kwin/effects/cubeslide/cubeslide.cpp
Vlad Zahorodnii 62a7db7028 Use nullptr everywhere
Summary:
Because KWin is a very old project, we use three kinds of null pointer
literals: 0, NULL, and nullptr. Since C++11, it's recommended to use
nullptr keyword.

This change converts all usages of 0 and NULL literal to nullptr. Even
though it breaks git history, we need to do it in order to have consistent
code as well to ease code reviews (it's very tempting for some people to
add unrelated changes to their patches, e.g. converting NULL to nullptr).

Test Plan: Compiles.

Reviewers: #kwin, davidedmundson, romangg

Reviewed By: #kwin, davidedmundson, romangg

Subscribers: romangg, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D23618
2019-09-19 17:48:21 +03:00

671 lines
25 KiB
C++

/********************************************************************
KWin - the KDE window manager
This file is part of the KDE project.
Copyright (C) 2009 Martin Gräßlin <mgraesslin@kde.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*********************************************************************/
#include "cubeslide.h"
// KConfigSkeleton
#include "cubeslideconfig.h"
#include <kwinconfig.h>
#include <kwinglutils.h>
#include <QVector3D>
#include <cmath>
namespace KWin
{
CubeSlideEffect::CubeSlideEffect()
: stickyPainting(false)
, windowMoving(false)
, desktopChangedWhileMoving(false)
, progressRestriction(0.0f)
{
initConfig<CubeSlideConfig>();
connect(effects, &EffectsHandler::windowAdded,
this, &CubeSlideEffect::slotWindowAdded);
connect(effects, &EffectsHandler::windowDeleted,
this, &CubeSlideEffect::slotWindowDeleted);
connect(effects, QOverload<int,int,EffectWindow *>::of(&EffectsHandler::desktopChanged),
this, &CubeSlideEffect::slotDesktopChanged);
connect(effects, &EffectsHandler::windowStepUserMovedResized,
this, &CubeSlideEffect::slotWindowStepUserMovedResized);
connect(effects, &EffectsHandler::windowFinishUserMovedResized,
this, &CubeSlideEffect::slotWindowFinishUserMovedResized);
connect(effects, &EffectsHandler::numberDesktopsChanged,
this, &CubeSlideEffect::slotNumberDesktopsChanged);
reconfigure(ReconfigureAll);
}
CubeSlideEffect::~CubeSlideEffect()
{
}
bool CubeSlideEffect::supported()
{
return effects->isOpenGLCompositing() && effects->animationsSupported();
}
void CubeSlideEffect::reconfigure(ReconfigureFlags)
{
CubeSlideConfig::self()->read();
// TODO: rename rotationDuration to duration
rotationDuration = animationTime(CubeSlideConfig::rotationDuration() != 0 ? CubeSlideConfig::rotationDuration() : 500);
timeLine.setCurveShape(QTimeLine::EaseInOutCurve);
timeLine.setDuration(rotationDuration);
dontSlidePanels = CubeSlideConfig::dontSlidePanels();
dontSlideStickyWindows = CubeSlideConfig::dontSlideStickyWindows();
usePagerLayout = CubeSlideConfig::usePagerLayout();
useWindowMoving = CubeSlideConfig::useWindowMoving();
}
void CubeSlideEffect::prePaintScreen(ScreenPrePaintData& data, int time)
{
if (isActive()) {
data.mask |= PAINT_SCREEN_TRANSFORMED | PAINT_SCREEN_WITH_TRANSFORMED_WINDOWS | PAINT_SCREEN_BACKGROUND_FIRST;
timeLine.setCurrentTime(timeLine.currentTime() + time);
if (windowMoving && timeLine.currentTime() > progressRestriction * (qreal)timeLine.duration())
timeLine.setCurrentTime(progressRestriction * (qreal)timeLine.duration());
}
effects->prePaintScreen(data, time);
}
void CubeSlideEffect::paintScreen(int mask, QRegion region, ScreenPaintData& data)
{
if (isActive()) {
glEnable(GL_CULL_FACE);
glCullFace(GL_FRONT);
paintSlideCube(mask, region, data);
glCullFace(GL_BACK);
paintSlideCube(mask, region, data);
glDisable(GL_CULL_FACE);
// Paint an extra screen with 'sticky' windows.
if (!staticWindows.isEmpty()) {
stickyPainting = true;
effects->paintScreen(mask, region, data);
stickyPainting = false;
}
} else
effects->paintScreen(mask, region, data);
}
void CubeSlideEffect::paintSlideCube(int mask, QRegion region, ScreenPaintData& data)
{
// slide cube only paints to desktops at a time
// first the horizontal rotations followed by vertical rotations
QRect rect = effects->clientArea(FullArea, effects->activeScreen(), effects->currentDesktop());
float point = rect.width() / 2 * tan(45.0f * M_PI / 180.0f);
cube_painting = true;
painting_desktop = front_desktop;
ScreenPaintData firstFaceData = data;
ScreenPaintData secondFaceData = data;
RotationDirection direction = slideRotations.head();
int secondDesktop;
switch(direction) {
case Left:
firstFaceData.setRotationAxis(Qt::YAxis);
secondFaceData.setRotationAxis(Qt::YAxis);
if (usePagerLayout)
secondDesktop = effects->desktopToLeft(front_desktop, true);
else {
secondDesktop = front_desktop - 1;
if (secondDesktop == 0)
secondDesktop = effects->numberOfDesktops();
}
firstFaceData.setRotationAngle(90.0f * timeLine.currentValue());
secondFaceData.setRotationAngle(-90.0f * (1.0f - timeLine.currentValue()));
break;
case Right:
firstFaceData.setRotationAxis(Qt::YAxis);
secondFaceData.setRotationAxis(Qt::YAxis);
if (usePagerLayout)
secondDesktop = effects->desktopToRight(front_desktop, true);
else {
secondDesktop = front_desktop + 1;
if (secondDesktop > effects->numberOfDesktops())
secondDesktop = 1;
}
firstFaceData.setRotationAngle(-90.0f * timeLine.currentValue());
secondFaceData.setRotationAngle(90.0f * (1.0f - timeLine.currentValue()));
break;
case Upwards:
firstFaceData.setRotationAxis(Qt::XAxis);
secondFaceData.setRotationAxis(Qt::XAxis);
secondDesktop = effects->desktopAbove(front_desktop, true);
firstFaceData.setRotationAngle(-90.0f * timeLine.currentValue());
secondFaceData.setRotationAngle(90.0f * (1.0f - timeLine.currentValue()));
point = rect.height() / 2 * tan(45.0f * M_PI / 180.0f);
break;
case Downwards:
firstFaceData.setRotationAxis(Qt::XAxis);
secondFaceData.setRotationAxis(Qt::XAxis);
secondDesktop = effects->desktopBelow(front_desktop, true);
firstFaceData.setRotationAngle(90.0f * timeLine.currentValue());
secondFaceData.setRotationAngle(-90.0f * (1.0f - timeLine.currentValue()));
point = rect.height() / 2 * tan(45.0f * M_PI / 180.0f);
break;
default:
// totally impossible
return;
}
// front desktop
firstFaceData.setRotationOrigin(QVector3D(rect.width() / 2, rect.height() / 2, -point));
other_desktop = secondDesktop;
firstDesktop = true;
effects->paintScreen(mask, region, firstFaceData);
// second desktop
other_desktop = painting_desktop;
painting_desktop = secondDesktop;
firstDesktop = false;
secondFaceData.setRotationOrigin(QVector3D(rect.width() / 2, rect.height() / 2, -point));
effects->paintScreen(mask, region, secondFaceData);
cube_painting = false;
painting_desktop = effects->currentDesktop();
}
void CubeSlideEffect::prePaintWindow(EffectWindow* w, WindowPrePaintData& data, int time)
{
if (stickyPainting) {
if (staticWindows.contains(w)) {
w->enablePainting(EffectWindow::PAINT_DISABLED_BY_DESKTOP);
} else {
w->disablePainting(EffectWindow::PAINT_DISABLED_BY_DESKTOP);
}
} else if (isActive() && cube_painting) {
if (staticWindows.contains(w)) {
w->disablePainting(EffectWindow::PAINT_DISABLED_BY_DESKTOP);
effects->prePaintWindow(w, data, time);
return;
}
QRect rect = effects->clientArea(FullArea, effects->activeScreen(), painting_desktop);
if (w->isOnDesktop(painting_desktop)) {
if (w->x() < rect.x()) {
data.quads = data.quads.splitAtX(-w->x());
}
if (w->x() + w->width() > rect.x() + rect.width()) {
data.quads = data.quads.splitAtX(rect.width() - w->x());
}
if (w->y() < rect.y()) {
data.quads = data.quads.splitAtY(-w->y());
}
if (w->y() + w->height() > rect.y() + rect.height()) {
data.quads = data.quads.splitAtY(rect.height() - w->y());
}
w->enablePainting(EffectWindow::PAINT_DISABLED_BY_DESKTOP);
} else if (w->isOnDesktop(other_desktop)) {
RotationDirection direction = slideRotations.head();
bool enable = false;
if (w->x() < rect.x() &&
(direction == Left || direction == Right)) {
data.quads = data.quads.splitAtX(-w->x());
enable = true;
}
if (w->x() + w->width() > rect.x() + rect.width() &&
(direction == Left || direction == Right)) {
data.quads = data.quads.splitAtX(rect.width() - w->x());
enable = true;
}
if (w->y() < rect.y() &&
(direction == Upwards || direction == Downwards)) {
data.quads = data.quads.splitAtY(-w->y());
enable = true;
}
if (w->y() + w->height() > rect.y() + rect.height() &&
(direction == Upwards || direction == Downwards)) {
data.quads = data.quads.splitAtY(rect.height() - w->y());
enable = true;
}
if (enable) {
data.setTransformed();
data.setTranslucent();
w->enablePainting(EffectWindow::PAINT_DISABLED_BY_DESKTOP);
} else
w->disablePainting(EffectWindow::PAINT_DISABLED_BY_DESKTOP);
} else
w->disablePainting(EffectWindow::PAINT_DISABLED_BY_DESKTOP);
}
effects->prePaintWindow(w, data, time);
}
void CubeSlideEffect::paintWindow(EffectWindow* w, int mask, QRegion region, WindowPaintData& data)
{
if (isActive() && cube_painting && !staticWindows.contains(w)) {
// filter out quads overlapping the edges
QRect rect = effects->clientArea(FullArea, effects->activeScreen(), painting_desktop);
if (w->isOnDesktop(painting_desktop)) {
if (w->x() < rect.x()) {
WindowQuadList new_quads;
foreach (const WindowQuad & quad, data.quads) {
if (quad.right() > -w->x()) {
new_quads.append(quad);
}
}
data.quads = new_quads;
}
if (w->x() + w->width() > rect.x() + rect.width()) {
WindowQuadList new_quads;
foreach (const WindowQuad & quad, data.quads) {
if (quad.right() <= rect.width() - w->x()) {
new_quads.append(quad);
}
}
data.quads = new_quads;
}
if (w->y() < rect.y()) {
WindowQuadList new_quads;
foreach (const WindowQuad & quad, data.quads) {
if (quad.bottom() > -w->y()) {
new_quads.append(quad);
}
}
data.quads = new_quads;
}
if (w->y() + w->height() > rect.y() + rect.height()) {
WindowQuadList new_quads;
foreach (const WindowQuad & quad, data.quads) {
if (quad.bottom() <= rect.height() - w->y()) {
new_quads.append(quad);
}
}
data.quads = new_quads;
}
}
// paint windows overlapping edges from other desktop
if (w->isOnDesktop(other_desktop) && (mask & PAINT_WINDOW_TRANSFORMED)) {
RotationDirection direction = slideRotations.head();
if (w->x() < rect.x() &&
(direction == Left || direction == Right)) {
WindowQuadList new_quads;
data.setXTranslation(rect.width());
foreach (const WindowQuad & quad, data.quads) {
if (quad.right() <= -w->x()) {
new_quads.append(quad);
}
}
data.quads = new_quads;
}
if (w->x() + w->width() > rect.x() + rect.width() &&
(direction == Left || direction == Right)) {
WindowQuadList new_quads;
data.setXTranslation(-rect.width());
foreach (const WindowQuad & quad, data.quads) {
if (quad.right() > rect.width() - w->x()) {
new_quads.append(quad);
}
}
data.quads = new_quads;
}
if (w->y() < rect.y() &&
(direction == Upwards || direction == Downwards)) {
WindowQuadList new_quads;
data.setYTranslation(rect.height());
foreach (const WindowQuad & quad, data.quads) {
if (quad.bottom() <= -w->y()) {
new_quads.append(quad);
}
}
data.quads = new_quads;
}
if (w->y() + w->height() > rect.y() + rect.height() &&
(direction == Upwards || direction == Downwards)) {
WindowQuadList new_quads;
data.setYTranslation(-rect.height());
foreach (const WindowQuad & quad, data.quads) {
if (quad.bottom() > rect.height() - w->y()) {
new_quads.append(quad);
}
}
data.quads = new_quads;
}
if (firstDesktop)
data.multiplyOpacity(timeLine.currentValue());
else
data.multiplyOpacity((1.0 - timeLine.currentValue()));
}
}
effects->paintWindow(w, mask, region, data);
}
void CubeSlideEffect::postPaintScreen()
{
effects->postPaintScreen();
if (isActive()) {
if (timeLine.currentValue() == 1.0) {
RotationDirection direction = slideRotations.dequeue();
switch(direction) {
case Left:
if (usePagerLayout)
front_desktop = effects->desktopToLeft(front_desktop, true);
else {
front_desktop--;
if (front_desktop == 0)
front_desktop = effects->numberOfDesktops();
}
break;
case Right:
if (usePagerLayout)
front_desktop = effects->desktopToRight(front_desktop, true);
else {
front_desktop++;
if (front_desktop > effects->numberOfDesktops())
front_desktop = 1;
}
break;
case Upwards:
front_desktop = effects->desktopAbove(front_desktop, true);
break;
case Downwards:
front_desktop = effects->desktopBelow(front_desktop, true);
break;
}
timeLine.setCurrentTime(0);
if (slideRotations.count() == 1)
timeLine.setCurveShape(QTimeLine::EaseOutCurve);
else
timeLine.setCurveShape(QTimeLine::LinearCurve);
if (slideRotations.empty()) {
for (EffectWindow* w : staticWindows) {
w->setData(WindowForceBlurRole, QVariant());
w->setData(WindowForceBackgroundContrastRole, QVariant());
}
staticWindows.clear();
effects->setActiveFullScreenEffect(nullptr);
}
}
effects->addRepaintFull();
}
}
void CubeSlideEffect::slotDesktopChanged(int old, int current, EffectWindow* w)
{
Q_UNUSED(w)
if (effects->activeFullScreenEffect() && effects->activeFullScreenEffect() != this)
return;
if (old > effects->numberOfDesktops()) {
// number of desktops has been reduced -> no animation
return;
}
if (windowMoving) {
desktopChangedWhileMoving = true;
progressRestriction = 1.0 - progressRestriction;
effects->addRepaintFull();
return;
}
bool activate = true;
if (!slideRotations.empty()) {
// last slide still in progress
activate = false;
RotationDirection direction = slideRotations.dequeue();
slideRotations.clear();
slideRotations.enqueue(direction);
switch(direction) {
case Left:
if (usePagerLayout)
old = effects->desktopToLeft(front_desktop, true);
else {
old = front_desktop - 1;
if (old == 0)
old = effects->numberOfDesktops();
}
break;
case Right:
if (usePagerLayout)
old = effects->desktopToRight(front_desktop, true);
else {
old = front_desktop + 1;
if (old > effects->numberOfDesktops())
old = 1;
}
break;
case Upwards:
old = effects->desktopAbove(front_desktop, true);
break;
case Downwards:
old = effects->desktopBelow(front_desktop, true);
break;
}
}
if (usePagerLayout) {
// calculate distance in respect to pager
QPoint diff = effects->desktopGridCoords(effects->currentDesktop()) - effects->desktopGridCoords(old);
if (qAbs(diff.x()) > effects->desktopGridWidth() / 2) {
int sign = -1 * (diff.x() / qAbs(diff.x()));
diff.setX(sign *(effects->desktopGridWidth() - qAbs(diff.x())));
}
if (diff.x() > 0) {
for (int i = 0; i < diff.x(); i++) {
slideRotations.enqueue(Right);
}
} else if (diff.x() < 0) {
diff.setX(-diff.x());
for (int i = 0; i < diff.x(); i++) {
slideRotations.enqueue(Left);
}
}
if (qAbs(diff.y()) > effects->desktopGridHeight() / 2) {
int sign = -1 * (diff.y() / qAbs(diff.y()));
diff.setY(sign *(effects->desktopGridHeight() - qAbs(diff.y())));
}
if (diff.y() > 0) {
for (int i = 0; i < diff.y(); i++) {
slideRotations.enqueue(Downwards);
}
}
if (diff.y() < 0) {
diff.setY(-diff.y());
for (int i = 0; i < diff.y(); i++) {
slideRotations.enqueue(Upwards);
}
}
} else {
// ignore pager layout
int left = old - current;
if (left < 0)
left = effects->numberOfDesktops() + left;
int right = current - old;
if (right < 0)
right = effects->numberOfDesktops() + right;
if (left < right) {
for (int i = 0; i < left; i++) {
slideRotations.enqueue(Left);
}
} else {
for (int i = 0; i < right; i++) {
slideRotations.enqueue(Right);
}
}
}
timeLine.setDuration((float)rotationDuration / (float)slideRotations.count());
if (activate) {
startAnimation();
front_desktop = old;
effects->addRepaintFull();
}
}
void CubeSlideEffect::startAnimation() {
const EffectWindowList windows = effects->stackingOrder();
for (EffectWindow* w : windows) {
if (!shouldAnimate(w)) {
w->setData(WindowForceBlurRole, QVariant(true));
w->setData(WindowForceBackgroundContrastRole, QVariant(true));
staticWindows.insert(w);
}
}
if (slideRotations.count() == 1) {
timeLine.setCurveShape(QTimeLine::EaseInOutCurve);
} else {
timeLine.setCurveShape(QTimeLine::EaseInCurve);
}
effects->setActiveFullScreenEffect(this);
timeLine.setCurrentTime(0);
}
void CubeSlideEffect::slotWindowAdded(EffectWindow* w) {
if (!isActive()) {
return;
}
if (!shouldAnimate(w)) {
staticWindows.insert(w);
w->setData(WindowForceBlurRole, QVariant(true));
w->setData(WindowForceBackgroundContrastRole, QVariant(true));
}
}
void CubeSlideEffect::slotWindowDeleted(EffectWindow* w) {
staticWindows.remove(w);
}
bool CubeSlideEffect::shouldAnimate(const EffectWindow* w) const
{
if (w->isDock()) {
return !dontSlidePanels;
}
if (w->isOnAllDesktops()) {
if (w->isDesktop()) {
return true;
}
if (w->isSpecialWindow()) {
return false;
}
return !dontSlideStickyWindows;
}
return true;
}
void CubeSlideEffect::slotWindowStepUserMovedResized(EffectWindow* w)
{
if (!useWindowMoving)
return;
if (!effects->kwinOption(SwitchDesktopOnScreenEdgeMovingWindows).toBool())
return;
if (w->isUserResize())
return;
const QSize screenSize = effects->virtualScreenSize();
const QPoint cursor = effects->cursorPos();
const int horizontal = screenSize.width() * 0.1;
const int vertical = screenSize.height() * 0.1;
const QRect leftRect(0, screenSize.height() * 0.1, horizontal, screenSize.height() * 0.8);
const QRect rightRect(screenSize.width() - horizontal, screenSize.height() * 0.1, horizontal, screenSize.height() * 0.8);
const QRect topRect(horizontal, 0, screenSize.width() * 0.8, vertical);
const QRect bottomRect(horizontal, screenSize.height() - vertical, screenSize.width() - horizontal * 2, vertical);
if (leftRect.contains(cursor)) {
if (effects->desktopToLeft(effects->currentDesktop()) != effects->currentDesktop())
windowMovingChanged(0.3 *(float)(horizontal - cursor.x()) / (float)horizontal, Left);
} else if (rightRect.contains(cursor)) {
if (effects->desktopToRight(effects->currentDesktop()) != effects->currentDesktop())
windowMovingChanged(0.3 *(float)(cursor.x() - screenSize.width() + horizontal) / (float)horizontal, Right);
} else if (topRect.contains(cursor)) {
if (effects->desktopAbove(effects->currentDesktop()) != effects->currentDesktop())
windowMovingChanged(0.3 *(float)(vertical - cursor.y()) / (float)vertical, Upwards);
} else if (bottomRect.contains(cursor)) {
if (effects->desktopBelow(effects->currentDesktop()) != effects->currentDesktop())
windowMovingChanged(0.3 *(float)(cursor.y() - screenSize.height() + vertical) / (float)vertical, Downwards);
} else {
// not in one of the areas
windowMoving = false;
desktopChangedWhileMoving = false;
timeLine.setCurrentTime(0);
if (!slideRotations.isEmpty())
slideRotations.clear();
effects->setActiveFullScreenEffect(nullptr);
effects->addRepaintFull();
}
}
void CubeSlideEffect::slotWindowFinishUserMovedResized(EffectWindow* w)
{
if (!useWindowMoving)
return;
if (!effects->kwinOption(SwitchDesktopOnScreenEdgeMovingWindows).toBool())
return;
if (w->isUserResize())
return;
if (!desktopChangedWhileMoving) {
if (slideRotations.isEmpty())
return;
const RotationDirection direction = slideRotations.dequeue();
switch(direction) {
case Left:
slideRotations.enqueue(Right);
break;
case Right:
slideRotations.enqueue(Left);
break;
case Upwards:
slideRotations.enqueue(Downwards);
break;
case Downwards:
slideRotations.enqueue(Upwards);
break;
default:
break; // impossible
}
timeLine.setCurrentTime(timeLine.duration() - timeLine.currentTime());
}
desktopChangedWhileMoving = false;
windowMoving = false;
effects->addRepaintFull();
}
void CubeSlideEffect::windowMovingChanged(float progress, RotationDirection direction)
{
if (desktopChangedWhileMoving)
progressRestriction = 1.0 - progress;
else
progressRestriction = progress;
front_desktop = effects->currentDesktop();
if (slideRotations.isEmpty()) {
slideRotations.enqueue(direction);
windowMoving = true;
startAnimation();
}
effects->addRepaintFull();
}
bool CubeSlideEffect::isActive() const
{
return !slideRotations.isEmpty();
}
void CubeSlideEffect::slotNumberDesktopsChanged()
{
// This effect animates only aftermaths of desktop switching. There is no any
// way to reference removed desktops for animation purposes. So our the best
// shot is just to do nothing. It doesn't look nice and we probaby have to
// find more proper way to handle this case.
if (!isActive()) {
return;
}
for (EffectWindow *w : staticWindows) {
w->setData(WindowForceBlurRole, QVariant());
w->setData(WindowForceBackgroundContrastRole, QVariant());
}
slideRotations.clear();
staticWindows.clear();
effects->setActiveFullScreenEffect(nullptr);
}
} // namespace