cbbe94d769
Summary: On Wayland we cannot switch from OpenGL to QPainter compositor as this would break any running OpenGL application. KWin registers it's EGLDisplay to Wayland and without OpenGL this doesn't make sense any more. We are not able to render OpenGL buffers in the QPainter compositor. While it's theoretically possible to switch from QPainter to OpenGL it doesn't make any sense for the same reason. Any running OpenGL application would be using llvmpipe and could not be switched to proper OpenGL. This change stores the selected compositing type in Platform and the implementations can use it to restrict the supported compositors. On X11 we don't need this, all other Platforms implement the restriction. Thus it's no longer possible to switch the backends at runtime. Test Plan: Adjusted tests run, no runtime test as gui doesn't support switching to QPainter anyway. Reviewers: kwin Tags: #kwin Differential Revision: https://phabricator.kde.org/D19084
123 lines
3.8 KiB
C++
123 lines
3.8 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_X11WINDOWED_BACKEND_H
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#define KWIN_X11WINDOWED_BACKEND_H
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#include "platform.h"
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#include <kwin_export.h>
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#include <QObject>
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#include <QSize>
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#include <xcb/xcb.h>
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struct _XDisplay;
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typedef struct _XDisplay Display;
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typedef struct _XCBKeySymbols xcb_key_symbols_t;
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class NETWinInfo;
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namespace KWin
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{
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class KWIN_EXPORT X11WindowedBackend : public Platform
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{
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Q_OBJECT
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Q_INTERFACES(KWin::Platform)
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Q_PLUGIN_METADATA(IID "org.kde.kwin.Platform" FILE "x11.json")
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Q_PROPERTY(QSize size READ screenSize NOTIFY sizeChanged)
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public:
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X11WindowedBackend(QObject *parent = nullptr);
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virtual ~X11WindowedBackend();
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void init() override;
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QVector<QRect> screenGeometries() const override;
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QVector<qreal> screenScales() const override;
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xcb_connection_t *connection() const {
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return m_connection;
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}
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int screenNumer() const {
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return m_screenNumber;
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}
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xcb_window_t window() const {
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return windowForScreen(0);
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}
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xcb_window_t windowForScreen(int screen) const;
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Display *display() const {
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return m_display;
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}
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xcb_window_t rootWindow() const;
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Screens *createScreens(QObject *parent = nullptr) override;
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OpenGLBackend *createOpenGLBackend() override;
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QPainterBackend* createQPainterBackend() override;
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void warpPointer(const QPointF &globalPos) override;
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QVector<CompositingType> supportedCompositors() const override {
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if (selectedCompositor() != NoCompositing) {
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return {selectedCompositor()};
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}
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return QVector<CompositingType>{OpenGLCompositing, QPainterCompositing};
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}
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Q_SIGNALS:
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void sizeChanged();
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private:
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void createWindow();
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void startEventReading();
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void grabKeyboard(xcb_timestamp_t time);
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void updateWindowTitle();
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void handleEvent(xcb_generic_event_t *event);
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void handleClientMessage(xcb_client_message_event_t *event);
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void handleButtonPress(xcb_button_press_event_t *event);
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void handleExpose(xcb_expose_event_t *event);
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void updateSize(xcb_configure_notify_event_t *event);
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void createCursor(const QImage &img, const QPoint &hotspot);
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void initXInputForWindow(xcb_window_t window);
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void initXInput();
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xcb_connection_t *m_connection = nullptr;
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xcb_screen_t *m_screen = nullptr;
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xcb_key_symbols_t *m_keySymbols = nullptr;
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int m_screenNumber = 0;
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struct Output {
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xcb_window_t window = XCB_WINDOW_NONE;
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QSize size;
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qreal scale = 1;
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QPoint xPosition;
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QPoint internalPosition;
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NETWinInfo *winInfo = nullptr;
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};
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QVector<Output> m_windows;
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xcb_atom_t m_protocols = XCB_ATOM_NONE;
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xcb_atom_t m_deleteWindowProtocol = XCB_ATOM_NONE;
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xcb_cursor_t m_cursor = XCB_CURSOR_NONE;
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Display *m_display = nullptr;
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bool m_keyboardGrabbed = false;
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bool m_hasXInput = false;
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int m_xiOpcode = 0;
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int m_majorVersion = 0;
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int m_minorVersion = 0;
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};
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}
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#endif
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