st

Personal fork of ST from suckless.org; st is a simple terminal implementation for X.
git clone git://git.swab.dev/st.git
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commit b8ffa1d7e9cffda8bd8cc7f4ccf612201a617b34
parent d5f4554431f82424af40600ed6835672ab8e44ae
Author: Aurélien Aptel <aurelien.aptel@gmail.com>
Date:   Wed, 17 Jun 2009 02:58:40 +0200

fixed the scrolling bug and cleaned some stuff.

Diffstat:
Mst.c | 129++++++++++++++++++++++++++++++++++++++++++-------------------------------------
1 file changed, 68 insertions(+), 61 deletions(-)

diff --git a/st.c b/st.c @@ -37,7 +37,7 @@ enum { ATnone=0 , ATreverse=1 , ATunderline=2, ATbold=4 }; enum { CSup, CSdown, CSright, CSleft, CShide, CSdraw, CSwrap, CSsave, CSload }; enum { CRset=1, CRupdate=2 }; -enum { TMwrap=1, TMinsert=2, TMaltcharset }; +enum { TMwrap=1, TMinsert=2 }; enum { SCupdate, SCredraw }; typedef int Color; @@ -154,6 +154,7 @@ void xdrawc(int, int, Glyph); void xinit(void); void xscroll(void); +void cursor(int); /* Globals */ DC dc; @@ -201,7 +202,6 @@ sigchld(int a) { exit(EXIT_FAILURE); } - void ttynew(void) { int m, s; @@ -328,21 +328,19 @@ void tscroll(void) { Line temp = term.line[term.top]; int i; - + /* X stuff _before_ the line swapping (results in wrong line index) */ + xscroll(); for(i = term.top; i < term.bot; i++) term.line[i] = term.line[i+1]; memset(temp, 0, sizeof(Glyph) * term.col); term.line[term.bot] = temp; - xscroll(); } void tnewline(void) { int y = term.c.y + 1; - - if(y > term.bot) { + if(y > term.bot) tscroll(), y = term.bot; - } tmoveto(0, y); } @@ -477,6 +475,13 @@ tinsertblank(int n) { } void +tsetlinestate(int n, int state) { + int i; + for(i = 0; i < term.col; i++) + term.line[n][i].state |= state; +} + +void tinsertblankline (int n) { int i; Line blank; @@ -497,10 +502,11 @@ tinsertblankline (int n) { term.line[i-n] = blank; /* blank it */ memset(blank, 0, term.col * sizeof(Glyph)); + tsetlinestate(i, CRupdate); + tsetlinestate(i-n, CRupdate); } } - void tdeleteline(int n) { int i; @@ -522,6 +528,8 @@ tdeleteline(int n) { term.line[i+n] = blank; /* blank it */ memset(blank, 0, term.col * sizeof(Glyph)); + tsetlinestate(i, CRupdate); + tsetlinestate(i-n, CRupdate); } } @@ -529,48 +537,48 @@ void tsetattr(int *attr, int l) { int i; - for(i = 0; i < l; i++) { - switch(attr[i]) { - case 0: - memset(&term.c.attr, 0, sizeof(term.c.attr)); - term.c.attr.fg = DefaultFG; - term.c.attr.bg = DefaultBG; - break; - case 1: - term.c.attr.mode |= ATbold; - break; - case 4: - term.c.attr.mode |= ATunderline; - break; - case 7: - term.c.attr.mode |= ATreverse; - break; - case 8: - term.c.hidden = CShide; - break; - case 22: - term.c.attr.mode &= ~ATbold; - break; - case 24: - term.c.attr.mode &= ~ATunderline; - break; - case 27: - term.c.attr.mode &= ~ATreverse; - break; - case 39: - term.c.attr.fg = DefaultFG; - break; - case 49: - term.c.attr.fg = DefaultBG; - break; - default: - if(BETWEEN(attr[i], 30, 37)) - term.c.attr.fg = attr[i] - 30; - else if(BETWEEN(attr[i], 40, 47)) - term.c.attr.bg = attr[i] - 40; - break; - } + for(i = 0; i < l; i++) { + switch(attr[i]) { + case 0: + memset(&term.c.attr, 0, sizeof(term.c.attr)); + term.c.attr.fg = DefaultFG; + term.c.attr.bg = DefaultBG; + break; + case 1: + term.c.attr.mode |= ATbold; + break; + case 4: + term.c.attr.mode |= ATunderline; + break; + case 7: + term.c.attr.mode |= ATreverse; + break; + case 8: + term.c.hidden = CShide; + break; + case 22: + term.c.attr.mode &= ~ATbold; + break; + case 24: + term.c.attr.mode &= ~ATunderline; + break; + case 27: + term.c.attr.mode &= ~ATreverse; + break; + case 39: + term.c.attr.fg = DefaultFG; + break; + case 49: + term.c.attr.fg = DefaultBG; + break; + default: + if(BETWEEN(attr[i], 30, 37)) + term.c.attr.fg = attr[i] - 30; + else if(BETWEEN(attr[i], 40, 47)) + term.c.attr.bg = attr[i] - 40; + break; } + } } void @@ -588,9 +596,8 @@ tsetscroll(int t, int b) { term.bot = b; } - void -eschandle(void) { +eschandle(void) { switch(escseq.pre) { default: goto unknown_seq; @@ -846,7 +853,6 @@ xgetcol(const char *s) { return color.pixel; } - void xclear(int x1, int y1, int x2, int y2) { XClearArea(xw.dis, xw.win, @@ -855,7 +861,6 @@ xclear(int x1, int y1, int x2, int y2) { False); } - void xscroll(void) { int srcy = (term.top+1) * xw.ch; @@ -867,9 +872,6 @@ xscroll(void) { xclear(0, term.bot, term.col-1, term.bot); } - - - void xinit(void) { XGCValues values; @@ -963,14 +965,15 @@ xcursor(int mode) { /* remove the old cursor */ if(term.line[oldy][oldx].state & CRset) xdrawc(oldx, oldy, term.line[oldy][oldx]); - else xclear(oldx, oldy, oldx, oldy); /* XXX: maybe a bug */ - if(mode == CSdraw && !term.c.hidden) { + else + xclear(oldx, oldy, oldx, oldy); + /* draw the new one */ + if(mode == CSdraw) { xdrawc(term.c.x, term.c.y, g); oldx = term.c.x, oldy = term.c.y; } } - void draw(int redraw_all) { int x, y; @@ -978,14 +981,18 @@ draw(int redraw_all) { if(redraw_all) XClearWindow(xw.dis, xw.win); + /* XXX: drawing could be optimised */ for(y = 0; y < term.row; y++) { for(x = 0; x < term.col; x++) { changed = term.line[y][x].state & CRupdate; set = term.line[y][x].state & CRset; - if((changed && set) || (redraw_all && set)) { + if(redraw_all || changed) { term.line[y][x].state &= ~CRupdate; - xdrawc(x, y, term.line[y][x]); + if(set) + xdrawc(x, y, term.line[y][x]); + else + xclear(x, y, x, y); } } }