diff options
Diffstat (limited to 'st.c')
| -rw-r--r-- | st.c | 64 |
1 files changed, 38 insertions, 26 deletions
@@ -3,6 +3,7 @@ #include <ctype.h> #include <errno.h> #include <fcntl.h> +#include <limits.h> #include <locale.h> #include <stdarg.h> #include <stdio.h> @@ -24,6 +25,7 @@ /* Arbitrary sizes */ #define ESCSIZ 256 #define ESCARG 16 +#define MAXDRAWBUF 1024 #define SERRNO strerror(errno) #define MIN(a, b) ((a) < (b) ? (a) : (b)) @@ -32,6 +34,7 @@ #define DEFAULT(a, b) (a) = (a) ? (a) : (b) #define BETWEEN(x, a, b) ((a) <= (x) && (x) <= (b)) #define LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x) +#define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || (a).bg != (b).bg) /* Attribute, Cursor, Character state, Terminal mode, Screen draw mode */ enum { ATnone=0 , ATreverse=1 , ATunderline=2, ATbold=4 }; @@ -934,6 +937,23 @@ xinit(void) { } void +xdraws (char *s, Glyph base, int x, int y, int len) { + unsigned long xfg, xbg; + int winx = x*xw.cw, winy = y*xw.ch + dc.font->ascent, width = len*xw.cw; + if(base.mode & ATreverse) + xfg = dc.col[base.bg], xbg = dc.col[base.fg]; + else + xfg = dc.col[base.fg], xbg = dc.col[base.bg]; + + XSetBackground(xw.dis, dc.gc, xbg); + XSetForeground(xw.dis, dc.gc, xfg); + XDrawImageString(xw.dis, xw.win, dc.gc, winx, winy, s, len); + + if(base.mode & ATunderline) + XDrawLine(xw.dis, xw.win, dc.gc, winx, winy+1, winx+width-1, winy+1); +} + +void xdrawc(int x, int y, Glyph g) { XRectangle r = { x * xw.cw, y * xw.ch, xw.cw, xw.ch }; unsigned long xfg, xbg; @@ -944,18 +964,9 @@ xdrawc(int x, int y, Glyph g) { else xfg = dc.col[g.fg], xbg = dc.col[g.bg]; /* background */ - XSetForeground(xw.dis, dc.gc, xbg); - XFillRectangles(xw.dis, xw.win, dc.gc, &r, 1); - /* string */ + XSetBackground(xw.dis, dc.gc, xbg); XSetForeground(xw.dis, dc.gc, xfg); - XDrawString(xw.dis, xw.win, dc.gc, r.x, r.y+dc.font->ascent, &(g.c), 1); - if(g.mode & ATbold) /* XXX: bold hack (draw again at x+1) */ - XDrawString(xw.dis, xw.win, dc.gc, r.x+1, r.y+dc.font->ascent, &(g.c), 1); - /* underline */ - if(g.mode & ATunderline) { - r.y += dc.font->ascent + 1; - XDrawLine(xw.dis, xw.win, dc.gc, r.x, r.y, r.x+r.width-1, r.y); - } + XDrawImageString(xw.dis, xw.win, dc.gc, r.x, r.y+dc.font->ascent, &g.c, 1); } void @@ -983,25 +994,26 @@ xcursor(int mode) { void draw(int redraw_all) { - int x, y; - int changed, set; - - if(redraw_all) - XClearWindow(xw.dis, xw.win); - - /* XXX: drawing could be optimised */ + int i, x, y, ox; + Glyph base, new; + char buf[MAXDRAWBUF]; + for(y = 0; y < term.row; y++) { + base = term.line[y][0]; + i = ox = 0; for(x = 0; x < term.col; x++) { - changed = term.line[y][x].state & CRupdate; - set = term.line[y][x].state & CRset; - if(redraw_all || changed) { - term.line[y][x].state &= ~CRupdate; - if(set) - xdrawc(x, y, term.line[y][x]); - else - xclear(x, y, x, y); + new = term.line[y][x]; + if(!ATTRCMP(base, new) && i < MAXDRAWBUF) + buf[i++] = new.c; + else { + xdraws(buf, base, ox, y, i); + buf[0] = new.c; + i = 1; + ox = x; + base = new; } } + xdraws(buf, base, ox, y, i); } xcursor(CSdraw); } |