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dwm.c
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dwm.c
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/* See LICENSE file for copyright and license details.
*
* dynamic window manager is designed like any other X client as well. It is
* driven through handling X events. In contrast to other X clients, a window
* manager selects for SubstructureRedirectMask on the root window, to receive
* events about window (dis-)appearance. Only one X connection at a time is
* allowed to select for this event mask.
*
* The event handlers of dwm are organized in an array which is accessed
* whenever a new event has been fetched. This allows event dispatching
* in O(1) time.
*
* Each child of the root window is called a client, except windows which have
* set the override_redirect flag. Clients are organized in a linked client
* list on each monitor, the focus history is remembered through a stack list
* on each monitor. Each client contains a bit array to indicate the tags of a
* client.
*
* Keys and tagging rules are organized as arrays and defined in config.h.
*
* To understand everything else, start reading main().
*/
#include <X11/Xatom.h>
#include <X11/Xlib.h>
#include <X11/Xproto.h>
#include <X11/Xutil.h>
#include <X11/cursorfont.h>
#include <X11/keysym.h>
#include <errno.h>
#include <locale.h>
#include <signal.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
#ifdef XINERAMA
#include <X11/extensions/Xinerama.h>
#endif /* XINERAMA */
#include <X11/Xft/Xft.h>
#include "drw.h"
#include "util.h"
#include <X11/extensions/XInput2.h>
#include <math.h>
#include <signal.h>
/* macros */
#define BUTTONMASK (ButtonPressMask | ButtonReleaseMask)
#define CLEANMASK(mask) \
(mask & ~(numlockmask | LockMask) & \
(ShiftMask | ControlMask | Mod1Mask | Mod2Mask | Mod3Mask | Mod4Mask | \
Mod5Mask))
#define INTERSECT(x, y, w, h, m) \
(MAX(0, MIN((x) + (w), (m)->wx + (m)->ww) - MAX((x), (m)->wx)) * \
MAX(0, MIN((y) + (h), (m)->wy + (m)->wh) - MAX((y), (m)->wy)))
#define ISVISIBLE(C) \
((C->mon->isoverview || C->isglobal || \
C->tags & C->mon->tagset[C->mon->seltags]))
#define HIDDEN(C) ((getstate(C->win) == IconicState))
#define LENGTH(X) (sizeof X / sizeof X[0])
#define MOUSEMASK (BUTTONMASK | PointerMotionMask)
#define WIDTH(X) ((X)->w + 2 * (X)->bw)
#define HEIGHT(X) ((X)->h + 2 * (X)->bw)
#define TAGMASK ((1 << LENGTH(tags)) - 1)
#define TEXTW(X) (drw_fontset_getwidth(drw, (X)) + lrpad)
#define SYSTEM_TRAY_REQUEST_DOCK 0
/* XEMBED messages */
#define XEMBED_EMBEDDED_NOTIFY 0
#define XEMBED_WINDOW_ACTIVATE 1
#define XEMBED_FOCUS_IN 4
#define XEMBED_MODALITY_ON 10
#define XEMBED_MAPPED (1 << 0)
#define XEMBED_WINDOW_ACTIVATE 1
#define XEMBED_WINDOW_DEACTIVATE 2
#define VERSION_MAJOR 0
#define VERSION_MINOR 0
#define XEMBED_EMBEDDED_VERSION (VERSION_MAJOR << 16) | VERSION_MINOR
#define OPAQUE 0xffU
/* enums */
enum { CurNormal, CurResize, CurMove, CurLast }; /* cursor */
enum {
SchemeNorm, // 普通
SchemeSel, // 选中的
SchemeSelGlobal, // 全局并选中的
SchemeSelScratchpad, // 便签窗口
SchemeSelFakeFull, // 伪全屏并选中的
SchemeSelFakeFullGLObal, // 伪全屏并全局并选中
SchemeHid, // 隐藏的
SchemeSystray, // 托盘
SchemeNormTag, // 普通标签
SchemeSelTag, // 选中的标签
SchemeUnderline, // 下划线
SchemeBarEmpty, // 状态栏空白部分
SchemeStatusText, // 状态栏文本
}; /* color schemes */
enum {
NetSupported,
NetWMName,
NetWMState,
NetWMCheck,
NetSystemTray,
NetSystemTrayOP,
NetSystemTrayOrientation,
NetSystemTrayOrientationHorz,
NetWMFullscreen,
NetActiveWindow,
NetWMWindowType,
NetWMWindowTypeDialog,
NetClientList,
NetLast
}; /* EWMH atoms */
enum { Manager, Xembed, XembedInfo, XLast }; /* Xembed atoms */
enum {
WMProtocols,
WMDelete,
WMState,
WMTakeFocus,
WMLast
}; /* default atoms */
enum {
ClkTagBar,
ClkLtSymbol,
ClkStatusText,
ClkWinTitle,
ClkBarEmpty,
ClkClientWin,
ClkRootWin,
ClkLast
}; /* clicks */
enum { UP, DOWN, LEFT, RIGHT }; /* movewin */
enum { V_EXPAND, V_REDUCE, H_EXPAND, H_REDUCE }; /* resizewins */
enum {_NET_WM_STATE_REMOVE,_NET_WM_STATE_ADD,_NET_WM_STATE_TOGGLE}; //区分clientmessage是添加请求还是清除请求,第三个是切换请求
typedef struct {
int i;
unsigned int ui;
float f;
const void *v;
} Arg;
typedef struct {
unsigned int click;
unsigned int mask;
unsigned int button;
void (*func)(const Arg *arg);
const Arg arg;
} Button;
typedef struct Monitor Monitor;
typedef struct Client Client;
struct Client {
char name[256];
char icon[10];
float mina, maxa;
int x, y, w, h;
int oldx, oldy, oldw, oldh;
int bw, oldbw;
int overview_backup_x, overview_backup_y, overview_backup_w,
overview_backup_h, overview_backup_bw;
int fullscreen_backup_x, fullscreen_backup_y, fullscreen_backup_w,
fullscreen_backup_h;
int isactive;
int basew, baseh, incw, inch, maxw, maxh, minw, minh;
int taskw, no_limit_taskw;
unsigned int tags;
int isfixed, isfloating, isurgent, neverfocus, oldstate, isfullscreen,
isglobal, isnoborder, overview_isfullscreenbak,
overview_isfloatingbak;
Client *next;
Client *snext;
Monitor *mon;
Window win;
int is_in_scratchpad;
int is_scratchpad_show;
};
typedef struct {
unsigned int mod;
KeySym keysym;
void (*func)(const Arg *);
const Arg arg;
} Key;
typedef struct {
const char *symbol;
void (*arrange)(Monitor *);
} Layout;
typedef struct Pertag Pertag;
struct Monitor {
char ltsymbol[16];
float mfact;
int nmaster;
int num;
int by; /* bar geometry */
int bt; /* number of tasks */
int mx, my, mw, mh; /* screen size */
int wx, wy, ww, wh; /* window area */
unsigned int seltags;
unsigned int sellt;
unsigned int tagset[2];
int showbar;
int topbar;
Client *clients;
Client *sel;
Client *stack;
Monitor *next;
Window barwin;
const Layout *lt[2];
Pertag *pertag;
uint isoverview;
uint is_in_hotarea;
int status_w;
};
typedef struct {
const char *class;
const char *instance;
const char *title;
unsigned int tags;
int isfloating;
int isglobal;
int isnoborder;
int monitor;
uint floatposition;
uint width;
uint high;
} Rule;
typedef struct {
const char *class;
const char *style;
} Icon;
typedef struct Systray Systray;
struct Systray {
Window win;
Client *icons;
};
/* function declarations */
static void logtofile(const char *fmt, ...);
static void lognumtofile(unsigned int num);
static void tile(Monitor *m);
static void rtile(Monitor *m);
static void magicgrid(Monitor *m);
static void overview(Monitor *m);
static void grid(Monitor *m, uint gappo, uint uappi);
static void applyrules(Client *c);
static int applysizehints(Client *c, int *x, int *y, int *w, int *h,
int interact);
static void arrange(Monitor *m);
static void arrangemon(Monitor *m);
static void attach(Client *c, int inserhead);
static void attachstack(Client *c);
static void buttonpress(XEvent *e);
static void checkotherwm(void);
static unsigned int judge_win_contain_state(Window w, Atom prop);
static void cleanup(void);
static void cleanupmon(Monitor *mon);
static void clientmessage(XEvent *e);
static void configure(Client *c);
static void configurenotify(XEvent *e);
static unsigned long get_win_pid(Window win);
static Atom getatompropfromwin(Window w, Atom prop);
static void configurerequest(XEvent *e);
static void clickstatusbar(const Arg *arg);
static Monitor *createmon(void);
static void destroynotify(XEvent *e);
static void detach(Client *c);
static void detachstack(Client *c);
static Monitor *dirtomon(int dir);
static void drawbar(Monitor *m);
static void drawbars(void);
static int drawstatusbar(Monitor *m, int bh, char *text);
static void enternotify(XEvent *e);
static void expose(XEvent *e);
static void focusin(XEvent *e);
static void focus(Client *c);
static void focusmon(const Arg *arg);
static void focusstack(const Arg *arg);
static void pointerfocuswin(Client *c);
static Atom getatomprop(Client *c, Atom prop);
static int getrootptr(int *x, int *y);
static long getstate(Window w);
static unsigned int getsystraywidth();
static int gettextprop(Window w, Atom atom, char *text, unsigned int size);
static void grabbuttons(Client *c, int focused);
static void grabkeys(void);
static void hide(Client *c);
static void show(Client *c);
static void showtag(Client *c);
static void hidewin(const Arg *arg);
static void hideotherwins(const Arg *arg);
static void showonlyorall(const Arg *arg);
static int issinglewin(const Arg *arg);
static void restorewin(const Arg *arg);
static void toggle_scratchpad(const Arg *arg);
static void show_scratchpad(Client *c);
static void incnmaster(const Arg *arg);
static void keypress(XEvent *e);
static void killclient(const Arg *arg);
static void forcekillclient(const Arg *arg);
static void manage(Window w, XWindowAttributes *wa);
static void mappingnotify(XEvent *e);
static void maprequest(XEvent *e);
static void motionnotify(XEvent *e);
static void movemouse(const Arg *arg);
static void movewin(const Arg *arg);
static void resizewin(const Arg *arg);
static Client *nexttiled(Client *c);
static void pop(Client *);
static void propertynotify(XEvent *e);
static void quit(const Arg *arg);
static void setup(void);
static void seturgent(Client *c, int urg);
static void sigchld(int unused);
static void spawn(const Arg *arg);
static Monitor *systraytomon(Monitor *m);
static Monitor *recttomon(int x, int y, int w, int h);
static void removesystrayicon(Client *i);
static void resize(Client *c, int x, int y, int w, int h, int interact);
static void resizebarwin(Monitor *m);
static void resizeclient(Client *c, int x, int y, int w, int h);
static void resizemouse(const Arg *arg);
static void resizerequest(XEvent *e);
static void restack(Monitor *m);
static void clear_client(Client *fc);
static void run(void);
static void runAutostart(void);
static void scan(void);
static int sendevent(Window w, Atom proto, int m, long d0, long d1, long d2,
long d3, long d4);
static void sendmon(Client *c, Monitor *m);
static void setclientstate(Client *c, long state);
static void setfocus(Client *c);
static void selectlayout(const Arg *arg);
static void setlayout(const Arg *arg);
// static void client_flag_filter(Client *c);
static void fullscreen(const Arg *arg);
static void setfullscreen(Client *c);
static void fake_fullscreen(const Arg *arg);
static void set_fake_fullscreen(Client *c);
static void setmfact(const Arg *arg);
static void tag_client(const Arg *arg,Client *target_client);
static void tag(const Arg *arg);
static void tagmon(const Arg *arg);
static void tagtoleft(const Arg *arg);
static void tagtoright(const Arg *arg);
static void togglebar(const Arg *arg);
static void togglesystray();
static void togglefloating(const Arg *arg);
static void toggleallfloating(const Arg *arg);
static void toggleview(const Arg *arg);
static void toggleoverview(const Arg *arg);
static void togglewin(const Arg *arg);
static void toggleglobal(const Arg *arg);
static void toggleborder(const Arg *arg);
static void unfocus(Client *c, int setfocus);
static void unmanage(Client *c, int destroyed);
static void unmapnotify(XEvent *e);
static void updatebarpos(Monitor *m);
static void updatebars(void);
static void updateclientlist(void);
static int updategeom(void);
static void updatenumlockmask(void);
static void updatesizehints(Client *c);
static void updatestatus(void);
static void updatesystray(void);
static void updatesystrayicongeom(Client *i, int w, int h);
static void updatesystrayiconstate(Client *i, XPropertyEvent *ev);
static void updatetitle(Client *c);
static void updateicon(Client *c);
static void updatewindowtype(Client *c);
static void updatewmhints(Client *c);
static void setgap(const Arg *arg);
static void view(const Arg *arg);
static void viewtoleft(const Arg *arg);
static void viewtoright(const Arg *arg);
static void addtoleft(const Arg *arg);
static void addtoright(const Arg *arg);
static void exchange_client(const Arg *arg);
static void focusdir(const Arg *arg);
static unsigned int get_tags_first_tag(unsigned int tags);
static Client *wintoclient(Window w);
static Monitor *wintomon(Window w);
static Client *wintosystrayicon(Window w);
static int xerror(Display *dpy, XErrorEvent *ee);
static int xerrordummy(Display *dpy, XErrorEvent *ee);
static int xerrorstart(Display *dpy, XErrorEvent *ee);
static void xinitvisual();
static void zoom(const Arg *arg);
static void inner_overvew_toggleoverview(const Arg *arg);
static void inner_overvew_killclient(const Arg *arg);
static void clear_fullscreen_flag(Client *c);
static uint get_border_type(Client *c);
static void toggle_hotarea(int x_root, int y_root);
static void xi_handler(XEvent xevent);
static void overview_restore(Client *c, const Arg *arg);
static void overview_backup(Client *c);
static void fullname_taskbar_activeitem(const Arg *arg);
static unsigned int want_restore_fullscreen(Client *target_client);
static unsigned int want_auto_fullscren(Client *c);
/* variables */
static Systray *systray = NULL;
static const char broken[] = "broken";
static char stext[1024];
static int screen;
static int sw, sh; /* X display screen geometry width, height */
static int bh, blw = 0; /* bar geometry */
static int lrpad; /* sum of left and right padding for text */
static int vp; /* vertical padding for bar */
static int sp; /* side padding for bar */
static int (*xerrorxlib)(Display *, XErrorEvent *);
static unsigned int numlockmask = 0;
static void (*handler[LASTEvent])(
XEvent *) = { // 给捕获的事件定义处理函数,左边是类型,右边是自定义函数
[ButtonPress] = buttonpress, // 按键事件
[ClientMessage] = clientmessage, //窗口给x11服务发送的请求比如全屏请求等
[ConfigureRequest] = configurerequest, //客户端窗口请求大小和位置变化和边框改变,窗口请求不是用户触发
[ConfigureNotify] = configurenotify, //窗口大小和位置变化和边框改变的时候触发
[DestroyNotify] = destroynotify, //销毁事件
[EnterNotify] = enternotify, // 鼠标移动进入窗口事件,比如聚焦的处理
[Expose] = expose, // 窗口暴露事件,由不可见变成可见的时候触发
[FocusIn] = focusin, //聚焦事件
[KeyPress] = keypress, //键盘事件
[MappingNotify] = mappingnotify, //键盘映射发生变化时触发
[MapRequest] = maprequest, //窗口映射触发,只有设置了映射窗口才能被看到
[MotionNotify] = motionnotify, // 监视器事件,比如鼠标移动到某个位置的处理
[PropertyNotify] = propertynotify, //窗口属性改变的时候触发
[ResizeRequest] = resizerequest, //客户端请求重置大小,不是用户触发的
[UnmapNotify] = unmapnotify}; //窗口取消映射的时候触发,比如隐藏和杀死都会触发
static Atom wmatom[WMLast], netatom[NetLast], xatom[XLast];
static int running = 1;
static Cur *cursor[CurLast];
static Clr **scheme;
static Display *dpy;
static int xi_opcode;
static Drw *drw;
static int useargb = 0;
static Visual *visual;
static int depth;
static Colormap cmap;
static Monitor *mons, *selmon;
static Window root, wmcheckwin;
static int hiddenWinStackTop = -1;
static Client *hiddenWinStack[100];
/* configuration, allows nested code to access above variables */
#include "config.h"
#include "icons.h"
struct Pertag {
unsigned int curtag, prevtag; /* current and previous tag */
int nmasters[LENGTH(tags) + 1]; /* number of windows in master area */
float mfacts[LENGTH(tags) + 1]; /* mfacts per tag */
unsigned int sellts[LENGTH(tags) + 1]; /* selected layouts */
const Layout
*ltidxs[LENGTH(tags) + 1][2]; /* matrix of tags and layouts indexes */
int showbars[LENGTH(tags) + 1]; /* display bar for the current tag */
};
/* function implementations */
void logtofile(const char *fmt, ...) {
char buf[256];
char cmd[256];
va_list ap;
va_start(ap, fmt);
vsprintf((char *)buf, fmt, ap);
va_end(ap);
uint i = strlen((const char *)buf);
sprintf(cmd, "echo '%.*s' >> ~/log", i, buf);
system(cmd);
}
/* function implementations */
void lognumtofile(unsigned int num) {
char cmd[256];
sprintf(cmd, "echo '%x' >> ~/log", num);
system(cmd);
}
//获取tags中最坐标的tag的tagmask
unsigned int get_tags_first_tag(unsigned int tags){
unsigned int i,target,tag;
tag = 0;
for(i=0;!(tag & 1);i++){
tag = tags >> i;
}
target = 1 << (i-1);
return target;
}
//获取窗口的进程pid
unsigned long get_win_pid(Window win) {
Atom prop_name = XInternAtom(dpy, "_NET_WM_PID", False);
Atom type;
int format;
unsigned long nitems;
unsigned long bytes_after;
unsigned char *prop = NULL;
unsigned long pid = 0;
if (XGetWindowProperty(dpy, win, prop_name, 0, 1, False, XA_CARDINAL,
&type, &format, &nitems, &bytes_after, &prop) == Success) {
if (prop) {
pid = *((unsigned long *) prop);
XFree(prop);
}
}
return pid;
}
// 扩展输入事件处理函数
static void xi_handler(XEvent xevent) {
Client *pointer_in_client; // 鼠标所在的窗口
XGetEventData(dpy, &xevent.xcookie); // 获取扩展事件cookie对应的事件数据
if (xevent.xcookie.evtype == XI_RawMotion) { // 鼠标移动事件
Window root_return, child_return;
int root_x_return, root_y_return;
int win_x_return, win_y_return;
unsigned int mask_return;
XQueryPointer(dpy, root, &root_return,
&child_return, // 获取鼠标位置和鼠标所在的窗口
&root_x_return, &root_y_return, &win_x_return, &win_y_return,
&mask_return);
toggle_hotarea(root_x_return,
root_y_return); // 判断窗口真全屏状态左下角触发热区
if (child_return != None && mouse_move_toggle_focus == 1) {
pointer_in_client =
wintoclient(child_return); // window对象转换为client对象
focus(pointer_in_client); // 聚焦到鼠标所在的窗口
}
} else if (xevent.xcookie.evtype == XI_RawButtonPress){ //鼠标按键事件
Window root_return, child_return;
int root_x_return, root_y_return;
int win_x_return, win_y_return;
unsigned int mask_return;
XQueryPointer(dpy, root, &root_return,
&child_return, // 获取鼠标位置和鼠标所在的窗口
&root_x_return, &root_y_return, &win_x_return, &win_y_return,
&mask_return);
Atom net_wm_state_skip_pager = //_NET_WM_STATE_SKIP_PAGER一些窗口小部件有这个属性比如eww面板
XInternAtom(dpy, "_NET_WM_STATE_SKIP_PAGER", False); //最后一个参数表示是否系统本来就存在该原子的时候才返回,这里表示可以自定义不管系统有没有
Atom normal_win = //_NET_WM_STATE_SKIP_PAGER一些窗口小部件有这个属性比如eww面板
XInternAtom(dpy, "_NET_WM_WINDOW_TYPE_NORMAL", False); //最后一个参数表示是否系统本来就存在该原子的时候才返回,这里表示可以自定义不管系统有没有
unsigned int isinbacklist = judge_win_contain_state(child_return, net_wm_state_skip_pager);
Atom wtype = getatompropfromwin(child_return, netatom[NetWMWindowType]);
if(!child_return || child_return == selmon->barwin || child_return == systray->win || isinbacklist == 1 || wtype != normal_win){
goto FreeEventData;
}
pointer_in_client =
wintoclient(child_return); // window对象转换为client对象
focus(pointer_in_client); // 聚焦到鼠标所在的窗口
if(pointer_in_client && pointer_in_client->isfloating){
XRaiseWindow(dpy,pointer_in_client->win); //提升浮动窗口到顶层
}
}
FreeEventData:
XFreeEventData(dpy,
&xevent.xcookie); // 释放函数开头get到内存的数据防止内存泄露
}
void applyrules(Client *c) { // 读取config.h的窗口配置规则处理
const char *class, *instance;
unsigned int i;
const Rule *r;
Monitor *m;
XClassHint ch = {NULL, NULL};
/* rule matching */
c->isfloating = 0;
c->overview_isfloatingbak = 0;
c->isglobal = 0;
c->isfullscreen = 0;
c->overview_isfullscreenbak = 0;
c->isnoborder = 0;
c->tags = 0;
XGetClassHint(dpy, c->win, &ch);
class = ch.res_class ? ch.res_class : broken;
instance = ch.res_name ? ch.res_name : broken;
for (i = 0; i < LENGTH(rules); i++) {
r = &rules[i];
// 当rule中定义了一个或多个属性时，只要有一个属性匹配，就认为匹配成功
if ((r->title && !strcmp(c->name, r->title)) ||
(r->class && !strcmp(class, r->class)) ||
(r->instance && !strcmp(instance, r->instance))) {
c->isfloating = r->isfloating;
c->isglobal = r->isglobal;
c->isnoborder = r->isnoborder;
c->tags |= r->tags;
c->bw = c->isnoborder ? 0 : borderpx;
for (m = mons; m && m->num != r->monitor; m = m->next)
;
if (m)
c->mon = m;
// 如果设定了isfloating 且设置窗口的长和宽
if (r->isfloating && r->width != 0 && r->high != 0) {
c->w = r->width;
c->h = r->high;
}
// 如果设定了floatposition 设定窗口位置
if (r->isfloating && r->floatposition != 0) {
switch (r->floatposition) {
case 1:
c->x = selmon->wx + gappo;
c->y = selmon->wy + gappo;
break; // 左上
case 2:
c->x = selmon->wx + (selmon->ww - WIDTH(c)) / 2 - gappo;
c->y = selmon->wy + gappo;
break; // 中上
case 3:
c->x = selmon->wx + selmon->ww - WIDTH(c) - gappo;
c->y = selmon->wy + gappo;
break; // 右上
case 4:
c->x = selmon->wx + gappo;
c->y = selmon->wy + (selmon->wh - HEIGHT(c)) / 2;
break; // 左中
case 0: // 默认0，居中
case 5:
c->x = selmon->wx + (selmon->ww - WIDTH(c)) / 2;
c->y = selmon->wy + (selmon->wh - HEIGHT(c)) / 2;
break; // 中中
case 6:
c->x = selmon->wx + selmon->ww - WIDTH(c) - gappo;
c->y = selmon->wy + (selmon->wh - HEIGHT(c)) / 2;
break; // 右中
case 7:
c->x = selmon->wx + gappo;
c->y = selmon->wy + selmon->wh - HEIGHT(c) - gappo;
break; // 左下
case 8:
c->x = selmon->wx + (selmon->ww - WIDTH(c)) / 2;
c->y = selmon->wy + selmon->wh - HEIGHT(c) - gappo;
break; // 中下
case 9:
c->x = selmon->wx + selmon->ww - WIDTH(c) - gappo;
c->y = selmon->wy + selmon->wh - HEIGHT(c) - gappo;
break; // 右下
}
}
break; // 有且只会匹配一个第一个符合的rule
}
}
if (ch.res_class)
XFree(ch.res_class);
if (ch.res_name)
XFree(ch.res_name);
c->tags =
c->tags & TAGMASK ? c->tags & TAGMASK : c->mon->tagset[c->mon->seltags];
}
int applysizehints(Client *c, int *x, int *y, int *w, int *h, int interact) {
int baseismin;
Monitor *m = c->mon;
/* set minimum possible */
*w = MAX(1, *w);
*h = MAX(1, *h);
if (interact) {
if (*x > sw)
*x = sw - WIDTH(c);
if (*y > sh)
*y = sh - HEIGHT(c);
if (*x + *w + 2 * c->bw < 0)
*x = 0;
if (*y + *h + 2 * c->bw < 0)
*y = 0;
} else {
if (*x >= m->wx + m->ww)
*x = m->wx + m->ww - WIDTH(c);
if (*y >= m->wy + m->wh)
*y = m->wy + m->wh - HEIGHT(c);
if (*x + *w + 2 * c->bw <= m->wx)
*x = m->wx;
if (*y + *h + 2 * c->bw <= m->wy)
*y = m->wy;
}
if (*h < bh)
*h = bh;
if (*w < bh)
*w = bh;
if (c->isfloating) {
/* see last two sentences in ICCCM 4.1.2.3 */
baseismin = c->basew == c->minw && c->baseh == c->minh;
if (!baseismin) { /* temporarily remove base dimensions */
*w -= c->basew;
*h -= c->baseh;
}
/* adjust for aspect limits */
if (c->mina > 0 && c->maxa > 0) {
if (c->maxa < (float)*w / *h)
*w = *h * c->maxa + 0.5;
else if (c->mina < (float)*h / *w)
*h = *w * c->mina + 0.5;
}
if (baseismin) { /* increment calculation requires this */
*w -= c->basew;
*h -= c->baseh;
}
/* adjust for increment value */
if (c->incw)
*w -= *w % c->incw;
if (c->inch)
*h -= *h % c->inch;
/* restore base dimensions */
*w = MAX(*w + c->basew, c->minw);
*h = MAX(*h + c->baseh, c->minh);
if (c->maxw)
*w = MIN(*w, c->maxw);
if (c->maxh)
*h = MIN(*h, c->maxh);
}
return *x != c->x || *y != c->y || *w != c->w || *h != c->h;
}
void arrange(Monitor *m) { // 布局管理
if (m)
showtag(m->stack);
else
for (m = mons; m; m = m->next)
showtag(m->stack);
if (m) {
arrangemon(m);
restack(m);
} else
for (m = mons; m; m = m->next)
arrangemon(m);
}
void arrangemon(Monitor *m) { // 确认选用的布局
if (m->isoverview) {
strncpy(m->ltsymbol, overviewlayout.symbol, sizeof overviewlayout.symbol);
overviewlayout.arrange(m);
} else {
strncpy(m->ltsymbol, m->lt[m->sellt]->symbol,
sizeof m->lt[m->sellt]->symbol);
m->lt[m->sellt]->arrange(m);
}
}
void attach(Client *c,int inserthead) { // 新打开的窗口放入窗口链表中
Client **tc;
for (tc = &c->mon->clients; *tc; tc = &(*tc)->next){
// 如果当前的tag中有新创建的窗口,就让当前tag中的全屏窗口退出全屏参与平铺
if((*tc) && !c->isfloating && (*tc)->tags & c->tags){
clear_fullscreen_flag(*tc);
}
}
if (!inserthead) {
*tc = c;
c->next = NULL;
} else {
c->next = c->mon->clients;
c->mon->clients = c;
}
}
void attachstack(Client *c) { // 放入栈中
c->snext = c->mon->stack;
c->mon->stack = c;
}
void buttonpress(XEvent *e) { // 鼠标按键事件处理函数
unsigned int i, x, click, occ = 0;
Arg arg = {0};
Monitor *m;
XButtonPressedEvent *ev = &e->xbutton;
Client *c = wintoclient(ev->window);
// 滚轮加按键事件直接操作,不进行下面鼠标位置判断
for (i = 0; i < LENGTH(buttons); i++) {
if (buttons[i].func && buttons[i].button == ev->button &&
(ev->button == Button4 || ev->button == Button5) &&
CLEANMASK(buttons[i].mask) == CLEANMASK(ev->state) &&
CLEANMASK(buttons[i].mask) != 0) {
buttons[i].func(&buttons[i].arg);
return;
}
}
// 判断鼠标点击的位置
click = ClkRootWin;
/* focus monitor if necessary */
if ((m = wintomon(ev->window)) && m != selmon) {
unfocus(selmon->sel, 1);
selmon = m;
focus(NULL);
}
int status_w = selmon->status_w;
int system_w = getsystraywidth();
if (ev->window == selmon->barwin ||
(!c && selmon->showbar &&
(topbar ? ev->y <= selmon->wy
: ev->y >= selmon->wy + selmon->wh))) { // 点击在bar上
i = x = 0;
blw = TEXTW(selmon->ltsymbol);
if (selmon->isoverview) {
x += TEXTW(overviewtag);
i = ~0;
if (ev->x > x)
i = LENGTH(tags);
} else {
for (c = m->clients; c; c = c->next)
occ |= c->tags == TAGMASK ? 0 : c->tags;
do {
/* do not reserve space for vacant tags */
if (!(occ & 1 << i || m->tagset[m->seltags] & 1 << i))
continue;
x += TEXTW(tags[i]);
} while (ev->x >= x && ++i < LENGTH(tags));
}
if (i < LENGTH(tags)) {
click = ClkTagBar;
arg.ui = 1 << i;
} else if (ev->x < x + blw)
click = ClkLtSymbol;
else if (ev->x > selmon->ww - status_w - 2 * sp -
(selmon == systraytomon(selmon)
? (system_w ? system_w + systraypinning + 2 : 0)
: 0)) {
click = ClkStatusText;
arg.i = ev->x - (selmon->ww - status_w - 2 * sp -
(selmon == systraytomon(selmon)
? (system_w ? system_w + systraypinning + 2 : 0)
: 0));
arg.ui = ev->button; // 1 => L，2 => M，3 => R, 5 => U, 6 => D
} else {
click = ClkBarEmpty;
x += blw;
c = m->clients;
if (m->bt != 0)
do {
if (!ISVISIBLE(c))
continue;
else
x += c->taskw;
} while (ev->x > x && (c = c->next));
if (c) {
click = ClkWinTitle;
arg.v = c;
}
}
} else if ((c = wintoclient(ev->window))) {
focus(c);
restack(selmon);
// 这句代码好像是多余的,因为不停止捕获,重新发送的事件还是会被再次拦截捕获,不会传到原本的客户端
XAllowEvents(dpy, ReplayPointer, CurrentTime);
click = ClkClientWin;
}
// 增加ClkRootWin也可以触发鼠标按键事件,这样tab无窗口才能使用鼠标中键加滚轮切换tab
for (i = 0; i < LENGTH(buttons); i++)
if (click == buttons[i].click && buttons[i].func &&
buttons[i].button == ev->button &&
CLEANMASK(buttons[i].mask) == CLEANMASK(ev->state)) {
buttons[i].func((click == ClkTagBar || click == ClkRootWin ||
click == ClkWinTitle || click == ClkStatusText) &&
buttons[i].arg.i == 0
? &arg
: &buttons[i].arg);
}
}
void checkotherwm(void) {
xerrorxlib = XSetErrorHandler(xerrorstart);
/* this causes an error if some other window manager is running */
XSelectInput(dpy, DefaultRootWindow(dpy), SubstructureRedirectMask);
XSync(dpy, False);
XSetErrorHandler(xerror);
XSync(dpy, False);
}
void cleanup(void) {
Arg a = {.ui = ~0};
Layout foo = {"", NULL};
Monitor *m;
size_t i;
view(&a);
selmon->lt[selmon->sellt] = &foo;
for (m = mons; m; m = m->next){
while (m->stack){
unmanage(m->stack, 0);
}
}
XUngrabKey(dpy, AnyKey, AnyModifier, root);
while (mons)
cleanupmon(mons);
if (showsystray) {
XUnmapWindow(dpy, systray->win);
XDestroyWindow(dpy, systray->win);
free(systray);
}
for (i = 0; i < CurLast; i++)
drw_cur_free(drw, cursor[i]);
for (i = 0; i < LENGTH(colors) + 1; i++)
free(scheme[i]);
XDestroyWindow(dpy, wmcheckwin);
drw_free(drw);
XSync(dpy, False);
XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
XDeleteProperty(dpy, root, netatom[NetActiveWindow]);
}
void cleanupmon(Monitor *mon) {
Monitor *m;
if (mon == mons)
mons = mons->next;
else {
for (m = mons; m && m->next != mon; m = m->next)
;
m->next = mon->next;
}
XUnmapWindow(dpy, mon->barwin);
XDestroyWindow(dpy, mon->barwin);
free(mon);
}
void clientmessage(XEvent *e) {
XWindowAttributes wa;
XSetWindowAttributes swa;
XClientMessageEvent *cme = &e->xclient;
Client *c = wintoclient(cme->window);
Atom atom_max_horz = XInternAtom(dpy, "_NET_WM_STATE_MAXIMIZED_HORZ", False);
Atom atom_max_vert = XInternAtom(dpy, "_NET_WM_STATE_MAXIMIZED_VERT", False);