tinitial checkin. - svkbd - Simple X11 onscreen keyboard.
(HTM) git clone git://r-36.net/svkbd
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---
(DIR) commit 5f9a5d2068f288f4f5067265bd48fe65561248f4
(HTM) Author: Enno Boland (Gottox) <gottox@s01.de>
Date: Tue, 15 Jul 2008 18:53:38 +0200
initial checkin.
Diffstat:
Makefile | 60 +++++++++++++++++++++++++++++++
config.def.h | 13 +++++++++++++
config.h | 14 ++++++++++++++
config.mk | 27 +++++++++++++++++++++++++++
svkbd.c | 358 +++++++++++++++++++++++++++++++
5 files changed, 472 insertions(+), 0 deletions(-)
---
(DIR) diff --git a/Makefile b/Makefile
t@@ -0,0 +1,60 @@
+# svkbd - simple virtual keyboard
+# See LICENSE file for copyright and license details.
+
+include config.mk
+
+SRC = svkbd.c
+OBJ = ${SRC:.c=.o}
+
+all: options svkbd
+
+options:
+ @echo svkbd build options:
+ @echo "CFLAGS = ${CFLAGS}"
+ @echo "LDFLAGS = ${LDFLAGS}"
+ @echo "CC = ${CC}"
+
+.c.o:
+ @echo CC $<
+ @${CC} -c ${CFLAGS} $<
+
+${OBJ}: config.h config.mk
+
+config.h:
+ @echo creating $@ from config.def.h
+ @cp config.def.h $@
+
+svkbd: ${OBJ}
+ @echo CC -o $@
+ @${CC} -o $@ ${OBJ} ${LDFLAGS}
+
+clean:
+ @echo cleaning
+ @rm -f svkbd ${OBJ} svkbd-${VERSION}.tar.gz
+
+dist: clean
+ @echo creating dist tarball
+ @mkdir -p svkbd-${VERSION}
+ @cp -R LICENSE Makefile README config.def.h config.mk \
+ ${SRC} svkbd-${VERSION}
+ @tar -cf svkbd-${VERSION}.tar svkbd-${VERSION}
+ @gzip svkbd-${VERSION}.tar
+ @rm -rf svkbd-${VERSION}
+
+install: all
+ @echo installing executable file to ${DESTDIR}${PREFIX}/bin
+ @mkdir -p ${DESTDIR}${PREFIX}/bin
+ @cp -f svkbd ${DESTDIR}${PREFIX}/bin
+ @chmod 755 ${DESTDIR}${PREFIX}/bin/svkbd
+ @echo installing manual page to ${DESTDIR}${MANPREFIX}/man1
+ @mkdir -p ${DESTDIR}${MANPREFIX}/man1
+ @sed "s/VERSION/${VERSION}/g" < svkbd.1 > ${DESTDIR}${MANPREFIX}/man1/svkbd.1
+ @chmod 644 ${DESTDIR}${MANPREFIX}/man1/svkbd.1
+
+uninstall:
+ @echo removing executable file from ${DESTDIR}${PREFIX}/bin
+ @rm -f ${DESTDIR}${PREFIX}/bin/svkbd
+ @echo removing manual page from ${DESTDIR}${MANPREFIX}/man1
+ @rm -f ${DESTDIR}${MANPREFIX}/man1/svkbd.1
+
+.PHONY: all options clean dist install uninstall
(DIR) diff --git a/config.def.h b/config.def.h
t@@ -0,0 +1,13 @@
+static const char font[] = "-*-terminus-medium-r-normal-*-14-*-*-*-*-*-*-*";
+static const char normbgcolor[] = "#cccccc";
+static const char normfgcolor[] = "#000000";
+static const char selbgcolor[] = "#0066ff";
+static const char selfgcolor[] = "#ffffff";
+static const char hovbgcolor[] = "#0066ff";
+static const char hovfgcolor[] = "#cccccc";
+
+static Key keys[] = {
+ { 1, XK_Return },
+ { 0 },
+ { 1, XK_space },
+};
(DIR) diff --git a/config.h b/config.h
t@@ -0,0 +1,14 @@
+static const char font[] = "-*-terminus-medium-r-normal-*-14-*-*-*-*-*-*-*";
+static const char normbgcolor[] = "#cccccc";
+static const char normfgcolor[] = "#000000";
+static const char selbgcolor[] = "#0066ff";
+static const char selfgcolor[] = "#ffffff";
+static const char hovbgcolor[] = "#0066ff";
+static const char hovfgcolor[] = "#cccccc";
+
+static Key keys[] = {
+ { 2, XK_Return },
+ { 1, XK_space },
+ { 0 },
+ { 1, XK_space },
+};
(DIR) diff --git a/config.mk b/config.mk
t@@ -0,0 +1,27 @@
+# svkbd version
+VERSION = 0.1
+
+# Customize below to fit your system
+
+# paths
+PREFIX = /usr/local
+MANPREFIX = ${PREFIX}/share/man
+
+X11INC = /usr/X11R6/include
+X11LIB = /usr/X11R6/lib
+
+# includes and libs
+INCS = -I. -I/usr/include -I${X11INC}
+LIBS = -L/usr/lib -lc -L${X11LIB} -lX11
+
+# flags
+CPPFLAGS = -DVERSION=\"${VERSION}\" ${XINERAMAFLAGS}
+CFLAGS = -g -std=c99 -pedantic -Wall -Os ${INCS} ${CPPFLAGS}
+LDFLAGS = -g ${LIBS}
+
+# Solaris
+#CFLAGS = -fast ${INCS} -DVERSION=\"${VERSION}\"
+#LDFLAGS = ${LIBS}
+
+# compiler and linker
+CC = cc
(DIR) diff --git a/svkbd.c b/svkbd.c
t@@ -0,0 +1,358 @@
+/* See LICENSE file for copyright and license details.
+ *
+ * dynamic window manager is designed like any other X client as well. It is
+ * driven through handling X events. In contrast to other X clients, a window
+ * manager selects for SubstructureRedirectMask on the root window, to receive
+ * events about window (dis-)appearance. Only one X connection at a time is
+ * allowed to select for this event mask.
+ *
+ * Calls to fetch an X event from the event queue are blocking. Due reading
+ * status text from standard input, a select()-driven main loop has been
+ * implemented which selects for reads on the X connection and STDIN_FILENO to
+ * handle all data smoothly. The event handlers of dwm are organized in an
+ * array which is accessed whenever a new event has been fetched. This allows
+ * event dispatching in O(1) time.
+ *
+ * Each child of the root window is called a client, except windows which have
+ * set the override_redirect flag. Clients are organized in a global
+ * doubly-linked client list, the focus history is remembered through a global
+ * stack list. Each client contains a bit array to indicate the tags of a
+ * client.
+ *
+ * Keys and tagging rules are organized as arrays and defined in config.h.
+ *
+ * To understand everything else, start reading main().
+ */
+#include <errno.h>
+#include <locale.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/select.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <X11/cursorfont.h>
+#include <X11/keysym.h>
+#include <X11/Xatom.h>
+#include <X11/Xlib.h>
+#include <X11/Xproto.h>
+#include <X11/Xutil.h>
+#ifdef XINERAMA
+#include <X11/extensions/Xinerama.h>
+#endif
+
+/* macros */
+#define MAX(a, b) ((a) > (b) ? (a) : (b))
+#define MIN(a, b) ((a) < (b) ? (a) : (b))
+#define BUTTONMASK (ButtonPressMask|ButtonReleaseMask)
+#define CLEANMASK(mask) (mask & ~(numlockmask|LockMask))
+#define LENGTH(x) (sizeof x / sizeof x[0])
+#define MAXMOD 16
+#define MOUSEMASK (BUTTONMASK|PointerMotionMask)
+#define TAGMASK ((int)((1LL << LENGTH(tags)) - 1))
+#define TEXTW(x) (textnw(x, strlen(x)) + dc.font.height)
+#define ISVISIBLE(x) (x->tags & tagset[seltags])
+
+/* enums */
+enum { ColFG, ColBG, ColLast };
+
+/* typedefs */
+typedef unsigned int uint;
+typedef unsigned long ulong;
+
+typedef struct {
+ ulong norm[ColLast];
+ ulong sel[ColLast];
+ ulong hover[ColLast];
+ Drawable drawable;
+ GC gc;
+ struct {
+ int ascent;
+ int descent;
+ int height;
+ XFontSet set;
+ XFontStruct *xfont;
+ } font;
+} DC; /* draw context */
+
+typedef struct {
+ uint width;
+ KeySym keysym;
+ int x, y, w, h;
+ Bool sel;
+} Key;
+
+/* function declarations */
+static void buttonpress(XEvent *e);
+static void cleanup(void);
+static void configurenotify(XEvent *e);
+static void destroynotify(XEvent *e);
+static void die(const char *errstr, ...);
+static void drawkeyboard(void);
+static void drawkey(Key *k, ulong col[ColLast]);
+static void expose(XEvent *e);
+static ulong getcolor(const char *colstr);
+static void initfont(const char *fontstr);
+static void leavenotify(XEvent *e);
+static void motionnotify(XEvent *e);
+static void run(void);
+static void setup(void);
+static int textnw(const char *text, uint len);
+
+/* variables */
+static int screen;
+static int wx, wy, ww, wh;
+static void (*handler[LASTEvent]) (XEvent *) = {
+ [ButtonPress] = buttonpress,
+ [ConfigureNotify] = configurenotify,
+ [DestroyNotify] = destroynotify,
+ [Expose] = expose,
+ [LeaveNotify] = leavenotify,
+ [MotionNotify] = motionnotify,
+};
+static Display *dpy;
+static DC dc;
+static Window root, win;
+static Bool running = True;
+/* configuration, allows nested code to access above variables */
+#include "config.h"
+
+void
+buttonpress(XEvent *e) {
+}
+
+void
+cleanup(void) {
+ if(dc.font.set)
+ XFreeFontSet(dpy, dc.font.set);
+ else
+ XFreeFont(dpy, dc.font.xfont);
+ XFreePixmap(dpy, dc.drawable);
+ XFreeGC(dpy, dc.gc);
+ XDestroyWindow(dpy, win);
+ XSync(dpy, False);
+ XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
+}
+
+void
+configurenotify(XEvent *e) {
+ XConfigureEvent *ev = &e->xconfigure;
+
+ 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));
+ drawkeyboard();
+ }
+}
+
+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) {
+ int rows, i, j;
+ int x = 0, y = 0, h, base;
+
+ for(i = 0, rows = 1; i < LENGTH(keys); i++)
+ if(keys[i].keysym == 0)
+ rows++;
+ h = wh / rows;
+ for(i = 0; i < LENGTH(keys); i++) {
+ for(j = i, base = 0; j < LENGTH(keys) && keys[j].keysym != 0; j++)
+ base += keys[j].width;
+ for(x = 0; i < LENGTH(keys) && keys[i].keysym != 0; i++) {
+ keys[i].x = x;
+ keys[i].y = y;
+ keys[i].w = keys[i].width * ww / base;
+ keys[i].h = h;
+ x += keys[i].w;
+ printf("%i %i %i %i\n", x, y, keys[i].w, h);
+ }
+ y += h;
+ }
+ for(i = 0; i < LENGTH(keys); i++) {
+ if(keys[i].keysym != 0)
+ drawkey(&keys[i], dc.norm);
+ }
+ XSync(dpy, False);
+ XCopyArea(dpy, dc.drawable, win, dc.gc, 0, 0, ww, wh, 0, 0);
+}
+
+void
+drawkey(Key *k, ulong col[ColLast]) {
+ int x, y, h, len;
+ XRectangle r = { k->x, k->y, k->w, k->h};
+ const char *text;
+
+ XSetForeground(dpy, dc.gc, col[ColBG]);
+ XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
+ XSetForeground(dpy, dc.gc, col[ColFG]);
+ XDrawRectangles(dpy, dc.drawable, dc.gc, &r, 1);
+ text = XKeysymToString(k->keysym);
+ len = strlen(text);
+ 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(text, len) / 2);
+ if(dc.font.set)
+ XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, text, len);
+ else
+ XDrawString(dpy, dc.drawable, dc.gc, x, y, text, len);
+}
+
+void
+destroynotify(XEvent *e) {
+
+}
+
+void
+expose(XEvent *e) {
+ XExposeEvent *ev = &e->xexpose;
+
+ if(ev->count == 0 && (ev->window == win))
+ drawkeyboard();
+}
+
+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, "dwm: missing fontset: %s\n", missing[n]);
+ XFreeStringList(missing);
+ }
+ if(dc.font.set) {
+ XFontSetExtents *font_extents;
+ XFontStruct **xfonts;
+ char **font_names;
+ dc.font.ascent = dc.font.descent = 0;
+ font_extents = XExtentsOfFontSet(dc.font.set);
+ 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) {
+
+}
+
+void
+motionnotify(XEvent *e) {
+
+}
+
+void
+run(void) {
+ XEvent ev;
+
+ /* main event loop, also reads status text from stdin */
+ XSync(dpy, False);
+ while(running) {
+ XNextEvent(dpy, &ev);
+ if(handler[ev.type])
+ (handler[ev.type])(&ev); /* call handler */
+ }
+}
+
+void
+setup(void) {
+ /* init screen */
+ screen = DefaultScreen(dpy);
+ root = RootWindow(dpy, screen);
+ initfont(font);
+
+ /* init appearance */
+ ww = DisplayWidth(dpy, screen);
+ wh = 200;
+ wx = 0;
+ wy = DisplayHeight(dpy, screen) - wh;
+ dc.norm[ColBG] = getcolor(normbgcolor);
+ dc.norm[ColFG] = getcolor(normfgcolor);
+ dc.sel[ColBG] = getcolor(selbgcolor);
+ dc.sel[ColFG] = getcolor(selfgcolor);
+ dc.hover[ColBG] = getcolor(hovbgcolor);
+ dc.hover[ColFG] = getcolor(hovfgcolor);
+ 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);
+
+ win = XCreateSimpleWindow(dpy, root, wx, wy, ww, wh, 0, dc.norm[ColFG], dc.norm[ColBG]);
+ XSelectInput(dpy, win, StructureNotifyMask | PointerMotionMask | ExposureMask);
+ XMapRaised(dpy, win);
+ 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);
+}
+
+int
+main(int argc, char *argv[]) {
+ if(argc == 2 && !strcmp("-v", argv[1]))
+ die("svkc-"VERSION", © 2006-2008 svkbd engineers, see LICENSE for details\n");
+ else if(argc != 1)
+ die("usage: svkbd [-v]\n");
+
+ if(!setlocale(LC_CTYPE, "") || !XSupportsLocale())
+ fprintf(stderr, "warning: no locale support\n");
+
+ if(!(dpy = XOpenDisplay(0)))
+ die("svkbd: cannot open display\n");
+
+ setup();
+ run();
+ cleanup();
+
+ XCloseDisplay(dpy);
+ return 0;
+}