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conky/src/x11.cc

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/*
*
* Conky, a system monitor, based on torsmo
*
* Any original torsmo code is licensed under the BSD license
*
* All code written since the fork of torsmo is licensed under the GPL
*
* Please see COPYING for details
*
* Copyright (c) 2004, Hannu Saransaari and Lauri Hakkarainen
* Copyright (c) 2005-2021 Brenden Matthews, Philip Kovacs, et. al.
* (see AUTHORS)
* All rights reserved.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include "x11.h"
#include <X11/X.h>
#include <sys/types.h>
#include "common.h"
#include "config.h"
#include "conky.h"
#include "gui.h"
#include "logging.h"
#include <array>
#include <cstddef>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <string>
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wvariadic-macros"
#pragma GCC diagnostic ignored "-Wregister"
#include <X11/XKBlib.h>
#pragma GCC diagnostic pop
#include <X11/Xatom.h>
#include <X11/Xlib.h>
#include <X11/Xmd.h>
#include <X11/Xutil.h>
#ifdef BUILD_IMLIB2
#include "imlib2.h"
#endif /* BUILD_IMLIB2 */
#ifndef OWN_WINDOW
#include <iostream>
#endif
#ifdef BUILD_XFT
#include <X11/Xft/Xft.h>
#endif
#ifdef BUILD_XINERAMA
#include <X11/extensions/Xinerama.h>
#endif
#ifdef BUILD_XSHAPE
#include <X11/extensions/shape.h>
#endif /* BUILD_XSHAPE */
#ifdef BUILD_XFIXES
#include <X11/extensions/Xfixes.h>
#endif /* BUILD_XFIXES */
#ifdef BUILD_XINPUT
#include <X11/extensions/XInput2.h>
#include <vector>
#endif /* BUILD_XINPUT */
#ifdef HAVE_XCB_ERRORS
#include <xcb/xcb.h>
#include <xcb/xcb_errors.h>
#endif
/* some basic X11 stuff */
Display *display = nullptr;
#ifdef HAVE_XCB_ERRORS
xcb_connection_t *xcb_connection;
xcb_errors_context_t *xcb_errors_ctx;
#endif
/* Window stuff */
struct conky_x11_window window;
#ifdef BUILD_ARGB
bool have_argb_visual;
#endif /* BUILD_ARGB */
conky::simple_config_setting<std::string> display_name("display", std::string(),
false);
/* local prototypes */
static void update_workarea();
static Window find_desktop_window(Window *p_root, Window *p_desktop);
static Window find_subwindow(Window win, int w, int h);
static void init_x11();
/********************* <SETTINGS> ************************/
namespace priv {
void out_to_x_setting::lua_setter(lua::state &l, bool init) {
lua::stack_sentry s(l, -2);
Base::lua_setter(l, init);
if (init && do_convert(l, -1).first) { init_x11(); }
++s;
}
void out_to_x_setting::cleanup(lua::state &l) {
lua::stack_sentry s(l, -1);
if (do_convert(l, -1).first) { deinit_x11(); }
l.pop();
}
#ifdef BUILD_XDBE
bool use_xdbe_setting::set_up(lua::state &l) {
// double_buffer makes no sense when not drawing to X
if (!out_to_x.get(l) || !display || !window.window) { return false; }
int major, minor;
if (XdbeQueryExtension(display, &major, &minor) == 0) {
NORM_ERR("No compatible double buffer extension found");
return false;
}
window.back_buffer =
XdbeAllocateBackBufferName(display, window.window, XdbeBackground);
if (window.back_buffer != None) {
window.drawable = window.back_buffer;
} else {
NORM_ERR("Failed to allocate back buffer");
return false;
}
XFlush(display);
return true;
}
void use_xdbe_setting::lua_setter(lua::state &l, bool init) {
lua::stack_sentry s(l, -2);
Base::lua_setter(l, init);
if (init && do_convert(l, -1).first) {
if (!set_up(l)) {
l.pop();
l.pushboolean(false);
}
fprintf(stderr, PACKAGE_NAME ": drawing to %s buffer\n",
do_convert(l, -1).first ? "double" : "single");
}
++s;
}
#else
bool use_xpmdb_setting::set_up(lua::state &l) {
// double_buffer makes no sense when not drawing to X
if (!out_to_x.get(l)) return false;
window.back_buffer =
XCreatePixmap(display, window.window, window.width + 1, window.height + 1,
DefaultDepth(display, screen));
if (window.back_buffer != None) {
window.drawable = window.back_buffer;
} else {
NORM_ERR("Failed to allocate back buffer");
return false;
}
XFlush(display);
return true;
}
void use_xpmdb_setting::lua_setter(lua::state &l, bool init) {
lua::stack_sentry s(l, -2);
Base::lua_setter(l, init);
if (init && do_convert(l, -1).first) {
if (!set_up(l)) {
l.pop();
l.pushboolean(false);
}
fprintf(stderr, PACKAGE_NAME ": drawing to %s buffer\n",
do_convert(l, -1).first ? "double" : "single");
}
++s;
}
#endif
} // namespace priv
conky::simple_config_setting<int> head_index("xinerama_head", 0, true);
priv::out_to_x_setting out_to_x;
#ifdef BUILD_XFT
conky::simple_config_setting<bool> use_xft("use_xft", false, false);
#endif
conky::simple_config_setting<bool> forced_redraw("forced_redraw", false, false);
#ifdef BUILD_XDBE
priv::use_xdbe_setting use_xdbe;
#else
priv::use_xpmdb_setting use_xpmdb;
#endif
#ifdef BUILD_IMLIB2
/*
* the only reason this is not in imlib2.cc is so that we can be sure it's
* setter executes after use_xdbe
*/
imlib_cache_size_setting imlib_cache_size;
#endif
/******************** </SETTINGS> ************************/
/* WARNING, this type not in Xlib spec */
static int x11_error_handler(Display *d, XErrorEvent *err) {
char *error_name = nullptr;
bool name_allocated = false;
char *code_description = nullptr;
bool code_allocated = false;
#ifdef HAVE_XCB_ERRORS
if (xcb_errors_ctx != nullptr) {
const char *extension;
const char *base_name = xcb_errors_get_name_for_error(
xcb_errors_ctx, err->error_code, &extension);
if (extension != nullptr) {
const std::size_t size = strlen(base_name) + strlen(extension) + 4;
error_name = new char(size);
snprintf(error_name, size, "%s (%s)", base_name, extension);
name_allocated = true;
} else {
error_name = const_cast<char *>(base_name);
}
const char *major =
xcb_errors_get_name_for_major_code(xcb_errors_ctx, err->request_code);
const char *minor = xcb_errors_get_name_for_minor_code(
xcb_errors_ctx, err->request_code, err->minor_code);
if (minor != nullptr) {
const std::size_t size = strlen(base_name) + strlen(extension) + 4;
code_description = new char(size);
snprintf(code_description, size, "%s - %s", major, minor);
code_allocated = true;
} else {
code_description = const_cast<char *>(major);
}
}
#endif
if (error_name == nullptr) {
if (err->error_code > 0 && err->error_code < 17) {
static std::array<std::string, 17> NAMES = {
"request", "value", "window", "pixmap", "atom",
"cursor", "font", "match", "drawable", "access",
"alloc", "colormap", "G context", "ID choice", "name",
"length", "implementation"};
error_name = const_cast<char *>(NAMES[err->error_code].c_str());
} else {
static char code_name_buffer[5];
error_name = reinterpret_cast<char *>(&code_name_buffer);
snprintf(error_name, 4, "%d", err->error_code);
}
}
if (code_description == nullptr) {
const std::size_t size = 37;
code_description = new char(size);
snprintf(code_description, size, "error code: [major: %i, minor: %i]",
err->request_code, err->minor_code);
code_allocated = true;
}
DBGP(
"X %s Error:\n"
"Display: %lx, XID: %li, Serial: %lu\n"
"%s",
error_name, reinterpret_cast<uint64_t>(err->display),
static_cast<int64_t>(err->resourceid), err->serial, code_description);
if (name_allocated) free(error_name);
if (code_allocated) free(code_description);
return 0;
}
__attribute__((noreturn)) static int x11_ioerror_handler(Display *d) {
CRIT_ERR("X IO Error: Display %lx\n", reinterpret_cast<uint64_t>(d));
}
/* X11 initializer */
static void init_x11() {
DBGP("enter init_x11()");
if (display == nullptr) {
const std::string &dispstr = display_name.get(*state);
// passing nullptr to XOpenDisplay should open the default display
const char *disp = static_cast<unsigned int>(!dispstr.empty()) != 0u
? dispstr.c_str()
: nullptr;
if ((display = XOpenDisplay(disp)) == nullptr) {
std::string err =
std::string("can't open display: ") + XDisplayName(disp);
#ifdef BUILD_WAYLAND
fprintf(stderr, "%s\n", err.c_str());
return;
#else /* BUILD_WAYLAND */
throw std::runtime_error(err);
#endif /* BUILD_WAYLAND */
}
}
info.x11.monitor.number = 1;
info.x11.monitor.current = 0;
info.x11.desktop.current = 1;
info.x11.desktop.number = 1;
info.x11.desktop.all_names.clear();
info.x11.desktop.name.clear();
screen = DefaultScreen(display);
display_width = DisplayWidth(display, screen);
display_height = DisplayHeight(display, screen);
get_x11_desktop_info(display, 0);
update_workarea();
#ifdef HAVE_XCB_ERRORS
auto connection = xcb_connect(NULL, NULL);
if (!xcb_connection_has_error(connection)) {
if (xcb_errors_context_new(connection, &xcb_errors_ctx) != Success) {
xcb_errors_ctx = nullptr;
}
}
#endif /* HAVE_XCB_ERRORS */
/* WARNING, this type not in Xlib spec */
XSetErrorHandler(&x11_error_handler);
XSetIOErrorHandler(&x11_ioerror_handler);
DBGP("leave init_x11()");
}
void deinit_x11() {
if (display) {
DBGP("deinit_x11()");
XCloseDisplay(display);
display = nullptr;
}
}
static void update_workarea() {
/* default work area is display */
workarea[0] = 0;
workarea[1] = 0;
workarea[2] = display_width;
workarea[3] = display_height;
#ifdef BUILD_XINERAMA
/* if xinerama is being used, adjust workarea to the head's area */
int useless1, useless2;
if (XineramaQueryExtension(display, &useless1, &useless2) == 0) {
return; /* doesn't even have xinerama */
}
if (XineramaIsActive(display) == 0) {
return; /* has xinerama but isn't using it */
}
int heads = 0;
XineramaScreenInfo *si = XineramaQueryScreens(display, &heads);
if (si == nullptr) {
NORM_ERR(
"warning: XineramaQueryScreen returned nullptr, ignoring head "
"settings");
return; /* queryscreens failed? */
}
int i = head_index.get(*state);
if (i < 0 || i >= heads) {
NORM_ERR("warning: invalid head index, ignoring head settings");
return;
}
XineramaScreenInfo *ps = &si[i];
workarea[0] = ps->x_org;
workarea[1] = ps->y_org;
workarea[2] = workarea[0] + ps->width;
workarea[3] = workarea[1] + ps->height;
XFree(si);
DBGP("Fixed xinerama area to: %d %d %d %d", workarea[0], workarea[1],
workarea[2], workarea[3]);
#endif
}
/* Find root window and desktop window.
* Return desktop window on success,
* and set root and desktop byref return values.
* Return 0 on failure. */
static Window find_desktop_window(Window *p_root, Window *p_desktop) {
Atom type;
int format, i;
unsigned long nitems, bytes;
unsigned int n;
if (!display) return 0;
Window root = RootWindow(display, screen);
Window win;
Window troot, parent, *children;
unsigned char *buf = nullptr;
if ((p_root == nullptr) || (p_desktop == nullptr)) { return 0; }
/* some window managers set __SWM_VROOT to some child of root window */
XQueryTree(display, root, &troot, &parent, &children, &n);
for (i = 0; i < static_cast<int>(n); i++) {
if (XGetWindowProperty(display, children[i], ATOM(__SWM_VROOT), 0, 1, False,
XA_WINDOW, &type, &format, &nitems, &bytes,
&buf) == Success &&
type == XA_WINDOW) {
win = *reinterpret_cast<Window *>(buf);
XFree(buf);
XFree(children);
fprintf(stderr,
PACKAGE_NAME
": desktop window (%lx) found from __SWM_VROOT property\n",
win);
fflush(stderr);
*p_root = win;
*p_desktop = win;
return win;
}
if (buf != nullptr) {
XFree(buf);
buf = nullptr;
}
}
XFree(children);
/* get subwindows from root */
win = find_subwindow(root, -1, -1);
update_workarea();
win = find_subwindow(win, workarea[2], workarea[3]);
if (buf != nullptr) {
XFree(buf);
buf = nullptr;
}
if (win != root) {
fprintf(stderr,
PACKAGE_NAME
": desktop window (%lx) is subwindow of root window (%lx)\n",
win, root);
} else {
fprintf(stderr, PACKAGE_NAME ": desktop window (%lx) is root window\n",
win);
}
fflush(stderr);
*p_root = root;
*p_desktop = win;
return win;
}
#ifdef OWN_WINDOW
#ifdef BUILD_ARGB
namespace {
/* helper function for set_transparent_background() */
void do_set_background(Window win, uint8_t alpha) {
Colour colour = background_colour.get(*state);
colour.alpha = alpha;
unsigned long xcolor = colour.to_x11_color(display, screen, true);
XSetWindowBackground(display, win, xcolor);
}
} // namespace
#endif /* BUILD_ARGB */
/* if no argb visual is configured sets background to ParentRelative for the
Window and all parents, else real transparency is used */
void set_transparent_background(Window win) {
#ifdef BUILD_ARGB
if (have_argb_visual) {
// real transparency
do_set_background(win, set_transparent.get(*state)
? 0
: own_window_argb_value.get(*state));
return;
}
#endif /* BUILD_ARGB */
// pseudo transparency
if (set_transparent.get(*state)) {
Window parent = win;
unsigned int i;
for (i = 0; i < 50 && parent != RootWindow(display, screen); i++) {
Window r, *children;
unsigned int n;
XSetWindowBackgroundPixmap(display, parent, ParentRelative);
XQueryTree(display, parent, &r, &parent, &children, &n);
XFree(children);
}
return;
}
#ifdef BUILD_ARGB
do_set_background(win, 0);
#endif /* BUILD_ARGB */
}
#endif /* OWN_WINDOW */
#ifdef BUILD_ARGB
static int get_argb_visual(Visual **visual, int *depth) {
/* code from gtk project, gdk_screen_get_rgba_visual */
XVisualInfo visual_template;
XVisualInfo *visual_list;
int nxvisuals = 0, i;
visual_template.screen = screen;
visual_list =
XGetVisualInfo(display, VisualScreenMask, &visual_template, &nxvisuals);
for (i = 0; i < nxvisuals; i++) {
if (visual_list[i].depth == 32 && (visual_list[i].red_mask == 0xff0000 &&
visual_list[i].green_mask == 0x00ff00 &&
visual_list[i].blue_mask == 0x0000ff)) {
*visual = visual_list[i].visual;
*depth = visual_list[i].depth;
DBGP("Found ARGB Visual");
XFree(visual_list);
return 1;
}
}
// no argb visual available
DBGP("No ARGB Visual found");
XFree(visual_list);
return 0;
}
#endif /* BUILD_ARGB */
void destroy_window() {
#ifdef BUILD_XFT
if (window.xftdraw != nullptr) { XftDrawDestroy(window.xftdraw); }
#endif /* BUILD_XFT */
if (window.gc != nullptr) { XFreeGC(display, window.gc); }
memset(&window, 0, sizeof(struct conky_x11_window));
}
void x11_init_window(lua::state &l, bool own) {
DBGP("enter x11_init_window()");
// own is unused if OWN_WINDOW is not defined
(void)own;
#ifdef OWN_WINDOW
if (own) {
int depth = 0, flags = CWOverrideRedirect | CWBackingStore;
Visual *visual = nullptr;
if (find_desktop_window(&window.root, &window.desktop) == 0U) {
DBGP2("no desktop window found");
return;
}
window.visual = DefaultVisual(display, screen);
window.colourmap = DefaultColormap(display, screen);
depth = CopyFromParent;
visual = CopyFromParent;
#ifdef BUILD_ARGB
if (use_argb_visual.get(l) && (get_argb_visual(&visual, &depth) != 0)) {
have_argb_visual = true;
window.visual = visual;
window.colourmap = XCreateColormap(display, DefaultRootWindow(display),
window.visual, AllocNone);
}
#endif /* BUILD_ARGB */
int b = border_inner_margin.get(l) + border_width.get(l) +
border_outer_margin.get(l);
/* Sanity check to avoid making an invalid 0x0 window */
if (b == 0) { b = 1; }
XClassHint classHint;
// class_name must be a named local variable, so that c_str() remains
// valid until we call XmbSetWMProperties() or XSetClassHint. We use
// const_cast because, for whatever reason, res_name is not declared as
// const char *. XmbSetWMProperties hopefully doesn't modify the value
// (hell, even their own example app assigns a literal string constant to
// the field)
const std::string &class_name = own_window_class.get(l);
classHint.res_name = const_cast<char *>(class_name.c_str());
classHint.res_class = classHint.res_name;
if (own_window_type.get(l) == TYPE_OVERRIDE) {
/* An override_redirect True window.
* No WM hints or button processing needed. */
XSetWindowAttributes attrs = {ParentRelative,
0L,
0,
0L,
0,
0,
Always,
0L,
0L,
False,
StructureNotifyMask | ExposureMask,
0L,
True,
0,
0};
flags |= CWBackPixel;
#ifdef BUILD_ARGB
if (have_argb_visual) {
attrs.colormap = window.colourmap;
flags &= ~CWBackPixel;
flags |= CWBorderPixel | CWColormap;
}
#endif /* BUILD_ARGB */
/* Parent is desktop window (which might be a child of root) */
window.window =
XCreateWindow(display, window.desktop, window.x, window.y, b, b, 0,
depth, InputOutput, visual, flags, &attrs);
XLowerWindow(display, window.window);
XSetClassHint(display, window.window, &classHint);
fprintf(stderr, PACKAGE_NAME ": window type - override\n");
fflush(stderr);
} else { /* own_window_type.get(l) != TYPE_OVERRIDE */
/* A window managed by the window manager.
* Process hints and buttons. */
XSetWindowAttributes attrs = {
ParentRelative,
0L,
0,
0L,
0,
0,
Always,
0L,
0L,
False,
StructureNotifyMask | ExposureMask | ButtonPressMask |
ButtonReleaseMask,
0L,
own_window_type.get(l) == TYPE_UTILITY ? True : False,
0,
0};
XWMHints wmHint;
Atom xa;
flags |= CWBackPixel;
#ifdef BUILD_ARGB
if (have_argb_visual) {
attrs.colormap = window.colourmap;
flags &= ~CWBackPixel;
flags |= CWBorderPixel | CWColormap;
}
#endif /* BUILD_ARGB */
if (own_window_type.get(l) == TYPE_DOCK) { window.x = window.y = 0; }
/* Parent is root window so WM can take control */
window.window =
XCreateWindow(display, window.root, window.x, window.y, b, b, 0,
depth, InputOutput, visual, flags, &attrs);
uint16_t hints = own_window_hints.get(l);
wmHint.flags = InputHint | StateHint;
/* allow decorated windows to be given input focus by WM */
wmHint.input = TEST_HINT(hints, HINT_UNDECORATED) ? False : True;
#ifdef BUILD_XSHAPE
#ifdef BUILD_XFIXES
if (own_window_type.get(l) == TYPE_UTILITY) {
XRectangle rect;
XserverRegion region = XFixesCreateRegion(display, &rect, 1);
XFixesSetWindowShapeRegion(display, window.window, ShapeInput, 0, 0,
region);
XFixesDestroyRegion(display, region);
}
#endif /* BUILD_XFIXES */
if (!wmHint.input) {
/* allow only decorated windows to be given mouse input */
int major_version;
int minor_version;
if (XShapeQueryVersion(display, &major_version, &minor_version) == 0) {
NORM_ERR("Input shapes are not supported");
} else {
if (own_window.get(*state) &&
(own_window_type.get(*state) != TYPE_NORMAL ||
((TEST_HINT(own_window_hints.get(*state), HINT_UNDECORATED)) !=
0))) {
XShapeCombineRectangles(display, window.window, ShapeInput, 0, 0,
nullptr, 0, ShapeSet, Unsorted);
}
}
}
#endif /* BUILD_XSHAPE */
if (own_window_type.get(l) == TYPE_DOCK ||
own_window_type.get(l) == TYPE_PANEL) {
wmHint.initial_state = WithdrawnState;
} else {
wmHint.initial_state = NormalState;
}
XmbSetWMProperties(display, window.window, nullptr, nullptr, argv_copy,
argc_copy, nullptr, &wmHint, &classHint);
XStoreName(display, window.window, own_window_title.get(l).c_str());
/* Sets an empty WM_PROTOCOLS property */
XSetWMProtocols(display, window.window, nullptr, 0);
/* Set window type */
if ((xa = ATOM(_NET_WM_WINDOW_TYPE)) != None) {
Atom prop;
switch (own_window_type.get(l)) {
case TYPE_DESKTOP:
prop = ATOM(_NET_WM_WINDOW_TYPE_DESKTOP);
fprintf(stderr, PACKAGE_NAME ": window type - desktop\n");
fflush(stderr);
break;
case TYPE_DOCK:
prop = ATOM(_NET_WM_WINDOW_TYPE_DOCK);
fprintf(stderr, PACKAGE_NAME ": window type - dock\n");
fflush(stderr);
break;
case TYPE_PANEL:
prop = ATOM(_NET_WM_WINDOW_TYPE_DOCK);
fprintf(stderr, PACKAGE_NAME ": window type - panel\n");
fflush(stderr);
break;
case TYPE_UTILITY:
prop = ATOM(_NET_WM_WINDOW_TYPE_UTILITY);
fprintf(stderr, PACKAGE_NAME ": window type - utility\n");
fflush(stderr);
break;
case TYPE_NORMAL:
default:
prop = ATOM(_NET_WM_WINDOW_TYPE_NORMAL);
fprintf(stderr, PACKAGE_NAME ": window type - normal\n");
fflush(stderr);
break;
}
XChangeProperty(display, window.window, xa, XA_ATOM, 32,
PropModeReplace,
reinterpret_cast<unsigned char *>(&prop), 1);
}
/* Set desired hints */
/* Window decorations */
if (TEST_HINT(hints, HINT_UNDECORATED)) {
/* fprintf(stderr, PACKAGE_NAME": hint - undecorated\n");
fflush(stderr); */
xa = ATOM(_MOTIF_WM_HINTS);
if (xa != None) {
long prop[5] = {2, 0, 0, 0, 0};
XChangeProperty(display, window.window, xa, xa, 32, PropModeReplace,
reinterpret_cast<unsigned char *>(prop), 5);
}
}
/* Below other windows */
if (TEST_HINT(hints, HINT_BELOW)) {
/* fprintf(stderr, PACKAGE_NAME": hint - below\n");
fflush(stderr); */
xa = ATOM(_WIN_LAYER);
if (xa != None) {
long prop = 0;
XChangeProperty(display, window.window, xa, XA_CARDINAL, 32,
PropModeAppend,
reinterpret_cast<unsigned char *>(&prop), 1);
}
xa = ATOM(_NET_WM_STATE);
if (xa != None) {
Atom xa_prop = ATOM(_NET_WM_STATE_BELOW);
XChangeProperty(display, window.window, xa, XA_ATOM, 32,
PropModeAppend,
reinterpret_cast<unsigned char *>(&xa_prop), 1);
}
}
/* Above other windows */
if (TEST_HINT(hints, HINT_ABOVE)) {
/* fprintf(stderr, PACKAGE_NAME": hint - above\n");
fflush(stderr); */
xa = ATOM(_WIN_LAYER);
if (xa != None) {
long prop = 6;
XChangeProperty(display, window.window, xa, XA_CARDINAL, 32,
PropModeAppend,
reinterpret_cast<unsigned char *>(&prop), 1);
}
xa = ATOM(_NET_WM_STATE);
if (xa != None) {
Atom xa_prop = ATOM(_NET_WM_STATE_ABOVE);
XChangeProperty(display, window.window, xa, XA_ATOM, 32,
PropModeAppend,
reinterpret_cast<unsigned char *>(&xa_prop), 1);
}
}
/* Sticky */
if (TEST_HINT(hints, HINT_STICKY)) {
/* fprintf(stderr, PACKAGE_NAME": hint - sticky\n");
fflush(stderr); */
xa = ATOM(_NET_WM_DESKTOP);
if (xa != None) {
CARD32 xa_prop = 0xFFFFFFFF;
XChangeProperty(display, window.window, xa, XA_CARDINAL, 32,
PropModeAppend,
reinterpret_cast<unsigned char *>(&xa_prop), 1);
}
xa = ATOM(_NET_WM_STATE);
if (xa != None) {
Atom xa_prop = ATOM(_NET_WM_STATE_STICKY);
XChangeProperty(display, window.window, xa, XA_ATOM, 32,
PropModeAppend,
reinterpret_cast<unsigned char *>(&xa_prop), 1);
}
}
/* Skip taskbar */
if (TEST_HINT(hints, HINT_SKIP_TASKBAR)) {
/* fprintf(stderr, PACKAGE_NAME": hint - skip_taskbar\n");
fflush(stderr); */
xa = ATOM(_NET_WM_STATE);
if (xa != None) {
Atom xa_prop = ATOM(_NET_WM_STATE_SKIP_TASKBAR);
XChangeProperty(display, window.window, xa, XA_ATOM, 32,
PropModeAppend,
reinterpret_cast<unsigned char *>(&xa_prop), 1);
}
}
/* Skip pager */
if (TEST_HINT(hints, HINT_SKIP_PAGER)) {
/* fprintf(stderr, PACKAGE_NAME": hint - skip_pager\n");
fflush(stderr); */
xa = ATOM(_NET_WM_STATE);
if (xa != None) {
Atom xa_prop = ATOM(_NET_WM_STATE_SKIP_PAGER);
XChangeProperty(display, window.window, xa, XA_ATOM, 32,
PropModeAppend,
reinterpret_cast<unsigned char *>(&xa_prop), 1);
}
}
}
fprintf(stderr, PACKAGE_NAME ": drawing to created window (0x%lx)\n",
window.window);
fflush(stderr);
XMapWindow(display, window.window);
} else
#endif /* OWN_WINDOW */
{
XWindowAttributes attrs;
if (window.window == 0u) {
window.window = find_desktop_window(&window.root, &window.desktop);
}
if (window.window == 0u) {
DBGP2("no root window found");
return;
}
window.visual = DefaultVisual(display, screen);
window.colourmap = DefaultColormap(display, screen);
if (XGetWindowAttributes(display, window.window, &attrs) != 0) {
window.width = attrs.width;
window.height = attrs.height;
}
fprintf(stderr, PACKAGE_NAME ": drawing to desktop window\n");
}
/* Drawable is same as window. This may be changed by double buffering. */
window.drawable = window.window;
XFlush(display);
int64_t input_mask = ExposureMask | PropertyChangeMask;
#ifdef OWN_WINDOW
if (own_window.get(l)) {
input_mask |= StructureNotifyMask | ButtonPressMask | ButtonReleaseMask;
}
#ifdef BUILD_MOUSE_EVENTS
/* it's not recommended to add event masks to special windows in X; causes a
* crash */
if (own && own_window_type.get(l) != TYPE_DESKTOP) {
input_mask |= PointerMotionMask | ButtonPressMask | ButtonReleaseMask;
}
bool xinput_ok = false;
#ifdef BUILD_XINPUT
do { // not loop
int _ignored; // segfault if NULL
if (!XQueryExtension(display, "XInputExtension", &window.xi_opcode,
&_ignored, &_ignored)) {
// events will still ~work but let the user know why they're buggy
NORM_ERR("XInput extension is not supported by X11!");
break;
}
int32_t major = 2, minor = 0;
uint32_t retval = XIQueryVersion(display, &major, &minor);
if (retval != Success) {
NORM_ERR("Error: XInput 2.0 is not supported!");
break;
}
const std::size_t mask_size = (XI_LASTEVENT + 7) / 8;
unsigned char mask_bytes[mask_size] = {0}; /* must be zeroed! */
XISetMask(mask_bytes, XI_Motion);
XIEventMask ev_masks[1];
ev_masks[0].deviceid = XIAllDevices;
ev_masks[0].mask_len = sizeof(mask_bytes);
ev_masks[0].mask = mask_bytes;
XISelectEvents(display, window.root, ev_masks, 1);
xinput_ok = true;
} while (false);
#endif /* BUILD_XINPUT */
if (!xinput_ok && own && own_window_type.get(l) != TYPE_DESKTOP) {
input_mask |= EnterWindowMask | LeaveWindowMask;
}
#endif /* BUILD_MOUSE_EVENTS */
#endif /* OWN_WINDOW */
window.event_mask = input_mask;
XSelectInput(display, window.window, input_mask);
window_created = 1;
DBGP("leave x11_init_window()");
}
static Window find_subwindow(Window win, int w, int h) {
unsigned int i, j;
Window troot, parent, *children;
unsigned int n;
/* search subwindows with same size as display or work area */
for (i = 0; i < 10; i++) {
XQueryTree(display, win, &troot, &parent, &children, &n);
for (j = 0; j < n; j++) {
XWindowAttributes attrs;
if (XGetWindowAttributes(display, children[j], &attrs) != 0) {
/* Window must be mapped and same size as display or
* work space */
if (attrs.map_state != 0 &&
((attrs.width == display_width && attrs.height == display_height) ||
(attrs.width == w && attrs.height == h))) {
win = children[j];
break;
}
}
}
XFree(children);
if (j == n) { break; }
}
return win;
}
void create_gc() {
XGCValues values;
values.graphics_exposures = 0;
values.function = GXcopy;
window.gc = XCreateGC(display, window.drawable,
GCFunction | GCGraphicsExposures, &values);
}
// Get current desktop number
static inline void get_x11_desktop_current(Display *current_display,
Window root, Atom atom) {
Atom actual_type;
int actual_format;
unsigned long nitems;
unsigned long bytes_after;
unsigned char *prop = nullptr;
struct information *current_info = &info;
if (atom == None) { return; }
if ((XGetWindowProperty(current_display, root, atom, 0, 1L, False,
XA_CARDINAL, &actual_type, &actual_format, &nitems,
&bytes_after, &prop) == Success) &&
(actual_type == XA_CARDINAL) && (nitems == 1L) && (actual_format == 32)) {
current_info->x11.desktop.current = prop[0] + 1;
}
if (prop != nullptr) { XFree(prop); }
}
// Get total number of available desktops
static inline void get_x11_desktop_number(Display *current_display, Window root,
Atom atom) {
Atom actual_type;
int actual_format;
unsigned long nitems;
unsigned long bytes_after;
unsigned char *prop = nullptr;
struct information *current_info = &info;
if (atom == None) { return; }
if ((XGetWindowProperty(current_display, root, atom, 0, 1L, False,
XA_CARDINAL, &actual_type, &actual_format, &nitems,
&bytes_after, &prop) == Success) &&
(actual_type == XA_CARDINAL) && (nitems == 1L) && (actual_format == 32)) {
current_info->x11.desktop.number = prop[0];
}
if (prop != nullptr) { XFree(prop); }
}
// Get all desktop names
static inline void get_x11_desktop_names(Display *current_display, Window root,
Atom atom) {
Atom actual_type;
int actual_format;
unsigned long nitems;
unsigned long bytes_after;
unsigned char *prop = nullptr;
struct information *current_info = &info;
if (atom == None) { return; }
if ((XGetWindowProperty(current_display, root, atom, 0, (~0L), False,
ATOM(UTF8_STRING), &actual_type, &actual_format,
&nitems, &bytes_after, &prop) == Success) &&
(actual_type == ATOM(UTF8_STRING)) && (nitems > 0L) &&
(actual_format == 8)) {
current_info->x11.desktop.all_names.assign(
reinterpret_cast<const char *>(prop), nitems);
}
if (prop != nullptr) { XFree(prop); }
}
// Get current desktop name
static inline void get_x11_desktop_current_name(const std::string &names) {
struct information *current_info = &info;
unsigned int i = 0, j = 0;
int k = 0;
while (i < names.size()) {
if (names[i++] == '\0') {
if (++k == current_info->x11.desktop.current) {
current_info->x11.desktop.name.assign(names.c_str() + j);
break;
}
j = i;
}
}
}
void get_x11_desktop_info(Display *current_display, Atom atom) {
Window root;
static Atom atom_current, atom_number, atom_names;
struct information *current_info = &info;
XWindowAttributes window_attributes;
root = RootWindow(current_display, current_info->x11.monitor.current);
/* Check if we initialise else retrieve changed property */
if (atom == 0) {
atom_current = XInternAtom(current_display, "_NET_CURRENT_DESKTOP", True);
atom_number = XInternAtom(current_display, "_NET_NUMBER_OF_DESKTOPS", True);
atom_names = XInternAtom(current_display, "_NET_DESKTOP_NAMES", True);
get_x11_desktop_current(current_display, root, atom_current);
get_x11_desktop_number(current_display, root, atom_number);
get_x11_desktop_names(current_display, root, atom_names);
get_x11_desktop_current_name(current_info->x11.desktop.all_names);
/* Set the PropertyChangeMask on the root window, if not set */
XGetWindowAttributes(display, root, &window_attributes);
if ((window_attributes.your_event_mask & PropertyChangeMask) == 0) {
XSetWindowAttributes attributes;
attributes.event_mask =
window_attributes.your_event_mask | PropertyChangeMask;
XChangeWindowAttributes(display, root, CWEventMask, &attributes);
XGetWindowAttributes(display, root, &window_attributes);
}
} else {
if (atom == atom_current) {
get_x11_desktop_current(current_display, root, atom_current);
get_x11_desktop_current_name(current_info->x11.desktop.all_names);
} else if (atom == atom_number) {
get_x11_desktop_number(current_display, root, atom_number);
} else if (atom == atom_names) {
get_x11_desktop_names(current_display, root, atom_names);
get_x11_desktop_current_name(current_info->x11.desktop.all_names);
}
}
}
static const char NOT_IN_X[] = "Not running in X";
void print_monitor(struct text_object *obj, char *p, unsigned int p_max_size) {
(void)obj;
if (!out_to_x.get(*state)) {
strncpy(p, NOT_IN_X, p_max_size);
return;
}
snprintf(p, p_max_size, "%d", XDefaultScreen(display));
}
void print_monitor_number(struct text_object *obj, char *p,
unsigned int p_max_size) {
(void)obj;
if (!out_to_x.get(*state)) {
strncpy(p, NOT_IN_X, p_max_size);
return;
}
snprintf(p, p_max_size, "%d", XScreenCount(display));
}
void print_desktop(struct text_object *obj, char *p, unsigned int p_max_size) {
(void)obj;
if (!out_to_x.get(*state)) {
strncpy(p, NOT_IN_X, p_max_size);
return;
}
snprintf(p, p_max_size, "%d", info.x11.desktop.current);
}
void print_desktop_number(struct text_object *obj, char *p,
unsigned int p_max_size) {
(void)obj;
if (!out_to_x.get(*state)) {
strncpy(p, NOT_IN_X, p_max_size);
return;
}
snprintf(p, p_max_size, "%d", info.x11.desktop.number);
}
void print_desktop_name(struct text_object *obj, char *p,
unsigned int p_max_size) {
(void)obj;
if (!out_to_x.get(*state)) {
strncpy(p, NOT_IN_X, p_max_size);
} else {
strncpy(p, info.x11.desktop.name.c_str(), p_max_size);
}
}
#ifdef OWN_WINDOW
/* reserve window manager space */
void set_struts(int sidenum) {
Atom strut;
if ((strut = ATOM(_NET_WM_STRUT)) != None) {
/* reserve space at left, right, top, bottom */
signed long sizes[12] = {0};
int i;
/* define strut depth */
switch (sidenum) {
case 0:
/* left side */
sizes[0] = window.x + window.width;
break;
case 1:
/* right side */
sizes[1] = display_width - window.x;
break;
case 2:
/* top side */
sizes[2] = window.y + window.height;
break;
case 3:
/* bottom side */
sizes[3] = display_height - window.y;
break;
}
/* define partial strut length */
if (sidenum <= 1) {
sizes[4 + (sidenum * 2)] = window.y;
sizes[5 + (sidenum * 2)] = window.y + window.height;
} else if (sidenum <= 3) {
sizes[4 + (sidenum * 2)] = window.x;
sizes[5 + (sidenum * 2)] = window.x + window.width;
}
/* check constraints */
for (i = 0; i < 12; i++) {
if (sizes[i] < 0) {
sizes[i] = 0;
} else {
if (i <= 1 || i >= 8) {
if (sizes[i] > display_width) { sizes[i] = display_width; }
} else {
if (sizes[i] > display_height) { sizes[i] = display_height; }
}
}
}
XChangeProperty(display, window.window, strut, XA_CARDINAL, 32,
PropModeReplace, reinterpret_cast<unsigned char *>(&sizes),
4);
if ((strut = ATOM(_NET_WM_STRUT_PARTIAL)) != None) {
XChangeProperty(display, window.window, strut, XA_CARDINAL, 32,
PropModeReplace,
reinterpret_cast<unsigned char *>(&sizes), 12);
}
}
}
#endif /* OWN_WINDOW */
#ifdef BUILD_XDBE
void xdbe_swap_buffers() {
if (use_xdbe.get(*state)) {
XdbeSwapInfo swap;
swap.swap_window = window.window;
swap.swap_action = XdbeBackground;
XdbeSwapBuffers(display, &swap, 1);
}
}
#else
void xpmdb_swap_buffers(void) {
if (use_xpmdb.get(*state)) {
XCopyArea(display, window.back_buffer, window.window, window.gc, 0, 0,
window.width, window.height, 0, 0);
XSetForeground(display, window.gc, 0);
XFillRectangle(display, window.drawable, window.gc, 0, 0, window.width,
window.height);
XFlush(display);
}
}
#endif /* BUILD_XDBE */
void print_kdb_led(const int keybit, char *p, unsigned int p_max_size) {
XKeyboardState x;
XGetKeyboardControl(display, &x);
snprintf(p, p_max_size, "%s", (x.led_mask & keybit ? "On" : "Off"));
}
void print_key_caps_lock(struct text_object *obj, char *p,
unsigned int p_max_size) {
(void)obj;
print_kdb_led(1, p, p_max_size);
}
void print_key_num_lock(struct text_object *obj, char *p,
unsigned int p_max_size) {
(void)obj;
print_kdb_led(2, p, p_max_size);
}
void print_key_scroll_lock(struct text_object *obj, char *p,
unsigned int p_max_size) {
(void)obj;
print_kdb_led(4, p, p_max_size);
}
void print_keyboard_layout(struct text_object *obj, char *p,
unsigned int p_max_size) {
(void)obj;
char *group = NULL;
XkbStateRec state;
XkbDescPtr desc;
XkbGetState(display, XkbUseCoreKbd, &state);
desc = XkbGetKeyboard(display, XkbAllComponentsMask, XkbUseCoreKbd);
group = XGetAtomName(display, desc->names->groups[state.group]);
snprintf(p, p_max_size, "%s", (group != NULL ? group : "unknown"));
XFree(group);
XkbFreeKeyboard(desc, XkbGBN_AllComponentsMask, True);
}
void print_mouse_speed(struct text_object *obj, char *p,
unsigned int p_max_size) {
(void)obj;
int acc_num = 0;
int acc_denom = 0;
int threshold = 0;
XGetPointerControl(display, &acc_num, &acc_denom, &threshold);
snprintf(p, p_max_size, "%d%%", (110 - threshold));
}
InputEvent *xev_as_input_event(XEvent &ev) {
if (ev.type == KeyPress || ev.type == KeyRelease || ev.type == ButtonPress ||
ev.type == ButtonRelease || ev.type == MotionNotify ||
ev.type == EnterNotify || ev.type == LeaveNotify) {
return reinterpret_cast<InputEvent *>(&ev);
} else {
return nullptr;
}
}
void propagate_x11_event(XEvent &ev) {
InputEvent *i_ev = xev_as_input_event(ev);
/* forward the event to the desktop window */
if (i_ev != nullptr) {
i_ev->common.window = window.desktop;
i_ev->common.x = i_ev->common.x_root;
i_ev->common.y = i_ev->common.y_root;
}
XSendEvent(display, window.desktop, False, window.event_mask, &ev);
int _revert_to;
Window focused;
XGetInputFocus(display, &focused, &_revert_to);
if (focused == window.window) {
Time time = CurrentTime;
if (i_ev != nullptr) { time = i_ev->common.time; }
XSetInputFocus(display, window.desktop, RevertToPointerRoot, time);
}
}
#ifdef BUILD_MOUSE_EVENTS
// Assuming parent has a simple linear stack of descendants, this function
// returns the last leaf on the graph.
inline Window last_descendant(Display *display, Window parent) {
Window _ignored, *children;
std::uint32_t count;
Window current = parent;
while (
XQueryTree(display, current, &_ignored, &_ignored, &children, &count) &&
count != 0) {
current = children[count - 1];
XFree(children);
}
return current;
}
Window query_x11_window_at_pos(Display *display, int x, int y) {
Window root = DefaultRootWindow(display);
// these values are ignored but NULL can't be passed
Window root_return;
int root_x_return, root_y_return, win_x_return, win_y_return;
unsigned int mask_return;
Window last = None;
XQueryPointer(display, window.root, &root_return, &last, &root_x_return,
&root_y_return, &win_x_return, &win_y_return, &mask_return);
// X11 correctly returns a window which covers conky area, but returned
// window is not window.window, but instead a parent node in some cases and
// the window.window we want to check for is a 1x1 child of that window.
return last_descendant(display, last);
}
#endif /* BUILD_MOUSE_EVENTS */
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