waybar/src/bar.cpp

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#include "bar.hpp"
#include "client.hpp"
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#include "factory.hpp"
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#include "util/json.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 zxdg_output_v1_listener xdgOutputListener = {
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.logical_position = handleLogicalPosition,
.logical_size = handleLogicalSize,
.done = handleDone,
.name = handleName,
.description = handleDescription,
};
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xdg_output_ =
zxdg_output_manager_v1_get_xdg_output(client.xdg_output_manager, *output);
zxdg_output_v1_add_listener(xdg_output_, &xdgOutputListener, this);
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window.set_title("waybar");
window.set_decorated(false);
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setupConfig();
setupCss();
setupWidgets();
if (config_["height"]) {
height_ = config_["height"].asUInt();
}
Gtk::Widget& wrap(window);
gtk_widget_realize(wrap.gobj());
GdkWindow *gdk_window = gtk_widget_get_window(wrap.gobj());
gdk_wayland_window_set_use_custom_surface(gdk_window);
surface = gdk_wayland_window_get_wl_surface(gdk_window);
std::size_t layer_top = config_["layer"] == "top"
? ZWLR_LAYER_SHELL_V1_LAYER_TOP : ZWLR_LAYER_SHELL_V1_LAYER_BOTTOM;
layer_surface = zwlr_layer_shell_v1_get_layer_surface(
client.layer_shell, surface, *output, layer_top, "waybar");
std::size_t position_bottom = config_["position"] == "bottom"
? ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM : ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP;
zwlr_layer_surface_v1_set_anchor(layer_surface, position_bottom
| ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT | ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT);
zwlr_layer_surface_v1_set_size(layer_surface, width_, height_);
static const struct zwlr_layer_surface_v1_listener layer_surface_listener = {
.configure = layerSurfaceHandleConfigure,
.closed = layerSurfaceHandleClosed,
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};
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zwlr_layer_surface_v1_add_listener(layer_surface,
&layer_surface_listener, this);
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wl_surface_commit(surface);
}
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void waybar::Bar::handleLogicalPosition(void* /*data*/,
struct zxdg_output_v1* /*zxdg_output_v1*/, int32_t /*x*/, int32_t /*y*/)
{
// Nothing here
}
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void waybar::Bar::handleLogicalSize(void* /*data*/,
struct zxdg_output_v1* /*zxdg_output_v1*/, int32_t /*width*/,
int32_t /*height*/)
{
// Nothing here
}
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void waybar::Bar::handleDone(void* /*data*/,
struct zxdg_output_v1* /*zxdg_output_v1*/)
{
// Nothing here
}
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void waybar::Bar::handleName(void* data, struct zxdg_output_v1* /*xdg_output*/,
const char* name)
{
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auto o = static_cast<waybar::Bar *>(data);
o->outputName = name;
}
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void waybar::Bar::handleDescription(void* /*data*/,
struct zxdg_output_v1* /*zxdg_output_v1*/, const char* /*description*/)
{
// Nothing here
}
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void waybar::Bar::layerSurfaceHandleConfigure(void* data,
struct zwlr_layer_surface_v1* surface, uint32_t serial, uint32_t width,
uint32_t height)
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{
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auto o = static_cast<waybar::Bar *>(data);
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o->window.show_all();
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o->setWidth(o->config_["width"] ? o->config_["width"].asUInt() : width);
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zwlr_layer_surface_v1_ack_configure(surface, serial);
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if (o->height_ != height) {
height = o->height_;
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std::cout << fmt::format("New Height: {}", height) << std::endl;
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zwlr_layer_surface_v1_set_size(surface, o->width_, height);
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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,
struct zwlr_layer_surface_v1* /*surface*/)
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{
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auto o = static_cast<waybar::Bar *>(data);
zwlr_layer_surface_v1_destroy(o->layer_surface);
o->layer_surface = 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 == width_) {
return;
}
std::cout << fmt::format("Bar width configured: {}", width) << std::endl;
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width_ = width;
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window.set_size_request(width);
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window.resize(width, height_);
zwlr_layer_surface_v1_set_size(layer_surface, width, height_ + 1);
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wl_surface_commit(surface);
}
auto waybar::Bar::toggle() -> void
{
visible = !visible;
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auto zone = visible ? height_ : 0;
zwlr_layer_surface_v1_set_exclusive_zone(layer_surface, zone);
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wl_surface_commit(surface);
}
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auto waybar::Bar::setupConfig() -> void
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{
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util::JsonParser parser;
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std::ifstream file(client.config_file);
if (!file.is_open()) {
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throw std::runtime_error("Can't open config file");
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}
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std::string str((std::istreambuf_iterator<char>(file)),
std::istreambuf_iterator<char>());
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config_ = parser.parse(str);
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}
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auto waybar::Bar::setupCss() -> void
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{
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css_provider_ = Gtk::CssProvider::create();
style_context_ = Gtk::StyleContext::create();
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// load our css file, wherever that may be hiding
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if (css_provider_->load_from_path(client.css_file)) {
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Glib::RefPtr<Gdk::Screen> screen = window.get_screen();
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style_context_->add_provider_for_screen(screen, css_provider_,
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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 (const auto &name : config_["modules-left"]) {
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auto module = factory.makeModule(name.asString());
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if (module != nullptr) {
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left.pack_start(*module, false, true, 0);
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}
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}
}
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if (config_["modules-center"]) {
for (const auto &name : config_["modules-center"]) {
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auto module = factory.makeModule(name.asString());
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if (module != nullptr) {
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center.pack_start(*module, true, false, 10);
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}
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}
}
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if (config_["modules-right"]) {
std::reverse(config_["modules-right"].begin(), config_["modules-right"].end());
for (const auto &name : config_["modules-right"]) {
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auto module = factory.makeModule(name.asString());
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if (module != nullptr) {
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right.pack_end(*module, false, false, 0);
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}
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}
}
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}