alecs/plasma-framework
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity
1cd27868ac
plasma-framework/applet.cpp
Marco Martin 5ddceb467b add Theme::currentThemeHasImage() that checks if the current theme has a 
certain svg or if it would fallback to the default theme if loaded.
this makes possible an alternative fallback mechanism between images of
the same theme, used now for the TransparentBackground background hint

svn path=/trunk/KDE/kdebase/workspace/libs/plasma/; revision=816734
2008-06-04 17:44:37 +00:00

1714 lines
52 KiB
C++
Raw Blame History

/*
* Copyright 2005 by Aaron Seigo <aseigo@kde.org>
* Copyright 2007 by Riccardo Iaconelli <riccardo@kde.org>
* Copyright 2008 by Ménard Alexis <darktears31@gmail.com>
*
* 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 "applet.h"
#include "applet_p.h"
#include <cmath>
#include <limits>
#include <QApplication>
#include <QEvent>
#include <QFile>
#include <QList>
#include <QPainter>
#include <QSize>
#include <QStyleOptionGraphicsItem>
#include <QTextDocument>
#include <QTimer>
#include <QUiLoader>
#include <QLabel>
#include <QGraphicsSceneMouseEvent>
#include <QGraphicsLinearLayout>
#include <QDesktopWidget>
#include <QGraphicsView>
#include <QAction>
#include <KAction>
#include <KIcon>
#include <KColorScheme>
#include <KConfigDialog>
#include <KDialog>
#include <KIconLoader>
#include <KPluginInfo>
#include <KStandardDirs>
#include <KService>
#include <KServiceTypeTrader>
#include <KShortcut>
#include <KWindowSystem>
#include <KActionCollection>
#include <Solid/PowerManagement>
#include "plasma/configxml.h"
#include "plasma/containment.h"
#include "plasma/containment_p.h"
#include "plasma/corona.h"
#include "plasma/dataenginemanager.h"
#include "plasma/package.h"
#include "plasma/packages_p.h"
#include "plasma/plasma.h"
#include "plasma/scripting/appletscript.h"
#include "plasma/shadowitem_p.h"
#include "plasma/svg.h"
#include "plasma/panelsvg.h"
#include "plasma/theme.h"
#include "plasma/view.h"
#include "plasma/widgets/label.h"
#include "plasma/widgets/pushbutton.h"
//#define DYNAMIC_SHADOWS
namespace Plasma
{
Applet::Applet(QGraphicsItem *parent,
const QString& serviceID,
uint appletId)
: QGraphicsWidget(parent),
d(new Private(KService::serviceByStorageId(serviceID), appletId, this))
{
// WARNING: do not access config() OR globalConfig() in this method!
// that requires a scene, which is not available at this point
d->init();
}
Applet::Applet(QObject* parentObject, const QVariantList& args)
: QGraphicsWidget(0),
d(new Private(KService::serviceByStorageId(args.count() > 0 ? args[0].toString() : QString()),
args.count() > 1 ? args[1].toInt() : 0, this))
{
// now remove those first two items since those are managed by Applet and subclasses shouldn't
// need to worry about them. yes, it violates the constness of this var, but it lets us add
// or remove items later while applets can just pretend that their args always start at 0
QVariantList &mutableArgs = const_cast<QVariantList&>(args);
if (!mutableArgs.isEmpty()) {
mutableArgs.removeFirst();
if (!mutableArgs.isEmpty()) {
mutableArgs.removeFirst();
}
}
setParent(parentObject);
// WARNING: do not access config() OR globalConfig() in this method!
// that requires a scene, which is not available at this point
d->init();
// the brain damage seen in the initialization list is due to the
// inflexibility of KService::createInstance
}
Applet::~Applet()
{
if (d->transient) {
d->resetConfigurationObject();
}
delete d;
}
PackageStructure::Ptr Applet::packageStructure()
{
if (!Private::packageStructure) {
Private::packageStructure = new PlasmoidPackage();
}
return Private::packageStructure;
}
void Applet::init()
{
if (d->script && !d->script->init()) {
setFailedToLaunch(true, i18n("Script initialization failed"));
}
//Here is the code for the window frame
//setWindowFlags(Qt::Window);
}
uint Applet::id() const
{
return d->appletId;
}
void Applet::save(KConfigGroup &group) const
{
// we call the dptr member directly for locked since isImmutable()
// also checks kiosk and parent containers
group.writeEntry("immutability", (int)d->immutability);
group.writeEntry("plugin", pluginName());
//FIXME: for containments, we need to have some special values here w/regards to
// screen affinity (e.g. "bottom of screen 0")
//kDebug() << pluginName() << "geometry is" << geometry() << "pos is" << pos() << "bounding rect is" << boundingRect();
group.writeEntry("geometry", geometry());
group.writeEntry("zvalue", zValue());
if (transform() == QTransform()) {
group.deleteEntry("transform");
} else {
QList<qreal> m;
QTransform t = transform();
m << t.m11() << t.m12() << t.m13() << t.m21() << t.m22() << t.m23() << t.m31() << t.m32() << t.m33();
group.writeEntry("transform", m);
//group.writeEntry("transform", transformToString(transform()));
}
KConfigGroup appletConfigGroup(&group, "Configuration");
//FIXME: we need a global save state too
saveState(appletConfigGroup);
if (d->activationAction) {
KConfigGroup shortcutConfig(&group, "Shortcuts");
shortcutConfig.writeEntry("global", d->activationAction->globalShortcut().toString());
}
}
void Applet::restore(KConfigGroup &group)
{
QList<qreal> m = group.readEntry("transform", QList<qreal>());
if (m.count() == 9) {
QTransform t(m[0], m[1], m[2], m[3], m[4], m[5], m[6], m[7], m[8]);
setTransform(t);
}
qreal z = group.readEntry("zvalue", 0);
if (z >= Private::s_maxZValue) {
Private::s_maxZValue = z;
}
if (z > 0) {
setZValue(z);
}
setImmutability((ImmutabilityType)group.readEntry("immutability", (int)Mutable));
QRectF geom = group.readEntry("geometry", QRectF());
if (geom.isValid()) {
setGeometry(geom);
}
KConfigGroup shortcutConfig(&group, "Shortcuts");
QString shortcutText = shortcutConfig.readEntry("global", QString());
if (!shortcutText.isEmpty()) {
setGlobalShortcut(KShortcut(shortcutText));
}
// local shortcut, if any
//TODO: implement; the shortcut will need to be registered with the containment
/*
shortcutText = shortcutConfig.readEntry("local", QString());
if (!shortcutText.isEmpty()) {
//TODO: implement; the shortcut
}
*/
}
void Applet::Private::setFocus()
{
kDebug() << "setting focus";
q->setFocus(Qt::ShortcutFocusReason);
}
void Applet::setFailedToLaunch(bool failed, const QString& reason)
{
if (d->failed == failed) {
return;
}
d->failed = failed;
prepareGeometryChange();
qDeleteAll(QGraphicsItem::children());
setLayout(0);
if (failed) {
setBackgroundHints(d->backgroundHints|StandardBackground);
QGraphicsLinearLayout *failureLayout = new QGraphicsLinearLayout();
failureLayout->setContentsMargins(0, 0, 0, 0);
Label *failureWidget = new Plasma::Label(this);
failureWidget->setText(d->visibleFailureText(reason));
QLabel *label = failureWidget->nativeWidget();
label->setWordWrap(true);
failureLayout->addItem(failureWidget);
setLayout(failureLayout);
resize(300,250);
setMinimumSize(failureWidget->size());
//resize(label->size());
d->background->resizePanel(geometry().size());
}
update();
}
void Applet::saveState(KConfigGroup &group) const
{
if (group.config()->name() != config().config()->name()) {
// we're being saved to a different file!
// let's just copy the current values in our configuration over
KConfigGroup c = config();
c.copyTo(&group);
}
}
KConfigGroup Applet::config(const QString &group) const
{
KConfigGroup cg = config();
return KConfigGroup(&cg, group);
}
KConfigGroup Applet::config() const
{
if (d->isContainment) {
return *(d->mainConfigGroup());
}
return KConfigGroup(d->mainConfigGroup(), "Configuration");
}
KConfigGroup Applet::globalConfig() const
{
KConfigGroup globalAppletConfig;
const Containment *c = containment();
QString group = isContainment() ? "ContainmentGlobals" : "AppletGlobals";
if (c && c->corona()) {
KSharedConfig::Ptr coronaConfig = c->corona()->config();
globalAppletConfig = KConfigGroup(coronaConfig, group);
} else {
globalAppletConfig = KConfigGroup(KGlobal::config(), group);
}
return KConfigGroup(&globalAppletConfig, d->globalName());
}
void Applet::destroy()
{
if (d->transient) {
return; //don't double delete
}
d->transient = true;
connect(Animator::self(), SIGNAL(animationFinished(QGraphicsItem*,Plasma::Animator::Animation)),
this, SLOT(appletAnimationComplete(QGraphicsItem*,Plasma::Animator::Animation)));
Animator::self()->animateItem(this, Animator::DisappearAnimation);
}
void Applet::Private::appletAnimationComplete(QGraphicsItem *item, Plasma::Animator::Animation anim)
{
if (anim != Animator::DisappearAnimation || item != q) {
return; //it's not our time yet
}
//kDebug() << "???????????????? DESTROYING APPLET" << name() << " ???????????????????????????";
QGraphicsWidget *parent = dynamic_cast<QGraphicsWidget *>(q->parentItem());
//it probably won't matter, but right now if there are applethandles, *they* are the parent.
//not the containment.
//is the applet in a containment and is the containment have a layout? if yes, we remove the applet in the layout
if (parent && parent->layout()) {
QGraphicsLayout *l = parent->layout();
for (int i = 0; i < l->count(); ++i) {
if (q == l->itemAt(i)) {
l->removeAt(i);
break;
}
}
}
if (configXml) {
configXml->setDefaults();
}
q->scene()->removeItem(q);
q->deleteLater();
}
ConfigXml* Applet::configScheme() const
{
return d->configXml;
}
DataEngine* Applet::dataEngine(const QString& name) const
{
int index = d->loadedEngines.indexOf(name);
if (index != -1) {
return DataEngineManager::self()->engine(name);
}
DataEngine* engine = DataEngineManager::self()->loadEngine(name);
if (engine->isValid()) {
d->loadedEngines.append(name);
}
return engine;
}
const Package* Applet::package() const
{
return d->package;
}
QGraphicsView *Applet::view() const
{
// It's assumed that we won't be visible on more than one view here.
// Anything that actually needs view() should only really care about
// one of them anyway though.
if (!scene()) {
return 0;
}
foreach (QGraphicsView *view, scene()->views()) {
if (view->sceneRect().intersects(sceneBoundingRect()) ||
view->sceneRect().contains(scenePos())) {
return view;
}
}
return 0;
}
QRectF Applet::mapFromView(const QGraphicsView *view, const QRect &rect) const
{
return mapFromScene(view->mapToScene(rect)).boundingRect();
}
QRect Applet::mapToView(const QGraphicsView *view, const QRectF &rect) const
{
return view->mapFromScene(mapToScene(rect)).boundingRect();
}
QPoint Applet::popupPosition(const QSize &s) const
{
QGraphicsView *v = view();
Q_ASSERT(v);
QPoint pos = v->mapFromScene(scenePos());
pos = v->mapToGlobal(pos);
kDebug() << "==> position is" << scenePos() << v->mapFromScene(scenePos()) << pos;
Plasma::View *pv = dynamic_cast<Plasma::View *>(v);
Plasma::Location loc = Floating;
if (pv) {
loc = pv->containment()->location();
}
switch (loc) {
case BottomEdge:
pos = QPoint(pos.x(), pos.y() - s.height());
break;
case TopEdge:
pos = QPoint(pos.x(), pos.y() + (int)size().height());
break;
case LeftEdge:
pos = QPoint(pos.x() + (int)size().width(), pos.y());
break;
case RightEdge:
pos = QPoint(pos.x() - s.width(), pos.y());
break;
default:
if (pos.y() - s.height() > 0) {
pos = QPoint(pos.x(), pos.y() - s.height());
} else {
pos = QPoint(pos.x(), pos.y() + (int)size().height());
}
}
//are we out of screen?
QRect screenRect = QApplication::desktop()->screenGeometry(pv ? 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 Applet::updateConstraints(Plasma::Constraints constraints)
{
d->scheduleConstraintsUpdate(constraints);
}
void Applet::constraintsEvent(Plasma::Constraints constraints)
{
//NOTE: do NOT put any code in here that reacts to constraints updates
// as it will not get called for any applet that reimplements constraintsEvent
// without calling the Applet:: version as well, which it shouldn't need to.
// INSTEAD put such code into flushPendingConstraintsEvents
Q_UNUSED(constraints)
//kDebug() << constraints << "constraints are FormFactor: " << formFactor() << ", Location: " << location();
if (d->script) {
d->script->constraintsEvent(constraints);
}
}
QString Applet::name() const
{
if (!d->appletDescription.isValid()) {
return i18n("Unknown Applet");
}
return d->appletDescription.name();
}
QFont Applet::font() const
{
return QApplication::font();
}
QString Applet::icon() const
{
if (!d->appletDescription.isValid()) {
return QString();
}
return d->appletDescription.icon();
}
QString Applet::pluginName() const
{
if (!d->appletDescription.isValid()) {
return QString();
}
return d->appletDescription.pluginName();
}
bool Applet::shouldConserveResources() const
{
return Solid::PowerManagement::appShouldConserveResources();
}
QString Applet::category() const
{
if (!d->appletDescription.isValid()) {
return i18n("Miscellaneous");
}
return d->appletDescription.category();
}
QString Applet::category(const KPluginInfo& applet)
{
return applet.property("X-KDE-PluginInfo-Category").toString();
}
QString Applet::category(const QString& appletName)
{
if (appletName.isEmpty()) {
return QString();
}
QString constraint = QString("[X-KDE-PluginInfo-Name] == '%1'").arg(appletName);
KService::List offers = KServiceTypeTrader::self()->query("Plasma/Applet", constraint);
if (offers.isEmpty()) {
return QString();
}
return offers.first()->property("X-KDE-PluginInfo-Category").toString();
}
ImmutabilityType Applet::immutability() const
{
//Returning the more strict immutability between the applet immutability and Corona one
ImmutabilityType coronaImmutability = Mutable;
if (dynamic_cast<Corona*>(scene())) {
coronaImmutability = static_cast<Corona*>(scene())->immutability();
}
if (coronaImmutability == SystemImmutable) {
return SystemImmutable;
} else if (coronaImmutability == UserImmutable && d->immutability != SystemImmutable) {
return UserImmutable;
} else {
return d->immutability;
}
}
void Applet::setImmutability(const ImmutabilityType immutable)
{
if (d->immutability == immutable) {
return;
}
d->immutability = immutable;
updateConstraints(ImmutableConstraint);
}
Applet::BackgroundHints Applet::backgroundHints() const
{
return d->backgroundHints;
}
void Applet::setBackgroundHints(const BackgroundHints hints)
{
d->backgroundHints = hints;
//Draw the standard background?
if ((hints & StandardBackground) || (hints & TranslucentBackground)) {
if (!d->background) {
d->background = new Plasma::PanelSvg();
}
if ((hints & TranslucentBackground) && Plasma::Theme::defaultTheme()->currentThemeHasImage("widgets/translucentbackground")) {
d->background->setImagePath("widgets/translucentbackground");
} else {
d->background->setImagePath("widgets/background");
}
d->background->setEnabledBorders(Plasma::PanelSvg::AllBorders);
qreal left, top, right, bottom;
d->background->getMargins(left, top, right, bottom);
setContentsMargins(left, right, top, bottom);
QSizeF fitSize(left + right, top + bottom);
if (minimumSize().expandedTo(fitSize) != minimumSize()) {
setMinimumSize(minimumSize().expandedTo(fitSize));
}
d->background->resizePanel(boundingRect().size());
} else if (d->background) {
qreal left, top, right, bottom;
d->background->getMargins(left, top, right, bottom);
//Setting a minimum size of 0,0 would result in the panel to be only
//on the first virtual desktop
setMinimumSize(qMax(minimumSize().width() - left - right, 1.0),
qMax(minimumSize().height() - top - bottom, 1.0));
delete d->background;
d->background = 0;
setContentsMargins(0, 0, 0, 0);
}
//Draw the shadow?
//There are various problems with shadows right now:
//
//1) shadows can be seen through translucent areas, which is probably technically correct ubt
//looks odd
//2) the shape of the item odesn't conform to the shape of the standard background, e.g. with
//rounded corners
#ifdef DYNAMIC_SHADOWS
if (hints & ShadowedBackground) {
if (d->shadow) {
d->shadow->setVisible(true);
} else {
d->shadow = new ShadowItem(this);
if (scene()) {
scene()->addItem(d->shadow);
d->shadow->show();
}
}
} else {
delete d->shadow;
d->shadow = 0;
}
#endif
}
bool Applet::hasFailedToLaunch() const
{
return d->failed;
}
void Applet::paintWindowFrame(QPainter * painter, const QStyleOptionGraphicsItem * option, QWidget * widget)
{
//Here come the code for the window frame
//kDebug()<<"ENTER in windowFrame";
//painter->drawRoundedRect(windowFrameGeometry(),5,5);
}
bool Applet::configurationRequired() const
{
return d->needsConfigOverlay != 0;
}
void Applet::setConfigurationRequired(bool needsConfig)
{
if ((d->needsConfigOverlay != 0) == needsConfig) {
return;
}
if (d->needsConfigOverlay) {
delete d->needsConfigOverlay;
d->needsConfigOverlay = 0;
return;
}
d->needsConfigOverlay = new AppletOverlayWidget(this);
d->needsConfigOverlay->resize(contentsRect().size());
int zValue = 100;
foreach (QGraphicsItem *child, QGraphicsItem::children()) {
if (child->zValue() > zValue) {
zValue = child->zValue() + 1;
}
}
d->needsConfigOverlay->setZValue(zValue);
qDeleteAll(d->needsConfigOverlay->QGraphicsItem::children());
QGraphicsLinearLayout *configLayout = new QGraphicsLinearLayout(this);
configLayout->setContentsMargins(0, 0, 0, 0);
PushButton *configWidget = new PushButton(this);
configWidget->setText(i18n("Configure..."));
connect(configWidget, SIGNAL(clicked()), this, SLOT(showConfigurationInterface()));
configLayout->addItem(configWidget);
setLayout(configLayout);
d->needsConfigOverlay->show();
}
void Applet::flushPendingConstraintsEvents()
{
if (d->pendingConstraints == NoConstraint) {
return;
}
if (d->constraintsTimerId) {
killTimer(d->constraintsTimerId);
d->constraintsTimerId = 0;
}
//kDebug() << "fushing constraints: " << d->pendingConstraints << "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!";
Plasma::Constraints c = d->pendingConstraints;
d->pendingConstraints = NoConstraint;
if (c & Plasma::StartupCompletedConstraint) {
//common actions
bool unlocked = immutability() == Mutable;
//FIXME desktop containments can't be removed while in use.
//it's kinda silly to have a keyboard shortcut for something that can only be used when the
//shortcut isn't active.
QAction* closeApplet = new QAction(i18n("Remove this %1", name()), this);
closeApplet->setIcon(KIcon("edit-delete"));
closeApplet->setEnabled(unlocked);
closeApplet->setVisible(unlocked);
closeApplet->setShortcutContext(Qt::WidgetWithChildrenShortcut); //don't clash with other views
if (! isContainment()) {
closeApplet->setShortcut(QKeySequence("ctrl+r"));
} else {
closeApplet->setShortcut(QKeySequence("ctrl+shift+r"));
}
connect(closeApplet, SIGNAL(triggered(bool)), this, SLOT(destroy()));
d->actions.addAction("remove", closeApplet);
}
if (c & Plasma::ImmutableConstraint) {
bool unlocked = immutability() == Mutable;
QAction *action = d->actions.action("remove");
if (action) {
action->setVisible(unlocked);
action->setEnabled(unlocked);
}
}
if (c & Plasma::SizeConstraint && d->needsConfigOverlay) {
d->needsConfigOverlay->setGeometry(QRectF(QPointF(0, 0), contentsRect().size()));
QGraphicsItem *button = 0;
QList<QGraphicsItem*> children = d->needsConfigOverlay->QGraphicsItem::children();
if (!children.isEmpty()) {
button = children.first();
}
if (button) {
QSizeF s = button->boundingRect().size();
button->setPos(d->needsConfigOverlay->boundingRect().width() / 2 - s.width() / 2,
d->needsConfigOverlay->boundingRect().height() / 2 - s.height() / 2);
}
}
if (c & Plasma::FormFactorConstraint) {
FormFactor f = formFactor();
//FIXME: this is a bit of a mess: calling setBackgroundHints twice,
// and moving an item to a non-vert/horiz containment that
// normally doesn't request a background would then get one!
if (f == Planar) {
setBackgroundHints(d->backgroundHints|ShadowedBackground);
} else if (d->backgroundHints&ShadowedBackground) {
setBackgroundHints(d->backgroundHints^ShadowedBackground);
}
if (!isContainment() && f != Vertical && f != Horizontal) {
setBackgroundHints(d->backgroundHints|StandardBackground);
} else if(d->backgroundHints&StandardBackground) {
setBackgroundHints(d->backgroundHints^StandardBackground);
} else if(d->backgroundHints&TranslucentBackground) {
setBackgroundHints(d->backgroundHints^TranslucentBackground);
}
}
//enforce square size in panels
if (aspectRatioMode() == Plasma::Square && (c & Plasma::SizeConstraint || c & Plasma::FormFactorConstraint) &&
size().height() != size().width()) {
if (formFactor() == Horizontal) {
setSizePolicy(QSizePolicy(QSizePolicy::Maximum,QSizePolicy::Expanding));
resize(QSizeF(size().height(), size().height()));
//FIXME: it shouldn't be used maximum and minimum sizes, layouts are weird
setMaximumWidth(size().height());
setMinimumWidth(size().height());
} else if (formFactor() == Vertical) {
setSizePolicy(QSizePolicy(QSizePolicy::Expanding,QSizePolicy::Fixed));
resize(QSizeF(size().width(), size().width()));
setMaximumHeight(size().width());
setMinimumHeight(size().width());
}
//if we are on desktop again restore maximum size
} else if (aspectRatioMode() == Plasma::Square && (c & Plasma::FormFactorConstraint) && formFactor() != Horizontal && formFactor() != Vertical) {
setMaximumSize(QWIDGETSIZE_MAX, QWIDGETSIZE_MAX);
setMinimumSize(0, 0);
}
Containment* containment = qobject_cast<Plasma::Containment*>(this);
if (isContainment() && containment) {
containment->d->containmentConstraintsEvent(c);
}
constraintsEvent(c);
if (layout()) {
layout()->updateGeometry();
}
}
int Applet::type() const
{
return Type;
}
QList<QAction*> Applet::contextualActions()
{
//kDebug() << "empty context actions";
return d->script ? d->script->contextualActions() : QList<QAction*>();
}
QAction* Applet::action(QString name) const
{
return d->actions.action(name);
}
void Applet::addAction(QString name, QAction *action)
{
d->actions.addAction(name, action);
}
void Applet::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
{
QPainter *p;
//FIXME: we should probably set the pixmap to screenSize(), but that breaks stuff atm.
QPixmap pixmap(boundingRect().size().toSize());
QGraphicsView* qgv = qobject_cast<QGraphicsView*>(widget->parent());
bool ghost = (qgv && (qgv == d->ghostView));
if (ghost) {
// The applet has to be displayed semi transparent. Create a pixmap and a painter on
// that pixmap where the applet can draw on so we can draw the result transparently
// at the end.
kDebug() << "Painting ghosted...";
pixmap.fill(Qt::transparent);
p = new QPainter();
p->begin(&pixmap);
} else {
p = painter;
}
if (d->shadow && d->shadow->shadowedSize() != boundingRect().size()) {
//kDebug() << "sizes are " << d->shadow->shadowedSize() << boundingRect().size();
d->shadow->generate();
}
p->save();
if (transform().isRotating()) {
p->setRenderHint(QPainter::SmoothPixmapTransform);
p->setRenderHint(QPainter::Antialiasing);
}
if (d->background &&
formFactor() != Plasma::Vertical &&
formFactor() != Plasma::Horizontal) {
//kDebug() << "option rect is" << option->rect;
d->background->paintPanel(p, option->rect, QPointF(0,0));
}
if (!d->failed) {
qreal left, top, right, bottom;
getContentsMargins(&left, &top, &right, &bottom);
const QRect contentsRect = QRectF(QPointF(0,0), boundingRect().size())
.adjusted(left, top, -right, -bottom).toAlignedRect();
if (widget && isContainment()) {
// note that the widget we get is actually the viewport of the view, not the view itself
View* v = qobject_cast<Plasma::View*>(widget->parent());
if (!v || v->isWallpaperEnabled()) {
Containment::StyleOption coption(*option);
coption.view = v;
paintInterface(p, &coption, contentsRect);
}
p->restore();
return;
}
//kDebug() << "paint interface of" << (QObject*) this;
paintInterface(p, option, contentsRect);
}
p->restore();
if (ghost) {
// Lets display the pixmap that we've just drawn... transparently.
p->setCompositionMode(QPainter::CompositionMode_DestinationIn);
p->fillRect(pixmap.rect(), QColor(0, 0, 0, (0.3 * 255)));
p->end();
delete p;
painter->drawPixmap(0, 0, pixmap);
}
}
void Applet::paintInterface(QPainter *painter, const QStyleOptionGraphicsItem *option,
const QRect & contentsRect)
{
if (d->script) {
d->script->paintInterface(painter, option, contentsRect);
} else {
//kDebug() << "Applet::paintInterface() default impl";
}
}
FormFactor Applet::formFactor() const
{
Containment* c = containment();
return c ? c->d->formFactor : Plasma::Planar;
}
Containment* Applet::containment() const
{
if (isContainment()) {
Containment *c = dynamic_cast<Containment*>(const_cast<Applet*>(this));
if (c) {
return c;
}
}
QGraphicsItem *parent = parentItem();
Containment *c = 0;
while (parent) {
Containment *possibleC = dynamic_cast<Containment*>(parent);
if (possibleC && possibleC->isContainment()) {
c = possibleC;
break;
}
parent = parent->parentItem();
}
return c;
}
void Applet::setGlobalShortcut(const KShortcut &shortcut)
{
if (!d->activationAction) {
d->activationAction = new KAction(this);
//TODO: add better text when we aren't in a string freeze
d->activationAction->setText(name());
d->activationAction->setObjectName(QString("Activate %1 Widget").arg(name())); // NO I18N
connect(d->activationAction, SIGNAL(triggered()), this, SIGNAL(activate()));
connect(this, SIGNAL(activate()), this, SLOT(setFocus()));
QList<QWidget *> widgets = d->actions.associatedWidgets();
foreach (QWidget *w, widgets) {
w->addAction(d->activationAction);
}
}
d->activationAction->setGlobalShortcut(shortcut);
}
KShortcut Applet::globalShortcut() const
{
if (d->activationAction) {
return d->activationAction->globalShortcut();
}
return KShortcut();
}
void Applet::addAssociatedWidget(QWidget *widget)
{
d->actions.addAssociatedWidget(widget);
}
void Applet::removeAssociatedWidget(QWidget *widget)
{
d->actions.removeAssociatedWidget(widget);
}
Location Applet::location() const
{
Containment* c = containment();
return c ? c->d->location : Plasma::Desktop;
}
Plasma::AspectRatioMode Applet::aspectRatioMode() const
{
return d->aspectRatioMode;
}
void Applet::setAspectRatioMode(Plasma::AspectRatioMode mode)
{
d->aspectRatioMode = mode;
}
void Applet::registerAsDragHandle( QGraphicsItem * item )
{
if (!item) {
return;
}
int index = d->registeredAsDragHandle.indexOf(item);
if (index == -1) {
d->registeredAsDragHandle.append(item);
item->installSceneEventFilter(this);
}
}
void Applet::unregisterAsDragHandle(QGraphicsItem *item)
{
if (!item) {
return;
}
int index = d->registeredAsDragHandle.indexOf(item);
if (index != -1) {
d->registeredAsDragHandle.removeAt(index);
item->removeSceneEventFilter(this);
}
}
bool Applet::isRegisteredAsDragHandle( QGraphicsItem * item )
{
return (d->registeredAsDragHandle.indexOf(item) != -1);
}
bool Applet::hasConfigurationInterface() const
{
return d->hasConfigurationInterface;
}
void Applet::setHasConfigurationInterface(bool hasInterface)
{
if (d->hasConfigurationInterface == hasInterface) {
return;
}
d->hasConfigurationInterface = hasInterface;
//config action
//TODO respect security when it's implemented (4.2)
QAction *configAction = d->actions.action("configure");
if (hasInterface) {
if (! configAction) { //should be always true
configAction = new QAction(i18n("%1 Settings", name()), this);
configAction->setIcon(KIcon("configure"));
configAction->setShortcutContext(Qt::WidgetWithChildrenShortcut); //don't clash with other views
if (isContainment()) {
//kDebug() << "I am a containment";
configAction->setShortcut(QKeySequence("ctrl+shift+s"));
} else {
configAction->setShortcut(QKeySequence("ctrl+s"));
}
//TODO how can we handle configuration of the shortcut in a way that spans all applets?
connect(configAction, SIGNAL(triggered(bool)),
this, SLOT(showConfigurationInterface()));
d->actions.addAction("configure", configAction);
}
} else {
d->actions.removeAction(configAction);
}
}
bool Applet::eventFilter( QObject *o, QEvent * e )
{
return QObject::eventFilter(o, e);
}
bool Applet::sceneEventFilter( QGraphicsItem * watched, QEvent * event )
{
switch (event->type()) {
case QEvent::GraphicsSceneMouseMove: {
//don't move when the containment is not mutable, in the rare case the containment doesn't exists consider it as mutable
if ((!containment() || containment()->immutability() == Mutable) && d->registeredAsDragHandle.contains( watched )) {
mouseMoveEvent(static_cast<QGraphicsSceneMouseEvent*>(event));
return true;
}
break;
}
default:
break;
}
return QGraphicsItem::sceneEventFilter(watched, event);
}
void Applet::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
{
if (d->immutability == Mutable && formFactor() == Plasma::Planar) {
QGraphicsItem *parent = parentItem();
Plasma::Applet *applet = qgraphicsitem_cast<Plasma::Applet*>(parent);
if (applet && applet->isContainment()) {
// our direct parent is a containment. just move ourselves.
QPointF curPos = event->pos();
QPointF lastPos = event->lastPos();
QPointF delta = curPos-lastPos;
moveBy(delta.x(),delta.y());
} else if (parent) {
//don't move the icon as well because our parent (usually an appletHandle) will do it for us
//parent->moveBy(delta.x(),delta.y());
QPointF curPos = parent->transform().map(event->pos());
QPointF lastPos = parent->transform().map(event->lastPos());
QPointF delta = curPos-lastPos;
parent->setPos(parent->pos() + delta);
}
}
}
void Applet::mousePressEvent(QGraphicsSceneMouseEvent *event)
{
setFocus(Qt::MouseFocusReason);
QGraphicsWidget::mousePressEvent(event);
}
void Applet::focusInEvent(QFocusEvent * event)
{
if (containment()) {
containment()->d->focusApplet(this);
//XXX if we are a containment we'll attempt to focus ourself
//which should be harmless
//focusing an applet may trigger this event again, but we won't be here more than twice
}
QGraphicsWidget::focusInEvent(event);
}
void Applet::resizeEvent(QGraphicsSceneResizeEvent *event)
{
QGraphicsWidget::resizeEvent(event);
if (d->background) {
d->background->resizePanel(boundingRect().size());
}
updateConstraints(Plasma::SizeConstraint);
}
void Applet::showConfigurationInterface()
{
if (!hasConfigurationInterface()) {
return;
}
const QString dialogId = QString("%1settings%2").arg(id()).arg(name());
KConfigDialog * dlg = KConfigDialog::exists(dialogId);
if (dlg) {
KWindowSystem::setOnDesktop(dlg->winId(), KWindowSystem::currentDesktop());
dlg->show();
KWindowSystem::activateWindow(dlg->winId());
return;
}
const QString windowTitle = i18nc("@title:window", "%1 Settings", name());
if (d->package && d->configXml) {
QString uiFile = d->package->filePath("mainconfigui");
if (uiFile.isEmpty()) {
return;
}
KConfigDialog *dialog = new KConfigDialog(0, dialogId, d->configXml);
dialog->setWindowTitle(windowTitle);
dialog->setAttribute(Qt::WA_DeleteOnClose, true);
QUiLoader loader;
QFile f(uiFile);
if (!f.open(QIODevice::ReadOnly)) {
delete dialog;
if (d->script) {
d->script->showConfigurationInterface();
}
return;
}
QWidget *w = loader.load(&f);
f.close();
dialog->addPage(w, i18n("Settings"), icon(), i18n("%1 Settings", name()));
dialog->show();
} else if (d->script) {
d->script->showConfigurationInterface();
} else {
KConfigSkeleton *nullManager = new KConfigSkeleton(0);
KConfigDialog *dialog = new KConfigDialog(0, dialogId, nullManager);
dialog->setFaceType(KPageDialog::Auto);
dialog->setWindowTitle(windowTitle);
dialog->setAttribute(Qt::WA_DeleteOnClose, true);
createConfigurationInterface(dialog);
//TODO: would be nice to not show dialog if there are no pages added?
connect(dialog, SIGNAL(finished()), nullManager, SLOT(deleteLater()));
//TODO: Apply button does not correctly work for now, so do not show it
dialog->showButton( KDialog::Apply, false );
dialog->show();
}
emit releaseVisualFocus();
}
void Applet::createConfigurationInterface(KConfigDialog *parent)
{
Q_UNUSED(parent)
// virtual method reimplemented by subclasses.
// do not put anything here ...
}
KPluginInfo::List Applet::listAppletInfo(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/Applet", constraint);
//kDebug() << "Applet::listAppletInfo constraint was '" << constraint << "' which got us " << offers.count() << " matches";
return KPluginInfo::fromServices(offers);
}
KPluginInfo::List Applet::listAppletInfoForMimetype(const QString &mimetype)
{
QString constraint = QString("'%1' in [X-Plasma-DropMimeTypes]").arg(mimetype);
//kDebug() << "listAppletInfoForMimetype with" << mimetype << constraint;
KService::List offers = KServiceTypeTrader::self()->query("Plasma/Applet", constraint);
return KPluginInfo::fromServices(offers);
}
QStringList Applet::listCategories(const QString &parentApp, bool visibleOnly)
{
QString constraint = "exist [X-KDE-PluginInfo-Category]";
if (parentApp.isEmpty()) {
constraint.append(" and not exist [X-KDE-ParentApp]");
} else {
constraint.append(" and [X-KDE-ParentApp] == '").append(parentApp).append("'");
}
KService::List offers = KServiceTypeTrader::self()->query("Plasma/Applet", constraint);
QStringList categories;
foreach (const KService::Ptr &applet, offers) {
QString appletCategory = applet->property("X-KDE-PluginInfo-Category").toString();
if (visibleOnly && applet->noDisplay()) {
// we don't want to show the hidden category
continue;
}
//kDebug() << " and we have " << appletCategory;
if (appletCategory.isEmpty()) {
if (!categories.contains(i18n("Miscellaneous"))) {
categories << i18n("Miscellaneous");
}
} else if (!categories.contains(appletCategory)) {
categories << appletCategory;
}
}
categories.sort();
return categories;
}
Applet* Applet::load(const QString& appletName, uint appletId, const QVariantList& args)
{
if (appletName.isEmpty()) {
return 0;
}
QString constraint = QString("[X-KDE-PluginInfo-Name] == '%1'").arg(appletName);
KService::List offers = KServiceTypeTrader::self()->query("Plasma/Applet", constraint);
bool isContainment = false;
if (offers.isEmpty()) {
//TODO: what would be -really- cool is offer to try and download the applet
// from the network at this point
offers = KServiceTypeTrader::self()->query("Plasma/Containment", constraint);
isContainment = true;
if (offers.isEmpty()) {
kDebug() << "offers is empty for " << appletName;
return 0;
}
} /* else if (offers.count() > 1) {
kDebug() << "hey! we got more than one! let's blindly take the first one";
} */
KService::Ptr offer = offers.first();
if (appletId == 0) {
appletId = ++Private::s_maxAppletId;
}
if (!offer->property("X-Plasma-API").toString().isEmpty()) {
kDebug() << "we have a script using the" << offer->property("X-Plasma-API").toString() << "API";
if (isContainment) {
return new Containment(0, offer->storageId(), appletId);
}
return new Applet(0, offer->storageId(), appletId);
}
QVariantList allArgs;
allArgs << offer->storageId() << appletId << args;
QString error;
Applet* applet = offer->createInstance<Plasma::Applet>(0, allArgs, &error);
if (!applet) {
kDebug() << "Couldn't load applet \"" << appletName << "\"! reason given: " << error;
}
return applet;
}
Applet* Applet::load(const KPluginInfo& info, uint appletId, const QVariantList& args)
{
if (!info.isValid()) {
return 0;
}
return load(info.pluginName(), appletId, args);
}
QVariant Applet::itemChange(GraphicsItemChange change, const QVariant &value)
{
//kDebug() << change;
switch (change) {
case ItemPositionChange:
if (d->shadow) {
d->shadow->adjustPosition();
}
break;
case ItemSceneHasChanged: {
QGraphicsScene *newScene = qvariant_cast<QGraphicsScene*>(value);
if (newScene) {
d->checkImmutability();
}
if (d->shadow) {
if (d->shadow->scene()) {
d->shadow->scene()->removeItem(d->shadow);
}
if (newScene) {
newScene->addItem(d->shadow);
d->shadow->generate();
d->shadow->adjustPosition();
d->shadow->show();
}
}
}
break;
case ItemVisibleChange:
if (d->shadow) {
d->shadow->setVisible(isVisible());
}
break;
case ItemPositionHasChanged:
emit geometryChanged();
break;
default:
break;
};
return QGraphicsWidget::itemChange(change, value);
}
QSizeF Applet::sizeHint(Qt::SizeHint which, const QSizeF & constraint) const
{
QSizeF hint = QGraphicsWidget::sizeHint(which, constraint);
if (d->aspectRatioMode == Plasma::Square) {
if (formFactor() == Horizontal) {
hint.setWidth(hint.height());
} else {
hint.setHeight(hint.width());
}
}
return hint;
}
void Applet::timerEvent(QTimerEvent *event)
{
if (event->timerId() == d->constraintsTimerId) {
killTimer(d->constraintsTimerId);
d->constraintsTimerId = 0;
flushPendingConstraintsEvents();
}
}
QRect Applet::screenRect() const
{
QPointF bottomRight = pos();
bottomRight.setX(bottomRight.x() + size().width());
bottomRight.setY(bottomRight.y() + size().height());
Containment *c;
c = containment();
if (c) {
QGraphicsView *v;
v = c->view();
if (v) {
QPoint tL = v->mapToGlobal(v->mapFromScene(pos()));
QPoint bR = v->mapToGlobal(v->mapFromScene(bottomRight));
kDebug() << "screenRect = " << QPoint(tL.x(), tL.y()), QSize(bR.x() - tL.x(), bR.y() - tL.y());
return QRect(QPoint(tL.x(), tL.y()), QSize(bR.x() - tL.x(), bR.y() - tL.y()));
}
}
//The applet isn't in any containment, or in a containment that doesn't have a view on it.
//So a screenRect isn't relevant.
return QRect(QPoint(0, 0), QSize(0, 0));
}
void Applet::raise()
{
setZValue(++Private::s_maxZValue);
}
void Applet::lower()
{
setZValue(--Private::s_minZValue);
}
void Applet::setIsContainment(bool isContainment)
{
if (d->isContainment == isContainment) {
return;
}
d->isContainment = isContainment;
Containment *c = qobject_cast<Containment*>(this);
if (c) {
// set up the toolbox
c->setContainmentType(c->containmentType());
}
}
bool Applet::isContainment() const
{
return d->isContainment;
}
// PRIVATE CLASS IMPLEMENTATION
Applet::Private::Private(KService::Ptr service, int uniqueID, Applet *applet)
: appletId(uniqueID),
q(applet),
backgroundHints(StandardBackground),
appletDescription(service),
package(0),
needsConfigOverlay(0),
background(0),
script(0),
configXml(0),
shadow(0),
mainConfig(0),
pendingConstraints(NoConstraint),
aspectRatioMode(Plasma::KeepAspectRatio),
ghostView(0),
immutability(Mutable),
actions(applet),
activationAction(0),
constraintsTimerId(0),
hasConfigurationInterface(false),
failed(false),
isContainment(false),
transient(false)
{
if (appletId == 0) {
appletId = ++s_maxAppletId;
} else if (appletId > s_maxAppletId) {
s_maxAppletId = appletId;
}
}
Applet::Private::~Private()
{
foreach ( const QString& engine, loadedEngines ) {
DataEngineManager::self()->unloadEngine( engine );
}
delete background;
delete package;
delete configXml;
delete shadow;
delete mainConfig;
}
void Applet::Private::init()
{
// WARNING: do not access config() OR globalConfig() in this method!
// that requires a scene, which is not available at this point
q->setAcceptsHoverEvents(true);
q->setFlag(QGraphicsItem::ItemIsFocusable, true);
if (!appletDescription.isValid()) {
kDebug() << "Check your constructor! You probaly want to be passing a Service::Ptr or a QVariantList with a valid storageid as arg[0] in.";
return;
}
QString api = appletDescription.property("X-Plasma-API").toString();
// we have a scripted plasmoid
if (!api.isEmpty()) {
// find where the Package is
QString path = KStandardDirs::locate("data",
"plasma/plasmoids/" + appletDescription.pluginName() +
"/");
if (path.isEmpty()) {
q->setFailedToLaunch(true, i18n("Could not locate the %1 package required for the %2 widget.",
appletDescription.pluginName(), appletDescription.name()));
} else {
// create the package and see if we have something real
//kDebug() << "trying for" << path;
PackageStructure::Ptr structure = Plasma::packageStructure(api, Plasma::AppletComponent);
structure->setPath(path);
package = new Package(path, structure);
if (package->isValid()) {
// now we try and set up the script engine.
// it will be parented to this applet and so will get
// deleted when the applet does
script = Plasma::loadScriptEngine(api, q);
if (!script) {
delete package;
package = 0;
q->setFailedToLaunch(true, i18n("Could not create a %1 ScriptEngine for the %2 widget.",
api, appletDescription.name()));
}
} else {
q->setFailedToLaunch(true, i18n("Could not open the %1 package required for the %2 widget.",
appletDescription.pluginName(), appletDescription.name()));
delete package;
package = 0;
}
if (package) {
setupScriptSupport();
}
}
}
q->setBackgroundHints(DefaultBackground);
connect(Plasma::Theme::defaultTheme(), SIGNAL(themeChanged()), q, SLOT(themeChanged()));
}
// put all setup routines for script here. at this point we can assume that
// package exists and that we have a script engin
void Applet::Private::setupScriptSupport()
{
Q_ASSERT(package);
QString xmlPath = package->filePath("mainconfigxml");
if (!xmlPath.isEmpty()) {
QFile file(xmlPath);
// FIXME: KConfigSkeleton doesn't play well with KConfigGroup =/
KConfigGroup config = q->config();
configXml = new ConfigXml(&config, &file);
}
if (!package->filePath("mainconfigui").isEmpty()) {
q->setHasConfigurationInterface(true);
}
}
QString Applet::Private::globalName() const
{
if (!appletDescription.isValid()) {
return QString();
}
return appletDescription.service()->library();
}
QString Applet::Private::instanceName()
{
if (!appletDescription.isValid()) {
return QString();
}
return appletDescription.service()->library() + QString::number(appletId);
}
void Applet::Private::scheduleConstraintsUpdate(Plasma::Constraints c)
{
if (!constraintsTimerId) {
constraintsTimerId = q->startTimer(0);
}
pendingConstraints |= c;
}
KConfigGroup* Applet::Private::mainConfigGroup()
{
if (mainConfig) {
return mainConfig;
}
if (isContainment) {
const Containment *asContainment = qobject_cast<Containment*>(const_cast<Applet*>(q));
Q_ASSERT(asContainment);
KConfigGroup containmentConfig;
//kDebug() << "got a corona, baby?" << (QObject*)asContainment->corona();
if (asContainment->corona()) {
containmentConfig = KConfigGroup(asContainment->corona()->config(), "Containments");
} else {
containmentConfig = KConfigGroup(KGlobal::config(), "Containments");
}
mainConfig = new KConfigGroup(&containmentConfig, QString::number(appletId));
} else {
KConfigGroup appletConfig;
if (q->containment()) {
appletConfig = q->containment()->config();
appletConfig = KConfigGroup(&appletConfig, "Applets");
} else {
kWarning() << "requesting config for" << q->name() << "without a containment!";
appletConfig = KConfigGroup(KGlobal::config(), "Applets");
}
mainConfig = new KConfigGroup(&appletConfig, QString::number(appletId));
}
return mainConfig;
}
QString Applet::Private::visibleFailureText(const QString& reason)
{
QString text;
if (reason.isEmpty()) {
text = i18n("This object could not be created.");
} else {
text = i18n("This object could not be created for the following reason:<p><b>%1</b></p>", reason);
}
return text;
}
void Applet::Private::checkImmutability()
{
const bool systemImmutable = q->globalConfig().isImmutable() || q->config().isImmutable() ||
((!isContainment && q->containment()) &&
q->containment()->immutability() == SystemImmutable) ||
(dynamic_cast<Corona*>(q->scene()) && static_cast<Corona*>(q->scene())->immutability() == SystemImmutable);
if (systemImmutable) {
q->updateConstraints(ImmutableConstraint);
}
}
void Applet::Private::themeChanged()
{
if (background) {
//do again the translucent background fallback
q->setBackgroundHints(backgroundHints);
qreal left;
qreal right;
qreal top;
qreal bottom;
background->getMargins(left, top, right, bottom);
q->setContentsMargins(left, right, top, bottom);
}
q->update();
}
void Applet::Private::resetConfigurationObject()
{
mainConfigGroup()->deleteGroup();
delete mainConfig;
mainConfig = 0;
}
uint Applet::Private::s_maxAppletId = 0;
uint Applet::Private::s_maxZValue = 0;
uint Applet::Private::s_minZValue = 0;
PackageStructure::Ptr Applet::Private::packageStructure(0);
AppletOverlayWidget::AppletOverlayWidget(QGraphicsWidget *parent)
: QGraphicsWidget(parent)
{
resize(parent->size());
}
void AppletOverlayWidget::paint(QPainter *painter,
const QStyleOptionGraphicsItem *option,
QWidget *widget)
{
Q_UNUSED(option)
Q_UNUSED(widget)
painter->save();
painter->setRenderHint(QPainter::Antialiasing);
QColor wash = Plasma::Theme::defaultTheme()->color(Theme::BackgroundColor);
wash.setAlphaF(.6);
painter->fillPath(parentItem()->shape(), wash);
painter->restore();
}
} // Plasma namespace
#include "applet.moc"
Reference in New Issue View Git Blame Copy Permalink