File indexing completed on 2025-02-23 04:26:50

 /*
  * Copyright (C) 2021 CutefishOS Team.
  *
  * Author:     cutefish <cutefishos@foxmail.com>
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation, either version 3 of the License, or
  * any later version.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 #include "windowblur.h"
 
 #include <QApplication>
 #include <QPainterPath>
 #include <QScreen>
 
 #if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
 #include <QX11Info>
 #endif
 
 #include <xcb/xcb.h>
 #include <xcb/shape.h>
 #include <xcb/xcb_icccm.h>
 #include <KWindowSystem>
 #include <KWindowEffects>
 #include "style.h"
 
 WindowBlur::WindowBlur(QObject *parent) noexcept
 : QObject(parent)
 , m_view(nullptr)
 , m_enabled(false)
 , m_windowRadius(0.0)
 {
 }
 
 WindowBlur::~WindowBlur()
 {
 }
 
 void WindowBlur::classBegin()
 {
 }
 
 void WindowBlur::componentComplete()
 {
     Style::instance()->setTranslucencyAvailable(m_enabled);
     updateBlur();
 }
 
 void WindowBlur::setView(QWindow *view)
 {
     if (view != m_view) {
         m_view = view;
         updateBlur();
         Q_EMIT viewChanged();
         
         connect(m_view, &QWindow::visibleChanged, this, &WindowBlur::onViewVisibleChanged);
     }
 }
 
 QWindow* WindowBlur::view() const
 {
     return m_view;
 }
 
 void WindowBlur::setGeometry(const QRect &rect)
 {
     if (rect != m_rect) {
         m_rect = rect;
         
        
             updateBlur();
         
         Q_EMIT geometryChanged();
     }
 }
 
 QRect WindowBlur::geometry() const
 {
     return m_rect;
 }
 
 void WindowBlur::setEnabled(bool enabled)
 {
     if (enabled != m_enabled) {
         m_enabled = enabled;
         updateBlur();
         Q_EMIT enabledChanged();
     }
 }
 
 bool WindowBlur::enabled() const
 {
     return m_enabled;
 }
 
 void WindowBlur::setWindowRadius(qreal radius)
 {
     if (radius != m_windowRadius) {
         m_windowRadius = radius;
         
             updateBlur();
         
         Q_EMIT windowRadiusChanged();
     }
 }
 
 qreal WindowBlur::windowRadius() const
 {
     return m_windowRadius;
 }
 
 void WindowBlur::onViewVisibleChanged(bool visible)
 {
     if (visible)
         updateBlur();
 }
 
 void WindowBlur::updateBlur()
 {
     if (!m_view)
         return;
 
     if(KWindowSystem::isPlatformWayland())
     {
         qDebug() << "SETTING BLURRED WINDOW BG WAYLAND KDE;" << m_enabled << m_view;
         KWindowEffects::enableBlurBehind(m_view, m_enabled, m_rect);
         KWindowEffects::enableBackgroundContrast(m_view, m_enabled);
         return;
     }
 
 #if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)    
     xcb_connection_t *c = QX11Info::connection();
     if (!c)
         return;
     
     const QByteArray effectName = QByteArrayLiteral("_KDE_NET_WM_BLUR_BEHIND_REGION");
     xcb_intern_atom_cookie_t atomCookie = xcb_intern_atom_unchecked(c, false, effectName.length(), effectName.constData());
     QScopedPointer<xcb_intern_atom_reply_t, QScopedPointerPodDeleter> atom(xcb_intern_atom_reply(c, atomCookie, nullptr));
     if (!atom)
         return;
     
     if (m_enabled) {
         qreal devicePixelRatio = m_view->screen()->devicePixelRatio();
         QPainterPath path;
         path.addRoundedRect(QRect(QPoint(0, 0), m_view->size() * devicePixelRatio),
                             m_windowRadius * devicePixelRatio,
                             m_windowRadius * devicePixelRatio);
         QVector<uint32_t> data;
         foreach (const QPolygonF &polygon, path.toFillPolygons()) {
             QRegion region = polygon.toPolygon();
             for (auto i = region.begin(); i != region.end(); ++i) {
                 data << i->x() << i->y() << i->width() << i->height();
             }
         }
         
         xcb_change_property(c, XCB_PROP_MODE_REPLACE, m_view->winId(), atom->atom, XCB_ATOM_CARDINAL,
                             32, data.size(), data.constData());
         
     } else {
         xcb_delete_property(c, m_view->winId(), atom->atom);
     }
 #endif
 }