2 files changed, 126 insertions, 50 deletions

diff --git a/config.h b/config.h
index a7fc58c..f881571 100644
--- a/config.h
+++ b/config.h
@@ -1,7 +1,8 @@
 #define SHELL "/bin/bash"
 #define TAB    8
 
-#define FONT "fixed"
+#define FONT "6x13"
+#define BOLDFONT FONT"bold"
 #define BORDER 3
 #define LINESPACE 0 /* additional pixel between each line */
 
diff --git a/st.c b/st.c
index 8bbb1a5..f288f2a 100644
--- a/st.c
+++ b/st.c
@@ -57,7 +57,6 @@ typedef Glyph* Line;
 
 typedef struct {
         Glyph attr;  /* current char attributes */
-        char hidden;
         int x;
         int y;
 } TCursor;
@@ -79,6 +78,7 @@ typedef struct {
         int col;    /* nb col */
         Line* line; /* screen */
         TCursor c;  /* cursor */
+        char hidec;
         int top;    /* top    scroll limit */
         int bot;    /* bottom scroll limit */
         int mode;   /* terminal mode flags */
@@ -109,6 +109,7 @@ typedef struct {
 typedef struct {
         unsigned long col[LEN(colorname)];
         XFontStruct* font;
+        XFontStruct* bfont;
         GC gc;
 } DC;
 
@@ -135,8 +136,11 @@ static void tnew(int, int);
 static void tnewline(void);
 static void tputc(char);
 static void tputs(char*, int);
+static void treset(void);
 static void tresize(int, int);
 static void tscroll(void);
+static void tscrollup(int);
+static void tscrolldown(int);
 static void tsetattr(int*, int);
 static void tsetchar(char);
 static void tsetscroll(int, int);
@@ -149,12 +153,11 @@ static void ttywrite(const char *, size_t);
 static unsigned long xgetcol(const char *);
 static void xclear(int, int, int, int);
 static void xcursor(int);
-static void xdrawc(int, int, Glyph);
 static void xinit(void);
 static void xscroll(void);
 
 static void expose(XEvent *);
-static char * kmap(KeySym);
+static char* kmap(KeySym);
 static void kpress(XEvent *);
 static void resize(XEvent *);
 
@@ -313,6 +316,18 @@ tcursor(int mode) {
 }
 
 void
+treset(void) {
+        term.c.attr.mode = ATTR_NULL;
+        term.c.attr.fg = DefaultFG;
+        term.c.attr.bg = DefaultBG;
+        term.c.x = term.c.y = 0;
+        term.hidec = 0;
+        term.top = 0, term.bot = term.row - 1;
+        term.mode = MODE_WRAP;
+        tclearregion(0, 0, term.col-1, term.row-1);
+}
+
+void
 tnew(int col, int row) {   /* screen size */
         term.row = row, term.col = col;
         term.top = 0, term.bot = term.row - 1;
@@ -323,17 +338,19 @@ tnew(int col, int row) {   /* screen size */
         term.c.attr.fg = DefaultFG;
         term.c.attr.bg = DefaultBG;
         term.c.x = term.c.y = 0;
-        term.c.hidden = 0;
+        term.hidec = 0;
         /* allocate screen */
         term.line = calloc(term.row, sizeof(Line));
         for(row = 0 ; row < term.row; row++)
                 term.line[row] = calloc(term.col, sizeof(Glyph));
 }
 
+/* TODO: Replace with scrollup/scolldown */
 void
 tscroll(void) {
         Line temp = term.line[term.top];
         int i;
+        /* No dirty flag to set because of xscroll */
         /* X stuff _before_ the line swapping (results in wrong line index) */
         xscroll();
         for(i = term.top; i < term.bot; i++)
@@ -343,6 +360,41 @@ tscroll(void) {
 }
 
 void
+tscrolldown (int n) {
+        int i;
+        Line temp;
+        
+        /* TODO: set dirty flag or scroll with some X func */
+        LIMIT(n, 0, term.bot-term.top+1);
+
+        for(i = 0; i < n; i++)
+                memset(term.line[term.bot-i], 0, term.col*sizeof(Glyph));
+        
+        for(i = term.bot; i >= term.top+n; i--) {
+                temp = term.line[i];
+                term.line[i] = term.line[i-n];
+                term.line[i-n] = temp;
+        }
+}
+
+void
+tscrollup (int n) {
+        int i;
+        Line temp;
+        LIMIT(n, 0, term.bot-term.top+1);
+        
+        /* TODO: set dirty flag or scroll with some X func */
+        for(i = 0; i < n; i++)
+                memset(term.line[term.top+i], 0, term.col*sizeof(Glyph));
+        
+         for(i = term.top; i <= term.bot-n; i++) { 
+                 temp = term.line[i];
+                 term.line[i] = term.line[i+n]; 
+                 term.line[i+n] = temp;
+         }
+}
+
+void
 tnewline(void) {
         int y = term.c.y + 1;
         if(y > term.bot)
@@ -420,17 +472,20 @@ tsetchar(char c) {
 
 void
 tclearregion(int x1, int y1, int x2, int y2) {
-        int x, y;
+        int y, temp;
+
+        if(x1 > x2)
+                temp = x1, x1 = x2, x2 = temp;
+        if(y1 > y2)
+                temp = y1, y1 = y2, y2 = temp;
 
         LIMIT(x1, 0, term.col-1);
         LIMIT(x2, 0, term.col-1);
         LIMIT(y1, 0, term.row-1);
         LIMIT(y2, 0, term.row-1);
 
-        /* XXX: could be optimized */
-        for(x = x1; x <= x2; x++)
-                for(y = y1; y <= y2; y++)
-                        memset(&term.line[y][x], 0, sizeof(Glyph));
+        for(y = y1; y <= y2; y++)
+                memset(&term.line[y][x1], 0, sizeof(Glyph)*(x2-x1+1));
 
         xclear(x1, y1, x2, y2);
 }
@@ -542,9 +597,6 @@ tsetattr(int *attr, int l) {
                 case 7: 
                         term.c.attr.mode |= ATTR_REVERSE;       
                         break;
-                case 8:
-                        term.c.hidden = CURSOR_HIDE;
-                        break;
                 case 22: 
                         term.c.attr.mode &= ~ATTR_BOLD;  
                         break;
@@ -565,6 +617,8 @@ tsetattr(int *attr, int l) {
                                 term.c.attr.fg = attr[i] - 30;
                         else if(BETWEEN(attr[i], 40, 47))
                                 term.c.attr.bg = attr[i] - 40;
+                        else 
+                                fprintf(stderr, "erresc: gfx attr %d unkown\n", attr[i]); 
                         break;
                 }
         }
@@ -590,7 +644,7 @@ csihandle(void) {
         switch(escseq.mode) {
         default:
         unknown:
-                printf("erresc: unknown sequence -- ");
+                printf("erresc: unknown csi ");
                 csidump();
                 /* die(""); */
                 break;
@@ -665,7 +719,14 @@ csihandle(void) {
                         break;
                 }
                 break;
-        case 'S': /* XXX: SU -- Scroll <n> line up (faked) */ 
+        case 'S': /* SU -- Scroll <n> line up */
+                DEFAULT(escseq.arg[0], 1);
+                tscrollup(escseq.arg[0]);
+                break;
+        case 'T': /* SD -- Scroll <n> line down */
+                DEFAULT(escseq.arg[0], 1);
+                tscrolldown(escseq.arg[0]);
+                break;
         case 'L': /* IL -- Insert <n> blank lines */
                 DEFAULT(escseq.arg[0], 1);
                 tinsertblankline(escseq.arg[0]);
@@ -682,7 +743,7 @@ csihandle(void) {
                         case 12: /* att610 -- Stop blinking cursor (IGNORED) */
                                 break;
                         case 25:
-                                term.c.hidden = 1;
+                                term.hidec = 1;
                                 break;
                         case 1048: /* XXX: no alt. screen to erase/save */
                         case 1049:
@@ -731,7 +792,7 @@ csihandle(void) {
                         case 12: /* att610 -- Start blinking cursor (IGNORED) */
                                 break;
                         case 25:
-                                term.c.hidden = 0;
+                                term.hidec = 0;
                                 break;
                         case 1048: 
                         case 1049: /* XXX: no alt. screen to erase/save */
@@ -866,11 +927,15 @@ tputc(char c) {
                                 break;
                         case 'M': /* RI -- Reverse index */
                                 if(term.c.y == term.top)
-                                        tinsertblankline(1);
+                                        tscrolldown(1);
                                 else
                                         tmoveto(term.c.x, term.c.y-1);
                                 term.esc = 0;
                                 break;
+                        case 'c': /* RIS -- Reset to inital state */
+                                treset();
+                                term.esc = 0;
+                                break;
                         case '=': /* DECPAM */
                                 term.mode |= MODE_APPKEYPAD;
                                 term.esc = 0;
@@ -888,7 +953,7 @@ tputc(char c) {
                                 term.esc = 0;
                                 break;
                         default:
-                                fprintf(stderr, "erresc: unknown sequence ESC %02X '%c'\n", c, isprint(c)?c:'.');
+                                fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n", c, isprint(c)?c:'.');
                                 term.esc = 0;
                         }
                 }
@@ -991,8 +1056,6 @@ xscroll(void) {
 
 void
 xinit(void) {
-        XGCValues values;
-        unsigned long valuemask;
         XClassHint chint;
         XWMHints wmhint;
         XSizeHints shint;
@@ -1005,9 +1068,10 @@ xinit(void) {
                 die("Can't open display\n");
         
         /* font */
-        if(!(dc.font = XLoadQueryFont(xw.dis, FONT)))
-                die("Can't load font %s\n", FONT);
+        if(!(dc.font = XLoadQueryFont(xw.dis, FONT)) || !(dc.bfont = XLoadQueryFont(xw.dis, BOLDFONT)))
+                die("Can't load font %s\n", dc.font ? BOLDFONT : FONT);
 
+        /* XXX: Assuming same size for bold font */
         xw.cw = dc.font->max_bounds.rbearing - dc.font->min_bounds.lbearing;
         xw.ch = dc.font->ascent + dc.font->descent + LINESPACE;
 
@@ -1027,10 +1091,7 @@ xinit(void) {
                         dc.col[DefaultBG],
                         dc.col[DefaultBG]);
         /* gc */
-        values.foreground = XWhitePixel(xw.dis, xw.scr);
-        values.font = dc.font->fid;
-        valuemask = GCForeground | GCFont;
-        dc.gc = XCreateGC(xw.dis, xw.win, valuemask, &values);
+        dc.gc = XCreateGC(xw.dis, xw.win, 0, NULL);
         XMapWindow(xw.dis, xw.win);
         /* wm stuff */
         chint.res_name = TNAME, chint.res_class = TNAME;
@@ -1060,7 +1121,8 @@ xdraws(char *s, Glyph base, int x, int y, int len) {
         if(base.mode & ATTR_GFX)
                 for(i = 0; i < len; i++)
                         s[i] = gfx[s[i]];
-        
+
+        XSetFont(xw.dis, dc.gc, base.mode & ATTR_BOLD ? dc.bfont->fid : dc.font->fid);  
         XDrawImageString(xw.dis, xw.win, dc.gc, winx, winy, s, len);
         
         if(base.mode & ATTR_UNDERLINE)
@@ -1068,22 +1130,6 @@ xdraws(char *s, Glyph base, int x, int y, int len) {
 }
 
 void
-xdrawc(int x, int y, Glyph g) {
-        XRectangle r = { x * xw.cw, y * xw.ch, xw.cw, xw.ch };
-        unsigned long xfg, xbg;
-
-        /* reverse video */
-        if(g.mode & ATTR_REVERSE)
-                xfg = dc.col[g.bg], xbg = dc.col[g.fg];
-        else
-                xfg = dc.col[g.fg], xbg = dc.col[g.bg];
-        /* background */
-        XSetBackground(xw.dis, dc.gc, xbg);
-        XSetForeground(xw.dis, dc.gc, xfg);
-        XDrawImageString(xw.dis, xw.win, dc.gc, r.x, r.y+dc.font->ascent, &g.c, 1);
-}
-
-void
 xcursor(int mode) {
         static int oldx = 0;
         static int oldy = 0;
@@ -1094,24 +1140,54 @@ xcursor(int mode) {
         
         if(term.line[term.c.y][term.c.x].state & GLYPH_SET)
                 g.c = term.line[term.c.y][term.c.x].c;
+
         /* remove the old cursor */
         if(term.line[oldy][oldx].state & GLYPH_SET)
-                xdrawc(oldx, oldy, term.line[oldy][oldx]);
-        else 
+                xdraws(&term.line[oldy][oldx].c, term.line[oldy][oldx], oldx, oldy, 1);
+        else
                 xclear(oldx, oldy, oldx, oldy);
+        
         /* draw the new one */
         if(mode == CURSOR_DRAW) {
-                xdrawc(term.c.x, term.c.y, g);
+                xdraws(&g.c, g, term.c.x, term.c.y, 1);
                 oldx = term.c.x, oldy = term.c.y;
         }
 }
 
+
+#ifdef DEBUG
+/* basic drawing routines */
+void
+xdrawc(int x, int y, Glyph g) {
+        XRectangle r = { x * xw.cw, y * xw.ch, xw.cw, xw.ch };
+        XSetBackground(xw.dis, dc.gc, dc.col[g.bg]);
+        XSetForeground(xw.dis, dc.gc, dc.col[g.fg]);
+        XSetFont(xw.dis, dc.gc, g.mode & ATTR_BOLD ? dc.bfont->fid : dc.font->fid);
+        XDrawImageString(xw.dis, xw.win, dc.gc, r.x, r.y+dc.font->ascent, &g.c, 1);
+}
+
+void
+draw_(int dummy) {
+        int x, y;
+
+        xclear(0, 0, term.col-1, term.row-1);
+        for(y = 0; y < term.row; y++)
+                for(x = 0; x < term.col; x++)
+                        if(term.line[y][x].state & GLYPH_SET)
+                                xdrawc(x, y, term.line[y][x]);
+
+        if(!term.hidec)
+                xcursor(CURSOR_DRAW);
+}
+#endif
+
 void
 draw(int redraw_all) {
         int i, x, y, ox;
         Glyph base, new;
         char buf[DRAW_BUF_SIZ];
         
+        /* XXX: optimize with GLYPH_DIRTY hint */
         for(y = 0; y < term.row; y++) {
                 base = term.line[y][0];
                 i = ox = 0;
@@ -1129,8 +1205,7 @@ draw(int redraw_all) {
                 }
                 xdraws(buf, base, ox, y, i);
         }
-        if(!term.c.hidden)
-                xcursor(CURSOR_DRAW);
+        xcursor(term.hidec ? CURSOR_HIDE : CURSOR_DRAW);
 }
 
 void
@@ -1179,7 +1254,7 @@ kpress(XEvent *ev) {
                         break;
                 case XK_Insert:
                         if(shift)
-                                /* XXX: paste X clipboard */;
+                                draw(1), puts("draw!")/* XXX: paste X clipboard */;
                         break;
                 default:
                         fprintf(stderr, "errkey: %d\n", (int)ksym);