File indexing completed on 2024-04-28 05:26:20

 //////////////////////////////////////////////////////////////////////////////
 // breezeblurhelper.cpp
 // handle regions passed to kwin for blurring
 // -------------------
 //
 // SPDX-FileCopyrightText: 2018 Alex Nemeth <alex.nemeth329@gmail.com>
 //
 // Largely rewritten from Oxygen widget style
 // SPDX-FileCopyrightText: 2007 Thomas Luebking <thomas.luebking@web.de>
 // SPDX-FileCopyrightText: 2010 Hugo Pereira Da Costa <hugo.pereira@free.fr>
 //
 // SPDX-License-Identifier: MIT
 //////////////////////////////////////////////////////////////////////////////
 
 #include "breezeblurhelper.h"
 #include "breezestyleconfigdata.h"
 
 #include <KWindowEffects>
 
 #include <QEvent>
 #include <QVector>
 
 namespace Breeze
 {
 //___________________________________________________________
 BlurHelper::BlurHelper(QObject *parent)
     : QObject(parent)
 {
 }
 
 //___________________________________________________________
 void BlurHelper::registerWidget(QWidget *widget)
 {
     // install event filter
     addEventFilter(widget);
 
     // schedule shadow area repaint
     update(widget);
 }
 
 //___________________________________________________________
 void BlurHelper::unregisterWidget(QWidget *widget)
 {
     // remove event filter
     widget->removeEventFilter(this);
 }
 
 //___________________________________________________________
 bool BlurHelper::eventFilter(QObject *object, QEvent *event)
 {
     switch (event->type()) {
     case QEvent::Hide:
     case QEvent::Show:
     case QEvent::Resize: {
         // cast to widget and check
         QWidget *widget(qobject_cast<QWidget *>(object));
 
         if (!widget) {
             break;
         }
 
         update(widget);
         break;
     }
 
     default:
         break;
     }
 
     // never eat events
     return false;
 }
 
 //___________________________________________________________
 void BlurHelper::update(QWidget *widget) const
 {
     /*
     directly from bespin code. Supposedly prevent playing with some 'pseudo-widgets'
     that have winId matching some other -random- window
     */
     if (!(widget->testAttribute(Qt::WA_WState_Created) || widget->internalWinId())) {
         return;
     }
 
     widget->winId(); // force creation of the window handle
     KWindowEffects::enableBlurBehind(widget->windowHandle(), true);
 
     // force update
     if (widget->isVisible()) {
         widget->update();
     }
 }
 }