920 lines
28 KiB
C++
920 lines
28 KiB
C++
/*
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* Copyright 2008, 2009 by Rob Scheepmaker <r.scheepmaker@student.utwente.nl>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301 USA
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*/
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#include "extender.h"
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#include <QAction>
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#include <QLabel>
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#include <QGraphicsSceneDragDropEvent>
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#include <QGraphicsGridLayout>
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#include <QGraphicsLinearLayout>
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#include <QPainter>
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#include "applet.h"
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#include "containment.h"
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#include "corona.h"
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#include "extendergroup.h"
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#include "extenderitem.h"
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#include "framesvg.h"
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#include "paintutils.h"
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#include "popupapplet.h"
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#include "svg.h"
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#include "theme.h"
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#include "widgets/label.h"
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#include "widgets/scrollwidget.h"
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#include "private/applet_p.h"
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#include "private/applethandle_p.h"
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#include "private/extender_p.h"
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#include "private/extenderapplet_p.h"
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#include "private/extenderitem_p.h"
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#include "private/extenderitemmimedata_p.h"
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#include "private/popupapplet_p.h"
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namespace Plasma
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{
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Spacer::Spacer(QGraphicsItem *parent)
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: QGraphicsWidget(parent)
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{
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}
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Spacer::~Spacer()
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{
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}
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void Spacer::setMargins(qreal left, qreal top, qreal right, qreal bottom)
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{
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m_left = left;
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m_top = top;
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m_right = right;
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m_bottom = bottom;
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}
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void Spacer::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
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{
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Q_UNUSED(option)
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Q_UNUSED(widget)
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painter->setRenderHint(QPainter::Antialiasing);
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QPainterPath p = Plasma::PaintUtils::roundedRectangle(
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contentsRect().adjusted(m_left, m_top, -m_right, -m_bottom), 4);
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QColor c = Plasma::Theme::defaultTheme()->color(Plasma::Theme::TextColor);
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c.setAlphaF(0.3);
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painter->fillPath(p, c);
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}
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Extender::Extender(Applet *applet)
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: QGraphicsWidget(applet),
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d(new ExtenderPrivate(applet, this))
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{
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//At multiple places in the extender code, we make the assumption that an applet doesn't have
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//more then one extender. If a second extender is created, destroy the first one to avoid leaks.
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if (applet->d->extender) {
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kWarning() << "Applet already has an extender, and can have only one extender."
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<< "The previous extender will be destroyed.";
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delete applet->d->extender.data();
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} else if (PopupApplet *popup = qobject_cast<PopupApplet *>(applet)) {
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if (!popup->d->graphicsWidget) {
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// ensure the popup gets a dialog with us as the graphics widget
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popup->d->popupConstraintsEvent(SizeConstraint);
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}
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}
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applet->d->extender = this;
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setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
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d->scrollWidget = new ScrollWidget(this);
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d->scrollWidget->setOverflowBordersVisible(false);
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d->scrollWidget->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
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d->mainWidget = new QGraphicsWidget(d->scrollWidget);
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d->scrollWidget->setWidget(d->mainWidget);
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d->mainWidget->setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::MinimumExpanding);
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connect(d->scrollWidget, SIGNAL(viewportGeometryChanged(const QRectF &)),
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this, SLOT(viewportGeometryChanged(const QRectF &)));
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d->layout = new QGraphicsLinearLayout(d->mainWidget);
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d->layout->setOrientation(Qt::Vertical);
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d->layout->setContentsMargins(0, 0, 0, 0);
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d->layout->setSpacing(0);
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QGraphicsLinearLayout *lay = new QGraphicsLinearLayout(Qt::Vertical, this);
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lay->addItem(d->scrollWidget);
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setContentsMargins(0, 0, 0, 0);
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lay->setContentsMargins(0, 0, 0, 0);
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d->loadExtenderItems();
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setAcceptDrops(true);
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}
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Extender::~Extender()
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{
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d->destroying = true;
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// when deleting items that are connected to us, it can happen that
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// other items which are in groups may get deleted as well. so we first
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// build a new list of guarded pointers, and then use that list. that
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// way when items are deleted behind our back, we are still safe.
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// FIXME: having groups and items in the same collection is probably a mistake,
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// so would be a good candidate for a refactoring exercise
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QList<QWeakPointer<ExtenderItem> > guardedItems;
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foreach (ExtenderItem *item, d->attachedExtenderItems) {
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guardedItems << QWeakPointer<ExtenderItem>(item);
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}
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d->attachedExtenderItems.clear();
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foreach (const QWeakPointer<ExtenderItem> &guardedItem, guardedItems) {
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ExtenderItem *item = guardedItem.data();
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if (item) {
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item->disconnect(this);
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delete item;
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}
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}
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delete d;
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}
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void Extender::setEmptyExtenderMessage(const QString &message)
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{
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d->emptyExtenderMessage = message;
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if (d->emptyExtenderLabel) {
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d->emptyExtenderLabel->setText(message);
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}
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}
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QString Extender::emptyExtenderMessage() const
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{
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return d->emptyExtenderMessage;
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}
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QList<ExtenderItem*> Extender::items() const
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{
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QList<ExtenderItem*> result;
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//FIXME: a triple nested loop ... ew. there should be a more efficient way to do this
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//iterate through all extenders we can find and check each extenders source applet.
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if (!d->applet) {
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return QList<ExtenderItem*>();
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}
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Containment *containment = d->applet.data()->containment();
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if (!containment) {
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return result;
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}
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foreach (Containment *c, containment->corona()->containments()) {
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foreach (Applet *applet, c->applets()) {
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if (applet->d->extender) {
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foreach (ExtenderItem *item, applet->d->extender.data()->d->attachedExtenderItems) {
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if (item->d->sourceApplet == d->applet.data()) {
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result.append(item);
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}
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}
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}
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}
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}
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return result;
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}
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QList<ExtenderItem*> Extender::attachedItems() const
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{
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return d->attachedExtenderItems;
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}
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QList<ExtenderItem*> Extender::detachedItems() const
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{
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QList<ExtenderItem*> result;
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//FIXME: a triple nested loop ... ew. there should be a more efficient way to do this
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//iterate through all extenders we can find and check each extenders source applet.
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if (!d->applet) {
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return QList<ExtenderItem*>();
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}
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Containment *containment = d->applet.data()->containment();
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if (!containment) {
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return result;
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}
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foreach (Containment *c, containment->corona()->containments()) {
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foreach (Applet *applet, c->applets()) {
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if (applet->d->extender) {
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foreach (ExtenderItem *item, applet->d->extender.data()->attachedItems()) {
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if (item->d->sourceApplet == d->applet.data() && item->isDetached()) {
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result.append(item);
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}
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}
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}
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}
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}
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return result;
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}
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ExtenderItem *Extender::item(const QString &name) const
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{
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// chances are the item is in our own extender, so check there first
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foreach (ExtenderItem *item, d->attachedExtenderItems) {
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if (item->d->sourceApplet == d->applet.data() && item->name() == name) {
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return item;
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}
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}
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// maybe it's been moved elsewhere, so lets search through the entire tree of elements
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//FIXME: a triple nested loop ... ew. there should be a more efficient way to do this
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//iterate through all extenders we can find and check each extenders source applet.
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if (!d->applet) {
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return 0;
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}
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Containment *containment = d->applet.data()->containment();
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if (!containment) {
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return 0;
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}
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QList<Containment *> containments;
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if (containment->corona()) {
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containments = containment->corona()->containments();
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} else {
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containments << containment;
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}
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foreach (Containment *c, containments) {
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foreach (Applet *applet, c->applets()) {
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if (applet->d->extender) {
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if (applet->d->extender.data() == this) {
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// skip it, we checked it already
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continue;
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}
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if (!applet->d->extender) {
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continue;
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}
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foreach (ExtenderItem *item, applet->d->extender.data()->attachedItems()) {
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if (item->d->sourceApplet == d->applet.data() && item->name() == name) {
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return item;
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}
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}
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}
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}
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}
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return 0;
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}
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ExtenderGroup *Extender::group(const QString &name) const
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{
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return qobject_cast<ExtenderGroup*>(item(name));
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}
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bool Extender::hasItem(const QString &name) const
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{
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if (item(name)) {
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return true;
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}
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if (!d->applet) {
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return false;
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}
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//if item(name) returns false, that doesn't mean that the item doesn't exist, just that it has
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//not been instantiated yet. check to see if there's mention of this item existing in the
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//plasma config's section DetachedExtenderItems
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Corona *corona = qobject_cast<Corona *>(scene());
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if (!corona) {
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return false;
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}
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KConfigGroup extenderItemGroup(corona->config(), "DetachedExtenderItems");
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foreach (const QString &extenderItemId, extenderItemGroup.groupList()) {
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KConfigGroup cg = extenderItemGroup.group(extenderItemId);
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if (uint(cg.readEntry("sourceAppletId", 0)) == d->applet.data()->id() &&
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cg.readEntry("extenderItemName", "") == name &&
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cg.readEntry("sourceAppletPluginName", "") == d->applet.data()->pluginName()) {
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return true;
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}
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}
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return false;
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}
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void Extender::setAppearance(Appearance appearance)
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{
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if (d->appearance == appearance) {
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return;
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}
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d->appearance = appearance;
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d->updateBorders();
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}
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Extender::Appearance Extender::appearance() const
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{
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return d->appearance;
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}
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QList<ExtenderGroup*> Extender::groups() const
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{
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QList<ExtenderGroup *> result;
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foreach (ExtenderItem *item, d->attachedExtenderItems) {
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if (item->isGroup() && !result.contains(item->group())) {
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ExtenderGroup *group = qobject_cast<ExtenderGroup *>(item);
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if (group) {
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result.append(group);
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}
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}
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}
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return result;
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}
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Applet *Extender::applet() const
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{
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return d->applet.data();
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}
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void Extender::saveState()
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{
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foreach (ExtenderItem *item, attachedItems()) {
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item->config().writeEntry("extenderItemPosition", item->geometry().y());
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}
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}
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QVariant Extender::itemChange(GraphicsItemChange change, const QVariant &value)
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{
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if (change == QGraphicsItem::ItemPositionHasChanged) {
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emit geometryChanged();
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}
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return QGraphicsWidget::itemChange(change, value);
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}
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void Extender::resizeEvent(QGraphicsSceneResizeEvent *event)
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{
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QGraphicsWidget::resizeEvent(event);
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emit geometryChanged();
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}
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void Extender::mousePressEvent(QGraphicsSceneMouseEvent *event)
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{
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Q_UNUSED(event)
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if (!d->applet) {
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return;
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}
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PopupApplet *popupApplet = qobject_cast<PopupApplet*>(d->applet.data());
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if (isEmpty() && popupApplet) {
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popupApplet->hidePopup();
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}
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}
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void Extender::dragEnterEvent(QGraphicsSceneDragDropEvent *event)
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{
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if (event->mimeData()->hasFormat(ExtenderItemMimeData::mimeType())) {
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event->accept();
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const ExtenderItemMimeData *mimeData =
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qobject_cast<const ExtenderItemMimeData*>(event->mimeData());
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if (mimeData) {
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itemHoverEnterEvent(mimeData->extenderItem());
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PopupApplet *popupApplet = qobject_cast<PopupApplet*>(d->applet.data());
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if (popupApplet) {
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popupApplet->showPopup();
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}
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}
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}
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}
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void Extender::dragMoveEvent(QGraphicsSceneDragDropEvent *event)
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{
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if (event->mimeData()->hasFormat(ExtenderItemMimeData::mimeType())) {
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const ExtenderItemMimeData *mimeData =
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qobject_cast<const ExtenderItemMimeData*>(event->mimeData());
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if (mimeData) {
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itemHoverMoveEvent(mimeData->extenderItem(), event->pos());
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d->setPositionFromDragPosition(event->scenePos());
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}
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}
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}
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void Extender::dragLeaveEvent(QGraphicsSceneDragDropEvent *event)
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{
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if (event->mimeData()->hasFormat(ExtenderItemMimeData::mimeType())) {
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const ExtenderItemMimeData *mimeData =
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qobject_cast<const ExtenderItemMimeData*>(event->mimeData());
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if (mimeData) {
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itemHoverLeaveEvent(mimeData->extenderItem());
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//Some logic to conveniently show/hide popups or applets when logical.
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Extender *sourceExtender = mimeData->extenderItem()->d->extender;
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//Hide popups when they're not the extender where we started, and we're leaving the
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//extender. Use a small timeout here, to avoid accidental hides of extenders we're
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//targetting.
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PopupApplet *popupApplet = qobject_cast<PopupApplet*>(d->applet.data());
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if (popupApplet && sourceExtender != this) {
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kDebug() << "leaving another extender then the extender we started, so hide the popup.";
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popupApplet->showPopup(250);
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}
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//Hide popups when we drag the last item away.
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if (popupApplet && sourceExtender == this && (attachedItems().count() < 2)) {
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kDebug() << "leaving the extender, and there are no more attached items so hide the popup.";
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popupApplet->hidePopup();
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}
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//Hide empty internal extender containers when we drag the last item away. Avoids having
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//an ugly empty applet on the desktop temporarily.
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ExtenderApplet *extenderApplet = qobject_cast<ExtenderApplet*>(d->applet.data());
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if (extenderApplet && sourceExtender == this && attachedItems().count() < 2 &&
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extenderApplet->formFactor() != Plasma::Horizontal &&
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extenderApplet->formFactor() != Plasma::Vertical) {
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kDebug() << "leaving the internal extender container, so hide the applet and it's handle.";
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extenderApplet->hide();
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AppletHandle *handle = dynamic_cast<AppletHandle*>(extenderApplet->parentItem());
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if (handle) {
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handle->hide();
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}
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}
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}
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}
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}
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void Extender::dropEvent(QGraphicsSceneDragDropEvent *event)
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{
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if (event->mimeData()->hasFormat(ExtenderItemMimeData::mimeType())) {
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const ExtenderItemMimeData *mimeData =
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qobject_cast<const ExtenderItemMimeData*>(event->mimeData());
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if (mimeData) {
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mimeData->extenderItem()->setExtender(this, event->pos());
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QApplication::restoreOverrideCursor();
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itemHoverLeaveEvent(0);
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}
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}
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}
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void Extender::itemAddedEvent(ExtenderItem *item, const QPointF &pos)
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{
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if (!item->group()) {
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if (pos == QPointF(-1, -1)) {
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//if it was already there, reposition
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d->layout->removeItem(item);
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//if just plain adding an item, add it at a sane position:
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if (appearance() == BottomUpStacked) {
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//at the top
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d->layout->insertItem(0, item);
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} else {
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//at the bottom
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d->layout->addItem(item);
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}
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} else {
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kDebug() << "inserting at" << pos << d->insertIndexFromPos(pos) << item->size();
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d->layout->insertItem(d->insertIndexFromPos(pos), item);
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kDebug() << item->size();
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}
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}
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d->adjustMinimumSize();
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//remove the empty extender message if needed.
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d->updateEmptyExtenderLabel();
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d->updateBorders();
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resize(d->mainWidget->effectiveSizeHint(Qt::PreferredSize));
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}
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void Extender::itemRemovedEvent(ExtenderItem *item)
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{
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if (d->destroying) {
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return;
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}
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d->layout->removeItem(item);
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if (d->spacerWidget) {
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d->layout->removeItem(d->spacerWidget);
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delete d->spacerWidget;
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d->spacerWidget = 0;
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}
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d->adjustMinimumSize();
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//add the empty extender message if needed.
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d->updateEmptyExtenderLabel();
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d->updateBorders();
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d->layout->updateGeometry();
|
|
static_cast<QGraphicsLayoutItem *>(d->scrollWidget)->updateGeometry();
|
|
updateGeometry();
|
|
|
|
resize(d->mainWidget->effectiveSizeHint(Qt::PreferredSize));
|
|
}
|
|
|
|
void Extender::itemHoverEnterEvent(ExtenderItem *item)
|
|
{
|
|
itemHoverMoveEvent(item, QPointF(0, 0));
|
|
}
|
|
|
|
void Extender::itemHoverMoveEvent(ExtenderItem *item, const QPointF &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);
|
|
qreal left, top, right, bottom;
|
|
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);
|
|
|
|
//Make sure we remove any 'no detachables' label that might be there, and update the layout.
|
|
d->updateEmptyExtenderLabel();
|
|
}
|
|
|
|
void Extender::itemHoverLeaveEvent(ExtenderItem *item)
|
|
{
|
|
Q_UNUSED(item);
|
|
|
|
if (d->spacerWidget) {
|
|
//Remove any trace of the spacer widget.
|
|
d->layout->removeItem(d->spacerWidget);
|
|
delete d->spacerWidget;
|
|
d->spacerWidget = 0;
|
|
|
|
d->currentSpacerIndex = -1;
|
|
|
|
d->updateEmptyExtenderLabel();
|
|
}
|
|
}
|
|
|
|
FrameSvg::EnabledBorders Extender::enabledBordersForItem(ExtenderItem *item) const
|
|
{
|
|
if (d->layout->count() < 1) {
|
|
return 0;
|
|
}
|
|
|
|
ExtenderItem *topItem = dynamic_cast<ExtenderItem*>(d->layout->itemAt(0));
|
|
ExtenderItem *bottomItem = dynamic_cast<ExtenderItem*>(d->layout->itemAt(d->layout->count() - 1));
|
|
|
|
FrameSvg::EnabledBorders borders = FrameSvg::NoBorder;
|
|
|
|
if (item->group()) {
|
|
return FrameSvg::NoBorder;
|
|
} else if (d->appearance == TopDownStacked && bottomItem != item) {
|
|
borders = FrameSvg::LeftBorder | FrameSvg::BottomBorder | FrameSvg::RightBorder;
|
|
} else if (d->appearance == BottomUpStacked && topItem != item) {
|
|
borders = FrameSvg::LeftBorder | FrameSvg::TopBorder | FrameSvg::RightBorder;
|
|
} else if (d->appearance != NoBorders) {
|
|
borders = FrameSvg::LeftBorder | FrameSvg::RightBorder;
|
|
} else {
|
|
return FrameSvg::NoBorder;
|
|
}
|
|
|
|
if (d->scrollWidget->viewportGeometry().height() < d->mainWidget->boundingRect().height()) {
|
|
if (QApplication::layoutDirection() == Qt::RightToLeft) {
|
|
borders &= ~FrameSvg::LeftBorder;
|
|
} else {
|
|
borders &= ~FrameSvg::RightBorder;
|
|
}
|
|
}
|
|
|
|
return borders;
|
|
}
|
|
|
|
ExtenderPrivate::ExtenderPrivate(Applet *applet, Extender *extender) :
|
|
q(extender),
|
|
applet(applet),
|
|
background(new FrameSvg(extender)),
|
|
currentSpacerIndex(-1),
|
|
spacerWidget(0),
|
|
emptyExtenderMessage(QString()),
|
|
emptyExtenderLabel(0),
|
|
appearance(Extender::NoBorders),
|
|
destroying(false)
|
|
{
|
|
background->setImagePath("widgets/extender-background");
|
|
}
|
|
|
|
ExtenderPrivate::~ExtenderPrivate()
|
|
{
|
|
}
|
|
|
|
void ExtenderPrivate::addExtenderItem(ExtenderItem *item, const QPointF &pos)
|
|
{
|
|
if (attachedExtenderItems.contains(item)) {
|
|
pendingItems.remove(item);
|
|
q->itemAddedEvent(item, pos);
|
|
return;
|
|
}
|
|
|
|
QObject::connect(item, SIGNAL(destroyed(Plasma::ExtenderItem*)), q, SLOT(extenderItemDestroyed(Plasma::ExtenderItem*)));
|
|
attachedExtenderItems.append(item);
|
|
q->itemHoverLeaveEvent(item);
|
|
pendingItems[item] = pos;
|
|
QTimer::singleShot(0, q, SLOT(delayItemAddedEvent()));
|
|
}
|
|
|
|
void ExtenderPrivate::removeExtenderItem(ExtenderItem *item)
|
|
{
|
|
attachedExtenderItems.removeAll(item);
|
|
|
|
//collapse the popupapplet if the last item is removed.
|
|
if (attachedExtenderItems.isEmpty()) {
|
|
PopupApplet *popupApplet = qobject_cast<PopupApplet*>(applet.data());
|
|
if (popupApplet) {
|
|
popupApplet->hidePopup();
|
|
}
|
|
}
|
|
|
|
q->itemRemovedEvent(item);
|
|
}
|
|
|
|
int ExtenderPrivate::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;
|
|
}
|
|
|
|
void ExtenderPrivate::loadExtenderItems()
|
|
{
|
|
if (!applet) {
|
|
return;
|
|
}
|
|
|
|
KConfigGroup cg = applet.data()->config("ExtenderItems");
|
|
|
|
//first create a list of extenderItems, and then sort them on their position, so the items get
|
|
//recreated in the correct order.
|
|
QList<QPair<int, QString> > groupList;
|
|
foreach (const QString &extenderItemId, cg.groupList()) {
|
|
KConfigGroup dg = cg.group(extenderItemId);
|
|
groupList.append(qMakePair(dg.readEntry("extenderItemPosition", 0), extenderItemId));
|
|
}
|
|
qSort(groupList);
|
|
|
|
//iterate over the extender items
|
|
for (int i = 0; i < groupList.count(); i++) {
|
|
QPair<int, QString> pair = groupList[i];
|
|
|
|
KConfigGroup dg = cg.group(pair.second);
|
|
|
|
//load the relevant settings.
|
|
QString extenderItemId = dg.name();
|
|
QString extenderItemName = dg.readEntry("extenderItemName", "");
|
|
QString appletName = dg.readEntry("sourceAppletPluginName", "");
|
|
uint sourceAppletId = dg.readEntry("sourceAppletId", 0);
|
|
|
|
bool temporarySourceApplet = false;
|
|
|
|
kDebug() << "applet id = " << applet.data()->id();
|
|
kDebug() << "sourceappletid = " << sourceAppletId;
|
|
|
|
//find the source applet.
|
|
Applet *sourceApplet = 0;
|
|
if (applet.data()->id() == sourceAppletId) {
|
|
// it's ours!
|
|
sourceApplet = applet.data();
|
|
} else {
|
|
// maybe it's foreign?
|
|
Containment *containment = applet.data()->containment();
|
|
|
|
if (containment) {
|
|
Corona *corona = containment->corona();
|
|
|
|
if (sourceAppletId == q->applet()->id()) {
|
|
sourceApplet = q->applet();
|
|
} else {
|
|
foreach (Containment *containment, corona->containments()) {
|
|
foreach (Applet *applet, containment->applets()) {
|
|
if (applet->id() == sourceAppletId) {
|
|
sourceApplet = applet;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
//There is no source applet. We just instantiate one just for the sake of creating
|
|
//detachables.
|
|
if (!sourceApplet) {
|
|
kDebug() << "creating a temporary applet as factory";
|
|
sourceApplet = Applet::load(appletName);
|
|
temporarySourceApplet = true;
|
|
//TODO: maybe add an option to applet to indicate that it shouldn't be deleted after
|
|
//having used it as factory.
|
|
}
|
|
|
|
if (!sourceApplet) {
|
|
kDebug() << "sourceApplet is null? appletName = " << appletName;
|
|
kDebug() << " extenderItemId = " << extenderItemId;
|
|
} else {
|
|
ExtenderItem *item;
|
|
if (dg.readEntry("isGroup", false)) {
|
|
item = new ExtenderGroup(q, extenderItemId.toInt());
|
|
} else {
|
|
item = new ExtenderItem(q, extenderItemId.toInt());
|
|
}
|
|
sourceApplet->initExtenderItem(item);
|
|
item->d->sourceApplet = sourceApplet;
|
|
|
|
if (temporarySourceApplet) {
|
|
delete sourceApplet;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void ExtenderPrivate::updateBorders()
|
|
{
|
|
foreach (ExtenderItem *item, attachedExtenderItems) {
|
|
if (item && (item->d->background->enabledBorders() != q->enabledBordersForItem(item))) {
|
|
//call themeChanged to change the backgrounds enabled borders, and move all contained
|
|
//widgets according to it's changed margins.
|
|
item->d->themeChanged();
|
|
}
|
|
}
|
|
}
|
|
|
|
void ExtenderPrivate::delayItemAddedEvent()
|
|
{
|
|
QHash<Plasma::ExtenderItem *, QPointF>::const_iterator i = pendingItems.constBegin();
|
|
while (i != pendingItems.constEnd()) {
|
|
q->itemAddedEvent(i.key(), i.value());
|
|
++i;
|
|
}
|
|
pendingItems.clear();
|
|
}
|
|
|
|
void ExtenderPrivate::updateEmptyExtenderLabel()
|
|
{
|
|
if (q->isEmpty() && !emptyExtenderLabel &&
|
|
!emptyExtenderMessage.isEmpty() && !spacerWidget ) {
|
|
//add the empty extender label.
|
|
emptyExtenderLabel = new Label(q);
|
|
emptyExtenderLabel->setAlignment(Qt::AlignCenter);
|
|
emptyExtenderLabel->setText(emptyExtenderMessage);
|
|
|
|
qreal left, top, right, bottom;
|
|
background->getMargins(left, top, right, bottom);
|
|
emptyExtenderLabel->nativeWidget()->setMargin(left + right);
|
|
|
|
emptyExtenderLabel->setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::Fixed);
|
|
layout->addItem(emptyExtenderLabel);
|
|
} else if (!q->isEmpty() && emptyExtenderLabel) {
|
|
//remove the empty extender label.
|
|
layout->removeItem(emptyExtenderLabel);
|
|
delete emptyExtenderLabel;
|
|
emptyExtenderLabel = 0;
|
|
}
|
|
}
|
|
|
|
void ExtenderPrivate::adjustMinimumSize()
|
|
{
|
|
//FIXME: hardcoded number for the scrollbar
|
|
scrollWidget->setMinimumWidth(mainWidget->effectiveSizeHint(Qt::MinimumSize).width() + 32);
|
|
//FIXME: hardcoded number
|
|
scrollWidget->setMinimumHeight(qMin((qreal)300, mainWidget->effectiveSizeHint(Qt::MinimumSize).height()));
|
|
}
|
|
|
|
void ExtenderPrivate::setPositionFromDragPosition(const QPointF &pos)
|
|
{
|
|
const qreal ratio = (q->mapFromScene(pos).y()/scrollWidget->size().height());
|
|
|
|
mainWidget->setPos(mainWidget->pos().x(), 30 + (ratio *(scrollWidget->size().height() - mainWidget->size().height() - 30)));
|
|
}
|
|
|
|
ExtenderGroup *ExtenderPrivate::findGroup(const QString &name) const
|
|
{
|
|
foreach (ExtenderItem *item, attachedExtenderItems) {
|
|
if (item->isGroup() && item->name() == name) {
|
|
return qobject_cast<ExtenderGroup*>(item);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void ExtenderPrivate::extenderItemDestroyed(Plasma::ExtenderItem *item)
|
|
{
|
|
if (item && attachedExtenderItems.contains(item)) {
|
|
removeExtenderItem(item);
|
|
} else if (pendingItems.contains(item)) {
|
|
pendingItems.remove(item);
|
|
} else {
|
|
attachedExtenderItems.removeAll(item);
|
|
}
|
|
}
|
|
|
|
void ExtenderPrivate::viewportGeometryChanged(const QRectF &rect)
|
|
{
|
|
if (appearance != Extender::TopDownStacked && appearance != Extender::BottomUpStacked) {
|
|
scrollbarVisible = (rect.height() > mainWidget->boundingRect().height());
|
|
return;
|
|
}
|
|
|
|
bool scroll;
|
|
if (rect.height() >= mainWidget->boundingRect().height()) {
|
|
scroll = false;
|
|
scrollWidget->setContentsMargins(0, 0, 0, 0);
|
|
} else {
|
|
scroll = true;
|
|
if (QApplication::layoutDirection() == Qt::RightToLeft) {
|
|
scrollWidget->setContentsMargins(background->marginSize(RightMargin), 0, 0, 0);
|
|
} else {
|
|
scrollWidget->setContentsMargins(0, 0, background->marginSize(RightMargin), 0);
|
|
}
|
|
}
|
|
|
|
if (scroll != scrollbarVisible) {
|
|
scrollbarVisible = scroll;
|
|
updateBorders();
|
|
}
|
|
}
|
|
|
|
bool Extender::isEmpty() const
|
|
{
|
|
//It's empty if it doesn't have items or has only group that are empty and autohide
|
|
foreach (ExtenderItem *item, d->attachedExtenderItems) {
|
|
if (!item->isGroup()) {
|
|
return false;
|
|
} else {
|
|
//a static_cast here should be safe, it's not the case apparently
|
|
ExtenderGroup *group = qobject_cast<ExtenderGroup *>(item);
|
|
if (group && (!group->autoHide() || group->items().size() > 0)) {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
} // Plasma namespace
|
|
|
|
#include "extender.moc"
|