From af72ae1e0a95561a00e0980650b4f2bf32201ba2 Mon Sep 17 00:00:00 2001
From: piaip <piaip@63ad8ddf-47c3-0310-b6dd-a9e9d9715204>
Date: Thu, 10 Jan 2008 06:33:16 +0000
Subject: - terminal: add newwin() - pfterm: fix some bounadry checkings of x
 range

git-svn-id: http://opensvn.csie.org/pttbbs/trunk/pttbbs@3812 63ad8ddf-47c3-0310-b6dd-a9e9d9715204
---
 include/proto.h |  2 ++
 mbbsd/pfterm.c  | 53 +++++++++++++++++++++++++++++++++++++++++++++--------
 mbbsd/screen.c  | 15 +++++++++++++++
 3 files changed, 62 insertions(+), 8 deletions(-)

diff --git a/include/proto.h b/include/proto.h
index 28f1135b..8ac63aa5 100644
--- a/include/proto.h
+++ b/include/proto.h
@@ -580,6 +580,7 @@ void clear	(void);
 void clrtoeol	(void);
 void clrtobot	(void);
 void clrtoln	(int ln);
+void newwin	(int nlines, int ncols, int y, int x);
 void refresh	(void);
 void doupdate	(void);
 void redrawwin	(void);
@@ -592,6 +593,7 @@ void scr_restore(const screen_backup_t *buf);
 // non-curses
 void outc(unsigned char ch);
 void outs(const char *s);
+void outns(const char *str, int n);
 void outstr(const char *str); // prepare and print a complete non-ANSI string.
 int  inansistr(char *str, int n);
 void move_ansi(int y, int x);
diff --git a/mbbsd/pfterm.c b/mbbsd/pfterm.c
index 8d5184e5..88a2b2b4 100644
--- a/mbbsd/pfterm.c
+++ b/mbbsd/pfterm.c
@@ -314,6 +314,9 @@ void	clrtohome	(void);
 void	clrscr		(void);	// clear and keep cursor untouched
 void	clrregion	(int r1, int r2); // clear [r1,r2], bi-directional.
 
+// window control
+void	newwin		(int nlines, int ncols, int y, int x);
+
 // flushing
 void	refresh		(void); // optimized refresh
 void	doupdate	(void); // optimized refresh, ignore input queue
@@ -515,6 +518,9 @@ resizeterm(int rows, int cols)
 		redrawwin();
 	}
 
+	ft.x = ranged(ft.x, 0, ft.cols-1);
+	ft.y = ranged(ft.y, 0, ft.rows-1);
+
 	return dirty;
 }
 
@@ -569,6 +575,7 @@ clear(void)
 void 
 clrtoeol(void)
 {
+	ft.x = ranged(ft.x, 0, ft.cols-1);
 	memset(FTPC, FTCHAR_ERASE,	ft.cols - ft.x);
 	memset(FTPA, FTATTR_ERASE,	ft.cols - ft.x);
 	fterm_markdirty();
@@ -577,6 +584,7 @@ clrtoeol(void)
 void 
 clrtobeg(void)
 {
+	ft.x = ranged(ft.x, 0, ft.cols-1);
 	memset(FTCROW, FTCHAR_ERASE, ft.x+1);
 	memset(FTAROW, FTATTR_ERASE, ft.x+1);
 	fterm_markdirty();
@@ -634,6 +642,32 @@ clrtohome(void)
 	clrregion(ft.y-1, 0);
 }
 
+void newwin	(int nlines, int ncols, int y, int x)
+{
+	int oy, ox;
+	// check range
+	
+	x = ranged(x, 0, ft.cols-1);
+	y = ranged(y, 0, ft.rows-1);
+	ncols  = ranged(x+ncols-1,  x, ft.cols-1);
+	nlines = ranged(y+nlines-1, y, ft.rows-1);
+	ncols = ncols - x + 1;
+	nlines= nlines- y + 1;
+
+	if (nlines <= 0 || ncols <= 0)
+		return;
+	getyx(&oy, &ox);
+
+    while (nlines-- > 0)
+    {
+		move(y++, x);
+		// use prepare_str to erase character
+		fterm_prepare_str(ncols);
+		// memset(FTAMAP[y]+x, ft.attr, ncols);
+		// memset(FTCMAP[y]+x, FTCHAR_ERASE, ncols);
+    }
+	move(oy, ox);
+}
 
 // dirty and flushing
 
@@ -1126,7 +1160,7 @@ outc(unsigned char c)
 	} 
 	else if (c == '\b')
 	{
-		ft.x = ranged(ft.x-1, 0, ft.rows-1);
+		ft.x = ranged(ft.x-1, 0, ft.cols-1);
 	}
 	else if (c == '\r' || c == '\n')
 	{
@@ -1170,6 +1204,9 @@ outc(unsigned char c)
 #endif // FTATTR_TRANSPARENT
 		FTA = ft.attr;
 		ft.x ++;
+
+		// we must carefully deal x here.
+		ft.x = ranged(ft.x, 0, ft.cols-1);
 	}
 }
 
@@ -1345,14 +1382,16 @@ fterm_prepare_str(int len)
 
 	x = ft.x;
 	// fix start and end
-	if(sdbcs == 2) // TAIL, remove word 
+	if(sdbcs == 2 && x > 0) // TAIL, remove word 
 		x--;
-	if (dbcs == 1) // LEAD, remove word
+	if (dbcs == 1 && len < ft.cols) // LEAD, remove word
 		len ++;
-	len = ranged(len, 0, ft.rows);
+	len = ranged(len, 0, ft.cols);
 	len -= x;
+	if (len < 0) len = 0;
 
 	memset(FTCROW + x, FTCHAR_ERASE, len);
+	memset(FTAROW + x, ft.attr, len);
 	return len;
 }
 
@@ -2145,10 +2184,8 @@ scr_restore(const screen_backup_t *psb)
 	c = ranged(c, 0, psb->col);
 	r = ranged(r, 0, psb->row);
 
-	ft.y = psb->y;
-	ft.x = psb->x;
-	ft.y = ranged(ft.y, 0, ft.rows-1);
-	ft.x = ranged(ft.x, 0, ft.cols-1);
+	ft.y = ranged(psb->y, 0, ft.rows-1);
+	ft.x = ranged(psb->x, 0, ft.cols-1);
 	clrscr();
 
 	for (y = 0; y < r; y++)
diff --git a/mbbsd/screen.c b/mbbsd/screen.c
index 08fae0b4..1f015acc 100644
--- a/mbbsd/screen.c
+++ b/mbbsd/screen.c
@@ -365,6 +365,21 @@ clrtoeol(void)
     slp->len = cur_col;
 }
 
+
+void newwin	(int nlines, int ncols, int y, int x)
+{
+    int i=0, y, x;
+    getyx(&y, &x);
+
+    while (nlines-- > 0)
+    {
+	move_ansi(y++, x);
+	for (i = 0; i < ncols; i++)
+	    outc(' ');
+    }
+    move(y, x);
+}
+
 /**
  * 從目前的行數(scr_ln) clear 到第 line 行
  */
-- 
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