Added Xft support (in the same fashion as done in dmenu by Hiltjo Posthuma), Xinerama support, changed colors and key layout - svkbd - simple virtual keyboard
 (HTM) git clone git://git.suckless.org/svkbd
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 (DIR) Files
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 (DIR) README
 (DIR) LICENSE
       ---
 (DIR) commit c8ee269e7344f7e1deeaa8c4ce1b4a16c6f5b26b
 (DIR) parent 915b95b03d33e960e477fbdbe9d108ffc90aaacf
 (HTM) Author: Maarten van Gompel <proycon@anaproy.nl>
       Date:   Sun,  2 Aug 2020 15:46:12 +0200
       
       Added Xft support (in the same fashion as done in dmenu by Hiltjo Posthuma), Xinerama support, changed colors and key layout
       
       Signed-off-by: Miles Alan <m@milesalan.com>
       
       Diffstat:
         M LICENSE                             |       1 +
         M Makefile                            |      13 +++----------
         M config.def.h                        |      18 ++++++++++--------
         M config.mk                           |      12 ++++++++----
         A drw.c                               |     417 +++++++++++++++++++++++++++++++
         A drw.h                               |      51 +++++++++++++++++++++++++++++++
         M layout.sxmo.h                       |      38 ++++++++++++++++----------------
         M svkbd.c                             |     202 ++++++++++---------------------
         A util.c                              |      35 +++++++++++++++++++++++++++++++
         A util.h                              |       8 ++++++++
       
       10 files changed, 613 insertions(+), 182 deletions(-)
       ---
 (DIR) diff --git a/LICENSE b/LICENSE
       @@ -2,6 +2,7 @@ MIT/X Consortium License
        
        © 2011 Christoph Lohmann <20h@r-36.net>
        © 2008-2011 Enno Boland <g # s01 ' de>
       +© 2020 Maarten van Gompel <proycon@anaproy.nl>
        
        Permission is hereby granted, free of charge, to any person obtaining a
        copy of this software and associated documentation files (the "Software"),
 (DIR) diff --git a/Makefile b/Makefile
       @@ -3,12 +3,12 @@
        .POSIX:
        
        NAME = svkbd
       -VERSION = 0.1
       +VERSION = 0.2
        
        include config.mk
        
        BIN = ${NAME}-${LAYOUT}
       -SRC = ${NAME}.c
       +SRC = drw.c ${NAME}.c util.c
        OBJ = ${NAME}-${LAYOUT}.o
        MAN1 = ${NAME}.1
        
       @@ -24,15 +24,8 @@ options:
        config.h:
                cp config.def.h $@
        
       -${BIN}: config.h ${OBJ}
       -
       -${OBJ}: config.h
       -
       -${OBJ}:
       -        ${CC} -o $@ -c ${SRC} ${SVKBD_CFLAGS} ${SVKBD_CPPFLAGS}
       -
        ${BIN}:
       -        ${CC} -o ${BIN} ${OBJ} ${SVKBD_LDFLAGS}
       +        ${CC} -o $@ ${SRC} ${SVKBD_CFLAGS} ${SVKBD_CPPFLAGS} ${SVKBD_LDFLAGS}
        
        clean:
                rm -f ${NAME}-?? ${NAME}-??.o ${OBJ}
 (DIR) diff --git a/config.def.h b/config.def.h
       @@ -1,9 +1,11 @@
        static const Bool wmborder = True;
       -static const char font[] = "-*-terminus-medium-r-normal-*-14-*-*-*-*-*-*-*";
       -static const char normbgcolor[] = "#cccccc";
       -static const char normfgcolor[] = "#000000";
       -static const char pressbgcolor[] = "#0000cc";
       -static const char pressfgcolor[] = "#ffffff";
       -static const char highlightbgcolor[] = "#0000cc";
       -static const char highlightfgcolor[] = "#ffffff";
       -
       +static int fontsize = 16;
       +static const char *fonts[] = {
       +        "monospace:size=16"
       +};
       +static const char *colors[SchemeLast][2] = {
       +        /*     fg         bg       */
       +        [SchemeNorm] = { "#58a7c6", "#14313d" },
       +        [SchemePress] = { "#ffffff", "#005577" },
       +        [SchemeHighlight] = { "#58a7c6", "#005577" },
       +};
 (DIR) diff --git a/config.mk b/config.mk
       @@ -1,4 +1,4 @@
       -LAYOUT = en
       +LAYOUT = sxmo
        
        # paths
        PREFIX = /usr/local
       @@ -7,11 +7,15 @@ MANPREFIX = ${PREFIX}/share/man
        X11INC = /usr/X11R6/include
        X11LIB = /usr/X11R6/lib
        
       +# Xinerama, comment if you don't want it
       +XINERAMALIBS = -L${X11LIB} -lXinerama
       +XINERAMAFLAGS = -DXINERAMA
       +
        # includes and libs
       -INCS = -I. -I./layouts -I${X11INC}
       -LIBS = -L${X11LIB} -lX11 -lXtst
       +INCS = -I. -I./layouts -I${X11INC} -I/usr/include/freetype2
       +LIBS = -L${X11LIB} -lX11 -lXtst -lfontconfig -lXft ${XINERAMALIBS}
        
        # use system flags
        SVKBD_CFLAGS = ${CFLAGS}
        SVKBD_LDFLAGS = ${LDFLAGS} ${LIBS}
       -SVKBD_CPPFLAGS = ${CPPFLAGS} ${INCS} -DVERSION=\"VERSION\" -DLAYOUT=\"layout.${LAYOUT}.h\"
       +SVKBD_CPPFLAGS = ${CPPFLAGS} ${INCS} -DVERSION=\"VERSION\" ${XINERAMAFLAGS} -DLAYOUT=\"layout.${LAYOUT}.h\"
 (DIR) diff --git a/drw.c b/drw.c
       @@ -0,0 +1,417 @@
       +/* See LICENSE file for copyright and license details. */
       +#include <stdio.h>
       +#include <stdlib.h>
       +#include <string.h>
       +#include <X11/Xlib.h>
       +#include <X11/Xft/Xft.h>
       +
       +#include "drw.h"
       +#include "util.h"
       +
       +#define UTF_INVALID 0xFFFD
       +#define UTF_SIZ     4
       +
       +static const unsigned char utfbyte[UTF_SIZ + 1] = {0x80,    0, 0xC0, 0xE0, 0xF0};
       +static const unsigned char utfmask[UTF_SIZ + 1] = {0xC0, 0x80, 0xE0, 0xF0, 0xF8};
       +static const long utfmin[UTF_SIZ + 1] = {       0,    0,  0x80,  0x800,  0x10000};
       +static const long utfmax[UTF_SIZ + 1] = {0x10FFFF, 0x7F, 0x7FF, 0xFFFF, 0x10FFFF};
       +
       +static long
       +utf8decodebyte(const char c, size_t *i)
       +{
       +        for (*i = 0; *i < (UTF_SIZ + 1); ++(*i))
       +                if (((unsigned char)c & utfmask[*i]) == utfbyte[*i])
       +                        return (unsigned char)c & ~utfmask[*i];
       +        return 0;
       +}
       +
       +static size_t
       +utf8validate(long *u, size_t i)
       +{
       +        if (!BETWEEN(*u, utfmin[i], utfmax[i]) || BETWEEN(*u, 0xD800, 0xDFFF))
       +                *u = UTF_INVALID;
       +        for (i = 1; *u > utfmax[i]; ++i)
       +                ;
       +        return i;
       +}
       +
       +static size_t
       +utf8decode(const char *c, long *u, size_t clen)
       +{
       +        size_t i, j, len, type;
       +        long udecoded;
       +
       +        *u = UTF_INVALID;
       +        if (!clen)
       +                return 0;
       +        udecoded = utf8decodebyte(c[0], &len);
       +        if (!BETWEEN(len, 1, UTF_SIZ))
       +                return 1;
       +        for (i = 1, j = 1; i < clen && j < len; ++i, ++j) {
       +                udecoded = (udecoded << 6) | utf8decodebyte(c[i], &type);
       +                if (type)
       +                        return j;
       +        }
       +        if (j < len)
       +                return 0;
       +        *u = udecoded;
       +        utf8validate(u, len);
       +
       +        return len;
       +}
       +
       +Drw *
       +drw_create(Display *dpy, int screen, Window root, unsigned int w, unsigned int h)
       +{
       +        Drw *drw = ecalloc(1, sizeof(Drw));
       +
       +        drw->dpy = dpy;
       +        drw->screen = screen;
       +        drw->root = root;
       +        drw->w = w;
       +        drw->h = h;
       +        drw->drawable = XCreatePixmap(dpy, root, w, h, DefaultDepth(dpy, screen));
       +        drw->gc = XCreateGC(dpy, root, 0, NULL);
       +        XSetLineAttributes(dpy, drw->gc, 1, LineSolid, CapButt, JoinMiter);
       +
       +        return drw;
       +}
       +
       +void
       +drw_resize(Drw *drw, unsigned int w, unsigned int h)
       +{
       +        if (!drw)
       +                return;
       +
       +        drw->w = w;
       +        drw->h = h;
       +        if (drw->drawable)
       +                XFreePixmap(drw->dpy, drw->drawable);
       +        drw->drawable = XCreatePixmap(drw->dpy, drw->root, w, h, DefaultDepth(drw->dpy, drw->screen));
       +}
       +
       +void
       +drw_free(Drw *drw)
       +{
       +        XFreePixmap(drw->dpy, drw->drawable);
       +        XFreeGC(drw->dpy, drw->gc);
       +        drw_fontset_free(drw->fonts);
       +        free(drw);
       +}
       +
       +/* This function is an implementation detail. Library users should use
       + * drw_fontset_create instead.
       + */
       +static Fnt *
       +xfont_create(Drw *drw, const char *fontname, FcPattern *fontpattern)
       +{
       +        Fnt *font;
       +        XftFont *xfont = NULL;
       +        FcPattern *pattern = NULL;
       +
       +        if (fontname) {
       +                /* Using the pattern found at font->xfont->pattern does not yield the
       +                 * same substitution results as using the pattern returned by
       +                 * FcNameParse; using the latter results in the desired fallback
       +                 * behaviour whereas the former just results in missing-character
       +                 * rectangles being drawn, at least with some fonts. */
       +                if (!(xfont = XftFontOpenName(drw->dpy, drw->screen, fontname))) {
       +                        fprintf(stderr, "error, cannot load font from name: '%s'\n", fontname);
       +                        return NULL;
       +                }
       +                if (!(pattern = FcNameParse((FcChar8 *) fontname))) {
       +                        fprintf(stderr, "error, cannot parse font name to pattern: '%s'\n", fontname);
       +                        XftFontClose(drw->dpy, xfont);
       +                        return NULL;
       +                }
       +        } else if (fontpattern) {
       +                if (!(xfont = XftFontOpenPattern(drw->dpy, fontpattern))) {
       +                        fprintf(stderr, "error, cannot load font from pattern.\n");
       +                        return NULL;
       +                }
       +        } else {
       +                die("no font specified.");
       +        }
       +
       +        /* Do not allow using color fonts. This is a workaround for a BadLength
       +         * error from Xft with color glyphs. Modelled on the Xterm workaround. See
       +         * https://bugzilla.redhat.com/show_bug.cgi?id=1498269
       +         * https://lists.suckless.org/dev/1701/30932.html
       +         * https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=916349
       +         * and lots more all over the internet.
       +         */
       +        FcBool iscol;
       +        if(FcPatternGetBool(xfont->pattern, FC_COLOR, 0, &iscol) == FcResultMatch && iscol) {
       +                XftFontClose(drw->dpy, xfont);
       +                return NULL;
       +        }
       +
       +        font = ecalloc(1, sizeof(Fnt));
       +        font->xfont = xfont;
       +        font->pattern = pattern;
       +        font->h = xfont->ascent + xfont->descent;
       +        font->dpy = drw->dpy;
       +
       +        return font;
       +}
       +
       +static void
       +xfont_free(Fnt *font)
       +{
       +        if (!font)
       +                return;
       +        if (font->pattern)
       +                FcPatternDestroy(font->pattern);
       +        XftFontClose(font->dpy, font->xfont);
       +        free(font);
       +}
       +
       +Fnt*
       +drw_fontset_create(Drw* drw, const char *fonts[], size_t fontcount)
       +{
       +        Fnt *cur, *ret = NULL;
       +        size_t i;
       +
       +        if (!drw || !fonts)
       +                return NULL;
       +
       +        for (i = 1; i <= fontcount; i++) {
       +                if ((cur = xfont_create(drw, fonts[fontcount - i], NULL))) {
       +                        cur->next = ret;
       +                        ret = cur;
       +                }
       +        }
       +        return (drw->fonts = ret);
       +}
       +
       +void
       +drw_fontset_free(Fnt *font)
       +{
       +        if (font) {
       +                drw_fontset_free(font->next);
       +                xfont_free(font);
       +        }
       +}
       +
       +void
       +drw_clr_create(Drw *drw, Clr *dest, const char *clrname)
       +{
       +        if (!drw || !dest || !clrname)
       +                return;
       +
       +        if (!XftColorAllocName(drw->dpy, DefaultVisual(drw->dpy, drw->screen),
       +                               DefaultColormap(drw->dpy, drw->screen),
       +                               clrname, dest))
       +                die("error, cannot allocate color '%s'", clrname);
       +}
       +
       +/* Wrapper to create color schemes. The caller has to call free(3) on the
       + * returned color scheme when done using it. */
       +Clr *
       +drw_scm_create(Drw *drw, const char *clrnames[], size_t clrcount)
       +{
       +        size_t i;
       +        Clr *ret;
       +
       +        /* need at least two colors for a scheme */
       +        if (!drw || !clrnames || clrcount < 2 || !(ret = ecalloc(clrcount, sizeof(XftColor))))
       +                die("error, cannot create color scheme (drw=%d) (clrcount=%d)", drw, clrcount);
       +
       +        for (i = 0; i < clrcount; i++)
       +                drw_clr_create(drw, &ret[i], clrnames[i]);
       +        return ret;
       +}
       +
       +void
       +drw_setfontset(Drw *drw, Fnt *set)
       +{
       +        if (drw)
       +                drw->fonts = set;
       +}
       +
       +void
       +drw_setscheme(Drw *drw, Clr *scm)
       +{
       +        if (drw)
       +                drw->scheme = scm;
       +}
       +
       +void
       +drw_rect(Drw *drw, int x, int y, unsigned int w, unsigned int h, int filled, int invert)
       +{
       +        if (!drw || !drw->scheme)
       +                return;
       +        XSetForeground(drw->dpy, drw->gc, invert ? drw->scheme[ColBg].pixel : drw->scheme[ColFg].pixel);
       +        if (filled)
       +                XFillRectangle(drw->dpy, drw->drawable, drw->gc, x, y, w, h);
       +        else
       +                XDrawRectangle(drw->dpy, drw->drawable, drw->gc, x, y, w - 1, h - 1);
       +}
       +
       +int
       +drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, unsigned int lpad, const char *text, int invert)
       +{
       +        char buf[1024];
       +        int ty;
       +        unsigned int ew;
       +        XftDraw *d = NULL;
       +        Fnt *usedfont, *curfont, *nextfont;
       +        size_t i, len;
       +        int utf8strlen, utf8charlen, render = x || y || w || h;
       +        long utf8codepoint = 0;
       +        const char *utf8str;
       +        FcCharSet *fccharset;
       +        FcPattern *fcpattern;
       +        FcPattern *match;
       +        XftResult result;
       +        int charexists = 0;
       +
       +        if (!drw || (render && !drw->scheme) || !text || !drw->fonts)
       +                return 0;
       +
       +        if (!render) {
       +                w = ~w;
       +        } else {
       +                XSetForeground(drw->dpy, drw->gc, drw->scheme[invert ? ColFg : ColBg].pixel);
       +                XFillRectangle(drw->dpy, drw->drawable, drw->gc, x, y, w, h);
       +                d = XftDrawCreate(drw->dpy, drw->drawable,
       +                                  DefaultVisual(drw->dpy, drw->screen),
       +                                  DefaultColormap(drw->dpy, drw->screen));
       +                x += lpad;
       +                w -= lpad;
       +        }
       +
       +        usedfont = drw->fonts;
       +        while (1) {
       +                utf8strlen = 0;
       +                utf8str = text;
       +                nextfont = NULL;
       +                while (*text) {
       +                        utf8charlen = utf8decode(text, &utf8codepoint, UTF_SIZ);
       +                        for (curfont = drw->fonts; curfont; curfont = curfont->next) {
       +                                charexists = charexists || XftCharExists(drw->dpy, curfont->xfont, utf8codepoint);
       +                                if (charexists) {
       +                                        if (curfont == usedfont) {
       +                                                utf8strlen += utf8charlen;
       +                                                text += utf8charlen;
       +                                        } else {
       +                                                nextfont = curfont;
       +                                        }
       +                                        break;
       +                                }
       +                        }
       +
       +                        if (!charexists || nextfont)
       +                                break;
       +                        else
       +                                charexists = 0;
       +                }
       +
       +                if (utf8strlen) {
       +                        drw_font_getexts(usedfont, utf8str, utf8strlen, &ew, NULL);
       +                        /* shorten text if necessary */
       +                        for (len = MIN(utf8strlen, sizeof(buf) - 1); len && ew > w; len--)
       +                                drw_font_getexts(usedfont, utf8str, len, &ew, NULL);
       +
       +                        if (len) {
       +                                memcpy(buf, utf8str, len);
       +                                buf[len] = '\0';
       +                                if (len < utf8strlen)
       +                                        for (i = len; i && i > len - 3; buf[--i] = '.')
       +                                                ; /* NOP */
       +
       +                                if (render) {
       +                                        ty = y + (h - usedfont->h) / 2 + usedfont->xfont->ascent;
       +                                        XftDrawStringUtf8(d, &drw->scheme[invert ? ColBg : ColFg],
       +                                                          usedfont->xfont, x, ty, (XftChar8 *)buf, len);
       +                                }
       +                                x += ew;
       +                                w -= ew;
       +                        }
       +                }
       +
       +                if (!*text) {
       +                        break;
       +                } else if (nextfont) {
       +                        charexists = 0;
       +                        usedfont = nextfont;
       +                } else {
       +                        /* Regardless of whether or not a fallback font is found, the
       +                         * character must be drawn. */
       +                        charexists = 1;
       +
       +                        fccharset = FcCharSetCreate();
       +                        FcCharSetAddChar(fccharset, utf8codepoint);
       +
       +                        if (!drw->fonts->pattern) {
       +                                /* Refer to the comment in xfont_create for more information. */
       +                                die("the first font in the cache must be loaded from a font string.");
       +                        }
       +
       +                        fcpattern = FcPatternDuplicate(drw->fonts->pattern);
       +                        FcPatternAddCharSet(fcpattern, FC_CHARSET, fccharset);
       +                        FcPatternAddBool(fcpattern, FC_SCALABLE, FcTrue);
       +                        FcPatternAddBool(fcpattern, FC_COLOR, FcFalse);
       +
       +                        FcConfigSubstitute(NULL, fcpattern, FcMatchPattern);
       +                        FcDefaultSubstitute(fcpattern);
       +                        match = XftFontMatch(drw->dpy, drw->screen, fcpattern, &result);
       +
       +                        FcCharSetDestroy(fccharset);
       +                        FcPatternDestroy(fcpattern);
       +
       +                        if (match) {
       +                                usedfont = xfont_create(drw, NULL, match);
       +                                if (usedfont && XftCharExists(drw->dpy, usedfont->xfont, utf8codepoint)) {
       +                                        for (curfont = drw->fonts; curfont->next; curfont = curfont->next)
       +                                                ; /* NOP */
       +                                        curfont->next = usedfont;
       +                                } else {
       +                                        xfont_free(usedfont);
       +                                        usedfont = drw->fonts;
       +                                }
       +                        }
       +                }
       +        }
       +        if (d)
       +                XftDrawDestroy(d);
       +
       +        return x + (render ? w : 0);
       +}
       +
       +void
       +drw_map(Drw *drw, Window win, int x, int y, unsigned int w, unsigned int h)
       +{
       +        if (!drw)
       +                return;
       +
       +        XCopyArea(drw->dpy, drw->drawable, win, drw->gc, x, y, w, h, x, y);
       +}
       +
       +void
       +drw_sync(Drw *drw) {
       +    XSync(drw->dpy, False);
       +}
       +
       +unsigned int
       +drw_fontset_getwidth(Drw *drw, const char *text)
       +{
       +        if (!drw || !drw->fonts || !text)
       +                return 0;
       +        return drw_text(drw, 0, 0, 0, 0, 0, text, 0);
       +}
       +
       +void
       +drw_font_getexts(Fnt *font, const char *text, unsigned int len, unsigned int *w, unsigned int *h)
       +{
       +        XGlyphInfo ext;
       +
       +        if (!font || !text)
       +                return;
       +
       +        XftTextExtentsUtf8(font->dpy, font->xfont, (XftChar8 *)text, len, &ext);
       +        if (w)
       +                *w = ext.xOff;
       +        if (h)
       +                *h = font->h;
       +}
 (DIR) diff --git a/drw.h b/drw.h
       @@ -0,0 +1,51 @@
       +/* See LICENSE file for copyright and license details. */
       +
       +typedef struct Fnt {
       +        Display *dpy;
       +        unsigned int h;
       +        XftFont *xfont;
       +        FcPattern *pattern;
       +        struct Fnt *next;
       +} Fnt;
       +
       +enum { ColFg, ColBg }; /* Clr scheme index */
       +typedef XftColor Clr;
       +
       +typedef struct {
       +        unsigned int w, h;
       +        Display *dpy;
       +        int screen;
       +        Window root;
       +        Drawable drawable;
       +        GC gc;
       +        Clr *scheme;
       +        Fnt *fonts;
       +} Drw;
       +
       +/* Drawable abstraction */
       +Drw *drw_create(Display *dpy, int screen, Window win, unsigned int w, unsigned int h);
       +void drw_resize(Drw *drw, unsigned int w, unsigned int h);
       +void drw_free(Drw *drw);
       +
       +/* Fnt abstraction */
       +Fnt *drw_fontset_create(Drw* drw, const char *fonts[], size_t fontcount);
       +void drw_fontset_free(Fnt* set);
       +unsigned int drw_fontset_getwidth(Drw *drw, const char *text);
       +void drw_font_getexts(Fnt *font, const char *text, unsigned int len, unsigned int *w, unsigned int *h);
       +
       +/* Colorscheme abstraction */
       +void drw_clr_create(Drw *drw, Clr *dest, const char *clrname);
       +Clr *drw_scm_create(Drw *drw, const char *clrnames[], size_t clrcount);
       +
       +
       +/* Drawing context manipulation */
       +void drw_setfontset(Drw *drw, Fnt *set);
       +void drw_setscheme(Drw *drw, Clr *scm);
       +
       +/* Drawing functions */
       +void drw_rect(Drw *drw, int x, int y, unsigned int w, unsigned int h, int filled, int invert);
       +int drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, unsigned int lpad, const char *text, int invert);
       +
       +/* Map functions */
       +void drw_map(Drw *drw, Window win, int x, int y, unsigned int w, unsigned int h);
       +void drw_sync(Drw *drw);
 (DIR) diff --git a/layout.sxmo.h b/layout.sxmo.h
       @@ -37,20 +37,20 @@ static Key keys_en[40] = {
                { 0, XK_m, 1 },
                /*{ "/?", XK_slash, 1 },*/
                { "Tab", XK_Tab, 1 },
       -        { "<-", XK_BackSpace, 2 },
       +        { "⇍ Bksp", XK_BackSpace, 2 },
        
                { 0 }, /* New row */
       -        { "Layer 2", XK_Cancel, 1},
       -        { "Shift", XK_Shift_L, 1 },
       +        { "↺", XK_Cancel, 1},
       +        { "Shft", XK_Shift_L, 1 },
                /*{ "L", XK_Left, 1 },*/
       -        { "D", XK_Down, 1 },
       -        { "U", XK_Up, 1 },
       +        { "↓", XK_Down, 1 },
       +        { "↑", XK_Up, 1 },
                /*{ "R", XK_Right, 1 },*/
                { "", XK_space, 2 },
                { "Esc", XK_Escape, 1 },
                { "Ctrl", XK_Control_L, 1 },
                /*{ "Alt", XK_Alt_L, 1 },*/
       -        { "Enter", XK_Return, 2 },
       +        { "↲ Enter", XK_Return, 2 },
        };
        
        static Key keys_symbols[40] = {
       @@ -80,28 +80,28 @@ static Key keys_symbols[40] = {
        
          { 0 }, /* New row */
        
       -  { " ", XK_Shift_L|XK_bar, 1 },
       -  { " ", XK_Shift_L|XK_bar, 1 },
       -  { "L", XK_Left, 1 },
       -  { "R", XK_Right, 1 },
       -  { " ", XK_Shift_L|XK_bar, 1 },
       -  { " ", XK_Shift_L|XK_bar, 1 },
       -  { " ", XK_Shift_L|XK_bar, 1 },
       +  { "", XK_Shift_L|XK_bar, 1 },
       +  { "⇤", XK_Home, 1 },
       +  { "←", XK_Left, 1 },
       +  { "→", XK_Right, 1 },
       +  { "⇥", XK_End, 1 },
       +  { "⇊", XK_Next, 1 },
       +  { "⇈", XK_Prior, 1 },
          { "Tab", XK_Tab, 1 },
       -  { "<-", XK_BackSpace, 2 },
       +  { "⇍ Bksp", XK_BackSpace, 2 },
        
          { 0 }, /* New row */
       -  { "Layer 1", XK_Cancel, 1},
       -  { "Shift", XK_Shift_L, 1 },
       +  { "↺", XK_Cancel, 1},
       +  { "Shft", XK_Shift_L, 1 },
          /*{ "L", XK_Left, 1 },*/
       -  { "D", XK_Down, 1 },
       -  { "U", XK_Up, 1 },
       +  { "↓", XK_Down, 1 },
       +  { "↑", XK_Up, 1 },
          /*{ "R", XK_Right, 1 },*/
          { "", XK_space, 2 },
          { "Esc", XK_Escape, 1 },
          { "Ctrl", XK_Control_L, 1 },
          /*{ "Alt", XK_Alt_L, 1 },*/
       -  { "Enter", XK_Return, 2 },
       +  { "↲ Enter", XK_Return, 2 },
        };
        
        Buttonmod buttonmods[] = {
 (DIR) diff --git a/svkbd.c b/svkbd.c
       @@ -13,16 +13,24 @@
        #include <X11/Xutil.h>
        #include <X11/Xproto.h>
        #include <X11/extensions/XTest.h>
       +#include <X11/Xft/Xft.h>
       +#ifdef XINERAMA
       +#include <X11/extensions/Xinerama.h>
       +#endif
        #include <signal.h>
        #include <sys/select.h>
        
       +#include "drw.h"
       +#include "util.h"
       +
       +
        
        /* macros */
       -#define MAX(a, b)       ((a) > (b) ? (a) : (b))
        #define LENGTH(x)       (sizeof x / sizeof x[0])
       +#define TEXTW(X)        (drw_fontset_getwidth(drw, (X)))
        
        /* enums */
       -enum { ColFG, ColBG, ColLast };
       +enum { SchemeNorm, SchemePress, SchemeHighlight, SchemeLast };
        enum { NetWMWindowType, NetLast };
        
        /* typedefs */
       @@ -30,22 +38,6 @@ typedef unsigned int uint;
        typedef unsigned long ulong;
        
        typedef struct {
       -        ulong norm[ColLast];
       -        ulong press[ColLast];
       -        ulong high[ColLast];
       -
       -        Drawable drawable;
       -        GC gc;
       -        struct {
       -                int ascent;
       -                int descent;
       -                int height;
       -                XFontSet set;
       -                XFontStruct *xfont;
       -        } font;
       -} DC; /* draw context */
       -
       -typedef struct {
                char *label;
                KeySym keysym;
                uint width;
       @@ -66,18 +58,15 @@ static void buttonrelease(XEvent *e);
        static void cleanup(void);
        static void configurenotify(XEvent *e);
        static void countrows();
       -static void die(const char *errstr, ...);
        static void drawkeyboard(void);
        static void drawkey(Key *k);
        static void expose(XEvent *e);
        static Key *findkey(int x, int y);
       -static ulong getcolor(const char *colstr);
       -static void initfont(const char *fontstr);
        static void leavenotify(XEvent *e);
        static void press(Key *k, KeySym mod);
        static void run(void);
        static void setup(void);
       -static int textnw(const char *text, uint len);
       +static void togglelayer();
        static void unpress(Key *k, KeySym mod);
        static void updatekeys();
        
       @@ -93,8 +82,9 @@ static void (*handler[LASTEvent]) (XEvent *) = {
        };
        static Atom netatom[NetLast];
        static Display *dpy;
       -static DC dc;
       +static Drw *drw;
        static Window root, win;
       +static Clr* scheme[SchemeLast];
        static Bool running = True, isdock = False;
        static KeySym pressedmod = 0;
        static int rows = 0, ww = 0, wh = 0, wx = 0, wy = 0;
       @@ -203,14 +193,12 @@ cleanup(void) {
                                XTestFakeKeyEvent(dpy, XKeysymToKeycode(dpy, keys[i].keysym), False, 0);
                        }
                }
       -        XSync(dpy, False);
        
       -        if(dc.font.set)
       -                XFreeFontSet(dpy, dc.font.set);
       -        else
       -                XFreeFont(dpy, dc.font.xfont);
       -        XFreePixmap(dpy, dc.drawable);
       -        XFreeGC(dpy, dc.gc);
       +        for (i = 0; i < SchemeLast; i++)
       +                free(scheme[i]);
       +        drw_free(drw);
       +        drw_sync(drw);
       +        XSync(dpy, False);
                XDestroyWindow(dpy, win);
                XSync(dpy, False);
                XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
       @@ -223,9 +211,7 @@ configurenotify(XEvent *e) {
                if(ev->window == win && (ev->width != ww || ev->height != wh)) {
                        ww = ev->width;
                        wh = ev->height;
       -                XFreePixmap(dpy, dc.drawable);
       -                dc.drawable = XCreatePixmap(dpy, root, ww, wh,
       -                                DefaultDepth(dpy, screen));
       +                drw_resize(drw, ww, wh);
                        updatekeys();
                }
        }
       @@ -240,15 +226,6 @@ countrows() {
                }
        }
        
       -void
       -die(const char *errstr, ...) {
       -        va_list ap;
       -
       -        va_start(ap, errstr);
       -        vfprintf(stderr, errstr, ap);
       -        va_end(ap);
       -        exit(EXIT_FAILURE);
       -}
        
        void
        drawkeyboard(void) {
       @@ -262,42 +239,29 @@ drawkeyboard(void) {
        
        void
        drawkey(Key *k) {
       -        int x, y, h, len;
       -        XRectangle r = { k->x, k->y, k->w, k->h};
       +        int x, y, w, h;
                const char *l;
       -        ulong *col;
        
                if(k->pressed)
       -                col = dc.press;
       +                drw_setscheme(drw, scheme[SchemePress]);
                else if(k->highlighted)
       -                col = dc.high;
       +                drw_setscheme(drw, scheme[SchemeHighlight]);
                else
       -                col = dc.norm;
       -
       -        XSetForeground(dpy, dc.gc, col[ColBG]);
       -        XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
       -        XSetForeground(dpy, dc.gc, dc.norm[ColFG]);
       -        r.height -= 1;
       -        r.width -= 1;
       -        XDrawRectangles(dpy, dc.drawable, dc.gc, &r, 1);
       -        XSetForeground(dpy, dc.gc, col[ColFG]);
       +                drw_setscheme(drw, scheme[SchemeNorm]);
       +        drw_rect(drw, k->x, k->y, k->w, k->h, 1, 1);
       +        drw_rect(drw, k->x, k->y, k->w, k->h, 0, 0);
       +
                if(k->label) {
                        l = k->label;
                } else {
                        l = XKeysymToString(k->keysym);
                }
       -        len = strlen(l);
       -        h = dc.font.ascent + dc.font.descent;
       -        y = k->y + (k->h / 2) - (h / 2) + dc.font.ascent;
       -        x = k->x + (k->w / 2) - (textnw(l, len) / 2);
       -        if(dc.font.set) {
       -                XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, l,
       -                                len);
       -        } else {
       -                XDrawString(dpy, dc.drawable, dc.gc, x, y, l, len);
       -        }
       -        XCopyArea(dpy, dc.drawable, win, dc.gc, k->x, k->y, k->w, k->h,
       -                        k->x, k->y);
       +        h = fontsize * 2;
       +        y = k->y + (k->h / 2) - (h / 2);
       +        w = TEXTW(l);
       +        x = k->x + (k->w / 2) - (w / 2);
       +        drw_text(drw, x, y, w, h, 0, l, 0);
       +        drw_map(drw, win, k->x, k->y, k->w, k->h);
        }
        
        void
       @@ -322,52 +286,7 @@ findkey(int x, int y) {
                return NULL;
        }
        
       -ulong
       -getcolor(const char *colstr) {
       -        Colormap cmap = DefaultColormap(dpy, screen);
       -        XColor color;
        
       -        if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color))
       -                die("error, cannot allocate color '%s'\n", colstr);
       -        return color.pixel;
       -}
       -
       -void
       -initfont(const char *fontstr) {
       -        char *def, **missing;
       -        int i, n;
       -
       -        missing = NULL;
       -        if(dc.font.set)
       -                XFreeFontSet(dpy, dc.font.set);
       -        dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
       -        if(missing) {
       -                while(n--)
       -                        fprintf(stderr, "svkbd: missing fontset: %s\n", missing[n]);
       -                XFreeStringList(missing);
       -        }
       -        if(dc.font.set) {
       -                XFontStruct **xfonts;
       -                char **font_names;
       -                dc.font.ascent = dc.font.descent = 0;
       -                n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
       -                for(i = 0, dc.font.ascent = 0, dc.font.descent = 0; i < n; i++) {
       -                        dc.font.ascent = MAX(dc.font.ascent, (*xfonts)->ascent);
       -                        dc.font.descent = MAX(dc.font.descent,(*xfonts)->descent);
       -                        xfonts++;
       -                }
       -        } else {
       -                if(dc.font.xfont)
       -                        XFreeFont(dpy, dc.font.xfont);
       -                dc.font.xfont = NULL;
       -                if(!(dc.font.xfont = XLoadQueryFont(dpy, fontstr))
       -                && !(dc.font.xfont = XLoadQueryFont(dpy, "fixed")))
       -                        die("error, cannot load font: '%s'\n", fontstr);
       -                dc.font.ascent = dc.font.xfont->ascent;
       -                dc.font.descent = dc.font.xfont->descent;
       -        }
       -        dc.font.height = dc.font.ascent + dc.font.descent;
       -}
        
        void
        leavenotify(XEvent *e) {
       @@ -487,15 +406,36 @@ setup(void) {
                XSizeHints *sizeh = NULL;
                XClassHint *ch;
                Atom atype = -1;
       -        int i, sh, sw;
       +        int i, j, sh, sw;
                XWMHints *wmh;
        
       +        #if XINERAMA
       +        XineramaScreenInfo *info = NULL;
       +        #endif
       +
                /* init screen */
                screen = DefaultScreen(dpy);
                root = RootWindow(dpy, screen);
       -        sw = DisplayWidth(dpy, screen);
       -        sh = DisplayHeight(dpy, screen);
       -        initfont(font);
       +        #if XINERAMA
       +        if(XineramaIsActive(dpy)) {
       +                info = XineramaQueryScreens(dpy, &i);
       +                sw = info[0].width;
       +                sh = info[0].height;
       +                XFree(info);
       +        } else
       +        #endif
       +        {
       +                sw = DisplayWidth(dpy, screen);
       +                sh = DisplayHeight(dpy, screen);
       +        }
       +    drw = drw_create(dpy, screen, root, sw, sh);
       +        if (!drw_fontset_create(drw, fonts, LENGTH(fonts)))
       +                die("no fonts could be loaded.");
       +    drw_setscheme(drw, scheme[SchemeNorm]);
       +
       +        /* init appearance */
       +        for (j = 0; j < SchemeLast; j++)
       +                scheme[j] = drw_scm_create(drw, colors[j], 2);
        
                /* init atoms */
                if(isdock) {
       @@ -520,23 +460,12 @@ setup(void) {
                if(wy < 0)
                        wy = sh + wy - wh;
        
       -        dc.norm[ColBG] = getcolor(normbgcolor);
       -        dc.norm[ColFG] = getcolor(normfgcolor);
       -        dc.press[ColBG] = getcolor(pressbgcolor);
       -        dc.press[ColFG] = getcolor(pressfgcolor);
       -        dc.high[ColBG] = getcolor(highlightbgcolor);
       -        dc.high[ColFG] = getcolor(highlightfgcolor);
       -        dc.drawable = XCreatePixmap(dpy, root, ww, wh,
       -                        DefaultDepth(dpy, screen));
       -        dc.gc = XCreateGC(dpy, root, 0, 0);
       -        if(!dc.font.set)
       -                XSetFont(dpy, dc.gc, dc.font.xfont->fid);
                for(i = 0; i < LENGTH(keys); i++)
                        keys[i].pressed = 0;
        
                wa.override_redirect = !wmborder;
       -        wa.border_pixel = dc.norm[ColFG];
       -        wa.background_pixel = dc.norm[ColBG];
       +        wa.border_pixel = scheme[SchemeNorm][ColFg].pixel;
       +        wa.background_pixel = scheme[SchemeNorm][ColBg].pixel;
                win = XCreateWindow(dpy, root, wx, wy, ww, wh, 0,
                                    CopyFromParent, CopyFromParent, CopyFromParent,
                                    CWOverrideRedirect | CWBorderPixel |
       @@ -575,20 +504,11 @@ setup(void) {
                }
        
                XMapRaised(dpy, win);
       +        drw_resize(drw, ww, wh);
                updatekeys();
                drawkeyboard();
        }
        
       -int
       -textnw(const char *text, uint len) {
       -        XRectangle r;
       -
       -        if(dc.font.set) {
       -                XmbTextExtents(dc.font.set, text, len, NULL, &r);
       -                return r.width;
       -        }
       -        return XTextWidth(dc.font.xfont, text, len);
       -}
        
        void
        updatekeys() {
       @@ -642,7 +562,7 @@ main(int argc, char *argv[]) {
                signal(SIGTERM, sigterm);
                for (i = 1; argv[i]; i++) {
                        if(!strcmp(argv[i], "-v")) {
       -                        die("svkbd-"VERSION", © 2006-2016 svkbd engineers,"
       +                        die("svkbd-"VERSION", © 2006-2020 svkbd engineers,"
                                               " see LICENSE for details\n");
                        } else if(!strcmp(argv[i], "-d")) {
                                isdock = True;
 (DIR) diff --git a/util.c b/util.c
       @@ -0,0 +1,35 @@
       +/* See LICENSE file for copyright and license details. */
       +#include <stdarg.h>
       +#include <stdio.h>
       +#include <stdlib.h>
       +#include <string.h>
       +
       +#include "util.h"
       +
       +void *
       +ecalloc(size_t nmemb, size_t size)
       +{
       +        void *p;
       +
       +        if (!(p = calloc(nmemb, size)))
       +                die("calloc:");
       +        return p;
       +}
       +
       +void
       +die(const char *fmt, ...) {
       +        va_list ap;
       +
       +        va_start(ap, fmt);
       +        vfprintf(stderr, fmt, ap);
       +        va_end(ap);
       +
       +        if (fmt[0] && fmt[strlen(fmt)-1] == ':') {
       +                fputc(' ', stderr);
       +                perror(NULL);
       +        } else {
       +                fputc('\n', stderr);
       +        }
       +
       +        exit(1);
       +}
 (DIR) diff --git a/util.h b/util.h
       @@ -0,0 +1,8 @@
       +/* See LICENSE file for copyright and license details. */
       +
       +#define MAX(A, B)               ((A) > (B) ? (A) : (B))
       +#define MIN(A, B)               ((A) < (B) ? (A) : (B))
       +#define BETWEEN(X, A, B)        ((A) <= (X) && (X) <= (B))
       +
       +void die(const char *fmt, ...);
       +void *ecalloc(size_t nmemb, size_t size);