/* * Copyright 2009 by Rob Scheepmaker <r.scheepmaker@student.utwente.nl> * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, * Boston, MA 02110-1301 USA */ #include "extendergroup.h" #include <QAction> #include <QApplication> #include <QString> #include <QList> #include <QTimer> #include <QtGui/QGraphicsWidget> #include <QtGui/QGraphicsLinearLayout> #include <QtGui/QGraphicsSceneDragDropEvent> #include "applet.h" #include "extender.h" #include "extenderitem.h" #include "theme.h" #include "widgets/scrollwidget.h" #include "private/extender_p.h" #include "private/extendergroup_p.h" #include "private/extenderitemmimedata_p.h" namespace Plasma { ExtenderGroup::ExtenderGroup(Extender *parent, uint groupId) : ExtenderItem(parent, groupId), d(new ExtenderGroupPrivate(this)) { connect(extender(), SIGNAL(itemAttached(Plasma::ExtenderItem*)), this, SLOT(addItemToGroup(Plasma::ExtenderItem*))); connect(extender(), SIGNAL(itemDetached(Plasma::ExtenderItem*)), this, SLOT(removeItemFromGroup(Plasma::ExtenderItem*))); //this isn't actually connected to anything, we will just check if it's running or not d->resizeTimer = new QTimer(this); d->resizeTimer->setSingleShot(true); config().writeEntry("isGroup", true); setAcceptDrops(true); QGraphicsLinearLayout *lay = static_cast<QGraphicsLinearLayout *>(layout()); d->childsWidget = new QGraphicsWidget(this); d->childsWidget->installEventFilter(this); d->layout = new QGraphicsLinearLayout(Qt::Vertical, d->childsWidget); d->childsWidget->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed); lay->addItem(d->childsWidget); QAction *expand = new QAction(this); expand->setVisible(false); expand->setToolTip(i18n("Show this group.")); connect(expand, SIGNAL(triggered()), this, SLOT(expandGroup())); addAction("expand", expand); QAction *collapse = new QAction(this); collapse->setVisible(true); collapse->setToolTip(i18n("Hide this group.")); connect(collapse, SIGNAL(triggered()), this, SLOT(collapseGroup())); addAction("collapse", collapse); d->themeChanged(); QString groupName; foreach (ExtenderItem *item, extender()->attachedItems()) { groupName = item->config().readEntry("group", ""); if (!groupName.isEmpty() && groupName == name()) { item->setGroup(this); } } if (items().isEmpty() && d->autoHide && !isDetached()) { extender()->itemRemovedEvent(this); hide(); } if (!config().readEntry("groupCollapsed", true)) { expandGroup(); } connect(Plasma::Theme::defaultTheme(), SIGNAL(themeChanged()), this, SLOT(themeChanged())); } ExtenderGroup::~ExtenderGroup() { delete d; } QList<ExtenderItem*> ExtenderGroup::items() const { QList<ExtenderItem*> result; foreach (ExtenderItem *item, extender()->attachedItems()) { if (item->group() == this) { result.append(item); } } return result; } bool ExtenderGroup::autoHide() const { return d->autoHide; } void ExtenderGroup::setAutoHide(bool autoHide) { d->autoHide = autoHide; if (autoHide && items().isEmpty()) { extender()->itemRemovedEvent(this); hide(); } else if (!autoHide && !isVisible()) { extender()->itemAddedEvent(this); show(); } } bool ExtenderGroup::isAutoCollapse() const { return d->autoCollapse; } void ExtenderGroup::setAutoCollapse(bool collapse) { d->autoCollapse = collapse; } bool ExtenderGroup::isGroupCollapsed() const { return d->collapsed; } void ExtenderGroup::setGroupCollapsed(bool collapsed) { if (collapsed) { collapseGroup(); } else { expandGroup(); } } void ExtenderGroup::expandGroup() { if (d->autoCollapse) { setCollapsed(false); } if (d->collapsed == false) { return; } d->collapsed = false; config().writeEntry("groupCollapsed", d->collapsed); action("collapse")->setVisible(true); action("expand")->setVisible(false); d->childsWidget->show(); static_cast<QGraphicsLinearLayout *>(layout())->addItem(d->childsWidget); updateGeometry(); foreach (ExtenderItem *item, extender()->attachedItems()) { if (item->group() == this) { item->show(); extender()->itemAddedEvent(item); } } //extender()->resize(extender()->effectiveSizeHint(Qt::PreferredSize)); } void ExtenderGroup::collapseGroup() { if (d->autoCollapse) { setCollapsed(true); } if (d->collapsed == true) { return; } d->collapsed = true; config().writeEntry("groupCollapsed", d->collapsed); action("collapse")->setVisible(false); action("expand")->setVisible(true); d->childsWidget->hide(); static_cast<QGraphicsLinearLayout *>(layout())->removeItem(d->childsWidget); updateGeometry(); foreach (ExtenderItem *item, extender()->attachedItems()) { if (item != this && item->group() == this) { item->hide(); extender()->itemRemovedEvent(item); } } } void ExtenderGroup::resizeEvent(QGraphicsSceneResizeEvent *event) { ExtenderItem::resizeEvent(event); } bool ExtenderGroup::eventFilter(QObject *watched, QEvent *event) { if (watched == d->childsWidget && event->type() == QEvent::GraphicsSceneResize) { static_cast<QGraphicsLayoutItem *>(extender()->d->scrollWidget)->updateGeometry(); if (!d->resizeTimer->isActive()) { static_cast<QGraphicsLayoutItem *>(extender())->updateGeometry(); extender()->d->adjustSize(); d->resizeTimer->start(0); } } return ExtenderItem::eventFilter(watched, event); } void ExtenderGroup::dragEnterEvent(QGraphicsSceneDragDropEvent *event) { if (event->mimeData()->hasFormat(ExtenderItemMimeData::mimeType())) { event->accept(); dragMoveEvent(event); } } void ExtenderGroup::dragMoveEvent(QGraphicsSceneDragDropEvent *event) { if (event->mimeData()->hasFormat(ExtenderItemMimeData::mimeType())) { const ExtenderItemMimeData *mimeData = qobject_cast<const ExtenderItemMimeData*>(event->mimeData()); if (mimeData) { QPointF pos(event->pos()); if (d->spacerWidget && d->spacerWidget->geometry().contains(pos)) { return; } //Make sure we remove any spacer that might already be in the layout. if (d->spacerWidget) { d->layout->removeItem(d->spacerWidget); } int insertIndex = d->insertIndexFromPos(pos); //Create a widget that functions as spacer, and add that to the layout. if (!d->spacerWidget) { Spacer *widget = new Spacer(this); ExtenderItem *item = mimeData->extenderItem(); qreal left, top, right, bottom; extender()->d->background->getMargins(left, top, right, bottom); widget->setMargins(left, 4, right, 4); widget->setMinimumSize(item->minimumSize()); widget->setPreferredSize(item->preferredSize()); widget->setMaximumSize(item->maximumSize()); widget->setSizePolicy(item->sizePolicy()); d->spacerWidget = widget; } d->layout->insertItem(insertIndex, d->spacerWidget); extender()->d->setPositionFromDragPosition(event->scenePos()); } } } void ExtenderGroup::dropEvent(QGraphicsSceneDragDropEvent *event) { if (event->mimeData()->hasFormat(ExtenderItemMimeData::mimeType())) { const ExtenderItemMimeData *mimeData = qobject_cast<const ExtenderItemMimeData*>(event->mimeData()); if (mimeData) { mimeData->extenderItem()->setGroup(this, event->pos()); QApplication::restoreOverrideCursor(); d->layout->removeItem(d->spacerWidget); d->spacerWidget->deleteLater(); d->spacerWidget = 0; } } } void ExtenderGroup::dragLeaveEvent(QGraphicsSceneDragDropEvent *event) { if (event->mimeData()->hasFormat(ExtenderItemMimeData::mimeType())) { if (d->spacerWidget) { d->layout->removeItem(d->spacerWidget); d->spacerWidget->deleteLater(); d->spacerWidget = 0; } } } ExtenderGroupPrivate::ExtenderGroupPrivate(ExtenderGroup *group) : q(group), spacerWidget(0), svg(new Svg(group)), collapsed(false), autoHide(true), autoCollapse(false) { } ExtenderGroupPrivate::~ExtenderGroupPrivate() { } void ExtenderGroupPrivate::addItemToGroup(Plasma::ExtenderItem *item, const QPointF &pos) { if (item->group() == q) { item->setParentItem(childsWidget); item->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed); layout->insertItem(insertIndexFromPos(pos), item); layout->activate(); if (!q->isVisible() && !q->items().isEmpty()) { q->extender()->itemAddedEvent(q); q->show(); } childsWidget->setVisible(!q->isGroupCollapsed()); if (!q->isGroupCollapsed()) { layout->updateGeometry(); static_cast<QGraphicsLayoutItem *>(q)->updateGeometry(); static_cast<QGraphicsLayoutItem *>(childsWidget)->updateGeometry(); static_cast<QGraphicsLayoutItem *>(q->extender()->d->scrollWidget)->updateGeometry(); } q->extender()->d->adjustSize(); } } void ExtenderGroupPrivate::removeItemFromGroup(Plasma::ExtenderItem *item) { if (item->group() == q) { if (q->items().isEmpty() && autoHide && !q->isDetached()) { q->extender()->itemRemovedEvent(q); q->hide(); } layout->removeItem(item); item->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred); layout->updateGeometry(); static_cast<QGraphicsLayoutItem *>(q)->updateGeometry(); static_cast<QGraphicsLayoutItem *>(childsWidget)->updateGeometry(); static_cast<QGraphicsLayoutItem *>(q->extender()->d->scrollWidget)->updateGeometry(); q->extender()->d->adjustSize(); } } void ExtenderGroupPrivate::themeChanged() { svg->setImagePath("widgets/configuration-icons"); svg->resize(); q->action("expand")->setIcon(QIcon(svg->pixmap("restore"))); q->action("collapse")->setIcon(QIcon(svg->pixmap("collapse"))); } int ExtenderGroupPrivate::insertIndexFromPos(const QPointF &pos) const { int insertIndex = -1; //XXX: duplicated from panel if (pos != QPointF(-1, -1)) { for (int i = 0; i < layout->count(); ++i) { QRectF siblingGeometry = layout->itemAt(i)->geometry(); qreal middle = (siblingGeometry.top() + siblingGeometry.bottom()) / 2.0; if (pos.y() < middle) { insertIndex = i; break; } else if (pos.y() <= siblingGeometry.bottom()) { insertIndex = i + 1; break; } } } return insertIndex; } } // Plasma namespace #include "extendergroup.moc"