plasma-framework/containment.cpp
Aaron J. Seigo e642050a1c * introduce a type() to containments so we can tell the difference between panels, desktops, etc more reliably
* translate panels to negative coordinates. this will allowus to make hiding panels that actually ... work =)

svn path=/trunk/KDE/kdebase/workspace/libs/plasma/; revision=723423
2007-10-09 16:33:52 +00:00

538 lines
16 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 "corona.h"
#include "karambamanager.h"
#include "phase.h"
#include "svg.h"
#include "widgets/freelayout.h"
#include "widgets/boxlayout.h"
namespace Plasma
{
class Containment::Private
{
public:
Private()
: formFactor(Planar),
location(Floating),
layout(0),
background(0),
bitmapBackground(0),
screen(0),
immutable(false)
{
}
~Private()
{
qDeleteAll(applets);
applets.clear();
delete layout;
delete bitmapBackground;
}
FormFactor formFactor;
Location location;
Layout* layout;
Applet::List applets;
Plasma::Svg *background;
QPixmap* bitmapBackground;
QString wallpaperPath;
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);
KConfigGroup config(KGlobal::config(), "General");
d->wallpaperPath = config.readEntry("wallpaper", QString());
//kDebug() << "wallpaperPath is" << d->wallpaperPath << QFile::exists(d->wallpaperPath);
if (d->wallpaperPath.isEmpty() ||
!QFile::exists(d->wallpaperPath)) {
//kDebug() << "SVG wallpaper!";
d->background = new Plasma::Svg("widgets/wallpaper", this);
}
setAcceptDrops(true);
if (type() == PanelContainment) {
kDebug() << "we are a panel, let's move ourselves to a negative coordinate system";
QDesktopWidget desktop;
QRect r = desktop.screenGeometry(screen());
translate(0, -r.height());
}
}
void Containment::initConstraints(KConfigGroup* group)
{
kDebug() << "initConstraints" << group->name() << type();
setScreen(group->readEntry("screen", 0));
setFormFactor((Plasma::FormFactor)group->readEntry("formfactor", (int)Plasma::Planar));
setLocation((Plasma::Location)group->readEntry("location", (int)Plasma::Desktop));
}
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;
}
void Containment::paintInterface(QPainter *painter,
const QStyleOptionGraphicsItem *option,
const QRect& contentsRect)
{
//TODO: we should have a way to do this outside of the paint event!
if (d->background) {
d->background->resize(contentsRect.size());
} else if (!d->wallpaperPath.isEmpty()) {
if (!d->bitmapBackground || !(d->bitmapBackground->size() == contentsRect.size())) {
delete d->bitmapBackground;
d->bitmapBackground = new QPixmap(d->wallpaperPath);
(*d->bitmapBackground) = d->bitmapBackground->scaled(contentsRect.size());
}
} else {
// got nothing to paint!
painter->drawRect(contentsRect);
return;
}
// draw the background untransformed (saves lots of per-pixel-math)
painter->save();
painter->resetTransform();
// blit the background (saves all the per-pixel-products that blending does)
painter->setCompositionMode(QPainter::CompositionMode_Source);
if (d->background) {
// Plasma::Svg doesn't support drawing only part of the image (it only
// supports drawing the whole image to a rect), so we blit to 0,0-w,h
d->background->paint(painter, 0, 0);
} else if (d->bitmapBackground) {
// for pixmaps we draw only the exposed part (untransformed since the
// bitmapBackground already has the size of the viewport)
painter->drawPixmap(option->exposedRect, *d->bitmapBackground, option->exposedRect);
}
// restore transformation and composition mode
painter->restore();
}
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();
/*
* example for displaying the SuperKaramba context menu
QGraphicsItem *item = itemAt(point);
if(item) {
QObject *object = dynamic_cast<QObject*>(item->parentItem());
if(object && object->objectName().startsWith("karamba")) {
QContextMenuEvent event(QContextMenuEvent::Mouse, point);
contextMenuEvent(&event);
return;
}
}
*/
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);
connect(closeApplet, SIGNAL(triggered(bool)),
applet, SLOT(destroy()));
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(point.toPoint());
}
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;
}
applet->setParentItem(this);
//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() - QPointF(applet->sizeHint().width()/2,
applet->sizeHint().height()/2),
applet->sizeHint()));
} else {
//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::addKaramba(const KUrl& path)
{
QGraphicsItemGroup* karamba = KarambaManager::loadKaramba(path, scene());
if (karamba) {
karamba->setParentItem(this);
Phase::self()->animateItem(karamba, Phase::Appear);
} else {
kDebug() << "Karamba " << path << " could not be loaded.";
}
}
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);
}
}
Applet::List Containment::applets() const
{
return d->applets;
}
void Containment::setScreen(int screen)
{
//kDebug() << "setting screen to" << screen;
QDesktopWidget desktop;
int numScreens = desktop.numScreens();
if (screen < -1 || screen > numScreens - 1) {
screen = -1;
}
if (screen > -1) {
setGeometry(desktop.screenGeometry(screen));
//kDebug() << "setting geometry to" << desktop.screenGeometry(screen);
}
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(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"