plasma-framework/containment.cpp

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/*
* Copyright 2007 by Aaron Seigo <aseigo@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 "containment.h"
#include <QAction>
#include <QDesktopWidget>
#include <QFile>
#include <QGraphicsSceneContextMenuEvent>
#include <QMimeData>
#include <QPainter>
#include <QStyleOptionGraphicsItem>
#include <KApplication>
#include <KAuthorized>
#include <KIcon>
#include <KMenu>
#include <KMimeType>
#include <KRun>
#include <KServiceTypeTrader>
#include <KStandardDirs>
#include "corona.h"
#include "phase.h"
#include "svg.h"
#include "widgets/freelayout.h"
#include "widgets/boxlayout.h"
namespace Plasma
{
static const int INTER_CONTAINMENT_MARGIN = 6;
class Containment::Private
{
public:
Private()
: formFactor(Planar),
location(Floating),
layout(0),
screen(0),
immutable(false)
{
}
~Private()
{
qDeleteAll(applets);
applets.clear();
delete layout;
}
FormFactor formFactor;
Location location;
Layout* layout;
Applet::List applets;
QSize size;
int screen;
bool immutable;
};
Containment::Containment(QGraphicsItem* parent,
const QString& serviceId,
uint containmentId)
: Applet(parent, serviceId, containmentId),
d(new Private)
{
}
Containment::Containment(QObject* parent, const QVariantList& args)
: Applet(parent, args),
d(new Private)
{
}
Containment::~Containment()
{
delete d;
}
void Containment::init()
{
setCachePaintMode(NoCacheMode);
setFlag(QGraphicsItem::ItemIsMovable, false);
setFlag(QGraphicsItem::ItemClipsChildrenToShape, false);
setAcceptDrops(true);
setDrawStandardBackground(false);
//TODO: would be nice to not do this on init, as it causes Phase to init
connect(Phase::self(), SIGNAL(animationComplete(QGraphicsItem*,Plasma::Phase::Animation)),
this, SLOT(appletDisappearComplete(QGraphicsItem*,Plasma::Phase::Animation)));
}
void Containment::initConstraints(KConfigGroup* group)
{
//kDebug() << "initConstraints" << group->name() << type();
setLocation((Plasma::Location)group->readEntry("location", (int)d->location));
setGeometry(group->readEntry("geometry", geometry()));
setFormFactor((Plasma::FormFactor)group->readEntry("formfactor", (int)d->formFactor));
setScreen(group->readEntry("screen", d->screen));
}
void Containment::saveConstraints(KConfigGroup* group) const
{
group->writeEntry("screen", d->screen);
group->writeEntry("formfactor", (int)d->formFactor);
group->writeEntry("location", (int)d->location);
}
Containment::Type Containment::type()
{
return DesktopContainment;
}
QSizeF Containment::contentSizeHint() const
{
return d->size;
}
void Containment::contextMenuEvent(QGraphicsSceneContextMenuEvent* event)
{
//kDebug() << "let's see if we manage to get a context menu here, huh";
if (!scene() || !KAuthorized::authorizeKAction("desktop_contextmenu")) {
QGraphicsItem::contextMenuEvent(event);
return;
}
QPointF point = event->scenePos();
QGraphicsItem* item = scene()->itemAt(point);
if (item == this) {
item = 0;
}
Applet* applet = 0;
while (item) {
applet = qgraphicsitem_cast<Applet*>(item);
if (applet) {
break;
}
item = item->parentItem();
}
KMenu desktopMenu;
//kDebug() << "context menu event " << immutable;
if (!applet) {
if (!scene() || static_cast<Corona*>(scene())->isImmutable()) {
QGraphicsItem::contextMenuEvent(event);
return;
}
//FIXME: change this to show this only in debug mode (or not at all?)
// before final release
QList<QAction*> actions = contextActions();
if (actions.count() < 1) {
QGraphicsItem::contextMenuEvent(event);
return;
}
foreach(QAction* action, actions) {
desktopMenu.addAction(action);
}
} else if (applet->isImmutable()) {
QGraphicsItem::contextMenuEvent(event);
return;
} else {
bool hasEntries = false;
if (applet->hasConfigurationInterface()) {
QAction* configureApplet = new QAction(i18n("%1 Settings...", applet->name()), &desktopMenu);
connect(configureApplet, SIGNAL(triggered(bool)),
applet, SLOT(showConfigurationInterface()));
desktopMenu.addAction(configureApplet);
hasEntries = true;
}
if (scene() && !static_cast<Corona*>(scene())->isImmutable()) {
QAction* closeApplet = new QAction(i18n("Remove this %1", applet->name()), &desktopMenu);
QVariant appletV;
appletV.setValue((QObject*)applet);
closeApplet->setData(appletV);
connect(closeApplet, SIGNAL(triggered(bool)),
this, SLOT(destroyApplet()));
desktopMenu.addAction(closeApplet);
hasEntries = true;
}
QList<QAction*> actions = applet->contextActions();
if (!actions.isEmpty()) {
desktopMenu.addSeparator();
foreach(QAction* action, actions) {
desktopMenu.addAction(action);
}
hasEntries = true;
}
if (!hasEntries) {
QGraphicsItem::contextMenuEvent(event);
return;
}
}
event->accept();
desktopMenu.exec(event->screenPos());
}
void Containment::setFormFactor(FormFactor formFactor)
{
if (d->formFactor == formFactor && d->layout) {
return;
}
//kDebug() << "switching FF to " << formFactor;
d->formFactor = formFactor;
delete d->layout;
d->layout = 0;
switch (d->formFactor) {
case Planar:
d->layout = new FreeLayout(this);
break;
case Horizontal:
d->layout = new BoxLayout(BoxLayout::LeftToRight, this);
d->layout->setMargin(0);
d->layout->setSpacing(0);
break;
case Vertical:
d->layout = new BoxLayout(BoxLayout::TopToBottom, this);
d->layout->setMargin(0);
d->layout->setSpacing(0);
break;
case MediaCenter:
//FIXME: need a layout type here!
break;
default:
kDebug() << "This can't be happening! Or... can it? ;)";
break;
}
foreach (Applet* applet, d->applets) {
d->layout->addItem(applet);
applet->updateConstraints(Plasma::FormFactorConstraint);
}
updateConstraints(Plasma::FormFactorConstraint);
}
FormFactor Containment::formFactor() const
{
return d->formFactor;
}
void Containment::setLocation(Location location)
{
if (d->location == location) {
return;
}
d->location = location;
foreach (Applet* applet, d->applets) {
applet->updateConstraints(Plasma::LocationConstraint);
}
updateConstraints(Plasma::LocationConstraint);
}
Location Containment::location() const
{
return d->location;
}
void Containment::clearApplets()
{
qDeleteAll(d->applets);
d->applets.clear();
}
Applet* Containment::addApplet(const QString& name, const QVariantList& args, uint id, const QRectF& geometry, bool delayInit)
{
Applet* applet = Applet::loadApplet(name, id, args);
if (!applet) {
kDebug() << "Applet" << name << "could not be loaded.";
applet = new Applet;
}
addChild(applet);
//panels don't want backgrounds, which is important when setting geometry
if (type() == PanelContainment) {
applet->setDrawStandardBackground(false);
}
//the applet needs to be given constraints before it can set its geometry
applet->updateConstraints(Plasma::AllConstraints);
//kDebug() << "adding applet" << applet->name() << "with a default geometry of" << geometry << geometry.isValid();
if (geometry.isValid()) {
applet->setGeometry(geometry);
} else if (geometry.x() != -1 && geometry.y() != -1) {
// yes, this means we can't have items start -1, -1
applet->setGeometry(QRectF(geometry.topLeft(),
applet->sizeHint()));
} else if (this->geometry().isValid()) {
//TODO: Make sure new applets don't overlap with existing ones
// Center exactly:
QSizeF size = applet->sizeHint();
qreal appletWidth = size.width();
qreal appletHeight = size.height();
qreal width = this->geometry().width();
qreal height = this->geometry().height();
//kDebug() << "measuring geometry with" << appletWidth << appletHeight << width << height;
applet->setGeometry(QRectF(QPointF((width / 2) - (appletWidth / 2), (height / 2) - (appletHeight / 2)), size));
}
if (d->layout) {
d->layout->addItem(applet);
}
kDebug() << applet->name() << "sizehint:" << applet->sizeHint()
<< "geometry:" << applet->geometry();
if (!delayInit) {
applet->init();
}
d->applets << applet;
connect(applet, SIGNAL(destroyed(QObject*)),
this, SLOT(appletDestroyed(QObject*)));
Phase::self()->animateItem(applet, Phase::Appear);
return applet;
}
void Containment::appletDestroyed(QObject* object)
{
// we do a static_cast here since it really isn't an Applet 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.
Applet* applet = static_cast<Plasma::Applet*>(object);
int index = d->applets.indexOf(applet);
if (index > -1) {
d->applets.removeAt(index);
}
}
void Containment::destroyApplet()
{
QAction *action = qobject_cast<QAction*>(sender());
if (!action) {
return;
}
Applet *applet = qobject_cast<Applet*>(action->data().value<QObject*>());
Phase::self()->animateItem(applet, Phase::Disappear);
}
void Containment::appletDisappearComplete(QGraphicsItem *item, Plasma::Phase::Animation anim)
{
if (anim == Phase::Disappear) {
if (item->parentItem() == this) {
Applet *applet = qgraphicsitem_cast<Applet*>(item);
if (applet) {
applet->destroy();
}
}
}
}
Applet::List Containment::applets() const
{
return d->applets;
}
void Containment::setScreen(int screen)
{
// screen of -1 means no associated screen.
//kDebug() << "setting screen to" << screen;
QDesktopWidget desktop;
int numScreens = desktop.numScreens();
if (screen < -1 || screen > numScreens - 1) {
screen = -1;
}
//kDebug() << "setting screen to " << screen << "and type is" << type();
if (screen > -1) {
QRect r = desktop.screenGeometry(screen);
if (type() == DesktopContainment) {
// we need to find how many screens are to our top and left
// to calculate the proper offsets for the margins.
int x = r.x();
int y = r.y();
int screensLeft = 0;
int screensAbove = 0;
for (int i = 0; i < numScreens; ++i) {
QRect otherScreen = desktop.screenGeometry(screen);
if (x > otherScreen.x()) {
++screensLeft;
}
if (y > otherScreen.y()) {
++screensAbove;
}
}
r.moveLeft(r.x() + INTER_CONTAINMENT_MARGIN * screensLeft);
r.moveTop(r.y() + INTER_CONTAINMENT_MARGIN * screensAbove);
setGeometry(r);
//kDebug() << "setting geometry to" << desktop.screenGeometry(screen) << r << geometry();
} else if (type() == PanelContainment) {
QDesktopWidget desktop;
QRect r = desktop.screenGeometry(screen);
//kDebug() << "we are a panel on" << r << ", let's move ourselves to a negative coordinate system" << -r.height() - INTER_CONTAINMENT_MARGIN;
//FIXME PANELS: multiple panel support means having to move the panels up
// this requires a proper panel manager, discuss in the panel
// irc meeting
translate(0, -r.height() - INTER_CONTAINMENT_MARGIN);
}
}
d->screen = screen;
updateConstraints(Plasma::ScreenConstraint);
}
int Containment::screen() const
{
return d->screen;
}
KPluginInfo::List Containment::knownContainments(const QString &category,
const QString &parentApp)
{
QString constraint;
if (parentApp.isEmpty()) {
constraint.append("not exist [X-KDE-ParentApp]");
} else {
constraint.append("[X-KDE-ParentApp] == '").append(parentApp).append("'");
}
if (!category.isEmpty()) {
if (!constraint.isEmpty()) {
constraint.append(" and ");
}
constraint.append("[X-KDE-PluginInfo-Category] == '").append(category).append("'");
if (category == "Miscellaneous") {
constraint.append(" or (not exist [X-KDE-PluginInfo-Category] or [X-KDE-PluginInfo-Category] == '')");
}
}
KService::List offers = KServiceTypeTrader::self()->query("Plasma/Containment", constraint);
//kDebug() << "constraint was" << constraint << "which got us" << offers.count() << "matches";
return KPluginInfo::fromServices(offers);
}
KPluginInfo::List Containment::knownContainmentsForMimetype(const QString &mimetype)
{
QString constraint = QString("'%1' in MimeTypes").arg(mimetype);
//kDebug() << "knownContainmentsForMimetype with" << mimetype << constraint;
KService::List offers = KServiceTypeTrader::self()->query("Plasma/Containment", constraint);
return KPluginInfo::fromServices(offers);
}
void Containment::dropEvent(QGraphicsSceneDragDropEvent *event)
{
//kDebug() << "drop event:" << event->mimeData()->text();
QString mimetype(static_cast<Corona*>(scene())->appletMimeType());
if (event->mimeData()->hasFormat(mimetype) && scene()) {
QString plasmoidName;
plasmoidName = event->mimeData()->data(mimetype);
QRectF geom(mapFromScene(event->scenePos()), QSize(0, 0));
addApplet(plasmoidName, QVariantList(), 0, geom);
event->acceptProposedAction();
} else if (KUrl::List::canDecode(event->mimeData())) {
KUrl::List urls = KUrl::List::fromMimeData(event->mimeData());
foreach (const KUrl& url, urls) {
KMimeType::Ptr mime = KMimeType::findByUrl(url);
QString mimeName = mime->name();
QRectF geom(event->scenePos(), QSize(0, 0));
QVariantList args;
args << url.url();
// kDebug() << mimeName;
KPluginInfo::List appletList = Applet::knownAppletsForMimetype(mimeName);
if (appletList.isEmpty()) {
// no special applet associated with this mimetype, let's
addApplet("url", args, 0, geom);
} else {
//TODO: should we show a dialog here to choose which plasmoid load if
//appletList.count() > 0?
addApplet(appletList.first().pluginName(), args, 0, geom);
}
}
event->acceptProposedAction();
}
}
}
#include "containment.moc"