mirror of
https://repo.dec05eba.com/gpu-screen-recorder-ui
synced 2026-03-31 09:17:04 +09:00
Added KWin workaround to get current window title
This commit is contained in:
Andrew
dec05eba
58
tools/gsr-kwin-helper/gsrkwinhelper.js
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58
tools/gsr-kwin-helper/gsrkwinhelper.js
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const DAEMON_DBUS_NAME = "com.dec05eba.gsr_kwin_helper";
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// utils
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function sendNewActiveWindowTitle(title) {
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callDBus(
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DAEMON_DBUS_NAME, "/", DAEMON_DBUS_NAME,
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"setActiveWindowTitle", title
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);
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}
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function sendNewActiveWindowFullscreen(isFullscreen) {
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callDBus(
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DAEMON_DBUS_NAME, "/", DAEMON_DBUS_NAME,
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"setActiveWindowFullscreen", isFullscreen
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);
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}
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// track handlers to avoid duplicates
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const windowEventHandlers = new Map();
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function subscribeToClient(client) {
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if (!client || windowEventHandlers.has(client)) return;
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const emitActiveTitle = () => {
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if (workspace.activeWindow === client) {
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sendNewActiveWindowTitle(client.caption || "");
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}
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};
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const emitActiveFullscreen = () => {
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if (workspace.activeWindow === client) {
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sendNewActiveWindowFullscreen(client.fullScreen);
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}
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};
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windowEventHandlers.set(client, {
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title: emitActiveTitle,
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fs: emitActiveFullscreen,
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});
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client.captionChanged.connect(emitActiveTitle);
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client.fullScreenChanged.connect(emitActiveFullscreen);
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}
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function updateActiveWindow(client) {
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if (!client) return;
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sendNewActiveWindowTitle(client.caption || "");
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sendNewActiveWindowFullscreen(client.fullScreen);
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subscribeToClient(client);
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}
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// handle window focus changes
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workspace.windowActivated.connect(updateActiveWindow);
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// handle initial state
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if (workspace.activeWindow) {
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updateActiveWindow(workspace.activeWindow);
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}
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225
tools/gsr-kwin-helper/main.cpp
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225
tools/gsr-kwin-helper/main.cpp
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@@ -0,0 +1,225 @@
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#include "dbus/dbus.h"
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#include <iostream>
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#include <string>
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#include <cstring>
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const char* INTROSPECTION_XML =
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"<!DOCTYPE node PUBLIC \"-//freedesktop//DTD D-BUS Object Introspection 1.0//EN\"\n"
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"\"http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd\">\n"
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"<node>\n"
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" <interface name='com.dec05eba.gsr_kwin_helper'>\n"
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" <method name='setActiveWindowTitle'>\n"
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" <arg type='s' name='title' direction='in'/>\n"
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" </method>\n"
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" </interface>\n"
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" <interface name='org.freedesktop.DBus.Introspectable'>\n"
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" <method name='Introspect'>\n"
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" <arg type='s' name='data' direction='out'/>\n"
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" </method>\n"
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" </interface>\n"
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"</node>\n";
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class GsrKwinHelper {
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public:
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std::string active_window_title;
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DBusConnection* connection = nullptr;
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DBusError err;
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bool init() {
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dbus_error_init(&err);
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connection = dbus_bus_get(DBUS_BUS_SESSION, &err);
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if (dbus_error_is_set(&err)) {
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std::cerr << "Failed to connect to session bus: " << err.message << "\n";
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dbus_error_free(&err);
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return false;
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}
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if (!connection) {
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std::cerr << "Connection is null\n";
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return false;
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}
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int ret = dbus_bus_request_name(connection, "com.dec05eba.gsr_kwin_helper",
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DBUS_NAME_FLAG_REPLACE_EXISTING, &err);
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if (dbus_error_is_set(&err)) {
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std::cerr << "Failed to request name: " << err.message << "\n";
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dbus_error_free(&err);
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return false;
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}
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if (ret != DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER) {
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std::cerr << "Not primary owner of the name\n";
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return false;
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}
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std::cout << "DBus server initialized on com.dec05eba.gsr_kwin_helper\n";
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if (!load_kwin_script(connection, KWIN_HELPER_SCRIPT_PATH)) {
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std::cerr << "Warning: Failed to load KWin script\n";
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}
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return true;
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}
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void run() {
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while (true) {
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dbus_connection_read_write(connection, 100);
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DBusMessage* msg = dbus_connection_pop_message(connection);
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if (!msg) {
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continue;
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}
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if (dbus_message_is_method_call(msg, "org.freedesktop.DBus.Introspectable", "Introspect")) {
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handle_introspect(msg);
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} else if (dbus_message_is_method_call(msg, "com.dec05eba.gsr_kwin_helper", "setActiveWindowTitle")) {
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handle_set_title(msg);
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}
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dbus_message_unref(msg);
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}
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}
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void handle_introspect(DBusMessage* msg) {
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DBusMessage* reply = dbus_message_new_method_return(msg);
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if (!reply) return;
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DBusMessageIter args;
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dbus_message_iter_init_append(reply, &args);
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if (!dbus_message_iter_append_basic(&args, DBUS_TYPE_STRING, &INTROSPECTION_XML)) {
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dbus_message_unref(reply);
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return;
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}
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dbus_connection_send(connection, reply, nullptr);
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dbus_connection_flush(connection);
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dbus_message_unref(reply);
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}
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void handle_set_title(DBusMessage* msg) {
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DBusMessageIter args;
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const char* title = nullptr;
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if (!dbus_message_iter_init(msg, &args)) {
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send_error_reply(msg, "No arguments provided");
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return;
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}
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if (dbus_message_iter_get_arg_type(&args) != DBUS_TYPE_STRING) {
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send_error_reply(msg, "Expected string argument");
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return;
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}
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dbus_message_iter_get_basic(&args, &title);
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if (title) {
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active_window_title = title;
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std::cout << "Active window title set to: " << active_window_title << "\n";
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std::cout.flush();
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send_success_reply(msg);
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} else {
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send_error_reply(msg, "Failed to read string");
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}
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}
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void send_success_reply(DBusMessage* msg) {
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DBusMessage* reply = dbus_message_new_method_return(msg);
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if (reply) {
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dbus_connection_send(connection, reply, nullptr);
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dbus_connection_flush(connection);
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dbus_message_unref(reply);
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}
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}
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void send_error_reply(DBusMessage* msg, const char* error_msg) {
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DBusMessage* reply = dbus_message_new_error(msg, "com.dec05eba.gsr_kwin_helper.Error", error_msg);
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if (reply) {
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dbus_connection_send(connection, reply, nullptr);
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dbus_connection_flush(connection);
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dbus_message_unref(reply);
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}
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}
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bool call_kwin_method(DBusConnection* conn, const char* method,
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const char* arg1 = nullptr, const char* arg2 = nullptr) {
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DBusMessage* msg = dbus_message_new_method_call(
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"org.kde.KWin",
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"/Scripting",
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"org.kde.kwin.Scripting",
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method
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);
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if (!msg) {
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std::cerr << "Failed to create message for " << method << "\n";
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return false;
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}
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if (arg1) {
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dbus_message_append_args(msg, DBUS_TYPE_STRING, &arg1, DBUS_TYPE_INVALID);
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if (arg2) {
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dbus_message_append_args(msg, DBUS_TYPE_STRING, &arg2, DBUS_TYPE_INVALID);
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}
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}
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DBusError err;
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dbus_error_init(&err);
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// Send message and wait for reply (with 1 second timeout)
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DBusMessage* reply = dbus_connection_send_with_reply_and_block(conn, msg, 1000, &err);
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dbus_message_unref(msg);
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if (dbus_error_is_set(&err)) {
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std::cerr << "Error calling " << method << ": " << err.message << "\n";
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dbus_error_free(&err);
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return false;
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}
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if (reply) {
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dbus_message_unref(reply);
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}
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return true;
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}
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bool load_kwin_script(DBusConnection* conn, const char* script_path) {
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// Unload existing script
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call_kwin_method(conn, "unloadScript", "gsrkwinhelper");
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if (!call_kwin_method(conn, "loadScript", script_path, "gsrkwinhelper")) {
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std::cerr << "Failed to load KWin script\n";
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return false;
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}
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if (!call_kwin_method(conn, "start")) {
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std::cerr << "Failed to start KWin script\n";
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return false;
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}
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std::cout << "KWin script loaded and started successfully\n";
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return true;
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}
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~GsrKwinHelper() {
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if (connection) {
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dbus_bus_release_name(connection, "com.dec05eba.gsr_kwin_helper", nullptr);
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dbus_connection_unref(connection);
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}
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}
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};
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int main(int argc, char** argv) {
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GsrKwinHelper helper;
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if (!helper.init()) {
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return 1;
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}
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std::cout << "Server running. Helper script path: " << KWIN_HELPER_SCRIPT_PATH << "\n";
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helper.run();
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return 0;
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}
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