From cf65699a29683bff9d50187c18b160e21a538f48 Mon Sep 17 00:00:00 2001
From: Anselm R Garbe <garbeam@gmail.com>
Date: Fri, 10 Jul 2009 16:23:11 +0100
Subject: 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
---
st.c | 168 +++++++++++++++++++++++++++++++------------------------------------
1 file changed, 78 insertions(+), 90 deletions(-)
(limited to 'st.c')
diff --git a/st.c b/st.c
index a7f957b..559dcda 100644
--- 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);
+ }
}
}
--
cgit v1.2.3