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kwin/effects/desktopgrid/desktopgrid.cpp
Vlad Zahorodnii 9f2cb0ae1b Provide expected presentation time to effects 
Effects are given the interval between two consecutive frames. The main
flaw of this approach is that if the Compositor transitions from the idle
state to "active" state, i.e. when there is something to repaint,
effects may see a very large interval between the last painted frame and
the current. In order to address this issue, the Scene invalidates the
timer that is used to measure time between consecutive frames before the
Compositor is about to become idle.

While this works perfectly fine with Xinerama-style rendering, with per
screen rendering, determining whether the compositor is about to idle is
rather a tedious task mostly because a single output can't be used for
the test.

Furthermore, since the Compositor schedules pointless repaints just to
ensure that it's idle, it might take several attempts to figure out
whether the scene timer must be invalidated if you use (true) per screen
rendering.

Ideally, all effects should use a timeline helper that is aware of the
underlying render loop and its timings. However, this option is off the
table because it will involve a lot of work to implement it.

Alternative and much simpler option is to pass the expected presentation
time to effects rather than time between consecutive frames. This means
that effects are responsible for determining how much animation timelines
have to be advanced. Typically, an effect would have to store the
presentation timestamp provided in either prePaint{Screen,Window} and
use it in the subsequent prePaint{Screen,Window} call to estimate the
amount of time passed between the next and the last frames.

Unfortunately, this is an API incompatible change. However, it shouldn't
take a lot of work to port third-party binary effects, which don't use the
AnimationEffect class, to the new API. On the bright side, we no longer
need to be concerned about the Compositor getting idle.

We do still try to determine whether the Compositor is about to idle,
primarily, because the OpenGL render backend swaps buffers on present,
but that will change with the ongoing compositing timing rework.
2020-12-10 07:14:42 +00:00

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/*
KWin - the KDE window manager
This file is part of the KDE project.
SPDX-FileCopyrightText: 2007 Lubos Lunak <l.lunak@kde.org>
SPDX-FileCopyrightText: 2008 Lucas Murray <lmurray@undefinedfire.com>
SPDX-FileCopyrightText: 2009 Martin Gräßlin <mgraesslin@kde.org>
SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "desktopgrid.h"
// KConfigSkeleton
#include "desktopgridconfig.h"
#include "../presentwindows/presentwindows_proxy.h"
#include "../effect_builtins.h"
#include <QAction>
#include <QApplication>
#include <KGlobalAccel>
#include <KLocalizedString>
#include <netwm_def.h>
#include <QEvent>
#include <QMouseEvent>
#include <QTimer>
#include <QVector2D>
#include <QMatrix4x4>
#include <QQuickItem>
#include <QQmlContext>
#include <KWaylandServer/surface_interface.h>
#include <cmath>
namespace KWin
{
// WARNING, TODO: This effect relies on the desktop layout being EWMH-compliant.
DesktopGridEffect::DesktopGridEffect()
: activated(false)
, timeline()
, keyboardGrab(false)
, wasWindowMove(false)
, wasWindowCopy(false)
, wasDesktopMove(false)
, isValidMove(false)
, windowMove(nullptr)
, windowMoveDiff()
, windowMoveElevateTimer(new QTimer(this))
, lastPresentTime(std::chrono::milliseconds::zero())
, gridSize()
, orientation(Qt::Horizontal)
, activeCell(1, 1)
, scale()
, unscaledBorder()
, scaledSize()
, scaledOffset()
, m_proxy(nullptr)
, m_activateAction(new QAction(this))
{
initConfig<DesktopGridConfig>();
// Load shortcuts
QAction* a = m_activateAction;
a->setObjectName(QStringLiteral("ShowDesktopGrid"));
a->setText(i18n("Show Desktop Grid"));
KGlobalAccel::self()->setDefaultShortcut(a, QList<QKeySequence>() << Qt::CTRL + Qt::Key_F8);
KGlobalAccel::self()->setShortcut(a, QList<QKeySequence>() << Qt::CTRL + Qt::Key_F8);
shortcut = KGlobalAccel::self()->shortcut(a);
effects->registerGlobalShortcut(Qt::CTRL + Qt::Key_F8, a);
effects->registerTouchpadSwipeShortcut(SwipeDirection::Up, a);
connect(a, &QAction::triggered, this, &DesktopGridEffect::toggle);
connect(KGlobalAccel::self(), &KGlobalAccel::globalShortcutChanged, this, &DesktopGridEffect::globalShortcutChanged);
connect(effects, &EffectsHandler::windowAdded, this, &DesktopGridEffect::slotWindowAdded);
connect(effects, &EffectsHandler::windowClosed, this, &DesktopGridEffect::slotWindowClosed);
connect(effects, &EffectsHandler::windowDeleted, this, &DesktopGridEffect::slotWindowDeleted);
connect(effects, &EffectsHandler::numberDesktopsChanged, this, &DesktopGridEffect::slotNumberDesktopsChanged);
connect(effects, &EffectsHandler::windowFrameGeometryChanged, this, &DesktopGridEffect::slotWindowFrameGeometryChanged);
connect(effects, &EffectsHandler::numberScreensChanged, this, &DesktopGridEffect::setup);
connect(effects, &EffectsHandler::screenAboutToLock, this, [this]() {
setActive(false);
windowMoveElevateTimer->stop();
if (keyboardGrab) {
effects->ungrabKeyboard();
keyboardGrab = false;
}
});
windowMoveElevateTimer->setInterval(QApplication::startDragTime());
windowMoveElevateTimer->setSingleShot(true);
connect(windowMoveElevateTimer, &QTimer::timeout, this, [this]() {
effects->setElevatedWindow(windowMove, true);
wasWindowMove = true;
});
// Load all other configuration details
reconfigure(ReconfigureAll);
}
DesktopGridEffect::~DesktopGridEffect()
{
}
void DesktopGridEffect::reconfigure(ReconfigureFlags)
{
DesktopGridConfig::self()->read();
foreach (ElectricBorder border, borderActivate) {
effects->unreserveElectricBorder(border, this);
}
borderActivate.clear();
foreach (int i, DesktopGridConfig::borderActivate()) {
borderActivate.append(ElectricBorder(i));
effects->reserveElectricBorder(ElectricBorder(i), this);
}
// TODO: rename zoomDuration to duration
zoomDuration = animationTime(DesktopGridConfig::zoomDuration() != 0 ? DesktopGridConfig::zoomDuration() : 300);
timeline.setEasingCurve(QEasingCurve::InOutSine);
timeline.setDuration(zoomDuration);
border = DesktopGridConfig::borderWidth();
desktopNameAlignment = Qt::Alignment(DesktopGridConfig::desktopNameAlignment());
layoutMode = DesktopGridConfig::layoutMode();
customLayoutRows = DesktopGridConfig::customLayoutRows();
clickBehavior = DesktopGridConfig::clickBehavior();
// deactivate and activate all touch border
const QVector<ElectricBorder> relevantBorders{ElectricLeft, ElectricTop, ElectricRight, ElectricBottom};
for (auto e : relevantBorders) {
effects->unregisterTouchBorder(e, m_activateAction);
}
const auto touchBorders = DesktopGridConfig::touchBorderActivate();
for (int i : touchBorders) {
if (!relevantBorders.contains(ElectricBorder(i))) {
continue;
}
effects->registerTouchBorder(ElectricBorder(i), m_activateAction);
}
}
//-----------------------------------------------------------------------------
// Screen painting
void DesktopGridEffect::prePaintScreen(ScreenPrePaintData& data, std::chrono::milliseconds presentTime)
{
// The animation code assumes that the time diff cannot be 0, let's work around it.
int time;
if (lastPresentTime.count()) {
time = std::max(1, int((presentTime - lastPresentTime).count()));
} else {
time = 1;
}
lastPresentTime = presentTime;
if (timeline.currentValue() != 0 || activated || (isUsingPresentWindows() && isMotionManagerMovingWindows())) {
if (activated)
timeline.setCurrentTime(timeline.currentTime() + time);
else
timeline.setCurrentTime(timeline.currentTime() - time);
for (int i = 0; i < effects->numberOfDesktops(); i++) {
if (i == highlightedDesktop - 1)
hoverTimeline[i]->setCurrentTime(hoverTimeline[i]->currentTime() + time);
else
hoverTimeline[i]->setCurrentTime(hoverTimeline[i]->currentTime() - time);
}
if (isUsingPresentWindows()) {
QList<WindowMotionManager>::iterator i;
for (i = m_managers.begin(); i != m_managers.end(); ++i)
(*i).calculate(time);
}
// PAINT_SCREEN_BACKGROUND_FIRST is needed because screen will be actually painted more than once,
// so with normal screen painting second screen paint would erase parts of the first paint
if (timeline.currentValue() != 0 || (isUsingPresentWindows() && isMotionManagerMovingWindows()))
data.mask |= PAINT_SCREEN_TRANSFORMED | PAINT_SCREEN_BACKGROUND_FIRST;
if (!activated && timeline.currentValue() == 0 && !(isUsingPresentWindows() && isMotionManagerMovingWindows()))
finish();
}
for (auto const &w : effects->stackingOrder()) {
w->setData(WindowForceBlurRole, QVariant(true));
}
effects->prePaintScreen(data, presentTime);
}
void DesktopGridEffect::paintScreen(int mask, const QRegion &region, ScreenPaintData& data)
{
if (timeline.currentValue() == 0 && !isUsingPresentWindows()) {
effects->paintScreen(mask, region, data);
return;
}
for (int desktop = 1; desktop <= effects->numberOfDesktops(); desktop++) {
ScreenPaintData d = data;
paintingDesktop = desktop;
effects->paintScreen(mask, region, d);
}
// paint the add desktop button
for (EffectQuickScene *view : m_desktopButtons) {
view->rootItem()->setOpacity(timeline.currentValue());
effects->renderEffectQuickView(view);
}
if (isUsingPresentWindows() && windowMove && wasWindowMove) {
// the moving window has to be painted on top of all desktops
QPoint diff = cursorPos() - m_windowMoveStartPoint;
QRect geo = m_windowMoveGeometry.translated(diff);
WindowPaintData d(windowMove, data.projectionMatrix());
d *= QVector2D((qreal)geo.width() / (qreal)windowMove->width(), (qreal)geo.height() / (qreal)windowMove->height());
d += QPoint(geo.left() - windowMove->x(), geo.top() - windowMove->y());
effects->drawWindow(windowMove, PAINT_WINDOW_TRANSFORMED | PAINT_WINDOW_LANCZOS, infiniteRegion(), d);
}
if (desktopNameAlignment) {
for (int screen = 0; screen < effects->numScreens(); screen++) {
QRect screenGeom = effects->clientArea(ScreenArea, screen, 0);
int desktop = 1;
foreach (EffectFrame * frame, desktopNames) {
QPointF posTL(scalePos(screenGeom.topLeft(), desktop, screen));
QPointF posBR(scalePos(screenGeom.bottomRight(), desktop, screen));
QRect textArea(posTL.x(), posTL.y(), posBR.x() - posTL.x(), posBR.y() - posTL.y());
textArea.adjust(textArea.width() / 10, textArea.height() / 10,
-textArea.width() / 10, -textArea.height() / 10);
int x, y;
if (desktopNameAlignment & Qt::AlignLeft)
x = textArea.x();
else if (desktopNameAlignment & Qt::AlignRight)
x = textArea.right();
else
x = textArea.center().x();
if (desktopNameAlignment & Qt::AlignTop)
y = textArea.y();
else if (desktopNameAlignment & Qt::AlignBottom)
y = textArea.bottom();
else
y = textArea.center().y();
frame->setPosition(QPoint(x, y));
frame->render(region, timeline.currentValue(), 0.7);
++desktop;
}
}
}
}
void DesktopGridEffect::postPaintScreen()
{
bool resetLastPresentTime = true;
if (activated ? timeline.currentValue() != 1 : timeline.currentValue() != 0) {
effects->addRepaintFull(); // Repaint during zoom
resetLastPresentTime = false;
}
if (isUsingPresentWindows() && isMotionManagerMovingWindows()) {
effects->addRepaintFull();
resetLastPresentTime = false;
}
if (activated) {
for (int i = 0; i < effects->numberOfDesktops(); i++) {
if (hoverTimeline[i]->currentValue() != 0.0 && hoverTimeline[i]->currentValue() != 1.0) {
// Repaint during soft highlighting
effects->addRepaintFull();
resetLastPresentTime = false;
break;
}
}
}
if (resetLastPresentTime) {
lastPresentTime = std::chrono::milliseconds::zero();
}
for (auto &w : effects->stackingOrder()) {
w->setData(WindowForceBlurRole, QVariant());
}
effects->postPaintScreen();
}
//-----------------------------------------------------------------------------
// Window painting
void DesktopGridEffect::prePaintWindow(EffectWindow* w, WindowPrePaintData& data, std::chrono::milliseconds presentTime)
{
if (timeline.currentValue() != 0 || (isUsingPresentWindows() && isMotionManagerMovingWindows())) {
if (w->isOnDesktop(paintingDesktop)) {
w->enablePainting(EffectWindow::PAINT_DISABLED_BY_DESKTOP);
if (w->isMinimized() && isUsingPresentWindows())
w->enablePainting(EffectWindow::PAINT_DISABLED_BY_MINIMIZE);
data.mask |= PAINT_WINDOW_TRANSFORMED;
// Split windows at screen edges
for (int screen = 0; screen < effects->numScreens(); screen++) {
QRect screenGeom = effects->clientArea(ScreenArea, screen, 0);
if (w->x() < screenGeom.x())
data.quads = data.quads.splitAtX(screenGeom.x() - w->x());
if (w->x() + w->width() > screenGeom.x() + screenGeom.width())
data.quads = data.quads.splitAtX(screenGeom.x() + screenGeom.width() - w->x());
if (w->y() < screenGeom.y())
data.quads = data.quads.splitAtY(screenGeom.y() - w->y());
if (w->y() + w->height() > screenGeom.y() + screenGeom.height())
data.quads = data.quads.splitAtY(screenGeom.y() + screenGeom.height() - w->y());
}
if (windowMove && wasWindowMove && windowMove->findModal() == w)
w->disablePainting(EffectWindow::PAINT_DISABLED_BY_DESKTOP);
} else
w->disablePainting(EffectWindow::PAINT_DISABLED_BY_DESKTOP);
}
effects->prePaintWindow(w, data, presentTime);
}
void DesktopGridEffect::paintWindow(EffectWindow* w, int mask, QRegion region, WindowPaintData& data)
{
if (timeline.currentValue() != 0 || (isUsingPresentWindows() && isMotionManagerMovingWindows())) {
if (isUsingPresentWindows() && w == windowMove && wasWindowMove &&
((!wasWindowCopy && sourceDesktop == paintingDesktop) ||
(sourceDesktop != highlightedDesktop && highlightedDesktop == paintingDesktop))) {
return; // will be painted on top of all other windows
}
qreal xScale = data.xScale();
qreal yScale = data.yScale();
data.multiplyBrightness(1.0 - (0.3 * (1.0 - hoverTimeline[paintingDesktop - 1]->currentValue())));
for (int screen = 0; screen < effects->numScreens(); screen++) {
QRect screenGeom = effects->clientArea(ScreenArea, screen, 0);
QRectF transformedGeo = w->geometry();
// Display all quads on the same screen on the same pass
WindowQuadList screenQuads;
bool quadsAdded = false;
if (isUsingPresentWindows()) {
WindowMotionManager& manager = m_managers[(paintingDesktop-1)*(effects->numScreens())+screen ];
if (manager.isManaging(w)) {
foreach (const WindowQuad & quad, data.quads)
screenQuads.append(quad);
transformedGeo = manager.transformedGeometry(w);
quadsAdded = true;
if (!manager.areWindowsMoving() && timeline.currentValue() == 1.0)
mask |= PAINT_WINDOW_LANCZOS;
} else if (w->screen() != screen)
quadsAdded = true; // we don't want parts of overlapping windows on the other screen
if (w->isDesktop())
quadsAdded = false;
}
if (!quadsAdded) {
foreach (const WindowQuad & quad, data.quads) {
QRect quadRect(
w->x() + quad.left(), w->y() + quad.top(),
quad.right() - quad.left(), quad.bottom() - quad.top()
);
if (quadRect.intersects(screenGeom))
screenQuads.append(quad);
}
}
if (screenQuads.isEmpty())
continue; // Nothing is being displayed, don't bother
WindowPaintData d = data;
d.quads = screenQuads;
QPointF newPos = scalePos(transformedGeo.topLeft().toPoint(), paintingDesktop, screen);
double progress = timeline.currentValue();
d.setXScale(interpolate(1, xScale * scale[screen] * (float)transformedGeo.width() / (float)w->geometry().width(), progress));
d.setYScale(interpolate(1, yScale * scale[screen] * (float)transformedGeo.height() / (float)w->geometry().height(), progress));
d += QPoint(qRound(newPos.x() - w->x()), qRound(newPos.y() - w->y()));
if (isUsingPresentWindows() && (w->isDock() || w->isSkipSwitcher())) {
// fade out panels if present windows is used
d.multiplyOpacity((1.0 - timeline.currentValue()));
}
if (isUsingPresentWindows() && w->isMinimized()) {
d.multiplyOpacity(timeline.currentValue());
}
if (effects->compositingType() == XRenderCompositing) {
// More exact clipping as XRender displays the entire window instead of just the quad
QPointF screenPosF = scalePos(screenGeom.topLeft(), paintingDesktop).toPoint();
QPoint screenPos(
qRound(screenPosF.x()),
qRound(screenPosF.y())
);
QSize screenSize(
qRound(interpolate(screenGeom.width(), scaledSize[screen].width(), progress)),
qRound(interpolate(screenGeom.height(), scaledSize[screen].height(), progress))
);
PaintClipper pc(effects->clientArea(ScreenArea, screen, 0) & QRect(screenPos, screenSize));
effects->paintWindow(w, mask, region, d);
} else {
if (w->isDesktop() && timeline.currentValue() == 1.0) {
// desktop windows are not in a motion manager and can always be rendered with
// lanczos sampling except for animations
mask |= PAINT_WINDOW_LANCZOS;
}
effects->paintWindow(w, mask, effects->clientArea(ScreenArea, screen, 0), d);
}
}
} else
effects->paintWindow(w, mask, region, data);
}
//-----------------------------------------------------------------------------
// User interaction
void DesktopGridEffect::slotWindowAdded(EffectWindow* w)
{
if (!activated)
return;
if (isUsingPresentWindows()) {
if (!isRelevantWithPresentWindows(w))
return; // don't add
foreach (const int i, desktopList(w)) {
WindowMotionManager& manager = m_managers[ i*effects->numScreens()+w->screen()];
manager.manage(w);
m_proxy->calculateWindowTransformations(manager.managedWindows(), w->screen(), manager);
}
}
effects->addRepaintFull();
}
void DesktopGridEffect::slotWindowClosed(EffectWindow* w)
{
if (!activated && timeline.currentValue() == 0)
return;
if (w == windowMove) {
effects->setElevatedWindow(windowMove, false);
windowMove = nullptr;
}
if (isUsingPresentWindows()) {
foreach (const int i, desktopList(w)) {
WindowMotionManager& manager = m_managers[i*effects->numScreens()+w->screen()];
manager.unmanage(w);
m_proxy->calculateWindowTransformations(manager.managedWindows(), w->screen(), manager);
}
}
effects->addRepaintFull();
}
void DesktopGridEffect::slotWindowDeleted(EffectWindow* w)
{
if (w == windowMove)
windowMove = nullptr;
if (isUsingPresentWindows()) {
for (QList<WindowMotionManager>::iterator it = m_managers.begin(),
end = m_managers.end(); it != end; ++it) {
it->unmanage(w);
}
}
}
void DesktopGridEffect::slotWindowFrameGeometryChanged(EffectWindow* w, const QRect& old)
{
Q_UNUSED(old)
if (!activated)
return;
if (w == windowMove && wasWindowMove)
return;
if (isUsingPresentWindows()) {
foreach (const int i, desktopList(w)) {
WindowMotionManager& manager = m_managers[i*effects->numScreens()+w->screen()];
m_proxy->calculateWindowTransformations(manager.managedWindows(), w->screen(), manager);
}
}
}
void DesktopGridEffect::windowInputMouseEvent(QEvent* e)
{
if ((e->type() != QEvent::MouseMove
&& e->type() != QEvent::MouseButtonPress
&& e->type() != QEvent::MouseButtonRelease)
|| timeline.currentValue() != 1) // Block user input during animations
return;
QMouseEvent* me = static_cast< QMouseEvent* >(e);
if (!(wasWindowMove || wasDesktopMove)) {
for (EffectQuickScene *view : m_desktopButtons) {
view->forwardMouseEvent(me);
if (e->isAccepted()) {
return;
}
}
}
if (e->type() == QEvent::MouseMove) {
int d = posToDesktop(me->pos());
if (windowMove != nullptr &&
(me->pos() - dragStartPos).manhattanLength() > QApplication::startDragDistance()) {
// Handle window moving
if (windowMoveElevateTimer->isActive()) { // Window started moving, but is not elevated yet!
windowMoveElevateTimer->stop();
effects->setElevatedWindow(windowMove, true);
}
if (!wasWindowMove) { // Activate on move
if (isUsingPresentWindows()) {
foreach (const int i, desktopList(windowMove)) {
WindowMotionManager& manager = m_managers[(i)*(effects->numScreens()) + windowMove->screen()];
if ((i + 1) == sourceDesktop) {
const QRectF transformedGeo = manager.transformedGeometry(windowMove);
const QPointF pos = scalePos(transformedGeo.topLeft().toPoint(), sourceDesktop, windowMove->screen());
const QSize size(scale[windowMove->screen()] *(float)transformedGeo.width(),
scale[windowMove->screen()] *(float)transformedGeo.height());
m_windowMoveGeometry = QRect(pos.toPoint(), size);
m_windowMoveStartPoint = me->pos();
}
manager.unmanage(windowMove);
if (EffectWindow* modal = windowMove->findModal()) {
if (manager.isManaging(modal))
manager.unmanage(modal);
}
m_proxy->calculateWindowTransformations(manager.managedWindows(), windowMove->screen(), manager);
}
wasWindowMove = true;
}
}
if (windowMove->isMovable() && !isUsingPresentWindows()) {
wasWindowMove = true;
int screen = effects->screenNumber(me->pos());
effects->moveWindow(windowMove, unscalePos(me->pos(), nullptr) + windowMoveDiff, true, 1.0 / scale[screen]);
}
if (wasWindowMove) {
if (effects->waylandDisplay() && (me->modifiers() & Qt::ControlModifier)) {
wasWindowCopy = true;
effects->defineCursor(Qt::DragCopyCursor);
} else {
wasWindowCopy = false;
effects->defineCursor(Qt::ClosedHandCursor);
}
if (d != highlightedDesktop) {
auto desktops = windowMove->desktops();
if (!desktops.contains(d)) {
desktops.append(d);
}
if (highlightedDesktop != sourceDesktop || !wasWindowCopy) {
desktops.removeOne(highlightedDesktop);
}
effects->windowToDesktops(windowMove, desktops);
const int screen = effects->screenNumber(me->pos());
if (screen != windowMove->screen())
effects->windowToScreen(windowMove, screen);
}
effects->addRepaintFull();
}
} else if ((me->buttons() & Qt::LeftButton) && !wasDesktopMove &&
(me->pos() - dragStartPos).manhattanLength() > QApplication::startDragDistance()) {
wasDesktopMove = true;
effects->defineCursor(Qt::ClosedHandCursor);
}
if (d != highlightedDesktop) { // Highlight desktop
if ((me->buttons() & Qt::LeftButton) && isValidMove && !wasWindowMove && d <= effects->numberOfDesktops()) {
EffectWindowList windows = effects->stackingOrder();
EffectWindowList stack[3];
for (EffectWindowList::const_iterator it = windows.constBegin(),
end = windows.constEnd(); it != end; ++it) {
EffectWindow *w = const_cast<EffectWindow*>(*it); // we're not really touching it here but below
if (w->isOnAllDesktops())
continue;
if (w->isOnDesktop(highlightedDesktop))
stack[0] << w;
if (w->isOnDesktop(d))
stack[1] << w;
if (w->isOnDesktop(m_originalMovingDesktop))
stack[2] << w;
}
const int desks[4] = {highlightedDesktop, d, m_originalMovingDesktop, highlightedDesktop};
for (int i = 0; i < 3; ++i ) {
if (desks[i] == desks[i+1])
continue;
foreach (EffectWindow *w, stack[i]) {
auto desktops = w->desktops();
desktops.removeOne(desks[i]);
desktops.append(desks[i+1]);
effects->windowToDesktops(w, desktops);
if (isUsingPresentWindows()) {
m_managers[(desks[i]-1)*(effects->numScreens()) + w->screen()].unmanage(w);
m_managers[(desks[i+1]-1)*(effects->numScreens()) + w->screen()].manage(w);
}
}
}
if (isUsingPresentWindows()) {
for (int i = 0; i < effects->numScreens(); i++) {
for (int j = 0; j < 3; ++j) {
WindowMotionManager& manager = m_managers[(desks[j]-1)*(effects->numScreens()) + i ];
m_proxy->calculateWindowTransformations(manager.managedWindows(), i, manager);
}
}
effects->addRepaintFull();
}
}
setHighlightedDesktop(d);
}
}
if (e->type() == QEvent::MouseButtonPress) {
if (me->buttons() == Qt::LeftButton) {
isValidMove = true;
dragStartPos = me->pos();
sourceDesktop = posToDesktop(me->pos());
bool isDesktop = (me->modifiers() & Qt::ShiftModifier);
EffectWindow* w = isDesktop ? nullptr : windowAt(me->pos());
if (w != nullptr)
isDesktop = w->isDesktop();
if (isDesktop)
m_originalMovingDesktop = posToDesktop(me->pos());
else
m_originalMovingDesktop = 0;
if (w != nullptr && !w->isDesktop() && (w->isMovable() || w->isMovableAcrossScreens() || isUsingPresentWindows())) {
// Prepare it for moving
windowMoveDiff = w->pos() - unscalePos(me->pos(), nullptr);
windowMove = w;
windowMoveElevateTimer->start();
}
} else if ((me->buttons() == Qt::MiddleButton || me->buttons() == Qt::RightButton) && windowMove == nullptr) {
EffectWindow* w = windowAt(me->pos());
if (w && w->isDesktop()) {
w = nullptr;
}
if (w != nullptr) {
const int desktop = posToDesktop(me->pos());
if (w->isOnAllDesktops()) {
effects->windowToDesktop(w, desktop);
} else {
effects->windowToDesktop(w, NET::OnAllDesktops);
}
const bool isOnAllDesktops = w->isOnAllDesktops();
if (isUsingPresentWindows()) {
for (int i = 0; i < effects->numberOfDesktops(); i++) {
if (i != desktop - 1) {
WindowMotionManager& manager = m_managers[ i*effects->numScreens() + w->screen()];
if (isOnAllDesktops)
manager.manage(w);
else
manager.unmanage(w);
m_proxy->calculateWindowTransformations(manager.managedWindows(), w->screen(), manager);
}
}
}
effects->addRepaintFull();
}
}
}
if (e->type() == QEvent::MouseButtonRelease && me->button() == Qt::LeftButton) {
isValidMove = false;
if (windowMove) {
if (windowMoveElevateTimer->isActive()) {
// no need to elevate window, it was just a click
windowMoveElevateTimer->stop();
}
if (clickBehavior == SwitchDesktopAndActivateWindow || wasWindowMove) {
// activate window if relevant config is set or window was moved
effects->activateWindow(windowMove);
}
}
if (wasWindowMove || wasDesktopMove) { // reset pointer
effects->defineCursor(Qt::PointingHandCursor);
} else { // click -> exit
const int desk = posToDesktop(me->pos());
if (desk > effects->numberOfDesktops())
return; // don't quit when missing desktop
setCurrentDesktop(desk);
setActive(false);
}
if (windowMove) {
if (wasWindowMove && isUsingPresentWindows()) {
const int targetDesktop = posToDesktop(cursorPos());
foreach (const int i, desktopList(windowMove)) {
WindowMotionManager& manager = m_managers[(i)*(effects->numScreens()) + windowMove->screen()];
manager.manage(windowMove);
if (EffectWindow* modal = windowMove->findModal())
manager.manage(modal);
if (i + 1 == targetDesktop) {
// for the desktop the window is dropped on, we use the current geometry
manager.setTransformedGeometry(windowMove, moveGeometryToDesktop(targetDesktop));
}
m_proxy->calculateWindowTransformations(manager.managedWindows(), windowMove->screen(), manager);
}
effects->addRepaintFull();
}
effects->setElevatedWindow(windowMove, false);
windowMove = nullptr;
}
wasWindowMove = false;
wasWindowCopy = false;
wasDesktopMove = false;
}
}
void DesktopGridEffect::grabbedKeyboardEvent(QKeyEvent* e)
{
if (timeline.currentValue() != 1) // Block user input during animations
return;
if (windowMove != nullptr)
return;
if (e->type() == QEvent::KeyPress) {
// check for global shortcuts
// HACK: keyboard grab disables the global shortcuts so we have to check for global shortcut (bug 156155)
if (shortcut.contains(e->key() + e->modifiers())) {
toggle();
return;
}
int desktop = -1;
// switch by F<number> or just <number>
if (e->key() >= Qt::Key_F1 && e->key() <= Qt::Key_F35)
desktop = e->key() - Qt::Key_F1 + 1;
else if (e->key() >= Qt::Key_0 && e->key() <= Qt::Key_9)
desktop = e->key() == Qt::Key_0 ? 10 : e->key() - Qt::Key_0;
if (desktop != -1) {
if (desktop <= effects->numberOfDesktops()) {
setHighlightedDesktop(desktop);
setCurrentDesktop(desktop);
setActive(false);
}
return;
}
switch(e->key()) {
// Wrap only on autorepeat
case Qt::Key_Left:
setHighlightedDesktop(desktopToLeft(highlightedDesktop, !e->isAutoRepeat()));
break;
case Qt::Key_Right:
setHighlightedDesktop(desktopToRight(highlightedDesktop, !e->isAutoRepeat()));
break;
case Qt::Key_Up:
setHighlightedDesktop(desktopUp(highlightedDesktop, !e->isAutoRepeat()));
break;
case Qt::Key_Down:
setHighlightedDesktop(desktopDown(highlightedDesktop, !e->isAutoRepeat()));
break;
case Qt::Key_Escape:
setActive(false);
return;
case Qt::Key_Enter:
case Qt::Key_Return:
case Qt::Key_Space:
setCurrentDesktop(highlightedDesktop);
setActive(false);
return;
case Qt::Key_Plus:
slotAddDesktop();
break;
case Qt::Key_Minus:
slotRemoveDesktop();
break;
default:
break;
}
}
}
bool DesktopGridEffect::borderActivated(ElectricBorder border)
{
if (!borderActivate.contains(border))
return false;
if (effects->activeFullScreenEffect() && effects->activeFullScreenEffect() != this)
return true;
toggle();
return true;
}
//-----------------------------------------------------------------------------
// Helper functions
// Transform a point to its position on the scaled grid
QPointF DesktopGridEffect::scalePos(const QPoint& pos, int desktop, int screen) const
{
if (screen == -1)
screen = effects->screenNumber(pos);
QRect screenGeom = effects->clientArea(ScreenArea, screen, 0);
QPoint desktopCell;
if (orientation == Qt::Horizontal) {
desktopCell.setX((desktop - 1) % gridSize.width() + 1);
desktopCell.setY((desktop - 1) / gridSize.width() + 1);
} else {
desktopCell.setX((desktop - 1) / gridSize.height() + 1);
desktopCell.setY((desktop - 1) % gridSize.height() + 1);
}
double progress = timeline.currentValue();
QPointF point(
interpolate(
(
(screenGeom.width() + unscaledBorder[screen]) *(desktopCell.x() - 1)
- (screenGeom.width() + unscaledBorder[screen]) *(activeCell.x() - 1)
) + pos.x(),
(
(scaledSize[screen].width() + border) *(desktopCell.x() - 1)
+ scaledOffset[screen].x()
+ (pos.x() - screenGeom.x()) * scale[screen]
),
progress),
interpolate(
(
(screenGeom.height() + unscaledBorder[screen]) *(desktopCell.y() - 1)
- (screenGeom.height() + unscaledBorder[screen]) *(activeCell.y() - 1)
) + pos.y(),
(
(scaledSize[screen].height() + border) *(desktopCell.y() - 1)
+ scaledOffset[screen].y()
+ (pos.y() - screenGeom.y()) * scale[screen]
),
progress)
);
return point;
}
// Detransform a point to its position on the full grid
// TODO: Doesn't correctly interpolate (Final position is correct though), don't forget to copy to posToDesktop()
QPoint DesktopGridEffect::unscalePos(const QPoint& pos, int* desktop) const
{
int screen = effects->screenNumber(pos);
QRect screenGeom = effects->clientArea(ScreenArea, screen, 0);
//double progress = timeline.currentValue();
double scaledX = /*interpolate(
( pos.x() - screenGeom.x() + unscaledBorder[screen] / 2.0 ) / ( screenGeom.width() + unscaledBorder[screen] ) + activeCell.x() - 1,*/
(pos.x() - scaledOffset[screen].x() + double(border) / 2.0) / (scaledSize[screen].width() + border)/*,
progress )*/;
double scaledY = /*interpolate(
( pos.y() - screenGeom.y() + unscaledBorder[screen] / 2.0 ) / ( screenGeom.height() + unscaledBorder[screen] ) + activeCell.y() - 1,*/
(pos.y() - scaledOffset[screen].y() + double(border) / 2.0) / (scaledSize[screen].height() + border)/*,
progress )*/;
int gx = qBound(0, int(scaledX), gridSize.width() - 1); // Zero-based
int gy = qBound(0, int(scaledY), gridSize.height() - 1);
scaledX -= gx;
scaledY -= gy;
if (desktop != nullptr) {
if (orientation == Qt::Horizontal)
*desktop = gy * gridSize.width() + gx + 1;
else
*desktop = gx * gridSize.height() + gy + 1;
}
return QPoint(
qBound(
screenGeom.x(),
qRound(
scaledX * (screenGeom.width() + unscaledBorder[screen])
- unscaledBorder[screen] / 2.0
+ screenGeom.x()
),
screenGeom.right()
),
qBound(
screenGeom.y(),
qRound(
scaledY * (screenGeom.height() + unscaledBorder[screen])
- unscaledBorder[screen] / 2.0
+ screenGeom.y()
),
screenGeom.bottom()
)
);
}
int DesktopGridEffect::posToDesktop(const QPoint& pos) const
{
// Copied from unscalePos()
int screen = effects->screenNumber(pos);
double scaledX = (pos.x() - scaledOffset[screen].x() + double(border) / 2.0) / (scaledSize[screen].width() + border);
double scaledY = (pos.y() - scaledOffset[screen].y() + double(border) / 2.0) / (scaledSize[screen].height() + border);
int gx = qBound(0, int(scaledX), gridSize.width() - 1); // Zero-based
int gy = qBound(0, int(scaledY), gridSize.height() - 1);
if (orientation == Qt::Horizontal)
return gy * gridSize.width() + gx + 1;
return gx * gridSize.height() + gy + 1;
}
EffectWindow* DesktopGridEffect::windowAt(QPoint pos) const
{
// Get stacking order top first
EffectWindowList windows = effects->stackingOrder();
EffectWindowList::Iterator begin = windows.begin();
EffectWindowList::Iterator end = windows.end();
--end;
while (begin < end)
qSwap(*begin++, *end--);
int desktop;
pos = unscalePos(pos, &desktop);
if (desktop > effects->numberOfDesktops())
return nullptr;
if (isUsingPresentWindows()) {
const int screen = effects->screenNumber(pos);
EffectWindow *w =
m_managers.at((desktop - 1) * (effects->numScreens()) + screen).windowAtPoint(pos, false);
if (w)
return w;
foreach (EffectWindow * w, windows) {
if (w->isOnDesktop(desktop) && w->isDesktop() && w->geometry().contains(pos))
return w;
}
} else {
foreach (EffectWindow * w, windows) {
if (w->isOnDesktop(desktop) && w->isOnCurrentActivity() && !w->isMinimized() && w->geometry().contains(pos))
return w;
}
}
return nullptr;
}
void DesktopGridEffect::setCurrentDesktop(int desktop)
{
if (orientation == Qt::Horizontal) {
activeCell.setX((desktop - 1) % gridSize.width() + 1);
activeCell.setY((desktop - 1) / gridSize.width() + 1);
} else {
activeCell.setX((desktop - 1) / gridSize.height() + 1);
activeCell.setY((desktop - 1) % gridSize.height() + 1);
}
if (effects->currentDesktop() != desktop)
effects->setCurrentDesktop(desktop);
}
void DesktopGridEffect::setHighlightedDesktop(int d)
{
if (d == highlightedDesktop || d <= 0 || d > effects->numberOfDesktops())
return;
if (highlightedDesktop > 0 && highlightedDesktop <= hoverTimeline.count())
hoverTimeline[highlightedDesktop-1]->setCurrentTime(qMin(hoverTimeline[highlightedDesktop-1]->currentTime(),
hoverTimeline[highlightedDesktop-1]->duration()));
highlightedDesktop = d;
if (highlightedDesktop <= hoverTimeline.count())
hoverTimeline[highlightedDesktop-1]->setCurrentTime(qMax(hoverTimeline[highlightedDesktop-1]->currentTime(), 0));
effects->addRepaintFull();
}
int DesktopGridEffect::desktopToRight(int desktop, bool wrap) const
{
// Copied from Workspace::desktopToRight()
int dt = desktop - 1;
if (orientation == Qt::Vertical) {
dt += gridSize.height();
if (dt >= effects->numberOfDesktops()) {
if (wrap)
dt -= effects->numberOfDesktops();
else
return desktop;
}
} else {
int d = (dt % gridSize.width()) + 1;
if (d >= gridSize.width()) {
if (wrap)
d -= gridSize.width();
else
return desktop;
}
dt = dt - (dt % gridSize.width()) + d;
}
return dt + 1;
}
int DesktopGridEffect::desktopToLeft(int desktop, bool wrap) const
{
// Copied from Workspace::desktopToLeft()
int dt = desktop - 1;
if (orientation == Qt::Vertical) {
dt -= gridSize.height();
if (dt < 0) {
if (wrap)
dt += effects->numberOfDesktops();
else
return desktop;
}
} else {
int d = (dt % gridSize.width()) - 1;
if (d < 0) {
if (wrap)
d += gridSize.width();
else
return desktop;
}
dt = dt - (dt % gridSize.width()) + d;
}
return dt + 1;
}
int DesktopGridEffect::desktopUp(int desktop, bool wrap) const
{
// Copied from Workspace::desktopUp()
int dt = desktop - 1;
if (orientation == Qt::Horizontal) {
dt -= gridSize.width();
if (dt < 0) {
if (wrap)
dt += effects->numberOfDesktops();
else
return desktop;
}
} else {
int d = (dt % gridSize.height()) - 1;
if (d < 0) {
if (wrap)
d += gridSize.height();
else
return desktop;
}
dt = dt - (dt % gridSize.height()) + d;
}
return dt + 1;
}
int DesktopGridEffect::desktopDown(int desktop, bool wrap) const
{
// Copied from Workspace::desktopDown()
int dt = desktop - 1;
if (orientation == Qt::Horizontal) {
dt += gridSize.width();
if (dt >= effects->numberOfDesktops()) {
if (wrap)
dt -= effects->numberOfDesktops();
else
return desktop;
}
} else {
int d = (dt % gridSize.height()) + 1;
if (d >= gridSize.height()) {
if (wrap)
d -= gridSize.height();
else
return desktop;
}
dt = dt - (dt % gridSize.height()) + d;
}
return dt + 1;
}
//-----------------------------------------------------------------------------
// Activation
void DesktopGridEffect::toggle()
{
setActive(!activated);
}
void DesktopGridEffect::setActive(bool active)
{
if (effects->activeFullScreenEffect() && effects->activeFullScreenEffect() != this)
return; // Only one fullscreen effect at a time thanks
if (active && isMotionManagerMovingWindows())
return; // Still moving windows from last usage - don't activate
if (activated == active)
return; // Already in that state
activated = active;
if (activated) {
effects->setShowingDesktop(false);
if (timeline.currentValue() == 0)
setup();
} else {
if (isUsingPresentWindows()) {
QList<WindowMotionManager>::iterator it;
for (it = m_managers.begin(); it != m_managers.end(); ++it) {
foreach (EffectWindow * w, (*it).managedWindows()) {
(*it).moveWindow(w, w->geometry());
}
}
}
QTimer::singleShot(zoomDuration + 1, this,
[this] {
if (activated)
return;
for (EffectQuickScene *view : m_desktopButtons) {
view->hide();
}
}
);
setHighlightedDesktop(effects->currentDesktop()); // Ensure selected desktop is highlighted
}
effects->addRepaintFull();
}
void DesktopGridEffect::setup()
{
if (!isActive())
return;
if (!keyboardGrab) {
keyboardGrab = effects->grabKeyboard(this);
effects->startMouseInterception(this, Qt::PointingHandCursor);
effects->setActiveFullScreenEffect(this);
}
setHighlightedDesktop(effects->currentDesktop());
// Soft highlighting
qDeleteAll(hoverTimeline);
hoverTimeline.clear();
for (int i = 0; i < effects->numberOfDesktops(); i++) {
QTimeLine *newTimeline = new QTimeLine(zoomDuration, this);
newTimeline->setEasingCurve(QEasingCurve::InOutSine);
hoverTimeline.append(newTimeline);
}
hoverTimeline[effects->currentDesktop() - 1]->setCurrentTime(hoverTimeline[effects->currentDesktop() - 1]->duration());
// Create desktop name textures if enabled
if (desktopNameAlignment) {
QFont font;
font.setBold(true);
font.setPointSize(12);
for (int i = 0; i < effects->numberOfDesktops(); i++) {
EffectFrame* frame = effects->effectFrame(EffectFrameUnstyled, false);
frame->setFont(font);
frame->setText(effects->desktopName(i + 1));
frame->setAlignment(desktopNameAlignment);
desktopNames.append(frame);
}
}
setupGrid();
setCurrentDesktop(effects->currentDesktop());
// setup the motion managers
if (clickBehavior == SwitchDesktopAndActivateWindow)
m_proxy = static_cast<PresentWindowsEffectProxy*>(effects->getProxy(BuiltInEffects::nameForEffect(BuiltInEffect::PresentWindows)));
if (isUsingPresentWindows()) {
m_proxy->reCreateGrids(); // revalidation on multiscreen, bug #351724
for (int i = 1; i <= effects->numberOfDesktops(); i++) {
for (int j = 0; j < effects->numScreens(); j++) {
WindowMotionManager manager;
foreach (EffectWindow * w, effects->stackingOrder()) {
if (w->isOnDesktop(i) && w->screen() == j &&isRelevantWithPresentWindows(w)) {
manager.manage(w);
}
}
m_proxy->calculateWindowTransformations(manager.managedWindows(), j, manager);
m_managers.append(manager);
}
}
}
auto it = m_desktopButtons.begin();
const int n = DesktopGridConfig::showAddRemove() ? effects->numScreens() : 0;
for (int i = 0; i < n; ++i) {
EffectQuickScene *view;
QSize size;
if (it == m_desktopButtons.end()) {
view = new EffectQuickScene(this);
connect(view, &EffectQuickView::repaintNeeded, this, []() {
effects->addRepaintFull();
});
view->rootContext()->setContextProperty("effects", effects);
view->setSource(QUrl(QStandardPaths::locate(QStandardPaths::GenericDataLocation, QStringLiteral("kwin/effects/desktopgrid/main.qml"))));
QQuickItem *rootItem = view->rootItem();
if (!rootItem) {
delete view;
continue;
}
m_desktopButtons.append(view);
it = m_desktopButtons.end(); // changed through insert!
size = QSize(rootItem->implicitWidth(), rootItem->implicitHeight());
} else {
view = *it;
++it;
size = view->size();
}
const QRect screenRect = effects->clientArea(FullScreenArea, i, 1);
view->show(); // pseudo show must happen before geometry changes
const QPoint position(screenRect.right() - border/3 - size.width(),
screenRect.bottom() - border/3 - size.height());
view->setGeometry(QRect(position, size));
}
while (it != m_desktopButtons.end()) {
(*it)->deleteLater();
it = m_desktopButtons.erase(it);
}
}
void DesktopGridEffect::setupGrid()
{
// We need these variables for every paint so lets cache them
int x, y;
int numDesktops = effects->numberOfDesktops();
switch(layoutMode) {
default:
case LayoutPager:
orientation = Qt::Horizontal;
gridSize = effects->desktopGridSize();
// sanity check: pager may report incorrect size in case of one desktop
if (numDesktops == 1) {
gridSize = QSize(1, 1);
}
break;
case LayoutAutomatic:
y = sqrt(float(numDesktops)) + 0.5;
x = float(numDesktops) / float(y) + 0.5;
if (x * y < numDesktops)
x++;
orientation = Qt::Horizontal;
gridSize.setWidth(x);
gridSize.setHeight(y);
break;
case LayoutCustom:
orientation = Qt::Horizontal;
gridSize.setWidth(ceil(effects->numberOfDesktops() / double(customLayoutRows)));
gridSize.setHeight(customLayoutRows);
break;
}
scale.clear();
unscaledBorder.clear();
scaledSize.clear();
scaledOffset.clear();
for (int i = 0; i < effects->numScreens(); i++) {
QRect geom = effects->clientArea(ScreenArea, i, 0);
double sScale;
if (gridSize.width() > gridSize.height())
sScale = (geom.width() - border * (gridSize.width() + 1)) / double(geom.width() * gridSize.width());
else
sScale = (geom.height() - border * (gridSize.height() + 1)) / double(geom.height() * gridSize.height());
double sBorder = border / sScale;
QSizeF size(
double(geom.width()) * sScale,
double(geom.height()) * sScale
);
QPointF offset(
geom.x() + (geom.width() - size.width() * gridSize.width() - border *(gridSize.width() - 1)) / 2.0,
geom.y() + (geom.height() - size.height() * gridSize.height() - border *(gridSize.height() - 1)) / 2.0
);
scale.append(sScale);
unscaledBorder.append(sBorder);
scaledSize.append(size);
scaledOffset.append(offset);
}
}
void DesktopGridEffect::finish()
{
if (desktopNameAlignment) {
qDeleteAll(desktopNames);
desktopNames.clear();
}
windowMoveElevateTimer->stop();
if (keyboardGrab)
effects->ungrabKeyboard();
keyboardGrab = false;
lastPresentTime = std::chrono::milliseconds::zero();
effects->stopMouseInterception(this);
effects->setActiveFullScreenEffect(nullptr);
if (isUsingPresentWindows()) {
while (!m_managers.isEmpty()) {
m_managers.first().unmanageAll();
m_managers.removeFirst();
}
m_proxy = nullptr;
}
}
void DesktopGridEffect::globalShortcutChanged(QAction *action, const QKeySequence& seq)
{
if (action->objectName() != QStringLiteral("ShowDesktopGrid")) {
return;
}
shortcut.clear();
shortcut.append(seq);
}
bool DesktopGridEffect::isMotionManagerMovingWindows() const
{
if (isUsingPresentWindows()) {
QList<WindowMotionManager>::const_iterator it;
for (it = m_managers.begin(); it != m_managers.end(); ++it) {
if ((*it).areWindowsMoving())
return true;
}
}
return false;
}
bool DesktopGridEffect::isUsingPresentWindows() const
{
return (m_proxy != nullptr);
}
// transforms the geometry of the moved window to a geometry on the desktop
// internal method only used when a window is dropped onto a desktop
QRectF DesktopGridEffect::moveGeometryToDesktop(int desktop) const
{
QPointF point = unscalePos(m_windowMoveGeometry.topLeft() + cursorPos() - m_windowMoveStartPoint);
const double scaleFactor = scale[ windowMove->screen()];
if (posToDesktop(m_windowMoveGeometry.topLeft() + cursorPos() - m_windowMoveStartPoint) != desktop) {
// topLeft is not on the desktop - check other corners
// if all corners are not on the desktop the window is bigger than the desktop - no matter what it will look strange
if (posToDesktop(m_windowMoveGeometry.topRight() + cursorPos() - m_windowMoveStartPoint) == desktop) {
point = unscalePos(m_windowMoveGeometry.topRight() + cursorPos() - m_windowMoveStartPoint) -
QPointF(m_windowMoveGeometry.width(), 0) / scaleFactor;
} else if (posToDesktop(m_windowMoveGeometry.bottomLeft() + cursorPos() - m_windowMoveStartPoint) == desktop) {
point = unscalePos(m_windowMoveGeometry.bottomLeft() + cursorPos() - m_windowMoveStartPoint) -
QPointF(0, m_windowMoveGeometry.height()) / scaleFactor;
} else if (posToDesktop(m_windowMoveGeometry.bottomRight() + cursorPos() - m_windowMoveStartPoint) == desktop) {
point = unscalePos(m_windowMoveGeometry.bottomRight() + cursorPos() - m_windowMoveStartPoint) -
QPointF(m_windowMoveGeometry.width(), m_windowMoveGeometry.height()) / scaleFactor;
}
}
return QRectF(point, m_windowMoveGeometry.size() / scaleFactor);
}
void DesktopGridEffect::slotAddDesktop()
{
effects->setNumberOfDesktops(effects->numberOfDesktops() + 1);
}
void DesktopGridEffect::slotRemoveDesktop()
{
effects->setNumberOfDesktops(effects->numberOfDesktops() - 1);
}
void DesktopGridEffect::slotNumberDesktopsChanged(uint old)
{
if (!activated)
return;
const uint desktop = effects->numberOfDesktops();
if (old < desktop)
desktopsAdded(old);
else
desktopsRemoved(old);
}
void DesktopGridEffect::desktopsAdded(int old)
{
const int desktop = effects->numberOfDesktops();
for (int i = old; i <= effects->numberOfDesktops(); i++) {
// add a timeline for the new desktop
QTimeLine *newTimeline = new QTimeLine(zoomDuration, this);
newTimeline->setEasingCurve(QEasingCurve::InOutSine);
hoverTimeline.append(newTimeline);
}
// Create desktop name textures if enabled
if (desktopNameAlignment) {
QFont font;
font.setBold(true);
font.setPointSize(12);
for (int i = old; i < desktop; i++) {
EffectFrame* frame = effects->effectFrame(EffectFrameUnstyled, false);
frame->setFont(font);
frame->setText(effects->desktopName(i + 1));
frame->setAlignment(desktopNameAlignment);
desktopNames.append(frame);
}
}
if (isUsingPresentWindows()) {
for (int i = old+1; i <= effects->numberOfDesktops(); ++i) {
for (int j = 0; j < effects->numScreens(); ++j) {
WindowMotionManager manager;
foreach (EffectWindow * w, effects->stackingOrder()) {
if (w->isOnDesktop(i) && w->screen() == j &&isRelevantWithPresentWindows(w)) {
manager.manage(w);
}
}
m_proxy->calculateWindowTransformations(manager.managedWindows(), j, manager);
m_managers.append(manager);
}
}
}
setupGrid();
// and repaint
effects->addRepaintFull();
}
void DesktopGridEffect::desktopsRemoved(int old)
{
const int desktop = effects->numberOfDesktops();
for (int i = desktop; i < old; i++) {
delete hoverTimeline.takeLast();
if (desktopNameAlignment) {
delete desktopNames.last();
desktopNames.removeLast();
}
if (isUsingPresentWindows()) {
for (int j = 0; j < effects->numScreens(); ++j) {
WindowMotionManager& manager = m_managers.last();
manager.unmanageAll();
m_managers.removeLast();
}
}
}
// add removed windows to the last desktop
if (isUsingPresentWindows()) {
for (int j = 0; j < effects->numScreens(); ++j) {
WindowMotionManager& manager = m_managers[(desktop-1)*(effects->numScreens())+j ];
foreach (EffectWindow * w, effects->stackingOrder()) {
if (manager.isManaging(w))
continue;
if (w->isOnDesktop(desktop) && w->screen() == j && isRelevantWithPresentWindows(w)) {
manager.manage(w);
}
}
m_proxy->calculateWindowTransformations(manager.managedWindows(), j, manager);
}
}
setupGrid();
// and repaint
effects->addRepaintFull();
}
//TODO: kill this function? or at least keep a consistent numeration with desktops starting from 1
QVector<int> DesktopGridEffect::desktopList(const EffectWindow *w) const
{
if (w->isOnAllDesktops()) {
static QVector<int> allDesktops;
if (allDesktops.count() != effects->numberOfDesktops()) {
allDesktops.resize(effects->numberOfDesktops());
for (int i = 0; i < effects->numberOfDesktops(); ++i)
allDesktops[i] = i;
}
return allDesktops;
}
QVector<int> desks;
desks.resize(w->desktops().count());
int i = 0;
for (const int desk : w->desktops()) {
desks[i++] = desk-1;
}
return desks;
}
bool DesktopGridEffect::isActive() const
{
return (timeline.currentValue() != 0 || activated || (isUsingPresentWindows() && isMotionManagerMovingWindows())) && !effects->isScreenLocked();
}
bool DesktopGridEffect::isRelevantWithPresentWindows(EffectWindow *w) const
{
if (w->isSpecialWindow() || w->isUtility()) {
return false;
}
if (w->isSkipSwitcher()) {
return false;
}
if (w->isDeleted()) {
return false;
}
if (!w->acceptsFocus()) {
return false;
}
if (!w->isOnCurrentActivity()) {
return false;
}
return true;
}
} // namespace
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