Refactoring screen.c and adding function GetCurrentLine().

Adding redoscr() and use it in gomoku to reduce refresh size.


git-svn-id: http://opensvn.csie.org/pttbbs/trunk/pttbbs@2418 63ad8ddf-47c3-0310-b6dd-a9e9d9715204

2 files changed, 40 insertions, 12 deletions

diff --git a/mbbsd/gomo.c b/mbbsd/gomo.c
index a7a4fd8e..b1bef205 100644
--- a/mbbsd/gomo.c
+++ b/mbbsd/gomo.c
@@ -176,6 +176,7 @@ HO_undo(char ku[][BRDSIZ], Horder_t * mv)
     n2 = (mv->y == 14) ? 0 : (mv->y == 0) ? 2 : 1;
     loc = 2 * (n2 * 3 + n1);
     prints("%.2s", str + loc);
+    redoln();
 }
 
 static void
@@ -364,7 +365,7 @@ gomoku(int fd)
 	if (scr_need_redraw){
 	    move(13, 40);
 	    outs(my->turn ? "輪到自己下了!" : "等待對方下子..");
-	    redoscr();
+	    redoln();
 	    scr_need_redraw = 0;
 	}
 	if (lastcount != tick - now) {
@@ -490,6 +491,7 @@ gomoku(int fd)
 		bell();
 		BGOTO(mv.x, mv.y);
 		outs(bw_chess[he - 1]);
+		redoln();
 
 		if (win) {
 		    outmsg(win == 1 ? "對方贏了!" : "對方禁手");
@@ -518,6 +520,7 @@ gomoku(int fd)
 		HO_add(&mv);
 		BGOTO(mv.x, mv.y);
 		outs(bw_chess[me - 1]);
+		redoln();
 		win = chkmv(ku, &mv, me, me == BBLACK);
 		ku[(int)mv.x][(int)mv.y] = me;
 		mylasttick = tick;
diff --git a/mbbsd/screen.c b/mbbsd/screen.c
index 0e3e2af0..3232b1af 100644
--- a/mbbsd/screen.c
+++ b/mbbsd/screen.c
@@ -39,6 +39,14 @@ getyx(int *y, int *x)
     *x = cur_col;
 }
 
+static inline
+screenline_t* GetCurrentLine(){
+    register int i = cur_ln + roll;
+    if(i >= scr_lns)
+	i -= scr_lns;
+    return &big_picture[i];
+}
+
 static void
 rel_move(int was_col, int was_ln, int new_col, int new_ln)
 {
@@ -130,6 +138,30 @@ redoscr()
     oflush();
 }
 
+void redoln()
+{
+    screenline_t *slp = GetCurrentLine();
+    int len, mode;
+
+    len = slp->len;
+    rel_move(tc_col, tc_line, 0, cur_ln);
+    if (len)
+    {    
+	if ((mode = slp->mode) & STANDOUT)
+	    standoutput((char*)slp->data, 0, len, slp->sso, slp->eso);
+	else
+	    output((char*)slp->data, len);
+
+	slp->mode = mode & ~(MODIFIED);
+
+	slp->oldlen = tc_col = len;
+    }
+    else
+	clrtoeol();
+    rel_move(tc_col, tc_line, cur_col, cur_ln);
+    oflush();
+}
+
 void
 refresh()
 {
@@ -220,13 +252,10 @@ clear()
 void
 clrtoeol()
 {
-    register screenline_t *slp;
+    register screenline_t *slp = GetCurrentLine();
     register int    ln;
 
     standing = NA;
-    if ((ln = cur_ln + roll) >= scr_lns)
-	ln -= scr_lns;
-    slp = &big_picture[ln];
     if (cur_col <= slp->sso)
 	slp->mode &= ~STANDOUT;
 
@@ -272,13 +301,9 @@ clrtobot()
 void
 outc(unsigned char c)
 {
-    register screenline_t *slp;
+    register screenline_t *slp = GetCurrentLine();
     register int    i;
 
-    if ((i = cur_ln + roll) >= scr_lns)
-	i -= scr_lns;
-    slp = &big_picture[i];
-
     if (c == '\n' || c == '\r') {
 	if (standing) {
 	    slp->eso = MAX(slp->eso, cur_col);
@@ -440,7 +465,7 @@ standout()
     if (!standing && strtstandoutlen) {
 	register screenline_t *slp;
 
-	slp = &big_picture[((cur_ln + roll) % scr_lns)];
+	slp = GetCurrentLine();
 	standing = YEA;
 	slp->sso = slp->eso = cur_col;
 	slp->mode |= STANDOUT;
@@ -453,7 +478,7 @@ standend()
     if (standing && strtstandoutlen) {
 	register screenline_t *slp;
 
-	slp = &big_picture[((cur_ln + roll) % scr_lns)];
+	slp = GetCurrentLine();
 	standing = NA;
 	slp->eso = MAX(slp->eso, cur_col);
     }