Move win-agnostic parts of draw/drawregion to st.c
[st.git] / x.c
diff --git a/x.c b/x.c
index 03555d1..96944ee 100644 (file)
--- a/x.c
+++ b/x.c
@@ -20,9 +20,38 @@ static char *argv0;
 #include "st.h"
 #include "win.h"
 
+/* types used in config.h */
+typedef struct {
+       uint mod;
+       KeySym keysym;
+       void (*func)(const Arg *);
+       const Arg arg;
+} Shortcut;
+
+typedef struct {
+       uint b;
+       uint mask;
+       char *s;
+} MouseShortcut;
+
+typedef struct {
+       KeySym k;
+       uint mask;
+       char *s;
+       /* three-valued logic variables: 0 indifferent, 1 on, -1 off */
+       signed char appkey;    /* application keypad */
+       signed char appcursor; /* application cursor */
+} Key;
+
+/* X modifiers */
+#define XK_ANY_MOD    UINT_MAX
+#define XK_NO_MOD     0
+#define XK_SWITCH_MOD (1<<13)
+
 /* function definitions used in config.h */
 static void clipcopy(const Arg *);
 static void clippaste(const Arg *);
+static void numlock(const Arg *);
 static void selpaste(const Arg *);
 static void zoom(const Arg *);
 static void zoomabs(const Arg *);
@@ -36,6 +65,7 @@ static void zoomreset(const Arg *);
 #define XEMBED_FOCUS_OUT 5
 
 /* macros */
+#define IS_SET(flag)           ((win.mode & (flag)) != 0)
 #define TRUERED(x)             (((x) & 0xff0000) >> 8)
 #define TRUEGREEN(x)           (((x) & 0xff00))
 #define TRUEBLUE(x)            (((x) & 0xff) << 8)
@@ -65,6 +95,9 @@ typedef struct {
 
 typedef struct {
        Atom xtarget;
+       char *primary, *clipboard;
+       struct timespec tclick1;
+       struct timespec tclick2;
 } XSelection;
 
 /* Font structure */
@@ -96,7 +129,6 @@ static int xmakeglyphfontspecs(XftGlyphFontSpec *, const Glyph *, int, int, int)
 static void xdrawglyphfontspecs(const XftGlyphFontSpec *, Glyph, int, int, int);
 static void xdrawglyph(Glyph, int, int);
 static void xclear(int, int, int, int);
-static void xdrawcursor(void);
 static int xgeommasktogravity(int);
 static void xinit(void);
 static void cresize(int, int);
@@ -124,8 +156,8 @@ static void propnotify(XEvent *);
 static void selnotify(XEvent *);
 static void selclear_(XEvent *);
 static void selrequest(XEvent *);
-static void selcopy(Time);
-static void getbuttoninfo(XEvent *);
+static void setsel(char *, Time);
+static void mousesel(XEvent *, int);
 static void mousereport(XEvent *);
 static char *kmap(KeySym, uint);
 static int match(uint, uint);
@@ -163,11 +195,7 @@ static void (*handler[LASTEvent])(XEvent *) = {
 static DC dc;
 static XWindow xw;
 static XSelection xsel;
-
-enum window_state {
-       WIN_VISIBLE = 1,
-       WIN_FOCUSED = 2
-};
+static TermWindow win;
 
 /* Font Ring Cache */
 enum {
@@ -204,11 +232,11 @@ clipcopy(const Arg *dummy)
 {
        Atom clipboard;
 
-       if (sel.clipboard != NULL)
-               free(sel.clipboard);
+       if (xsel.clipboard != NULL)
+               free(xsel.clipboard);
 
-       if (sel.primary != NULL) {
-               sel.clipboard = xstrdup(sel.primary);
+       if (xsel.primary != NULL) {
+               xsel.clipboard = xstrdup(xsel.primary);
                clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
                XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
        }
@@ -231,6 +259,12 @@ selpaste(const Arg *dummy)
                        xw.win, CurrentTime);
 }
 
+void
+numlock(const Arg *dummy)
+{
+       win.mode ^= MODE_NUMLOCK;
+}
+
 void
 zoom(const Arg *arg)
 {
@@ -246,7 +280,6 @@ zoomabs(const Arg *arg)
        xunloadfonts();
        xloadfonts(usedfont, arg->f);
        cresize(0, 0);
-       ttyresize(win.tw, win.th);
        redraw();
        xhints();
 }
@@ -281,24 +314,20 @@ y2row(int y)
 }
 
 void
-getbuttoninfo(XEvent *e)
+mousesel(XEvent *e, int done)
 {
-       int type;
+       int type, seltype = SEL_REGULAR;
        uint state = e->xbutton.state & ~(Button1Mask | forceselmod);
 
-       sel.alt = IS_SET(MODE_ALTSCREEN);
-
-       sel.oe.x = x2col(e->xbutton.x);
-       sel.oe.y = y2row(e->xbutton.y);
-       selnormalize();
-
-       sel.type = SEL_REGULAR;
        for (type = 1; type < LEN(selmasks); ++type) {
                if (match(selmasks[type], state)) {
-                       sel.type = type;
+                       seltype = type;
                        break;
                }
        }
+       selextend(x2col(e->xbutton.x), y2row(e->xbutton.y), seltype, done);
+       if (done)
+               setsel(getsel(), e->xbutton.time);
 }
 
 void
@@ -362,7 +391,7 @@ mousereport(XEvent *e)
                return;
        }
 
-       ttywrite(buf, len);
+       ttywrite(buf, len, 0);
 }
 
 void
@@ -370,6 +399,7 @@ bpress(XEvent *e)
 {
        struct timespec now;
        MouseShortcut *ms;
+       int snap;
 
        if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
                mousereport(e);
@@ -379,48 +409,31 @@ bpress(XEvent *e)
        for (ms = mshortcuts; ms < mshortcuts + LEN(mshortcuts); ms++) {
                if (e->xbutton.button == ms->b
                                && match(ms->mask, e->xbutton.state)) {
-                       ttysend(ms->s, strlen(ms->s));
+                       ttywrite(ms->s, strlen(ms->s), 1);
                        return;
                }
        }
 
        if (e->xbutton.button == Button1) {
-               clock_gettime(CLOCK_MONOTONIC, &now);
-
-               /* Clear previous selection, logically and visually. */
-               selclear_(NULL);
-               sel.mode = SEL_EMPTY;
-               sel.type = SEL_REGULAR;
-               sel.oe.x = sel.ob.x = x2col(e->xbutton.x);
-               sel.oe.y = sel.ob.y = y2row(e->xbutton.y);
-
                /*
                 * If the user clicks below predefined timeouts specific
                 * snapping behaviour is exposed.
                 */
-               if (TIMEDIFF(now, sel.tclick2) <= tripleclicktimeout) {
-                       sel.snap = SNAP_LINE;
-               } else if (TIMEDIFF(now, sel.tclick1) <= doubleclicktimeout) {
-                       sel.snap = SNAP_WORD;
+               clock_gettime(CLOCK_MONOTONIC, &now);
+               if (TIMEDIFF(now, xsel.tclick2) <= tripleclicktimeout) {
+                       snap = SNAP_LINE;
+               } else if (TIMEDIFF(now, xsel.tclick1) <= doubleclicktimeout) {
+                       snap = SNAP_WORD;
                } else {
-                       sel.snap = 0;
+                       snap = 0;
                }
-               selnormalize();
+               xsel.tclick2 = xsel.tclick1;
+               xsel.tclick1 = now;
 
-               if (sel.snap != 0)
-                       sel.mode = SEL_READY;
-               tsetdirt(sel.nb.y, sel.ne.y);
-               sel.tclick2 = sel.tclick1;
-               sel.tclick1 = now;
+               selstart(x2col(e->xbutton.x), y2row(e->xbutton.y), snap);
        }
 }
 
-void
-selcopy(Time t)
-{
-       xsetsel(getsel(), t);
-}
-
 void
 propnotify(XEvent *e)
 {
@@ -508,10 +521,10 @@ selnotify(XEvent *e)
                }
 
                if (IS_SET(MODE_BRCKTPASTE) && ofs == 0)
-                       ttywrite("\033[200~", 6);
-               ttysend((char *)data, nitems * format / 8);
+                       ttywrite("\033[200~", 6, 0);
+               ttywrite((char *)data, nitems * format / 8, 1);
                if (IS_SET(MODE_BRCKTPASTE) && rem == 0)
-                       ttywrite("\033[201~", 6);
+                       ttywrite("\033[201~", 6, 0);
                XFree(data);
                /* number of 32-bit chunks returned */
                ofs += nitems * format / 32;
@@ -571,9 +584,9 @@ selrequest(XEvent *e)
                 */
                clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
                if (xsre->selection == XA_PRIMARY) {
-                       seltext = sel.primary;
+                       seltext = xsel.primary;
                } else if (xsre->selection == clipboard) {
-                       seltext = sel.clipboard;
+                       seltext = xsel.clipboard;
                } else {
                        fprintf(stderr,
                                "Unhandled clipboard selection 0x%lx\n",
@@ -595,16 +608,22 @@ selrequest(XEvent *e)
 }
 
 void
-xsetsel(char *str, Time t)
+setsel(char *str, Time t)
 {
-       free(sel.primary);
-       sel.primary = str;
+       free(xsel.primary);
+       xsel.primary = str;
 
        XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, t);
        if (XGetSelectionOwner(xw.dpy, XA_PRIMARY) != xw.win)
                selclear_(NULL);
 }
 
+void
+xsetsel(char *str)
+{
+       setsel(str, CurrentTime);
+}
+
 void
 brelease(XEvent *e)
 {
@@ -613,41 +632,21 @@ brelease(XEvent *e)
                return;
        }
 
-       if (e->xbutton.button == Button2) {
+       if (e->xbutton.button == Button2)
                selpaste(NULL);
-       } else if (e->xbutton.button == Button1) {
-               if (sel.mode == SEL_READY) {
-                       getbuttoninfo(e);
-                       selcopy(e->xbutton.time);
-               } else
-                       selclear_(NULL);
-               sel.mode = SEL_IDLE;
-               tsetdirt(sel.nb.y, sel.ne.y);
-       }
+       else if (e->xbutton.button == Button1)
+               mousesel(e, 1);
 }
 
 void
 bmotion(XEvent *e)
 {
-       int oldey, oldex, oldsby, oldsey;
-
        if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
                mousereport(e);
                return;
        }
 
-       if (!sel.mode)
-               return;
-
-       sel.mode = SEL_READY;
-       oldey = sel.oe.y;
-       oldex = sel.oe.x;
-       oldsby = sel.nb.y;
-       oldsey = sel.ne.y;
-       getbuttoninfo(e);
-
-       if (oldey != sel.oe.y || oldex != sel.oe.x)
-               tsetdirt(MIN(sel.nb.y, oldsby), MAX(sel.ne.y, oldsey));
+       mousesel(e, 0);
 }
 
 void
@@ -665,6 +664,7 @@ cresize(int width, int height)
 
        tresize(col, row);
        xresize(col, row);
+       ttyresize(win.tw, win.th);
 }
 
 void
@@ -1092,11 +1092,16 @@ xinit(void)
        XChangeProperty(xw.dpy, xw.win, xw.netwmpid, XA_CARDINAL, 32,
                        PropModeReplace, (uchar *)&thispid, 1);
 
+       win.mode = MODE_NUMLOCK;
        resettitle();
        XMapWindow(xw.dpy, xw.win);
        xhints();
        XSync(xw.dpy, False);
 
+       clock_gettime(CLOCK_MONOTONIC, &xsel.tclick1);
+       clock_gettime(CLOCK_MONOTONIC, &xsel.tclick2);
+       xsel.primary = NULL;
+       xsel.clipboard = NULL;
        xsel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
        if (xsel.xtarget == None)
                xsel.xtarget = XA_STRING;
@@ -1317,14 +1322,13 @@ xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, i
                fg = &revfg;
        }
 
-
        if (base.mode & ATTR_REVERSE) {
                temp = fg;
                fg = bg;
                bg = temp;
        }
 
-       if (base.mode & ATTR_BLINK && term.mode & MODE_BLINK)
+       if (base.mode & ATTR_BLINK && win.mode & MODE_BLINK)
                fg = bg;
 
        if (base.mode & ATTR_INVISIBLE)
@@ -1388,7 +1392,6 @@ xdrawcursor(void)
        static int oldx = 0, oldy = 0;
        int curx;
        Glyph g = {' ', ATTR_NULL, defaultbg, defaultcs}, og;
-       int ena_sel = sel.ob.x != -1 && sel.alt == IS_SET(MODE_ALTSCREEN);
        Color drawcol;
 
        LIMIT(oldx, 0, term.col-1);
@@ -1404,7 +1407,7 @@ xdrawcursor(void)
 
        /* remove the old cursor */
        og = term.line[oldy][oldx];
-       if (ena_sel && selected(oldx, oldy))
+       if (selected(oldx, oldy))
                og.mode ^= ATTR_REVERSE;
        xdrawglyph(og, oldx, oldy);
 
@@ -1418,7 +1421,7 @@ xdrawcursor(void)
        if (IS_SET(MODE_REVERSE)) {
                g.mode |= ATTR_REVERSE;
                g.bg = defaultfg;
-               if (ena_sel && selected(term.c.x, term.c.y)) {
+               if (selected(term.c.x, term.c.y)) {
                        drawcol = dc.col[defaultcs];
                        g.fg = defaultrcs;
                } else {
@@ -1426,7 +1429,7 @@ xdrawcursor(void)
                        g.fg = defaultcs;
                }
        } else {
-               if (ena_sel && selected(term.c.x, term.c.y)) {
+               if (selected(term.c.x, term.c.y)) {
                        drawcol = dc.col[defaultrcs];
                        g.fg = defaultfg;
                        g.bg = defaultrcs;
@@ -1439,7 +1442,7 @@ xdrawcursor(void)
                return;
 
        /* draw the new one */
-       if (win.state & WIN_FOCUSED) {
+       if (IS_SET(MODE_FOCUSED)) {
                switch (win.cursor) {
                case 7: /* st extension: snowman */
                        utf8decode("☃", &g.u, UTF_SIZ);
@@ -1508,60 +1511,51 @@ xsettitle(char *p)
        XFree(prop.value);
 }
 
-void
-draw(void)
+int
+xstartdraw(void)
 {
-       drawregion(0, 0, term.col, term.row);
-       XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, win.w,
-                       win.h, 0, 0);
-       XSetForeground(xw.dpy, dc.gc,
-                       dc.col[IS_SET(MODE_REVERSE)?
-                               defaultfg : defaultbg].pixel);
+       return IS_SET(MODE_VISIBLE);
 }
 
 void
-drawregion(int x1, int y1, int x2, int y2)
+xdrawline(Line line, int x1, int y1, int x2)
 {
-       int i, x, y, ox, numspecs;
+       int i, x, ox, numspecs;
        Glyph base, new;
-       XftGlyphFontSpec *specs;
-       int ena_sel = sel.ob.x != -1 && sel.alt == IS_SET(MODE_ALTSCREEN);
-
-       if (!(win.state & WIN_VISIBLE))
-               return;
+       XftGlyphFontSpec *specs = xw.specbuf;
 
-       for (y = y1; y < y2; y++) {
-               if (!term.dirty[y])
+       numspecs = xmakeglyphfontspecs(specs, &line[x1], x2 - x1, x1, y1);
+       i = ox = 0;
+       for (x = x1; x < x2 && i < numspecs; x++) {
+               new = line[x];
+               if (new.mode == ATTR_WDUMMY)
                        continue;
-
-               term.dirty[y] = 0;
-
-               specs = xw.specbuf;
-               numspecs = xmakeglyphfontspecs(specs, &term.line[y][x1], x2 - x1, x1, y);
-
-               i = ox = 0;
-               for (x = x1; x < x2 && i < numspecs; x++) {
-                       new = term.line[y][x];
-                       if (new.mode == ATTR_WDUMMY)
-                               continue;
-                       if (ena_sel && selected(x, y))
-                               new.mode ^= ATTR_REVERSE;
-                       if (i > 0 && ATTRCMP(base, new)) {
-                               xdrawglyphfontspecs(specs, base, i, ox, y);
-                               specs += i;
-                               numspecs -= i;
-                               i = 0;
-                       }
-                       if (i == 0) {
-                               ox = x;
-                               base = new;
-                       }
-                       i++;
+               if (selected(x, y1))
+                       new.mode ^= ATTR_REVERSE;
+               if (i > 0 && ATTRCMP(base, new)) {
+                       xdrawglyphfontspecs(specs, base, i, ox, y1);
+                       specs += i;
+                       numspecs -= i;
+                       i = 0;
                }
-               if (i > 0)
-                       xdrawglyphfontspecs(specs, base, i, ox, y);
+               if (i == 0) {
+                       ox = x;
+                       base = new;
+               }
+               i++;
        }
-       xdrawcursor();
+       if (i > 0)
+               xdrawglyphfontspecs(specs, base, i, ox, y1);
+}
+
+void
+xfinishdraw(void)
+{
+       XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, win.w,
+                       win.h, 0, 0);
+       XSetForeground(xw.dpy, dc.gc,
+                       dc.col[IS_SET(MODE_REVERSE)?
+                               defaultfg : defaultbg].pixel);
 }
 
 void
@@ -1575,13 +1569,13 @@ visibility(XEvent *ev)
 {
        XVisibilityEvent *e = &ev->xvisibility;
 
-       MODBIT(win.state, e->state != VisibilityFullyObscured, WIN_VISIBLE);
+       MODBIT(win.mode, e->state != VisibilityFullyObscured, MODE_VISIBLE);
 }
 
 void
 unmap(XEvent *ev)
 {
-       win.state &= ~WIN_VISIBLE;
+       win.mode &= ~MODE_VISIBLE;
 }
 
 void
@@ -1591,6 +1585,25 @@ xsetpointermotion(int set)
        XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask, &xw.attrs);
 }
 
+void
+xsetmode(int set, unsigned int flags)
+{
+       int mode = win.mode;
+       MODBIT(win.mode, set, flags);
+       if ((win.mode & MODE_REVERSE) != (mode & MODE_REVERSE))
+               redraw();
+}
+
+int
+xsetcursor(int cursor)
+{
+       DEFAULT(cursor, 1);
+       if (!BETWEEN(cursor, 0, 6))
+               return 1;
+       win.cursor = cursor;
+       return 0;
+}
+
 void
 xseturgency(int add)
 {
@@ -1604,7 +1617,7 @@ xseturgency(int add)
 void
 xbell(void)
 {
-       if (!(win.state & WIN_FOCUSED))
+       if (!(IS_SET(MODE_FOCUSED)))
                xseturgency(1);
        if (bellvolume)
                XkbBell(xw.dpy, xw.win, bellvolume, (Atom)NULL);
@@ -1620,15 +1633,15 @@ focus(XEvent *ev)
 
        if (ev->type == FocusIn) {
                XSetICFocus(xw.xic);
-               win.state |= WIN_FOCUSED;
+               win.mode |= MODE_FOCUSED;
                xseturgency(0);
                if (IS_SET(MODE_FOCUS))
-                       ttywrite("\033[I", 3);
+                       ttywrite("\033[I", 3, 0);
        } else {
                XUnsetICFocus(xw.xic);
-               win.state &= ~WIN_FOCUSED;
+               win.mode &= ~MODE_FOCUSED;
                if (IS_SET(MODE_FOCUS))
-                       ttywrite("\033[O", 3);
+                       ttywrite("\033[O", 3, 0);
        }
 }
 
@@ -1663,15 +1676,12 @@ kmap(KeySym k, uint state)
 
                if (IS_SET(MODE_APPKEYPAD) ? kp->appkey < 0 : kp->appkey > 0)
                        continue;
-               if (term.numlock && kp->appkey == 2)
+               if (IS_SET(MODE_NUMLOCK) && kp->appkey == 2)
                        continue;
 
                if (IS_SET(MODE_APPCURSOR) ? kp->appcursor < 0 : kp->appcursor > 0)
                        continue;
 
-               if (IS_SET(MODE_CRLF) ? kp->crlf < 0 : kp->crlf > 0)
-                       continue;
-
                return kp->s;
        }
 
@@ -1703,7 +1713,7 @@ kpress(XEvent *ev)
 
        /* 2. custom keys from config.h */
        if ((customkey = kmap(ksym, e->state))) {
-               ttysend(customkey, strlen(customkey));
+               ttywrite(customkey, strlen(customkey), 1);
                return;
        }
 
@@ -1722,7 +1732,7 @@ kpress(XEvent *ev)
                        len = 2;
                }
        }
-       ttysend(buf, len);
+       ttywrite(buf, len, 1);
 }
 
 
@@ -1735,10 +1745,10 @@ cmessage(XEvent *e)
         */
        if (e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
                if (e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
-                       win.state |= WIN_FOCUSED;
+                       win.mode |= MODE_FOCUSED;
                        xseturgency(0);
                } else if (e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
-                       win.state &= ~WIN_FOCUSED;
+                       win.mode &= ~MODE_FOCUSED;
                }
        } else if (e->xclient.data.l[0] == xw.wmdeletewin) {
                /* Send SIGHUP to shell */
@@ -1754,7 +1764,6 @@ resize(XEvent *e)
                return;
 
        cresize(e->xconfigure.width, e->xconfigure.height);
-       ttyresize(win.tw, win.th);
 }
 
 void
@@ -1783,9 +1792,8 @@ run(void)
                }
        } while (ev.type != MapNotify);
 
-       cresize(w, h);
        ttynew(opt_line, opt_io, opt_cmd);
-       ttyresize(win.tw, win.th);
+       cresize(w, h);
 
        clock_gettime(CLOCK_MONOTONIC, &last);
        lastblink = last;
@@ -1805,7 +1813,7 @@ run(void)
                        if (blinktimeout) {
                                blinkset = tattrset(ATTR_BLINK);
                                if (!blinkset)
-                                       MODBIT(term.mode, 0, MODE_BLINK);
+                                       MODBIT(win.mode, 0, MODE_BLINK);
                        }
                }
 
@@ -1820,7 +1828,7 @@ run(void)
                dodraw = 0;
                if (blinktimeout && TIMEDIFF(now, lastblink) > blinktimeout) {
                        tsetdirtattr(ATTR_BLINK);
-                       term.mode ^= MODE_BLINK;
+                       win.mode ^= MODE_BLINK;
                        lastblink = now;
                        dodraw = 1;
                }