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/*
 * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
 * See LICENSE file for license details.
 */

#include "config.h"
#include <X11/Xlib.h>

/* mask shorthands, used in event.c and client.c */
#define BUTTONMASK		(ButtonPressMask | ButtonReleaseMask)
#define MOUSEMASK		(BUTTONMASK | PointerMotionMask)
#define PROTODELWIN		1

typedef union Arg Arg;
typedef struct Client Client;
typedef struct DC DC;
typedef struct Fnt Fnt;

union Arg {
	const char **argv;
	int i;
};

/* atoms */
enum { NetSupported, NetWMName, NetLast };
enum { WMProtocols, WMDelete, WMLast };

/* cursor */
enum { CurNormal, CurResize, CurMove, CurLast };

/* windowcorners */
typedef enum { TopLeft, TopRight, BotLeft, BotRight } Corner;

struct Fnt {
	int ascent;
	int descent;
	int height;
	XFontSet set;
	XFontStruct *xfont;
};

struct DC { /* draw context */
	int x, y, w, h;
	unsigned long bg;
	unsigned long fg;
	unsigned long border;
	Drawable drawable;
	Fnt font;
	GC gc;
};

struct Client {
	char name[256];
	char *tags[TLast];
	int proto;
	int x, y, w, h;
	int tx, ty, tw, th; /* title */
	int basew, baseh, incw, inch, maxw, maxh, minw, minh;
	int grav;
	long flags; 
	unsigned int border;
	Bool isfloat;
	Bool ismax;
	Client *next;
	Client *prev;
	Window win;
	Window title;
};

extern char *tags[TLast], stext[1024];
extern int tsel, screen, sx, sy, sw, sh, bx, by, bw, bh, mw;
extern void (*handler[LASTEvent])(XEvent *);
extern void (*arrange)(Arg *);
extern Atom wmatom[WMLast], netatom[NetLast];
extern Bool running, issel;
extern Client *clients, *sel;
extern Cursor cursor[CurLast];
extern DC dc;
extern Display *dpy;
extern Window root, barwin;

/* client.c */
extern void ban(Client *c);
extern void focus(Client *c);
extern void focusnext(Arg *arg);
extern void focusprev(Arg *arg);
extern Client *getclient(Window w);
extern Client *getctitle(Window w);
extern void gravitate(Client *c, Bool invert);
extern void higher(Client *c);
extern void killclient(Arg *arg);
extern void lower(Client *c);
extern void manage(Window w, XWindowAttributes *wa);
extern void resize(Client *c, Bool sizehints, Corner sticky);
extern void setsize(Client *c);
extern void settitle(Client *c);
extern void togglemax(Arg *arg);
extern void unmanage(Client *c);
extern void zoom(Arg *arg);

/* draw.c */
extern void drawall();
extern void drawstatus();
extern void drawtitle(Client *c);
extern unsigned long getcolor(const char *colstr);
extern void setfont(const char *fontstr);
extern unsigned int textw(char *text);

/* event.c */
extern void grabkeys();

/* main.c */
extern int getproto(Window w);
extern void quit(Arg *arg);
extern void sendevent(Window w, Atom a, long value);
extern int xerror(Display *dsply, XErrorEvent *ee);

/* tag.c */
extern void appendtag(Arg *arg);
extern void dofloat(Arg *arg);
extern void dotile(Arg *arg);
extern Client *getnext(Client *c);
extern Client *getprev(Client *c);
extern void replacetag(Arg *arg);
extern void settags(Client *c);
extern void togglemode(Arg *arg);
extern void view(Arg *arg);
extern void viewnext(Arg *arg);
extern void viewprev(Arg *arg);

/* util.c */
extern void *emallocz(unsigned int size);
extern void eprint(const char *errstr, ...);
extern void spawn(Arg *arg);
n>, { 0 } }, /*{ MODKEY|ShiftMask, XK_w, spawn, { .argv = browse } },*/ { MODKEY|ShiftMask, XK_Return, spawn, { .argv = term } }, }; /* static */ static void movemouse(Client *c) { XEvent ev; int x1, y1, ocx, ocy, di; unsigned int dui; Window dummy; ocx = c->x; ocy = c->y; if(XGrabPointer(dpy, root, False, MouseMask, GrabModeAsync, GrabModeAsync, None, cursor[CurMove], CurrentTime) != GrabSuccess) return; XQueryPointer(dpy, root, &dummy, &dummy, &x1, &y1, &di, &di, &dui); for(;;) { XMaskEvent(dpy, MouseMask | ExposureMask, &ev); switch (ev.type) { default: break; case Expose: handler[Expose](&ev); break; case MotionNotify: XSync(dpy, False); c->x = ocx + (ev.xmotion.x - x1); c->y = ocy + (ev.xmotion.y - y1); resize(c, False, TopLeft); break; case ButtonRelease: XUngrabPointer(dpy, CurrentTime); return; } } } static void resizemouse(Client *c) { XEvent ev; int ocx, ocy; Corner sticky; ocx = c->x; ocy = c->y; if(XGrabPointer(dpy, root, False, MouseMask, GrabModeAsync, GrabModeAsync, None, cursor[CurResize], CurrentTime) != GrabSuccess) return; XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w, c->h); for(;;) { XMaskEvent(dpy, MouseMask | ExposureMask, &ev); switch(ev.type) { default: break; case Expose: handler[Expose](&ev); break; case MotionNotify: XSync(dpy, False); c->w = abs(ocx - ev.xmotion.x); c->h = abs(ocy - ev.xmotion.y); c->x = (ocx <= ev.xmotion.x) ? ocx : ocx - c->w; c->y = (ocy <= ev.xmotion.y) ? ocy : ocy - c->h; if(ocx <= ev.xmotion.x) sticky = (ocy <= ev.xmotion.y) ? TopLeft : BotLeft; else sticky = (ocy <= ev.xmotion.y) ? TopRight : BotRight; resize(c, True, sticky); break; case ButtonRelease: XUngrabPointer(dpy, CurrentTime); return; } } } static void buttonpress(XEvent *e) { int x; Arg a; XButtonPressedEvent *ev = &e->xbutton; Client *c; if(barwin == ev->window) { switch(ev->button) { default: x = 0; for(a.i = 0; a.i < TLast; a.i++) { x += textw(tags[a.i]); if(ev->x < x) { view(&a); break; } } break; case Button4: a.i = (tsel + 1 < TLast) ? tsel + 1 : 0; view(&a); break; case Button5: a.i = (tsel - 1 >= 0) ? tsel - 1 : TLast - 1; view(&a); break; } } else if((c = getclient(ev->window))) { switch(ev->button) { default: break; case Button1: if(arrange == dotile && !c->isfloat) { if((ev->state & ControlMask) && (ev->button == Button1)) zoom(NULL); } else { higher(c); movemouse(c); } break; case Button2: lower(c); break; case Button3: if(arrange == dofloat || c->isfloat) { higher(c); resizemouse(c); } break; } } } static void configurerequest(XEvent *e) { XConfigureRequestEvent *ev = &e->xconfigurerequest; XWindowChanges wc; Client *c; ev->value_mask &= ~CWSibling; if((c = getclient(ev->window))) { gravitate(c, True); if(ev->value_mask & CWX) c->x = ev->x; if(ev->value_mask & CWY) c->y = ev->y; if(ev->value_mask & CWWidth) c->w = ev->width; if(ev->value_mask & CWHeight) c->h = ev->height; if(ev->value_mask & CWBorderWidth) c->border = 1; gravitate(c, False); resize(c, True, TopLeft); } wc.x = ev->x; wc.y = ev->y; wc.width = ev->width; wc.height = ev->height; wc.border_width = 1; wc.sibling = None; wc.stack_mode = Above; ev->value_mask &= ~CWStackMode; ev->value_mask |= CWBorderWidth; XConfigureWindow(dpy, ev->window, ev->value_mask, &wc); XSync(dpy, False); } static void destroynotify(XEvent *e) { Client *c; XDestroyWindowEvent *ev = &e->xdestroywindow; if((c = getclient(ev->window))) unmanage(c); } static void enternotify(XEvent *e) { XCrossingEvent *ev = &e->xcrossing; Client *c; if(ev->mode != NotifyNormal || ev->detail == NotifyInferior) return; if((c = getclient(ev->window))) focus(c); else if(ev->window == root) issel = True; } static void expose(XEvent *e) { XExposeEvent *ev = &e->xexpose; Client *c; if(ev->count == 0) { if(barwin == ev->window) drawstatus(); else if((c = getctitle(ev->window))) drawtitle(c); } } static void keypress(XEvent *e) { XKeyEvent *ev = &e->xkey; static unsigned int len = key ? sizeof(key) / sizeof(key[0]) : 0; unsigned int i; KeySym keysym; keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0); for(i = 0; i < len; i++) if((keysym == key[i].keysym) && (key[i].mod == ev->state)) { if(key[i].func) key[i].func(&key[i].arg); return; } } static void leavenotify(XEvent *e) { XCrossingEvent *ev = &e->xcrossing; if((ev->window == root) && !ev->same_screen) issel = True; } static void maprequest(XEvent *e) { XMapRequestEvent *ev = &e->xmaprequest; static XWindowAttributes wa; if(!XGetWindowAttributes(dpy, ev->window, &wa)) return; if(wa.override_redirect) { XSelectInput(dpy, ev->window, (StructureNotifyMask | PropertyChangeMask)); return; } if(!getclient(ev->window)) manage(ev->window, &wa); } static void propertynotify(XEvent *e) { XPropertyEvent *ev = &e->xproperty; Window trans; Client *c; if(ev->state == PropertyDelete) return; /* ignore */ if((c = getclient(ev->window))) { if(ev->atom == wmatom[WMProtocols]) { c->proto = getproto(c->win); return; } switch (ev->atom) { default: break; case XA_WM_TRANSIENT_FOR: XGetTransientForHint(dpy, c->win, &trans); if(!c->isfloat && (c->isfloat = (trans != 0))) arrange(NULL); break; case XA_WM_NORMAL_HINTS: setsize(c); break; } if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) { settitle(c); drawtitle(c); } } } static void unmapnotify(XEvent *e) { Client *c; XUnmapEvent *ev = &e->xunmap; if((c = getclient(ev->window))) unmanage(c); } /* extern */ void (*handler[LASTEvent]) (XEvent *) = { [ButtonPress] = buttonpress, [ConfigureRequest] = configurerequest, [DestroyNotify] = destroynotify, [EnterNotify] = enternotify, [LeaveNotify] = leavenotify, [Expose] = expose, [KeyPress] = keypress, [MapRequest] = maprequest, [PropertyNotify] = propertynotify, [UnmapNotify] = unmapnotify }; void grabkeys() { static unsigned int len = key ? sizeof(key) / sizeof(key[0]) : 0; unsigned int i; KeyCode code; for(i = 0; i < len; i++) { code = XKeysymToKeycode(dpy, key[i].keysym); XUngrabKey(dpy, code, key[i].mod, root); XGrabKey(dpy, code, key[i].mod, root, True, GrabModeAsync, GrabModeAsync); } }