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kwin/src/decorationitem.cpp

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scene: Introduce window items Currently, dealing with sub-surfaces is very difficult due to the scene design being heavily influenced by X11 requirements. The goal of this change is to re-work scene abstractions to make improving the wayland support easier. The Item class is based on the QQuickItem class. My hope is that one day we will be able to transition to QtQuick for painting scene, but in meanwhile it makes more sense to have a minimalistic internal item class. The WindowItem class represents a window. The SurfaceItem class represents the contents of either an X11, or a Wayland, or an internal surface. The DecorationItem and the ShadowItem class represent the server-side deco and drop-shadow, respectively. At the moment, the SurfaceItem is bound to the scene window, but the long term plan is to break that connection so we could re-use the SurfaceItem for things such as software cursors and drag-and-drop additional icons. One of the responsibilities of the Item is to schedule repaints as needed. Ideally, there shouldn't be any addRepaint() calls in the core code. The Item class schedules repaints on geometry updates. In the future, it also has to request an update if its opacity or visibility changes.
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/*
Move decoration renderer to decoration item Currently, the implementation of the DecoratedClient and the decoration renderer are strongly coupled. This poses a problem with the item based design as the ultimate goal is to have scene items construct paint nodes which are then fed to the renderer. The DecorationItem has to have control over the decoration texture. Another issue is that the scene cannot smoothly cross-fade between two window states if the decoration is removed, e.g. from fullscreen mode to normal and vice versa. This change moves the decoration renderer to the decoration item. With the introduction of a generic scene texture atlas, we hope to get rid of the decoration renderer altogether.
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SPDX-FileCopyrightText: 2014 Martin Gräßlin <mgraesslin@kde.org>
scene: Introduce window items Currently, dealing with sub-surfaces is very difficult due to the scene design being heavily influenced by X11 requirements. The goal of this change is to re-work scene abstractions to make improving the wayland support easier. The Item class is based on the QQuickItem class. My hope is that one day we will be able to transition to QtQuick for painting scene, but in meanwhile it makes more sense to have a minimalistic internal item class. The WindowItem class represents a window. The SurfaceItem class represents the contents of either an X11, or a Wayland, or an internal surface. The DecorationItem and the ShadowItem class represent the server-side deco and drop-shadow, respectively. At the moment, the SurfaceItem is bound to the scene window, but the long term plan is to break that connection so we could re-use the SurfaceItem for things such as software cursors and drag-and-drop additional icons. One of the responsibilities of the Item is to schedule repaints as needed. Ideally, there shouldn't be any addRepaint() calls in the core code. The Item class schedules repaints on geometry updates. In the future, it also has to request an update if its opacity or visibility changes.
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SPDX-FileCopyrightText: 2021 Vlad Zahorodnii <vlad.zahorodnii@kde.org>
SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "decorationitem.h"
Move decoration renderer to decoration item Currently, the implementation of the DecoratedClient and the decoration renderer are strongly coupled. This poses a problem with the item based design as the ultimate goal is to have scene items construct paint nodes which are then fed to the renderer. The DecorationItem has to have control over the decoration texture. Another issue is that the scene cannot smoothly cross-fade between two window states if the decoration is removed, e.g. from fullscreen mode to normal and vice versa. This change moves the decoration renderer to the decoration item. With the introduction of a generic scene texture atlas, we hope to get rid of the decoration renderer altogether.
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#include "abstract_client.h"
#include "composite.h"
#include "decorations/decoratedclient.h"
#include "scene.h"
#include "utils.h"
scene: Introduce window items Currently, dealing with sub-surfaces is very difficult due to the scene design being heavily influenced by X11 requirements. The goal of this change is to re-work scene abstractions to make improving the wayland support easier. The Item class is based on the QQuickItem class. My hope is that one day we will be able to transition to QtQuick for painting scene, but in meanwhile it makes more sense to have a minimalistic internal item class. The WindowItem class represents a window. The SurfaceItem class represents the contents of either an X11, or a Wayland, or an internal surface. The DecorationItem and the ShadowItem class represent the server-side deco and drop-shadow, respectively. At the moment, the SurfaceItem is bound to the scene window, but the long term plan is to break that connection so we could re-use the SurfaceItem for things such as software cursors and drag-and-drop additional icons. One of the responsibilities of the Item is to schedule repaints as needed. Ideally, there shouldn't be any addRepaint() calls in the core code. The Item class schedules repaints on geometry updates. In the future, it also has to request an update if its opacity or visibility changes.
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#include <KDecoration2/Decoration>
Move decoration renderer to decoration item Currently, the implementation of the DecoratedClient and the decoration renderer are strongly coupled. This poses a problem with the item based design as the ultimate goal is to have scene items construct paint nodes which are then fed to the renderer. The DecorationItem has to have control over the decoration texture. Another issue is that the scene cannot smoothly cross-fade between two window states if the decoration is removed, e.g. from fullscreen mode to normal and vice versa. This change moves the decoration renderer to the decoration item. With the introduction of a generic scene texture atlas, we hope to get rid of the decoration renderer altogether.
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#include <KDecoration2/DecoratedClient>
#include <QPainter>
scene: Introduce window items Currently, dealing with sub-surfaces is very difficult due to the scene design being heavily influenced by X11 requirements. The goal of this change is to re-work scene abstractions to make improving the wayland support easier. The Item class is based on the QQuickItem class. My hope is that one day we will be able to transition to QtQuick for painting scene, but in meanwhile it makes more sense to have a minimalistic internal item class. The WindowItem class represents a window. The SurfaceItem class represents the contents of either an X11, or a Wayland, or an internal surface. The DecorationItem and the ShadowItem class represent the server-side deco and drop-shadow, respectively. At the moment, the SurfaceItem is bound to the scene window, but the long term plan is to break that connection so we could re-use the SurfaceItem for things such as software cursors and drag-and-drop additional icons. One of the responsibilities of the Item is to schedule repaints as needed. Ideally, there shouldn't be any addRepaint() calls in the core code. The Item class schedules repaints on geometry updates. In the future, it also has to request an update if its opacity or visibility changes.
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namespace KWin
{
Move decoration renderer to decoration item Currently, the implementation of the DecoratedClient and the decoration renderer are strongly coupled. This poses a problem with the item based design as the ultimate goal is to have scene items construct paint nodes which are then fed to the renderer. The DecorationItem has to have control over the decoration texture. Another issue is that the scene cannot smoothly cross-fade between two window states if the decoration is removed, e.g. from fullscreen mode to normal and vice versa. This change moves the decoration renderer to the decoration item. With the introduction of a generic scene texture atlas, we hope to get rid of the decoration renderer altogether.
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DecorationRenderer::DecorationRenderer(Decoration::DecoratedClientImpl *client)
: m_client(client)
, m_imageSizesDirty(true)
{
connect(client->decoration(), &KDecoration2::Decoration::damaged,
this, &DecorationRenderer::addDamage);
connect(client->client(), &AbstractClient::screenScaleChanged,
this, &DecorationRenderer::invalidate);
connect(client->decoration(), &KDecoration2::Decoration::bordersChanged,
this, &DecorationRenderer::invalidate);
connect(client->decoratedClient(), &KDecoration2::DecoratedClient::sizeChanged,
this, &DecorationRenderer::invalidate);
invalidate();
}
Decoration::DecoratedClientImpl *DecorationRenderer::client() const
{
return m_client;
}
void DecorationRenderer::invalidate()
{
addDamage(m_client->client()->rect());
m_imageSizesDirty = true;
}
QRegion DecorationRenderer::damage() const
{
return m_damage;
}
void DecorationRenderer::addDamage(const QRegion &region)
{
m_damage += region;
Run clazy with qt-keywords fixit In C++20, there will be emit() class member, which can conflict with the emit keyword. Given that, there are plans to enable QT_NO_KEYWORDS by default in the future. See also https://lists.qt-project.org/pipermail/development/2020-February/038812.html
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Q_EMIT damaged(region);
Move decoration renderer to decoration item Currently, the implementation of the DecoratedClient and the decoration renderer are strongly coupled. This poses a problem with the item based design as the ultimate goal is to have scene items construct paint nodes which are then fed to the renderer. The DecorationItem has to have control over the decoration texture. Another issue is that the scene cannot smoothly cross-fade between two window states if the decoration is removed, e.g. from fullscreen mode to normal and vice versa. This change moves the decoration renderer to the decoration item. With the introduction of a generic scene texture atlas, we hope to get rid of the decoration renderer altogether.
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}
void DecorationRenderer::resetDamage()
{
m_damage = QRegion();
}
QImage DecorationRenderer::renderToImage(const QRect &geo)
{
Q_ASSERT(m_client);
auto dpr = client()->client()->screenScale();
// Guess the pixel format of the X pixmap into which the QImage will be copied.
QImage::Format format;
const int depth = client()->client()->depth();
switch (depth) {
case 30:
format = QImage::Format_A2RGB30_Premultiplied;
break;
case 24:
case 32:
format = QImage::Format_ARGB32_Premultiplied;
break;
default:
qCCritical(KWIN_CORE) << "Unsupported client depth" << depth;
format = QImage::Format_ARGB32_Premultiplied;
break;
};
QImage image(geo.width() * dpr, geo.height() * dpr, format);
image.setDevicePixelRatio(dpr);
image.fill(Qt::transparent);
QPainter p(&image);
p.setRenderHint(QPainter::Antialiasing);
p.setWindow(QRect(geo.topLeft(), geo.size() * qPainterEffectiveDevicePixelRatio(&p)));
p.setClipRect(geo);
renderToPainter(&p, geo);
return image;
}
void DecorationRenderer::renderToPainter(QPainter *painter, const QRect &rect)
{
client()->decoration()->paint(painter, rect);
}
scene: Introduce window items Currently, dealing with sub-surfaces is very difficult due to the scene design being heavily influenced by X11 requirements. The goal of this change is to re-work scene abstractions to make improving the wayland support easier. The Item class is based on the QQuickItem class. My hope is that one day we will be able to transition to QtQuick for painting scene, but in meanwhile it makes more sense to have a minimalistic internal item class. The WindowItem class represents a window. The SurfaceItem class represents the contents of either an X11, or a Wayland, or an internal surface. The DecorationItem and the ShadowItem class represent the server-side deco and drop-shadow, respectively. At the moment, the SurfaceItem is bound to the scene window, but the long term plan is to break that connection so we could re-use the SurfaceItem for things such as software cursors and drag-and-drop additional icons. One of the responsibilities of the Item is to schedule repaints as needed. Ideally, there shouldn't be any addRepaint() calls in the core code. The Item class schedules repaints on geometry updates. In the future, it also has to request an update if its opacity or visibility changes.
2021-02-04 09:07:20 +00:00
DecorationItem::DecorationItem(KDecoration2::Decoration *decoration, Scene::Window *window, Item *parent)
: Item(window, parent)
{
Move decoration renderer to decoration item Currently, the implementation of the DecoratedClient and the decoration renderer are strongly coupled. This poses a problem with the item based design as the ultimate goal is to have scene items construct paint nodes which are then fed to the renderer. The DecorationItem has to have control over the decoration texture. Another issue is that the scene cannot smoothly cross-fade between two window states if the decoration is removed, e.g. from fullscreen mode to normal and vice versa. This change moves the decoration renderer to the decoration item. With the introduction of a generic scene texture atlas, we hope to get rid of the decoration renderer altogether.
2021-04-26 16:38:40 +00:00
AbstractClient *client = qobject_cast<AbstractClient *>(window->window());
m_renderer.reset(Compositor::self()->scene()->createDecorationRenderer(client->decoratedClient()));
scene: Introduce window items Currently, dealing with sub-surfaces is very difficult due to the scene design being heavily influenced by X11 requirements. The goal of this change is to re-work scene abstractions to make improving the wayland support easier. The Item class is based on the QQuickItem class. My hope is that one day we will be able to transition to QtQuick for painting scene, but in meanwhile it makes more sense to have a minimalistic internal item class. The WindowItem class represents a window. The SurfaceItem class represents the contents of either an X11, or a Wayland, or an internal surface. The DecorationItem and the ShadowItem class represent the server-side deco and drop-shadow, respectively. At the moment, the SurfaceItem is bound to the scene window, but the long term plan is to break that connection so we could re-use the SurfaceItem for things such as software cursors and drag-and-drop additional icons. One of the responsibilities of the Item is to schedule repaints as needed. Ideally, there shouldn't be any addRepaint() calls in the core code. The Item class schedules repaints on geometry updates. In the future, it also has to request an update if its opacity or visibility changes.
2021-02-04 09:07:20 +00:00
Move decoration renderer to decoration item Currently, the implementation of the DecoratedClient and the decoration renderer are strongly coupled. This poses a problem with the item based design as the ultimate goal is to have scene items construct paint nodes which are then fed to the renderer. The DecorationItem has to have control over the decoration texture. Another issue is that the scene cannot smoothly cross-fade between two window states if the decoration is removed, e.g. from fullscreen mode to normal and vice versa. This change moves the decoration renderer to the decoration item. With the introduction of a generic scene texture atlas, we hope to get rid of the decoration renderer altogether.
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connect(client, &Toplevel::frameGeometryChanged,
scene: Introduce window items Currently, dealing with sub-surfaces is very difficult due to the scene design being heavily influenced by X11 requirements. The goal of this change is to re-work scene abstractions to make improving the wayland support easier. The Item class is based on the QQuickItem class. My hope is that one day we will be able to transition to QtQuick for painting scene, but in meanwhile it makes more sense to have a minimalistic internal item class. The WindowItem class represents a window. The SurfaceItem class represents the contents of either an X11, or a Wayland, or an internal surface. The DecorationItem and the ShadowItem class represent the server-side deco and drop-shadow, respectively. At the moment, the SurfaceItem is bound to the scene window, but the long term plan is to break that connection so we could re-use the SurfaceItem for things such as software cursors and drag-and-drop additional icons. One of the responsibilities of the Item is to schedule repaints as needed. Ideally, there shouldn't be any addRepaint() calls in the core code. The Item class schedules repaints on geometry updates. In the future, it also has to request an update if its opacity or visibility changes.
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this, &DecorationItem::handleFrameGeometryChanged);
Move decoration renderer to decoration item Currently, the implementation of the DecoratedClient and the decoration renderer are strongly coupled. This poses a problem with the item based design as the ultimate goal is to have scene items construct paint nodes which are then fed to the renderer. The DecorationItem has to have control over the decoration texture. Another issue is that the scene cannot smoothly cross-fade between two window states if the decoration is removed, e.g. from fullscreen mode to normal and vice versa. This change moves the decoration renderer to the decoration item. With the introduction of a generic scene texture atlas, we hope to get rid of the decoration renderer altogether.
2021-04-26 16:38:40 +00:00
connect(client, &Toplevel::screenScaleChanged,
scene: Introduce window items Currently, dealing with sub-surfaces is very difficult due to the scene design being heavily influenced by X11 requirements. The goal of this change is to re-work scene abstractions to make improving the wayland support easier. The Item class is based on the QQuickItem class. My hope is that one day we will be able to transition to QtQuick for painting scene, but in meanwhile it makes more sense to have a minimalistic internal item class. The WindowItem class represents a window. The SurfaceItem class represents the contents of either an X11, or a Wayland, or an internal surface. The DecorationItem and the ShadowItem class represent the server-side deco and drop-shadow, respectively. At the moment, the SurfaceItem is bound to the scene window, but the long term plan is to break that connection so we could re-use the SurfaceItem for things such as software cursors and drag-and-drop additional icons. One of the responsibilities of the Item is to schedule repaints as needed. Ideally, there shouldn't be any addRepaint() calls in the core code. The Item class schedules repaints on geometry updates. In the future, it also has to request an update if its opacity or visibility changes.
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this, &DecorationItem::discardQuads);
connect(decoration, &KDecoration2::Decoration::bordersChanged,
this, &DecorationItem::discardQuads);
Move decoration renderer to decoration item Currently, the implementation of the DecoratedClient and the decoration renderer are strongly coupled. This poses a problem with the item based design as the ultimate goal is to have scene items construct paint nodes which are then fed to the renderer. The DecorationItem has to have control over the decoration texture. Another issue is that the scene cannot smoothly cross-fade between two window states if the decoration is removed, e.g. from fullscreen mode to normal and vice versa. This change moves the decoration renderer to the decoration item. With the introduction of a generic scene texture atlas, we hope to get rid of the decoration renderer altogether.
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connect(renderer(), &DecorationRenderer::damaged,
this, &DecorationItem::scheduleRepaint);
// If the decoration is about to be destroyed, render the decoration for the last time.
connect(client, &Toplevel::markedAsZombie, this, &DecorationItem::preprocess);
setSize(client->size());
}
void DecorationItem::preprocess()
{
const QRegion damage = m_renderer->damage();
if (!damage.isEmpty()) {
m_renderer->render(damage);
m_renderer->resetDamage();
}
scene: Introduce window items Currently, dealing with sub-surfaces is very difficult due to the scene design being heavily influenced by X11 requirements. The goal of this change is to re-work scene abstractions to make improving the wayland support easier. The Item class is based on the QQuickItem class. My hope is that one day we will be able to transition to QtQuick for painting scene, but in meanwhile it makes more sense to have a minimalistic internal item class. The WindowItem class represents a window. The SurfaceItem class represents the contents of either an X11, or a Wayland, or an internal surface. The DecorationItem and the ShadowItem class represent the server-side deco and drop-shadow, respectively. At the moment, the SurfaceItem is bound to the scene window, but the long term plan is to break that connection so we could re-use the SurfaceItem for things such as software cursors and drag-and-drop additional icons. One of the responsibilities of the Item is to schedule repaints as needed. Ideally, there shouldn't be any addRepaint() calls in the core code. The Item class schedules repaints on geometry updates. In the future, it also has to request an update if its opacity or visibility changes.
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}
void DecorationItem::handleFrameGeometryChanged()
{
setSize(window()->size());
}
Move decoration renderer to decoration item Currently, the implementation of the DecoratedClient and the decoration renderer are strongly coupled. This poses a problem with the item based design as the ultimate goal is to have scene items construct paint nodes which are then fed to the renderer. The DecorationItem has to have control over the decoration texture. Another issue is that the scene cannot smoothly cross-fade between two window states if the decoration is removed, e.g. from fullscreen mode to normal and vice versa. This change moves the decoration renderer to the decoration item. With the introduction of a generic scene texture atlas, we hope to get rid of the decoration renderer altogether.
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DecorationRenderer *DecorationItem::renderer() const
{
return m_renderer.data();
}
scene: Introduce window items Currently, dealing with sub-surfaces is very difficult due to the scene design being heavily influenced by X11 requirements. The goal of this change is to re-work scene abstractions to make improving the wayland support easier. The Item class is based on the QQuickItem class. My hope is that one day we will be able to transition to QtQuick for painting scene, but in meanwhile it makes more sense to have a minimalistic internal item class. The WindowItem class represents a window. The SurfaceItem class represents the contents of either an X11, or a Wayland, or an internal surface. The DecorationItem and the ShadowItem class represent the server-side deco and drop-shadow, respectively. At the moment, the SurfaceItem is bound to the scene window, but the long term plan is to break that connection so we could re-use the SurfaceItem for things such as software cursors and drag-and-drop additional icons. One of the responsibilities of the Item is to schedule repaints as needed. Ideally, there shouldn't be any addRepaint() calls in the core code. The Item class schedules repaints on geometry updates. In the future, it also has to request an update if its opacity or visibility changes.
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} // namespace KWin
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