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kwin/effects/presentwindows/presentwindows.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 Rivo Laks <rivolaks@hot.ee>
SPDX-FileCopyrightText: 2008 Lucas Murray <lmurray@undefinedfire.com>
SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "presentwindows.h"
//KConfigSkeleton
#include "presentwindowsconfig.h"
#include <QAction>
#include <KGlobalAccel>
#include <KLocalizedString>
#include <kwinglutils.h>
#include <QMouseEvent>
#include <netwm_def.h>
#include <QApplication>
#include <QQmlContext>
#include <QQmlEngine>
#include <QQuickItem>
#include <QQuickView>
#include <QGraphicsObject>
#include <QTimer>
#include <QVector2D>
#include <QVector4D>
#include <climits>
#include <cmath>
namespace KWin
{
PresentWindowsEffect::PresentWindowsEffect()
: m_proxy(this)
, m_activated(false)
, m_ignoreMinimized(false)
, m_decalOpacity(0.0)
, m_hasKeyboardGrab(false)
, m_mode(ModeCurrentDesktop)
, m_managerWindow(nullptr)
, m_needInitialSelection(false)
, m_highlightedWindow(nullptr)
, m_lastPresentTime(std::chrono::milliseconds::zero())
, m_filterFrame(nullptr)
, m_closeView(nullptr)
, m_exposeAction(new QAction(this))
, m_exposeAllAction(new QAction(this))
, m_exposeClassAction(new QAction(this))
{
initConfig<PresentWindowsConfig>();
auto announceSupportProperties = [this] {
m_atomDesktop = effects->announceSupportProperty("_KDE_PRESENT_WINDOWS_DESKTOP", this);
m_atomWindows = effects->announceSupportProperty("_KDE_PRESENT_WINDOWS_GROUP", this);
};
announceSupportProperties();
connect(effects, &EffectsHandler::xcbConnectionChanged, this, announceSupportProperties);
QAction* exposeAction = m_exposeAction;
exposeAction->setObjectName(QStringLiteral("Expose"));
exposeAction->setText(i18n("Toggle Present Windows (Current desktop)"));
KGlobalAccel::self()->setDefaultShortcut(exposeAction, QList<QKeySequence>() << Qt::CTRL + Qt::Key_F9);
KGlobalAccel::self()->setShortcut(exposeAction, QList<QKeySequence>() << Qt::CTRL + Qt::Key_F9);
shortcut = KGlobalAccel::self()->shortcut(exposeAction);
effects->registerGlobalShortcut(Qt::CTRL + Qt::Key_F9, exposeAction);
connect(exposeAction, &QAction::triggered, this, &PresentWindowsEffect::toggleActive);
QAction* exposeAllAction = m_exposeAllAction;
exposeAllAction->setObjectName(QStringLiteral("ExposeAll"));
exposeAllAction->setText(i18n("Toggle Present Windows (All desktops)"));
KGlobalAccel::self()->setDefaultShortcut(exposeAllAction, QList<QKeySequence>() << Qt::CTRL + Qt::Key_F10 << Qt::Key_LaunchC);
KGlobalAccel::self()->setShortcut(exposeAllAction, QList<QKeySequence>() << Qt::CTRL + Qt::Key_F10 << Qt::Key_LaunchC);
shortcutAll = KGlobalAccel::self()->shortcut(exposeAllAction);
effects->registerGlobalShortcut(Qt::CTRL + Qt::Key_F10, exposeAllAction);
effects->registerTouchpadSwipeShortcut(SwipeDirection::Down, exposeAllAction);
connect(exposeAllAction, &QAction::triggered, this, &PresentWindowsEffect::toggleActiveAllDesktops);
QAction* exposeClassAction = m_exposeClassAction;
exposeClassAction->setObjectName(QStringLiteral("ExposeClass"));
exposeClassAction->setText(i18n("Toggle Present Windows (Window class)"));
KGlobalAccel::self()->setDefaultShortcut(exposeClassAction, QList<QKeySequence>() << Qt::CTRL + Qt::Key_F7);
KGlobalAccel::self()->setShortcut(exposeClassAction, QList<QKeySequence>() << Qt::CTRL + Qt::Key_F7);
effects->registerGlobalShortcut(Qt::CTRL + Qt::Key_F7, exposeClassAction);
connect(exposeClassAction, &QAction::triggered, this, &PresentWindowsEffect::toggleActiveClass);
shortcutClass = KGlobalAccel::self()->shortcut(exposeClassAction);
connect(KGlobalAccel::self(), &KGlobalAccel::globalShortcutChanged, this, &PresentWindowsEffect::globalShortcutChanged);
reconfigure(ReconfigureAll);
connect(effects, &EffectsHandler::windowAdded, this, &PresentWindowsEffect::slotWindowAdded);
connect(effects, &EffectsHandler::windowClosed, this, &PresentWindowsEffect::slotWindowClosed);
connect(effects, &EffectsHandler::windowDeleted, this, &PresentWindowsEffect::slotWindowDeleted);
connect(effects, &EffectsHandler::windowFrameGeometryChanged, this, &PresentWindowsEffect::slotWindowFrameGeometryChanged);
connect(effects, &EffectsHandler::propertyNotify, this, &PresentWindowsEffect::slotPropertyNotify);
connect(effects, &EffectsHandler::numberScreensChanged, this,
[this] {
if (isActive())
reCreateGrids();
}
);
connect(effects, &EffectsHandler::screenAboutToLock, this, [this]() {
setActive(false);
});
}
PresentWindowsEffect::~PresentWindowsEffect()
{
delete m_filterFrame;
delete m_closeView;
}
void PresentWindowsEffect::reconfigure(ReconfigureFlags)
{
PresentWindowsConfig::self()->read();
foreach (ElectricBorder border, m_borderActivate) {
effects->unreserveElectricBorder(border, this);
}
foreach (ElectricBorder border, m_borderActivateAll) {
effects->unreserveElectricBorder(border, this);
}
m_borderActivate.clear();
m_borderActivateAll.clear();
foreach (int i, PresentWindowsConfig::borderActivate()) {
m_borderActivate.append(ElectricBorder(i));
effects->reserveElectricBorder(ElectricBorder(i), this);
}
foreach (int i, PresentWindowsConfig::borderActivateAll()) {
m_borderActivateAll.append(ElectricBorder(i));
effects->reserveElectricBorder(ElectricBorder(i), this);
}
foreach (int i, PresentWindowsConfig::borderActivateClass()) {
m_borderActivateClass.append(ElectricBorder(i));
effects->reserveElectricBorder(ElectricBorder(i), this);
}
m_layoutMode = PresentWindowsConfig::layoutMode();
m_showCaptions = PresentWindowsConfig::drawWindowCaptions();
m_showIcons = PresentWindowsConfig::drawWindowIcons();
m_doNotCloseWindows = !PresentWindowsConfig::allowClosingWindows();
if (m_doNotCloseWindows) {
delete m_closeView;
m_closeView = nullptr;
}
m_ignoreMinimized = PresentWindowsConfig::ignoreMinimized();
m_accuracy = PresentWindowsConfig::accuracy() * 20;
m_fillGaps = PresentWindowsConfig::fillGaps();
m_fadeDuration = double(animationTime(150));
m_showPanel = PresentWindowsConfig::showPanel();
m_leftButtonWindow = (WindowMouseAction)PresentWindowsConfig::leftButtonWindow();
m_middleButtonWindow = (WindowMouseAction)PresentWindowsConfig::middleButtonWindow();
m_rightButtonWindow = (WindowMouseAction)PresentWindowsConfig::rightButtonWindow();
m_leftButtonDesktop = (DesktopMouseAction)PresentWindowsConfig::leftButtonDesktop();
m_middleButtonDesktop = (DesktopMouseAction)PresentWindowsConfig::middleButtonDesktop();
m_rightButtonDesktop = (DesktopMouseAction)PresentWindowsConfig::rightButtonDesktop();
// touch screen edges
const QVector<ElectricBorder> relevantBorders{ElectricLeft, ElectricTop, ElectricRight, ElectricBottom};
for (auto e : relevantBorders) {
effects->unregisterTouchBorder(e, m_exposeAction);
effects->unregisterTouchBorder(e, m_exposeAllAction);
effects->unregisterTouchBorder(e, m_exposeClassAction);
}
auto touchEdge = [&relevantBorders] (const QList<int> touchBorders, QAction *action) {
for (int i : touchBorders) {
if (!relevantBorders.contains(ElectricBorder(i))) {
continue;
}
effects->registerTouchBorder(ElectricBorder(i), action);
}
};
touchEdge(PresentWindowsConfig::touchBorderActivate(), m_exposeAction);
touchEdge(PresentWindowsConfig::touchBorderActivateAll(), m_exposeAllAction);
touchEdge(PresentWindowsConfig::touchBorderActivateClass(), m_exposeClassAction);
}
void* PresentWindowsEffect::proxy()
{
return &m_proxy;
}
void PresentWindowsEffect::toggleActiveClass()
{
if (!m_activated) {
if (!effects->activeWindow())
return;
m_mode = ModeWindowClass;
m_class = effects->activeWindow()->windowClass();
}
setActive(!m_activated);
}
//-----------------------------------------------------------------------------
// Screen painting
void PresentWindowsEffect::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 (m_lastPresentTime.count()) {
time = std::max(1, int((presentTime - m_lastPresentTime).count()));
} else {
time = 1;
}
m_lastPresentTime = presentTime;
m_motionManager.calculate(time);
// We need to mark the screen as having been transformed otherwise there will be no repainting
if (m_activated || m_motionManager.managingWindows())
data.mask |= Effect::PAINT_SCREEN_WITH_TRANSFORMED_WINDOWS;
if (m_activated)
m_decalOpacity = qMin(1.0, m_decalOpacity + time / m_fadeDuration);
else
m_decalOpacity = qMax(0.0, m_decalOpacity - time / m_fadeDuration);
effects->prePaintScreen(data, presentTime);
}
void PresentWindowsEffect::paintScreen(int mask, const QRegion &region, ScreenPaintData &data)
{
effects->paintScreen(mask, region, data);
// Display the filter box
if (!m_windowFilter.isEmpty())
m_filterFrame->render(region);
if (m_closeView)
effects->renderEffectQuickView(m_closeView);
}
void PresentWindowsEffect::postPaintScreen()
{
if (m_motionManager.areWindowsMoving()) {
effects->addRepaintFull();
} else {
m_lastPresentTime = std::chrono::milliseconds::zero();
if (!m_activated && m_motionManager.managingWindows() && !(m_closeView && m_closeView->isVisible())) {
// We have finished moving them back, stop processing
m_motionManager.unmanageAll();
DataHash::iterator i = m_windowData.begin();
while (i != m_windowData.end()) {
delete i.value().textFrame;
delete i.value().iconFrame;
++i;
}
m_windowData.clear();
foreach (EffectWindow * w, effects->stackingOrder()) {
w->setData(WindowForceBlurRole, QVariant());
w->setData(WindowForceBackgroundContrastRole, QVariant());
}
effects->setActiveFullScreenEffect(nullptr);
effects->addRepaintFull();
} else if (m_activated && m_needInitialSelection) {
m_needInitialSelection = false;
QMouseEvent me(QEvent::MouseMove, cursorPos(), Qt::NoButton, Qt::NoButton, Qt::NoModifier);
windowInputMouseEvent(&me);
}
}
// Update windows that are changing brightness or opacity
for (auto i = m_windowData.begin(); i != m_windowData.end(); ++i) {
bool resetLastPresentTime = true;
if (i.value().opacity > 0.0 && i.value().opacity < 1.0) {
i.key()->addRepaintFull();
resetLastPresentTime = false;
}
if (i.key()->isDesktop() && !m_motionManager.isManaging(i.key())) {
if (i.value().highlight != 0.3) {
i.key()->addRepaintFull();
resetLastPresentTime = false;
}
}
else if (i.value().highlight > 0.0 && i.value().highlight < 1.0) {
i.key()->addRepaintFull();
resetLastPresentTime = false;
}
if (resetLastPresentTime) {
i->lastPresentTime = std::chrono::milliseconds::zero();
}
}
effects->postPaintScreen();
}
//-----------------------------------------------------------------------------
// Window painting
void PresentWindowsEffect::prePaintWindow(EffectWindow *w, WindowPrePaintData &data, std::chrono::milliseconds presentTime)
{
// TODO: We should also check to see if any windows are fading just in case fading takes longer
// than moving the windows when the effect is deactivated.
if (m_activated || m_motionManager.areWindowsMoving() || m_closeView) {
DataHash::iterator winData = m_windowData.find(w);
if (winData == m_windowData.end()) {
effects->prePaintWindow(w, data, presentTime);
return;
}
w->enablePainting(EffectWindow::PAINT_DISABLED_BY_MINIMIZE); // Display always
w->enablePainting(EffectWindow::PAINT_DISABLED_BY_DESKTOP);
// The animation code assumes that the time diff cannot be 0, let's work around it.
int time;
if (winData->lastPresentTime.count()) {
time = std::max(1, int((presentTime - winData->lastPresentTime).count()));
} else {
time = 1;
}
winData->lastPresentTime = presentTime;
// Calculate window's opacity
// TODO: Minimized windows or windows not on the current desktop are only 75% visible?
if (winData->visible) {
if (winData->deleted)
winData->opacity = qMax(0.0, winData->opacity - time / m_fadeDuration);
else
winData->opacity = qMin(/*(w->isMinimized() || !w->isOnCurrentDesktop()) ? 0.75 :*/ 1.0,
winData->opacity + time / m_fadeDuration);
} else
winData->opacity = qMax(0.0, winData->opacity - time / m_fadeDuration);
if (winData->opacity <= 0.0) {
// don't disable painting for panels if show panel is set
if (!(m_showPanel && w->isDock()))
w->disablePainting(EffectWindow::PAINT_DISABLED);
} else if (winData->opacity != 1.0)
data.setTranslucent();
const bool isInMotion = m_motionManager.isManaging(w);
// Calculate window's brightness
if (w == m_highlightedWindow || !m_activated)
winData->highlight = qMin(1.0, winData->highlight + time / m_fadeDuration);
else if (!isInMotion && w->isDesktop())
winData->highlight = 0.3;
else
winData->highlight = qMax(0.0, winData->highlight - time / m_fadeDuration);
// Closed windows
if (winData->deleted) {
data.setTranslucent();
if (winData->opacity <= 0.0 && winData->referenced) {
// it's possible that another effect has referenced the window
// we have to keep the window in the list to prevent flickering
winData->referenced = false;
w->unrefWindow();
} else
w->enablePainting(EffectWindow::PAINT_DISABLED_BY_DELETE);
}
// desktop windows on other desktops (Plasma activity per desktop) should not be painted
if (w->isDesktop() && !w->isOnCurrentDesktop())
w->disablePainting(EffectWindow::PAINT_DISABLED_BY_DESKTOP);
if (isInMotion)
data.setTransformed(); // We will be moving this window
}
effects->prePaintWindow(w, data, presentTime);
}
void PresentWindowsEffect::paintWindow(EffectWindow *w, int mask, QRegion region, WindowPaintData &data)
{
if (m_activated || m_motionManager.areWindowsMoving()) {
DataHash::const_iterator winData = m_windowData.constFind(w);
if (winData == m_windowData.constEnd() || (w->isDock() && m_showPanel)) {
// in case the panel should be shown just display it without any changes
effects->paintWindow(w, mask, region, data);
return;
}
mask |= PAINT_WINDOW_LANCZOS;
// Apply opacity and brightness
data.multiplyOpacity(winData->opacity);
data.multiplyBrightness(interpolate(0.40, 1.0, winData->highlight));
if (m_motionManager.isManaging(w)) {
if (w->isDesktop()) {
effects->paintWindow(w, mask, region, data);
}
m_motionManager.apply(w, data);
QRect rect = m_motionManager.transformedGeometry(w).toRect();
if (m_activated && winData->highlight > 0.0) {
// scale the window (interpolated by the highlight level) to at least 105% or to cover 1/16 of the screen size - yet keep it in screen bounds
QRect area = effects->clientArea(FullScreenArea, w);
QSizeF effSize(w->width()*data.xScale(), w->height()*data.yScale());
const float xr = area.width()/effSize.width();
const float yr = area.height()/effSize.height();
float tScale = 0.0;
if (xr < yr) {
tScale = qMax(xr/4.0, yr/32.0);
} else {
tScale = qMax(xr/32.0, yr/4.0);
}
if (tScale < 1.05) {
tScale = 1.05;
}
if (effSize.width()*tScale > area.width())
tScale = area.width() / effSize.width();
if (effSize.height()*tScale > area.height())
tScale = area.height() / effSize.height();
const qreal scale = interpolate(1.0, tScale, winData->highlight);
if (scale > 1.0) {
if (scale < tScale) // don't use lanczos during transition
mask &= ~PAINT_WINDOW_LANCZOS;
const float df = (tScale-1.0f)*0.5f;
int tx = qRound(rect.width()*df);
int ty = qRound(rect.height()*df);
QRect tRect(rect.adjusted(-tx, -ty, tx, ty));
tx = qMax(tRect.x(), area.x()) + qMin(0, area.right()-tRect.right());
ty = qMax(tRect.y(), area.y()) + qMin(0, area.bottom()-tRect.bottom());
tx = qRound((tx-rect.x())*winData->highlight);
ty = qRound((ty-rect.y())*winData->highlight);
rect.translate(tx,ty);
rect.setWidth(rect.width()*scale);
rect.setHeight(rect.height()*scale);
data *= QVector2D(scale, scale);
data += QPoint(tx, ty);
}
}
if (m_motionManager.areWindowsMoving()) {
mask &= ~PAINT_WINDOW_LANCZOS;
}
effects->paintWindow(w, mask, region, data);
if (m_showIcons) {
QPoint point(rect.x() + rect.width() * 0.95,
rect.y() + rect.height() * 0.95);
winData->iconFrame->setPosition(point);
if (effects->compositingType() == KWin::OpenGL2Compositing && data.shader) {
const float a = 0.9 * data.opacity() * m_decalOpacity * 0.75;
data.shader->setUniform(GLShader::ModulationConstant, QVector4D(a, a, a, a));
}
winData->iconFrame->render(region, 0.9 * data.opacity() * m_decalOpacity, 0.75);
}
if (m_showCaptions) {
QPoint point(rect.x() + rect.width() / 2,
rect.y() + rect.height() / 2);
winData->textFrame->setPosition(point);
if (effects->compositingType() == KWin::OpenGL2Compositing && data.shader) {
const float a = 0.9 * data.opacity() * m_decalOpacity * 0.75;
data.shader->setUniform(GLShader::ModulationConstant, QVector4D(a, a, a, a));
}
winData->textFrame->render(region, 0.9 * data.opacity() * m_decalOpacity, 0.75);
}
} else {
effects->paintWindow(w, mask, region, data);
}
} else
effects->paintWindow(w, mask, region, data);
}
//-----------------------------------------------------------------------------
// User interaction
void PresentWindowsEffect::slotWindowAdded(EffectWindow *w)
{
if (!m_activated)
return;
WindowData *winData = &m_windowData[w];
winData->visible = isVisibleWindow(w);
winData->opacity = 0.0;
winData->highlight = 0.0;
winData->textFrame = effects->effectFrame(EffectFrameUnstyled, false);
QFont font;
font.setBold(true);
font.setPointSize(12);
winData->textFrame->setFont(font);
winData->iconFrame = effects->effectFrame(EffectFrameUnstyled, false);
winData->iconFrame->setAlignment(Qt::AlignRight | Qt::AlignBottom);
winData->iconFrame->setIcon(w->icon());
winData->iconFrame->setIconSize(QSize(32, 32));
if (isSelectableWindow(w)) {
m_motionManager.manage(w);
rearrangeWindows();
}
}
void PresentWindowsEffect::slotWindowClosed(EffectWindow *w)
{
if (m_managerWindow == w)
m_managerWindow = nullptr;
DataHash::iterator winData = m_windowData.find(w);
if (winData == m_windowData.end())
return;
winData->deleted = true;
if (!winData->referenced) {
winData->referenced = true;
w->refWindow();
}
if (m_highlightedWindow == w)
setHighlightedWindow(findFirstWindow());
rearrangeWindows();
foreach (EffectWindow *w, m_motionManager.managedWindows()) {
winData = m_windowData.find(w);
if (winData != m_windowData.end() && !winData->deleted)
return; // found one that is not deleted? then we go on
}
setActive(false); //else no need to keep this open
}
void PresentWindowsEffect::slotWindowDeleted(EffectWindow *w)
{
DataHash::iterator winData = m_windowData.find(w);
if (winData == m_windowData.end())
return;
delete winData->textFrame;
delete winData->iconFrame;
m_windowData.erase(winData);
m_motionManager.unmanage(w);
}
void PresentWindowsEffect::slotWindowFrameGeometryChanged(EffectWindow* w, const QRect& old)
{
Q_UNUSED(old)
if (!m_activated)
return;
if (!m_windowData.contains(w))
return;
rearrangeWindows();
}
bool PresentWindowsEffect::borderActivated(ElectricBorder border)
{
int mode = 0;
if (m_borderActivate.contains(border))
mode |= 1;
else if (m_borderActivateAll.contains(border))
mode |= 2;
else if (m_borderActivateClass.contains(border))
mode |= 4;
if (!mode)
return false;
if (effects->activeFullScreenEffect() && effects->activeFullScreenEffect() != this)
return true;
if (mode & 1)
toggleActive();
else if (mode & 2)
toggleActiveAllDesktops();
else if (mode & 4)
toggleActiveClass();
return true;
}
void PresentWindowsEffect::windowInputMouseEvent(QEvent *e)
{
QMouseEvent* me = dynamic_cast< QMouseEvent* >(e);
if (!me) {
return;
}
me->setAccepted(false);
if (m_closeView) {
const bool contains = m_closeView->geometry().contains(me->pos());
if (!m_closeView->isVisible() && contains) {
updateCloseWindow();
}
m_closeView->forwardMouseEvent(e);
}
if (e->isAccepted()) {
return;
}
inputEventUpdate(me->pos(), me->type(), me->button());
}
void PresentWindowsEffect::inputEventUpdate(const QPoint &pos, QEvent::Type type, Qt::MouseButton button)
{
// Which window are we hovering over? Always trigger as we don't always get move events before clicking
// We cannot use m_motionManager.windowAtPoint() as the window might not be visible
EffectWindowList windows = m_motionManager.managedWindows();
bool hovering = false;
EffectWindow *highlightCandidate = nullptr;
for (int i = 0; i < windows.size(); ++i) {
DataHash::const_iterator winData = m_windowData.constFind(windows.at(i));
if (winData == m_windowData.constEnd())
continue;
if (m_motionManager.transformedGeometry(windows.at(i)).contains(pos) &&
winData->visible && !winData->deleted) {
hovering = true;
if (windows.at(i) && m_highlightedWindow != windows.at(i))
highlightCandidate = windows.at(i);
break;
}
}
if (!hovering)
setHighlightedWindow(nullptr);
if (m_highlightedWindow && m_motionManager.transformedGeometry(m_highlightedWindow).contains(pos))
updateCloseWindow();
else if (m_closeView)
m_closeView->hide();
if (type == QEvent::MouseButtonRelease) {
if (highlightCandidate)
setHighlightedWindow(highlightCandidate);
if (button == Qt::LeftButton) {
if (hovering) {
// mouse is hovering above a window - use MouseActionsWindow
mouseActionWindow(m_leftButtonWindow);
} else {
// mouse is hovering above desktop - use MouseActionsDesktop
mouseActionDesktop(m_leftButtonDesktop);
}
}
if (button == Qt::MiddleButton) {
if (hovering) {
// mouse is hovering above a window - use MouseActionsWindow
mouseActionWindow(m_middleButtonWindow);
} else {
// mouse is hovering above desktop - use MouseActionsDesktop
mouseActionDesktop(m_middleButtonDesktop);
}
}
if (button == Qt::RightButton) {
if (hovering) {
// mouse is hovering above a window - use MouseActionsWindow
mouseActionWindow(m_rightButtonWindow);
} else {
// mouse is hovering above desktop - use MouseActionsDesktop
mouseActionDesktop(m_rightButtonDesktop);
}
}
} else if (highlightCandidate && !m_motionManager.areWindowsMoving())
setHighlightedWindow(highlightCandidate);
}
bool PresentWindowsEffect::touchDown(qint32 id, const QPointF &pos, quint32 time)
{
Q_UNUSED(time)
if (!m_activated) {
return false;
}
// only if we don't track a touch id yet
if (!m_touch.active) {
m_touch.active = true;
m_touch.id = id;
inputEventUpdate(pos.toPoint());
}
return true;
}
bool PresentWindowsEffect::touchMotion(qint32 id, const QPointF &pos, quint32 time)
{
Q_UNUSED(id)
Q_UNUSED(time)
if (!m_activated) {
return false;
}
if (m_touch.active && m_touch.id == id) {
// only update for the touch id we track
inputEventUpdate(pos.toPoint());
}
return true;
}
bool PresentWindowsEffect::touchUp(qint32 id, quint32 time)
{
Q_UNUSED(id)
Q_UNUSED(time)
if (!m_activated) {
return false;
}
if (m_touch.active && m_touch.id == id) {
m_touch.active = false;
m_touch.id = 0;
if (m_highlightedWindow) {
mouseActionWindow(m_leftButtonWindow);
}
}
return true;
}
void PresentWindowsEffect::mouseActionWindow(WindowMouseAction& action)
{
switch(action) {
case WindowActivateAction:
if (m_highlightedWindow)
effects->activateWindow(m_highlightedWindow);
setActive(false);
break;
case WindowExitAction:
setActive(false);
break;
case WindowToCurrentDesktopAction:
if (m_highlightedWindow)
effects->windowToDesktop(m_highlightedWindow, effects->currentDesktop());
break;
case WindowToAllDesktopsAction:
if (m_highlightedWindow) {
if (m_highlightedWindow->isOnAllDesktops())
effects->windowToDesktop(m_highlightedWindow, effects->currentDesktop());
else
effects->windowToDesktop(m_highlightedWindow, NET::OnAllDesktops);
}
break;
case WindowMinimizeAction:
if (m_highlightedWindow) {
if (m_highlightedWindow->isMinimized())
m_highlightedWindow->unminimize();
else
m_highlightedWindow->minimize();
}
break;
case WindowCloseAction:
if (m_highlightedWindow) {
m_highlightedWindow->closeWindow();
}
break;
default:
break;
}
}
void PresentWindowsEffect::mouseActionDesktop(DesktopMouseAction& action)
{
switch(action) {
case DesktopActivateAction:
if (m_highlightedWindow)
effects->activateWindow(m_highlightedWindow);
setActive(false);
break;
case DesktopExitAction:
setActive(false);
break;
case DesktopShowDesktopAction:
effects->setShowingDesktop(true);
setActive(false);
default:
break;
}
}
void PresentWindowsEffect::grabbedKeyboardEvent(QKeyEvent *e)
{
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 (m_mode == ModeCurrentDesktop && shortcut.contains(e->key() + e->modifiers())) {
toggleActive();
return;
}
if (m_mode == ModeAllDesktops && shortcutAll.contains(e->key() + e->modifiers())) {
toggleActiveAllDesktops();
return;
}
if (m_mode == ModeWindowClass && shortcutClass.contains(e->key() + e->modifiers())) {
toggleActiveClass();
return;
}
switch(e->key()) {
// Wrap only if not auto-repeating
case Qt::Key_Left:
setHighlightedWindow(relativeWindow(m_highlightedWindow, -1, 0, !e->isAutoRepeat()));
break;
case Qt::Key_Right:
setHighlightedWindow(relativeWindow(m_highlightedWindow, 1, 0, !e->isAutoRepeat()));
break;
case Qt::Key_Up:
setHighlightedWindow(relativeWindow(m_highlightedWindow, 0, -1, !e->isAutoRepeat()));
break;
case Qt::Key_Down:
setHighlightedWindow(relativeWindow(m_highlightedWindow, 0, 1, !e->isAutoRepeat()));
break;
case Qt::Key_Home:
setHighlightedWindow(relativeWindow(m_highlightedWindow, -1000, 0, false));
break;
case Qt::Key_End:
setHighlightedWindow(relativeWindow(m_highlightedWindow, 1000, 0, false));
break;
case Qt::Key_PageUp:
setHighlightedWindow(relativeWindow(m_highlightedWindow, 0, -1000, false));
break;
case Qt::Key_PageDown:
setHighlightedWindow(relativeWindow(m_highlightedWindow, 0, 1000, false));
break;
case Qt::Key_Backspace:
if (!m_windowFilter.isEmpty()) {
m_windowFilter.remove(m_windowFilter.length() - 1, 1);
updateFilterFrame();
rearrangeWindows();
}
return;
case Qt::Key_Escape:
setActive(false);
return;
case Qt::Key_Return:
case Qt::Key_Enter:
if (m_highlightedWindow)
effects->activateWindow(m_highlightedWindow);
setActive(false);
return;
case Qt::Key_Tab:
return; // Nothing at the moment
case Qt::Key_Delete:
if (!m_windowFilter.isEmpty()) {
m_windowFilter.clear();
updateFilterFrame();
rearrangeWindows();
}
break;
case 0:
return; // HACK: Workaround for Qt bug on unbound keys (#178547)
default:
if (!e->text().isEmpty()) {
m_windowFilter.append(e->text());
updateFilterFrame();
rearrangeWindows();
return;
}
break;
}
}
}
//-----------------------------------------------------------------------------
// Atom handling
void PresentWindowsEffect::slotPropertyNotify(EffectWindow* w, long a)
{
if (m_atomDesktop == XCB_ATOM_NONE && m_atomWindows == XCB_ATOM_NONE) {
return;
}
if (!w || (a != m_atomDesktop && a != m_atomWindows))
return; // Not our atom
if (a == m_atomDesktop) {
QByteArray byteData = w->readProperty(m_atomDesktop, m_atomDesktop, 32);
if (byteData.length() < 1) {
// Property was removed, end present windows
setActive(false);
return;
}
auto* data = reinterpret_cast<uint32_t*>(byteData.data());
if (!data[0]) {
// Purposely ending present windows by issuing a NULL target
setActive(false);
return;
}
// present windows is active so don't do anything
if (m_activated)
return;
int desktop = data[0];
if (desktop > effects->numberOfDesktops())
return;
if (desktop == -1)
toggleActiveAllDesktops();
else {
m_mode = ModeSelectedDesktop;
m_desktop = desktop;
m_managerWindow = w;
setActive(true);
}
} else if (a == m_atomWindows) {
QByteArray byteData = w->readProperty(m_atomWindows, m_atomWindows, 32);
if (byteData.length() < 1) {
// Property was removed, end present windows
setActive(false);
return;
}
auto* data = reinterpret_cast<uint32_t*>(byteData.data());
if (!data[0]) {
// Purposely ending present windows by issuing a NULL target
setActive(false);
return;
}
// present windows is active so don't do anything
if (m_activated)
return;
// for security clear selected windows
m_selectedWindows.clear();
int length = byteData.length() / sizeof(data[0]);
for (int i = 0; i < length; i++) {
EffectWindow* foundWin = effects->findWindow(data[i]);
if (!foundWin) {
qCDebug(KWINEFFECTS) << "Invalid window targetted for present windows. Requested:" << data[i];
continue;
}
m_selectedWindows.append(foundWin);
}
m_mode = ModeWindowGroup;
m_managerWindow = w;
setActive(true);
}
}
//-----------------------------------------------------------------------------
// Window rearranging
void PresentWindowsEffect::rearrangeWindows()
{
if (!m_activated)
return;
effects->addRepaintFull(); // Trigger the first repaint
if (m_closeView)
m_closeView->hide();
// Work out which windows are on which screens
EffectWindowList windowlist;
QList<EffectWindowList> windowlists;
for (int i = 0; i < effects->numScreens(); i++)
windowlists.append(EffectWindowList());
if (m_windowFilter.isEmpty()) {
windowlist = m_motionManager.managedWindows();
foreach (EffectWindow * w, m_motionManager.managedWindows()) {
DataHash::iterator winData = m_windowData.find(w);
if (winData == m_windowData.end() || winData->deleted)
continue; // don't include closed windows
windowlists[w->screen()].append(w);
winData->visible = true;
}
} else {
// Can we move this filtering somewhere else?
foreach (EffectWindow * w, m_motionManager.managedWindows()) {
DataHash::iterator winData = m_windowData.find(w);
if (winData == m_windowData.end() || winData->deleted)
continue; // don't include closed windows
if (w->caption().contains(m_windowFilter, Qt::CaseInsensitive) ||
w->windowClass().contains(m_windowFilter, Qt::CaseInsensitive) ||
w->windowRole().contains(m_windowFilter, Qt::CaseInsensitive)) {
windowlist.append(w);
windowlists[w->screen()].append(w);
winData->visible = true;
} else
winData->visible = false;
}
}
if (windowlist.isEmpty()) {
setHighlightedWindow(nullptr);
return;
}
// We filtered out the highlighted window
if (m_highlightedWindow) {
DataHash::iterator winData = m_windowData.find(m_highlightedWindow);
if (winData != m_windowData.end() && !winData->visible)
setHighlightedWindow(findFirstWindow());
} else
setHighlightedWindow(findFirstWindow());
int screens = effects->numScreens();
for (int screen = 0; screen < screens; screen++) {
EffectWindowList windows;
windows = windowlists[screen];
// Don't rearrange if the grid is the same size as what it was before to prevent
// windows moving to a better spot if one was filtered out.
if (m_layoutMode == LayoutRegularGrid &&
m_gridSizes[screen].columns &&
m_gridSizes[screen].rows &&
windows.size() < m_gridSizes[screen].columns * m_gridSizes[screen].rows &&
windows.size() > (m_gridSizes[screen].columns - 1) * m_gridSizes[screen].rows &&
windows.size() > m_gridSizes[screen].columns *(m_gridSizes[screen].rows - 1))
continue;
// No point continuing if there is no windows to process
if (!windows.count())
continue;
calculateWindowTransformations(windows, screen, m_motionManager);
}
// Resize text frames if required
QFontMetrics* metrics = nullptr; // All fonts are the same
foreach (EffectWindow * w, m_motionManager.managedWindows()) {
DataHash::iterator winData = m_windowData.find(w);
if (winData == m_windowData.end())
continue;
if (!metrics)
metrics = new QFontMetrics(winData->textFrame->font());
QRect geom = m_motionManager.targetGeometry(w).toRect();
QString string = metrics->elidedText(w->caption(), Qt::ElideRight, geom.width() * 0.9);
if (string != winData->textFrame->text())
winData->textFrame->setText(string);
}
delete metrics;
}
void PresentWindowsEffect::calculateWindowTransformations(EffectWindowList windowlist, int screen,
WindowMotionManager& motionManager, bool external)
{
if (m_layoutMode == LayoutRegularGrid)
calculateWindowTransformationsClosest(windowlist, screen, motionManager);
else if (m_layoutMode == LayoutFlexibleGrid)
calculateWindowTransformationsKompose(windowlist, screen, motionManager);
else
calculateWindowTransformationsNatural(windowlist, screen, motionManager);
// If called externally we don't need to remember this data
if (external)
m_windowData.clear();
}
static inline int distance(QPoint &pos1, QPoint &pos2)
{
const int xdiff = pos1.x() - pos2.x();
const int ydiff = pos1.y() - pos2.y();
return int(sqrt(float(xdiff*xdiff + ydiff*ydiff)));
}
void PresentWindowsEffect::calculateWindowTransformationsClosest(EffectWindowList windowlist, int screen,
WindowMotionManager& motionManager)
{
// This layout mode requires at least one window visible
if (windowlist.count() == 0)
return;
QRect area = effects->clientArea(ScreenArea, screen, effects->currentDesktop());
if (m_showPanel) // reserve space for the panel
area = effects->clientArea(MaximizeArea, screen, effects->currentDesktop());
int columns = int(ceil(sqrt(double(windowlist.count()))));
int rows = int(ceil(windowlist.count() / double(columns)));
// Remember the size for later
// If we are using this layout externally we don't need to remember m_gridSizes.
if (m_gridSizes.size() != 0) {
m_gridSizes[screen].columns = columns;
m_gridSizes[screen].rows = rows;
}
// Assign slots
int slotWidth = area.width() / columns;
int slotHeight = area.height() / rows;
QVector<EffectWindow*> takenSlots;
takenSlots.resize(rows*columns);
takenSlots.fill(0);
// precalculate all slot centers
QVector<QPoint> slotCenters;
slotCenters.resize(rows*columns);
for (int x = 0; x < columns; ++x)
for (int y = 0; y < rows; ++y) {
slotCenters[x + y*columns] = QPoint(area.x() + slotWidth * x + slotWidth / 2,
area.y() + slotHeight * y + slotHeight / 2);
}
// Assign each window to the closest available slot
EffectWindowList tmpList = windowlist; // use a QLinkedList copy instead?
QPoint otherPos;
while (!tmpList.isEmpty()) {
EffectWindow *w = tmpList.first();
int slotCandidate = -1, slotCandidateDistance = INT_MAX;
QPoint pos = w->geometry().center();
for (int i = 0; i < columns*rows; ++i) { // all slots
const int dist = distance(pos, slotCenters[i]);
if (dist < slotCandidateDistance) { // window is interested in this slot
EffectWindow *occupier = takenSlots[i];
Q_ASSERT(occupier != w);
if (!occupier || dist < distance((otherPos = occupier->geometry().center()), slotCenters[i])) {
// either nobody lives here, or we're better - takeover the slot if it's our best
slotCandidate = i;
slotCandidateDistance = dist;
}
}
}
Q_ASSERT(slotCandidate != -1);
if (takenSlots[slotCandidate])
tmpList << takenSlots[slotCandidate]; // occupier needs a new home now :p
tmpList.removeAll(w);
takenSlots[slotCandidate] = w; // ...and we rumble in =)
}
for (int slot = 0; slot < columns*rows; ++slot) {
EffectWindow *w = takenSlots[slot];
if (!w) // some slots might be empty
continue;
// Work out where the slot is
QRect target(
area.x() + (slot % columns) * slotWidth,
area.y() + (slot / columns) * slotHeight,
slotWidth, slotHeight);
target.adjust(10, 10, -10, -10); // Borders
double scale;
if (target.width() / double(w->width()) < target.height() / double(w->height())) {
// Center vertically
scale = target.width() / double(w->width());
target.moveTop(target.top() + (target.height() - int(w->height() * scale)) / 2);
target.setHeight(int(w->height() * scale));
} else {
// Center horizontally
scale = target.height() / double(w->height());
target.moveLeft(target.left() + (target.width() - int(w->width() * scale)) / 2);
target.setWidth(int(w->width() * scale));
}
// Don't scale the windows too much
if (scale > 2.0 || (scale > 1.0 && (w->width() > 300 || w->height() > 300))) {
scale = (w->width() > 300 || w->height() > 300) ? 1.0 : 2.0;
target = QRect(
target.center().x() - int(w->width() * scale) / 2,
target.center().y() - int(w->height() * scale) / 2,
scale * w->width(), scale * w->height());
}
motionManager.moveWindow(w, target);
}
}
void PresentWindowsEffect::calculateWindowTransformationsKompose(EffectWindowList windowlist, int screen,
WindowMotionManager& motionManager)
{
// This layout mode requires at least one window visible
if (windowlist.count() == 0)
return;
QRect availRect = effects->clientArea(ScreenArea, screen, effects->currentDesktop());
if (m_showPanel) // reserve space for the panel
availRect = effects->clientArea(MaximizeArea, screen, effects->currentDesktop());
std::sort(windowlist.begin(), windowlist.end()); // The location of the windows should not depend on the stacking order
// Following code is taken from Kompose 0.5.4, src/komposelayout.cpp
int spacing = 10;
int rows, columns;
double parentRatio = availRect.width() / (double)availRect.height();
// Use more columns than rows when parent's width > parent's height
if (parentRatio > 1) {
columns = (int)ceil(sqrt((double)windowlist.count()));
rows = (int)ceil((double)windowlist.count() / (double)columns);
} else {
rows = (int)ceil(sqrt((double)windowlist.count()));
columns = (int)ceil((double)windowlist.count() / (double)rows);
}
//qCDebug(KWINEFFECTS) << "Using " << rows << " rows & " << columns << " columns for " << windowlist.count() << " clients";
// Calculate width & height
int w = (availRect.width() - (columns + 1) * spacing) / columns;
int h = (availRect.height() - (rows + 1) * spacing) / rows;
EffectWindowList::iterator it(windowlist.begin());
QList<QRect> geometryRects;
QList<int> maxRowHeights;
// Process rows
for (int i = 0; i < rows; ++i) {
int xOffsetFromLastCol = 0;
int maxHeightInRow = 0;
// Process columns
for (int j = 0; j < columns; ++j) {
EffectWindow* window;
// Check for end of List
if (it == windowlist.end())
break;
window = *it;
// Calculate width and height of widget
double ratio = aspectRatio(window);
int widgetw = 100;
int widgeth = 100;
int usableW = w;
int usableH = h;
// use width of two boxes if there is no right neighbour
if (window == windowlist.last() && j != columns - 1) {
usableW = 2 * w;
}
++it; // We need access to the neighbour in the following
// expand if right neighbour has ratio < 1
if (j != columns - 1 && it != windowlist.end() && aspectRatio(*it) < 1) {
int addW = w - widthForHeight(*it, h);
if (addW > 0) {
usableW = w + addW;
}
}
if (ratio == -1) {
widgetw = w;
widgeth = h;
} else {
double widthByHeight = widthForHeight(window, usableH);
double heightByWidth = heightForWidth(window, usableW);
if ((ratio >= 1.0 && heightByWidth <= usableH) ||
(ratio < 1.0 && widthByHeight > usableW)) {
widgetw = usableW;
widgeth = (int)heightByWidth;
} else if ((ratio < 1.0 && widthByHeight <= usableW) ||
(ratio >= 1.0 && heightByWidth > usableH)) {
widgeth = usableH;
widgetw = (int)widthByHeight;
}
// Don't upscale large-ish windows
if (widgetw > window->width() && (window->width() > 300 || window->height() > 300)) {
widgetw = window->width();
widgeth = window->height();
}
}
// Set the Widget's size
int alignmentXoffset = 0;
int alignmentYoffset = 0;
if (i == 0 && h > widgeth)
alignmentYoffset = h - widgeth;
if (j == 0 && w > widgetw)
alignmentXoffset = w - widgetw;
QRect geom(availRect.x() + j *(w + spacing) + spacing + alignmentXoffset + xOffsetFromLastCol,
availRect.y() + i *(h + spacing) + spacing + alignmentYoffset,
widgetw, widgeth);
geometryRects.append(geom);
// Set the x offset for the next column
if (alignmentXoffset == 0)
xOffsetFromLastCol += widgetw - w;
if (maxHeightInRow < widgeth)
maxHeightInRow = widgeth;
}
maxRowHeights.append(maxHeightInRow);
}
int topOffset = 0;
for (int i = 0; i < rows; i++) {
for (int j = 0; j < columns; j++) {
int pos = i * columns + j;
if (pos >= windowlist.count())
break;
EffectWindow* window = windowlist[pos];
QRect target = geometryRects[pos];
target.setY(target.y() + topOffset);
// @Marrtin: any idea what this is good for?
// DataHash::iterator winData = m_windowData.find(window);
// if (winData != m_windowData.end())
// winData->slot = pos;
motionManager.moveWindow(window, target);
//qCDebug(KWINEFFECTS) << "Window '" << window->caption() << "' gets moved to (" <<
// mWindowData[window].area.left() << "; " << mWindowData[window].area.right() <<
// "), scale: " << mWindowData[window].scale << endl;
}
if (maxRowHeights[i] - h > 0)
topOffset += maxRowHeights[i] - h;
}
}
void PresentWindowsEffect::calculateWindowTransformationsNatural(EffectWindowList windowlist, int screen,
WindowMotionManager& motionManager)
{
// If windows do not overlap they scale into nothingness, fix by resetting. To reproduce
// just have a single window on a Xinerama screen or have two windows that do not touch.
// TODO: Work out why this happens, is most likely a bug in the manager.
foreach (EffectWindow * w, windowlist)
if (motionManager.transformedGeometry(w) == w->geometry())
motionManager.reset(w);
if (windowlist.count() == 1) {
// Just move the window to its original location to save time
if (effects->clientArea(FullScreenArea, windowlist[0]).contains(windowlist[0]->geometry())) {
motionManager.moveWindow(windowlist[0], windowlist[0]->geometry());
return;
}
}
// As we are using pseudo-random movement (See "slot") we need to make sure the list
// is always sorted the same way no matter which window is currently active.
std::sort(windowlist.begin(), windowlist.end());
QRect area = effects->clientArea(ScreenArea, screen, effects->currentDesktop());
if (m_showPanel) // reserve space for the panel
area = effects->clientArea(MaximizeArea, screen, effects->currentDesktop());
QRect bounds = area;
int direction = 0;
QHash<EffectWindow*, QRect> targets;
QHash<EffectWindow*, int> directions;
foreach (EffectWindow * w, windowlist) {
bounds = bounds.united(w->geometry());
targets[w] = w->geometry();
// Reuse the unused "slot" as a preferred direction attribute. This is used when the window
// is on the edge of the screen to try to use as much screen real estate as possible.
directions[w] = direction;
direction++;
if (direction == 4)
direction = 0;
}
// Iterate over all windows, if two overlap push them apart _slightly_ as we try to
// brute-force the most optimal positions over many iterations.
bool overlap;
do {
overlap = false;
foreach (EffectWindow * w, windowlist) {
QRect *target_w = &targets[w];
foreach (EffectWindow * e, windowlist) {
if (w == e)
continue;
QRect *target_e = &targets[e];
if (target_w->adjusted(-5, -5, 5, 5).intersects(target_e->adjusted(-5, -5, 5, 5))) {
overlap = true;
// Determine pushing direction
QPoint diff(target_e->center() - target_w->center());
// Prevent dividing by zero and non-movement
if (diff.x() == 0 && diff.y() == 0)
diff.setX(1);
// Try to keep screen aspect ratio
//if (bounds.height() / bounds.width() > area.height() / area.width())
// diff.setY(diff.y() / 2);
//else
// diff.setX(diff.x() / 2);
// Approximate a vector of between 10px and 20px in magnitude in the same direction
diff *= m_accuracy / double(diff.manhattanLength());
// Move both windows apart
target_w->translate(-diff);
target_e->translate(diff);
// Try to keep the bounding rect the same aspect as the screen so that more
// screen real estate is utilised. We do this by splitting the screen into nine
// equal sections, if the window center is in any of the corner sections pull the
// window towards the outer corner. If it is in any of the other edge sections
// alternate between each corner on that edge. We don't want to determine it
// randomly as it will not produce consistant locations when using the filter.
// Only move one window so we don't cause large amounts of unnecessary zooming
// in some situations. We need to do this even when expanding later just in case
// all windows are the same size.
// (We are using an old bounding rect for this, hopefully it doesn't matter)
int xSection = (target_w->x() - bounds.x()) / (bounds.width() / 3);
int ySection = (target_w->y() - bounds.y()) / (bounds.height() / 3);
diff = QPoint(0, 0);
if (xSection != 1 || ySection != 1) { // Remove this if you want the center to pull as well
if (xSection == 1)
xSection = (directions[w] / 2 ? 2 : 0);
if (ySection == 1)
ySection = (directions[w] % 2 ? 2 : 0);
}
if (xSection == 0 && ySection == 0)
diff = QPoint(bounds.topLeft() - target_w->center());
if (xSection == 2 && ySection == 0)
diff = QPoint(bounds.topRight() - target_w->center());
if (xSection == 2 && ySection == 2)
diff = QPoint(bounds.bottomRight() - target_w->center());
if (xSection == 0 && ySection == 2)
diff = QPoint(bounds.bottomLeft() - target_w->center());
if (diff.x() != 0 || diff.y() != 0) {
diff *= m_accuracy / double(diff.manhattanLength());
target_w->translate(diff);
}
// Update bounding rect
bounds = bounds.united(*target_w);
bounds = bounds.united(*target_e);
}
}
}
} while (overlap);
// Work out scaling by getting the most top-left and most bottom-right window coords.
// The 20's and 10's are so that the windows don't touch the edge of the screen.
double scale;
if (bounds == area)
scale = 1.0; // Don't add borders to the screen
else if (area.width() / double(bounds.width()) < area.height() / double(bounds.height()))
scale = (area.width() - 20) / double(bounds.width());
else
scale = (area.height() - 20) / double(bounds.height());
// Make bounding rect fill the screen size for later steps
bounds = QRect(
(bounds.x() * scale - (area.width() - 20 - bounds.width() * scale) / 2 - 10) / scale,
(bounds.y() * scale - (area.height() - 20 - bounds.height() * scale) / 2 - 10) / scale,
area.width() / scale,
area.height() / scale
);
// Move all windows back onto the screen and set their scale
QHash<EffectWindow*, QRect>::iterator target = targets.begin();
while (target != targets.end()) {
target->setRect((target->x() - bounds.x()) * scale + area.x(),
(target->y() - bounds.y()) * scale + area.y(),
target->width() * scale,
target->height() * scale
);
++target;
}
// Try to fill the gaps by enlarging windows if they have the space
if (m_fillGaps) {
// Don't expand onto or over the border
QRegion borderRegion(area.adjusted(-200, -200, 200, 200));
borderRegion ^= area.adjusted(10 / scale, 10 / scale, -10 / scale, -10 / scale);
bool moved;
do {
moved = false;
foreach (EffectWindow * w, windowlist) {
QRect oldRect;
QRect *target = &targets[w];
// This may cause some slight distortion if the windows are enlarged a large amount
int widthDiff = m_accuracy;
int heightDiff = heightForWidth(w, target->width() + widthDiff) - target->height();
int xDiff = widthDiff / 2; // Also move a bit in the direction of the enlarge, allows the
int yDiff = heightDiff / 2; // center windows to be enlarged if there is gaps on the side.
// heightDiff (and yDiff) will be re-computed after each successful enlargement attempt
// so that the error introduced in the window's aspect ratio is minimized
// Attempt enlarging to the top-right
oldRect = *target;
target->setRect(target->x() + xDiff,
target->y() - yDiff - heightDiff,
target->width() + widthDiff,
target->height() + heightDiff
);
if (isOverlappingAny(w, targets, borderRegion))
*target = oldRect;
else {
moved = true;
heightDiff = heightForWidth(w, target->width() + widthDiff) - target->height();
yDiff = heightDiff / 2;
}
// Attempt enlarging to the bottom-right
oldRect = *target;
target->setRect(
target->x() + xDiff,
target->y() + yDiff,
target->width() + widthDiff,
target->height() + heightDiff
);
if (isOverlappingAny(w, targets, borderRegion))
*target = oldRect;
else {
moved = true;
heightDiff = heightForWidth(w, target->width() + widthDiff) - target->height();
yDiff = heightDiff / 2;
}
// Attempt enlarging to the bottom-left
oldRect = *target;
target->setRect(
target->x() - xDiff - widthDiff,
target->y() + yDiff,
target->width() + widthDiff,
target->height() + heightDiff
);
if (isOverlappingAny(w, targets, borderRegion))
*target = oldRect;
else {
moved = true;
heightDiff = heightForWidth(w, target->width() + widthDiff) - target->height();
yDiff = heightDiff / 2;
}
// Attempt enlarging to the top-left
oldRect = *target;
target->setRect(
target->x() - xDiff - widthDiff,
target->y() - yDiff - heightDiff,
target->width() + widthDiff,
target->height() + heightDiff
);
if (isOverlappingAny(w, targets, borderRegion))
*target = oldRect;
else
moved = true;
}
} while (moved);
// The expanding code above can actually enlarge windows over 1.0/2.0 scale, we don't like this
// We can't add this to the loop above as it would cause a never-ending loop so we have to make
// do with the less-than-optimal space usage with using this method.
foreach (EffectWindow * w, windowlist) {
QRect *target = &targets[w];
double scale = target->width() / double(w->width());
if (scale > 2.0 || (scale > 1.0 && (w->width() > 300 || w->height() > 300))) {
scale = (w->width() > 300 || w->height() > 300) ? 1.0 : 2.0;
target->setRect(
target->center().x() - int(w->width() * scale) / 2,
target->center().y() - int(w->height() * scale) / 2,
w->width() * scale,
w->height() * scale);
}
}
}
// Notify the motion manager of the targets
foreach (EffectWindow * w, windowlist)
motionManager.moveWindow(w, targets.value(w));
}
bool PresentWindowsEffect::isOverlappingAny(EffectWindow *w, const QHash<EffectWindow*, QRect> &targets, const QRegion &border)
{
QHash<EffectWindow*, QRect>::const_iterator winTarget = targets.find(w);
if (winTarget == targets.constEnd())
return false;
if (border.intersects(*winTarget))
return true;
// Is there a better way to do this?
QHash<EffectWindow*, QRect>::const_iterator target;
for (target = targets.constBegin(); target != targets.constEnd(); ++target) {
if (target == winTarget)
continue;
if (winTarget->adjusted(-5, -5, 5, 5).intersects(target->adjusted(-5, -5, 5, 5)))
return true;
}
return false;
}
//-----------------------------------------------------------------------------
// Activation
void PresentWindowsEffect::setActive(bool active)
{
if (effects->activeFullScreenEffect() && effects->activeFullScreenEffect() != this)
return;
if (m_activated == active)
return;
m_activated = active;
if (m_activated) {
effects->setShowingDesktop(false);
m_needInitialSelection = true;
m_closeButtonCorner = (Qt::Corner)effects->kwinOption(KWin::CloseButtonCorner).toInt();
m_decalOpacity = 0.0;
m_highlightedWindow = nullptr;
m_windowFilter.clear();
if (!(m_doNotCloseWindows || m_closeView)) {
m_closeView = new CloseWindowView();
connect(m_closeView, &EffectQuickView::repaintNeeded, this, []() {
effects->addRepaintFull();
});
connect(m_closeView, &CloseWindowView::requestClose, this, &PresentWindowsEffect::closeWindow);
}
// Add every single window to m_windowData (Just calling [w] creates it)
foreach (EffectWindow * w, effects->stackingOrder()) {
DataHash::iterator winData;
if ((winData = m_windowData.find(w)) != m_windowData.end()) {
winData->visible = isVisibleWindow(w);
continue; // Happens if we reactivate before the ending animation finishes
}
winData = m_windowData.insert(w, WindowData());
winData->visible = isVisibleWindow(w);
winData->deleted = false;
winData->referenced = false;
winData->opacity = 0.0;
if (w->isOnCurrentDesktop() && !w->isMinimized())
winData->opacity = 1.0;
winData->highlight = 1.0;
winData->textFrame = effects->effectFrame(EffectFrameUnstyled, false);
QFont font;
font.setBold(true);
font.setPointSize(12);
winData->textFrame->setFont(font);
winData->iconFrame = effects->effectFrame(EffectFrameUnstyled, false);
winData->iconFrame->setAlignment(Qt::AlignRight | Qt::AlignBottom);
winData->iconFrame->setIcon(w->icon());
winData->iconFrame->setIconSize(QSize(32, 32));
}
// Filter out special windows such as panels and taskbars
foreach (EffectWindow * w, effects->stackingOrder()) {
if (isSelectableWindow(w)) {
m_motionManager.manage(w);
}
}
if (m_motionManager.managedWindows().isEmpty() ||
((m_motionManager.managedWindows().count() == 1) && m_motionManager.managedWindows().first()->isOnCurrentDesktop() &&
(m_ignoreMinimized || !m_motionManager.managedWindows().first()->isMinimized()))) {
// No point triggering if there is nothing to do
m_activated = false;
DataHash::iterator i = m_windowData.begin();
while (i != m_windowData.end()) {
delete i.value().textFrame;
delete i.value().iconFrame;
++i;
}
m_windowData.clear();
m_motionManager.unmanageAll();
return;
}
// Create temporary input window to catch mouse events
effects->startMouseInterception(this, Qt::PointingHandCursor);
m_hasKeyboardGrab = effects->grabKeyboard(this);
effects->setActiveFullScreenEffect(this);
reCreateGrids();
rearrangeWindows();
setHighlightedWindow(effects->activeWindow());
foreach (EffectWindow * w, effects->stackingOrder()) {
w->setData(WindowForceBlurRole, QVariant(true));
w->setData(WindowForceBackgroundContrastRole, QVariant(true));
}
} else {
m_needInitialSelection = false;
if (m_highlightedWindow)
effects->setElevatedWindow(m_highlightedWindow, false);
// Fade in/out all windows
EffectWindow *activeWindow = effects->activeWindow();
int desktop = effects->currentDesktop();
if (activeWindow && !activeWindow->isOnAllDesktops())
desktop = activeWindow->desktop();
foreach (EffectWindow * w, effects->stackingOrder()) {
DataHash::iterator winData = m_windowData.find(w);
if (winData != m_windowData.end())
winData->visible = (w->isOnDesktop(desktop) || w->isOnAllDesktops()) &&
!w->isMinimized();
}
if (m_closeView)
m_closeView->hide();
// Move all windows back to their original position
foreach (EffectWindow * w, m_motionManager.managedWindows())
m_motionManager.moveWindow(w, w->geometry());
if (m_filterFrame) {
m_filterFrame->free();
}
m_windowFilter.clear();
m_selectedWindows.clear();
effects->stopMouseInterception(this);
if (m_hasKeyboardGrab)
effects->ungrabKeyboard();
m_hasKeyboardGrab = false;
// destroy atom on manager window
if (m_managerWindow) {
if (m_mode == ModeSelectedDesktop && m_atomDesktop != XCB_ATOM_NONE)
m_managerWindow->deleteProperty(m_atomDesktop);
else if (m_mode == ModeWindowGroup && m_atomWindows != XCB_ATOM_NONE)
m_managerWindow->deleteProperty(m_atomWindows);
m_managerWindow = nullptr;
}
}
effects->addRepaintFull(); // Trigger the first repaint
}
//-----------------------------------------------------------------------------
// Filter box
void PresentWindowsEffect::updateFilterFrame()
{
QRect area = effects->clientArea(ScreenArea, effects->activeScreen(), effects->currentDesktop());
if (!m_filterFrame) {
m_filterFrame = effects->effectFrame(EffectFrameStyled, false);
QFont font;
font.setPointSize(font.pointSize() * 2);
font.setBold(true);
m_filterFrame->setFont(font);
}
m_filterFrame->setPosition(QPoint(area.x() + area.width() / 2, area.y() + area.height() / 2));
m_filterFrame->setText(i18n("Filter:\n%1", m_windowFilter));
}
//-----------------------------------------------------------------------------
// Helper functions
bool PresentWindowsEffect::isSelectableWindow(EffectWindow *w)
{
if (!w->isOnCurrentActivity())
return false;
if (w->isSpecialWindow() || w->isUtility())
return false;
if (w->isDeleted())
return false;
if (!w->acceptsFocus())
return false;
if (w->isSkipSwitcher())
return false;
if (m_ignoreMinimized && w->isMinimized())
return false;
switch(m_mode) {
default:
case ModeAllDesktops:
return true;
case ModeCurrentDesktop:
return w->isOnCurrentDesktop();
case ModeSelectedDesktop:
return w->isOnDesktop(m_desktop);
case ModeWindowGroup:
return m_selectedWindows.contains(w);
case ModeWindowClass:
return m_class == w->windowClass();
}
}
bool PresentWindowsEffect::isVisibleWindow(EffectWindow *w)
{
if (w->isDesktop())
return true;
return isSelectableWindow(w);
}
void PresentWindowsEffect::setHighlightedWindow(EffectWindow *w)
{
if (w == m_highlightedWindow || (w != nullptr && !m_motionManager.isManaging(w)))
return;
if (m_closeView)
m_closeView->hide();
if (m_highlightedWindow) {
effects->setElevatedWindow(m_highlightedWindow, false);
m_highlightedWindow->addRepaintFull(); // Trigger the first repaint
}
m_highlightedWindow = w;
if (m_highlightedWindow) {
effects->setElevatedWindow(m_highlightedWindow, true);
m_highlightedWindow->addRepaintFull(); // Trigger the first repaint
}
updateCloseWindow();
}
void PresentWindowsEffect::updateCloseWindow()
{
if (!m_closeView || m_doNotCloseWindows)
return;
if (!m_activated || !m_highlightedWindow || m_highlightedWindow->isDesktop()) {
m_closeView->hide();
return;
}
if (m_closeView->isVisible())
return;
const QRectF rect(m_motionManager.targetGeometry(m_highlightedWindow));
if (2*m_closeView->geometry().width() > rect.width() && 2*m_closeView->geometry().height() > rect.height()) {
// not for tiny windows (eg. with many windows) - they might become unselectable
m_closeView->hide();
return;
}
QRect cvr(QPoint(0,0), m_closeView->size());
switch (m_closeButtonCorner)
{
case Qt::TopLeftCorner:
default:
cvr.moveTopLeft(rect.topLeft().toPoint()); break;
case Qt::TopRightCorner:
cvr.moveTopRight(rect.topRight().toPoint()); break;
case Qt::BottomLeftCorner:
cvr.moveBottomLeft(rect.bottomLeft().toPoint()); break;
case Qt::BottomRightCorner:
cvr.moveBottomRight(rect.bottomRight().toPoint()); break;
}
m_closeView->setGeometry(cvr);
if (rect.contains(effects->cursorPos())) {
m_closeView->show();
m_closeView->disarm();
}
else
m_closeView->hide();
}
void PresentWindowsEffect::closeWindow()
{
if (m_highlightedWindow)
m_highlightedWindow->closeWindow();
}
EffectWindow* PresentWindowsEffect::relativeWindow(EffectWindow *w, int xdiff, int ydiff, bool wrap) const
{
if (!w)
return m_motionManager.managedWindows().first();
// TODO: Is it possible to select hidden windows?
EffectWindow* next;
QRect area = effects->clientArea(FullArea, 0, effects->currentDesktop());
QRect detectRect;
// Detect across the width of the desktop
if (xdiff != 0) {
if (xdiff > 0) {
// Detect right
for (int i = 0; i < xdiff; i++) {
QRectF wArea = m_motionManager.transformedGeometry(w);
detectRect = QRect(0, wArea.y(), area.width(), wArea.height());
next = nullptr;
foreach (EffectWindow * e, m_motionManager.managedWindows()) {
DataHash::const_iterator winData = m_windowData.find(e);
if (winData == m_windowData.end() || !winData->visible)
continue;
QRectF eArea = m_motionManager.transformedGeometry(e);
if (eArea.intersects(detectRect) &&
eArea.x() > wArea.x()) {
if (next == nullptr)
next = e;
else {
QRectF nArea = m_motionManager.transformedGeometry(next);
if (eArea.x() < nArea.x())
next = e;
}
}
}
if (next == nullptr) {
if (wrap) // We are at the right-most window, now get the left-most one to wrap
return relativeWindow(w, -1000, 0, false);
break; // No more windows to the right
}
w = next;
}
return w;
} else {
// Detect left
for (int i = 0; i < -xdiff; i++) {
QRectF wArea = m_motionManager.transformedGeometry(w);
detectRect = QRect(0, wArea.y(), area.width(), wArea.height());
next = nullptr;
foreach (EffectWindow * e, m_motionManager.managedWindows()) {
DataHash::const_iterator winData = m_windowData.find(e);
if (winData == m_windowData.end() || !winData->visible)
continue;
QRectF eArea = m_motionManager.transformedGeometry(e);
if (eArea.intersects(detectRect) &&
eArea.x() + eArea.width() < wArea.x() + wArea.width()) {
if (next == nullptr)
next = e;
else {
QRectF nArea = m_motionManager.transformedGeometry(next);
if (eArea.x() + eArea.width() > nArea.x() + nArea.width())
next = e;
}
}
}
if (next == nullptr) {
if (wrap) // We are at the left-most window, now get the right-most one to wrap
return relativeWindow(w, 1000, 0, false);
break; // No more windows to the left
}
w = next;
}
return w;
}
}
// Detect across the height of the desktop
if (ydiff != 0) {
if (ydiff > 0) {
// Detect down
for (int i = 0; i < ydiff; i++) {
QRectF wArea = m_motionManager.transformedGeometry(w);
detectRect = QRect(wArea.x(), 0, wArea.width(), area.height());
next = nullptr;
foreach (EffectWindow * e, m_motionManager.managedWindows()) {
DataHash::const_iterator winData = m_windowData.find(e);
if (winData == m_windowData.end() || !winData->visible)
continue;
QRectF eArea = m_motionManager.transformedGeometry(e);
if (eArea.intersects(detectRect) &&
eArea.y() > wArea.y()) {
if (next == nullptr)
next = e;
else {
QRectF nArea = m_motionManager.transformedGeometry(next);
if (eArea.y() < nArea.y())
next = e;
}
}
}
if (next == nullptr) {
if (wrap) // We are at the bottom-most window, now get the top-most one to wrap
return relativeWindow(w, 0, -1000, false);
break; // No more windows to the bottom
}
w = next;
}
return w;
} else {
// Detect up
for (int i = 0; i < -ydiff; i++) {
QRectF wArea = m_motionManager.transformedGeometry(w);
detectRect = QRect(wArea.x(), 0, wArea.width(), area.height());
next = nullptr;
foreach (EffectWindow * e, m_motionManager.managedWindows()) {
DataHash::const_iterator winData = m_windowData.find(e);
if (winData == m_windowData.end() || !winData->visible)
continue;
QRectF eArea = m_motionManager.transformedGeometry(e);
if (eArea.intersects(detectRect) &&
eArea.y() + eArea.height() < wArea.y() + wArea.height()) {
if (next == nullptr)
next = e;
else {
QRectF nArea = m_motionManager.transformedGeometry(next);
if (eArea.y() + eArea.height() > nArea.y() + nArea.height())
next = e;
}
}
}
if (next == nullptr) {
if (wrap) // We are at the top-most window, now get the bottom-most one to wrap
return relativeWindow(w, 0, 1000, false);
break; // No more windows to the top
}
w = next;
}
return w;
}
}
abort(); // Should never get here
}
EffectWindow* PresentWindowsEffect::findFirstWindow() const
{
EffectWindow *topLeft = nullptr;
QRectF topLeftGeometry;
foreach (EffectWindow * w, m_motionManager.managedWindows()) {
DataHash::const_iterator winData = m_windowData.find(w);
if (winData == m_windowData.end())
continue;
QRectF geometry = m_motionManager.transformedGeometry(w);
if (winData->visible == false)
continue; // Not visible
if (winData->deleted)
continue; // Window has been closed
if (topLeft == nullptr) {
topLeft = w;
topLeftGeometry = geometry;
} else if (geometry.x() < topLeftGeometry.x() || geometry.y() < topLeftGeometry.y()) {
topLeft = w;
topLeftGeometry = geometry;
}
}
return topLeft;
}
void PresentWindowsEffect::globalShortcutChanged(QAction *action, const QKeySequence& seq)
{
if (action->objectName() == QStringLiteral("Expose")) {
shortcut.clear();
shortcut.append(seq);
} else if (action->objectName() == QStringLiteral("ExposeAll")) {
shortcutAll.clear();
shortcutAll.append(seq);
} else if (action->objectName() == QStringLiteral("ExposeClass")) {
shortcutClass.clear();
shortcutClass.append(seq);
}
}
bool PresentWindowsEffect::isActive() const
{
return (m_activated || m_motionManager.managingWindows()) && !effects->isScreenLocked();
}
void PresentWindowsEffect::reCreateGrids()
{
m_gridSizes.clear();
for (int i = 0; i < effects->numScreens(); ++i) {
m_gridSizes.append(GridSize());
}
rearrangeWindows();
}
CloseWindowView::CloseWindowView(QObject *parent)
: EffectQuickScene(parent)
{
setSource(QUrl(QStandardPaths::locate(QStandardPaths::GenericDataLocation, QStringLiteral("kwin/effects/presentwindows/main.qml"))));
if (QQuickItem *item = rootItem()) {
connect(item, SIGNAL(clicked()), this, SLOT(clicked()));
setGeometry(QRect(QPoint(), QSize(item->implicitWidth(), item->implicitHeight())));
}
m_armTimer.restart();
}
void CloseWindowView::clicked()
{
// 50ms until the window is elevated (seen!) and 300ms more to be "realized" by the user.
if (m_armTimer.hasExpired(350)) {
emit requestClose();
}
}
void CloseWindowView::disarm()
{
m_armTimer.restart();
}
} // namespace
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