File indexing completed on 2025-04-20 04:02:14

 /*
  * SPDX-FileCopyrightText: 2021 Arjen Hiemstra <ahiemstra@heimr.nl>
  *
  * SPDX-License-Identifier: LGPL-2.1-or-later
  */
 
 #include "displaycolorspace.h"
 
 #ifdef HAVE_X11
 #include "private/qtx11extras_p.h"
 #include <QGuiApplication>
 #include <xcb/xcb.h>
 #include <xcb/xcb_atom.h>
 #endif
 
 DisplayColorSpace::DisplayColorSpace(QObject *parent)
     : QObject(parent)
 {
     m_colorSpace = QColorSpace{QColorSpace::SRgb};
     update();
 }
 
 QColorSpace DisplayColorSpace::colorSpace() const
 {
     return m_colorSpace;
 }
 
 void DisplayColorSpace::update()
 {
 #ifdef HAVE_X11
     if (auto *x11Application = qGuiApp->nativeInterface<QNativeInterface::QX11Application>()) {
         static const char *icc_profile = "_ICC_PROFILE";
         auto atom_cookie = xcb_intern_atom(x11Application->connection(), 0, sizeof(icc_profile), icc_profile);
         auto atom_reply = xcb_intern_atom_reply(x11Application->connection(), atom_cookie, nullptr);
         if (!atom_reply) {
             return;
         }
 
         auto icc_atom = atom_reply->atom;
         free(atom_reply);
 
         auto cookie = xcb_get_property(x11Application->connection(), // connection
                                        0, // delete
                                        QX11Info::appRootWindow(), // window
                                        icc_atom, // property
                                        XCB_ATOM_CARDINAL, // type
                                        0, // offset
                                        0); // length
         auto result = xcb_get_property_reply(x11Application->connection(), cookie, nullptr);
         if (!result) {
             return;
         }
 
         auto length = xcb_get_property_value_length(result);
         if (length <= 0) {
             return;
         }
 
         auto data = QByteArray(static_cast<const char *>(xcb_get_property_value(result)), length);
         auto colorSpace = QColorSpace::fromIccProfile(data);
         if (colorSpace.isValid()) {
             m_colorSpace = colorSpace;
         }
 
         free(result);
     }
 #endif
 }