mirror of git://git.suckless.org/st
cleanup & bugfix in xdraws().
This commit is contained in:
Aurélien Aptel
parent
58a650f089
commit
37f079e063
219
st.c
219
st.c
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@ -131,20 +131,17 @@ typedef struct {
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char s[ESC_BUF_SIZ];
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} Key;
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typedef struct {
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XFontSet fs;
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short lbearing;
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short rbearing;
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int ascent;
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int descent;
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} FontInfo;
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/* Drawing Context */
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typedef struct {
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unsigned long col[256];
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FontInfo font;
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FontInfo bfont;
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GC gc;
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struct {
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int ascent;
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int descent;
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short lbearing;
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short rbearing;
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XFontSet set;
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} font, bfont;
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} DC;
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/* TODO: use better name for vars... */
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@ -222,10 +219,10 @@ static inline int selected(int, int);
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static void selcopy(void);
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static void selpaste(void);
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static int stou(char *, long *);
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static int utos(long *, char *);
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static int slen(char *);
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static int canstou(char *, int);
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static int utf8decode(char *, long *);
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static int utf8encode(long *, char *);
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static int utf8size(char *);
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static int isfullutf8(char *, int);
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static void (*handler[LASTEvent])(XEvent *) = {
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[KeyPress] = kpress,
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@ -254,8 +251,8 @@ static char *opt_cmd = NULL;
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static char *opt_title = NULL;
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static char *opt_class = NULL;
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/* UTF-8 decode */
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static int stou(char *s, long *u) {
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int
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utf8decode(char *s, long *u) {
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unsigned char c;
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int i, n, rtn;
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@ -293,8 +290,8 @@ invalid:
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return rtn;
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}
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/* UTF-8 encode */
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static int utos(long *u, char *s) {
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int
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utf8encode(long *u, char *s) {
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unsigned char *sp;
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unsigned long uc;
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int i, n;
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@ -329,34 +326,32 @@ invalid:
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/* use this if your buffer is less than UTF_SIZ, it returns 1 if you can decode
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UTF-8 otherwise return 0 */
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static int canstou(char *s, int b) {
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unsigned char c = *s;
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int n;
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int
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isfullutf8(char *s, int b) {
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unsigned char *c1, *c2, *c3;
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c1 = (unsigned char *) s;
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c2 = (unsigned char *) ++s;
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c3 = (unsigned char *) ++s;
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if(b < 1)
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return 0;
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else if (~c&B7)
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return 1;
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else if ((c&(B7|B6|B5)) == (B7|B6))
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n = 1;
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else if ((c&(B7|B6|B5|B4)) == (B7|B6|B5))
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n = 2;
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else if ((c&(B7|B6|B5|B4|B3)) == (B7|B6|B5|B4))
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n = 3;
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else
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return 1;
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for (--b,++s; n>0&&b>0; --n,--b,++s) {
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c = *s;
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if ((c&(B7|B6)) != B7)
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break;
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}
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if (n > 0 && b == 0)
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else if((*c1&(B7|B6|B5)) == (B7|B6) && b == 1)
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return 0;
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else if((*c1&(B7|B6|B5|B4)) == (B7|B6|B5) &&
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((b == 1) ||
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((b == 2) && (*c2&(B7|B6)) == B7)))
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return 0;
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else if((*c1&(B7|B6|B5|B4|B3)) == (B7|B6|B5|B4) &&
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((b == 1) ||
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((b == 2) && (*c2&(B7|B6)) == B7) ||
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((b == 3) && (*c2&(B7|B6)) == B7 && (*c3&(B7|B6)) == B7)))
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return 0;
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else
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return 1;
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}
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static int slen(char *s) {
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int
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utf8size(char *s) {
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unsigned char c = *s;
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if (~c&B7)
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@ -369,13 +364,15 @@ static int slen(char *s) {
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return 4;
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}
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static void selinit(void) {
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void
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selinit(void) {
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sel.mode = 0;
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sel.bx = -1;
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sel.clip = NULL;
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}
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static inline int selected(int x, int y) {
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static inline int
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selected(int x, int y) {
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if(sel.ey == y && sel.by == y) {
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int bx = MIN(sel.bx, sel.ex);
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int ex = MAX(sel.bx, sel.ex);
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@ -385,7 +382,8 @@ static inline int selected(int x, int y) {
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|| (y==sel.b.y && x>=sel.b.x && (x<=sel.e.x || sel.b.y!=sel.e.y));
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}
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static void getbuttoninfo(XEvent *e, int *b, int *x, int *y) {
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void
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getbuttoninfo(XEvent *e, int *b, int *x, int *y) {
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if(b)
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*b = e->xbutton.button;
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@ -397,13 +395,15 @@ static void getbuttoninfo(XEvent *e, int *b, int *x, int *y) {
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sel.e.y = MAX(sel.by, sel.ey);
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}
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static void bpress(XEvent *e) {
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void
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bpress(XEvent *e) {
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sel.mode = 1;
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sel.ex = sel.bx = e->xbutton.x/xw.cw;
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sel.ey = sel.by = e->xbutton.y/xw.ch;
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}
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static void selcopy() {
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void
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selcopy(void) {
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char *str, *ptr;
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int ls, x, y, sz, sl;
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@ -415,7 +415,7 @@ static void selcopy() {
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for(y = 0; y < term.row; y++) {
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for(x = 0; x < term.col; x++)
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if(term.line[y][x].state & GLYPH_SET && (ls = selected(x, y))) {
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sl = slen(term.line[y][x].c);
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sl = utf8size(term.line[y][x].c);
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memcpy(ptr, term.line[y][x].c, sl);
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ptr += sl;
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}
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@ -427,7 +427,8 @@ static void selcopy() {
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xsetsel(str);
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}
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static void selnotify(XEvent *e) {
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void
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selnotify(XEvent *e) {
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unsigned long nitems;
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unsigned long ofs, rem;
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int format;
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@ -449,12 +450,13 @@ static void selnotify(XEvent *e) {
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} while(rem > 0);
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}
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static void selpaste() {
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void
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selpaste() {
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XConvertSelection(xw.dis, XA_PRIMARY, XA_STRING, XA_PRIMARY, xw.win, CurrentTime);
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}
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static void selrequest(XEvent *e)
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{
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void
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selrequest(XEvent *e) {
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XSelectionRequestEvent *xsre;
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XSelectionEvent xev;
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Atom xa_targets;
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@ -488,7 +490,8 @@ static void selrequest(XEvent *e)
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fprintf(stderr, "Error sending SelectionNotify event\n");
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}
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static void xsetsel(char *str) {
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void
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xsetsel(char *str) {
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/* register the selection for both the clipboard and the primary */
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Atom clipboard;
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@ -504,7 +507,8 @@ static void xsetsel(char *str) {
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}
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/* TODO: doubleclick to select word */
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static void brelease(XEvent *e) {
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void
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brelease(XEvent *e) {
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int b;
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sel.mode = 0;
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getbuttoninfo(e, &b, &sel.ex, &sel.ey);
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@ -519,7 +523,8 @@ static void brelease(XEvent *e) {
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draw(1);
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}
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static void bmotion(XEvent *e) {
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void
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bmotion(XEvent *e) {
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if (sel.mode) {
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getbuttoninfo(e, NULL, &sel.ex, &sel.ey);
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/* XXX: draw() can't keep up, disabled for now.
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@ -528,26 +533,6 @@ static void bmotion(XEvent *e) {
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}
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}
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#ifdef DEBUG
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void
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tdump(void) {
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int row, col;
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Glyph c;
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for(row = 0; row < term.row; row++) {
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for(col = 0; col < term.col; col++) {
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if(col == term.c.x && row == term.c.y)
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putchar('#');
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else {
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c = term.line[row][col];
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putchar(c.state & GLYPH_SET ? c.c : '.');
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}
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}
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putchar('\n');
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}
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}
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#endif
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void
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die(const char *errstr, ...) {
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va_list ap;
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@ -631,9 +616,9 @@ ttyread(void) {
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die("Couldn't read from shell: %s\n", SERRNO);
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else {
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buflen += ret;
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for(ptr=buf; buflen>=UTF_SIZ||canstou(ptr,buflen); buflen-=br) {
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br = stou(ptr, &u);
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utos(&u, s);
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for(ptr=buf; buflen>=UTF_SIZ||isfullutf8(ptr,buflen); buflen-=br) {
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br = utf8decode(ptr, &u);
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utf8encode(&u, s);
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tputc(s);
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ptr += br;
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}
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@ -1460,49 +1445,63 @@ xhints(void)
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XSetWMProperties(xw.dis, xw.win, NULL, NULL, NULL, 0, &size, &wm, &class);
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}
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XFontSet
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xinitfont(char *fontstr)
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{
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XFontSet set;
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char *def, **missing;
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int n;
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missing = NULL;
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set = XCreateFontSet(xw.dis, fontstr, &missing, &n, &def);
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if(missing) {
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while(n--)
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fprintf(stderr, "st: missing fontset: %s\n", missing[n]);
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XFreeStringList(missing);
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}
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return set;
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}
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void
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xsetfontinfo(FontInfo *fi)
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xgetfontinfo(XFontSet set, int *ascent, int *descent, short *lbearing, short *rbearing)
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{
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XFontStruct **xfonts;
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int fnum;
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int i;
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char **fontnames;
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char **font_names;
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int i, n;
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fi->lbearing = 0;
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fi->rbearing = 0;
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fi->ascent = 0;
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fi->descent = 0;
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fnum = XFontsOfFontSet(fi->fs, &xfonts, &fontnames);
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for(i=0; i<fnum; i++,xfonts++,fontnames++) {
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puts(*fontnames);
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if(fi->ascent < (*xfonts)->ascent)
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fi->ascent = (*xfonts)->ascent;
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if(fi->descent < (*xfonts)->descent)
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fi->descent = (*xfonts)->descent;
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if(fi->rbearing < (*xfonts)->max_bounds.rbearing)
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fi->rbearing = (*xfonts)->max_bounds.rbearing;
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if(fi->lbearing < (*xfonts)->min_bounds.lbearing)
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fi->lbearing = (*xfonts)->min_bounds.lbearing;
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*ascent = *descent = *lbearing = *rbearing = 0;
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n = XFontsOfFontSet(set, &xfonts, &font_names);
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for(i = 0; i < n; i++) {
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*ascent = MAX(*ascent, (*xfonts)->ascent);
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*descent = MAX(*descent, (*xfonts)->descent);
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*lbearing = MAX(*lbearing, (*xfonts)->min_bounds.lbearing);
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*rbearing = MAX(*rbearing, (*xfonts)->max_bounds.rbearing);
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xfonts++;
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}
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}
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void
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initfonts(char *fontstr, char *bfontstr)
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{
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if((dc.font.set = xinitfont(fontstr)) == NULL ||
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(dc.bfont.set = xinitfont(bfontstr)) == NULL)
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die("Can't load font %s\n", dc.font.set ? BOLDFONT : FONT);
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xgetfontinfo(dc.font.set, &dc.font.ascent, &dc.font.descent,
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&dc.font.lbearing, &dc.font.rbearing);
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xgetfontinfo(dc.bfont.set, &dc.bfont.ascent, &dc.bfont.descent,
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&dc.bfont.lbearing, &dc.bfont.rbearing);
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}
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void
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xinit(void) {
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XSetWindowAttributes attrs;
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char **mc;
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char *ds;
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int nmc;
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if(!(xw.dis = XOpenDisplay(NULL)))
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die("Can't open display\n");
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xw.scr = XDefaultScreen(xw.dis);
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/* font */
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if ((dc.font.fs = XCreateFontSet(xw.dis, FONT, &mc, &nmc, &ds)) == NULL ||
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(dc.bfont.fs = XCreateFontSet(xw.dis, BOLDFONT, &mc, &nmc, &ds)) == NULL)
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die("Can't load font %s\n", dc.font.fs ? BOLDFONT : FONT);
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xsetfontinfo(&dc.font);
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xsetfontinfo(&dc.bfont);
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initfonts(FONT, BOLDFONT);
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/* XXX: Assuming same size for bold font */
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xw.cw = dc.font.rbearing - dc.font.lbearing;
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@ -1550,9 +1549,9 @@ xinit(void) {
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}
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void
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xdraws(char *s, Glyph base, int x, int y, int cl, int sl) {
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xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
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unsigned long xfg, xbg;
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int winx = x*xw.cw, winy = y*xw.ch + dc.font.ascent, width = cl*xw.cw;
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int winx = x*xw.cw, winy = y*xw.ch + dc.font.ascent, width = charlen*xw.cw;
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int i;
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if(base.mode & ATTR_REVERSE)
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@ -1564,7 +1563,7 @@ xdraws(char *s, Glyph base, int x, int y, int cl, int sl) {
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XSetForeground(xw.dis, dc.gc, xfg);
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if(base.mode & ATTR_GFX)
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for(i = 0; i < cl; i++) {
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for(i = 0; i < bytelen; i++) {
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char c = gfx[(unsigned int)s[i] % 256];
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if(c)
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s[i] = c;
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@ -1572,8 +1571,8 @@ xdraws(char *s, Glyph base, int x, int y, int cl, int sl) {
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s[i] -= 0x5f;
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}
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XmbDrawImageString(xw.dis, xw.buf, base.mode & ATTR_BOLD ? dc.bfont.fs : dc.font.fs,
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dc.gc, winx, winy, s, sl);
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XmbDrawImageString(xw.dis, xw.buf, base.mode & ATTR_BOLD ? dc.bfont.set : dc.font.set,
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dc.gc, winx, winy, s, bytelen);
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if(base.mode & ATTR_UNDERLINE)
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XDrawLine(xw.dis, xw.buf, dc.gc, winx, winy+1, winx+width-1, winy+1);
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@ -1594,14 +1593,14 @@ xdrawcursor(void) {
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/* remove the old cursor */
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if(term.line[oldy][oldx].state & GLYPH_SET) {
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sl = slen(term.line[oldy][oldx].c);
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sl = utf8size(term.line[oldy][oldx].c);
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xdraws(term.line[oldy][oldx].c, term.line[oldy][oldx], oldx, oldy, 1, sl);
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} else
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xclear(oldx, oldy, oldx, oldy);
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/* draw the new one */
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if(!(term.c.state & CURSOR_HIDE) && (xw.state & WIN_FOCUSED)) {
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sl = slen(g.c);
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sl = utf8size(g.c);
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xdraws(g.c, g, term.c.x, term.c.y, 1, sl);
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oldx = term.c.x, oldy = term.c.y;
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}
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@ -1611,7 +1610,7 @@ xdrawcursor(void) {
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/* basic drawing routines */
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void
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xdrawc(int x, int y, Glyph g) {
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int sl = slen(g.c);
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int sl = utf8size(g.c);
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XRectangle r = { x * xw.cw, y * xw.ch, xw.cw, xw.ch };
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XSetBackground(xw.dis, dc.gc, dc.col[g.bg]);
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XSetForeground(xw.dis, dc.gc, dc.col[g.fg]);
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@ -1663,7 +1662,7 @@ draw(int redraw_all) {
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ox = x;
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base = new;
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}
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sl = slen(new.c);
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sl = utf8size(new.c);
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memcpy(buf+ib, new.c, sl);
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ib += sl;
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++ic;
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