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