261 lines
7.2 KiB
C++
261 lines
7.2 KiB
C++
/*
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KWin - the KDE window manager
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This file is part of the KDE project.
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SPDX-FileCopyrightText: 2012 Martin Gräßlin <mgraesslin@kde.org>
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SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "focuschain.h"
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#include "window.h"
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#include "workspace.h"
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namespace KWin
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{
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KWIN_SINGLETON_FACTORY_VARIABLE(FocusChain, s_manager)
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FocusChain::FocusChain(QObject *parent)
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: QObject(parent)
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, m_separateScreenFocus(false)
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, m_activeWindow(nullptr)
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{
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}
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FocusChain::~FocusChain()
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{
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s_manager = nullptr;
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}
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void FocusChain::remove(Window *window)
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{
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for (auto it = m_desktopFocusChains.begin();
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it != m_desktopFocusChains.end();
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++it) {
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it.value().removeAll(window);
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}
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m_mostRecentlyUsed.removeAll(window);
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}
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void FocusChain::addDesktop(VirtualDesktop *desktop)
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{
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m_desktopFocusChains.insert(desktop, Chain());
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}
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void FocusChain::removeDesktop(VirtualDesktop *desktop)
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{
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if (m_currentDesktop == desktop) {
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m_currentDesktop = nullptr;
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}
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m_desktopFocusChains.remove(desktop);
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}
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Window *FocusChain::getForActivation(VirtualDesktop *desktop) const
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{
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return getForActivation(desktop, workspace()->activeOutput());
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}
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Window *FocusChain::getForActivation(VirtualDesktop *desktop, Output *output) const
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{
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auto it = m_desktopFocusChains.constFind(desktop);
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if (it == m_desktopFocusChains.constEnd()) {
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return nullptr;
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}
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const auto &chain = it.value();
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for (int i = chain.size() - 1; i >= 0; --i) {
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auto tmp = chain.at(i);
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// TODO: move the check into Window
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if (!tmp->isShade() && tmp->isShown() && tmp->isOnCurrentActivity()
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&& (!m_separateScreenFocus || tmp->output() == output)) {
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return tmp;
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}
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}
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return nullptr;
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}
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void FocusChain::update(Window *window, FocusChain::Change change)
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{
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if (!window->wantsTabFocus()) {
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// Doesn't want tab focus, remove
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remove(window);
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return;
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}
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if (window->isOnAllDesktops()) {
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// Now on all desktops, add it to focus chains it is not already in
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for (auto it = m_desktopFocusChains.begin();
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it != m_desktopFocusChains.end();
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++it) {
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auto &chain = it.value();
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// Making first/last works only on current desktop, don't affect all desktops
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if (it.key() == m_currentDesktop
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&& (change == MakeFirst || change == MakeLast)) {
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if (change == MakeFirst) {
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makeFirstInChain(window, chain);
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} else {
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makeLastInChain(window, chain);
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}
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} else {
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insertWindowIntoChain(window, chain);
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}
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}
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} else {
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// Now only on desktop, remove it anywhere else
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for (auto it = m_desktopFocusChains.begin();
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it != m_desktopFocusChains.end();
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++it) {
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auto &chain = it.value();
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if (window->isOnDesktop(it.key())) {
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updateWindowInChain(window, change, chain);
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} else {
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chain.removeAll(window);
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}
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}
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}
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// add for most recently used chain
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updateWindowInChain(window, change, m_mostRecentlyUsed);
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}
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void FocusChain::updateWindowInChain(Window *window, FocusChain::Change change, Chain &chain)
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{
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if (change == MakeFirst) {
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makeFirstInChain(window, chain);
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} else if (change == MakeLast) {
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makeLastInChain(window, chain);
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} else {
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insertWindowIntoChain(window, chain);
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}
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}
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void FocusChain::insertWindowIntoChain(Window *window, Chain &chain)
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{
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if (chain.contains(window)) {
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return;
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}
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if (m_activeWindow && m_activeWindow != window && !chain.empty() && chain.last() == m_activeWindow) {
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// Add it after the active window
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chain.insert(chain.size() - 1, window);
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} else {
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// Otherwise add as the first one
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chain.append(window);
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}
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}
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void FocusChain::moveAfterWindow(Window *window, Window *reference)
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{
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if (!window->wantsTabFocus()) {
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return;
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}
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for (auto it = m_desktopFocusChains.begin();
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it != m_desktopFocusChains.end();
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++it) {
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if (!window->isOnDesktop(it.key())) {
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continue;
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}
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moveAfterWindowInChain(window, reference, it.value());
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}
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moveAfterWindowInChain(window, reference, m_mostRecentlyUsed);
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}
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void FocusChain::moveAfterWindowInChain(Window *window, Window *reference, Chain &chain)
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{
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if (!chain.contains(reference)) {
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return;
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}
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if (Window::belongToSameApplication(reference, window)) {
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chain.removeAll(window);
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chain.insert(chain.indexOf(reference), window);
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} else {
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chain.removeAll(window);
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for (int i = chain.size() - 1; i >= 0; --i) {
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if (Window::belongToSameApplication(reference, chain.at(i))) {
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chain.insert(i, window);
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break;
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}
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}
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}
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}
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Window *FocusChain::firstMostRecentlyUsed() const
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{
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if (m_mostRecentlyUsed.isEmpty()) {
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return nullptr;
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}
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return m_mostRecentlyUsed.first();
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}
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Window *FocusChain::nextMostRecentlyUsed(Window *reference) const
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{
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if (m_mostRecentlyUsed.isEmpty()) {
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return nullptr;
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}
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const int index = m_mostRecentlyUsed.indexOf(reference);
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if (index == -1) {
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return m_mostRecentlyUsed.first();
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}
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if (index == 0) {
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return m_mostRecentlyUsed.last();
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}
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return m_mostRecentlyUsed.at(index - 1);
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}
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// copied from activation.cpp
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bool FocusChain::isUsableFocusCandidate(Window *c, Window *prev) const
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{
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return c != prev && !c->isShade() && c->isShown() && c->isOnCurrentDesktop() && c->isOnCurrentActivity() && (!m_separateScreenFocus || c->isOnOutput(prev ? prev->output() : workspace()->activeOutput()));
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}
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Window *FocusChain::nextForDesktop(Window *reference, VirtualDesktop *desktop) const
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{
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auto it = m_desktopFocusChains.constFind(desktop);
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if (it == m_desktopFocusChains.constEnd()) {
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return nullptr;
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}
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const auto &chain = it.value();
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for (int i = chain.size() - 1; i >= 0; --i) {
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auto window = chain.at(i);
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if (isUsableFocusCandidate(window, reference)) {
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return window;
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}
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}
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return nullptr;
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}
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void FocusChain::makeFirstInChain(Window *window, Chain &chain)
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{
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chain.removeAll(window);
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if (options->moveMinimizedWindowsToEndOfTabBoxFocusChain()) {
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if (window->isMinimized()) { // add it before the first minimized ...
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for (int i = chain.count() - 1; i >= 0; --i) {
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if (chain.at(i)->isMinimized()) {
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chain.insert(i + 1, window);
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return;
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}
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}
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chain.prepend(window); // ... or at end of chain
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} else {
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chain.append(window);
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}
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} else {
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chain.append(window);
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}
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}
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void FocusChain::makeLastInChain(Window *window, Chain &chain)
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{
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chain.removeAll(window);
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chain.prepend(window);
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}
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bool FocusChain::contains(Window *window, VirtualDesktop *desktop) const
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{
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auto it = m_desktopFocusChains.constFind(desktop);
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if (it == m_desktopFocusChains.constEnd()) {
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return false;
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}
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return it.value().contains(window);
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}
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} // namespace
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