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conky/src/display-x11.cc

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/*
*
* Conky, a system monitor, based on torsmo
*
* Please see COPYING for details
*
* Copyright (C) 2018-2021 François Revol et al.
* 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/extensions/XI2.h>
#include <config.h>
#ifdef BUILD_X11
#include <X11/X.h>
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wvariadic-macros"
#include <X11/Xutil.h>
#ifdef BUILD_XFT
#include <X11/Xlib.h>
#endif /* BUILD_XFT */
#pragma GCC diagnostic pop
#ifdef BUILD_XDAMAGE
#include <X11/extensions/Xdamage.h>
#endif /* BUILD_XDAMAGE */
#include "fonts.h"
#ifdef BUILD_IMLIB2
#include "imlib2.h"
#endif /* BUILD_IMLIB2 */
#ifdef BUILD_MOUSE_EVENTS
#include "mouse-events.h"
#ifdef BUILD_XINPUT
#include <X11/extensions/XInput2.h>
#endif /* BUILD_XINPUT */
#endif /* BUILD_MOUSE_EVENTS */
#endif /* BUILD_X11 */
#include <iostream>
#include <sstream>
#include <unordered_map>
#include <cstdint>
#include <vector>
#include "colours.h"
#include "conky.h"
#include "display-x11.hh"
#include "gui.h"
#include "llua.h"
/* TODO: cleanup global namespace */
#ifdef BUILD_X11
#include "x11.h"
#include "logging.h"
// TODO: cleanup externs (move to conky.h ?)
#ifdef OWN_WINDOW
extern int fixed_size, fixed_pos;
#endif /* OWN_WINDOW */
extern int text_start_x, text_start_y; /* text start position in window */
extern int text_offset_x, text_offset_y; /* offset for start position */
extern int text_width,
text_height; /* initially 1 so no zero-sized window is created */
extern double current_update_time, next_update_time, last_update_time;
void update_text();
extern int need_to_update;
int get_border_total();
extern conky::range_config_setting<int> maximum_width;
extern Colour current_color;
#ifdef BUILD_XFT
static int xft_dpi = -1;
#endif /* BUILD_XFT */
/* for x_fonts */
struct x_font_list {
XFontStruct *font;
XFontSet fontset;
#ifdef BUILD_XFT
XftFont *xftfont;
int font_alpha;
#endif
x_font_list()
: font(nullptr),
fontset(nullptr)
#ifdef BUILD_XFT
,
xftfont(nullptr),
font_alpha(0xffff)
#endif
{
}
};
static std::vector<x_font_list> x_fonts; /* indexed by selected_font */
#ifdef BUILD_XFT
namespace {
class xftalpha_setting : public conky::simple_config_setting<float> {
using Base = conky::simple_config_setting<float>;
protected:
void lua_setter(lua::state &l, bool init) override {
lua::stack_sentry s(l, -2);
Base::lua_setter(l, init);
if (init && out_to_x.get(*state)) {
x_fonts.resize(std::max(1, static_cast<int>(fonts.size())));
x_fonts[0].font_alpha = do_convert(l, -1).first * 0xffff;
}
++s;
}
public:
xftalpha_setting() : Base("xftalpha", 1.0, false) {}
};
xftalpha_setting xftalpha;
} // namespace
#endif /* BUILD_XFT */
static void X11_create_window();
struct _x11_stuff_s {
Region region;
#ifdef BUILD_XDAMAGE
Damage damage;
XserverRegion region2, part;
int event_base, error_base;
#endif
} x11_stuff;
static void X11_create_window() {
if (!window.window) { return; }
setup_fonts();
load_fonts(utf8_mode.get(*state));
#ifdef BUILD_XFT
if (use_xft.get(*state)) {
auto dpi = XGetDefault(display, "Xft", "dpi");
if (dpi) { xft_dpi = strtol(dpi, nullptr, 10); }
}
#endif /* BUILD_XFT */
update_text_area(); /* to position text/window on screen */
#ifdef OWN_WINDOW
if (own_window.get(*state)) {
if (fixed_pos == 0) {
XMoveWindow(display, window.window, window.x, window.y);
}
set_transparent_background(window.window);
}
#endif
create_gc();
draw_stuff();
x11_stuff.region = XCreateRegion();
#ifdef BUILD_XDAMAGE
if (XDamageQueryExtension(display, &x11_stuff.event_base,
&x11_stuff.error_base) == 0) {
NORM_ERR("Xdamage extension unavailable");
x11_stuff.damage = 0;
} else {
x11_stuff.damage =
XDamageCreate(display, window.window, XDamageReportNonEmpty);
x11_stuff.region2 = XFixesCreateRegionFromWindow(display, window.window, 0);
x11_stuff.part = XFixesCreateRegionFromWindow(display, window.window, 0);
}
#endif /* BUILD_XDAMAGE */
selected_font = 0;
update_text_area(); /* to get initial size of the window */
}
#endif /* BUILD_X11 */
namespace conky {
namespace {
#ifdef BUILD_X11
conky::display_output_x11 x11_output;
#else
conky::disabled_display_output x11_output_disabled("x11", "BUILD_X11");
#endif
} // namespace
extern void init_x11_output() {}
namespace priv {} // namespace priv
#ifdef BUILD_X11
display_output_x11::display_output_x11() : display_output_base("x11") {
is_graphical = true;
priority = 2;
}
bool display_output_x11::detect() {
if (out_to_x.get(*state)) {
DBGP2("Display output '%s' enabled in config.", name.c_str());
return true;
}
return false;
}
bool display_output_x11::initialize() {
X11_create_window();
return true;
}
bool display_output_x11::shutdown() {
deinit_x11();
return true;
}
bool display_output_x11::main_loop_wait(double t) {
/* wait for X event or timeout */
if (!display || !window.gc) return true;
if (XPending(display) == 0) {
fd_set fdsr;
struct timeval tv {};
int s;
// t = next_update_time - get_time();
t = std::min(std::max(t, 0.0), active_update_interval());
tv.tv_sec = static_cast<long>(t);
tv.tv_usec = static_cast<long>(t * 1000000) % 1000000;
FD_ZERO(&fdsr);
FD_SET(ConnectionNumber(display), &fdsr);
s = select(ConnectionNumber(display) + 1, &fdsr, nullptr, nullptr, &tv);
if (s == -1) {
if (errno != EINTR) { NORM_ERR("can't select(): %s", strerror(errno)); }
} else {
/* timeout */
if (s == 0) { update_text(); }
}
}
if (need_to_update != 0) {
#ifdef OWN_WINDOW
int wx = window.x, wy = window.y;
#endif
need_to_update = 0;
selected_font = 0;
update_text_area();
#ifdef OWN_WINDOW
if (own_window.get(*state)) {
int changed = 0;
int border_total = get_border_total();
/* resize window if it isn't right size */
if ((fixed_size == 0) &&
(text_width + 2 * border_total != window.width ||
text_height + 2 * border_total != window.height)) {
window.width = text_width + 2 * border_total;
window.height = text_height + 2 * border_total;
draw_stuff(); /* redraw everything in our newly sized window */
XResizeWindow(display, window.window, window.width,
window.height); /* resize window */
set_transparent_background(window.window);
#ifdef BUILD_XDBE
/* swap buffers */
xdbe_swap_buffers();
#else
if (use_xpmdb.get(*state)) {
XFreePixmap(display, window.back_buffer);
window.back_buffer =
XCreatePixmap(display, window.window, window.width, window.height,
DefaultDepth(display, screen));
if (window.back_buffer != None) {
window.drawable = window.back_buffer;
} else {
// this is probably reallllly bad
NORM_ERR("Failed to allocate back buffer");
}
XSetForeground(display, window.gc, 0);
XFillRectangle(display, window.drawable, window.gc, 0, 0,
window.width, window.height);
}
#endif
changed++;
/* update lua window globals */
llua_update_window_table(text_start_x, text_start_y, text_width,
text_height);
}
/* move window if it isn't in right position */
if ((fixed_pos == 0) && (window.x != wx || window.y != wy)) {
XMoveWindow(display, window.window, window.x, window.y);
changed++;
}
/* update struts */
if ((changed != 0) && own_window_type.get(*state) == TYPE_PANEL) {
int sidenum = -1;
DBGP("%s", _(PACKAGE_NAME ": defining struts\n"));
fflush(stderr);
switch (text_alignment.get(*state)) {
case TOP_LEFT:
case TOP_RIGHT:
case TOP_MIDDLE: {
sidenum = 2;
break;
}
case BOTTOM_LEFT:
case BOTTOM_RIGHT:
case BOTTOM_MIDDLE: {
sidenum = 3;
break;
}
case MIDDLE_LEFT: {
sidenum = 0;
break;
}
case MIDDLE_RIGHT: {
sidenum = 1;
break;
}
case NONE:
case MIDDLE_MIDDLE: /* XXX What about these? */;
}
set_struts(sidenum);
}
}
#endif
clear_text(1);
#if defined(BUILD_XDBE)
if (use_xdbe.get(*state)) {
#else
if (use_xpmdb.get(*state)) {
#endif
XRectangle r;
int border_total = get_border_total();
r.x = text_start_x - border_total;
r.y = text_start_y - border_total;
r.width = text_width + 2 * border_total;
r.height = text_height + 2 * border_total;
XUnionRectWithRegion(&r, x11_stuff.region, x11_stuff.region);
}
}
/* handle X events */
while (XPending(display) != 0) {
XEvent ev;
/* indicates whether processed event was consumed */
bool consumed = false;
XNextEvent(display, &ev);
#if defined(OWN_WINDOW) && defined(BUILD_MOUSE_EVENTS) && defined(BUILD_XINPUT)
// no need to check whether these events have been consumed because
// they're global and shouldn't be propagated
if (ev.type == GenericEvent && ev.xcookie.extension == window.xi_opcode) {
if (!XGetEventData(display, &ev.xcookie)) {
NORM_ERR("unable to get XInput event data");
continue;
}
auto *data = reinterpret_cast<XIDeviceEvent*>(ev.xcookie.data);
// the only way to differentiate between a scroll and move event is
// though valuators - move has first 2 set, other axis movements have other.
bool is_cursor_move = data->valuators.mask_len > 2 &&
XIMaskIsSet(data->valuators.mask, 0) && XIMaskIsSet(data->valuators.mask, 1);
if (data->evtype == XI_Motion && is_cursor_move) {
Window query_result = query_x11_window_at_pos(display, data->root_x, data->root_y);
static bool cursor_inside = false;
if ((query_result != 0 && query_result == window.window) ||
((query_result == window.desktop || query_result == window.root || query_result == 0) && data->root_x >= window.x && data->root_x < (window.x + window.width) &&
data->root_y >= window.y && data->root_y < (window.y + window.height))) {
// cursor is inside conky
modifier_state_t mods = x11_modifier_state(data->mods.effective);
llua_mouse_hook(mouse_move_event(
data->root_x - window.x, data->root_y - window.x,
data->root_x, data->root_y, mods
));
if (!cursor_inside) {
llua_mouse_hook(mouse_crossing_event(
mouse_event_t::AREA_ENTER,
data->root_x - window.x, data->root_y - window.x,
data->root_x, data->root_y
));
}
cursor_inside = true;
} else if (cursor_inside) {
llua_mouse_hook(mouse_crossing_event(
mouse_event_t::AREA_LEAVE,
data->root_x - window.x, data->root_y - window.x,
data->root_x, data->root_y
));
cursor_inside = false;
}
}
XFreeEventData(display, &ev.xcookie);
continue;
}
#endif /* BUILD_MOUSE_EVENTS && BUILD_XINPUT */
// Any of the remaining events apply to conky window
if (ev.xany.window != window.window) continue;
switch (ev.type) {
case Expose: {
XRectangle r;
r.x = ev.xexpose.x;
r.y = ev.xexpose.y;
r.width = ev.xexpose.width;
r.height = ev.xexpose.height;
XUnionRectWithRegion(&r, x11_stuff.region, x11_stuff.region);
XSync(display, False);
// modify for propagation
ev.xexpose.x += window.x;
ev.xexpose.y += window.y;
break;
}
case PropertyNotify: {
if (ev.xproperty.state == PropertyNewValue) {
get_x11_desktop_info(ev.xproperty.display, ev.xproperty.atom);
}
#ifdef USE_ARGB
if (!have_argb_visual) {
#endif
if (ev.xproperty.atom == ATOM(_XROOTPMAP_ID) ||
ev.xproperty.atom == ATOM(_XROOTMAP_ID)) {
if (forced_redraw.get(*state)) {
draw_stuff();
next_update_time = get_time();
need_to_update = 1;
}
}
#ifdef USE_ARGB
}
#endif
continue;
}
#ifdef OWN_WINDOW
case ReparentNotify:
/* make background transparent */
if (own_window.get(*state)) {
set_transparent_background(window.window);
}
continue;
case ConfigureNotify:
if (own_window.get(*state)) {
/* if window size isn't what expected, set fixed size */
if (ev.xconfigure.width != window.width ||
ev.xconfigure.height != window.height) {
if (window.width != 0 && window.height != 0) { fixed_size = 1; }
/* clear old stuff before screwing up
* size and pos */
clear_text(1);
{
XWindowAttributes attrs;
if (XGetWindowAttributes(display, window.window, &attrs) != 0) {
window.width = attrs.width;
window.height = attrs.height;
}
}
int border_total = get_border_total();
text_width = window.width - 2 * border_total;
text_height = window.height - 2 * border_total;
int mw = this->dpi_scale(maximum_width.get(*state));
if (text_width > mw && mw > 0) { text_width = mw; }
}
/* if position isn't what expected, set fixed pos
* total_updates avoids setting fixed_pos when window
* is set to weird locations when started */
/* // this is broken
if (total_updates >= 2 && !fixed_pos
&& (window.x != ev.xconfigure.x
|| window.y != ev.xconfigure.y)
&& (ev.xconfigure.x != 0
|| ev.xconfigure.y != 0)) {
fixed_pos = 1;
} */
}
continue;
case ButtonPress:
#ifdef BUILD_MOUSE_EVENTS
{
modifier_state_t mods = x11_modifier_state(ev.xbutton.state);
if (4 <= ev.xbutton.button && ev.xbutton.button <= 7) {
scroll_direction_t direction = x11_scroll_direction(ev.xbutton.button);
consumed = llua_mouse_hook(mouse_scroll_event(
ev.xbutton.x, ev.xbutton.y,
ev.xbutton.x_root, ev.xbutton.y_root,
direction, mods
));
} else {
mouse_button_t button = x11_mouse_button_code(ev.xbutton.button);
consumed = llua_mouse_hook(mouse_button_event(
mouse_event_t::MOUSE_PRESS,
ev.xbutton.x, ev.xbutton.y, ev.xbutton.x_root, ev.xbutton.y_root,
button, mods
));
}
}
#endif /* BUILD_MOUSE_EVENTS */
if (own_window.get(*state)) {
/* if an ordinary window with decorations */
if ((own_window_type.get(*state) == TYPE_NORMAL &&
!TEST_HINT(own_window_hints.get(*state), HINT_UNDECORATED)) ||
own_window_type.get(*state) == TYPE_DESKTOP) {
/* allow conky to hold input focus. */
break;
}
}
break;
case ButtonRelease:
#ifdef BUILD_MOUSE_EVENTS
/* don't report scroll release events */
if (4 > ev.xbutton.button || ev.xbutton.button > 7) {
modifier_state_t mods = x11_modifier_state(ev.xbutton.state);
mouse_button_t button = x11_mouse_button_code(ev.xbutton.button);
consumed = llua_mouse_hook(mouse_button_event(
mouse_event_t::MOUSE_RELEASE,
ev.xbutton.x, ev.xbutton.y, ev.xbutton.x_root, ev.xbutton.y_root,
button, mods
));
}
#endif /* BUILD_MOUSE_EVENTS */
if (own_window.get(*state)) {
/* if an ordinary window with decorations */
if ((own_window_type.get(*state) == TYPE_NORMAL) &&
!TEST_HINT(own_window_hints.get(*state), HINT_UNDECORATED)) {
/* allow conky to hold input focus. */
break;
}
}
break;
#ifdef BUILD_MOUSE_EVENTS
/*
windows below are notified for the following events as well;
can't forward the event without filtering XQueryTree output.
*/
case MotionNotify:
if (window.xi_opcode == 0) {
modifier_state_t mods = x11_modifier_state(ev.xmotion.state);
consumed = llua_mouse_hook(mouse_move_event(
ev.xmotion.x, ev.xmotion.y, ev.xmotion.x_root, ev.xmotion.y_root, mods
));
}
break;
case LeaveNotify:
case EnterNotify:
if (window.xi_opcode == 0) {
bool not_over_conky = ev.xcrossing.x_root <= window.x || ev.xcrossing.y_root <= window.y ||
ev.xcrossing.x_root >= window.x + window.width || ev.xcrossing.y_root >= window.y + window.height;
if ((not_over_conky && ev.xcrossing.type == LeaveNotify) ||
(!not_over_conky && ev.xcrossing.type == EnterNotify)) {
llua_mouse_hook(mouse_crossing_event(
ev.xcrossing.type == EnterNotify ? mouse_event_t::AREA_ENTER : mouse_event_t::AREA_LEAVE,
ev.xcrossing.x, ev.xcrossing.y, ev.xcrossing.x_root, ev.xcrossing.y_root
));
}
}
// can't propagate these events in a way that makes sense for desktop
continue;
#endif /* BUILD_MOUSE_EVENTS */
#endif /* OWN_WINDOW */
default:
#ifdef BUILD_XDAMAGE
if (ev.type == x11_stuff.event_base + XDamageNotify) {
auto *dev = reinterpret_cast<XDamageNotifyEvent *>(&ev);
XFixesSetRegion(display, x11_stuff.part, &dev->area, 1);
XFixesUnionRegion(display, x11_stuff.region2, x11_stuff.region2,
x11_stuff.part);
continue; // TODO: Propagate damage
}
#endif /* BUILD_XDAMAGE */
break;
}
if (!consumed) {
propagate_x11_event(ev);
} else {
InputEvent *i_ev = xev_as_input_event(ev);
if (i_ev != nullptr) {
XSetInputFocus(display, window.window, RevertToParent, i_ev->common.time);
}
}
}
#ifdef BUILD_XDAMAGE
if (x11_stuff.damage) {
XDamageSubtract(display, x11_stuff.damage, x11_stuff.region2, None);
XFixesSetRegion(display, x11_stuff.region2, nullptr, 0);
}
#endif /* BUILD_XDAMAGE */
/* XDBE doesn't seem to provide a way to clear the back buffer
* without interfering with the front buffer, other than passing
* XdbeBackground to XdbeSwapBuffers. That means that if we're
* using XDBE, we need to redraw the text even if it wasn't part of
* the exposed area. OTOH, if we're not going to call draw_stuff at
* all, then no swap happens and we can safely do nothing. */
if (XEmptyRegion(x11_stuff.region) == 0) {
#if defined(BUILD_XDBE)
if (use_xdbe.get(*state)) {
#else
if (use_xpmdb.get(*state)) {
#endif
XRectangle r;
int border_total = get_border_total();
r.x = text_start_x - border_total;
r.y = text_start_y - border_total;
r.width = text_width + 2 * border_total;
r.height = text_height + 2 * border_total;
XUnionRectWithRegion(&r, x11_stuff.region, x11_stuff.region);
}
XSetRegion(display, window.gc, x11_stuff.region);
#ifdef BUILD_XFT
if (use_xft.get(*state)) {
XftDrawSetClip(window.xftdraw, x11_stuff.region);
}
#endif
draw_stuff();
XDestroyRegion(x11_stuff.region);
x11_stuff.region = XCreateRegion();
}
// handled
return true;
}
void display_output_x11::sigterm_cleanup() {
XDestroyRegion(x11_stuff.region);
x11_stuff.region = nullptr;
#ifdef BUILD_XDAMAGE
if (x11_stuff.damage) {
XDamageDestroy(display, x11_stuff.damage);
XFixesDestroyRegion(display, x11_stuff.region2);
XFixesDestroyRegion(display, x11_stuff.part);
}
#endif /* BUILD_XDAMAGE */
}
void display_output_x11::cleanup() {
if (window_created == 1) {
int border_total = get_border_total();
XClearArea(display, window.window, text_start_x - border_total,
text_start_y - border_total, text_width + 2 * border_total,
text_height + 2 * border_total, 0);
}
destroy_window();
free_fonts(utf8_mode.get(*state));
if (x11_stuff.region != nullptr) {
XDestroyRegion(x11_stuff.region);
x11_stuff.region = nullptr;
}
#ifdef BUILD_XFT
FcFini();
#endif /* BUILD_XFT */
}
void display_output_x11::set_foreground_color(Colour c) {
current_color = c;
#ifdef BUILD_ARGB
if (have_argb_visual) {
current_color.alpha = own_window_argb_value.get(*state);
}
#endif /* BUILD_ARGB */
XSetForeground(display, window.gc,
current_color.to_x11_color(display, screen));
}
int display_output_x11::calc_text_width(const char *s) {
size_t slen = strlen(s);
#ifdef BUILD_XFT
if (use_xft.get(*state)) {
XGlyphInfo gi;
if (utf8_mode.get(*state)) {
XftTextExtentsUtf8(display, x_fonts[selected_font].xftfont,
reinterpret_cast<const FcChar8 *>(s), slen, &gi);
} else {
XftTextExtents8(display, x_fonts[selected_font].xftfont,
reinterpret_cast<const FcChar8 *>(s), slen, &gi);
}
return gi.xOff;
}
#endif /* BUILD_XFT */
return XTextWidth(x_fonts[selected_font].font, s, slen);
}
void display_output_x11::draw_string_at(int x, int y, const char *s, int w) {
#ifdef BUILD_XFT
if (use_xft.get(*state)) {
XColor c{};
XftColor c2{};
c.pixel = current_color.to_x11_color(display, screen);
// query color on custom colormap
XQueryColor(display, window.colourmap, &c);
c2.pixel = c.pixel;
c2.color.red = c.red;
c2.color.green = c.green;
c2.color.blue = c.blue;
c2.color.alpha = x_fonts[selected_font].font_alpha;
if (utf8_mode.get(*state)) {
XftDrawStringUtf8(window.xftdraw, &c2, x_fonts[selected_font].xftfont, x,
y, reinterpret_cast<const XftChar8 *>(s), w);
} else {
XftDrawString8(window.xftdraw, &c2, x_fonts[selected_font].xftfont, x, y,
reinterpret_cast<const XftChar8 *>(s), w);
}
} else
#endif
{
if (utf8_mode.get(*state)) {
Xutf8DrawString(display, window.drawable, x_fonts[selected_font].fontset,
window.gc, x, y, s, w);
} else {
XDrawString(display, window.drawable, window.gc, x, y, s, w);
}
}
}
void display_output_x11::set_line_style(int w, bool solid) {
XSetLineAttributes(display, window.gc, w, solid ? LineSolid : LineOnOffDash,
CapButt, JoinMiter);
}
void display_output_x11::set_dashes(char *s) {
XSetDashes(display, window.gc, 0, s, 2);
}
void display_output_x11::draw_line(int x1, int y1, int x2, int y2) {
XDrawLine(display, window.drawable, window.gc, x1, y1, x2, y2);
}
void display_output_x11::draw_rect(int x, int y, int w, int h) {
XDrawRectangle(display, window.drawable, window.gc, x, y, w, h);
}
void display_output_x11::fill_rect(int x, int y, int w, int h) {
XFillRectangle(display, window.drawable, window.gc, x, y, w, h);
}
void display_output_x11::draw_arc(int x, int y, int w, int h, int a1, int a2) {
XDrawArc(display, window.drawable, window.gc, x, y, w, h, a1, a2);
}
void display_output_x11::move_win(int x, int y) {
window.x = x;
window.y = y;
XMoveWindow(display, window.window, x, y);
}
int display_output_x11::dpi_scale(int value) {
#if defined(BUILD_XFT)
if (use_xft.get(*state) && xft_dpi > 0) {
return (value * xft_dpi + (value > 0 ? 48 : -48)) / 96;
} else {
return value;
}
#else /* defined(BUILD_XFT) */
return value;
#endif /* defined(BUILD_XFT) */
}
void display_output_x11::end_draw_stuff() {
#if defined(BUILD_XDBE)
xdbe_swap_buffers();
#else
xpmdb_swap_buffers();
#endif
}
void display_output_x11::clear_text(int exposures) {
#ifdef BUILD_XDBE
if (use_xdbe.get(*state)) {
/* The swap action is XdbeBackground, which clears */
return;
}
#else
if (use_xpmdb.get(*state)) {
return;
} else
#endif
if ((display != nullptr) &&
(window.window != 0u)) { // make sure these are !null
/* there is some extra space for borders and outlines */
int border_total = get_border_total();
XClearArea(display, window.window, text_start_x - border_total,
text_start_y - border_total, text_width + 2 * border_total,
text_height + 2 * border_total, exposures != 0 ? True : 0);
}
}
#ifdef BUILD_XFT
int display_output_x11::font_height(unsigned int f) {
assert(f < x_fonts.size());
if (use_xft.get(*state)) {
return x_fonts[f].xftfont->ascent + x_fonts[f].xftfont->descent;
} else {
return x_fonts[f].font->max_bounds.ascent +
x_fonts[f].font->max_bounds.descent;
}
}
int display_output_x11::font_ascent(unsigned int f) {
assert(f < x_fonts.size());
if (use_xft.get(*state)) {
return x_fonts[f].xftfont->ascent;
} else {
return x_fonts[f].font->max_bounds.ascent;
}
}
int display_output_x11::font_descent(unsigned int f) {
assert(f < x_fonts.size());
if (use_xft.get(*state)) {
return x_fonts[f].xftfont->descent;
} else {
return x_fonts[f].font->max_bounds.descent;
}
}
#else
int display_output_x11::font_height(unsigned int f) {
assert(f < x_fonts.size());
return x_fonts[f].font->max_bounds.ascent +
x_fonts[f].font->max_bounds.descent;
}
int display_output_x11::font_ascent(unsigned int f) {
assert(f < x_fonts.size());
return x_fonts[f].font->max_bounds.ascent;
}
int display_output_x11::font_descent(unsigned int f) {
assert(f < x_fonts.size());
return x_fonts[f].font->max_bounds.descent;
}
#endif
void display_output_x11::setup_fonts(void) {
#ifdef BUILD_XFT
if (use_xft.get(*state)) {
if (window.xftdraw != nullptr) {
XftDrawDestroy(window.xftdraw);
window.xftdraw = nullptr;
}
window.xftdraw = XftDrawCreate(display, window.drawable, window.visual,
window.colourmap);
}
#endif /* BUILD_XFT */
}
void display_output_x11::set_font(unsigned int f) {
if (f >= x_fonts.size()) {
DBGP("%d >= x_fonts.size()", f);
return;
}
#ifdef BUILD_XFT
if (use_xft.get(*state)) { return; }
#endif /* BUILD_XFT */
if (x_fonts.size() > f && x_fonts[f].font != nullptr &&
window.gc != nullptr) {
XSetFont(display, window.gc, x_fonts[f].font->fid);
}
}
void display_output_x11::free_fonts(bool utf8) {
for (auto &font : x_fonts) {
#ifdef BUILD_XFT
if (use_xft.get(*state)) {
/* Close each font if it has been initialized */
if (font.xftfont) { XftFontClose(display, font.xftfont); }
} else
#endif /* BUILD_XFT */
{
if (font.font != nullptr) { XFreeFont(display, font.font); }
if (utf8 && (font.fontset != nullptr)) {
XFreeFontSet(display, font.fontset);
}
}
}
x_fonts.clear();
#ifdef BUILD_XFT
if (window.xftdraw != nullptr) {
XftDrawDestroy(window.xftdraw);
window.xftdraw = nullptr;
}
#endif /* BUILD_XFT */
}
void display_output_x11::load_fonts(bool utf8) {
x_fonts.resize(fonts.size());
for (unsigned int i = 0; i < fonts.size(); i++) {
auto &font = fonts[i];
auto &xfont = x_fonts[i];
#ifdef BUILD_XFT
/* load Xft font */
if (use_xft.get(*state)) {
if (xfont.xftfont == nullptr) {
xfont.xftfont = XftFontOpenName(display, screen, font.name.c_str());
}
if (xfont.xftfont != nullptr) { continue; }
NORM_ERR("can't load Xft font '%s'", font.name.c_str());
if ((xfont.xftfont = XftFontOpenName(display, screen, "courier-12")) !=
nullptr) {
continue;
}
CRIT_ERR("can't load Xft font '%s'", "courier-12");
continue;
}
#endif
if (utf8 && xfont.fontset == nullptr) {
char **missing;
int missingnum;
char *missingdrawn;
xfont.fontset = XCreateFontSet(display, font.name.c_str(), &missing,
&missingnum, &missingdrawn);
XFreeStringList(missing);
if (xfont.fontset == nullptr) {
NORM_ERR("can't load font '%s'", font.name.c_str());
xfont.fontset = XCreateFontSet(display, "fixed", &missing, &missingnum,
&missingdrawn);
if (xfont.fontset == nullptr) {
CRIT_ERR("can't load font '%s'", "fixed");
}
}
}
/* load normal font */
if ((xfont.font == nullptr) &&
(xfont.font = XLoadQueryFont(display, font.name.c_str())) == nullptr) {
NORM_ERR("can't load font '%s'", font.name.c_str());
if ((xfont.font = XLoadQueryFont(display, "fixed")) == nullptr) {
CRIT_ERR("can't load font '%s'", "fixed");
}
}
}
}
#endif /* BUILD_X11 */
} // namespace conky
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