09489a4c2b
Summary: So far KWin does not know which Compositors the platform actually supports. This results in KWin happily trying to use the OpenGL compositor on fbdev or the QPainter compositor on hwcomposer although that is obviously going to fail as the platform doesn't support this. By adding a pure virtual method all Platforms can define what they support. In a later step the Compositor can use this to create an appropriate scene and also perform proper fallback handling in case the scene creation fails. Test Plan: Compiles Reviewers: #kwin, #plasma Subscribers: plasma-devel, kwin Tags: #kwin Differential Revision: https://phabricator.kde.org/D8316
111 lines
2.8 KiB
C++
111 lines
2.8 KiB
C++
/********************************************************************
|
|
KWin - the KDE window manager
|
|
This file is part of the KDE project.
|
|
|
|
Copyright (C) 2015 Martin Gräßlin <mgraesslin@kde.org>
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*********************************************************************/
|
|
#ifndef KWIN_FB_BACKEND_H
|
|
#define KWIN_FB_BACKEND_H
|
|
#include "platform.h"
|
|
|
|
#include <QImage>
|
|
#include <QSize>
|
|
|
|
namespace KWin
|
|
{
|
|
|
|
class KWIN_EXPORT FramebufferBackend : public Platform
|
|
{
|
|
Q_OBJECT
|
|
Q_INTERFACES(KWin::Platform)
|
|
Q_PLUGIN_METADATA(IID "org.kde.kwin.Platform" FILE "fbdev.json")
|
|
public:
|
|
explicit FramebufferBackend(QObject *parent = nullptr);
|
|
virtual ~FramebufferBackend();
|
|
|
|
Screens *createScreens(QObject *parent = nullptr) override;
|
|
QPainterBackend *createQPainterBackend() override;
|
|
|
|
QSize screenSize() const override {
|
|
return m_resolution;
|
|
}
|
|
|
|
void init() override;
|
|
|
|
bool isValid() const {
|
|
return m_fd >= 0;
|
|
}
|
|
|
|
QSize size() const {
|
|
return m_resolution;
|
|
}
|
|
QSize physicalSize() const {
|
|
return m_physicalSize;
|
|
}
|
|
|
|
void map();
|
|
void unmap();
|
|
void *mappedMemory() const {
|
|
return m_memory;
|
|
}
|
|
int bytesPerLine() const {
|
|
return m_bytesPerLine;
|
|
}
|
|
int bufferSize() const {
|
|
return m_bufferLength;
|
|
}
|
|
quint32 bitsPerPixel() const {
|
|
return m_bitsPerPixel;
|
|
}
|
|
QImage::Format imageFormat() const;
|
|
/**
|
|
* @returns whether the imageFormat is BGR instead of RGB.
|
|
**/
|
|
bool isBGR() const {
|
|
return m_bgr;
|
|
}
|
|
|
|
QVector<CompositingType> supportedCompositors() const override {
|
|
return QVector<CompositingType>{QPainterCompositing};
|
|
}
|
|
|
|
private:
|
|
void openFrameBuffer();
|
|
bool queryScreenInfo();
|
|
void initImageFormat();
|
|
QSize m_resolution;
|
|
QSize m_physicalSize;
|
|
QByteArray m_id;
|
|
struct Color {
|
|
quint32 offset;
|
|
quint32 length;
|
|
};
|
|
Color m_red;
|
|
Color m_green;
|
|
Color m_blue;
|
|
Color m_alpha;
|
|
quint32 m_bitsPerPixel = 0;
|
|
int m_fd = -1;
|
|
quint32 m_bufferLength = 0;
|
|
int m_bytesPerLine = 0;
|
|
void *m_memory = nullptr;
|
|
QImage::Format m_imageFormat = QImage::Format_Invalid;
|
|
bool m_bgr = false;
|
|
};
|
|
|
|
}
|
|
|
|
#endif
|