mirror of https://github.com/polybar/polybar.git
94 lines
2.0 KiB
C++
94 lines
2.0 KiB
C++
#include <X11/Xlib.h>
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#include <cstring>
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#include <utility>
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#include "utils/factory.hpp"
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#include "x11/connection.hpp"
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#include "x11/xresources.hpp"
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POLYBAR_NS
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/**
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* Create instance
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*/
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xresource_manager::make_type xresource_manager::make() {
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return static_cast<xresource_manager::make_type>(
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*factory_util::singleton<std::remove_reference_t<xresource_manager::make_type>>(connection::make()));
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}
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/**
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* Construct manager instance
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*/
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xresource_manager::xresource_manager(Display* dsp) : m_display(forward<decltype(dsp)>(dsp)) {
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XrmInitialize();
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if ((m_manager = XResourceManagerString(m_display)) != nullptr) {
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m_db = XrmGetStringDatabase(m_manager);
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}
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}
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/**
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* Deconstruct instance
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*/
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xresource_manager::~xresource_manager() {
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if (m_manager != nullptr) {
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XFree(m_manager);
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}
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if (m_db != nullptr) {
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XrmDestroyDatabase(m_db);
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}
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}
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/**
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* Get string value from the X resource db
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*/
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string xresource_manager::get_string(string name, string fallback) const {
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auto result = load_value(move(name), "String", 64);
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if (result.empty()) {
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return fallback;
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}
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return result;
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}
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/**
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* Get float value from the X resource db
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*/
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float xresource_manager::get_float(string name, float fallback) const {
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auto result = load_value(move(name), "String", 64);
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if (result.empty()) {
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return fallback;
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}
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return strtof(result.c_str(), nullptr);
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}
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/**
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* Get integer value from the X resource db
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*/
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int xresource_manager::get_int(string name, int fallback) const {
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auto result = load_value(move(name), "String", 64);
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if (result.empty()) {
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return fallback;
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}
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return atoi(result.c_str());
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}
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/**
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* Query the database for given key
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*/
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string xresource_manager::load_value(const string& key, const string& res_type, size_t n) const {
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if (m_manager == nullptr) {
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return "";
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}
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char* type = nullptr;
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XrmValue ret{};
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XrmGetResource(m_db, key.c_str(), res_type.c_str(), &type, &ret);
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if (ret.addr != nullptr && !std::strncmp(res_type.c_str(), type, n)) {
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return {ret.addr};
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}
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return "";
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}
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POLYBAR_NS_END
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