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kwin/src/placement.cpp
Vlad Zahorodnii 7120348932 Make checkWorkspacePosition() work without client geometry 
A good portion of geometry handling code was written during the X11
times. The main difference between X11 and Wayland is that kwin doesn't
know where a window will exactly be after resize() or moveResize().

In order to handle Wayland specifics, every window has a bounding
geometry that is being manipulated by move(), resize(), and moveResize().
The frameGeometry(), the clientGeometry(), and the bufferGeometry() are
not manipulated by move(), resize(), and moveResize() directly. Almost
everything that manipulates geometry should use moveResizeGeometry().

This creates a problem though, since the clientGeometry() will be
updated only after the client provides a new buffer, kwin has absolutely
no idea what the client geometry for a given move resize geometry will
be.

Another side of the coin is that decoration updates are performed
asynchronously on wayland, meaning that you cannot use border properties
for anything related to geometry handling and you should avoid using
borderLeft(), borderTop(), borderRight(), and borderBottom() in general.

clientGeometry(), bufferGeometry(), and border*() are good only if you
want to forward an event or render something. They can't be used for
manipulating the geometry.

Unfortunately, AbstractClient::checkWorkspacePosition() needs both,
which is a bit of a problem. To add more oil to the fire, contents
of a decorated window can be snapped to a screen edge. This goes against
the nature of geometry updates on wayland, where we try to indicate
the bounds of the frame geometry and avoid using client and buffer
geometries.

In order to make geometry handling more correct on wayland, this change
removes the ability to snap the contents of a decorated window to a
screen edge. This allows to avoid using the client geometry in
checkWorkspacePosition(), which is a very important function that ensures
the window is inside the workspace.

There is nothing wrong with snapping the frame rather than its contents
and that's what kwin used to do. It was changed with the removal of
"Display borders on maximized windows" option, the relevant commit
didn't provide any reasoning behind the change.
2022-01-25 17:56:40 +00:00

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/*
KWin - the KDE window manager
This file is part of the KDE project.
SPDX-FileCopyrightText: 1999, 2000 Matthias Ettrich <ettrich@kde.org>
SPDX-FileCopyrightText: 1997-2002 Cristian Tibirna <tibirna@kde.org>
SPDX-FileCopyrightText: 2003 Lubos Lunak <l.lunak@kde.org>
SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "placement.h"
#ifndef KCMRULES
#include "workspace.h"
#include "x11client.h"
#include "cursor.h"
#include "options.h"
#include "rules.h"
#include "screens.h"
#include "virtualdesktops.h"
#endif
#include <QTextStream>
#include <QTimer>
namespace KWin
{
#ifndef KCMRULES
KWIN_SINGLETON_FACTORY(Placement)
Placement::Placement(QObject*)
{
reinitCascading(0);
}
Placement::~Placement()
{
s_self = nullptr;
}
/**
* Places the client \a c according to the workspace's layout policy
*/
void Placement::place(AbstractClient *c, const QRect &area)
{
Policy policy = c->rules()->checkPlacement(Default);
if (policy != Default) {
place(c, area, policy);
return;
}
if (c->isUtility())
placeUtility(c, area, options->placement());
else if (c->isDialog())
placeDialog(c, area, options->placement());
else if (c->isSplash())
placeOnMainWindow(c, area); // on mainwindow, if any, otherwise centered
else if (c->isOnScreenDisplay() || c->isNotification() || c->isCriticalNotification())
placeOnScreenDisplay(c, area);
else if (c->isTransient() && c->hasTransientPlacementHint())
placeTransient(c);
else if (c->isTransient() && c->surface())
placeDialog(c, area, options->placement());
else
place(c, area, options->placement());
}
void Placement::place(AbstractClient *c, const QRect &area, Policy policy, Policy nextPlacement)
{
if (policy == Unknown || policy == Default)
policy = options->placement();
switch (policy) {
case NoPlacement:
return;
case Random:
placeAtRandom(c, area, nextPlacement);
break;
case Cascade:
placeCascaded(c, area, nextPlacement);
break;
case Centered:
placeCentered(c, area, nextPlacement);
break;
case ZeroCornered:
placeZeroCornered(c, area, nextPlacement);
break;
case UnderMouse:
placeUnderMouse(c, area, nextPlacement);
break;
case OnMainWindow:
placeOnMainWindow(c, area, nextPlacement);
break;
case Maximizing:
placeMaximizing(c, area, nextPlacement);
break;
default:
placeSmart(c, area, nextPlacement);
}
}
/**
* Place the client \a c according to a simply "random" placement algorithm.
*/
void Placement::placeAtRandom(AbstractClient* c, const QRect& area, Policy /*next*/)
{
Q_ASSERT(area.isValid());
const int step = 24;
static int px = step;
static int py = 2 * step;
int tx, ty;
if (px < area.x()) {
px = area.x();
}
if (py < area.y()) {
py = area.y();
}
px += step;
py += 2 * step;
if (px > area.width() / 2) {
px = area.x() + step;
}
if (py > area.height() / 2) {
py = area.y() + step;
}
tx = px;
ty = py;
if (tx + c->width() > area.right()) {
tx = area.right() - c->width();
if (tx < 0)
tx = 0;
px = area.x();
}
if (ty + c->height() > area.bottom()) {
ty = area.bottom() - c->height();
if (ty < 0)
ty = 0;
py = area.y();
}
c->move(QPoint(tx, ty));
}
// TODO: one day, there'll be C++11 ...
static inline bool isIrrelevant(const AbstractClient *client, const AbstractClient *regarding, int desktop)
{
if (!client)
return true;
if (client == regarding)
return true;
if (!client->isShown() || client->isShade())
return true;
if (!client->isOnDesktop(desktop))
return true;
if (!client->isOnCurrentActivity())
return true;
if (client->isDesktop())
return true;
return false;
}
/**
* Place the client \a c according to a really smart placement algorithm :-)
*/
void Placement::placeSmart(AbstractClient* c, const QRect& area, Policy /*next*/)
{
Q_ASSERT(area.isValid());
/*
* SmartPlacement by Cristian Tibirna (tibirna@kde.org)
* adapted for kwm (16-19jan98) and for kwin (16Nov1999) using (with
* permission) ideas from fvwm, authored by
* Anthony Martin (amartin@engr.csulb.edu).
* Xinerama supported added by Balaji Ramani (balaji@yablibli.com)
* with ideas from xfce.
*/
if (!c->frameGeometry().isValid()) {
return;
}
const int none = 0, h_wrong = -1, w_wrong = -2; // overlap types
long int overlap, min_overlap = 0;
int x_optimal, y_optimal;
int possible;
int desktop = c->desktop() == 0 || c->isOnAllDesktops() ? VirtualDesktopManager::self()->current() : c->desktop();
int cxl, cxr, cyt, cyb; //temp coords
int xl, xr, yt, yb; //temp coords
int basket; //temp holder
// get the maximum allowed windows space
int x = area.left();
int y = area.top();
x_optimal = x; y_optimal = y;
//client gabarit
int ch = c->height() - 1;
int cw = c->width() - 1;
bool first_pass = true; //CT lame flag. Don't like it. What else would do?
//loop over possible positions
do {
//test if enough room in x and y directions
if (y + ch > area.bottom() && ch < area.height()) {
overlap = h_wrong; // this throws the algorithm to an exit
} else if (x + cw > area.right()) {
overlap = w_wrong;
} else {
overlap = none; //initialize
cxl = x; cxr = x + cw;
cyt = y; cyb = y + ch;
for (auto l = workspace()->stackingOrder().constBegin(); l != workspace()->stackingOrder().constEnd() ; ++l) {
AbstractClient *client = qobject_cast<AbstractClient*>(*l);
if (isIrrelevant(client, c, desktop)) {
continue;
}
xl = client->x(); yt = client->y();
xr = xl + client->width(); yb = yt + client->height();
//if windows overlap, calc the overall overlapping
if ((cxl < xr) && (cxr > xl) &&
(cyt < yb) && (cyb > yt)) {
xl = qMax(cxl, xl); xr = qMin(cxr, xr);
yt = qMax(cyt, yt); yb = qMin(cyb, yb);
if (client->keepAbove())
overlap += 16 * (xr - xl) * (yb - yt);
else if (client->keepBelow() && !client->isDock()) // ignore KeepBelow windows
overlap += 0; // for placement (see X11Client::belongsToLayer() for Dock)
else
overlap += (xr - xl) * (yb - yt);
}
}
}
//CT first time we get no overlap we stop.
if (overlap == none) {
x_optimal = x;
y_optimal = y;
break;
}
if (first_pass) {
first_pass = false;
min_overlap = overlap;
}
//CT save the best position and the minimum overlap up to now
else if (overlap >= none && overlap < min_overlap) {
min_overlap = overlap;
x_optimal = x;
y_optimal = y;
}
// really need to loop? test if there's any overlap
if (overlap > none) {
possible = area.right();
if (possible - cw > x) possible -= cw;
// compare to the position of each client on the same desk
for (auto l = workspace()->stackingOrder().constBegin(); l != workspace()->stackingOrder().constEnd() ; ++l) {
AbstractClient *client = qobject_cast<AbstractClient*>(*l);
if (isIrrelevant(client, c, desktop)) {
continue;
}
xl = client->x(); yt = client->y();
xr = xl + client->width(); yb = yt + client->height();
// if not enough room above or under the current tested client
// determine the first non-overlapped x position
if ((y < yb) && (yt < ch + y)) {
if ((xr > x) && (possible > xr)) possible = xr;
basket = xl - cw;
if ((basket > x) && (possible > basket)) possible = basket;
}
}
x = possible;
}
// ... else ==> not enough x dimension (overlap was wrong on horizontal)
else if (overlap == w_wrong) {
x = area.left();
possible = area.bottom();
if (possible - ch > y) possible -= ch;
//test the position of each window on the desk
for (auto l = workspace()->stackingOrder().constBegin(); l != workspace()->stackingOrder().constEnd() ; ++l) {
AbstractClient *client = qobject_cast<AbstractClient*>(*l);
if (isIrrelevant(client, c, desktop)) {
continue;
}
xl = client->x(); yt = client->y();
xr = xl + client->width(); yb = yt + client->height();
// if not enough room to the left or right of the current tested client
// determine the first non-overlapped y position
if ((yb > y) && (possible > yb)) possible = yb;
basket = yt - ch;
if ((basket > y) && (possible > basket)) possible = basket;
}
y = possible;
}
} while ((overlap != none) && (overlap != h_wrong) && (y < area.bottom()));
if (ch >= area.height()) {
y_optimal = area.top();
}
// place the window
c->move(QPoint(x_optimal, y_optimal));
}
void Placement::reinitCascading(int desktop)
{
// desktop == 0 - reinit all
if (desktop == 0) {
cci.clear();
for (uint i = 0; i < VirtualDesktopManager::self()->count(); ++i) {
DesktopCascadingInfo inf;
inf.pos = QPoint(-1, -1);
inf.col = 0;
inf.row = 0;
cci.append(inf);
}
} else {
cci[desktop - 1].pos = QPoint(-1, -1);
cci[desktop - 1].col = cci[desktop - 1].row = 0;
}
}
QPoint Workspace::cascadeOffset(const AbstractClient *c) const
{
QRect area = clientArea(PlacementArea, c, c->frameGeometry().center());
return QPoint(area.width()/48, area.height()/48);
}
/**
* Place windows in a cascading order, remembering positions for each desktop
*/
void Placement::placeCascaded(AbstractClient *c, const QRect &area, Policy nextPlacement)
{
Q_ASSERT(area.isValid());
if (!c->frameGeometry().isValid()) {
return;
}
/* cascadePlacement by Cristian Tibirna (tibirna@kde.org) (30Jan98)
*/
// work coords
int xp, yp;
//CT how do I get from the 'Client' class the size that NW squarish "handle"
const QPoint delta = workspace()->cascadeOffset(c);
const int dn = c->desktop() == 0 || c->isOnAllDesktops() ? (VirtualDesktopManager::self()->current() - 1) : (c->desktop() - 1);
// initialize often used vars: width and height of c; we gain speed
const int ch = c->height();
const int cw = c->width();
const int X = area.left();
const int Y = area.top();
const int H = area.height();
const int W = area.width();
if (nextPlacement == Unknown)
nextPlacement = Smart;
//initialize if needed
if (cci[dn].pos.x() < 0 || cci[dn].pos.x() < X || cci[dn].pos.y() < Y) {
cci[dn].pos = QPoint(X, Y);
cci[dn].col = cci[dn].row = 0;
}
xp = cci[dn].pos.x();
yp = cci[dn].pos.y();
//here to touch in case people vote for resize on placement
if ((yp + ch) > H) yp = Y;
if ((xp + cw) > W) {
if (!yp) {
place(c, area, nextPlacement);
return;
} else xp = X;
}
//if this isn't the first window
if (cci[dn].pos.x() != X && cci[dn].pos.y() != Y) {
/* The following statements cause an internal compiler error with
* egcs-2.91.66 on SuSE Linux 6.3. The equivalent forms compile fine.
* 22-Dec-1999 CS
*
* if (xp != X && yp == Y) xp = delta.x() * (++(cci[dn].col));
* if (yp != Y && xp == X) yp = delta.y() * (++(cci[dn].row));
*/
if (xp != X && yp == Y) {
++(cci[dn].col);
xp = delta.x() * cci[dn].col;
}
if (yp != Y && xp == X) {
++(cci[dn].row);
yp = delta.y() * cci[dn].row;
}
// last resort: if still doesn't fit, smart place it
if (((xp + cw) > W - X) || ((yp + ch) > H - Y)) {
place(c, area, nextPlacement);
return;
}
}
// place the window
c->move(QPoint(xp, yp));
// new position
cci[dn].pos = QPoint(xp + delta.x(), yp + delta.y());
}
/**
* Place windows centered, on top of all others
*/
void Placement::placeCentered(AbstractClient* c, const QRect& area, Policy /*next*/)
{
Q_ASSERT(area.isValid());
if (!c->frameGeometry().isValid()) {
return;
}
const int xp = area.left() + (area.width() - c->width()) / 2;
const int yp = area.top() + (area.height() - c->height()) / 2;
// place the window
c->move(QPoint(xp, yp));
}
/**
* Place windows in the (0,0) corner, on top of all others
*/
void Placement::placeZeroCornered(AbstractClient* c, const QRect& area, Policy /*next*/)
{
Q_ASSERT(area.isValid());
// get the maximum allowed windows space and desk's origin
c->move(area.topLeft());
}
void Placement::placeUtility(AbstractClient *c, const QRect &area, Policy /*next*/)
{
// TODO kwin should try to place utility windows next to their mainwindow,
// preferably at the right edge, and going down if there are more of them
// if there's not enough place outside the mainwindow, it should prefer
// top-right corner
// use the default placement for now
place(c, area, Default);
}
void Placement::placeOnScreenDisplay(AbstractClient *c, const QRect &area)
{
Q_ASSERT(area.isValid());
// place at lower area of the screen
const int x = area.left() + (area.width() - c->width()) / 2;
const int y = area.top() + 2 * area.height() / 3 - c->height() / 2;
c->move(QPoint(x, y));
}
void Placement::placeTransient(AbstractClient *c)
{
const auto parent = c->transientFor();
const QRect screen = Workspace::self()->clientArea(parent->isFullScreen() ? FullScreenArea : PlacementArea, parent);
c->moveResize(c->transientPlacement(screen));
// Potentially a client could set no constraint adjustments
// and we'll be offscreen.
// The spec implies we should place window the offscreen. However,
// practically Qt doesn't set any constraint adjustments yet so we can't.
// Also kwin generally doesn't let clients do what they want
if (!screen.contains(c->moveResizeGeometry())) {
c->keepInArea(screen);
}
}
void Placement::placeDialog(AbstractClient *c, const QRect &area, Policy nextPlacement)
{
placeOnMainWindow(c, area, nextPlacement);
}
void Placement::placeUnderMouse(AbstractClient *c, const QRect &area, Policy /*next*/)
{
Q_ASSERT(area.isValid());
QRect geom = c->frameGeometry();
geom.moveCenter(Cursors::self()->mouse()->pos());
c->move(geom.topLeft());
c->keepInArea(area); // make sure it's kept inside workarea
}
void Placement::placeOnMainWindow(AbstractClient *c, const QRect &area, Policy nextPlacement)
{
Q_ASSERT(area.isValid());
if (nextPlacement == Unknown)
nextPlacement = Centered;
if (nextPlacement == Maximizing) // maximize if needed
placeMaximizing(c, area, NoPlacement);
auto mainwindows = c->mainClients();
AbstractClient* place_on = nullptr;
AbstractClient* place_on2 = nullptr;
int mains_count = 0;
for (auto it = mainwindows.constBegin();
it != mainwindows.constEnd();
++it) {
if (mainwindows.count() > 1 && (*it)->isSpecialWindow())
continue; // don't consider toolbars etc when placing
++mains_count;
place_on2 = *it;
if ((*it)->isOnCurrentDesktop()) {
if (place_on == nullptr)
place_on = *it;
else {
// two or more on current desktop -> center
// That's the default at least. However, with maximizing placement
// policy as the default, the dialog should be either maximized or
// made as large as its maximum size and then placed centered.
// So the nextPlacement argument allows chaining. In this case, nextPlacement
// is Maximizing and it will call placeCentered().
place(c, area, Centered);
return;
}
}
}
if (place_on == nullptr) {
// 'mains_count' is used because it doesn't include ignored mainwindows
if (mains_count != 1) {
place(c, area, Centered);
return;
}
place_on = place_on2; // use the only window filtered together with 'mains_count'
}
if (place_on->isDesktop()) {
place(c, area, Centered);
return;
}
QRect geom = c->frameGeometry();
geom.moveCenter(place_on->frameGeometry().center());
c->move(geom.topLeft());
// get area again, because the mainwindow may be on different xinerama screen
const QRect placementArea = workspace()->clientArea(PlacementArea, c);
c->keepInArea(placementArea); // make sure it's kept inside workarea
}
void Placement::placeMaximizing(AbstractClient *c, const QRect &area, Policy nextPlacement)
{
Q_ASSERT(area.isValid());
if (nextPlacement == Unknown)
nextPlacement = Smart;
if (c->isMaximizable() && c->maxSize().width() >= area.width() && c->maxSize().height() >= area.height()) {
if (workspace()->clientArea(MaximizeArea, c) == area)
c->maximize(MaximizeFull);
else { // if the geometry doesn't match default maximize area (xinerama case?),
// it's probably better to use the given area
c->moveResize(area);
}
} else {
c->resizeWithChecks(c->maxSize().boundedTo(area.size()));
place(c, area, nextPlacement);
}
}
void Placement::cascadeDesktop()
{
Workspace *ws = Workspace::self();
const int desktop = VirtualDesktopManager::self()->current();
reinitCascading(desktop);
const auto stackingOrder = ws->stackingOrder();
for (Toplevel *toplevel : stackingOrder) {
auto client = qobject_cast<AbstractClient*>(toplevel);
if (!client ||
(!client->isOnCurrentDesktop()) ||
(client->isMinimized()) ||
(client->isOnAllDesktops()) ||
(!client->isMovable()))
continue;
const QRect placementArea = workspace()->clientArea(PlacementArea, client);
placeCascaded(client, placementArea);
}
}
void Placement::unclutterDesktop()
{
const auto &clients = Workspace::self()->allClientList();
for (int i = clients.size() - 1; i >= 0; i--) {
auto client = clients.at(i);
if ((!client->isOnCurrentDesktop()) ||
(client->isMinimized()) ||
(client->isOnAllDesktops()) ||
(!client->isMovable()))
continue;
const QRect placementArea = workspace()->clientArea(PlacementArea, client);
placeSmart(client, placementArea);
}
}
#endif
const char* Placement::policyToString(Policy policy)
{
const char* const policies[] = {
"NoPlacement", "Default", "XXX should never see", "Random", "Smart", "Cascade", "Centered",
"ZeroCornered", "UnderMouse", "OnMainWindow", "Maximizing"
};
Q_ASSERT(policy < int(sizeof(policies) / sizeof(policies[ 0 ])));
return policies[ policy ];
}
#ifndef KCMRULES
// ********************
// Workspace
// ********************
void AbstractClient::packTo(int left, int top)
{
workspace()->updateFocusMousePosition(Cursors::self()->mouse()->pos()); // may cause leave event;
const AbstractOutput *oldOutput = output();
move(QPoint(left, top));
if (output() != oldOutput) {
workspace()->sendClientToOutput(this, output()); // checks rule validity
if (maximizeMode() != MaximizeRestore)
checkWorkspacePosition();
}
}
/**
* Moves active window left until in bumps into another window or workarea edge.
*/
void Workspace::slotWindowMoveLeft()
{
if (active_client && active_client->isMovable()) {
const QRect geometry = active_client->moveResizeGeometry();
active_client->packTo(packPositionLeft(active_client, geometry.left(), true),
geometry.y());
}
}
void Workspace::slotWindowMoveRight()
{
if (active_client && active_client->isMovable()) {
const QRect geometry = active_client->moveResizeGeometry();
active_client->packTo(packPositionRight(active_client, geometry.right(), true) - geometry.width() + 1,
geometry.y());
}
}
void Workspace::slotWindowMoveUp()
{
if (active_client && active_client->isMovable()) {
const QRect geometry = active_client->moveResizeGeometry();
active_client->packTo(geometry.x(),
packPositionUp(active_client, geometry.top(), true));
}
}
void Workspace::slotWindowMoveDown()
{
if (active_client && active_client->isMovable()) {
const QRect geometry = active_client->moveResizeGeometry();
active_client->packTo(geometry.x(),
packPositionDown(active_client, geometry.bottom(), true) - geometry.height() + 1);
}
}
/** Moves the active window to the center of the screen. */
void Workspace::slotWindowCenter()
{
if (active_client && active_client->isMovable()) {
const QRect geometry = active_client->moveResizeGeometry();
QPoint center = clientArea(MaximizeArea, active_client).center();
active_client->packTo(center.x() - (geometry.width() / 2),
center.y() - (geometry.height() / 2));
}
}
void Workspace::slotWindowExpandHorizontal()
{
if (active_client)
active_client->growHorizontal();
}
void AbstractClient::growHorizontal()
{
if (!isResizable() || isShade())
return;
QRect geom = moveResizeGeometry();
geom.setRight(workspace()->packPositionRight(this, geom.right(), true));
QSize adjsize = constrainFrameSize(geom.size(), SizeModeFixedW);
if (moveResizeGeometry().size() == adjsize && geom.size() != adjsize && resizeIncrements().width() > 1) { // take care of size increments
int newright = workspace()->packPositionRight(this, geom.right() + resizeIncrements().width() - 1, true);
// check that it hasn't grown outside of the area, due to size increments
// TODO this may be wrong?
if (workspace()->clientArea(MovementArea,
this,
QPoint((x() + newright) / 2, moveResizeGeometry().center().y())).right() >= newright)
geom.setRight(newright);
}
geom.setSize(constrainFrameSize(geom.size(), SizeModeFixedW));
geom.setSize(constrainFrameSize(geom.size(), SizeModeFixedH));
workspace()->updateFocusMousePosition(Cursors::self()->mouse()->pos()); // may cause leave event;
moveResize(geom);
}
void Workspace::slotWindowShrinkHorizontal()
{
if (active_client)
active_client->shrinkHorizontal();
}
void AbstractClient::shrinkHorizontal()
{
if (!isResizable() || isShade())
return;
QRect geom = moveResizeGeometry();
geom.setRight(workspace()->packPositionLeft(this, geom.right(), false));
if (geom.width() <= 1)
return;
geom.setSize(constrainFrameSize(geom.size(), SizeModeFixedW));
if (geom.width() > 20) {
workspace()->updateFocusMousePosition(Cursors::self()->mouse()->pos()); // may cause leave event;
moveResize(geom);
}
}
void Workspace::slotWindowExpandVertical()
{
if (active_client)
active_client->growVertical();
}
void AbstractClient::growVertical()
{
if (!isResizable() || isShade())
return;
QRect geom = moveResizeGeometry();
geom.setBottom(workspace()->packPositionDown(this, geom.bottom(), true));
QSize adjsize = constrainFrameSize(geom.size(), SizeModeFixedH);
if (moveResizeGeometry().size() == adjsize && geom.size() != adjsize && resizeIncrements().height() > 1) { // take care of size increments
int newbottom = workspace()->packPositionDown(this, geom.bottom() + resizeIncrements().height() - 1, true);
// check that it hasn't grown outside of the area, due to size increments
if (workspace()->clientArea(MovementArea,
this,
QPoint(moveResizeGeometry().center().x(), (y() + newbottom) / 2)).bottom() >= newbottom)
geom.setBottom(newbottom);
}
geom.setSize(constrainFrameSize(geom.size(), SizeModeFixedH));
workspace()->updateFocusMousePosition(Cursors::self()->mouse()->pos()); // may cause leave event;
moveResize(geom);
}
void Workspace::slotWindowShrinkVertical()
{
if (active_client)
active_client->shrinkVertical();
}
void AbstractClient::shrinkVertical()
{
if (!isResizable() || isShade())
return;
QRect geom = moveResizeGeometry();
geom.setBottom(workspace()->packPositionUp(this, geom.bottom(), false));
if (geom.height() <= 1)
return;
geom.setSize(constrainFrameSize(geom.size(), SizeModeFixedH));
if (geom.height() > 20) {
workspace()->updateFocusMousePosition(Cursors::self()->mouse()->pos()); // may cause leave event;
moveResize(geom);
}
}
void Workspace::quickTileWindow(QuickTileMode mode)
{
if (!active_client) {
return;
}
// If the user invokes two of these commands in a one second period, try to
// combine them together to enable easy and intuitive corner tiling
#define FLAG(name) QuickTileMode(QuickTileFlag::name)
if (!m_quickTileCombineTimer->isActive()) {
m_quickTileCombineTimer->start(1000);
m_lastTilingMode = mode;
} else {
if (
( (m_lastTilingMode == FLAG(Left) || m_lastTilingMode == FLAG(Right)) && (mode == FLAG(Top) || mode == FLAG(Bottom)) )
||
( (m_lastTilingMode == FLAG(Top) || m_lastTilingMode == FLAG(Bottom)) && (mode == FLAG(Left) || mode == FLAG(Right)) )
#undef FLAG
) {
mode |= m_lastTilingMode;
}
m_quickTileCombineTimer->stop();
}
active_client->setQuickTileMode(mode, true);
}
int Workspace::packPositionLeft(const AbstractClient *client, int oldX, bool leftEdge) const
{
int newX = clientArea(MaximizeArea, client).left();
if (oldX <= newX) { // try another Xinerama screen
newX = clientArea(MaximizeArea,
client,
QPoint(client->frameGeometry().left() - 1, client->frameGeometry().center().y())).left();
}
if (oldX <= newX) {
return oldX;
}
const int desktop = client->desktop() == 0 || client->isOnAllDesktops() ? VirtualDesktopManager::self()->current() : client->desktop();
for (auto it = m_allClients.constBegin(), end = m_allClients.constEnd(); it != end; ++it) {
if (isIrrelevant(*it, client, desktop)) {
continue;
}
const int x = leftEdge ? (*it)->frameGeometry().right() + 1 : (*it)->frameGeometry().left() - 1;
if (x > newX && x < oldX
&& !(client->frameGeometry().top() > (*it)->frameGeometry().bottom() // they overlap in Y direction
|| client->frameGeometry().bottom() < (*it)->frameGeometry().top())) {
newX = x;
}
}
return newX;
}
int Workspace::packPositionRight(const AbstractClient *client, int oldX, bool rightEdge) const
{
int newX = clientArea(MaximizeArea, client).right();
if (oldX >= newX) { // try another Xinerama screen
newX = clientArea(MaximizeArea,
client,
QPoint(client->frameGeometry().right() + 1, client->frameGeometry().center().y())).right();
}
if (oldX >= newX) {
return oldX;
}
const int desktop = client->desktop() == 0 || client->isOnAllDesktops() ? VirtualDesktopManager::self()->current() : client->desktop();
for (auto it = m_allClients.constBegin(), end = m_allClients.constEnd(); it != end; ++it) {
if (isIrrelevant(*it, client, desktop)) {
continue;
}
const int x = rightEdge ? (*it)->frameGeometry().left() - 1 : (*it)->frameGeometry().right() + 1;
if (x < newX && x > oldX
&& !(client->frameGeometry().top() > (*it)->frameGeometry().bottom()
|| client->frameGeometry().bottom() < (*it)->frameGeometry().top())) {
newX = x;
}
}
return newX;
}
int Workspace::packPositionUp(const AbstractClient *client, int oldY, bool topEdge) const
{
int newY = clientArea(MaximizeArea, client).top();
if (oldY <= newY) { // try another Xinerama screen
newY = clientArea(MaximizeArea,
client,
QPoint(client->frameGeometry().center().x(), client->frameGeometry().top() - 1)).top();
}
if (oldY <= newY) {
return oldY;
}
const int desktop = client->desktop() == 0 || client->isOnAllDesktops() ? VirtualDesktopManager::self()->current() : client->desktop();
for (auto it = m_allClients.constBegin(), end = m_allClients.constEnd(); it != end; ++it) {
if (isIrrelevant(*it, client, desktop)) {
continue;
}
const int y = topEdge ? (*it)->frameGeometry().bottom() + 1 : (*it)->frameGeometry().top() - 1;
if (y > newY && y < oldY
&& !(client->frameGeometry().left() > (*it)->frameGeometry().right() // they overlap in X direction
|| client->frameGeometry().right() < (*it)->frameGeometry().left())) {
newY = y;
}
}
return newY;
}
int Workspace::packPositionDown(const AbstractClient *client, int oldY, bool bottomEdge) const
{
int newY = clientArea(MaximizeArea, client).bottom();
if (oldY >= newY) { // try another Xinerama screen
newY = clientArea(MaximizeArea,
client,
QPoint(client->frameGeometry().center().x(), client->frameGeometry().bottom() + 1)).bottom();
}
if (oldY >= newY) {
return oldY;
}
const int desktop = client->desktop() == 0 || client->isOnAllDesktops() ? VirtualDesktopManager::self()->current() : client->desktop();
for (auto it = m_allClients.constBegin(), end = m_allClients.constEnd(); it != end; ++it) {
if (isIrrelevant(*it, client, desktop)) {
continue;
}
const int y = bottomEdge ? (*it)->frameGeometry().top() - 1 : (*it)->frameGeometry().bottom() + 1;
if (y < newY && y > oldY
&& !(client->frameGeometry().left() > (*it)->frameGeometry().right()
|| client->frameGeometry().right() < (*it)->frameGeometry().left())) {
newY = y;
}
}
return newY;
}
#endif
} // namespace
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