Waybar/src/client.cpp

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#include "client.hpp"
waybar::Client::Client(int argc, char* argv[])
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: gtk_app(Gtk::Application::create(argc, argv, "fr.arouillard.waybar")),
gdk_display(Gdk::Display::get_default())
{
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if (!gdk_display) {
throw std::runtime_error("Can't find display");
}
if (!GDK_IS_WAYLAND_DISPLAY(gdk_display->gobj())) {
throw std::runtime_error("Bar need to run under Wayland");
}
wl_display = gdk_wayland_display_get_wl_display(gdk_display->gobj());
auto getFirstValidPath = [] (std::vector<std::string> possiblePaths) {
wordexp_t p;
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for (const std::string &path: possiblePaths) {
if (wordexp(path.c_str(), &p, 0) == 0) {
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if (access(*p.we_wordv, F_OK) == 0) {
std::string result = *p.we_wordv;
wordfree(&p);
return result;
}
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wordfree(&p);
}
}
return std::string();
};
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config_file = getFirstValidPath({
"$XDG_CONFIG_HOME/waybar/config",
"$HOME/waybar/config",
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"/etc/xdg/waybar/config",
"./resources/config",
});
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css_file = getFirstValidPath({
"$XDG_CONFIG_HOME/waybar/style.css",
"$HOME/waybar/style.css",
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"/etc/xdg/waybar/style.css",
"./resources/style.css",
});
}
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void waybar::Client::handleGlobal(void *data, struct wl_registry *registry,
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uint32_t name, const char *interface, uint32_t version)
{
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auto o = static_cast<waybar::Client *>(data);
if (strcmp(interface, zwlr_layer_shell_v1_interface.name) == 0) {
o->layer_shell = static_cast<struct zwlr_layer_shell_v1 *>(
wl_registry_bind(registry, name, &zwlr_layer_shell_v1_interface, version));
} else if (strcmp(interface, wl_output_interface.name) == 0) {
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auto output = std::make_unique<struct wl_output *>();
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*output = static_cast<struct wl_output *>(wl_registry_bind(registry, name,
&wl_output_interface, version));
if (o->xdg_output_manager != nullptr) {
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o->bars.emplace_back(std::make_unique<Bar>(*o, std::move(output), name));
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}
} else if (strcmp(interface, wl_seat_interface.name) == 0) {
o->seat = static_cast<struct wl_seat *>(wl_registry_bind(registry, name,
&wl_seat_interface, version));
} else if (strcmp(interface, zxdg_output_manager_v1_interface.name) == 0
&& version >= ZXDG_OUTPUT_V1_NAME_SINCE_VERSION) {
o->xdg_output_manager = static_cast<struct zxdg_output_manager_v1 *>(
wl_registry_bind(registry, name,
&zxdg_output_manager_v1_interface, ZXDG_OUTPUT_V1_NAME_SINCE_VERSION));
}
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}
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void waybar::Client::handleGlobalRemove(void* data,
struct wl_registry* /*registry*/, uint32_t name)
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{
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auto o = static_cast<waybar::Client *>(data);
for (auto it = o->bars.begin(); it != o->bars.end(); ++it) {
if ((**it).wl_name == name) {
o->bars.erase(it);
break;
}
}
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}
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void waybar::Client::bindInterfaces()
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{
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registry = wl_display_get_registry(wl_display);
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static const struct wl_registry_listener registry_listener = {
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.global = handleGlobal,
.global_remove = handleGlobalRemove,
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};
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wl_registry_add_listener(registry, &registry_listener, this);
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wl_display_roundtrip(wl_display);
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}
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int waybar::Client::main(int /*argc*/, char* /*argv*/[])
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{
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bindInterfaces();
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gtk_app->hold();
gtk_app->run();
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bars.clear();
zxdg_output_manager_v1_destroy(xdg_output_manager);
zwlr_layer_shell_v1_destroy(layer_shell);
wl_registry_destroy(registry);
wl_seat_destroy(seat);
wl_display_disconnect(wl_display);
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return 0;
}