7b13393b64
Summary: This patch rewrites large parts of the Wayland platform plugin, in order to facilitate the testing of multi output behavior in nested KWin sessions. For that a new class WaylandOutput is introduced, which is based on AbstractOutput and by that shares functionality with our virtual and DRM platform plugins. The EGL/GBM and QPainter backends have been remodelled after the DRM one, sharing similiarities there as well now. Pointer grabbing has been rewritten to support multiple outputs, now using pointer locking instead of confining and drawing in this case onto a sub- surface, which get dynamically recreated in between the different output surfaces while the cursor is being moved. Window resizing is possible if host supports xdg-shell, but currently the mode size does not yet fill the new window size. The number of outputs can be set by command line argument `--output-count`, scaling is also supported by setting the argument `--scale`. Further steps could be: * Enabling automatic fill of resized windows via Wayland mode change * Multiple diverging initial sizes and scale factors for mulitple outputs **Watch it in action:** https://youtu.be/FYItn1jvkbI Test Plan: Tested it in live session. Reviewers: #kwin, davidedmundson Reviewed By: #kwin, davidedmundson Subscribers: davidedmundson, zzag, kwin Tags: #kwin Differential Revision: https://phabricator.kde.org/D18465
102 lines
2.6 KiB
C++
102 lines
2.6 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 2019 Roman Gilg <subdiff@gmail.com>
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Copyright 2013, 2015 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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#ifndef KWIN_SCENE_QPAINTER_WAYLAND_BACKEND_H
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#define KWIN_SCENE_QPAINTER_WAYLAND_BACKEND_H
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#include <platformsupport/scenes/qpainter/backend.h>
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#include <QObject>
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#include <QImage>
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#include <QWeakPointer>
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namespace KWayland
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{
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namespace Client
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{
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class ShmPool;
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class Buffer;
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}
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}
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namespace KWin
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{
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namespace Wayland
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{
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class WaylandBackend;
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class WaylandOutput;
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class WaylandQPainterBackend;
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class WaylandQPainterOutput : public QObject
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{
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Q_OBJECT
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public:
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WaylandQPainterOutput(WaylandOutput *output, QObject *parent = nullptr);
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~WaylandQPainterOutput();
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bool init(KWayland::Client::ShmPool *pool);
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void updateSize(const QSize &size);
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void remapBuffer();
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void prepareRenderingFrame();
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void present(const QRegion &damage);
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private:
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WaylandOutput *m_waylandOutput;
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KWayland::Client::ShmPool *m_pool;
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QWeakPointer<KWayland::Client::Buffer> m_buffer;
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QImage m_backBuffer;
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friend class WaylandQPainterBackend;
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};
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class WaylandQPainterBackend : public QObject, public QPainterBackend
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{
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Q_OBJECT
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public:
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explicit WaylandQPainterBackend(WaylandBackend *b);
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virtual ~WaylandQPainterBackend();
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virtual bool usesOverlayWindow() const override;
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virtual QImage *buffer() override;
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QImage *bufferForScreen(int screenId) override;
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virtual void present(int mask, const QRegion& damage) override;
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virtual void prepareRenderingFrame() override;
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virtual bool needsFullRepaint() const override;
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bool perScreenRendering() const override;
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private:
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void createOutput(WaylandOutput *waylandOutput);
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void frameRendered();
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WaylandBackend *m_backend;
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bool m_needsFullRepaint;
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QVector<WaylandQPainterOutput*> m_outputs;
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};
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}
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}
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#endif
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