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-rw-r--r--dinput.c387
1 files changed, 387 insertions, 0 deletions
diff --git a/dinput.c b/dinput.c
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index 0000000..490380d
--- /dev/null
+++ b/dinput.c
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+/* See LICENSE file for copyright and license details. */
+#include <ctype.h>
+#include <locale.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <strings.h>
+#include <unistd.h>
+#include <X11/keysym.h>
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+#ifdef XINERAMA
+#include <X11/extensions/Xinerama.h>
+#endif
+
+/* macros */
+#define CLEANMASK(mask) (mask & ~(numlockmask | LockMask))
+#define INRECT(X,Y,RX,RY,RW,RH) ((X) >= (RX) && (X) < (RX) + (RW) && (Y) >= (RY) && (Y) < (RY) + (RH))
+#define MIN(a, b) ((a) < (b) ? (a) : (b))
+#define MAX(a, b) ((a) > (b) ? (a) : (b))
+#define IS_UTF8_1ST_CHAR(c) ((((c) & 0xc0) == 0xc0) || !((c) & 0x80))
+
+/* forward declarations */
+static void cleanup(void);
+static void drawcursor(void);
+static void drawinput(void);
+static void eprint(const char *errstr, ...);
+static Bool grabkeyboard(void);
+static void kpress(XKeyEvent * e);
+static void run(void);
+static void setup(Bool topbar);
+
+#include "config.h"
+
+/* variables */
+static char *prompt = NULL;
+static char text[4096];
+static int promptw = 0;
+static int ret = 0;
+static int screen;
+static unsigned int mw, mh;
+static unsigned int cursor = 0;
+static unsigned int numlockmask = 0;
+static Bool running = True;
+static Display *dpy;
+static Window parent, win;
+
+#include "draw.c"
+
+void
+cleanup(void) {
+ dccleanup();
+ XDestroyWindow(dpy, win);
+ XUngrabKeyboard(dpy, CurrentTime);
+}
+
+void
+drawcursor(void) {
+ XRectangle r = { dc.x, dc.y + 2, 1, dc.font.height - 2 };
+
+ r.x += textnw(text, cursor) + dc.font.height / 2;
+
+ XSetForeground(dpy, dc.gc, dc.norm[ColFG]);
+ XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
+}
+
+void
+drawinput(void)
+{
+ dc.x = 0;
+ dc.y = 0;
+ dc.w = mw;
+ dc.h = mh;
+ drawtext(NULL, dc.norm);
+ /* print prompt? */
+ if(prompt) {
+ dc.w = promptw;
+ drawtext(prompt, dc.sel);
+ dc.x += dc.w;
+ }
+ dc.w = mw - dc.x;
+ drawtext(*text ? text : NULL, dc.norm);
+ drawcursor();
+ XCopyArea(dpy, dc.drawable, win, dc.gc, 0, 0, mw, mh, 0, 0);
+ XFlush(dpy);
+}
+
+void
+eprint(const char *errstr, ...) {
+ va_list ap;
+
+ va_start(ap, errstr);
+ vfprintf(stderr, errstr, ap);
+ va_end(ap);
+ exit(EXIT_FAILURE);
+}
+
+Bool
+grabkeyboard(void) {
+ unsigned int len;
+
+ for(len = 1000; len; len--) {
+ if(XGrabKeyboard(dpy, parent, True, GrabModeAsync, GrabModeAsync, CurrentTime)
+ == GrabSuccess)
+ break;
+ usleep(1000);
+ }
+ return len > 0;
+}
+
+void
+kpress(XKeyEvent * e) {
+ char buf[sizeof text];
+ int num;
+ unsigned int i, len;
+ KeySym ksym;
+
+ len = strlen(text);
+ num = XLookupString(e, buf, sizeof buf, &ksym, NULL);
+ if(ksym == XK_KP_Enter)
+ ksym = XK_Return;
+ else if(ksym >= XK_KP_0 && ksym <= XK_KP_9)
+ ksym = (ksym - XK_KP_0) + XK_0;
+ else if(IsFunctionKey(ksym) || IsKeypadKey(ksym)
+ || IsMiscFunctionKey(ksym) || IsPFKey(ksym)
+ || IsPrivateKeypadKey(ksym))
+ return;
+ /* first check if a control mask is omitted */
+ if(e->state & ControlMask) {
+ switch(tolower(ksym)) {
+ default:
+ return;
+ case XK_a:
+ ksym = XK_Home;
+ break;
+ case XK_b:
+ ksym = XK_Left;
+ break;
+ case XK_c:
+ ksym = XK_Escape;
+ break;
+ case XK_e:
+ ksym = XK_End;
+ break;
+ case XK_f:
+ ksym = XK_Right;
+ break;
+ case XK_h:
+ ksym = XK_BackSpace;
+ break;
+ case XK_j:
+ ksym = XK_Return;
+ break;
+ case XK_k:
+ text[cursor] = '\0';
+ break;
+ case XK_u:
+ memmove(text, text + cursor, sizeof text - cursor + 1);
+ cursor = 0;
+ break;
+ case XK_w:
+ if(cursor > 0) {
+ i = cursor;
+ while(i-- > 0 && text[i] == ' ');
+ while(i-- > 0 && text[i] != ' ');
+ memmove(text + i + 1, text + cursor, sizeof text - cursor + 1);
+ cursor = i + 1;
+ }
+ break;
+ case XK_y:
+ {
+ FILE *fp;
+ char *s;
+ if(!(fp = popen("sselp", "r")))
+ eprint("dinput: cannot popen sselp\n");
+ s = fgets(buf, sizeof buf, fp);
+ pclose(fp);
+ if(s == NULL)
+ return;
+ }
+ num = strlen(buf);
+ if(num && buf[num-1] == '\n')
+ buf[--num] = '\0';
+ break;
+ }
+ }
+ switch(ksym) {
+ default:
+ num = MIN(num, sizeof text - cursor);
+ if(num && !iscntrl((int) buf[0])) {
+ memmove(text + cursor + num, text + cursor, sizeof text - cursor - num);
+ memcpy(text + cursor, buf, num);
+ cursor += num;
+ }
+ break;
+ case XK_BackSpace:
+ if(cursor == 0)
+ return;
+ for(i = 1; cursor - i > 0 && !IS_UTF8_1ST_CHAR(text[cursor - i]); i++);
+ memmove(text + cursor - i, text + cursor, sizeof text - cursor + i);
+ cursor -= i;
+ break;
+ case XK_Delete:
+ if(cursor == len)
+ return;
+ for(i = 1; cursor + i < len && !IS_UTF8_1ST_CHAR(text[cursor + i]); i++);
+ memmove(text + cursor, text + cursor + i, sizeof text - cursor);
+ break;
+ case XK_End:
+ cursor = len;
+ break;
+ case XK_Escape:
+ ret = 1;
+ running = False;
+ return;
+ case XK_Home:
+ cursor = 0;
+ break;
+ case XK_Left:
+ if(cursor == 0)
+ return;
+ while(cursor-- > 0 && !IS_UTF8_1ST_CHAR(text[cursor]));
+ break;
+ case XK_Return:
+ fprintf(stdout, "%s", text);
+ fflush(stdout);
+ running = False;
+ return;
+ case XK_Right:
+ if(cursor == len)
+ return;
+ while(cursor++ < len && !IS_UTF8_1ST_CHAR(text[cursor]));
+ break;
+ }
+ drawinput();
+}
+
+void
+run(void) {
+ XEvent ev;
+
+ /* main event loop */
+ while(running && !XNextEvent(dpy, &ev))
+ switch (ev.type) {
+ case KeyPress:
+ kpress(&ev.xkey);
+ break;
+ case Expose:
+ if(ev.xexpose.count == 0)
+ drawinput();
+ break;
+ case VisibilityNotify:
+ if (ev.xvisibility.state != VisibilityUnobscured)
+ XRaiseWindow(dpy, win);
+ break;
+ }
+}
+
+void
+setup(Bool topbar) {
+ int i, j, x, y;
+#if XINERAMA
+ int n;
+ XineramaScreenInfo *info = NULL;
+#endif
+ XModifierKeymap *modmap;
+ XSetWindowAttributes wa;
+ XWindowAttributes pwa;
+
+ /* init modifier map */
+ modmap = XGetModifierMapping(dpy);
+ for(i = 0; i < 8; i++)
+ for(j = 0; j < modmap->max_keypermod; j++) {
+ if(modmap->modifiermap[i * modmap->max_keypermod + j]
+ == XKeysymToKeycode(dpy, XK_Num_Lock))
+ numlockmask = (1 << i);
+ }
+ XFreeModifiermap(modmap);
+
+ /* style */
+ dc.norm[ColBG] = getcolor(normbgcolor);
+ dc.norm[ColFG] = getcolor(normfgcolor);
+ dc.sel[ColBG] = getcolor(selbgcolor);
+ dc.sel[ColFG] = getcolor(selfgcolor);
+ initfont(font);
+
+ /* menu window */
+ wa.override_redirect = True;
+ wa.background_pixmap = ParentRelative;
+ wa.event_mask = ExposureMask | ButtonPressMask | KeyPressMask | VisibilityChangeMask;
+
+ /* menu window geometry */
+ mh = (dc.font.height + 2);
+#if XINERAMA
+ if(parent == RootWindow(dpy, screen) && XineramaIsActive(dpy) && (info = XineramaQueryScreens(dpy, &n))) {
+ i = 0;
+ if(n > 1) {
+ int di;
+ unsigned int dui;
+ Window dummy;
+ if(XQueryPointer(dpy, parent, &dummy, &dummy, &x, &y, &di, &di, &dui))
+ for(i = 0; i < n; i++)
+ if(INRECT(x, y, info[i].x_org, info[i].y_org, info[i].width, info[i].height))
+ break;
+ }
+ x = info[i].x_org;
+ y = topbar ? info[i].y_org : info[i].y_org + info[i].height - mh;
+ mw = info[i].width;
+ XFree(info);
+ }
+ else
+#endif
+ {
+ XGetWindowAttributes(dpy, parent, &pwa);
+ x = 0;
+ y = topbar ? 0 : pwa.height - mh;
+ mw = pwa.width;
+ }
+
+ win = XCreateWindow(dpy, parent, x, y, mw, mh, 0,
+ DefaultDepth(dpy, screen), CopyFromParent,
+ DefaultVisual(dpy, screen),
+ CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
+
+ /* pixmap */
+ dcsetup();
+ if(prompt)
+ promptw = MIN(textw(prompt), mw / 5);
+ cursor = strlen(text);
+ XMapRaised(dpy, win);
+}
+
+int
+main(int argc, char *argv[]) {
+ unsigned int i;
+ Bool topbar = True;
+
+ /* command line args */
+ for(i = 1; i < argc; i++)
+ if(!strcmp(argv[i], "-b"))
+ topbar = False;
+ else if(!strcmp(argv[i], "-e")) {
+ if(++i < argc) parent = atoi(argv[i]);
+ }
+ else if(!strcmp(argv[i], "-fn")) {
+ if(++i < argc) font = argv[i];
+ }
+ else if(!strcmp(argv[i], "-nb")) {
+ if(++i < argc) normbgcolor = argv[i];
+ }
+ else if(!strcmp(argv[i], "-nf")) {
+ if(++i < argc) normfgcolor = argv[i];
+ }
+ else if(!strcmp(argv[i], "-p")) {
+ if(++i < argc) prompt = argv[i];
+ }
+ else if(!strcmp(argv[i], "-sb")) {
+ if(++i < argc) selbgcolor = argv[i];
+ }
+ else if(!strcmp(argv[i], "-sf")) {
+ if(++i < argc) selfgcolor = argv[i];
+ }
+ else if(!strcmp(argv[i], "-v"))
+ eprint("dinput-"VERSION", © 2006-2010 dinput engineers, see LICENSE for details\n");
+ else if(!*text)
+ strncpy(text, argv[i], sizeof text);
+ else
+ eprint("usage: dinput [-b] [-e <xid>] [-fn <font>] [-nb <color>] [-nf <color>]\n"
+ " [-p <prompt>] [-sb <color>] [-sf <color>] [-v] [<text>]\n");
+ if(!setlocale(LC_CTYPE, "") || !XSupportsLocale())
+ fprintf(stderr, "dinput: warning: no locale support\n");
+ if(!(dpy = XOpenDisplay(NULL)))
+ eprint("dinput: cannot open display\n");
+ screen = DefaultScreen(dpy);
+ if(!parent)
+ parent = RootWindow(dpy, screen);
+
+ running = grabkeyboard();
+ setup(topbar);
+ drawinput();
+ XSync(dpy, False);
+ run();
+ cleanup();
+ XCloseDisplay(dpy);
+ return ret;
+}
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