st

My build of suckless' st.
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commit cf65699a29683bff9d50187c18b160e21a538f48
parent 0a5e5102096d65a3ba8e39ea9b9b0eb89fe30e04
Author: Anselm R Garbe <garbeam@gmail.com>
Date:   Fri, 10 Jul 2009 16:23:11 +0100

we definately need pixmaps for the drawing, currently drawing into the window is painfully slow! much more slower than drawing into a pixmap and mapping that when finished -- several optimisations

Diffstat:
Mconfig.h | 22+++++++++++-----------
Mst.c | 168+++++++++++++++++++++++++++++++++++++------------------------------------------
2 files changed, 89 insertions(+), 101 deletions(-)

diff --git a/config.h b/config.h @@ -6,7 +6,7 @@ #define LINESPACE 1 /* additional pixel between each line */ /* Terminal colors */ -static char* colorname[] = { +static const char *colorname[] = { "black", "red", "green", @@ -26,14 +26,14 @@ static char* colorname[] = { /* special keys */ -static Key key[] = { - { XK_Delete, "\033[3~" }, - { XK_Home, "\033[1~" }, - { XK_End, "\033[4~" }, - { XK_Prior, "\033[5~" }, - { XK_Next, "\033[6~" }, - { XK_Left, "\033[D" }, - { XK_Right, "\033[C" }, - { XK_Up, "\033[A" }, - { XK_Down, "\033[B" }, +static const char *key[] = { + [XK_Delete] = "\033[3~", + [XK_Home] = "\033[1~", + [XK_End] = "\033[4~", + [XK_Prior] = "\033[5~", + [XK_Next] = "\033[6~", + [XK_Left] = "\033[D", + [XK_Right] = "\033[C", + [XK_Up] = "\033[A", + [XK_Down] = "\033[B", }; diff --git a/st.c b/st.c @@ -1,5 +1,5 @@ /* See LICENSE for licence details. */ -#define _XOPEN_SOURCE +#define _XOPEN_SOURCE 600 #include <ctype.h> #include <errno.h> #include <fcntl.h> @@ -107,61 +107,68 @@ typedef struct { GC gc; } DC; -void die(const char *errstr, ...); -void draw(int); -void execsh(void); -void sigchld(int); -char* kmap(KeySym); -void kpress(XKeyEvent *); -void resize(XEvent *); -void run(void); - -int escaddc(char); -int escfinal(char); -void escdump(void); -void eschandle(void); -void escparse(void); -void escreset(void); - -void tclearregion(int, int, int, int); -void tcpos(int); -void tcursor(int); -void tdeletechar(int); -void tdeleteline(int); -void tdump(void); -void tinsertblank(int); -void tinsertblankline(int); -void tmoveto(int, int); -void tnew(int, int); -void tnewline(void); -void tputc(char); -void tputs(char*, int); -void tresize(int, int); -void tscroll(void); -void tsetattr(int*, int); -void tsetchar(char); -void tsetscroll(int, int); - -void ttynew(void); -void ttyread(void); -void ttyresize(int, int); -void ttywrite(char *, size_t); - -unsigned long xgetcol(const char *); -void xclear(int, int, int, int); -void xcursor(int); -void xdrawc(int, int, Glyph); -void xinit(void); -void xscroll(void); +static void die(const char *errstr, ...); +static void draw(int); +static void execsh(void); +static void sigchld(int); +static void run(void); + +static int escaddc(char); +static int escfinal(char); +static void escdump(void); +static void eschandle(void); +static void escparse(void); +static void escreset(void); + +static void tclearregion(int, int, int, int); +static void tcpos(int); +static void tcursor(int); +static void tdeletechar(int); +static void tdeleteline(int); +static void tdump(void); +static void tinsertblank(int); +static void tinsertblankline(int); +static void tmoveto(int, int); +static void tnew(int, int); +static void tnewline(void); +static void tputc(char); +static void tputs(char*, int); +static void tresize(int, int); +static void tscroll(void); +static void tsetattr(int*, int); +static void tsetchar(char); +static void tsetscroll(int, int); + +static void ttynew(void); +static void ttyread(void); +static void ttyresize(int, int); +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 void kpress(XEvent *); +static void resize(XEvent *); + +static void (*handler[LASTEvent])(XEvent *) = { + [KeyPress] = kpress, + [Expose] = expose, + [ConfigureNotify] = resize +}; /* Globals */ -DC dc; -XWindow xw; -Term term; -Escseq escseq; -int cmdfd; -pid_t pid; -int running; +static DC dc; +static XWindow xw; +static Term term; +static Escseq escseq; +static int cmdfd; +static pid_t pid; +static int running; void die(const char *errstr, ...) { @@ -259,7 +266,7 @@ ttyread(void) { } void -ttywrite(char *s, size_t n) { +ttywrite(const char *s, size_t n) { if(write(cmdfd, s, n) == -1) die("write error on tty: %s\n", SERRNO); } @@ -997,29 +1004,25 @@ draw(int redraw_all) { xcursor(CSdraw); } -char* -kmap(KeySym k) { - int i; - for(i = 0; i < LEN(key); i++) - if(key[i].k == k) - return (char*)key[i].s; - return NULL; +void +expose(XEvent *ev) { + draw(SCredraw); } void -kpress(XKeyEvent *e) { +kpress(XEvent *ev) { + XKeyEvent *e = &ev->xkey; KeySym ksym; char buf[32]; int len; int meta; int shift; - char* skmap; meta = e->state & Mod1Mask; shift = e->state & ShiftMask; len = XLookupString(e, buf, sizeof(buf), &ksym, NULL); - if(skmap = kmap(ksym)) - ttywrite(skmap, strlen(skmap)); + if(key[ksym]) + ttywrite(key[ksym], strlen(key[ksym])); else if(len > 0) { buf[sizeof(buf)-1] = '\0'; if(meta && len == 1) @@ -1054,7 +1057,6 @@ resize(XEvent *e) { void run(void) { - int ret; XEvent ev; fd_set rfd; int xfd = XConnectionNumber(xw.dis); @@ -1062,39 +1064,25 @@ run(void) { running = 1; XSelectInput(xw.dis, xw.win, ExposureMask | KeyPressMask | StructureNotifyMask); XResizeWindow(xw.dis, xw.win, xw.w , xw.h); /* fix resize bug in wmii (?) */ - + while(running) { FD_ZERO(&rfd); FD_SET(cmdfd, &rfd); FD_SET(xfd, &rfd); - XFlush(xw.dis); - ret = select(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, NULL); - - if(ret < 0) + if(select(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, NULL) == -1) { + if(errno == EINTR) + continue; die("select failed: %s\n", SERRNO); - - if(FD_ISSET(xfd, &rfd)) { - while(XPending(xw.dis)) { - XNextEvent(xw.dis, &ev); - switch (ev.type) { - default: - break; - case KeyPress: - kpress(&ev.xkey); - break; - case Expose: - draw(SCredraw); - break; - case ConfigureNotify: - resize(&ev); - break; - } - } } if(FD_ISSET(cmdfd, &rfd)) { ttyread(); draw(SCupdate); } + while(XPending(xw.dis)) { + XNextEvent(xw.dis, &ev); + if(handler[ev.type]) + (handler[ev.type])(&ev); + } } }