we definately need pixmaps for the drawing, currently drawing into the window is...

[st.git] / st.c

diff --git a/st.c b/st.c
index 833805f..559dcda 100644 (file)
--- 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>
@@ -40,11 +40,14 @@ enum { CRset=1, CRupdate=2 };
 enum { TMwrap=1, TMinsert=2 };
 enum { SCupdate, SCredraw };
 
-#include "config.h"
-
 typedef int Color;
 
 typedef struct {
+       KeySym k;
+       char s[ESCSIZ];
+} Key;
+
+typedef struct {
        char c;     /* character code  */
        char mode;  /* attribute flags */
        Color fg;   /* foreground      */
@@ -95,6 +98,8 @@ typedef struct {
        int cw; /* char width  */
 } XWindow; 
 
+#include "config.h"
+
 /* Drawing Context */
 typedef struct {
        unsigned long col[LEN(colorname)];
@@ -102,61 +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, ...) {
@@ -254,7 +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);
 }
@@ -993,19 +1005,24 @@ draw(int redraw_all) {
 }
 
 void
-kpress(XKeyEvent *e) {
+expose(XEvent *ev) {
+       draw(SCredraw);
+}
+
+void
+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 = key[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)
@@ -1040,7 +1057,6 @@ resize(XEvent *e) {
 
 void
 run(void) {
-       int ret;
        XEvent ev;
        fd_set rfd;
        int xfd = XConnectionNumber(xw.dis);
@@ -1048,39 +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);
+               }
        }
 }