Waybar/src/bar.cpp

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#include <condition_variable>
#include <gdk/gdkwayland.h>
#include <thread>
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#include <fstream>
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#include "bar.hpp"
#include "client.hpp"
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#include "factory.hpp"
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waybar::Bar::Bar(Client &client, std::unique_ptr<struct wl_output *> &&p_output)
: client(client), window{Gtk::WindowType::WINDOW_TOPLEVEL},
output(std::move(p_output))
{
static const struct wl_output_listener outputListener = {
.geometry = _handleGeometry,
.mode = _handleMode,
.done = _handleDone,
.scale = _handleScale,
};
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wl_output_add_listener(*output, &outputListener, this);
window.set_title("waybar");
window.set_decorated(false);
_setupConfig();
_setupCss();
_setupWidgets();
if (_config["height"])
_height = _config["height"].asUInt();
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bool positionBottom = _config["position"] == "bottom";
bool layerTop = _config["layer"] == "top";
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gtk_widget_realize(GTK_WIDGET(window.gobj()));
GdkWindow *gdkWindow = gtk_widget_get_window(GTK_WIDGET(window.gobj()));
gdk_wayland_window_set_use_custom_surface(gdkWindow);
surface = gdk_wayland_window_get_wl_surface(gdkWindow);
layerSurface = zwlr_layer_shell_v1_get_layer_surface(
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client.layer_shell, surface, *output,
(layerTop ? ZWLR_LAYER_SHELL_V1_LAYER_TOP : ZWLR_LAYER_SHELL_V1_LAYER_BOTTOM),
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"waybar");
zwlr_layer_surface_v1_set_anchor(layerSurface,
ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT | ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT |
(positionBottom ? ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM : ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP));
zwlr_layer_surface_v1_set_size(layerSurface, _width, _height);
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static const struct zwlr_layer_surface_v1_listener layerSurfaceListener = {
.configure = _layerSurfaceHandleConfigure,
.closed = _layerSurfaceHandleClosed,
};
zwlr_layer_surface_v1_add_listener(layerSurface, &layerSurfaceListener,
this);
wl_surface_commit(surface);
}
void waybar::Bar::_handleGeometry(void *data, struct wl_output *wl_output,
int32_t x, int32_t y, int32_t physical_width, int32_t physical_height,
int32_t subpixel, const char *make, const char *model, int32_t transform)
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{
// Nothing here
}
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void waybar::Bar::_handleMode(void *data, struct wl_output *wl_output,
uint32_t f, int32_t w, int32_t h, int32_t refresh)
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{
auto o = reinterpret_cast<waybar::Bar *>(data);
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o->setWidth(w);
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}
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void waybar::Bar::_handleDone(void *data, struct wl_output *)
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{
// Nothing here
}
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void waybar::Bar::_handleScale(void *data, struct wl_output *wl_output,
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int32_t factor)
{
// Nothing here
}
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void waybar::Bar::_layerSurfaceHandleConfigure(
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void *data, struct zwlr_layer_surface_v1 *surface, uint32_t serial,
uint32_t width, uint32_t height)
{
auto o = reinterpret_cast<waybar::Bar *>(data);
o->window.show_all();
zwlr_layer_surface_v1_ack_configure(surface, serial);
if (o->_height != height)
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{
height = o->_height;
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std::cout << fmt::format("New Height: {}", height) << std::endl;
zwlr_layer_surface_v1_set_size(surface, width, height);
zwlr_layer_surface_v1_set_exclusive_zone(surface, o->visible ? height : 0);
wl_surface_commit(o->surface);
}
}
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void waybar::Bar::_layerSurfaceHandleClosed(void *data,
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struct zwlr_layer_surface_v1 *surface)
{
auto o = reinterpret_cast<waybar::Bar *>(data);
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zwlr_layer_surface_v1_destroy(o->layerSurface);
o->layerSurface = nullptr;
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wl_surface_destroy(o->surface);
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o->surface = nullptr;
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o->window.close();
}
auto waybar::Bar::setWidth(uint32_t width) -> void
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{
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if (width == this->_width) return;
std::cout << fmt::format("Bar width configured: {}", width) << std::endl;
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this->_width = width;
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window.set_size_request(width);
window.resize(width, _height);
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zwlr_layer_surface_v1_set_size(layerSurface, width, 40);
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wl_surface_commit(surface);
}
auto waybar::Bar::toggle() -> void
{
visible = !visible;
auto zone = visible ? _height : 0;
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zwlr_layer_surface_v1_set_exclusive_zone(layerSurface, zone);
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wl_surface_commit(surface);
}
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auto waybar::Bar::_setupConfig() -> void
{
Json::Value root;
Json::CharReaderBuilder builder;
Json::CharReader* reader = builder.newCharReader();
std::string err;
std::ifstream file(client.configFile);
if (!file.is_open())
throw std::runtime_error("Can't open config file");
std::string str((std::istreambuf_iterator<char>(file)),
std::istreambuf_iterator<char>());
bool res = reader->parse(str.c_str(), str.c_str() + str.size(), &_config, &err);
delete reader;
if (!res)
throw std::runtime_error(err);
}
auto waybar::Bar::_setupCss() -> void
{
_cssProvider = Gtk::CssProvider::create();
_styleContext = Gtk::StyleContext::create();
// load our css file, wherever that may be hiding
if (_cssProvider->load_from_path(client.cssFile)) {
Glib::RefPtr<Gdk::Screen> screen = window.get_screen();
_styleContext->add_provider_for_screen(screen, _cssProvider,
GTK_STYLE_PROVIDER_PRIORITY_USER);
}
}
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auto waybar::Bar::_setupWidgets() -> void
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{
auto &left = *Gtk::manage(new Gtk::Box(Gtk::ORIENTATION_HORIZONTAL, 0));
auto &center = *Gtk::manage(new Gtk::Box(Gtk::ORIENTATION_HORIZONTAL, 0));
auto &right = *Gtk::manage(new Gtk::Box(Gtk::ORIENTATION_HORIZONTAL, 0));
auto &box1 = *Gtk::manage(new Gtk::Box(Gtk::ORIENTATION_HORIZONTAL, 0));
window.add(box1);
box1.set_homogeneous(true);
box1.pack_start(left, true, true);
box1.pack_start(center, false, false);
box1.pack_end(right, true, true);
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Factory factory(*this, _config);
if (_config["modules-left"]) {
for (auto name : _config["modules-left"]) {
auto &module = factory.makeModule(name.asString());
left.pack_start(module, false, true, 0);
}
}
if (_config["modules-center"]) {
for (auto name : _config["modules-center"]) {
auto &module = factory.makeModule(name.asString());
center.pack_start(module, true, false, 10);
}
}
if (_config["modules-right"]) {
std::reverse(_config["modules-right"].begin(), _config["modules-right"].end());
for (auto name : _config["modules-right"]) {
auto &module = factory.makeModule(name.asString());
right.pack_end(module, false, false, 0);
}
}
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}