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plasma-framework/applet.cpp
Marco Martin 0c283924be API reviews: 
killed drawStandardBackground() and shadowShown()
now the two properties are merged in backgroundHints() and
setBackgroundHints() using the combination of BackgroundHints flags

svn path=/trunk/KDE/kdebase/workspace/libs/plasma/; revision=801282
2008-04-26 09:13:57 +00:00

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/*
* 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 <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 <QPushButton>
#include <QGraphicsSceneMouseEvent>
#include <QGraphicsLinearLayout>
#include <QDesktopWidget>
#include <QGraphicsView>
#include <QGraphicsProxyWidget>
#include <KIcon>
#include <KColorScheme>
#include <KConfigDialog>
#include <KDialog>
#include <KIconLoader>
#include <KPluginInfo>
#include <KStandardDirs>
#include <KService>
#include <KServiceTypeTrader>
#include <KWindowSystem>
#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"
//#define DYNAMIC_SHADOWS
namespace Plasma
{
class OverlayWidget : public QGraphicsWidget
{
public:
OverlayWidget(QGraphicsWidget *parent)
: QGraphicsWidget(parent)
{
resize(parent->size());
}
protected:
void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget = 0)
{
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();
}
};
class Applet::Private
{
public:
Private(KService::Ptr service, int uniqueID)
: appletId(uniqueID),
backgroundHints(StandardBackground),
appletDescription(service),
package(0),
needsConfigOverlay(0),
background(0),
script(0),
configXml(0),
shadow(0),
cachedBackground(0),
mainConfig(0),
pendingConstraints(NoConstraint),
aspectRatioMode(Qt::KeepAspectRatio),
immutability(NotImmutable),
hasConfigurationInterface(false),
failed(false),
isContainment(false),
square(false),
transient(false)
{
if (appletId == 0) {
appletId = ++s_maxAppletId;
} else if (appletId > s_maxAppletId) {
s_maxAppletId = appletId;
}
}
~Private()
{
foreach ( const QString& engine, loadedEngines ) {
DataEngineManager::self()->unloadEngine( engine );
}
delete background;
delete package;
delete configXml;
delete shadow;
delete cachedBackground;
delete mainConfig;
}
void init(Applet* applet)
{
// WARNING: do not access config() OR globalConfig() in this method!
// that requires a scene, which is not available at this point
applet->setAcceptsHoverEvents(true);
applet->setFlag(QGraphicsItem::ItemIsFocusable, true);
if (!appletDescription.isValid()) {
applet->setFailedToLaunch(true, i18n("Invalid applet description"));
return;
}
QString language = appletDescription.property("X-Plasma-Language").toString();
// we have a scripted plasmoid
if (!language.isEmpty()) {
// find where the Package is
QString path = KStandardDirs::locate("data",
"plasma/plasmoids/" + appletDescription.pluginName() +
"/");
if (path.isEmpty()) {
applet->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(language, 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(language, applet);
if (!script) {
delete package;
package = 0;
applet->setFailedToLaunch(true, i18n("Could not create a %1 ScriptEngine for the %2 widget.",
language, appletDescription.name()));
}
} else {
applet->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(applet);
}
}
}
applet->setBackgroundHints(DefaultBackground);
connect(Plasma::Theme::defaultTheme(), SIGNAL(themeChanged()), applet, 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 setupScriptSupport(Applet* applet)
{
Q_ASSERT(package);
QString xmlPath = package->filePath("mainconfigxml");
if (!xmlPath.isEmpty()) {
QFile file(xmlPath);
// FIXME: KConfigSkeleton doesn't play well with KConfigGroup =/
KConfigGroup config = applet->config();
configXml = new ConfigXml(&config, &file);
}
if (!package->filePath("mainconfigui").isEmpty()) {
applet->setHasConfigurationInterface(true);
}
}
QString instanceName()
{
if (!appletDescription.isValid()) {
return QString();
}
return appletDescription.service()->library() + QString::number(appletId);
}
void getBorderSize(int& left , int& top, int &right, int& bottom)
{
if (background) {
top = background->marginSize(Plasma::TopMargin);
left = background->marginSize(Plasma::LeftMargin);
right = background->marginSize(Plasma::RightMargin);
bottom = background->marginSize(Plasma::BottomMargin);
} else {
top = left = right = bottom = 0;
}
}
void scheduleConstraintsUpdate(Plasma::Constraints c, Applet* applet)
{
if (pendingConstraints == NoConstraint) {
QTimer::singleShot(0, applet, SLOT(flushUpdatedConstraints()));
}
pendingConstraints |= c;
}
KConfigGroup* mainConfigGroup(const Applet* q)
{
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;
}
void copyEntries(KConfigGroup *source, KConfigGroup *destination)
{
foreach (const QString &group, source->groupList()) {
KConfigGroup subSource(source, group);
KConfigGroup subDest(destination, group);
copyEntries(&subSource, &subDest);
}
QMap<QString, QString> entries = source->entryMap();
QMapIterator<QString, QString> it(entries);
while (it.hasNext()) {
it.next();
destination->writeEntry(it.key(), it.value());
}
}
QString 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 applyBackgroundHints(const BackgroundHints hints)
{
#if 0
backgroundHints = hints;
//Draw the standard background?
if (hints & StandardBackground) {
if (!background) {
background = new Plasma::PanelSvg();
background->setImagePath("widgets/background");
background->setEnabledBorders(Plasma::PanelSvg::AllBorders);
int left, top, right, bottom;
getBorderSize(left, top, right, bottom);
setContentsMargins(left, right, top, bottom);
QSizeF fitSize(left + right, top + bottom);
if (minimumSize().expandedTo(fitSize) != minimumSize()) {
setMinimumSize(minimumSize().expandedTo(fitSize));
}
background->resizePanel(boundingRect().size());
}
} else if (background) {
int left, top, right, bottom;
getBorderSize(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;
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 (shadow) {
shadow->setVisible(true);
} else {
shadow = new ShadowItem(this);
if (scene()) {
scene()->addItem(d->shadow);
shadow->show();
}
}
} else {
delete d->shadow;
shadow = 0;
}
#else
Q_UNUSED(shown);
#endif
#endif
}
//TODO: examine the usage of memory here; there's a pretty large
// number of members at this point.
static uint s_maxAppletId;
static uint s_maxZValue;
static uint s_minZValue;
static PackageStructure::Ptr packageStructure;
uint appletId;
BackgroundHints backgroundHints;
KPluginInfo appletDescription;
Package* package;
OverlayWidget *needsConfigOverlay;
QList<QObject*> watchedForFocus;
QList<QGraphicsItem*> watchedForMouseMove;
QStringList loadedEngines;
Plasma::PanelSvg *background;
//Plasma::LineEdit *failureText;
AppletScript *script;
ConfigXml* configXml;
ShadowItem* shadow;
QPixmap* cachedBackground;
KConfigGroup *mainConfig;
Plasma::Constraints pendingConstraints;
Qt::AspectRatioMode aspectRatioMode;
ImmutabilityType immutability;
bool hasConfigurationInterface : 1;
bool failed : 1;
bool isContainment : 1;
bool square : 1;
bool transient : 1;
};
uint Applet::Private::s_maxAppletId = 0;
uint Applet::Private::s_maxZValue = 0;
uint Applet::Private::s_minZValue = 0;
PackageStructure::Ptr Applet::Private::packageStructure(0);
Applet::Applet(QGraphicsItem *parent,
const QString& serviceID,
uint appletId)
: QGraphicsWidget(parent),
d(new Private(KService::serviceByStorageId(serviceID), appletId))
{
// WARNING: do not access config() OR globalConfig() in this method!
// that requires a scene, which is not available at this point
d->init(this);
}
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))
{
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(this);
// the brain damage seen in the initialization list is due to the
// inflexibility of KService::createInstance
}
Applet::~Applet()
{
needsFocus(false);
if (d->transient) {
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);
}
void Applet::restore(KConfigGroup *c)
{
QList<qreal> m = c->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 = c->readEntry("zvalue", 0);
if (z >= Private::s_maxZValue) {
Private::s_maxZValue = z;
}
setZValue(z);
setImmutability((ImmutabilityType)c->readEntry("immutability", (int)NotImmutable));
}
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);
#ifdef TOPORT
Layout* failureLayout = new BoxLayout(BoxLayout::TopToBottom, this);
d->failureText = new LineEdit(this);
d->failureText->setTextInteractionFlags( Qt::TextSelectableByMouse );
d->failureText->setStyled(false);
d->failureText->document()->setTextWidth(200);
d->failureText->setHtml(visibleFailureText(reason));
//FIXME: this needs to get the colour from the theme's colour scheme
d->failureText->setDefaultTextColor(KStatefulBrush(KColorScheme::Window,
KColorScheme::NormalText,
Theme::defaultTheme()->colors())
.brush(QPalette::Normal).color());
failureLayout->addItem(d->failureText);
#endif
QGraphicsLinearLayout *failureLayout = new QGraphicsLinearLayout();
failureLayout->setContentsMargins(0, 0, 0, 0);
QGraphicsProxyWidget * failureWidget = new QGraphicsProxyWidget(this);
QLabel * label = new QLabel(d->visibleFailureText(reason));
label->setWordWrap(true);
failureWidget->setWidget(label);
failureLayout->addItem(failureWidget);
setLayout(failureLayout);
}
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();
d->copyEntries(&c, 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(this));
}
return KConfigGroup(d->mainConfigGroup(this), "Configuration");
}
KConfigGroup Applet::globalConfig() const
{
KConfigGroup globalAppletConfig;
const Containment *c = isContainment() ? dynamic_cast<const Containment*>(this) : 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, globalName());
}
void Applet::destroy()
{
//kDebug() << "???????????????? DESTROYING APPLET" << name() << " ???????????????????????????";
if (d->configXml) {
d->configXml->setDefaults();
}
d->transient = true;
deleteLater();
}
void Applet::resetConfigurationObject()
{
d->mainConfigGroup(this)->deleteGroup();
delete d->mainConfig;
d->mainConfig = 0;
}
ConfigXml* Applet::configXml() 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
{
// TODO: Confirm that adjusted() is needed and is not covering for some
// issue elsewhere
return mapFromScene(view->mapToScene(rect)).boundingRect().adjusted(0, 0, 1, 1);
}
QRect Applet::mapToView(const QGraphicsView *view, const QRectF &rect) const
{
// TODO: Confirm that adjusted() is needed and is not covering for some
// issue elsewhere
return view->mapFromScene(mapToScene(rect)).boundingRect().adjusted(0, 0, -1, -1);
}
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, this);
}
void Applet::constraintsUpdated(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 constraintsUpdated
// without calling the Applet:: version as well, which it shouldn't need to.
// INSTEAD put such code into flushUpdatedConstraints
Q_UNUSED(constraints)
//kDebug() << constraints << "constraints are FormFactor: " << formFactor() << ", Location: " << location();
if (d->script) {
d->script->constraintsUpdated(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 = NotImmutable;
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) {
if (!d->background) {
d->background = new Plasma::PanelSvg();
d->background->setImagePath("widgets/background");
d->background->setEnabledBorders(Plasma::PanelSvg::AllBorders);
int left, top, right, bottom;
d->getBorderSize(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) {
int left, top, right, bottom;
d->getBorderSize(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 {
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::needsConfiguring() const
{
return d->needsConfigOverlay != 0;
}
void Applet::setNeedsConfiguring(bool needsConfig)
{
if ((d->needsConfigOverlay != 0) == needsConfig) {
return;
}
if (d->needsConfigOverlay) {
delete d->needsConfigOverlay;
d->needsConfigOverlay = 0;
return;
}
d->needsConfigOverlay = new OverlayWidget(this);
d->needsConfigOverlay->resize(boundingRect().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());
QPushButton* button = new QPushButton();
button->setText(i18n("Configure..."));
connect(button, SIGNAL(clicked()), this, SLOT(showConfigurationInterface()));
QGraphicsLinearLayout *configLayout = new QGraphicsLinearLayout(this);
configLayout->setContentsMargins(0, 0, 0, 0);
QGraphicsProxyWidget * configWidget = new QGraphicsProxyWidget(this);
configWidget->setWidget(button);
configLayout->addItem(configWidget);
setLayout(configLayout);
d->needsConfigOverlay->show();
}
void Applet::checkImmutability()
{
const bool systemImmutable = globalConfig().isImmutable() || config().isImmutable() ||
(containment() && containment()->immutability() == SystemImmutable) ||
(dynamic_cast<Corona*>(scene()) && static_cast<Corona*>(scene())->immutability() == SystemImmutable);
if (systemImmutable) {
updateConstraints(ImmutableConstraint);
}
}
void Applet::flushUpdatedConstraints()
{
if (d->pendingConstraints == NoConstraint) {
return;
}
//kDebug() << "fushing constraints: " << d->pendingConstraints << "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!";
Plasma::Constraints c = d->pendingConstraints;
d->pendingConstraints = NoConstraint;
if (c & Plasma::SizeConstraint && d->needsConfigOverlay) {
d->needsConfigOverlay->setGeometry(QRectF(QPointF(0, 0), boundingRect().size()));
// FIXME:: rather horrible hack to work around the fact we don't have spacers
// for layouts, and with WoC coming i'd rather not expend effort there
QGraphicsItem * button = d->needsConfigOverlay->QGraphicsItem::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();
if (f == Planar) {
setBackgroundHints(d->backgroundHints|ShadowedBackground);
} else {
setBackgroundHints(d->backgroundHints^ShadowedBackground);
}
if (!isContainment() && f != Vertical && f != Horizontal) {
setBackgroundHints(d->backgroundHints|StandardBackground);
} else {
setBackgroundHints(d->backgroundHints^StandardBackground);
}
/**
FIXME: what follows was an attempt to constrain the size of applets. it is, however,
broken for the following reasons:
* it constrains to the size of an icon, when clearly this is not valid for
any non-single-icon applet
* it is far too pessimistic for horizontal constraints
QSizeF newMax;
const QSizeF infSize(std::numeric_limits<qreal>::infinity(),
std::numeric_limits<qreal>::infinity());
if (f == Plasma::Vertical && !(expandingDirections() & Qt::Vertical)) {
newMax = QSizeF(maximumContentSize().width(), IconSize(KIconLoader::Panel));
} else if (f == Plasma::Horizontal && !(expandingDirections() & Qt::Horizontal)) {
newMax = QSizeF(IconSize(KIconLoader::Panel), maximumContentSize().height());
} else if (maximumContentSize() != infSize) {
newMax = infSize;
}
if (newMax.isValid()) {
setMaximumContentSize(newMax);
if (newMax.width() < contentSize().width() ||
newMax.height() < contentSize().height()) {
updateGeometry();
}
}
*/
}
Containment* containment = qobject_cast<Plasma::Containment*>(this);
if (isContainment() && containment) {
containment->d->containmentConstraintsUpdated(c);
}
constraintsUpdated(c);
if (layout()) {
layout()->updateGeometry();
}
}
int Applet::type() const
{
return Type;
}
QPainterPath Applet::shape() const
{
if (isContainment()) {
return QGraphicsWidget::shape();
}
return Plasma::roundedRectangle(boundingRect().adjusted(-2, -2, 2, 2), 10);
}
QList<QAction*> Applet::contextualActions()
{
//kDebug() << "empty context actions";
return d->script ? d->script->contextualActions() : QList<QAction*>();
}
QColor Applet::color() const
{
// TODO: add more colors for more categories and
// maybe read from config?
QString c = category();
int alpha = 200;
// Colors taken from Oxygen color palette
if (c == "Date and Time") {
return QColor(191, 94, 0, alpha);
} else if (c == "Environment & Weather") {
return QColor(191, 0, 0, alpha);
} else if (c == "Examples") {
return QColor(204, 0, 154, alpha);
} else if (c == "File System") {
return QColor(90, 0, 179, alpha);
} else if (c == "Graphics") {
return QColor(0, 0, 255, alpha);
} else if (c == "Language") {
return QColor(0, 191, 0, alpha);
} else if (c == "Mapping") {
return QColor(191, 245, 0, alpha);
} else if (c == "Online Services") {
return QColor(255, 213, 0, alpha);
} else if (c == "System Information") {
return QColor(0, 196, 204, alpha);
} else if (c == "Windows and Tasks") {
return QColor(255, 126, 0, alpha);
} else {
return QColor(136, 136, 136, alpha);
}
}
void Applet::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
{
if (d->shadow && d->shadow->shadowedSize() != boundingRect().size()) {
//kDebug() << "sizes are " << d->shadow->shadowedSize() << boundingRect().size();
d->shadow->generate();
}
painter->save();
if (transform().isRotating()) {
painter->setRenderHint(QPainter::SmoothPixmapTransform);
painter->setRenderHint(QPainter::Antialiasing);
}
if (d->background &&
formFactor() != Plasma::Vertical &&
formFactor() != Plasma::Horizontal) {
//kDebug() << "option rect is" << option->rect;
d->background->paintPanel(painter, option->rect, QPointF(0,0));
}
if (!d->failed) {
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(painter, &coption, QRect(QPoint(0,0), boundingRect().size().toSize()));
}
painter->restore();
return;
}
//kDebug() << "paint interface of" << (QObject*) this;
paintInterface(painter, option, QRect(QPoint(0,0), boundingRect().size().toSize()));
}
painter->restore();
}
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->formFactor() : Plasma::Planar;
}
Containment* Applet::containment() const
{
/*
* while this is probably "more correct", much of the code in applet assumes containment
* returns zero in the case that this is a containment itself.
* if (isContainment()) {
return dynamic_cast<Containment*>(const_cast<Applet*>(this));
}
*/
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;
}
Location Applet::location() const
{
Containment* c = containment();
if (!c) {
return Plasma::Desktop;
}
return c->location();
}
Qt::AspectRatioMode Applet::aspectRatioMode() const
{
return d->aspectRatioMode;
}
void Applet::setAspectRatioMode(Qt::AspectRatioMode mode)
{
d->aspectRatioMode = mode;
}
bool Applet::remainSquare() const
{
return d->square;
}
void Applet::setRemainSquare(bool square)
{
d->square = square;
}
QString Applet::globalName() const
{
if (!d->appletDescription.isValid()) {
return QString();
}
return d->appletDescription.service()->library();
}
QString Applet::instanceName() const
{
return d->instanceName();
}
void Applet::watchForFocus(QObject *widget, bool watch)
{
if (!widget) {
return;
}
int index = d->watchedForFocus.indexOf(widget);
if (watch) {
if (index == -1) {
d->watchedForFocus.append(widget);
widget->installEventFilter(this);
}
} else if (index != -1) {
d->watchedForFocus.removeAt(index);
widget->removeEventFilter(this);
}
}
void Applet::watchForMouseMove( QGraphicsItem * watched, bool watch )
{
if (!watched) {
return;
}
int index = d->watchedForMouseMove.indexOf(watched);
if (watch) {
if (index == -1) {
d->watchedForMouseMove.append(watched);
watched->installSceneEventFilter(this);
}
} else if (index != -1) {
d->watchedForMouseMove.removeAt(index);
watched->removeSceneEventFilter(this);
}
}
void Applet::needsFocus(bool focus)
{
if (focus == QGraphicsItem::hasFocus()) {
return;
}
emit requestFocus(focus);
}
bool Applet::hasConfigurationInterface() const
{
return d->hasConfigurationInterface;
}
void Applet::setHasConfigurationInterface(bool hasInterface)
{
d->hasConfigurationInterface = hasInterface;
}
bool Applet::eventFilter( QObject *o, QEvent * e )
{
if ( !d->watchedForFocus.contains( o ) )
{
if ( e->type() == QEvent::MouseButtonRelease ||
e->type() == QEvent::FocusIn ) {
needsFocus( true );
} else if ( e->type() == QEvent::FocusOut ) {
needsFocus( false );
}
}
return QObject::eventFilter(o, e);
}
bool Applet::sceneEventFilter( QGraphicsItem * watched, QEvent * event )
{
switch (event->type()) {
case QEvent::GraphicsSceneMouseMove: {
if (d->watchedForMouseMove.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 == NotImmutable && 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)
{
kDebug() << "FOCUS! FOCUS! FOCUS!";
QGraphicsWidget::focusInEvent(event);
}
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;
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()));
dialog->show();
dialog->enableButtonApply(true);
}
emit launchActivated();
}
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 MimeTypes").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-Language").toString().isEmpty()) {
kDebug() << "we have a script in the language of" << offer->property("X-Plasma-Language").toString();
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);
}
QPointF Applet::topLeft() const
{
return boundingRect().topLeft();
}
QVariant Applet::itemChange(GraphicsItemChange change, const QVariant &value)
{
switch (change) {
case ItemPositionChange:
if (d->shadow) {
d->shadow->adjustPosition();
}
break;
case ItemSceneHasChanged: {
QGraphicsScene *newScene = qvariant_cast<QGraphicsScene*>(value);
if (newScene) {
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;
default:
break;
};
return QGraphicsWidget::itemChange(change, value);
}
void Applet::setGeometry(const QRectF& geometry)
{
QRectF beforeGeom = QGraphicsWidget::geometry();
QGraphicsWidget::setGeometry(geometry);
if (geometry.size() != beforeGeom.size()) {
updateConstraints(Plasma::SizeConstraint);
if (d->background) {
d->background->resizePanel(boundingRect().size());
}
emit geometryChanged();
} else if (geometry.topLeft() != beforeGeom.topLeft()) {
/*if (d->background) {
kDebug() << QGraphicsWidget::geometry();
}*/
emit geometryChanged();
}
}
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;
}
void Applet::themeChanged()
{
update();
}
} // Plasma namespace
#include "applet.moc"
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