527 lines
15 KiB
C++
527 lines
15 KiB
C++
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/*
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* Copyright 2007 Matt Broadstone <mbroadst@gmail.com>
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* Copyright 2007 Aaron Seigo <aseigo@kde.org>
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* Copyright 2007 Riccardo Iaconelli <riccardo@kde.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Library General Public License as
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* published by the Free Software Foundation; either version 2, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "corona.h"
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#include <QApplication>
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#include <QGraphicsView>
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#include <QGraphicsSceneDragDropEvent>
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#include <QGraphicsGridLayout>
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#include <QMimeData>
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#include <QPainter>
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#include <QTimer>
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#include <KDebug>
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#include <KGlobal>
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#include <KLocale>
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#include <KMimeType>
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#include "containment.h"
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#include "view.h"
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#include "private/applet_p.h"
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#include "tooltipmanager.h"
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using namespace Plasma;
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namespace Plasma
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{
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// constant controlling how long between requesting a configuration sync
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// and one happening should occur. currently 10 seconds
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const int CONFIG_SYNC_TIMEOUT = 10000;
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class CoronaPrivate
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{
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public:
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CoronaPrivate(Corona *corona)
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: q(corona),
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immutability(Mutable),
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mimetype("text/x-plasmoidservicename"),
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config(0),
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offscreenLayout(0)
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{
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if (KGlobal::hasMainComponent()) {
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configName = KGlobal::mainComponent().componentName() + "-appletsrc";
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} else {
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configName = "plasma-appletsrc";
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}
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}
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~CoronaPrivate()
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{
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qDeleteAll(containments);
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}
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void init()
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{
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configSyncTimer.setSingleShot(true);
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QObject::connect(&configSyncTimer, SIGNAL(timeout()), q, SLOT(syncConfig()));
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}
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void saveLayout(KSharedConfigPtr cg) const
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{
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KConfigGroup containmentsGroup(cg, "Containments");
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foreach (const Containment *containment, containments) {
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QString cid = QString::number(containment->id());
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KConfigGroup containmentConfig(&containmentsGroup, cid);
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containment->save(containmentConfig);
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}
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}
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void updateContainmentImmutability()
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{
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foreach (Containment *c, containments) {
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// we need to tell each containment that immutability has been altered
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c->updateConstraints(ImmutableConstraint);
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}
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}
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void containmentDestroyed(QObject *obj)
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{
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// we do a static_cast here since it really isn't an Containment by this
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// point anymore since we are in the qobject dtor. we don't actually
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// try and do anything with it, we just need the value of the pointer
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// so this unsafe looking code is actually just fine.
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Containment* containment = static_cast<Plasma::Containment*>(obj);
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int index = containments.indexOf(containment);
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if (index > -1) {
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containments.removeAt(index);
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q->requestConfigSync();
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}
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}
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void syncConfig()
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{
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q->config()->sync();
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emit q->configSynced();
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}
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Containment *addContainment(const QString &name, const QVariantList &args,
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uint id, bool delayedInit)
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{
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QString pluginName = name;
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Containment *containment = 0;
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Applet *applet = 0;
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//kDebug() << "Loading" << name << args << id;
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if (pluginName.isEmpty()) {
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// default to the desktop containment
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pluginName = "desktop";
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}
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if (pluginName != "null") {
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applet = Applet::load(pluginName, id, args);
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containment = dynamic_cast<Containment*>(applet);
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}
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if (!containment) {
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kDebug() << "loading of containment" << name << "failed.";
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// in case we got a non-Containment from Applet::loadApplet or
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// a null containment was requested
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delete applet;
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containment = new Containment(0, 0, id);
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if (pluginName == "null") {
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containment->setDrawWallpaper(false);
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}
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// we want to provide something and don't care about the failure to launch
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containment->setFailedToLaunch(false);
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containment->setFormFactor(Plasma::Planar);
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}
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static_cast<Applet*>(containment)->d->setIsContainment(true);
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q->addItem(containment);
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if (!delayedInit) {
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containment->init();
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containment->updateConstraints(Plasma::StartupCompletedConstraint);
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KConfigGroup cg = containment->config();
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containment->save(cg);
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q->requestConfigSync();
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}
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containments.append(containment);
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QObject::connect(containment, SIGNAL(destroyed(QObject*)),
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q, SLOT(containmentDestroyed(QObject*)));
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QObject::connect(containment, SIGNAL(configNeedsSaving()),
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q, SLOT(requestConfigSync()));
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QObject::connect(containment, SIGNAL(releaseVisualFocus()),
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q, SIGNAL(releaseVisualFocus()));
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QObject::connect(containment, SIGNAL(screenChanged(int,int,Plasma::Containment*)),
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q, SIGNAL(screenOwnerChanged(int,int,Plasma::Containment*)));
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if (!delayedInit) {
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emit q->containmentAdded(containment);
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}
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return containment;
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}
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Corona *q;
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ImmutabilityType immutability;
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QString mimetype;
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QString configName;
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KSharedConfigPtr config;
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QTimer configSyncTimer;
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QList<Containment*> containments;
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QGraphicsGridLayout *offscreenLayout;
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};
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Corona::Corona(QObject *parent)
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: QGraphicsScene(parent),
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d(new CoronaPrivate(this))
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{
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d->init();
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ToolTipManager::self()->m_corona = this;
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//setViewport(new QGLWidget(QGLFormat(QGL::StencilBuffer | QGL::AlphaChannel)));
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}
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Corona::~Corona()
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{
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// FIXME: Same fix as in Plasma::View - make sure that when the focused widget is
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// destroyed we don't try to transfer it to something that's already been
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// deleted.
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clearFocus();
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KConfigGroup cg(config(), "General");
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// we call the dptr member directly for locked since isImmutable()
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// also checks kiosk and parent containers
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cg.writeEntry("immutability", (int)d->immutability);
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delete d;
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}
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void Corona::setAppletMimeType(const QString &type)
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{
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d->mimetype = type;
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}
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QString Corona::appletMimeType()
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{
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return d->mimetype;
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}
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void Corona::saveLayout(const QString &configName) const
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{
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KSharedConfigPtr c;
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if (configName.isEmpty() || configName == d->configName) {
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c = config();
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} else {
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c = KSharedConfig::openConfig(configName);
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}
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d->saveLayout(c);
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}
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void Corona::requestConfigSync()
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{
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// TODO: should we check into our immutability before doing this?
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//NOTE: this is a pretty simplistic model: we simply save no more than CONFIG_SYNC_TIMEOUT
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// after the first time this is called. not much of a heuristic for save points, but
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// it should at least compress these activities a bit and provide a way for applet
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// authors to ween themselves from the sync() disease. A more interesting/dynamic
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// algorithm for determining when to actually sync() to disk might be better, though.
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if (!d->configSyncTimer.isActive()) {
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d->configSyncTimer.start(CONFIG_SYNC_TIMEOUT);
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}
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}
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void Corona::initializeLayout(const QString &configName)
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{
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clearContainments();
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loadLayout(configName);
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if (d->containments.isEmpty()) {
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loadDefaultLayout();
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if (!d->containments.isEmpty()) {
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requestConfigSync();
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}
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}
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if (config()->isImmutable()) {
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d->updateContainmentImmutability();
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}
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KConfigGroup coronaConfig(config(), "General");
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setImmutability((ImmutabilityType)coronaConfig.readEntry("immutability", (int)Mutable));
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}
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void Corona::loadLayout(const QString &configName)
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{
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KSharedConfigPtr c;
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if (configName.isEmpty() || configName == d->configName) {
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c = config();
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} else {
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c = KSharedConfig::openConfig(configName);
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}
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KConfigGroup containments(config(), "Containments");
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foreach (const QString &group, containments.groupList()) {
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KConfigGroup containmentConfig(&containments, group);
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if (containmentConfig.entryMap().isEmpty()) {
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continue;
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}
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int cid = group.toUInt();
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//kDebug() << "got a containment in the config, trying to make a" << containmentConfig.readEntry("plugin", QString()) << "from" << group;
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Containment *c = d->addContainment(containmentConfig.readEntry("plugin", QString()), QVariantList(),
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cid, true);
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if (!c) {
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continue;
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}
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//addItem(c);
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c->init();
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c->restore(containmentConfig);
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}
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foreach (Containment *containment, d->containments) {
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QString cid = QString::number(containment->id());
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KConfigGroup containmentConfig(&containments, cid);
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foreach (Applet *applet, containment->applets()) {
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applet->init();
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// We have to flush the applet constraints manually
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applet->flushPendingConstraintsEvents();
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}
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containment->updateConstraints(Plasma::StartupCompletedConstraint);
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containment->flushPendingConstraintsEvents();
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emit containmentAdded(containment);
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}
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}
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Containment *Corona::containmentForScreen(int screen) const
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{
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foreach (Containment *containment, d->containments) {
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if (containment->screen() == screen &&
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(containment->containmentType() == Containment::DesktopContainment ||
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containment->containmentType() >= Containment::CustomContainment)) {
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return containment;
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}
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}
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return 0;
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}
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QList<Containment*> Corona::containments() const
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{
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return d->containments;
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}
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void Corona::clearContainments()
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{
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foreach (Containment *containment, d->containments) {
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containment->clearApplets();
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}
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}
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KSharedConfigPtr Corona::config() const
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{
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if (!d->config) {
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d->config = KSharedConfig::openConfig(d->configName);
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}
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return d->config;
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}
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Containment *Corona::addContainment(const QString &name, const QVariantList &args)
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{
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return d->addContainment(name, args, 0, false);
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}
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Containment *Corona::addContainmentDelayed(const QString &name, const QVariantList &args)
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{
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return d->addContainment(name, args, 0, true);
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}
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void Corona::addOffscreenWidget(QGraphicsWidget *widget)
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{
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widget->setParentItem(0);
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if (!d->offscreenLayout) {
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kDebug() << "adding offscreen widget.";
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QGraphicsWidget *offscreenWidget = new QGraphicsWidget(0);
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addItem(offscreenWidget);
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d->offscreenLayout = new QGraphicsGridLayout(offscreenWidget);
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//FIXME: do this a nice way.
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offscreenWidget->setPos(-10000, -10000);
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offscreenWidget->setLayout(d->offscreenLayout);
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}
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//check if the layout already contains this widget.
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//XXX: duplicated from removeOffscreenWidget()
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for (int i = 0; i < d->offscreenLayout->count(); i++) {
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QGraphicsWidget *foundWidget = dynamic_cast<QGraphicsWidget*>(d->offscreenLayout->itemAt(i));
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if (foundWidget == widget) {
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return;
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}
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}
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d->offscreenLayout->addItem(widget, d->offscreenLayout->rowCount() + 1,
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d->offscreenLayout->columnCount() + 1);
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widget->update();
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}
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void Corona::removeOffscreenWidget(QGraphicsWidget *widget)
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{
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if (!d->offscreenLayout) {
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return;
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}
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for (int i = 0; i < d->offscreenLayout->count(); i++) {
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QGraphicsWidget *foundWidget = dynamic_cast<QGraphicsWidget*>(d->offscreenLayout->itemAt(i));
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if (foundWidget == widget) {
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d->offscreenLayout->removeAt(i);
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}
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}
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}
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int Corona::numScreens() const
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{
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return 1;
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}
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QRect Corona::screenGeometry(int id) const
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{
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Q_UNUSED(id);
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if (views().isEmpty()) {
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return sceneRect().toRect();
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} else {
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QGraphicsView *v = views()[0];
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QRect r = sceneRect().toRect();
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r.moveTo(v->mapToGlobal(v->pos()));
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return r;
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}
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}
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QRegion Corona::availableScreenRegion(int id) const
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{
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return QRegion(screenGeometry(id));
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}
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QPoint Corona::popupPosition(const QGraphicsItem *item, const QSize &s)
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{
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QGraphicsView *v = viewFor(item);
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if (!v) {
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return QPoint(0, 0);
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}
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QPoint pos = v->mapFromScene(item->scenePos());
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pos = v->mapToGlobal(pos);
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//kDebug() << "==> position is" << item->scenePos() << v->mapFromScene(item->scenePos()) << pos;
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Plasma::View *pv = dynamic_cast<Plasma::View *>(v);
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Plasma::Location loc = Floating;
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if (pv && pv->containment()) {
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loc = pv->containment()->location();
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}
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switch (loc) {
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case BottomEdge:
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pos = QPoint(pos.x(), pos.y() - s.height());
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break;
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case TopEdge:
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pos = QPoint(pos.x(), pos.y() + (int)item->boundingRect().size().height());
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break;
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case LeftEdge:
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pos = QPoint(pos.x() + (int)item->boundingRect().size().width(), pos.y());
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break;
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case RightEdge:
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pos = QPoint(pos.x() - s.width(), pos.y());
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break;
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default:
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||
|
if (pos.y() - s.height() > 0) {
|
||
|
pos = QPoint(pos.x(), pos.y() - s.height());
|
||
|
} else {
|
||
|
pos = QPoint(pos.x(), pos.y() + (int)item->boundingRect().size().height());
|
||
|
}
|
||
|
}
|
||
|
|
||
|
//are we out of screen?
|
||
|
QRect screenRect =
|
||
|
screenGeometry((pv && pv->containment()) ? pv->containment()->screen() : -1);
|
||
|
//kDebug() << "==> rect for" << (pv ? pv->containment()->screen() : -1) << "is" << screenRect;
|
||
|
|
||
|
if (pos.rx() + s.width() > screenRect.right()) {
|
||
|
pos.rx() -= ((pos.rx() + s.width()) - screenRect.right());
|
||
|
}
|
||
|
|
||
|
if (pos.ry() + s.height() > screenRect.bottom()) {
|
||
|
pos.ry() -= ((pos.ry() + s.height()) - screenRect.bottom());
|
||
|
}
|
||
|
|
||
|
pos.rx() = qMax(0, pos.rx());
|
||
|
return pos;
|
||
|
}
|
||
|
|
||
|
|
||
|
|
||
|
void Corona::loadDefaultLayout()
|
||
|
{
|
||
|
}
|
||
|
|
||
|
void Corona::dragEnterEvent(QGraphicsSceneDragDropEvent *event)
|
||
|
{
|
||
|
QGraphicsScene::dragEnterEvent(event);
|
||
|
}
|
||
|
|
||
|
void Corona::dragLeaveEvent(QGraphicsSceneDragDropEvent *event)
|
||
|
{
|
||
|
QGraphicsScene::dragLeaveEvent(event);
|
||
|
}
|
||
|
|
||
|
void Corona::dragMoveEvent(QGraphicsSceneDragDropEvent *event)
|
||
|
{
|
||
|
QGraphicsScene::dragMoveEvent(event);
|
||
|
}
|
||
|
|
||
|
ImmutabilityType Corona::immutability() const
|
||
|
{
|
||
|
return d->immutability;
|
||
|
}
|
||
|
|
||
|
void Corona::setImmutability(const ImmutabilityType immutable)
|
||
|
{
|
||
|
if (d->immutability == immutable ||
|
||
|
d->immutability == SystemImmutable) {
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
kDebug() << "setting immutability to" << immutable;
|
||
|
d->immutability = immutable;
|
||
|
d->updateContainmentImmutability();
|
||
|
}
|
||
|
|
||
|
} // namespace Plasma
|
||
|
|
||
|
#include "corona.moc"
|
||
|
|