kwin/src/item.cpp

392 lines
8.5 KiB
C++
Raw Normal View History

/*
SPDX-FileCopyrightText: 2021 Vlad Zahorodnii <vlad.zahorodnii@kde.org>
SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "item.h"
#include "composite.h"
#include "main.h"
#include "output.h"
#include "platform.h"
#include "renderloop.h"
#include "scene.h"
#include "screens.h"
2022-01-18 08:35:52 +00:00
#include "utils/common.h"
namespace KWin
{
Item::Item(Item *parent)
{
setParentItem(parent);
connect(kwinApp()->platform(), &Platform::outputDisabled, this, &Item::removeRepaints);
}
Item::~Item()
{
setParentItem(nullptr);
for (const auto &dirty : qAsConst(m_repaints)) {
if (!dirty.isEmpty()) {
Compositor::self()->scene()->addRepaint(dirty);
}
}
}
int Item::z() const
{
return m_z;
}
void Item::setZ(int z)
{
if (m_z == z) {
return;
}
m_z = z;
if (m_parentItem) {
m_parentItem->markSortedChildItemsDirty();
}
scheduleRepaint(boundingRect());
}
Item *Item::parentItem() const
{
return m_parentItem;
}
void Item::setParentItem(Item *item)
{
if (m_parentItem == item) {
return;
}
if (m_parentItem) {
m_parentItem->removeChild(this);
}
m_parentItem = item;
if (m_parentItem) {
m_parentItem->addChild(this);
}
updateEffectiveVisibility();
}
void Item::addChild(Item *item)
{
Q_ASSERT(!m_childItems.contains(item));
m_childItems.append(item);
markSortedChildItemsDirty();
updateBoundingRect();
scheduleRepaint(item->boundingRect().translated(item->position()));
}
void Item::removeChild(Item *item)
{
Q_ASSERT(m_childItems.contains(item));
scheduleRepaint(item->boundingRect().translated(item->position()));
m_childItems.removeOne(item);
markSortedChildItemsDirty();
updateBoundingRect();
}
QList<Item *> Item::childItems() const
{
return m_childItems;
}
QPoint Item::position() const
{
return m_position;
}
void Item::setPosition(const QPoint &point)
{
if (m_position != point) {
scheduleRepaint(boundingRect());
m_position = point;
if (m_parentItem) {
m_parentItem->updateBoundingRect();
}
scheduleRepaint(boundingRect());
Q_EMIT positionChanged();
}
}
QSize Item::size() const
{
return m_size;
}
void Item::setSize(const QSize &size)
{
if (m_size != size) {
scheduleRepaint(rect());
m_size = size;
updateBoundingRect();
scheduleRepaint(rect());
discardQuads();
Q_EMIT sizeChanged();
}
}
QRect Item::rect() const
{
return QRect(QPoint(0, 0), size());
}
QRect Item::boundingRect() const
{
return m_boundingRect;
}
void Item::updateBoundingRect()
{
QRect boundingRect = rect();
for (Item *item : qAsConst(m_childItems)) {
boundingRect |= item->boundingRect().translated(item->position());
}
if (m_boundingRect != boundingRect) {
m_boundingRect = boundingRect;
Q_EMIT boundingRectChanged();
if (m_parentItem) {
m_parentItem->updateBoundingRect();
}
}
}
QPoint Item::rootPosition() const
{
QPoint ret = position();
Item *parent = parentItem();
while (parent) {
ret += parent->position();
parent = parent->parentItem();
}
return ret;
}
QMatrix4x4 Item::transform() const
{
return m_transform;
}
void Item::setTransform(const QMatrix4x4 &transform)
{
m_transform = transform;
}
QRegion Item::mapToGlobal(const QRegion &region) const
{
return region.translated(rootPosition());
}
QRect Item::mapToGlobal(const QRect &rect) const
{
return rect.translated(rootPosition());
}
void Item::stackBefore(Item *sibling)
{
if (Q_UNLIKELY(!sibling)) {
qCDebug(KWIN_CORE) << Q_FUNC_INFO << "requires a valid sibling";
return;
}
if (Q_UNLIKELY(!sibling->parentItem() || sibling->parentItem() != parentItem())) {
qCDebug(KWIN_CORE) << Q_FUNC_INFO << "requires items to be siblings";
return;
}
if (Q_UNLIKELY(sibling == this)) {
return;
}
const int selfIndex = m_parentItem->m_childItems.indexOf(this);
const int siblingIndex = m_parentItem->m_childItems.indexOf(sibling);
if (selfIndex == siblingIndex - 1) {
return;
}
m_parentItem->m_childItems.move(selfIndex, selfIndex > siblingIndex ? siblingIndex : siblingIndex - 1);
markSortedChildItemsDirty();
scheduleRepaint(boundingRect());
sibling->scheduleRepaint(sibling->boundingRect());
}
void Item::stackAfter(Item *sibling)
{
if (Q_UNLIKELY(!sibling)) {
qCDebug(KWIN_CORE) << Q_FUNC_INFO << "requires a valid sibling";
return;
}
if (Q_UNLIKELY(!sibling->parentItem() || sibling->parentItem() != parentItem())) {
qCDebug(KWIN_CORE) << Q_FUNC_INFO << "requires items to be siblings";
return;
}
if (Q_UNLIKELY(sibling == this)) {
return;
}
const int selfIndex = m_parentItem->m_childItems.indexOf(this);
const int siblingIndex = m_parentItem->m_childItems.indexOf(sibling);
if (selfIndex == siblingIndex + 1) {
return;
}
m_parentItem->m_childItems.move(selfIndex, selfIndex > siblingIndex ? siblingIndex + 1 : siblingIndex);
markSortedChildItemsDirty();
scheduleRepaint(boundingRect());
sibling->scheduleRepaint(sibling->boundingRect());
}
void Item::scheduleRepaint(const QRegion &region)
{
if (isVisible()) {
scheduleRepaintInternal(region);
}
}
void Item::scheduleRepaintInternal(const QRegion &region)
{
const QVector<Output *> outputs = kwinApp()->platform()->enabledOutputs();
const QRegion globalRegion = mapToGlobal(region);
if (kwinApp()->operationMode() != Application::OperationModeX11) {
for (const auto &output : outputs) {
const QRegion dirtyRegion = globalRegion & output->geometry();
if (!dirtyRegion.isEmpty()) {
m_repaints[output] += dirtyRegion;
output->renderLoop()->scheduleRepaint(this);
}
}
} else {
m_repaints[outputs.constFirst()] += globalRegion;
outputs.constFirst()->renderLoop()->scheduleRepaint(this);
}
}
void Item::scheduleFrame()
{
if (!isVisible()) {
return;
}
const QVector<Output *> outputs = kwinApp()->platform()->enabledOutputs();
if (kwinApp()->operationMode() != Application::OperationModeX11) {
const QRect geometry = mapToGlobal(rect());
for (const Output *output : outputs) {
if (output->geometry().intersects(geometry)) {
output->renderLoop()->scheduleRepaint(this);
}
}
} else {
outputs.constFirst()->renderLoop()->scheduleRepaint(this);
}
}
void Item::preprocess()
{
}
WindowQuadList Item::buildQuads() const
{
return WindowQuadList();
}
void Item::discardQuads()
{
m_quads.reset();
}
WindowQuadList Item::quads() const
{
if (!m_quads.has_value()) {
m_quads = buildQuads();
}
return m_quads.value();
}
QRegion Item::repaints(Output *output) const
{
return m_repaints.value(output, QRect(QPoint(0, 0), screens()->size()));
}
void Item::resetRepaints(Output *output)
{
m_repaints.insert(output, QRegion());
}
void Item::removeRepaints(Output *output)
{
m_repaints.remove(output);
}
bool Item::explicitVisible() const
{
return m_explicitVisible;
}
bool Item::isVisible() const
{
return m_effectiveVisible;
}
void Item::setVisible(bool visible)
{
if (m_explicitVisible != visible) {
m_explicitVisible = visible;
updateEffectiveVisibility();
}
}
bool Item::computeEffectiveVisibility() const
{
return m_explicitVisible && (!m_parentItem || m_parentItem->isVisible());
}
void Item::updateEffectiveVisibility()
{
const bool effectiveVisible = computeEffectiveVisibility();
if (m_effectiveVisible == effectiveVisible) {
return;
}
m_effectiveVisible = effectiveVisible;
if (!m_effectiveVisible) {
Compositor::self()->scene()->addRepaint(mapToGlobal(boundingRect()));
} else {
scheduleRepaintInternal(boundingRect());
}
for (Item *childItem : qAsConst(m_childItems)) {
childItem->updateEffectiveVisibility();
}
}
static bool compareZ(const Item *a, const Item *b)
{
return a->z() < b->z();
}
QList<Item *> Item::sortedChildItems() const
{
if (!m_sortedChildItems.has_value()) {
QList<Item *> items = m_childItems;
std::stable_sort(items.begin(), items.end(), compareZ);
m_sortedChildItems = items;
}
return m_sortedChildItems.value();
}
void Item::markSortedChildItemsDirty()
{
m_sortedChildItems.reset();
}
} // namespace KWin