int x, int y); static void tnew(int, int); static void tnewline(int); static void tputtab(bool); @@ -1211,10 +1213,25 @@ csiparse(void) { } } +/* for absolute user moves, when decom is set */ +void +tmoveato(int x, int y) { + tmoveto(x, y + ((term.c.state & CURSOR_ORIGIN) ? term.top: 0)); +} + void tmoveto(int x, int y) { + int miny, maxy; + + if(term.c.state & CURSOR_ORIGIN) { + miny = term.top; + maxy = term.bot; + } else { + miny = 0; + maxy = term.row - 1; + } LIMIT(x, 0, term.col-1); - LIMIT(y, 0, term.row-1); + LIMIT(y, miny, maxy); term.c.state &= ~CURSOR_WRAPNEXT; term.c.x = x; term.c.y = y; @@ -1456,7 +1473,9 @@ tsetmode(bool priv, bool set, int *args, int narg) { if(mode != term.mode) redraw(); break; - case 6: /* XXX: DECOM -- Origin */ + case 6: /* DECOM -- Origin */ + MODBIT(term.c.state, set, CURSOR_ORIGIN); + tmoveato(0, 0); break; case 7: /* DECAWM -- Auto wrap */ MODBIT(term.mode, set, MODE_WRAP); @@ -1593,7 +1612,7 @@ csihandle(void) { case 'f': /* HVP */ DEFAULT(csiescseq.arg[0], 1); DEFAULT(csiescseq.arg[1], 1); - tmoveto(csiescseq.arg[1]-1, csiescseq.arg[0]-1); + tmoveato(csiescseq.arg[1]-1, csiescseq.arg[0]-1); break; case 'I': /* CHT -- Cursor Forward Tabulation <n> tab stops */ DEFAULT(csiescseq.arg[0], 1); @@ -1667,7 +1686,7 @@ csihandle(void) { break; case 'd': /* VPA -- Move to <row> */ DEFAULT(csiescseq.arg[0], 1); - tmoveto(term.c.x, csiescseq.arg[0]-1); + tmoveato(term.c.x, csiescseq.arg[0]-1); break; case 'h': /* SM -- Set terminal mode */ tsetmode(csiescseq.priv, 1, csiescseq.arg, csiescseq.narg); @@ -1682,7 +1701,7 @@ csihandle(void) { DEFAULT(csiescseq.arg[0], 1); DEFAULT(csiescseq.arg[1], term.row); tsetscroll(csiescseq.arg[0]-1, csiescseq.arg[1]-1); - tmoveto(0, 0); + tmoveato(0, 0); } break; case 's': /* DECSC -- Save cursor position (ANSI.SYS) */ @@ -2119,10 +2138,10 @@ tresize(int col, int row) { /* update terminal size */ term.col = col; term.row = row; - /* make use of the LIMIT in tmoveto */ - tmoveto(term.c.x, term.c.y); /* reset scrolling region */ tsetscroll(0, row-1); + /* make use of the LIMIT in tmoveto */ + tmoveto(term.c.x, term.c.y); return (slide > 0); } |