diff options
| -rw-r--r-- | st.c | 30 |
1 files changed, 30 insertions, 0 deletions
@@ -237,6 +237,7 @@ static void selinit(void); static inline int selected(int, int); static void selcopy(void); static void selpaste(); +static void selscroll(int, int); static int utf8decode(char *, long *); static int utf8encode(long *, char *); @@ -806,6 +807,8 @@ tscrolldown(int orig, int n) { term.line[i] = term.line[i-n]; term.line[i-n] = temp; } + + selscroll(orig, n); } void @@ -821,6 +824,31 @@ tscrollup(int orig, int n) { term.line[i] = term.line[i+n]; term.line[i+n] = temp; } + + selscroll(orig, -n); +} + +void +selscroll(int orig, int n) { + if(sel.bx == -1) + return; + + if(BETWEEN(sel.by, orig, term.bot) || BETWEEN(sel.ey, orig, term.bot)) { + if((sel.by += n) > term.bot || (sel.ey += n) < term.top) { + sel.bx = -1; + return; + } + if(sel.by < term.top) { + sel.by = term.top; + sel.bx = 0; + } + if(sel.ey > term.bot) { + sel.ey = term.bot; + sel.ex = term.col; + } + sel.b.y = sel.by, sel.b.x = sel.bx; + sel.e.y = sel.ey, sel.e.x = sel.ex; + } } void @@ -1077,6 +1105,7 @@ csihandle(void) { break; /* XXX: (CSI n I) CHT -- Cursor Forward Tabulation <n> tab stops */ case 'J': /* ED -- Clear screen */ + sel.bx = -1; switch(escseq.arg[0]) { case 0: /* below */ tclearregion(term.c.x, term.c.y, term.col-1, term.c.y); @@ -1382,6 +1411,7 @@ tputc(char *c) { } } } else { + if(sel.bx != -1 && BETWEEN(term.c.y, sel.by, sel.ey)) sel.bx = -1; switch(ascii) { case '\t': tputtab(); |