plasma-framework/src/shell/desktopcorona.cpp
2013-05-14 18:34:40 +02:00

333 lines
10 KiB
C++

/*
* Copyright 2008 Aaron Seigo <aseigo@kde.org>
* Copyright 2013 Sebastian Kügler <sebas@kde.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Library General Public License as
* published by the Free Software Foundation; either version 2, 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 Library General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "desktopcorona.h"
#include <QApplication>
#include <QDebug>
#include <QDesktopWidget>
#include <QQmlContext>
#include <QTimer>
#include <KLocalizedString>
#include <Plasma/Package>
#include "containmentconfigview.h"
#include "panelview.h"
#include "view.h"
#include "scripting/desktopscriptengine.h"
#include "widgetexplorer/widgetexplorerview.h"
static const QString s_panelTemplatesPath("plasma-layout-templates/panels/*");
DesktopCorona::DesktopCorona(QObject *parent)
: Plasma::Corona(parent),
m_desktopWidget(QApplication::desktop()),
m_widgetExplorerView(0)
{
m_desktopDefaultsConfig = KConfigGroup(KSharedConfig::openConfig(package().filePath("defaults")), "Desktop");
m_appConfigSyncTimer = new QTimer(this);
m_appConfigSyncTimer->setSingleShot(true);
connect(m_appConfigSyncTimer, &QTimer::timeout,
this, &DesktopCorona::syncAppConfig);
connect(m_desktopWidget, SIGNAL(resized(int)),
this, SLOT(screenResized(int)));
connect(m_desktopWidget, SIGNAL(screenCountChanged(int)),
this, SLOT(screenCountChanged(int)));
connect(m_desktopWidget, SIGNAL(workAreaResized(int)),
this, SLOT(workAreaResized(int)));
connect(this, &DesktopCorona::containmentAdded, this, &DesktopCorona::handleContainmentAdded);
connect(this, SIGNAL(screenOwnerChanged(int, int, Plasma::Containment *)),
this, SLOT(updateScreenOwner(int, int, Plasma::Containment *)));
checkViews();
//QTimer::singleShot(600, this, SLOT(showWidgetExplorer())); // just for easier debugging
}
DesktopCorona::~DesktopCorona()
{
}
KSharedConfig::Ptr DesktopCorona::applicationConfig()
{
return KSharedConfig::openConfig();
}
void DesktopCorona::requestApplicationConfigSync()
{
// constant controlling how long between requesting a configuration sync
// and one happening should occur. currently 10 seconds
static const int CONFIG_SYNC_TIMEOUT = 10000;
m_appConfigSyncTimer->start(CONFIG_SYNC_TIMEOUT);
}
void DesktopCorona::loadDefaultLayout()
{
WorkspaceScripting::DesktopScriptEngine scriptEngine(this, true);
connect(&scriptEngine, &WorkspaceScripting::ScriptEngine::printError,
this, &DesktopCorona::printScriptError);
connect(&scriptEngine, &WorkspaceScripting::ScriptEngine::print,
this, &DesktopCorona::printScriptMessage);
QString script = package().filePath("defaultlayout");
QFile file(script);
if (file.open(QIODevice::ReadOnly | QIODevice::Text) ) {
QString code = file.readAll();
qDebug() << "evaluating startup script:" << script;
scriptEngine.evaluateScript(code);
}
}
void DesktopCorona::processUpdateScripts()
{
foreach (const QString &script, WorkspaceScripting::ScriptEngine::pendingUpdateScripts(this)) {
WorkspaceScripting::DesktopScriptEngine scriptEngine(this, false);
scriptEngine.evaluateScript(script);
}
}
void DesktopCorona::checkScreens(bool signalWhenExists)
{
// quick sanity check to ensure we have containments for each screen
int num = numScreens();
for (int i = 0; i < num; ++i) {
checkScreen(i, signalWhenExists);
}
}
void DesktopCorona::checkScreen(int screen, bool signalWhenExists)
{
// signalWhenExists is there to allow PlasmaApp to know when to create views
// it does this only on containment addition, but in the case of a screen being
// added and the containment already existing for that screen, no signal is emitted
// and so PlasmaApp does not know that it needs to create a view for it. to avoid
// taking care of that case in PlasmaApp (which would duplicate some of the code below,
// DesktopCorona will, when signalWhenExists is true, emit a containmentAdded signal
// even if the containment actually existed prior to this method being called.
//
//note: hte signal actually triggers view creation only for panels, atm.
//desktop views are created in response to containment's screenChanged signal instead, which is
//buggy (sometimes the containment thinks it's already on the screen, so no view is created)
//TODO: restore activities
//Activity *currentActivity = activity(m_activityController->currentActivity());
//ensure the desktop(s) have a containment and view
checkDesktop(/*currentActivity,*/ signalWhenExists, screen);
//ensure the panels get views too
if (signalWhenExists) {
foreach (Plasma::Containment * c, containments()) {
if (c->screen() != screen) {
continue;
}
Plasma::Types::ContainmentType t = c->containmentType();
if (t == Plasma::Types::PanelContainment ||
t == Plasma::Types::CustomPanelContainment) {
emit containmentAdded(c);
}
}
}
}
void DesktopCorona::checkDesktop(/*Activity *activity,*/ bool signalWhenExists, int screen)
{
Plasma::Containment *c = /*activity->*/containmentForScreen(screen);
//TODO: remove following when activities are restored
if (!c) {
c = createContainment(m_desktopDefaultsConfig.readEntry("Containment", "org.kde.testcontainment"));
}
if (!c) {
return;
}
c->setScreen(screen);
if (screen >= 0 || m_views.count() >= screen + 1) {
m_views[screen]->setContainment(c);
} else {
qWarning() << "Invalid screen";
}
c->flushPendingConstraintsEvents();
requestApplicationConfigSync();
if (signalWhenExists) {
emit containmentAdded(c);
}
}
int DesktopCorona::numScreens() const
{
return m_desktopWidget->screenCount();
}
QRect DesktopCorona::screenGeometry(int id) const
{
return m_desktopWidget->screenGeometry(id);
}
QRegion DesktopCorona::availableScreenRegion(int id) const
{
return m_desktopWidget->availableGeometry(id);
}
QRect DesktopCorona::availableScreenRect(int id) const
{
return m_desktopWidget->availableGeometry(id);
}
PanelView *DesktopCorona::panelView(Plasma::Containment *containment) const
{
return m_panelViews.value(containment);
}
///// SLOTS
void DesktopCorona::screenCountChanged(int newCount)
{
qDebug() << "New screen count" << newCount;
checkViews();
}
void DesktopCorona::screenResized(int screen)
{
qDebug() << "Screen resized" << screen;
}
void DesktopCorona::workAreaResized(int screen)
{
qDebug() << "Work area resized" << screen;
}
void DesktopCorona::checkViews()
{
if (m_views.count() == m_desktopWidget->screenCount()) {
return;
} else if (m_views.count() < m_desktopWidget->screenCount()) {
for (int i = m_views.count(); i < m_desktopWidget->screenCount(); ++i) {
View *view = new View(this);
QSurfaceFormat format;
view->init();
view->show();
m_views << view;
}
} else {
for (int i = m_desktopWidget->screenCount(); i < m_views.count(); ++i) {
View *view = m_views.last();
view->deleteLater();
m_views.pop_back();
}
}
//check every containment is in proper view
for (int i = 0; i < m_desktopWidget->screenCount(); ++i) {
qDebug() << "TODO: Implement loading containments into the views";
}
}
void DesktopCorona::updateScreenOwner(int wasScreen, int isScreen, Plasma::Containment *containment)
{
qDebug() << "Was screen" << wasScreen << "Is screen" << isScreen <<"Containment" << containment << containment->title();
if (containment->formFactor() == Plasma::Types::Horizontal ||
containment->formFactor() == Plasma::Types::Vertical) {
if (isScreen >= 0) {
m_panelViews[containment] = new PanelView(this);
m_panelViews[containment]->init();
m_panelViews[containment]->setContainment(containment);
m_panelViews[containment]->show();
} else {
if (m_panelViews.contains(containment)) {
m_panelViews[containment]->setContainment(0);
m_panelViews[containment]->deleteLater();
m_panelViews.remove(containment);
}
}
//Desktop view
} else {
if (isScreen < 0 || m_views.count() < isScreen + 1) {
qWarning() << "Invalid screen";
return;
}
m_views[isScreen]->setContainment(containment);
}
}
void DesktopCorona::handleContainmentAdded(Plasma::Containment* c)
{
connect(c, &Plasma::Containment::showAddWidgetsInterface,
this, &DesktopCorona::showWidgetExplorer);
}
void DesktopCorona::showWidgetExplorer()
{
if (!m_widgetExplorerView) {
QString expqml = package().filePath("widgetexplorer");
qDebug() << "Script to load for WidgetExplorer: " << expqml;
m_widgetExplorerView = new WidgetExplorerView(expqml);
m_widgetExplorerView->init();
}
Plasma::Containment *c = 0;
c = dynamic_cast<Plasma::Containment*>(sender());
if (c) {
qDebug() << "Found containment.";
m_widgetExplorerView->setContainment(c);
} else {
// FIXME: try harder to find a suitable containment?
qWarning() << "containment not set, don't know where to add the applet.";
}
m_widgetExplorerView->show();
}
void DesktopCorona::syncAppConfig()
{
qDebug() << "Syncing plasma-shellrc config";
applicationConfig()->sync();
}
void DesktopCorona::printScriptError(const QString &error)
{
qWarning() << error;
}
void DesktopCorona::printScriptMessage(const QString &message)
{
qDebug() << message;
}
#include "moc_desktopcorona.cpp"