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775ba78311
cwm/menu.c
Christian Neukirchen 775ba78311 cvsimport 
* refs/heads/master:
  stray newlines
  Add search_print_text(), a default callback for mi->print in menu_filter(). While here, normalize the remaining search_print_* argument paramters.
  Consistent use of menuq_add for ssh menu.
  Now that dim.{x,y} are available early, use them before requiring a MotionNotify event.
  Set dim.{x,y} during client_init and update on resize, instead of (re)calculating only when applying hints.
  'window-search' is spelled 'menu-window'; the former snuck in during the conversion('menu-window' already existed and was properlly documented); found the hard way by sthen@ while trying to convert.
  Fold unbinding functions into one for each, key and mouse; plugs a leak when unbinding a mouse button bound to a command.
  use the correct type
  Tame the number of 'exec' and 'path' search_match wrappers. No functional change now, though more can likely go later, losing the (paritally complete or incomplete/broken) argument completion bits.
  Switch ssh menu to search_match_text; like group/window/cmd menus, use only a substring match. The previous matching is only intended for the exec menus.
  Change 'menu-window' to display all windows; then add 'menu-window-hidden' for the previous behaviour of 'menu-window'.  'menu-window' becomes the default binding; use 'bind-mouse "1" menu-window-hidden' to restore old behaviour for those who prefer.
  Normalize bind function names, based on a few categories: window, group, menu and pointer.
  Use an additional check with lstat(2) when d_type is unknown.
  revert previous; upcoming changes will hopefully deal with these more naturally.
  Add a wrapper based upon xevent handlers around client move/resize for key and mouse bindings.
  Define callbacks, then default bindings.
  Reorganize for upcoming changes.
  Remove the (8) default bindings for pointer move since they conflict with default bindings for emacs, which wins; the feature remains and can be bound to whatever users wish with cwmrc(5).
2016-12-16 13:48:38 +01:00

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/*
* calmwm - the calm window manager
*
* Copyright (c) 2008 Owain G. Ainsworth <oga@openbsd.org>
* Copyright (c) 2004 Marius Aamodt Eriksen <marius@monkey.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* $OpenBSD$
*/
#include <sys/types.h>
#include "queue.h"
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <limits.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "calmwm.h"
#define PROMPT_SCHAR "\xc2\xbb"
#define PROMPT_ECHAR "\xc2\xab"
enum ctltype {
CTL_NONE = -1,
CTL_ERASEONE = 0, CTL_WIPE, CTL_UP, CTL_DOWN, CTL_RETURN,
CTL_TAB, CTL_ABORT, CTL_ALL
};
struct menu_ctx {
struct screen_ctx *sc;
char searchstr[MENU_MAXENTRY + 1];
char dispstr[MENU_MAXENTRY*2 + 1];
char promptstr[MENU_MAXENTRY + 1];
int hasprompt;
int list;
int listing;
int changed;
int noresult;
int prev;
int entry;
int num;
int flags;
struct geom geom;
void (*match)(struct menu_q *, struct menu_q *, char *);
void (*print)(struct menu *, int);
};
static struct menu *menu_handle_key(XEvent *, struct menu_ctx *,
struct menu_q *, struct menu_q *);
static void menu_handle_move(struct menu_ctx *,
struct menu_q *, int, int);
static struct menu *menu_handle_release(struct menu_ctx *,
struct menu_q *, int, int);
static void menu_draw(struct menu_ctx *, struct menu_q *,
struct menu_q *);
static void menu_draw_entry(struct menu_ctx *, struct menu_q *,
int, int);
static int menu_calc_entry(struct menu_ctx *, int, int);
static struct menu *menu_complete_path(struct menu_ctx *);
static int menu_keycode(XKeyEvent *, enum ctltype *, char *);
struct menu *
menu_filter(struct screen_ctx *sc, struct menu_q *menuq, const char *prompt,
const char *initial, int flags,
void (*match)(struct menu_q *, struct menu_q *, char *),
void (*print)(struct menu *, int))
{
struct menu_ctx mc;
struct menu_q resultq;
struct menu *mi = NULL;
XEvent e;
Window focuswin;
int evmask, focusrevert;
int xsave, ysave, xcur, ycur;
TAILQ_INIT(&resultq);
(void)memset(&mc, 0, sizeof(mc));
xu_ptr_getpos(sc->rootwin, &xsave, &ysave);
mc.sc = sc;
mc.flags = flags;
mc.match = match;
mc.print = print;
mc.entry = mc.prev = -1;
mc.geom.x = xsave;
mc.geom.y = ysave;
if (mc.flags & CWM_MENU_LIST)
mc.list = 1;
if (initial != NULL)
(void)strlcpy(mc.searchstr, initial, sizeof(mc.searchstr));
else
mc.searchstr[0] = '\0';
evmask = MENUMASK;
if (prompt != NULL) {
evmask |= KEYMASK; /* accept keys as well */
(void)strlcpy(mc.promptstr, prompt, sizeof(mc.promptstr));
mc.hasprompt = 1;
}
XSelectInput(X_Dpy, sc->menu.win, evmask);
XMapRaised(X_Dpy, sc->menu.win);
if (XGrabPointer(X_Dpy, sc->menu.win, False, MENUGRABMASK,
GrabModeAsync, GrabModeAsync, None, Conf.cursor[CF_QUESTION],
CurrentTime) != GrabSuccess) {
XUnmapWindow(X_Dpy, sc->menu.win);
return(NULL);
}
XGetInputFocus(X_Dpy, &focuswin, &focusrevert);
XSetInputFocus(X_Dpy, sc->menu.win, RevertToPointerRoot, CurrentTime);
/* make sure keybindings don't remove keys from the menu stream */
XGrabKeyboard(X_Dpy, sc->menu.win, True,
GrabModeAsync, GrabModeAsync, CurrentTime);
for (;;) {
mc.changed = 0;
XWindowEvent(X_Dpy, sc->menu.win, evmask, &e);
switch (e.type) {
case KeyPress:
if ((mi = menu_handle_key(&e, &mc, menuq, &resultq))
!= NULL)
goto out;
/* FALLTHROUGH */
case Expose:
menu_draw(&mc, menuq, &resultq);
break;
case MotionNotify:
menu_handle_move(&mc, &resultq,
e.xbutton.x, e.xbutton.y);
break;
case ButtonRelease:
if ((mi = menu_handle_release(&mc, &resultq,
e.xbutton.x, e.xbutton.y)) != NULL)
goto out;
break;
default:
break;
}
}
out:
if ((mc.flags & CWM_MENU_DUMMY) == 0 && mi->dummy) {
/* no mouse based match */
free(mi);
mi = NULL;
}
XSetInputFocus(X_Dpy, focuswin, focusrevert, CurrentTime);
/* restore if user didn't move */
xu_ptr_getpos(sc->rootwin, &xcur, &ycur);
if (xcur == mc.geom.x && ycur == mc.geom.y)
xu_ptr_setpos(sc->rootwin, xsave, ysave);
XUngrabPointer(X_Dpy, CurrentTime);
XMoveResizeWindow(X_Dpy, sc->menu.win, 0, 0, 1, 1);
XUnmapWindow(X_Dpy, sc->menu.win);
XUngrabKeyboard(X_Dpy, CurrentTime);
return(mi);
}
static struct menu *
menu_complete_path(struct menu_ctx *mc)
{
struct screen_ctx *sc = mc->sc;
struct menu *mi, *mr;
struct menu_q menuq;
mr = xcalloc(1, sizeof(*mr));
TAILQ_INIT(&menuq);
if ((mi = menu_filter(sc, &menuq, mc->searchstr, NULL,
(CWM_MENU_DUMMY), search_match_path, search_print_text)) != NULL) {
mr->abort = mi->abort;
mr->dummy = mi->dummy;
if (mi->text[0] != '\0')
snprintf(mr->text, sizeof(mr->text), "%s \"%s\"",
mc->searchstr, mi->text);
else if (!mr->abort)
strlcpy(mr->text, mc->searchstr, sizeof(mr->text));
}
menuq_clear(&menuq);
return(mr);
}
static struct menu *
menu_handle_key(XEvent *e, struct menu_ctx *mc, struct menu_q *menuq,
struct menu_q *resultq)
{
struct menu *mi;
enum ctltype ctl;
char chr[32];
size_t len;
int clen, i;
wchar_t wc;
if (menu_keycode(&e->xkey, &ctl, chr) < 0)
return(NULL);
switch (ctl) {
case CTL_ERASEONE:
if ((len = strlen(mc->searchstr)) > 0) {
clen = 1;
while (mbtowc(&wc, &mc->searchstr[len-clen], MB_CUR_MAX) == -1)
clen++;
for (i = 1; i <= clen; i++)
mc->searchstr[len - i] = '\0';
mc->changed = 1;
}
break;
case CTL_UP:
mi = TAILQ_LAST(resultq, menu_q);
if (mi == NULL)
break;
TAILQ_REMOVE(resultq, mi, resultentry);
TAILQ_INSERT_HEAD(resultq, mi, resultentry);
break;
case CTL_DOWN:
mi = TAILQ_FIRST(resultq);
if (mi == NULL)
break;
TAILQ_REMOVE(resultq, mi, resultentry);
TAILQ_INSERT_TAIL(resultq, mi, resultentry);
break;
case CTL_RETURN:
/*
* Return whatever the cursor is currently on. Else
* even if dummy is zero, we need to return something.
*/
if ((mi = TAILQ_FIRST(resultq)) == NULL) {
mi = xmalloc(sizeof(*mi));
(void)strlcpy(mi->text,
mc->searchstr, sizeof(mi->text));
mi->dummy = 1;
}
mi->abort = 0;
return(mi);
case CTL_WIPE:
mc->searchstr[0] = '\0';
mc->changed = 1;
break;
case CTL_TAB:
if ((mi = TAILQ_FIRST(resultq)) != NULL) {
/*
* - We are in exec_path menu mode
* - It is equal to the input
* We got a command, launch the file menu
*/
if ((mc->flags & CWM_MENU_FILE) &&
(strncmp(mc->searchstr, mi->text,
strlen(mi->text))) == 0)
return(menu_complete_path(mc));
/*
* Put common prefix of the results into searchstr
*/
(void)strlcpy(mc->searchstr,
mi->text, sizeof(mc->searchstr));
while ((mi = TAILQ_NEXT(mi, resultentry)) != NULL) {
i = 0;
while (tolower(mc->searchstr[i]) ==
tolower(mi->text[i]))
i++;
mc->searchstr[i] = '\0';
}
mc->changed = 1;
}
break;
case CTL_ALL:
mc->list = !mc->list;
break;
case CTL_ABORT:
mi = xmalloc(sizeof(*mi));
mi->text[0] = '\0';
mi->dummy = 1;
mi->abort = 1;
return(mi);
default:
break;
}
if (chr[0] != '\0') {
mc->changed = 1;
(void)strlcat(mc->searchstr, chr, sizeof(mc->searchstr));
}
mc->noresult = 0;
if (mc->changed && mc->searchstr[0] != '\0') {
(*mc->match)(menuq, resultq, mc->searchstr);
/* If menuq is empty, never show we've failed */
mc->noresult = TAILQ_EMPTY(resultq) && !TAILQ_EMPTY(menuq);
} else if (mc->changed)
TAILQ_INIT(resultq);
if (!mc->list && mc->listing && !mc->changed) {
TAILQ_INIT(resultq);
mc->listing = 0;
}
return(NULL);
}
static void
menu_draw(struct menu_ctx *mc, struct menu_q *menuq, struct menu_q *resultq)
{
struct screen_ctx *sc = mc->sc;
struct menu *mi;
struct geom area;
int n, xsave, ysave;
XGlyphInfo extents;
if (mc->list) {
if (TAILQ_EMPTY(resultq)) {
/* Copy them all over. */
TAILQ_FOREACH(mi, menuq, entry)
TAILQ_INSERT_TAIL(resultq, mi, resultentry);
mc->listing = 1;
} else if (mc->changed)
mc->listing = 0;
}
mc->num = 0;
mc->geom.w = 0;
mc->geom.h = 0;
if (mc->hasprompt) {
(void)snprintf(mc->dispstr, sizeof(mc->dispstr), "%s%s%s%s",
mc->promptstr, PROMPT_SCHAR, mc->searchstr, PROMPT_ECHAR);
XftTextExtentsUtf8(X_Dpy, sc->xftfont,
(const FcChar8*)mc->dispstr, strlen(mc->dispstr), &extents);
mc->geom.w = extents.xOff;
mc->geom.h = sc->xftfont->height + 1;
mc->num = 1;
}
TAILQ_FOREACH(mi, resultq, resultentry) {
(*mc->print)(mi, mc->listing);
XftTextExtentsUtf8(X_Dpy, sc->xftfont,
(const FcChar8*)mi->print,
MIN(strlen(mi->print), MENU_MAXENTRY), &extents);
mc->geom.w = MAX(mc->geom.w, extents.xOff);
mc->geom.h += sc->xftfont->height + 1;
mc->num++;
}
area = screen_area(sc, mc->geom.x, mc->geom.y, CWM_GAP);
area.w += area.x - Conf.bwidth * 2;
area.h += area.y - Conf.bwidth * 2;
xsave = mc->geom.x;
ysave = mc->geom.y;
/* Never hide the top, or left side, of the menu. */
if (mc->geom.x + mc->geom.w >= area.w)
mc->geom.x = area.w - mc->geom.w;
if (mc->geom.x < area.x) {
mc->geom.x = area.x;
mc->geom.w = MIN(mc->geom.w, (area.w - area.x));
}
if (mc->geom.y + mc->geom.h >= area.h)
mc->geom.y = area.h - mc->geom.h;
if (mc->geom.y < area.y) {
mc->geom.y = area.y;
mc->geom.h = MIN(mc->geom.h, (area.h - area.y));
}
if (mc->geom.x != xsave || mc->geom.y != ysave)
xu_ptr_setpos(sc->rootwin, mc->geom.x, mc->geom.y);
XClearWindow(X_Dpy, sc->menu.win);
XMoveResizeWindow(X_Dpy, sc->menu.win, mc->geom.x, mc->geom.y,
mc->geom.w, mc->geom.h);
n = 0;
if (mc->hasprompt) {
XftDrawStringUtf8(sc->menu.xftdraw,
&sc->xftcolor[CWM_COLOR_MENU_FONT], sc->xftfont,
0, sc->xftfont->ascent,
(const FcChar8*)mc->dispstr, strlen(mc->dispstr));
n++;
}
TAILQ_FOREACH(mi, resultq, resultentry) {
int y = n * (sc->xftfont->height + 1) + sc->xftfont->ascent + 1;
/* Stop drawing when menu doesn't fit inside the screen. */
if (mc->geom.y + y > area.h)
break;
XftDrawStringUtf8(sc->menu.xftdraw,
&sc->xftcolor[CWM_COLOR_MENU_FONT], sc->xftfont,
0, y,
(const FcChar8*)mi->print, strlen(mi->print));
n++;
}
if (mc->hasprompt && n > 1)
menu_draw_entry(mc, resultq, 1, 1);
}
static void
menu_draw_entry(struct menu_ctx *mc, struct menu_q *resultq,
int entry, int active)
{
struct screen_ctx *sc = mc->sc;
struct menu *mi;
int color, i = 0;
if (mc->hasprompt)
i = 1;
TAILQ_FOREACH(mi, resultq, resultentry)
if (entry == i++)
break;
if (mi == NULL)
return;
color = (active) ? CWM_COLOR_MENU_FG : CWM_COLOR_MENU_BG;
XftDrawRect(sc->menu.xftdraw, &sc->xftcolor[color], 0,
(sc->xftfont->height + 1) * entry, mc->geom.w,
(sc->xftfont->height + 1) + sc->xftfont->descent);
color = (active) ? CWM_COLOR_MENU_FONT_SEL : CWM_COLOR_MENU_FONT;
XftDrawStringUtf8(sc->menu.xftdraw,
&sc->xftcolor[color], sc->xftfont,
0, (sc->xftfont->height + 1) * entry + sc->xftfont->ascent + 1,
(const FcChar8*)mi->print, strlen(mi->print));
}
static void
menu_handle_move(struct menu_ctx *mc, struct menu_q *resultq, int x, int y)
{
mc->prev = mc->entry;
mc->entry = menu_calc_entry(mc, x, y);
if (mc->prev == mc->entry)
return;
if (mc->prev != -1)
menu_draw_entry(mc, resultq, mc->prev, 0);
if (mc->entry != -1) {
XChangeActivePointerGrab(X_Dpy, MENUGRABMASK,
Conf.cursor[CF_NORMAL], CurrentTime);
menu_draw_entry(mc, resultq, mc->entry, 1);
}
}
static struct menu *
menu_handle_release(struct menu_ctx *mc, struct menu_q *resultq, int x, int y)
{
struct menu *mi;
int entry, i = 0;
entry = menu_calc_entry(mc, x, y);
if (mc->hasprompt)
i = 1;
TAILQ_FOREACH(mi, resultq, resultentry)
if (entry == i++)
break;
if (mi == NULL) {
mi = xmalloc(sizeof(*mi));
mi->text[0] = '\0';
mi->dummy = 1;
}
return(mi);
}
static int
menu_calc_entry(struct menu_ctx *mc, int x, int y)
{
struct screen_ctx *sc = mc->sc;
int entry;
entry = y / (sc->xftfont->height + 1);
/* in bounds? */
if (x < 0 || x > mc->geom.w || y < 0 ||
y > (sc->xftfont->height + 1) * mc->num ||
entry < 0 || entry >= mc->num)
entry = -1;
if (mc->hasprompt && entry == 0)
entry = -1;
return(entry);
}
static int
menu_keycode(XKeyEvent *ev, enum ctltype *ctl, char *chr)
{
KeySym ks;
*ctl = CTL_NONE;
chr[0] = '\0';
ks = XkbKeycodeToKeysym(X_Dpy, ev->keycode, 0,
(ev->state & ShiftMask) ? 1 : 0);
/* Look for control characters. */
switch (ks) {
case XK_BackSpace:
*ctl = CTL_ERASEONE;
break;
case XK_KP_Enter:
case XK_Return:
*ctl = CTL_RETURN;
break;
case XK_Tab:
*ctl = CTL_TAB;
break;
case XK_Up:
*ctl = CTL_UP;
break;
case XK_Down:
*ctl = CTL_DOWN;
break;
case XK_Escape:
*ctl = CTL_ABORT;
break;
}
if (*ctl == CTL_NONE && (ev->state & ControlMask)) {
switch (ks) {
case XK_s:
case XK_S:
/* Emacs "next" */
*ctl = CTL_DOWN;
break;
case XK_r:
case XK_R:
/* Emacs "previous" */
*ctl = CTL_UP;
break;
case XK_u:
case XK_U:
*ctl = CTL_WIPE;
break;
case XK_h:
case XK_H:
*ctl = CTL_ERASEONE;
break;
case XK_a:
case XK_A:
*ctl = CTL_ALL;
break;
case XK_bracketleft:
*ctl = CTL_ABORT;
break;
}
}
if (*ctl == CTL_NONE && (ev->state & Mod1Mask)) {
switch (ks) {
case XK_j:
case XK_J:
/* Vi "down" */
*ctl = CTL_DOWN;
break;
case XK_k:
case XK_K:
/* Vi "up" */
*ctl = CTL_UP;
break;
}
}
if (*ctl != CTL_NONE)
return(0);
if (XLookupString(ev, chr, 32, &ks, NULL) < 0)
return(-1);
return(0);
}
void
menuq_add(struct menu_q *mq, void *ctx, const char *fmt, ...)
{
va_list ap;
struct menu *mi;
mi = xcalloc(1, sizeof(*mi));
mi->ctx = ctx;
va_start(ap, fmt);
if (fmt != NULL)
(void)vsnprintf(mi->text, sizeof(mi->text), fmt, ap);
else
mi->text[0] = '\0';
va_end(ap);
TAILQ_INSERT_TAIL(mq, mi, entry);
}
void
menuq_clear(struct menu_q *mq)
{
struct menu *mi;
while ((mi = TAILQ_FIRST(mq)) != NULL) {
TAILQ_REMOVE(mq, mi, entry);
free(mi);
}
}
void
menu_windraw(struct screen_ctx *sc, Window win, const char *fmt, ...)
{
va_list ap;
int i;
char *text;
XGlyphInfo extents;
va_start(ap, fmt);
i = vasprintf(&text, fmt, ap);
va_end(ap);
if (i < 0 || text == NULL)
err(1, "vasprintf");
XftTextExtentsUtf8(X_Dpy, sc->xftfont, (const FcChar8*)text,
strlen(text), &extents);
XReparentWindow(X_Dpy, sc->menu.win, win, 0, 0);
XMoveResizeWindow(X_Dpy, sc->menu.win, 0, 0,
extents.xOff, sc->xftfont->height);
XMapWindow(X_Dpy, sc->menu.win);
XClearWindow(X_Dpy, sc->menu.win);
XftDrawStringUtf8(sc->menu.xftdraw, &sc->xftcolor[CWM_COLOR_MENU_FONT],
sc->xftfont, 0, sc->xftfont->ascent + 1,
(const FcChar8*)text, strlen(text));
free(text);
}
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