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Add dummy placeholder output type

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Placeholder outputs are not rendered so they don't need render data.
Also, this simplifies the control flow when the last real output is
removed. The Platform::screensQueried signal won't be emitted inside a
Platform::screensQueried slot.
This commit is contained in:
Vlad Zahorodnii 2022-09-06 13:10:28 +03:00
parent 192a57e2e1
commit d8ea87a9ea
18 changed files with 104 additions and 38 deletions
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1
src/CMakeLists.txt
View file

@ -106,6 +106,7 @@ target_sources(kwin PRIVATE
osd.cpp
outline.cpp
placeholderinputeventfilter.cpp
placeholderoutput.cpp
placement.cpp
placementtracker.cpp
plugin.cpp

4
src/backends/drm/drm_backend.cpp
View file

@ -403,9 +403,9 @@ QString DrmBackend::supportInformation() const
return supportInfo;
}
Output *DrmBackend::createVirtualOutput(const QString &name, const QSize &size, double scale, VirtualOutputType type)
Output *DrmBackend::createVirtualOutput(const QString &name, const QSize &size, double scale)
{
auto output = primaryGpu()->createVirtualOutput(name, size * scale, scale, type);
auto output = primaryGpu()->createVirtualOutput(name, size * scale, scale);
Q_EMIT screensQueried();
return output;
}

2
src/backends/drm/drm_backend.h
View file

@ -60,7 +60,7 @@ public:
QVector<CompositingType> supportedCompositors() const override;
QString supportInformation() const override;
Output *createVirtualOutput(const QString &name, const QSize &size, double scale, VirtualOutputType type) override;
Output *createVirtualOutput(const QString &name, const QSize &size, double scale) override;
void removeVirtualOutput(Output *output) override;
DrmGpu *primaryGpu() const;

4
src/backends/drm/drm_gpu.cpp
View file

@ -587,9 +587,9 @@ const QVector<DrmPipeline *> DrmGpu::pipelines() const
return m_pipelines;
}
DrmVirtualOutput *DrmGpu::createVirtualOutput(const QString &name, const QSize &size, double scale, VirtualOutputType type)
DrmVirtualOutput *DrmGpu::createVirtualOutput(const QString &name, const QSize &size, double scale)
{
auto output = new DrmVirtualOutput(name, this, size, scale, type);
auto output = new DrmVirtualOutput(name, this, size, scale);
m_outputs << output;
Q_EMIT outputAdded(output);
return output;

4
src/backends/drm/drm_gpu.h
View file

@ -11,7 +11,6 @@
#define DRM_GPU_H
#include "drm_pipeline.h"
#include "drm_virtual_output.h"
#include <QPointer>
#include <QSize>
@ -42,6 +41,7 @@ class DrmBackend;
class EglGbmBackend;
class DrmAbstractOutput;
class DrmRenderBackend;
class DrmVirtualOutput;
class DrmGpu : public QObject
{
@ -74,7 +74,7 @@ public:
bool updateOutputs();
DrmVirtualOutput *createVirtualOutput(const QString &name, const QSize &size, double scale, VirtualOutputType type);
DrmVirtualOutput *createVirtualOutput(const QString &name, const QSize &size, double scale);
void removeVirtualOutput(DrmVirtualOutput *output);
DrmPipeline::Error testPendingConfiguration();

3
src/backends/drm/drm_virtual_output.cpp
View file

@ -20,7 +20,7 @@
namespace KWin
{
DrmVirtualOutput::DrmVirtualOutput(const QString &name, DrmGpu *gpu, const QSize &size, qreal scale, VirtualOutputType type)
DrmVirtualOutput::DrmVirtualOutput(const QString &name, DrmGpu *gpu, const QSize &size, qreal scale)
: DrmAbstractOutput(gpu)
, m_vsyncMonitor(SoftwareVsyncMonitor::create())
{
@ -32,7 +32,6 @@ DrmVirtualOutput::DrmVirtualOutput(const QString &name, DrmGpu *gpu, const QSize
setInformation(Information{
.name = QStringLiteral("Virtual-") + name,
.physicalSize = size,
.placeholder = type == VirtualOutputType::Placeholder,
});
setState(State{

3
src/backends/drm/drm_virtual_output.h
View file

@ -9,7 +9,6 @@
*/
#pragma once
#include "core/platform.h"
#include "drm_abstract_output.h"
#include <QObject>
@ -27,7 +26,7 @@ class DrmVirtualOutput : public DrmAbstractOutput
Q_OBJECT
public:
DrmVirtualOutput(const QString &name, DrmGpu *gpu, const QSize &size, qreal scale, VirtualOutputType type);
DrmVirtualOutput(const QString &name, DrmGpu *gpu, const QSize &size, qreal scale);
~DrmVirtualOutput() override;
bool present() override;

10
src/backends/wayland/wayland_backend.cpp
View file

@ -775,11 +775,11 @@ void WaylandBackend::createOutputs()
for (int i = 0; i < initialOutputCount(); i++) {
const QString name = QStringLiteral("WL-%1").arg(i);
createOutput(name, QSize(pixelWidth, pixelHeight), false);
createOutput(name, QSize(pixelWidth, pixelHeight));
}
}
WaylandOutput *WaylandBackend::createOutput(const QString &name, const QSize &size, bool placeholder)
WaylandOutput *WaylandBackend::createOutput(const QString &name, const QSize &size)
{
auto surface = m_compositor->createSurface(this);
if (!surface || !surface->isValid()) {
@ -799,7 +799,7 @@ WaylandOutput *WaylandBackend::createOutput(const QString &name, const QSize &si
WaylandOutput *waylandOutput = nullptr;
if (m_xdgShell && m_xdgShell->isValid()) {
waylandOutput = new XdgShellOutput(name, surface, m_xdgShell, this, m_nextId++, placeholder);
waylandOutput = new XdgShellOutput(name, surface, m_xdgShell, this, m_nextId++);
}
if (!waylandOutput) {
@ -967,9 +967,9 @@ void WaylandBackend::clearDpmsFilter()
m_dpmsFilter.reset();
}
Output *WaylandBackend::createVirtualOutput(const QString &name, const QSize &size, double scale, VirtualOutputType type)
Output *WaylandBackend::createVirtualOutput(const QString &name, const QSize &size, double scale)
{
return createOutput(name, size * scale, type == VirtualOutputType::Placeholder);
return createOutput(name, size * scale);
}
void WaylandBackend::removeVirtualOutput(Output *output)

4
src/backends/wayland/wayland_backend.h
View file

@ -298,7 +298,7 @@ public:
void createDpmsFilter();
void clearDpmsFilter();
Output *createVirtualOutput(const QString &name, const QSize &size, double scale, VirtualOutputType type) override;
Output *createVirtualOutput(const QString &name, const QSize &size, double scale) override;
void removeVirtualOutput(Output *output) override;
std::optional<DmaBufParams> testCreateDmaBuf(const QSize &size, quint32 format, const QVector<uint64_t> &modifiers) override;
@ -327,7 +327,7 @@ private:
void createOutputs();
void destroyOutputs();
WaylandOutput *createOutput(const QString &name, const QSize &size, bool placeholder);
WaylandOutput *createOutput(const QString &name, const QSize &size);
wl_display *m_display;
KWayland::Client::EventQueue *m_eventQueue;

7
src/backends/wayland/wayland_output.cpp
View file

@ -24,7 +24,7 @@ namespace Wayland
using namespace KWayland::Client;
static const int s_refreshRate = 60000; // TODO: can we get refresh rate data from Wayland host?
WaylandOutput::WaylandOutput(const QString &name, Surface *surface, WaylandBackend *backend, bool placeholder)
WaylandOutput::WaylandOutput(const QString &name, Surface *surface, WaylandBackend *backend)
: Output(backend)
, m_renderLoop(std::make_unique<RenderLoop>())
, m_surface(surface)
@ -34,7 +34,6 @@ WaylandOutput::WaylandOutput(const QString &name, Surface *surface, WaylandBacke
.name = name,
.model = name,
.capabilities = Capability::Dpms,
.placeholder = placeholder,
});
connect(surface, &Surface::frameRendered, this, &WaylandOutput::frameRendered);
@ -114,8 +113,8 @@ void WaylandOutput::updateEnabled(bool enabled)
setState(next);
}
XdgShellOutput::XdgShellOutput(const QString &name, Surface *surface, XdgShell *xdgShell, WaylandBackend *backend, int number, bool placeholder)
: WaylandOutput(name, surface, backend, placeholder)
XdgShellOutput::XdgShellOutput(const QString &name, Surface *surface, XdgShell *xdgShell, WaylandBackend *backend, int number)
: WaylandOutput(name, surface, backend)
, m_number(number)
{
m_xdgShellSurface = xdgShell->createSurface(surface, this);

4
src/backends/wayland/wayland_output.h
View file

@ -39,7 +39,7 @@ class WaylandOutput : public Output
{
Q_OBJECT
public:
WaylandOutput(const QString &name, KWayland::Client::Surface *surface, WaylandBackend *backend, bool placeholder);
WaylandOutput(const QString &name, KWayland::Client::Surface *surface, WaylandBackend *backend);
~WaylandOutput() override;
RenderLoop *renderLoop() const override;
@ -92,7 +92,7 @@ public:
XdgShellOutput(const QString &name,
KWayland::Client::Surface *surface,
KWayland::Client::XdgShell *xdgShell,
WaylandBackend *backend, int number, bool placeholder);
WaylandBackend *backend, int number);
~XdgShellOutput() override;
void lockPointer(KWayland::Client::Pointer *pointer, bool lock) override;

3
src/core/platform.cpp
View file

@ -142,12 +142,11 @@ void Platform::setReady(bool ready)
Q_EMIT readyChanged(m_ready);
}
Output *Platform::createVirtualOutput(const QString &name, const QSize &size, double scale, VirtualOutputType type)
Output *Platform::createVirtualOutput(const QString &name, const QSize &size, double scale)
{
Q_UNUSED(name);
Q_UNUSED(size);
Q_UNUSED(scale);
Q_UNUSED(type);
return nullptr;
}

7
src/core/platform.h
View file

@ -40,11 +40,6 @@ class ScreenEdges;
class OutputConfiguration;
struct DmaBufParams;
enum class VirtualOutputType {
Normal,
Placeholder,
};
class KWIN_EXPORT Outputs : public QVector<Output *>
{
public:
@ -322,7 +317,7 @@ public:
m_selectedCompositor = type;
}
virtual Output *createVirtualOutput(const QString &name, const QSize &size, qreal scaling, VirtualOutputType type);
virtual Output *createVirtualOutput(const QString &name, const QSize &size, qreal scale);
virtual void removeVirtualOutput(Output *output);
/**

42
src/placeholderoutput.cpp Normal file
View file

@ -0,0 +1,42 @@
/*
SPDX-FileCopyrightText: 2022 Vlad Zahorodnii <vlad.zahorodnii@kde.org>
SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "placeholderoutput.h"
namespace KWin
{
PlaceholderOutput::PlaceholderOutput(const QSize &size, qreal scale)
{
auto mode = std::make_shared<OutputMode>(size, 60000);
m_renderLoop = std::make_unique<RenderLoop>();
m_renderLoop->setRefreshRate(mode->refreshRate());
m_renderLoop->inhibit();
setState(State{
.scale = scale,
.modes = {mode},
.currentMode = mode,
.enabled = true,
});
setInformation(Information{
.name = QStringLiteral("Placeholder-1"),
.placeholder = true,
});
}
PlaceholderOutput::~PlaceholderOutput()
{
}
RenderLoop *PlaceholderOutput::renderLoop() const
{
return m_renderLoop.get();
}
} // namespace KWin

28
src/placeholderoutput.h Normal file
View file

@ -0,0 +1,28 @@
/*
SPDX-FileCopyrightText: 2022 Vlad Zahorodnii <vlad.zahorodnii@kde.org>
SPDX-License-Identifier: GPL-2.0-or-later
*/
#pragma once
#include "core/output.h"
namespace KWin
{
class PlaceholderOutput : public Output
{
Q_OBJECT
public:
PlaceholderOutput(const QSize &size, qreal scale = 1);
~PlaceholderOutput() override;
RenderLoop *renderLoop() const override;
private:
std::unique_ptr<RenderLoop> m_renderLoop;
};
} // namespace KWin

2
src/plugins/screencast/screencastmanager.cpp
View file

@ -110,7 +110,7 @@ void ScreencastManager::streamVirtualOutput(KWaylandServer::ScreencastStreamV1In
double scale,
KWaylandServer::ScreencastV1Interface::CursorMode mode)
{
auto output = kwinApp()->platform()->createVirtualOutput(name, size, scale, VirtualOutputType::Normal);
auto output = kwinApp()->platform()->createVirtualOutput(name, size, scale);
streamOutput(stream, output, mode);
connect(stream, &KWaylandServer::ScreencastStreamV1Interface::finished, output, [output] {
kwinApp()->platform()->removeVirtualOutput(output);

11
src/workspace.cpp
View file

@ -48,6 +48,7 @@
#include "decorations/decorationbridge.h"
#include "main.h"
#include "placeholderinputeventfilter.h"
#include "placeholderoutput.h"
#include "placementtracker.h"
#include "unmanaged.h"
#include "useractions.h"
@ -1452,8 +1453,9 @@ void Workspace::addOutput(Output *output)
Q_EMIT outputAdded(output);
if (m_placeholderOutput) {
kwinApp()->platform()->removeVirtualOutput(m_placeholderOutput);
m_placeholderOutput = nullptr;
m_outputs.removeOne(m_placeholderOutput.get());
Q_EMIT outputRemoved(m_placeholderOutput.get());
m_placeholderOutput.reset();
m_placeholderFilter.reset();
}
}
@ -1465,8 +1467,9 @@ void Workspace::removeOutput(Output *output)
}
if (m_outputs.empty()) {
// not all parts of KWin handle having no output yet. To prevent crashes, create a placeholder output
m_placeholderOutput = kwinApp()->platform()->createVirtualOutput("placeholder", output->pixelSize(), output->scale(), VirtualOutputType::Placeholder);
m_placeholderOutput->renderLoop()->inhibit();
m_placeholderOutput = std::make_unique<PlaceholderOutput>(output->pixelSize(), output->scale());
m_outputs.append(m_placeholderOutput.get());
Q_EMIT outputAdded(m_placeholderOutput.get());
// also prevent accidental inputs while the user has no screen connected
m_placeholderFilter = std::make_unique<PlaceholderInputEventFilter>();
input()->prependInputEventFilter(m_placeholderFilter.get());

3
src/workspace.h
View file

@ -76,6 +76,7 @@ class Screens;
class Activities;
#endif
class PlaceholderInputEventFilter;
class PlaceholderOutput;
class Placement;
class KWIN_EXPORT Workspace : public QObject
@ -756,7 +757,7 @@ private:
#endif
std::unique_ptr<PlacementTracker> m_placementTracker;
Output *m_placeholderOutput = nullptr;
std::unique_ptr<PlaceholderOutput> m_placeholderOutput;
std::unique_ptr<PlaceholderInputEventFilter> m_placeholderFilter;
private: