100 lines
2.4 KiB
C++
100 lines
2.4 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) 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_FB_BACKEND_H
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#define KWIN_FB_BACKEND_H
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#include "abstract_backend.h"
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#include <QImage>
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#include <QSize>
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namespace KWin
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{
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class KWIN_EXPORT FramebufferBackend : public AbstractBackend
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{
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Q_OBJECT
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public:
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explicit FramebufferBackend(QObject *parent = nullptr);
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virtual ~FramebufferBackend();
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Screens *createScreens(QObject *parent = nullptr) override;
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QPainterBackend *createQPainterBackend() override;
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void init();
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void setDevice(const QString &device) {
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m_device = device;
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}
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bool isValid() const {
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return m_fd >= 0;
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}
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QSize size() const {
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return m_resolution;
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}
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QSize physicalSize() const {
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return m_physicalSize;
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}
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void map();
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void unmap();
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void *mappedMemory() const {
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return m_memory;
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}
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int bytesPerLine() const {
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return m_bytesPerLine;
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}
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int bufferSize() const {
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return m_bufferLength;
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}
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quint32 bitsPerPixel() const {
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return m_bitsPerPixel;
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}
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QImage::Format imageFormat() const;
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Q_SIGNALS:
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void screensQueried();
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private:
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void openFrameBuffer();
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bool queryScreenInfo();
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QString m_device = QStringLiteral("/dev/fb0");
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QSize m_resolution;
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QSize m_physicalSize;
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QByteArray m_id;
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struct Color {
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quint32 offset;
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quint32 length;
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};
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Color m_red;
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Color m_green;
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Color m_blue;
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Color m_alpha;
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quint32 m_bitsPerPixel = 0;
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int m_fd = -1;
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quint32 m_bufferLength = 0;
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int m_bytesPerLine = 0;
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void *m_memory = nullptr;
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};
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}
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#endif
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