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@ -0,0 +1,358 @@
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/* See LICENSE file for copyright and license details.
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*
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* dynamic window manager is designed like any other X client as well. It is
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* driven through handling X events. In contrast to other X clients, a window
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* manager selects for SubstructureRedirectMask on the root window, to receive
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* events about window (dis-)appearance. Only one X connection at a time is
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* allowed to select for this event mask.
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*
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* Calls to fetch an X event from the event queue are blocking. Due reading
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* status text from standard input, a select()-driven main loop has been
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* implemented which selects for reads on the X connection and STDIN_FILENO to
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* handle all data smoothly. The event handlers of dwm are organized in an
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* array which is accessed whenever a new event has been fetched. This allows
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* event dispatching in O(1) time.
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*
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* Each child of the root window is called a client, except windows which have
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* set the override_redirect flag. Clients are organized in a global
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* doubly-linked client list, the focus history is remembered through a global
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* stack list. Each client contains a bit array to indicate the tags of a
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* client.
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*
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* Keys and tagging rules are organized as arrays and defined in config.h.
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*
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* To understand everything else, start reading main().
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*/
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#include <errno.h>
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#include <locale.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/select.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <X11/cursorfont.h>
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#include <X11/keysym.h>
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#include <X11/Xatom.h>
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#include <X11/Xlib.h>
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#include <X11/Xproto.h>
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#include <X11/Xutil.h>
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#ifdef XINERAMA
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#include <X11/extensions/Xinerama.h>
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#endif
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/* macros */
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#define MAX(a, b) ((a) > (b) ? (a) : (b))
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#define MIN(a, b) ((a) < (b) ? (a) : (b))
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#define BUTTONMASK (ButtonPressMask|ButtonReleaseMask)
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#define CLEANMASK(mask) (mask & ~(numlockmask|LockMask))
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#define LENGTH(x) (sizeof x / sizeof x[0])
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#define MAXMOD 16
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#define MOUSEMASK (BUTTONMASK|PointerMotionMask)
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#define TAGMASK ((int)((1LL << LENGTH(tags)) - 1))
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#define TEXTW(x) (textnw(x, strlen(x)) + dc.font.height)
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#define ISVISIBLE(x) (x->tags & tagset[seltags])
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/* enums */
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enum { ColFG, ColBG, ColLast };
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/* typedefs */
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typedef unsigned int uint;
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typedef unsigned long ulong;
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typedef struct {
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ulong norm[ColLast];
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ulong sel[ColLast];
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ulong hover[ColLast];
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Drawable drawable;
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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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int height;
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XFontSet set;
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XFontStruct *xfont;
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} font;
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} DC; /* draw context */
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typedef struct {
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uint width;
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KeySym keysym;
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int x, y, w, h;
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Bool sel;
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} Key;
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/* function declarations */
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static void buttonpress(XEvent *e);
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static void cleanup(void);
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static void configurenotify(XEvent *e);
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static void destroynotify(XEvent *e);
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static void die(const char *errstr, ...);
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static void drawkeyboard(void);
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static void drawkey(Key *k, ulong col[ColLast]);
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static void expose(XEvent *e);
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static ulong getcolor(const char *colstr);
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static void initfont(const char *fontstr);
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static void leavenotify(XEvent *e);
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static void motionnotify(XEvent *e);
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static void run(void);
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static void setup(void);
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static int textnw(const char *text, uint len);
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/* variables */
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static int screen;
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static int wx, wy, ww, wh;
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static void (*handler[LASTEvent]) (XEvent *) = {
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[ButtonPress] = buttonpress,
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[ConfigureNotify] = configurenotify,
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[DestroyNotify] = destroynotify,
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[Expose] = expose,
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[LeaveNotify] = leavenotify,
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[MotionNotify] = motionnotify,
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};
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static Display *dpy;
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static DC dc;
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static Window root, win;
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static Bool running = True;
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/* configuration, allows nested code to access above variables */
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#include "config.h"
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void
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buttonpress(XEvent *e) {
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}
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void
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cleanup(void) {
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if(dc.font.set)
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XFreeFontSet(dpy, dc.font.set);
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else
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XFreeFont(dpy, dc.font.xfont);
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XFreePixmap(dpy, dc.drawable);
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XFreeGC(dpy, dc.gc);
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XDestroyWindow(dpy, win);
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XSync(dpy, False);
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XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
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}
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void
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configurenotify(XEvent *e) {
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XConfigureEvent *ev = &e->xconfigure;
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if(ev->window == win && (ev->width != ww || ev->height != wh)) {
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ww = ev->width;
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wh = ev->height;
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XFreePixmap(dpy, dc.drawable);
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dc.drawable = XCreatePixmap(dpy, root, ww, wh, DefaultDepth(dpy, screen));
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drawkeyboard();
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}
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}
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void
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die(const char *errstr, ...) {
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va_list ap;
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va_start(ap, errstr);
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vfprintf(stderr, errstr, ap);
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va_end(ap);
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exit(EXIT_FAILURE);
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}
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void
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drawkeyboard(void) {
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int rows, i, j;
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int x = 0, y = 0, h, base;
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for(i = 0, rows = 1; i < LENGTH(keys); i++)
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if(keys[i].keysym == 0)
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rows++;
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h = wh / rows;
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for(i = 0; i < LENGTH(keys); i++) {
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for(j = i, base = 0; j < LENGTH(keys) && keys[j].keysym != 0; j++)
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base += keys[j].width;
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for(x = 0; i < LENGTH(keys) && keys[i].keysym != 0; i++) {
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keys[i].x = x;
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keys[i].y = y;
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keys[i].w = keys[i].width * ww / base;
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keys[i].h = h;
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x += keys[i].w;
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printf("%i %i %i %i\n", x, y, keys[i].w, h);
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}
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y += h;
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}
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for(i = 0; i < LENGTH(keys); i++) {
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if(keys[i].keysym != 0)
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drawkey(&keys[i], dc.norm);
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}
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XSync(dpy, False);
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XCopyArea(dpy, dc.drawable, win, dc.gc, 0, 0, ww, wh, 0, 0);
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}
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void
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drawkey(Key *k, ulong col[ColLast]) {
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int x, y, h, len;
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XRectangle r = { k->x, k->y, k->w, k->h};
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const char *text;
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XSetForeground(dpy, dc.gc, col[ColBG]);
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XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
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XSetForeground(dpy, dc.gc, col[ColFG]);
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XDrawRectangles(dpy, dc.drawable, dc.gc, &r, 1);
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text = XKeysymToString(k->keysym);
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len = strlen(text);
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h = dc.font.ascent + dc.font.descent;
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y = k->y + (k->h / 2) - (h / 2) + dc.font.ascent;
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x = k->x + (k->w / 2) - (textnw(text, len) / 2);
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if(dc.font.set)
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XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, text, len);
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else
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XDrawString(dpy, dc.drawable, dc.gc, x, y, text, len);
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}
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void
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destroynotify(XEvent *e) {
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}
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void
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expose(XEvent *e) {
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XExposeEvent *ev = &e->xexpose;
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if(ev->count == 0 && (ev->window == win))
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drawkeyboard();
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}
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ulong
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getcolor(const char *colstr) {
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Colormap cmap = DefaultColormap(dpy, screen);
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XColor color;
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if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color))
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die("error, cannot allocate color '%s'\n", colstr);
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return color.pixel;
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}
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void
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initfont(const char *fontstr) {
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char *def, **missing;
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int i, n;
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missing = NULL;
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if(dc.font.set)
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XFreeFontSet(dpy, dc.font.set);
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dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
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if(missing) {
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while(n--)
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fprintf(stderr, "dwm: missing fontset: %s\n", missing[n]);
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XFreeStringList(missing);
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}
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if(dc.font.set) {
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XFontSetExtents *font_extents;
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XFontStruct **xfonts;
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char **font_names;
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dc.font.ascent = dc.font.descent = 0;
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font_extents = XExtentsOfFontSet(dc.font.set);
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n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
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for(i = 0, dc.font.ascent = 0, dc.font.descent = 0; i < n; i++) {
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dc.font.ascent = MAX(dc.font.ascent, (*xfonts)->ascent);
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dc.font.descent = MAX(dc.font.descent,(*xfonts)->descent);
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xfonts++;
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}
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}
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else {
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if(dc.font.xfont)
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XFreeFont(dpy, dc.font.xfont);
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dc.font.xfont = NULL;
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if(!(dc.font.xfont = XLoadQueryFont(dpy, fontstr))
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&& !(dc.font.xfont = XLoadQueryFont(dpy, "fixed")))
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die("error, cannot load font: '%s'\n", fontstr);
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dc.font.ascent = dc.font.xfont->ascent;
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dc.font.descent = dc.font.xfont->descent;
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}
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dc.font.height = dc.font.ascent + dc.font.descent;
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}
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void
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leavenotify(XEvent *e) {
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}
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void
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motionnotify(XEvent *e) {
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}
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void
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run(void) {
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XEvent ev;
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/* main event loop, also reads status text from stdin */
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XSync(dpy, False);
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while(running) {
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XNextEvent(dpy, &ev);
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if(handler[ev.type])
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(handler[ev.type])(&ev); /* call handler */
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}
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}
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void
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setup(void) {
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/* init screen */
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screen = DefaultScreen(dpy);
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root = RootWindow(dpy, screen);
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initfont(font);
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/* init appearance */
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ww = DisplayWidth(dpy, screen);
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wh = 200;
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wx = 0;
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wy = DisplayHeight(dpy, screen) - wh;
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dc.norm[ColBG] = getcolor(normbgcolor);
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dc.norm[ColFG] = getcolor(normfgcolor);
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dc.sel[ColBG] = getcolor(selbgcolor);
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dc.sel[ColFG] = getcolor(selfgcolor);
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dc.hover[ColBG] = getcolor(hovbgcolor);
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dc.hover[ColFG] = getcolor(hovfgcolor);
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dc.drawable = XCreatePixmap(dpy, root, ww, wh, DefaultDepth(dpy, screen));
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dc.gc = XCreateGC(dpy, root, 0, 0);
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if(!dc.font.set)
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XSetFont(dpy, dc.gc, dc.font.xfont->fid);
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win = XCreateSimpleWindow(dpy, root, wx, wy, ww, wh, 0, dc.norm[ColFG], dc.norm[ColBG]);
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XSelectInput(dpy, win, StructureNotifyMask | PointerMotionMask | ExposureMask);
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XMapRaised(dpy, win);
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drawkeyboard();
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}
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int
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|
textnw(const char *text, uint len) {
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|
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XRectangle r;
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if(dc.font.set) {
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XmbTextExtents(dc.font.set, text, len, NULL, &r);
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return r.width;
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|
}
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return XTextWidth(dc.font.xfont, text, len);
|
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|
}
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|
int
|
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|
|
main(int argc, char *argv[]) {
|
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|
|
|
if(argc == 2 && !strcmp("-v", argv[1]))
|
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|
|
die("svkc-"VERSION", © 2006-2008 svkbd engineers, see LICENSE for details\n");
|
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|
|
else if(argc != 1)
|
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|
|
die("usage: svkbd [-v]\n");
|
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|
|
|
|
|
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|
|
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;
|
|
|
|
|
}
|
Enno Boland (Gottox)