plasma-framework/corona.cpp

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/*
* Copyright 2007 Matt Broadstone <mbroadst@gmail.com>
* Copyright 2007 Aaron Seigo <aseigo@kde.org>
* Copyright 2007 Riccardo Iaconelli <riccardo@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 "corona.h"
#include <QApplication>
#include <QDesktopWidget>
#include <QGraphicsSceneDragDropEvent>
#include <QMimeData>
#include <QUrl>
#include <QGraphicsView>
#include <QStringList>
#include <KDebug>
#include <KLocale>
#include <KMimeType>
#include <KWindowSystem>
#include "containment.h"
#include "dataengine.h"
#include "phase.h"
#include "widgets/freelayout.h"
This breaks the existing Plasma applet API, see the contentSize() comments below. * New Flow Layout. This provides simple icon view-esque layout of items. Useful for icons for documents , applications or other tasks on the desktop for example. Supports non-equally sized items. Works well when used with the LayoutAnimator class to animate insertions and removals. * Re-wrote BoxLayout and removed old HBoxLayout,VBoxLayout classes which had a lot of code duplication. BoxLayout class now takes a direction argument in the constructor, ala. QBoxLayout. New BoxLayout class actually takes minimumSize() , maximumSize() of items into account. The Qt layout code for box and grid layouts is surprisingly sophisticated, so the results from BoxLayout probably will not be as good in certain situations but it should do for the panel. New BoxLayout also has support for LayoutAnimator * Fix Plasma::HBoxLayout and Plasma::VBoxLayout to use margin() rather than spacing() for the distance from the top and left margins respectively. * Fix Plasma::Applet::contentSize() to return the actual content size rather than a size hint. Added a new method contentSizeHint() which applets use to provide a hint about suitable content size. Existing implementations of contentSize() in applets need to be renamed to contentSizeHint(). The arguments and return type are the same as before. * Install the LayoutAnimator header so that applets can use it svn path=/trunk/KDE/kdebase/workspace/libs/plasma/; revision=707275
2007-09-01 14:34:22 +02:00
#include "widgets/boxlayout.h"
#include "widgets/icon.h"
using namespace Plasma;
namespace Plasma
{
class Corona::Private
{
public:
Private()
: immutable(false),
mimetype("text/x-plasmoidservicename")
{
}
~Private()
{
}
bool immutable;
QString mimetype;
QList<Containment*> containments;
};
Corona::Corona(QObject *parent)
: QGraphicsScene(parent),
d(new Private)
{
//d->init(this);
//setViewport(new QGLWidget(QGLFormat(QGL::StencilBuffer | QGL::AlphaChannel)));
}
Corona::Corona(const QRectF & sceneRect, QObject * parent )
: QGraphicsScene(sceneRect, parent),
d(new Private)
{
//d->init(this);
//setViewport(new QGLWidget(QGLFormat(QGL::StencilBuffer | QGL::AlphaChannel)));
}
Corona::Corona(qreal x, qreal y, qreal width, qreal height, QObject * parent)
: QGraphicsScene(x, y, width, height, parent),
d(new Private)
{
//d->init(this);
//setViewport(new QGLWidget(QGLFormat(QGL::StencilBuffer | QGL::AlphaChannel)));
}
Corona::~Corona()
{
delete d;
}
QRectF Corona::maxSizeHint() const
{
//FIXME: this is a bit of a naive implementation, do you think? =)
// we should factor in how much space we actually have left!
return sceneRect();
}
void Corona::setAppletMimeType(const QString& type)
{
d->mimetype = type;
}
QString Corona::appletMimeType()
{
return d->mimetype;
}
void Corona::saveApplets(const QString &config) const
{
KConfig cg(config);
foreach (const QString& group, cg.groupList()) {
cg.deleteGroup(group);
}
QStringList containmentIds;
foreach (const Containment *containment, d->containments) {
QString cid = QString::number(containment->id());
KConfigGroup containmentConfig(&cg, cid.append("-containment"));
containment->saveConstraints(&containmentConfig);
containment->save(&containmentConfig);
foreach (const Applet* applet, containment->applets()) {
KConfigGroup appletConfig(&cg, QString::number(applet->id()).append("-applet"));
applet->save(&appletConfig);
}
}
}
void Corona::saveApplets() const
{
saveApplets("plasma-appletsrc");
}
void Corona::loadApplets(const QString& configname)
{
clearApplets();
KConfig config(configname, KConfig::SimpleConfig);
QList<KConfigGroup> applets;
QHash<int, Containment*> containments;
foreach (const QString& group, config.groupList()) {
KConfigGroup appletConfig(&config, group);
if (group.contains("containment")) {
int cid = group.left(group.indexOf('-')).toUInt();
Containment *c = addContainment(appletConfig.readEntry("plugin", QString()), QVariantList(),
cid, true);
if (c) {
containments.insert(c->id(), c);
c->initConstraints(&appletConfig);
//kDebug() << "Containment" << c->id() << "geometry is" << c->geometry();
}
} else {
// it's an applet, let's grab the containment association
//kDebug() << "insert multi" << group;
applets.append(appletConfig);
}
}
//int maxContainment = containments.size();
//kDebug() << "number of applets?" << applets.count();
foreach (KConfigGroup cg, applets) {
int cid = cg.readEntry("containment", 0);
//kDebug() << "trying to load applet " << cg.name() << " in containment " << cid;
Containment* c = containments.value(cid, 0);
if (!c) {
kDebug() << "couldn't find containment " << cid << ", skipping this applet";
continue;
}
//kDebug() << "creating applet " << cg.name() << "in containment" << cid << "at geometry" << cg.readEntry("geometry", QRectF());
int appId = cg.name().left(cg.name().indexOf('-')).toUInt();
c->addApplet(cg.readEntry("plugin", QString()), QVariantList(),
appId, cg.readEntry("geometry", QRectF()), true);
}
foreach (Containment* c, containments) {
QString cid = QString::number(c->id());
KConfigGroup containmentConfig(&config, cid.append("-containment"));
c->setImmutable(containmentConfig.isImmutable());
}
if (d->containments.count() < 1) {
loadDefaultSetup();
} else {
foreach (Containment* containment, d->containments) {
containment->init();
addItem(containment);
foreach(Applet* applet, containment->applets()) {
applet->init();
}
}
}
foreach (Containment* containment, d->containments) {
// we need to manually flush the constraints changes
// because we may not get back to the event loop before
// view set up
containment->flushUpdatedConstraints();
}
setImmutable(config.isImmutable());
}
void Corona::loadApplets()
{
loadApplets("plasma-appletsrc");
}
void Corona::loadDefaultSetup()
{
//FIXME: implement support for system-wide defaults
QDesktopWidget desktop;
int numScreens = desktop.numScreens();
kDebug() << "number of screens is" << numScreens;
int topLeftScreen = 0;
QPoint topLeftCorner = desktop.screenGeometry(0).topLeft();
// create a containment for each screen
for (int i = 0; i < numScreens; ++i) {
QRect g = desktop.screenGeometry(i);
kDebug() << " screen " << i << "geometry is" << g;
Containment* c = addContainment("desktop");
c->setScreen(i);
c->setFormFactor(Plasma::Planar);
if (g.x() <= topLeftCorner.x() && g.y() >= topLeftCorner.y()) {
topLeftCorner = g.topLeft();
topLeftScreen = i;
}
}
// make a panel at the bottom
Containment* panel = addContainment("panel");
panel->setScreen(topLeftScreen);
panel->setLocation(Plasma::BottomEdge);
// some default applets to get a usable UI
panel->addApplet("launcher");
panel->addApplet("tasks");
panel->addApplet("systemtray");
panel->addApplet("digital-clock");
}
Containment* Corona::containmentForScreen(int screen) const
{
foreach (Containment* containment, d->containments) {
if (containment->screen() == screen &&
containment->type() == Containment::DesktopContainment) {
return containment;
}
}
return 0;
}
This breaks the existing Plasma applet API, see the contentSize() comments below. * New Flow Layout. This provides simple icon view-esque layout of items. Useful for icons for documents , applications or other tasks on the desktop for example. Supports non-equally sized items. Works well when used with the LayoutAnimator class to animate insertions and removals. * Re-wrote BoxLayout and removed old HBoxLayout,VBoxLayout classes which had a lot of code duplication. BoxLayout class now takes a direction argument in the constructor, ala. QBoxLayout. New BoxLayout class actually takes minimumSize() , maximumSize() of items into account. The Qt layout code for box and grid layouts is surprisingly sophisticated, so the results from BoxLayout probably will not be as good in certain situations but it should do for the panel. New BoxLayout also has support for LayoutAnimator * Fix Plasma::HBoxLayout and Plasma::VBoxLayout to use margin() rather than spacing() for the distance from the top and left margins respectively. * Fix Plasma::Applet::contentSize() to return the actual content size rather than a size hint. Added a new method contentSizeHint() which applets use to provide a hint about suitable content size. Existing implementations of contentSize() in applets need to be renamed to contentSizeHint(). The arguments and return type are the same as before. * Install the LayoutAnimator header so that applets can use it svn path=/trunk/KDE/kdebase/workspace/libs/plasma/; revision=707275
2007-09-01 14:34:22 +02:00
QList<Containment*> Corona::containments() const
{
return d->containments;
}
void Corona::clearApplets()
{
foreach (Containment* containment, d->containments) {
containment->clearApplets();
This breaks the existing Plasma applet API, see the contentSize() comments below. * New Flow Layout. This provides simple icon view-esque layout of items. Useful for icons for documents , applications or other tasks on the desktop for example. Supports non-equally sized items. Works well when used with the LayoutAnimator class to animate insertions and removals. * Re-wrote BoxLayout and removed old HBoxLayout,VBoxLayout classes which had a lot of code duplication. BoxLayout class now takes a direction argument in the constructor, ala. QBoxLayout. New BoxLayout class actually takes minimumSize() , maximumSize() of items into account. The Qt layout code for box and grid layouts is surprisingly sophisticated, so the results from BoxLayout probably will not be as good in certain situations but it should do for the panel. New BoxLayout also has support for LayoutAnimator * Fix Plasma::HBoxLayout and Plasma::VBoxLayout to use margin() rather than spacing() for the distance from the top and left margins respectively. * Fix Plasma::Applet::contentSize() to return the actual content size rather than a size hint. Added a new method contentSizeHint() which applets use to provide a hint about suitable content size. Existing implementations of contentSize() in applets need to be renamed to contentSizeHint(). The arguments and return type are the same as before. * Install the LayoutAnimator header so that applets can use it svn path=/trunk/KDE/kdebase/workspace/libs/plasma/; revision=707275
2007-09-01 14:34:22 +02:00
}
}
Containment* Corona::addContainment(const QString& name, const QVariantList& args, uint id, bool delayedInit)
{
QString pluginName = name;
Containment* containment = 0;
Applet* applet = 0;
This breaks the existing Plasma applet API, see the contentSize() comments below. * New Flow Layout. This provides simple icon view-esque layout of items. Useful for icons for documents , applications or other tasks on the desktop for example. Supports non-equally sized items. Works well when used with the LayoutAnimator class to animate insertions and removals. * Re-wrote BoxLayout and removed old HBoxLayout,VBoxLayout classes which had a lot of code duplication. BoxLayout class now takes a direction argument in the constructor, ala. QBoxLayout. New BoxLayout class actually takes minimumSize() , maximumSize() of items into account. The Qt layout code for box and grid layouts is surprisingly sophisticated, so the results from BoxLayout probably will not be as good in certain situations but it should do for the panel. New BoxLayout also has support for LayoutAnimator * Fix Plasma::HBoxLayout and Plasma::VBoxLayout to use margin() rather than spacing() for the distance from the top and left margins respectively. * Fix Plasma::Applet::contentSize() to return the actual content size rather than a size hint. Added a new method contentSizeHint() which applets use to provide a hint about suitable content size. Existing implementations of contentSize() in applets need to be renamed to contentSizeHint(). The arguments and return type are the same as before. * Install the LayoutAnimator header so that applets can use it svn path=/trunk/KDE/kdebase/workspace/libs/plasma/; revision=707275
2007-09-01 14:34:22 +02:00
//kDebug() << "Loading" << name << args << id;
if (pluginName.isEmpty()) {
// default to the desktop containment
pluginName = "desktop";
} else if (pluginName != "null") {
applet = Applet::loadApplet(pluginName, id, args);
containment = dynamic_cast<Containment*>(applet);
This breaks the existing Plasma applet API, see the contentSize() comments below. * New Flow Layout. This provides simple icon view-esque layout of items. Useful for icons for documents , applications or other tasks on the desktop for example. Supports non-equally sized items. Works well when used with the LayoutAnimator class to animate insertions and removals. * Re-wrote BoxLayout and removed old HBoxLayout,VBoxLayout classes which had a lot of code duplication. BoxLayout class now takes a direction argument in the constructor, ala. QBoxLayout. New BoxLayout class actually takes minimumSize() , maximumSize() of items into account. The Qt layout code for box and grid layouts is surprisingly sophisticated, so the results from BoxLayout probably will not be as good in certain situations but it should do for the panel. New BoxLayout also has support for LayoutAnimator * Fix Plasma::HBoxLayout and Plasma::VBoxLayout to use margin() rather than spacing() for the distance from the top and left margins respectively. * Fix Plasma::Applet::contentSize() to return the actual content size rather than a size hint. Added a new method contentSizeHint() which applets use to provide a hint about suitable content size. Existing implementations of contentSize() in applets need to be renamed to contentSizeHint(). The arguments and return type are the same as before. * Install the LayoutAnimator header so that applets can use it svn path=/trunk/KDE/kdebase/workspace/libs/plasma/; revision=707275
2007-09-01 14:34:22 +02:00
}
if (!containment) {
kDebug() << "loading of containment" << name << "failed.";
// in case we got a non-Containment from Applet::loadApplet or a null containment was requested
delete applet;
containment = new Containment;
// we want to provide something and don't care about the failure to launch
containment->setFailedToLaunch(false);
containment->setFormFactor(Plasma::Planar);
}
This breaks the existing Plasma applet API, see the contentSize() comments below. * New Flow Layout. This provides simple icon view-esque layout of items. Useful for icons for documents , applications or other tasks on the desktop for example. Supports non-equally sized items. Works well when used with the LayoutAnimator class to animate insertions and removals. * Re-wrote BoxLayout and removed old HBoxLayout,VBoxLayout classes which had a lot of code duplication. BoxLayout class now takes a direction argument in the constructor, ala. QBoxLayout. New BoxLayout class actually takes minimumSize() , maximumSize() of items into account. The Qt layout code for box and grid layouts is surprisingly sophisticated, so the results from BoxLayout probably will not be as good in certain situations but it should do for the panel. New BoxLayout also has support for LayoutAnimator * Fix Plasma::HBoxLayout and Plasma::VBoxLayout to use margin() rather than spacing() for the distance from the top and left margins respectively. * Fix Plasma::Applet::contentSize() to return the actual content size rather than a size hint. Added a new method contentSizeHint() which applets use to provide a hint about suitable content size. Existing implementations of contentSize() in applets need to be renamed to contentSizeHint(). The arguments and return type are the same as before. * Install the LayoutAnimator header so that applets can use it svn path=/trunk/KDE/kdebase/workspace/libs/plasma/; revision=707275
2007-09-01 14:34:22 +02:00
if (!delayedInit) {
containment->init();
addItem(containment);
}
d->containments.append(containment);
connect(containment, SIGNAL(destroyed(QObject*)),
this, SLOT(containmentDestroyed(QObject*)));
return containment;
}
Applet* Corona::addApplet(const QString& name, const QVariantList& args, uint id, const QRectF& geometry)
{
if (d->containments.size() < 1) {
kDebug() << "No containments to add an applet to!" << endl;
//FIXME create a containment if one doesn't exist ... ?
return 0;
}
return d->containments[0]->addApplet(name, args, id, geometry);
}
void Corona::dragEnterEvent( QGraphicsSceneDragDropEvent *event)
{
// kDebug() << "Corona::dragEnterEvent(QGraphicsSceneDragDropEvent* event)";
if (event->mimeData()->hasFormat(d->mimetype) ||
KUrl::List::canDecode(event->mimeData())) {
event->acceptProposedAction();
//TODO Create the applet, move to mouse position then send the
// following event to lock it to the mouse
//QMouseEvent event(QEvent::MouseButtonPress, event->pos(), Qt::LeftButton, event->mouseButtons(), 0);
//QApplication::sendEvent(this, &event);
}
event->accept();
//TODO Allow dragging an applet from another Corona into this one while
// keeping its settings etc.
}
void Corona::dragLeaveEvent(QGraphicsSceneDragDropEvent *event)
{
// kDebug() << "Corona::dragLeaveEvent(QGraphicsSceneDragDropEvent* event)";
//TODO If an established Applet is dragged out of the Corona, remove it and
// create a QDrag type thing to keep the Applet's settings
QGraphicsScene::dragLeaveEvent(event);
}
void Corona::dragMoveEvent(QGraphicsSceneDragDropEvent *event)
{
QGraphicsScene::dragMoveEvent(event);
event->accept();
//kDebug() << "Corona::dragMoveEvent(QDragMoveEvent* event)";
}
void Corona::containmentDestroyed(QObject* obj)
{
// we do a static_cast here since it really isn't an Containment by this
// point anymore since we are in the qobject dtor. we don't actually
// try and do anything with it, we just need the value of the pointer
// so this unsafe looking code is actually just fine.
Containment* containment = static_cast<Plasma::Containment*>(obj);
int index = d->containments.indexOf(containment);
if (index > -1) {
d->containments.removeAt(index);
}
}
bool Corona::isImmutable() const
{
return d->immutable;
}
void Corona::setImmutable(bool immutable)
{
if (d->immutable == immutable) {
return;
}
d->immutable = immutable;
foreach (QGraphicsItem* item, items()) {
item->setFlag(QGraphicsItem::ItemIsMovable, immutable);
}
}
} // namespace Plasma
#include "corona.moc"