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jbwm.c
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jbwm.c
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// jbwm - Minimalist Window Manager for X
// Copyright 2008-2019, Alisa Bedard <alisabedard@gmail.com>
// Copyright 1999-2015, Ciaran Anscomb <evilwm@6809.org.uk>
// See README for license and other details.
//#undef DEBUG
#include "jbwm.h"
#include "config.h"
#include "ewmh.h"
#include "font.h"
#include "atom.h"
#include "JBWMScreen.h"
#include "keys.h"
#include "log.h"
#include "new.h"
#include <stdbool.h>
#include "util.h"
#include "vdesk.h"
#ifdef JBWM_USE_XFT
static void allocate_xft_color(Display * d, struct JBWMScreen * s)
{
XftColorAllocName(d, DefaultVisualOfScreen(s->xlib),
DefaultColormapOfScreen(s->xlib), JBWM_FG,
&s->font_color);
}
#endif//JBWM_USE_XFT
static void allocate_colors(struct JBWMScreen * s)
{
Display * d=s->xlib->display;
const uint8_t n = s->id;
#define PIX(field, color) s->pixels.field = jbwm_get_pixel(d, n, color);
PIX(bg, JBWM_BG);
PIX(fc, JBWM_FC);
PIX(fg, JBWM_FG);
PIX(close, JBWM_CLOSE);
PIX(resize, JBWM_RESIZE);
PIX(shade, JBWM_SHADE);
PIX(stick, JBWM_STICK);
#undef PIX
#ifdef JBWM_USE_XFT
allocate_xft_color(d, s);
#endif//JBWM_USE_XFT
}
static bool check_redirect(Display * d, const Window w)
{
XWindowAttributes a;
XGetWindowAttributes(d, w, &a);
JBWM_LOG("check_redirect(0x%x): override_redirect: %s, "
"map_state: %s", (int)w,
a.override_redirect ? "true" : "false",
a.map_state == IsViewable ? "IsViewable"
: "not IsViewable");
return (!a.override_redirect && (a.map_state == IsViewable));
}
// Free returned data with XFree()
static Window * get_windows(Display * dpy, const Window root,
uint16_t * win_count)
{
Window * w, d;
unsigned int n;
XQueryTree(dpy, root, &d, &d, &w, &n);
*win_count = n;
return w;
}
static void setup_clients(Display * d, struct JBWMScreen * s,
struct JBWMClient ** head_client, struct JBWMClient ** current_client)
{
uint16_t n;
Window * w = get_windows(d, RootWindow(d, s->id), &n);
JBWM_LOG("Started with %d clients", n);
if (w) { // Avoid segmentation fault on empty list.
while(n--)
if(check_redirect(d,w[n]))
jbwm_new_client(s, head_client, current_client, w[n]);
XFree(w);
}
}
static inline void setup_gc(Display * d, struct JBWMScreen * s)
{
XGCValues v={
.foreground = s->pixels.fg,
.background = s->pixels.bg,
.subwindow_mode = IncludeInferiors,
.line_width = 1
};
unsigned long mask = GCSubwindowMode | GCLineWidth
| GCForeground | GCBackground;
#ifndef JBWM_USE_XFT
v.font=s->font->fid;
mask|=GCFont;
#endif//JBWM_USE_XFT
s->gc=DefaultGC(d,s->id);
XChangeGC(d,s->gc,mask,&v);
s->border_gc=XCreateGC(d,s->xlib->root,GCFunction,
&(XGCValues){.function=GXxor});
XCopyGC(d,s->gc,mask,s->border_gc);
}
static inline void setup_event_listeners(Display * d, const Window root)
{
enum {
EMASK = SubstructureRedirectMask | SubstructureNotifyMask |
EnterWindowMask | PropertyChangeMask
| ColormapChangeMask
};
XChangeWindowAttributes(d, root, CWEventMask,
&(XSetWindowAttributes){.event_mask = EMASK });
}
#ifdef JBWM_USE_XFT
/* Create a unique XftDraw for each screen to properly handle colormaps and
* screen limitations. */
static XftDraw * new_xft_draw(Screen * s)
{
return XftDrawCreate(DisplayOfScreen(s), RootWindowOfScreen(s),
DefaultVisualOfScreen(s), DefaultColormapOfScreen(s));
}
#endif//JBWM_USE_XFT
// Initialize SCREENS amount of screens.
void jbwm_init_screens(Display *d, struct JBWMScreen *s,
struct JBWMClient ** head_client, struct JBWMClient ** current_client,
const short screens)
{
if(screens>=0){
unsigned long *lprop;
uint16_t n;
uint8_t vdesk;
JBWM_LOG("jbwm_init_screen(d, screens), screens is %d", screens);
s->id = screens;
s->xlib = ScreenOfDisplay(d, screens);
lprop=jbwm_get_property(d,s->xlib->root,
jbwm_atoms[JBWM_NET_CURRENT_DESKTOP],&n);
if(n){
vdesk=lprop[0];
XFree(lprop);
}else
vdesk=0;
#ifdef JBWM_USE_XFT
s->xft = new_xft_draw(s->xlib);
#else//!JBWM_USE_XFT
s->font = jbwm_get_font();
#endif//JBWM_USE_XFT
s->font_height=jbwm_get_font_height();
allocate_colors(s);
setup_gc(d, s);
{ // r scope
const Window r = RootWindow(d, screens);
setup_event_listeners(d, r);
jbwm_grab_root_keys(d, r);
}
/* scan all the windows on this screen */
setup_clients(d, s, head_client, current_client);
jbwm_ewmh_init_screen(d, s);
jbwm_init_screens(d, s, head_client, current_client, screens - 1);
jbwm_set_vdesk(s, *head_client, vdesk);
}
}