94 lines
2.7 KiB
C++
94 lines
2.7 KiB
C++
/********************************************************************
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KWin - the KDE window manager
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This file is part of the KDE project.
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Copyright (C) 2014 Martin Gräßlin <mgraesslin@kde.org>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*********************************************************************/
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#include "decorationrenderer.h"
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#include "decoratedclient.h"
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#include "deleted.h"
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#include "abstract_client.h"
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#include "screens.h"
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#include <KDecoration2/Decoration>
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#include <KDecoration2/DecoratedClient>
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#include <QDebug>
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#include <QPainter>
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namespace KWin
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{
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namespace Decoration
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{
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Renderer::Renderer(DecoratedClientImpl *client)
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: QObject(client)
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, m_client(client)
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, m_imageSizesDirty(true)
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{
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auto markImageSizesDirty = [this]{
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schedule(m_client->client()->rect());
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m_imageSizesDirty = true;
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};
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connect(client->client(), &AbstractClient::screenScaleChanged, this, markImageSizesDirty);
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connect(client->decoration(), &KDecoration2::Decoration::bordersChanged, this, markImageSizesDirty);
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connect(client->decoratedClient(), &KDecoration2::DecoratedClient::sizeChanged, this, markImageSizesDirty);
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}
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Renderer::~Renderer() = default;
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void Renderer::schedule(const QRect &rect)
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{
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m_scheduled = m_scheduled.united(rect);
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emit renderScheduled(rect);
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}
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QRegion Renderer::getScheduled()
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{
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QRegion region = m_scheduled;
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m_scheduled = QRegion();
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return region;
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}
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QImage Renderer::renderToImage(const QRect &geo)
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{
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Q_ASSERT(m_client);
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auto dpr = client()->client()->screenScale();
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QImage image(geo.width() * dpr, geo.height() * dpr, QImage::Format_ARGB32_Premultiplied);
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image.setDevicePixelRatio(dpr);
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image.fill(Qt::transparent);
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QPainter p(&image);
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p.setRenderHint(QPainter::Antialiasing);
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p.setWindow(QRect(geo.topLeft(), geo.size() * dpr));
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p.setClipRect(geo);
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renderToPainter(&p, geo);
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return image;
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}
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void Renderer::renderToPainter(QPainter *painter, const QRect &rect)
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{
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client()->decoration()->paint(painter, rect);
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}
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void Renderer::reparent(Deleted *deleted)
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{
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setParent(deleted);
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m_client = nullptr;
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}
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}
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}
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