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plasma-framework/applet.cpp
Riccardo Iaconelli e4665a938a Implement Applet::shouldConserveResources(), a method to help plasmoid developers to know whether they should conserve resources. 
Peer reviewed by Chani and Richmoore.

CCMAIL:aseigo@kde.org

svn path=/trunk/KDE/kdebase/workspace/libs/plasma/; revision=751216
2007-12-21 12:27:29 +00:00

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/*
* Copyright 2005 by Aaron Seigo <aseigo@kde.org>
* Copyright 2007 by Riccardo Iaconelli <riccardo@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 "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 <KIcon>
#include <KColorScheme>
#include <KConfigDialog>
#include <KDialog>
#include <KPluginInfo>
#include <KStandardDirs>
#include <KService>
#include <KServiceTypeTrader>
#include <KIconLoader>
#include <Solid/PowerManagement>
#include "plasma/configxml.h"
#include "plasma/containment.h"
#include "plasma/corona.h"
#include "plasma/dataenginemanager.h"
#include "plasma/package.h"
#include "plasma/packages_p.h"
#include "plasma/plasma.h"
#include "plasma/scriptengine.h"
#include "plasma/shadowitem_p.h"
#include "plasma/svg.h"
#include "plasma/theme.h"
#include "plasma/view.h"
#include "plasma/layouts/boxlayout.h"
#include "plasma/widgets/widget.h"
#include "plasma/widgets/lineedit.h"
#include "plasma/widgets/pushbutton.h"
//#define DYNAMIC_SHADOWS
namespace Plasma
{
class Applet::Private
{
public:
Private(KService::Ptr service, int uniqueID)
: appletId(uniqueID),
appletDescription(service),
package(0),
background(0),
failureText(0),
scriptEngine(0),
configXml(0),
shadow(0),
cachedBackground(0),
mainConfig(0),
pendingConstraints(NoConstraint),
kioskImmutable(false),
immutable(false),
hasConfigurationInterface(false),
failed(false),
needsConfig(false),
isContainment(false)
{
if (appletId == 0) {
appletId = nextId();
}
if (appletId > s_maxAppletId) {
s_maxAppletId = appletId;
}
}
~Private()
{
foreach ( const QString& engine, loadedEngines ) {
DataEngineManager::self()->unloadDataEngine( 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->setZValue(100);
if (!appletDescription.isValid()) {
applet->setFailedToLaunch(true);
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("appdata",
"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;
package = new Package(path, PlasmoidStructure());
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
scriptEngine = ScriptEngine::load(language, applet);
if (!scriptEngine) {
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->setDrawStandardBackground(true);
}
// 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);
}
}
void paintBackground(QPainter* p2, Applet* q, QRectF paintRect)
{
if (q->formFactor() != Plasma::Planar) {
// we don't paint special backgrounds for other form factors
// if that changes in the future, this method is where such
// background painting code should be added
return;
}
// TODO: caching these values might be an idea
const int topHeight = background->elementSize("top").height();
const int leftWidth = background->elementSize("left").width();
const int topOffset = 0 - topHeight;
const int leftOffset = 0 - leftWidth;
if (!cachedBackground || cachedBackground->size() != q->boundingRect().toRect().size()) {
QSize contents = contentSize(q).toSize();
const int contentWidth = contents.width();
const int contentHeight = contents.height();
background->resize();
const int topWidth = background->elementSize("top").width();
const int leftHeight = background->elementSize("left").height();
const int rightWidth = background->elementSize("right").width();
const int bottomHeight = background->elementSize("bottom").height();
// contents top-left corner is (0,0). We need to draw up and left of that
const int rightOffset = contentWidth;
const int bottomOffset = contentHeight;
const int contentTop = 0;
const int contentLeft = 0;
delete cachedBackground;
cachedBackground = new QPixmap(leftWidth + contentWidth + rightWidth, topHeight + contentHeight + bottomHeight);
cachedBackground->fill(Qt::transparent);
QPainter p(cachedBackground);
p.translate(leftWidth, topHeight);
p.setCompositionMode(QPainter::CompositionMode_Source);
p.setRenderHint(QPainter::SmoothPixmapTransform);
//FIXME: This is a hack to fix a drawing problems with svg files where a thin transparent border is drawn around the svg image.
// the transparent border around the svg seems to vary in size depending on the size of the svg and as a result increasing the
// svn image by 2 all around didn't resolve the issue. For now it resizes based on the border size.
background->resize(contentWidth, contentHeight);
background->paint(&p, QRect(contentLeft-leftWidth, contentTop-topHeight, contentWidth+leftWidth*2, contentHeight+topHeight*2), "center");
background->resize();
background->paint(&p, QRect(leftOffset, topOffset, leftWidth, topHeight), "topleft");
background->paint(&p, QRect(rightOffset, topOffset,rightWidth, topHeight), "topright");
background->paint(&p, QRect(leftOffset, bottomOffset, leftWidth, bottomHeight), "bottomleft");
background->paint(&p, QRect(rightOffset, bottomOffset, rightWidth, bottomHeight), "bottomright");
if (background->elementExists("hint-stretch-borders")) {
background->paint(&p, QRect(leftOffset, contentTop, leftWidth, contentHeight), "left");
background->paint(&p, QRect(rightOffset, contentTop, rightWidth, contentHeight), "right");
background->paint(&p, QRect(contentLeft, topOffset, contentWidth, topHeight), "top");
background->paint(&p, QRect(contentLeft, bottomOffset, contentWidth, bottomHeight), "bottom");
} else {
QPixmap left(leftWidth, leftHeight);
left.fill(Qt::transparent);
{
QPainter sidePainter(&left);
sidePainter.setCompositionMode(QPainter::CompositionMode_Source);
background->paint(&sidePainter, QPoint(0, 0), "left");
}
p.drawTiledPixmap(QRect(leftOffset, contentTop, leftWidth, contentHeight), left);
QPixmap right(rightWidth, leftHeight);
right.fill(Qt::transparent);
{
QPainter sidePainter(&right);
sidePainter.setCompositionMode(QPainter::CompositionMode_Source);
background->paint(&sidePainter, QPoint(0, 0), "right");
}
p.drawTiledPixmap(QRect(rightOffset, contentTop, rightWidth, contentHeight), right);
QPixmap top(topWidth, topHeight);
top.fill(Qt::transparent);
{
QPainter sidePainter(&top);
sidePainter.setCompositionMode(QPainter::CompositionMode_Source);
background->paint(&sidePainter, QPoint(0, 0), "top");
}
p.drawTiledPixmap(QRect(contentLeft, topOffset, contentWidth, topHeight), top);
QPixmap bottom(topWidth, bottomHeight);
bottom.fill(Qt::transparent);
{
QPainter sidePainter(&bottom);
sidePainter.setCompositionMode(QPainter::CompositionMode_Source);
background->paint(&sidePainter, QPoint(0, 0), "bottom");
}
p.drawTiledPixmap(QRect(contentLeft, bottomOffset, contentWidth, bottomHeight), bottom);
}
// re-enable this once Qt's svg rendering is un-buggered
//background->resize(contentWidth, contentHeight);
//background->paint(&p, QRect(contentLeft, contentTop, contentWidth, contentHeight), "center");
}
p2->drawPixmap(paintRect, *cachedBackground, paintRect.translated(-leftOffset,-topOffset));
}
QSizeF contentSize(const Applet* q)
{
if (failureText) {
return failureText->geometry().size();
}
return q->contentSize();
}
static uint nextId()
{
++s_maxAppletId;
return s_maxAppletId;
}
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->elementSize("top").height();
left = background->elementSize("left").width();
right = background->elementSize("right").width();
bottom = background->elementSize("bottom").height();
} 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;
}
//TODO: examine the usage of memory here; there's a pretty large
// number of members at this point.
uint appletId;
KPluginInfo appletDescription;
Package* package;
QList<QObject*> watchedForFocus;
QStringList loadedEngines;
static uint s_maxAppletId;
Plasma::Svg *background;
Plasma::LineEdit *failureText;
ScriptEngine* scriptEngine;
ConfigXml* configXml;
ShadowItem* shadow;
QPixmap* cachedBackground;
KConfigGroup *mainConfig;
Plasma::Constraints pendingConstraints;
bool kioskImmutable : 1;
bool immutable : 1;
bool hasConfigurationInterface : 1;
bool failed : 1;
bool needsConfig : 1;
bool isContainment : 1;
};
uint Applet::Private::s_maxAppletId = 0;
Applet::Applet(QGraphicsItem *parent,
const QString& serviceID,
uint appletId)
: Widget(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)
: Widget(0,parentObject),
d(new Private(KService::serviceByStorageId(args.count() > 0 ? args[0].toString() : QString()),
args.count() > 1 ? args[1].toInt() : 0))
{
// 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);
delete d;
}
void Applet::init()
{
}
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("locked", d->immutable);
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());
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");
saveState(&appletConfigGroup);
}
void Applet::saveState(KConfigGroup* group) const
{
Q_UNUSED(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;
if (containment() && containment()->corona()) {
KSharedConfig::Ptr coronaConfig = containment()->corona()->config();
globalAppletConfig = KConfigGroup(coronaConfig, "AppletGlobals");
} else {
globalAppletConfig = KConfigGroup(KGlobal::config(), "AppletGlobals");
}
return KConfigGroup(&globalAppletConfig, globalName());
}
void Applet::destroy()
{
//kDebug() << "???????????????? DESTROYING APPLET" << name() << " ???????????????????????????";
if (d->configXml) {
d->configXml->setDefaults();
}
resetConfigurationObject();
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()->dataEngine(name);
}
DataEngine* engine = DataEngineManager::self()->loadDataEngine(name);
if (engine->isValid()) {
d->loadedEngines.append(name);
}
return engine;
}
const Package* Applet::package() const
{
return d->package;
}
void Applet::updateConstraints(Plasma::Constraints constraints)
{
d->scheduleConstraintsUpdate(constraints, this);
}
void Applet::constraintsUpdated(Plasma::Constraints constraints)
{
Q_UNUSED(constraints)
//kDebug() << constraints << "constraints are FormFactor: " << formFactor() << ", Location: " << location();
}
QString Applet::name() const
{
if (!d->appletDescription.isValid()) {
return i18n("Unknown Applet");
}
return d->appletDescription.name();
}
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();
}
bool Applet::isImmutable() const
{
return d->immutable || d->kioskImmutable ||
(containment() && containment()->isImmutable()) ||
(dynamic_cast<Corona*>( scene() ) && static_cast<Corona*>(scene())->isImmutable());
}
bool Applet::isKioskImmutable() const
{
return d->kioskImmutable;
}
void Applet::setImmutable(bool immutable)
{
if (d->immutable == immutable) {
return;
}
d->immutable = immutable;
// TODO: should we tell the applets too?
updateConstraints(ImmutableConstraint);
}
bool Applet::drawStandardBackground()
{
return d->background != 0;
}
void Applet::setDrawStandardBackground(bool drawBackground)
{
if (drawBackground) {
if (!d->background) {
d->background = new Plasma::Svg("widgets/background");
updateGeometry();
}
} else if (d->background) {
delete d->background;
d->background = 0;
updateGeometry();
}
}
bool Applet::failedToLaunch() const
{
return d->failed;
}
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 Applet::setFailedToLaunch(bool failed, const QString& reason)
{
if (d->failed == failed) {
if (d->failureText) {
d->failureText->setHtml(visibleFailureText(reason));
setGeometry(QRectF(geometry().topLeft(), d->failureText->sizeHint()));
}
return;
}
d->failed = failed;
prepareGeometryChange();
d->failureText = 0;
qDeleteAll(QGraphicsItem::children());
delete layout();
if (failed) {
setDrawStandardBackground(true);
Layout* failureLayout = new BoxLayout(BoxLayout::TopToBottom, this);
failureLayout->setMargin(0);
d->failureText = new LineEdit(this);
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::self()->colors())
.brush(QPalette::Normal).color());
failureLayout->addItem(d->failureText);
setGeometry(QRectF(geometry().topLeft(), d->failureText->sizeHint()));
}
update();
}
bool Applet::needsConfiguring() const
{
return d->needsConfig;
}
void Applet::setNeedsConfiguring(bool needsConfig)
{
if (d->needsConfig == needsConfig) {
return;
}
d->needsConfig = needsConfig;
prepareGeometryChange();
qDeleteAll(QGraphicsItem::children());
delete layout();
if (needsConfig) {
setDrawStandardBackground(true);
Layout* layout = new BoxLayout(BoxLayout::TopToBottom,this);
PushButton* button = new PushButton(this);
button->setText(i18n("Configure..."));
connect(button, SIGNAL(clicked()), this, SLOT(performSetupConfig()));
layout->addItem(button);
}
}
void Applet::performSetupConfig()
{
qDeleteAll(QGraphicsItem::children());
delete layout();
showConfigurationInterface();
}
void Applet::checkImmutability()
{
d->kioskImmutable = globalConfig().isImmutable() || config().isImmutable() ||
(containment() && containment()->isKioskImmutable()) ||
(dynamic_cast<Corona*>( scene() ) && static_cast<Corona*>(scene())->isKioskImmutable());
setImmutable(d->kioskImmutable);
}
void Applet::flushUpdatedConstraints()
{
if (d->pendingConstraints == NoConstraint) {
return;
}
//kDebug() << "fushing constraints: " << d->pendingConstraints << "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!";
Plasma::Constraints c = d->pendingConstraints;
d->pendingConstraints = NoConstraint;
Containment* containment = qobject_cast<Plasma::Containment*>(this);
if (c & Plasma::FormFactorConstraint) {
FormFactor f = formFactor();
setShadowShown(f == Planar);
setDrawStandardBackground(!containment && f != Vertical && f != Horizontal);
}
if (isContainment() && containment) {
containment->containmentConstraintsUpdated(c);
}
constraintsUpdated(c);
if (layout()) {
layout()->updateGeometry();
}
}
int Applet::type() const
{
return Type;
}
QRectF Applet::boundingRect() const
{
QRectF rect = QRectF(QPointF(0,0), d->contentSize(this));
int left;
int right;
int top;
int bottom;
d->getBorderSize(left,top,right,bottom);
//kDebug() << "Background , Border size" << d->background << left << top << right << bottom;
return rect.adjusted(-left,-top,right,bottom);
}
QSizeF Applet::sizeHint() const
{
int left = 0;
int right = 0;
int top = 0;
int bottom = 0;
d->getBorderSize(left, top, right, bottom);
QSizeF borderSize = QSizeF(left + right, top + bottom);
//kDebug() << "Applet content size hint: " << contentSizeHint() << "plus our borders" << left << right << top << bottom;
return contentSizeHint() + QSizeF(left + right, top + bottom);
}
QList<QAction*> Applet::contextActions()
{
kDebug() << "empty context actions";
return 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::paintWidget(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
{
Q_UNUSED(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) {
//kDebug() << "option rect is" << option->rect;
d->paintBackground(painter, this, option->rect);
}
if (!d->failed && !d->needsConfig) {
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->drawWallpaper()) {
painter->restore();
return;
}
}
//kDebug() << "paint interface of" << (QObject*) this;
paintInterface(painter, option, QRect(QPoint(0,0), d->contentSize(this).toSize()));
}
painter->restore();
}
void Applet::paintInterface(QPainter *painter, const QStyleOptionGraphicsItem *option,
const QRect & contentsRect)
{
Q_UNUSED(contentsRect)
if (d->scriptEngine) {
d->scriptEngine->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
{
QGraphicsItem *parent = parentItem();
Containment *c = 0;
while (parent) {
if ((c = dynamic_cast<Containment*>(parent))) {
break;
}
parent = parent->parentItem();
}
return c;
}
Location Applet::location() const
{
Containment* c = containment();
if (!c) {
return Plasma::Desktop;
}
return c->location();
}
QRectF Applet::contentRect() const
{
return QRectF(QPointF(0, 0), contentSize());
}
QSizeF Applet::contentSize() const
{
int top, left, right, bottom;
d->getBorderSize(left, top, right, bottom);
// kDebug() << "Geometry size: " << geometry().size();
// kDebug() << "Borders: " << left << top << right << bottom;
return (geometry().size() - QSizeF(left + right, top + bottom)).expandedTo(QSizeF(0, 0));
}
void Applet::setContentSize(const QSizeF &size)
{
int top, left, right, bottom;
d->getBorderSize(left, top, right, bottom);
resize(size + QSizeF(left + right, top + bottom));
}
void Applet::setContentSize(int width, int height)
{
setContentSize(QSizeF(width, height));
}
QSizeF Applet::contentSizeHint() const
{
if (layout()) {
return layout()->sizeHint();
}
return contentSize();
}
void Applet::setMinimumContentSize(const QSizeF &minSize)
{
int top, left, right, bottom;
d->getBorderSize(left, top, right, bottom);
setMinimumSize(minSize + QSizeF(left + right, top + bottom));
}
void Applet::setMinimumContentSize(int minWidth, int minHeight)
{
setMinimumContentSize(QSizeF(minWidth, minHeight));
}
QSizeF Applet::minimumContentSize() const
{
int top, left, right, bottom;
d->getBorderSize(left, top, right, bottom);
return minimumSize() - QSizeF(left + right, top + bottom);
}
void Applet::setMaximumContentSize(const QSizeF &maxSize)
{
int top, left, right, bottom;
d->getBorderSize(left, top, right, bottom);
setMaximumSize(maxSize + QSizeF(left + right, top + bottom));
}
void Applet::setMaximumContentSize(int maxWidth, int maxHeight)
{
setMaximumContentSize(QSizeF(maxWidth, maxHeight));
}
QSizeF Applet::maximumContentSize() const
{
int top, left, right, bottom;
d->getBorderSize(left, top, right, bottom);
return maximumSize() - QSizeF(left + right, top + bottom);
}
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::needsFocus(bool focus)
{
if (focus == QGraphicsItem::hasFocus()) {
return;
}
emit requestFocus(focus);
}
bool Applet::hasConfigurationInterface()
{
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);
}
void Applet::showConfigurationInterface()
{
if (d->package && d->configXml) {
QString uiFile = d->package->filePath("mainconfigui");
if (uiFile.isEmpty()) {
return;
}
KConfigDialog *dialog = new KConfigDialog(0, "", d->configXml);
dialog->setWindowTitle(i18n("%1 Settings", name()));
dialog->setAttribute(Qt::WA_DeleteOnClose, true);
QUiLoader loader;
QString filename = d->package->filePath("mainconfigui");
QFile f(filename);
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();
}
}
KPluginInfo::List Applet::knownApplets(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::knownApplets constraint was '" << constraint << "' which got us " << offers.count() << " matches";
return KPluginInfo::fromServices(offers);
}
KPluginInfo::List Applet::knownAppletsForMimetype(const QString &mimetype)
{
QString constraint = QString("'%1' in MimeTypes").arg(mimetype);
//kDebug() << "knownAppletsForMimetype with" << mimetype << constraint;
KService::List offers = KServiceTypeTrader::self()->query("Plasma/Applet", constraint);
return KPluginInfo::fromServices(offers);
}
QStringList Applet::knownCategories(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::loadApplet(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);
if (offers.isEmpty()) {
//TODO: what would be -really- cool is offer to try and download the applet
// from the network at this point
kDebug() << "Applet::loadApplet: 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::nextId();
}
if (!offer->property("X-Plasma-Language").toString().isEmpty()) {
kDebug() << "we have a script in the language of" << offer->property("X-Plasma-Language").toString();
Applet *applet = new Applet(0, offer->storageId(), appletId);
return applet;
}
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::loadApplet(const KPluginInfo& info, uint appletId, const QVariantList& args)
{
if (!info.isValid()) {
return 0;
}
return loadApplet(info.pluginName(), appletId, args);
}
void Applet::setShadowShown(bool shown)
{
//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 (shown) {
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;
}
#else
Q_UNUSED(shown);
#endif
}
bool Applet::isShadowShown() const
{
return d->shadow && d->shadow->isVisible();
}
QVariant Applet::itemChange(GraphicsItemChange change, const QVariant &value)
{
switch (change) {
case ItemPositionChange:
if (d->shadow) {
d->shadow->adjustPosition();
}
break;
case ItemSceneChange: {
QGraphicsScene *newScene = qvariant_cast<QGraphicsScene*>(value);
if (newScene) {
// checking immutability requires having a working config object
// Applet relies on having a Corona scene to be able to get the
// correct config. so we have to wait until we have the scene,
// otherwise we trigger premature creation of the config objects
QTimer::singleShot(0, this, SLOT(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 Widget::itemChange(change, value);
}
void Applet::setGeometry(const QRectF& geometry)
{
if (geometry.size().width() > 0 && geometry.size().height() > 0 && size() != geometry.size()) {
prepareGeometryChange();
qreal width = qBound(minimumSize().width(), geometry.size().width(), maximumSize().width());
qreal height = qBound(minimumSize().height(), geometry.size().height(), maximumSize().height());
setSize(QSizeF(width, height));
if (layout()) {
layout()->setGeometry(QRectF(QPoint(0, 0), contentSize()));
}
if (managingLayout()) {
managingLayout()->invalidate();
}
updateConstraints(Plasma::SizeConstraint);
}
setPos(geometry.topLeft());
emit geometryChanged();
update();
}
void Applet::setIsContainment(bool isContainment)
{
d->isContainment = isContainment;
}
bool Applet::isContainment() const
{
return d->isContainment;
}
} // Plasma namespace
#include "applet.moc"
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