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Move the X11 specific OverlayWindow into the platform/x11

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Summary:
The overlay window is only needed for the X11 based compositors. Given
that it is better suited in the X11 platform. Unfortunately it is not
possible to completely move it into the platform plugin as it is still
referenced in KWin core (e.g. SceneXRender). Due to that the
OverlayWindow in KWin core is turned into a pure virtual class with the
implementation being moved into the plugin.

The platform API gains a new virtual factory method which is only
implemented in the X11 platform.

Test Plan: Compiles

Reviewers: #kwin, #plasma

Subscribers: plasma-devel, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D7193
This commit is contained in:
Martin Flöser 2017-08-07 17:54:56 +02:00
parent bbca8c6677
commit b4a79d30e6
12 changed files with 279 additions and 173 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

151
overlaywindow.cpp
View file

@ -20,26 +20,8 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
#include "overlaywindow.h"
#include "kwinglobals.h"
#include "screens.h"
#include "utils.h"
#include "xcbutils.h"
#include "assert.h"
#include <QVector>
#include <xcb/composite.h>
#include <xcb/shape.h>
#if XCB_COMPOSITE_MAJOR_VERSION > 0 || XCB_COMPOSITE_MINOR_VERSION >= 3
#define KWIN_HAVE_XCOMPOSITE_OVERLAY
#endif
namespace KWin {
OverlayWindow::OverlayWindow()
: m_visible(true)
, m_shown(false)
, m_window(XCB_WINDOW_NONE)
{
}
@ -47,137 +29,4 @@ OverlayWindow::~OverlayWindow()
{
}
bool OverlayWindow::create()
{
assert(m_window == XCB_WINDOW_NONE);
if (!Xcb::Extensions::self()->isCompositeOverlayAvailable())
return false;
if (!Xcb::Extensions::self()->isShapeInputAvailable()) // needed in setupOverlay()
return false;
#ifdef KWIN_HAVE_XCOMPOSITE_OVERLAY
Xcb::OverlayWindow overlay(rootWindow());
if (overlay.isNull()) {
return false;
}
m_window = overlay->overlay_win;
if (m_window == XCB_WINDOW_NONE)
return false;
resize(screens()->size());
return true;
#else
return false;
#endif
}
void OverlayWindow::setup(xcb_window_t window)
{
assert(m_window != XCB_WINDOW_NONE);
assert(Xcb::Extensions::self()->isShapeInputAvailable());
setNoneBackgroundPixmap(m_window);
m_shape = QRegion();
const QSize &s = screens()->size();
setShape(QRect(0, 0, s.width(), s.height()));
if (window != XCB_WINDOW_NONE) {
setNoneBackgroundPixmap(window);
setupInputShape(window);
}
const uint32_t eventMask = XCB_EVENT_MASK_VISIBILITY_CHANGE;
xcb_change_window_attributes(connection(), m_window, XCB_CW_EVENT_MASK, &eventMask);
}
void OverlayWindow::setupInputShape(xcb_window_t window)
{
xcb_shape_rectangles(connection(), XCB_SHAPE_SO_SET, XCB_SHAPE_SK_INPUT, XCB_CLIP_ORDERING_UNSORTED, window, 0, 0, 0, NULL);
}
void OverlayWindow::setNoneBackgroundPixmap(xcb_window_t window)
{
const uint32_t mask = XCB_BACK_PIXMAP_NONE;
xcb_change_window_attributes(connection(), window, XCB_CW_BACK_PIXMAP, &mask);
}
void OverlayWindow::show()
{
assert(m_window != XCB_WINDOW_NONE);
if (m_shown)
return;
xcb_map_subwindows(connection(), m_window);
xcb_map_window(connection(), m_window);
m_shown = true;
}
void OverlayWindow::hide()
{
assert(m_window != XCB_WINDOW_NONE);
xcb_unmap_window(connection(), m_window);
m_shown = false;
const QSize &s = screens()->size();
setShape(QRect(0, 0, s.width(), s.height()));
}
void OverlayWindow::setShape(const QRegion& reg)
{
// Avoid setting the same shape again, it causes flicker (apparently it is not a no-op
// and triggers something).
if (reg == m_shape)
return;
QVector< QRect > rects = reg.rects();
xcb_rectangle_t *xrects = new xcb_rectangle_t[rects.count()];
for (int i = 0;
i < rects.count();
++i) {
xrects[ i ].x = rects[ i ].x();
xrects[ i ].y = rects[ i ].y();
xrects[ i ].width = rects[ i ].width();
xrects[ i ].height = rects[ i ].height();
}
xcb_shape_rectangles(connection(), XCB_SHAPE_SO_SET, XCB_SHAPE_SK_BOUNDING, XCB_CLIP_ORDERING_UNSORTED,
m_window, 0, 0, rects.count(), xrects);
delete[] xrects;
setupInputShape(m_window);
m_shape = reg;
}
void OverlayWindow::resize(const QSize &size)
{
assert(m_window != XCB_WINDOW_NONE);
const uint32_t geometry[2] = {
static_cast<uint32_t>(size.width()),
static_cast<uint32_t>(size.height())
};
xcb_configure_window(connection(), m_window, XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT, geometry);
setShape(QRegion(0, 0, size.width(), size.height()));
}
bool OverlayWindow::isVisible() const
{
return m_visible;
}
void OverlayWindow::setVisibility(bool visible)
{
m_visible = visible;
}
void OverlayWindow::destroy()
{
if (m_window == XCB_WINDOW_NONE)
return;
// reset the overlay shape
const QSize &s = screens()->size();
xcb_rectangle_t rec = { 0, 0, static_cast<uint16_t>(s.width()), static_cast<uint16_t>(s.height()) };
xcb_shape_rectangles(connection(), XCB_SHAPE_SO_SET, XCB_SHAPE_SK_BOUNDING, XCB_CLIP_ORDERING_UNSORTED, m_window, 0, 0, 1, &rec);
xcb_shape_rectangles(connection(), XCB_SHAPE_SO_SET, XCB_SHAPE_SK_INPUT, XCB_CLIP_ORDERING_UNSORTED, m_window, 0, 0, 1, &rec);
#ifdef KWIN_HAVE_XCOMPOSITE_OVERLAY
xcb_composite_release_overlay_window(connection(), m_window);
#endif
m_window = XCB_WINDOW_NONE;
m_shown = false;
}
xcb_window_t OverlayWindow::window() const
{
return m_window;
}
} // namespace KWin

32
overlaywindow.h
View file

@ -30,28 +30,22 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
namespace KWin {
class KWIN_EXPORT OverlayWindow {
public:
OverlayWindow();
~OverlayWindow();
virtual ~OverlayWindow();
/// Creates XComposite overlay window, call initOverlay() afterwards
bool create();
virtual bool create() = 0;
/// Init overlay and the destination window in it
void setup(xcb_window_t window);
void show();
void hide(); // hides and resets overlay window
void setShape(const QRegion& reg);
void resize(const QSize &size);
virtual void setup(xcb_window_t window) = 0;
virtual void show() = 0;
virtual void hide() = 0; // hides and resets overlay window
virtual void setShape(const QRegion& reg) = 0;
virtual void resize(const QSize &size) = 0;
/// Destroys XComposite overlay window
void destroy();
xcb_window_t window() const;
bool isVisible() const;
void setVisibility(bool visible);
private:
void setNoneBackgroundPixmap(xcb_window_t window);
void setupInputShape(xcb_window_t window);
bool m_visible;
bool m_shown; // For showOverlay()
QRegion m_shape;
xcb_window_t m_window;
virtual void destroy() = 0;
virtual xcb_window_t window() const = 0;
virtual bool isVisible() const = 0;
virtual void setVisibility(bool visible) = 0;
protected:
OverlayWindow();
};
} // namespace

6
platform.cpp
View file

@ -23,6 +23,7 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
#include "composite.h"
#include "cursor.h"
#include "input.h"
#include "overlaywindow.h"
#include "pointer_input.h"
#include "scene_opengl.h"
#include "screenedge.h"
@ -460,4 +461,9 @@ void Platform::setupActionForGlobalAccel(QAction *action)
Q_UNUSED(action)
}
OverlayWindow *Platform::createOverlayWindow()
{
return nullptr;
}
}

7
platform.h
View file

@ -40,6 +40,7 @@ namespace KWin
{
class Edge;
class OverlayWindow;
class OpenGLBackend;
class QPainterBackend;
class Screens;
@ -301,6 +302,12 @@ public:
m_initialOutputScale = scale;
}
/**
* Creates the OverlayWindow required for X11 based compositors.
* Default implementation returns @c nullptr.
**/
virtual OverlayWindow *createOverlayWindow();
public Q_SLOTS:
void pointerMotion(const QPointF &position, quint32 time);
void pointerButtonPressed(quint32 button, quint32 time);

2
plugins/platforms/x11/common/eglonxbackend.cpp
View file

@ -40,7 +40,7 @@ namespace KWin
EglOnXBackend::EglOnXBackend(Display *display)
: AbstractEglBackend()
, m_overlayWindow(new OverlayWindow())
, m_overlayWindow(kwinApp()->platform()->createOverlayWindow())
, surfaceHasSubPost(0)
, m_bufferAge(0)
, m_usesOverlayWindow(true)

1
plugins/platforms/x11/standalone/CMakeLists.txt
View file

@ -5,6 +5,7 @@ set(X11PLATFORM_SOURCES
x11_platform.cpp
screens_xrandr.cpp
windowselector.cpp
overlaywindow_x11.cpp
)
if(X11_Xinput_FOUND)

3
plugins/platforms/x11/standalone/glxbackend.cpp
View file

@ -29,6 +29,7 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
#include "options.h"
#include "overlaywindow.h"
#include "composite.h"
#include "platform.h"
#include "screens.h"
#include "xcbutils.h"
// kwin libs
@ -104,7 +105,7 @@ bool SwapEventFilter::event(xcb_generic_event_t *event)
GlxBackend::GlxBackend(Display *display)
: OpenGLBackend()
, m_overlayWindow(new OverlayWindow())
, m_overlayWindow(kwinApp()->platform()->createOverlayWindow())
, window(None)
, fbconfig(NULL)
, glxWindow(None)

185
plugins/platforms/x11/standalone/overlaywindow_x11.cpp Normal file
View file

@ -0,0 +1,185 @@
/********************************************************************
KWin - the KDE window manager
This file is part of the KDE project.
Copyright (C) 2011 Arthur Arlt <a.arlt@stud.uni-heidelberg.de>
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/>.
*********************************************************************/
#include "overlaywindow_x11.h"
#include "kwinglobals.h"
#include "screens.h"
#include "utils.h"
#include "xcbutils.h"
#include "assert.h"
#include <QVector>
#include <xcb/composite.h>
#include <xcb/shape.h>
#if XCB_COMPOSITE_MAJOR_VERSION > 0 || XCB_COMPOSITE_MINOR_VERSION >= 3
#define KWIN_HAVE_XCOMPOSITE_OVERLAY
#endif
namespace KWin {
OverlayWindowX11::OverlayWindowX11()
: OverlayWindow()
, m_visible(true)
, m_shown(false)
, m_window(XCB_WINDOW_NONE)
{
}
OverlayWindowX11::~OverlayWindowX11()
{
}
bool OverlayWindowX11::create()
{
assert(m_window == XCB_WINDOW_NONE);
if (!Xcb::Extensions::self()->isCompositeOverlayAvailable())
return false;
if (!Xcb::Extensions::self()->isShapeInputAvailable()) // needed in setupOverlay()
return false;
#ifdef KWIN_HAVE_XCOMPOSITE_OVERLAY
Xcb::OverlayWindow overlay(rootWindow());
if (overlay.isNull()) {
return false;
}
m_window = overlay->overlay_win;
if (m_window == XCB_WINDOW_NONE)
return false;
resize(screens()->size());
return true;
#else
return false;
#endif
}
void OverlayWindowX11::setup(xcb_window_t window)
{
assert(m_window != XCB_WINDOW_NONE);
assert(Xcb::Extensions::self()->isShapeInputAvailable());
setNoneBackgroundPixmap(m_window);
m_shape = QRegion();
const QSize &s = screens()->size();
setShape(QRect(0, 0, s.width(), s.height()));
if (window != XCB_WINDOW_NONE) {
setNoneBackgroundPixmap(window);
setupInputShape(window);
}
const uint32_t eventMask = XCB_EVENT_MASK_VISIBILITY_CHANGE;
xcb_change_window_attributes(connection(), m_window, XCB_CW_EVENT_MASK, &eventMask);
}
void OverlayWindowX11::setupInputShape(xcb_window_t window)
{
xcb_shape_rectangles(connection(), XCB_SHAPE_SO_SET, XCB_SHAPE_SK_INPUT, XCB_CLIP_ORDERING_UNSORTED, window, 0, 0, 0, NULL);
}
void OverlayWindowX11::setNoneBackgroundPixmap(xcb_window_t window)
{
const uint32_t mask = XCB_BACK_PIXMAP_NONE;
xcb_change_window_attributes(connection(), window, XCB_CW_BACK_PIXMAP, &mask);
}
void OverlayWindowX11::show()
{
assert(m_window != XCB_WINDOW_NONE);
if (m_shown)
return;
xcb_map_subwindows(connection(), m_window);
xcb_map_window(connection(), m_window);
m_shown = true;
}
void OverlayWindowX11::hide()
{
assert(m_window != XCB_WINDOW_NONE);
xcb_unmap_window(connection(), m_window);
m_shown = false;
const QSize &s = screens()->size();
setShape(QRect(0, 0, s.width(), s.height()));
}
void OverlayWindowX11::setShape(const QRegion& reg)
{
// Avoid setting the same shape again, it causes flicker (apparently it is not a no-op
// and triggers something).
if (reg == m_shape)
return;
QVector< QRect > rects = reg.rects();
xcb_rectangle_t *xrects = new xcb_rectangle_t[rects.count()];
for (int i = 0;
i < rects.count();
++i) {
xrects[ i ].x = rects[ i ].x();
xrects[ i ].y = rects[ i ].y();
xrects[ i ].width = rects[ i ].width();
xrects[ i ].height = rects[ i ].height();
}
xcb_shape_rectangles(connection(), XCB_SHAPE_SO_SET, XCB_SHAPE_SK_BOUNDING, XCB_CLIP_ORDERING_UNSORTED,
m_window, 0, 0, rects.count(), xrects);
delete[] xrects;
setupInputShape(m_window);
m_shape = reg;
}
void OverlayWindowX11::resize(const QSize &size)
{
assert(m_window != XCB_WINDOW_NONE);
const uint32_t geometry[2] = {
static_cast<uint32_t>(size.width()),
static_cast<uint32_t>(size.height())
};
xcb_configure_window(connection(), m_window, XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT, geometry);
setShape(QRegion(0, 0, size.width(), size.height()));
}
bool OverlayWindowX11::isVisible() const
{
return m_visible;
}
void OverlayWindowX11::setVisibility(bool visible)
{
m_visible = visible;
}
void OverlayWindowX11::destroy()
{
if (m_window == XCB_WINDOW_NONE)
return;
// reset the overlay shape
const QSize &s = screens()->size();
xcb_rectangle_t rec = { 0, 0, static_cast<uint16_t>(s.width()), static_cast<uint16_t>(s.height()) };
xcb_shape_rectangles(connection(), XCB_SHAPE_SO_SET, XCB_SHAPE_SK_BOUNDING, XCB_CLIP_ORDERING_UNSORTED, m_window, 0, 0, 1, &rec);
xcb_shape_rectangles(connection(), XCB_SHAPE_SO_SET, XCB_SHAPE_SK_INPUT, XCB_CLIP_ORDERING_UNSORTED, m_window, 0, 0, 1, &rec);
#ifdef KWIN_HAVE_XCOMPOSITE_OVERLAY
xcb_composite_release_overlay_window(connection(), m_window);
#endif
m_window = XCB_WINDOW_NONE;
m_shown = false;
}
xcb_window_t OverlayWindowX11::window() const
{
return m_window;
}
} // namespace KWin

54
plugins/platforms/x11/standalone/overlaywindow_x11.h Normal file
View file

@ -0,0 +1,54 @@
/********************************************************************
KWin - the KDE window manager
This file is part of the KDE project.
Copyright (C) 2011 Arthur Arlt <a.arlt@stud.uni-heidelberg.de>
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_OVERLAYWINDOW_X11_H
#define KWIN_OVERLAYWINDOW_X11_H
#include "../../../../overlaywindow.h"
namespace KWin {
class KWIN_EXPORT OverlayWindowX11 : public OverlayWindow {
public:
OverlayWindowX11();
~OverlayWindowX11();
/// Creates XComposite overlay window, call initOverlay() afterwards
bool create() override;
/// Init overlay and the destination window in it
void setup(xcb_window_t window) override;
void show() override;
void hide() override; // hides and resets overlay window
void setShape(const QRegion& reg) override;
void resize(const QSize &size) override;
/// Destroys XComposite overlay window
void destroy() override;
xcb_window_t window() const override;
bool isVisible() const override;
void setVisibility(bool visible) override;
private:
void setNoneBackgroundPixmap(xcb_window_t window);
void setupInputShape(xcb_window_t window);
bool m_visible;
bool m_shown; // For showOverlay()
QRegion m_shape;
xcb_window_t m_window;
};
} // namespace
#endif //KWIN_OVERLAYWINDOW_H

6
plugins/platforms/x11/standalone/x11_platform.cpp
View file

@ -34,6 +34,7 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
#include "logging.h"
#include "screens_xrandr.h"
#include "options.h"
#include "overlaywindow_x11.h"
#include <KConfigGroup>
#include <KLocalizedString>
@ -309,4 +310,9 @@ void X11StandalonePlatform::setupActionForGlobalAccel(QAction *action)
});
}
OverlayWindow *X11StandalonePlatform::createOverlayWindow()
{
return new OverlayWindowX11();
}
}

2
plugins/platforms/x11/standalone/x11_platform.h
View file

@ -55,6 +55,8 @@ public:
void setupActionForGlobalAccel(QAction *action) override;
OverlayWindow *createOverlayWindow() override;
protected:
void doHideCursor() override;
void doShowCursor() override;

3
scene_xrender.cpp
View file

@ -32,6 +32,7 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
#include "effects.h"
#include "main.h"
#include "overlaywindow.h"
#include "platform.h"
#include "xcbutils.h"
#include "kwinxrenderutils.h"
#include "decorations/decoratedclient.h"
@ -109,7 +110,7 @@ void XRenderBackend::screenGeometryChanged(const QSize &size)
//****************************************
X11XRenderBackend::X11XRenderBackend()
: XRenderBackend()
, m_overlayWindow(new OverlayWindow())
, m_overlayWindow(kwinApp()->platform()->createOverlayWindow())
, m_front(XCB_RENDER_PICTURE_NONE)
, m_format(0)
{