94 lines
2.2 KiB
C++
94 lines
2.2 KiB
C++
#pragma once
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#include <bitset>
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#include "components/config.hpp"
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#include "modules/meta/static_module.hpp"
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#include "x11/events.hpp"
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#include "x11/ewmh.hpp"
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#include "x11/icccm.hpp"
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#include "x11/window.hpp"
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POLYBAR_NS
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class connection;
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namespace modules {
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/**
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* Wrapper used to update the event mask of the
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* currently active to enable title tracking
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*/
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class active_window {
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public:
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explicit active_window(xcb_window_t win)
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: m_connection(configure_connection().create<decltype(m_connection)>()), m_window(m_connection, win) {
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try {
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m_window.change_event_mask(XCB_EVENT_MASK_PROPERTY_CHANGE);
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} catch (const xpp::x::error::window& err) {
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}
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}
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~active_window() {
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try {
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m_window.change_event_mask(XCB_EVENT_MASK_NO_EVENT);
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} catch (const xpp::x::error::window& err) {
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}
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}
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/**
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* Check if current window matches passed value
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*/
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bool match(const xcb_window_t win) const {
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return m_window == win;
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}
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/**
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* Get the title by returning the first non-empty value of:
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* _NET_WM_VISIBLE_NAME
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* _NET_WM_NAME
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*/
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string title(xcb_ewmh_connection_t* ewmh) {
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string title;
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if (!(title = ewmh_util::get_visible_name(ewmh, m_window)).empty()) {
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return title;
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} else if (!(title = ewmh_util::get_wm_name(ewmh, m_window)).empty()) {
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return title;
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} else if (!(title = icccm_util::get_wm_name(m_connection, m_window)).empty()) {
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return title;
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} else {
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return "";
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}
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}
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private:
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connection& m_connection;
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window m_window{m_connection};
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};
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/**
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* Module used to display information about the
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* currently active X window.
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*/
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class xwindow_module : public static_module<xwindow_module>, public xpp::event::sink<evt::property_notify> {
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public:
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using static_module::static_module;
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void setup();
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void teardown();
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void handle(const evt::property_notify& evt);
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void update();
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string get_output();
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bool build(builder* builder, const string& tag) const;
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private:
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static constexpr const char* TAG_LABEL{"<label>"};
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ewmh_connection_t m_ewmh;
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unique_ptr<active_window> m_active;
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label_t m_label;
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};
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}
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POLYBAR_NS_END
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