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dcb741d2b1378432e226bbeea274c2e5e2508c2d
cwm/menu.c
okan dcb741d2b1 cvsimport 
* refs/heads/master: (34 commits)
  Make it clear these are flags.
  Remove duplicate check that strsubmatch() already does; while here, fix a comment.
  Sprinkle __func__ in appropriate error messages.
  Get rid of 'matchname'; it's too surprising to have the menu change during client search as different potential str matches are cycled through. If there's interest, the only string that doesn't exist in the listing is the window's class - that can be added of course, but it makes the line too long imho.
  clean up search_match_client(); no behaviour change
  Refactor callbacks to take a void * so as to not try and generalize into client_ctx in keypress and buttonpress event handlers; pass appropriate *ctx's based on context.
  remove another unused proto
  Rename 2 kbfunc to match closer to what they do
  Add an argument to the callbacks to pass the xevent context, button or key press. This allows to remove a few hacks to duplicate functions only for behaviour changes; now differing behaviours are pushed down to the callback. Also will allow for previously unavailable actions to be bind-able down the road.
  Check the ptr bounds in the new client during cycling, since not all actions do ptrsave, such as restoring client geometry; adapted from a diff by Vadim Vygonets.
  More accurate to say 'toggle', rather than 'select', for group[n]/nogroup.
  Add CM-a for 'nogroup' (CM-0 stays for now); update manpage to reflect.
  Stash wmname into conf.
  When removing xrandr regions, ensure clients are within the bounds of the screen; adapted from an ancient diff from Sviatoslav Chagaev. Things in this area will likely change, but put this in so it works now and serves as a reminder.
  Calculate client nameqlen in client_setname(), the only place it's needed/used.
  Turn CALMWM_NGROUPS define into variable, ngroups.
  Start simplifying menu code; and in turn, remove a cursor no longer needed.
  Defaults are split between defines and conf_init(); normalize these, as well as give 'sticky' groups its own variable.
  For both kb and mouse move, it is possible to grab a client and move it completely off the screen/region; instead, if the pointer is outside of the client bounds, warp the pointer to the closest edge before moving.
  client_ptrwarp should not deal with unhiding or raising clients (non ptr requests); most callers do this already - deal with the few that do not. client_ptrwarp becomes a simple wrapper (setpos) but it will be expanded.
  ...
2016-10-24 20:44:08 +00:00

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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_any, NULL)) != 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) {
if (mc->print != NULL)
(*mc->print)(mi, mc->listing);
else
(void)snprintf(mi->print, sizeof(mi->print),
"%s", mi->text);
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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