102 lines
2.5 KiB
C++
102 lines
2.5 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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SPDX-FileCopyrightText: 2014 Martin Gräßlin <mgraesslin@kde.org>
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SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "decorationrenderer.h"
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#include "decoratedclient.h"
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#include "decorations/decorations_logging.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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// Guess the pixel format of the X pixmap into which the QImage will be copied.
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QImage::Format format;
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const int depth = client()->client()->depth();
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switch (depth) {
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case 30:
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format = QImage::Format_A2RGB30_Premultiplied;
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break;
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case 24:
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case 32:
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format = QImage::Format_ARGB32_Premultiplied;
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break;
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default:
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qCCritical(KWIN_DECORATIONS) << "Unsupported client depth" << depth;
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format = QImage::Format_ARGB32_Premultiplied;
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break;
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};
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QImage image(geo.width() * dpr, geo.height() * dpr, format);
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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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