plasma-framework/containment.cpp
Aaron J. Seigo 99f67622e2 the last of the full screen repaints are gone, gone gone.
TT is aware of the bugs i'm working around, so hopefully we can get rid of this code someday, but for now ... a much more performant and smoother plasma.

svn path=/trunk/KDE/kdebase/workspace/libs/plasma/; revision=733167
2007-11-05 18:40:45 +00:00

547 lines
17 KiB
C++

/*
* 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)
{
setAcceptsHoverEvents(true);
}
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();
}
}
void Containment::hoverEnterEvent(QGraphicsSceneHoverEvent *event)
{
//FIXME Qt4.4 check to see if this is still necessary to avoid unecessary repaints
// check with QT_FLUSH_PAINT=1 and mouse through applets that accept hover,
// applets that don't and system windows
if (event->spontaneous()) {
Applet::hoverEnterEvent(event);
}
Q_UNUSED(event)
}
void Containment::hoverLeaveEvent(QGraphicsSceneHoverEvent *event)
{
//FIXME Qt4.4 check to see if this is still necessary to avoid unecessary repaints
// check with QT_FLUSH_PAINT=1 and mouse through applets that accept hover,
// applets that don't and system windows
// Applet::hoverLeaveEvent(event);
Q_UNUSED(event)
}
}
#include "containment.moc"