902 lines
29 KiB
C++
902 lines
29 KiB
C++
/*
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* Copyright 2008 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 "extenderitem.h"
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#include <QApplication>
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#include <QAction>
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#include <QGraphicsSceneResizeEvent>
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#include <QGraphicsSceneMouseEvent>
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#include <QGraphicsLinearLayout>
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#include <QLayout>
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#include <QPainter>
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#include <QTimer>
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#include <KDebug>
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#include <KIcon>
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#include <KWindowSystem>
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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 "dialog.h"
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#include "extender.h"
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#include "panelsvg.h"
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#include "popupapplet.h"
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#include "theme.h"
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#include "view.h"
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#include "private/applet_p.h"
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#include "private/extender_p.h"
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namespace Plasma
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{
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class ExtenderItemPrivate
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{
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public:
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ExtenderItemPrivate(ExtenderItem *extenderItem, Extender *hostExtender)
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: q(extenderItem),
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widget(0),
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toplevel(0),
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previousTargetExtender(0),
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extender(hostExtender),
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title(QString()),
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sourceAppletId(hostExtender->d->applet->id()),
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mousePressed(false),
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expirationTimer(0)
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{
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}
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~ExtenderItemPrivate()
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{
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delete toplevel;
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}
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/**
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* @return a Rect containing the area of the detachable where the draghandle can be drawn.
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*/
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QRectF dragHandleRect()
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{
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qreal left, top, right, bottom;
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dragger->getMargins(left, top, right, bottom);
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QRectF rect(0, 0, q->size().width(),
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dragger->elementSize("hint-preferred-icon-size").height() + top + bottom);
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return rect;
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}
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QRectF titleRect()
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{
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qreal left, top, right, bottom;
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dragger->getMargins(left, top, right, bottom);
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return dragHandleRect().adjusted(left + collapseIcon->size().width() + 1, top,
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-toolbox->size().width(), -bottom);
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}
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//XXX kinda duplicated from applethandle.
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//returns true if the applet overlaps with a different view then the current one.
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bool leaveCurrentView(const QRect &rect)
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{
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if ((q->sceneBoundingRect().left() < 0)) {
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//always leaveCurrentView when the item is in a Plasma::Dialog which can easy be
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//seen by checking if it is in topleft quadrant and it's not just there because it's
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//being viewed by the toplevel view.
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return true;
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}
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foreach (QWidget *widget, QApplication::topLevelWidgets()) {
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if (widget->geometry().intersects(rect) && widget->isVisible() && widget != toplevel) {
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//is this widget a plasma view, a different view then our current one,
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//AND not a dashboardview?
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QGraphicsView *v = qobject_cast<QGraphicsView*>(widget);
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QGraphicsView *currentV = 0;
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if (hostApplet()) {
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currentV = qobject_cast<QGraphicsView*>(hostApplet()->containment()->view());
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}
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if (v && v != currentV) {
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return true;
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}
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}
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}
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return false;
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}
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QRect screenRect() {
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return hostApplet()->containment()->view()
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->mapFromScene(q->sceneBoundingRect()).boundingRect();
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}
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void toggleCollapse() {
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q->setCollapsed(!q->isCollapsed());
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}
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void updateToolBox() {
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if (toolbox && dragger && toolboxLayout) {
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//clean the layout.
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uint iconHeight = dragger->elementSize("hint-preferred-icon-size").height();
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while (toolboxLayout->count()) {
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QGraphicsLayoutItem *icon = toolboxLayout->itemAt(0);
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QGraphicsWidget *widget = dynamic_cast<QGraphicsWidget*>(icon);
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widget->deleteLater();
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toolboxLayout->removeAt(0);
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}
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//add the actions that are actually set to visible.
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foreach (QAction *action, actions) {
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if (action->isVisible()) {
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Icon *icon = new Icon(q);
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icon->setAction(action);
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QSizeF iconSize = icon->sizeFromIconSize(iconHeight);
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icon->setMinimumSize(iconSize);
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icon->setMaximumSize(iconSize);
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toolboxLayout->addItem(icon);
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}
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}
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toolboxLayout->updateGeometry();
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qreal left, top, right, bottom;
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dragger->getMargins(left, top, right, bottom);
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//position the toolbox correctly.
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QSizeF minimum = toolboxLayout->minimumSize();
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toolbox->resize(minimum);
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toolbox->setPos(q->size().width() - minimum.width(),
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((dragger->size().height() + top + bottom)/2) -
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(minimum.height()/2));
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toolbox->update();
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}
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}
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//TODO: something like this as static function in corona might be a good idea.
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QPointF scenePosFromScreenPos(const QPoint &pos) const
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{
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//get the stacking order of the toplevel windows and remove the toplevel view that's
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//only here while dragging, since we're not interested in finding that.
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QList<WId> order = KWindowSystem::stackingOrder();
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if (toplevel) {
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order.removeOne(toplevel->winId());
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}
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QGraphicsView *found = 0;
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foreach (QWidget *w, QApplication::topLevelWidgets()) {
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QGraphicsView *v = 0;
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//first check if we're over a Dialog.
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Dialog *dialog = qobject_cast<Dialog*>(w);
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if (dialog) {
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if (dialog->isVisible() && dialog->geometry().contains(pos)) {
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v = qobject_cast<QGraphicsView*>(dialog->layout()->itemAt(0)->widget());
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if (v) {
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return v->mapToScene(v->mapFromGlobal(pos));
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}
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}
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} else {
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v = qobject_cast<QGraphicsView *>(w);
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}
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//else check if it is a QGV:
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if (v && w->isVisible() && w->geometry().contains(pos)) {
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if (found && order.contains(found->winId())) {
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if (order.indexOf(found->winId()) < order.indexOf(v->winId())) {
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found = v;
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}
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} else {
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found = v;
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}
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}
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}
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Q_ASSERT(found);
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return found->mapToScene(found->mapFromGlobal(pos));
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}
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Applet *hostApplet() const
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{
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if (extender) {
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return extender->d->applet;
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} else {
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return 0;
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}
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}
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ExtenderItem *q;
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QGraphicsWidget *widget;
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QGraphicsWidget *toolbox;
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QGraphicsLinearLayout *toolboxLayout;
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QGraphicsView *toplevel;
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Extender *previousTargetExtender;
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Extender *extender;
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Applet *sourceApplet;
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KConfigGroup config;
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PanelSvg *dragger;
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PanelSvg *appletBackground;
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Icon *collapseIcon;
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QAction *returnAction;
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QMap<QString, QAction*> actions;
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QString title;
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QString name;
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uint sourceAppletId;
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uint extenderItemId;
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QPointF deltaScene;
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QPoint mousePos;
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bool mousePressed;
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bool mouseOver;
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QTimer *expirationTimer;
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static uint s_maxExtenderItemId;
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};
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uint ExtenderItemPrivate::s_maxExtenderItemId = 0;
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ExtenderItem::ExtenderItem(Extender *hostExtender, uint extenderItemId)
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: QGraphicsWidget(hostExtender),
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d(new ExtenderItemPrivate(this, hostExtender))
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{
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Q_ASSERT(hostExtender);
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//set the extenderId
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if (extenderItemId) {
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d->extenderItemId = extenderItemId;
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ExtenderItemPrivate::s_maxExtenderItemId =
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qMax(ExtenderItemPrivate::s_maxExtenderItemId, extenderItemId);
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} else {
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d->extenderItemId = ++ExtenderItemPrivate::s_maxExtenderItemId;
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}
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d->sourceApplet = hostExtender->d->applet;
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//create items's configgroup
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if (hostExtender->d->applet) {
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KConfigGroup cg = hostExtender->d->applet->config("ExtenderItems");
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KConfigGroup dg = KConfigGroup(&cg, QString::number(d->extenderItemId));
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if (!dg.readEntry("sourceAppletId", 0)) {
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//The item is new
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dg.writeEntry("sourceAppletPluginName", hostExtender->d->applet->pluginName());
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dg.writeEntry("sourceAppletId", hostExtender->d->applet->id());
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d->sourceAppletId = hostExtender->d->applet->id();
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d->sourceApplet = hostExtender->d->applet;
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} else {
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//The item allready exists.
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d->name = dg.readEntry("extenderItemName", "");
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d->sourceAppletId = dg.readEntry("sourceAppletId", 0);
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//Set the sourceapplet.
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Corona *corona = hostExtender->d->applet->containment()->corona();
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foreach (Containment *containment, corona->containments()) {
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foreach (Applet *applet, containment->applets()) {
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if (applet->id() == d->sourceAppletId &&
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applet->pluginName() == dg.readEntry("sourceAppletPluginName", "")) {
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d->sourceApplet = applet;
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}
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}
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}
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}
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}
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//create the dragger and standard applet background.
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d->dragger = new PanelSvg(this);
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d->dragger->setImagePath("widgets/dragger");
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d->appletBackground = new PanelSvg(this);
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d->appletBackground->setImagePath("widgets/background");
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d->appletBackground->setEnabledBorders(0);
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//create the toolbox.
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d->toolbox = new QGraphicsWidget(this);
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d->toolboxLayout = new QGraphicsLinearLayout(d->toolbox);
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d->toolbox->setLayout(d->toolboxLayout);
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//allow the theme to set the size of the icon.
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//TODO: discuss with others to determine details of the theming implementation. I don't really
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//like this approach, but it works...
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QSizeF iconSize = d->dragger->elementSize("hint-preferred-icon-size");
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qreal left, top, right, bottom;
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d->dragger->getMargins(left, top, right, bottom);
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//create the collapse/applet icon.
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d->collapseIcon = new Icon(KIcon(hostExtender->d->applet->icon()), "", this);
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d->collapseIcon->resize(d->collapseIcon->sizeFromIconSize(iconSize.height()));
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d->collapseIcon->setPos(left, (d->dragger->size().height() + top + bottom)/2 -
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d->collapseIcon->size().height()/2);
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connect(d->collapseIcon, SIGNAL(clicked()), this, SLOT(toggleCollapse()));
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//Add the return to source action.
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d->returnAction = new QAction(this);
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d->returnAction->setIcon(KIcon("returntosource"));
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d->returnAction->setEnabled(true);
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d->returnAction->setVisible(true);
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connect(d->returnAction, SIGNAL(triggered()), this, SLOT(moveBackToSource()));
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addAction("returntosource", d->returnAction);
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//set the extender we want to move to.
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setExtender(hostExtender);
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setCollapsed(false); //sets the size hints.
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setAcceptHoverEvents(true);
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d->updateToolBox();
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updateGeometry();
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}
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ExtenderItem::~ExtenderItem()
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{
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delete d;
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}
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KConfigGroup ExtenderItem::config() const
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{
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KConfigGroup cg = extender()->d->applet->config("ExtenderItems");
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return KConfigGroup(&cg, QString::number(d->extenderItemId));
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}
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void ExtenderItem::setTitle(const QString &title)
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{
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d->title = title;
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update();
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}
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QString ExtenderItem::title() const
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{
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return d->title;
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}
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void ExtenderItem::setName(const QString &name)
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{
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d->name = name;
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config().writeEntry("extenderItemName", name);
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}
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QString ExtenderItem::name() const
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{
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return d->name;
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}
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void ExtenderItem::setWidget(QGraphicsWidget *widget)
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{
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qreal left, top, right, bottom;
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d->dragger->getMargins(left, top, right, bottom);
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widget->setParentItem(this);
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widget->setPos(QPointF(left, d->dragHandleRect().height() + bottom));
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d->widget = widget;
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setCollapsed(isCollapsed()); //updates the size hints.
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}
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QGraphicsWidget *ExtenderItem::widget() const
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{
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return d->widget;
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}
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void ExtenderItem::setIcon(const QIcon &icon)
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{
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d->collapseIcon->setIcon(icon);
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}
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void ExtenderItem::setIcon(const QString &icon)
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{
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d->collapseIcon->setIcon(icon);
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}
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QIcon ExtenderItem::icon() const
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{
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return d->collapseIcon->icon();
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}
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void ExtenderItem::setExtender(Extender *extender, const QPointF &pos)
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{
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//We are switching extender...
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//first remove this item from the old extender.
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if (d->extender) {
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d->extender->d->removeExtenderItem(this);
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emit d->extender->itemDetached(this);
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//collapse the popupapplet if the last item is removed.
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if (!d->extender->attachedItems().count()) {
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PopupApplet *applet = qobject_cast<PopupApplet*>(d->extender->d->applet);
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if (applet) {
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applet->hidePopup();
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}
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}
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}
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//move the configuration.
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if (d->hostApplet() && (extender != d->extender)) {
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KConfigGroup c = extender->d->applet->config("ExtenderItems");
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config().reparent(&c);
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}
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d->extender = extender;
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//change parent.
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setParentItem(extender);
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extender->d->addExtenderItem(this, pos);
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//cancel the timer.
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if (d->expirationTimer && isDetached()) {
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d->expirationTimer->stop();
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delete d->expirationTimer;
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d->expirationTimer = 0;
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}
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}
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Extender *ExtenderItem::extender() const
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{
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return d->extender;
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}
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bool ExtenderItem::isCollapsed() const
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{
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if (!d->widget) {
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return true;
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} else {
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return !d->widget->isVisible();
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}
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}
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void ExtenderItem::setAutoExpireDelay(uint time)
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{
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if (!time) {
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if (d->expirationTimer) {
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d->expirationTimer->stop();
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delete d->expirationTimer;
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d->expirationTimer = 0;
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}
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return;
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}
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if (!isDetached()) {
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if (!d->expirationTimer) {
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d->expirationTimer = new QTimer(this);
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connect(d->expirationTimer, SIGNAL(timeout()), this, SLOT(destroy()));
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}
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d->expirationTimer->stop();
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d->expirationTimer->setSingleShot(true);
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d->expirationTimer->setInterval(time);
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d->expirationTimer->start();
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}
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}
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bool ExtenderItem::autoExpireDelay() const
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{
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if (d->expirationTimer) {
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return d->expirationTimer->interval();
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} else {
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return 0;
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}
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}
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bool ExtenderItem::isDetached() const
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{
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if (d->hostApplet()) {
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return (sourceAppletId() != d->hostApplet()->id());
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} else {
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return false;
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}
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}
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void ExtenderItem::addAction(const QString &name, QAction *action)
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{
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Q_ASSERT(action);
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d->actions[name] = action;
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connect(action, SIGNAL(changed()), this, SLOT(updateToolBox()));
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d->updateToolBox();
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}
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QAction *ExtenderItem::action(const QString &name) const
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{
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if (d->actions.contains(name)) {
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return d->actions[name];
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} else {
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return 0;
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}
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}
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uint ExtenderItem::sourceAppletId() const
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{
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return d->sourceAppletId;
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}
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void ExtenderItem::destroy()
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{
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if (d->mousePressed) {
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//avoid being destroyed while we're being dragged.
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return;
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}
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d->hostApplet()->config("ExtenderItems").deleteGroup(QString::number(d->extenderItemId));
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if (d->extender) {
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d->extender->d->removeExtenderItem(this);
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}
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deleteLater();
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}
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void ExtenderItem::setCollapsed(bool collapsed)
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{
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if (!d->widget) {
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setPreferredSize(QSizeF(200, d->dragHandleRect().height()));
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setMinimumSize(QSizeF(0, d->dragHandleRect().height()));
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//FIXME: wasn't there some sort of QWIDGETMAXSIZE thingy?
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setMaximumSize(QSizeF(1000, d->dragHandleRect().height()));
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setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
|
|
updateGeometry();
|
|
return;
|
|
}
|
|
|
|
qreal left, top, right, bottom;
|
|
d->dragger->getMargins(left, top, right, bottom);
|
|
|
|
d->widget->setVisible(!collapsed);
|
|
|
|
if (collapsed) {
|
|
setPreferredSize(QSizeF(d->widget->preferredWidth() + left + right,
|
|
d->dragHandleRect().height()));
|
|
setMinimumSize(QSizeF(d->widget->minimumWidth() + left + right,
|
|
d->dragHandleRect().height()));
|
|
setMaximumSize(QSizeF(d->widget->maximumWidth() + left + right,
|
|
d->dragHandleRect().height()));
|
|
setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
|
|
//FIXME: why don't tooltips work?
|
|
if (d->collapseIcon) {
|
|
d->collapseIcon->setToolTip(i18n("Expand this widget"));
|
|
}
|
|
} else {
|
|
setPreferredSize(QSizeF(d->widget->preferredWidth() + left + right,
|
|
d->widget->preferredHeight() +
|
|
d->dragHandleRect().height() + top + bottom));
|
|
setMinimumSize( QSizeF(d->widget->minimumWidth() + left + right,
|
|
d->widget->minimumHeight() +
|
|
d->dragHandleRect().height() + top + bottom));
|
|
setMaximumSize( QSizeF(d->widget->maximumWidth() + left + right,
|
|
d->widget->maximumHeight() +
|
|
d->dragHandleRect().height() + top + bottom));
|
|
|
|
setSizePolicy(d->widget->sizePolicy());
|
|
if (d->collapseIcon) {
|
|
d->collapseIcon->setToolTip(i18n("Collapse this widget"));
|
|
}
|
|
}
|
|
|
|
updateGeometry();
|
|
|
|
if (d->extender) {
|
|
d->extender->d->adjustSizeHints();
|
|
}
|
|
}
|
|
|
|
void ExtenderItem::moveBackToSource()
|
|
{
|
|
if (!d->sourceApplet) {
|
|
return;
|
|
}
|
|
setExtender(d->sourceApplet->d->extender);
|
|
}
|
|
|
|
void ExtenderItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option,
|
|
QWidget *widget)
|
|
{
|
|
Q_UNUSED(option);
|
|
Q_UNUSED(widget);
|
|
|
|
painter->setRenderHint(QPainter::TextAntialiasing, true);
|
|
painter->setRenderHint(QPainter::Antialiasing, true);
|
|
|
|
if (d->mousePressed) {
|
|
//only paint the standard applet background when dragging the thing around.
|
|
d->appletBackground->paintPanel(painter); //, QRectF(QPointF(0,0), size()));
|
|
}
|
|
d->dragger->paintPanel(painter); //, d->dragHandleRect());
|
|
|
|
//draw the title.
|
|
Plasma::Theme *theme = Plasma::Theme::defaultTheme();
|
|
QFont font = theme->font(Plasma::Theme::DefaultFont);
|
|
font.setPointSize(font.pointSize() - 2);
|
|
font.setWeight(QFont::Bold);
|
|
|
|
//XXX: duplicated from windowtaskitem.
|
|
//TODO: hmm, create something generic for this... there's probably more stuff that wants to have
|
|
//this functionality
|
|
QRectF rect = QRectF(d->titleRect().width() - 30, 0, 30, d->titleRect().height());
|
|
|
|
QPixmap pixmap(d->titleRect().size().toSize());
|
|
pixmap.fill(Qt::transparent);
|
|
|
|
QPainter p(&pixmap);
|
|
p.setPen(theme->color(Plasma::Theme::TextColor));
|
|
p.setFont(font);
|
|
p.drawText(QRectF(QPointF(0, 0), d->titleRect().size()),
|
|
Qt::TextSingleLine | Qt::AlignVCenter | Qt::AlignLeft,
|
|
d->title);
|
|
|
|
// Create the alpha gradient for the fade out effect
|
|
QLinearGradient alphaGradient(0, 0, 1, 0);
|
|
alphaGradient.setCoordinateMode(QGradient::ObjectBoundingMode);
|
|
//TODO: correct handling of right to left text.
|
|
alphaGradient.setColorAt(0, QColor(0, 0, 0, 255));
|
|
alphaGradient.setColorAt(1, QColor(0, 0, 0, 0));
|
|
|
|
p.setCompositionMode(QPainter::CompositionMode_DestinationIn);
|
|
p.fillRect(rect, alphaGradient);
|
|
|
|
p.end();
|
|
|
|
painter->drawPixmap(d->titleRect().topLeft(), pixmap);
|
|
}
|
|
|
|
void ExtenderItem::resizeEvent(QGraphicsSceneResizeEvent *event)
|
|
{
|
|
qreal left, top, right, bottom;
|
|
d->dragger->getMargins(left, top, right, bottom);
|
|
|
|
//resize the dragger
|
|
QSizeF newDraggerSize = event->newSize();
|
|
newDraggerSize.setHeight(d->dragger->elementSize("hint-preferred-icon-size").height() + top + bottom);
|
|
d->dragger->resizePanel(newDraggerSize);
|
|
|
|
//resize the applet background
|
|
d->appletBackground->resizePanel(event->newSize());
|
|
|
|
//resize the widget
|
|
if (d->widget) {
|
|
QSizeF newWidgetSize = event->newSize();
|
|
newWidgetSize.setHeight(newWidgetSize.height() - d->dragger->size().height() - top - bottom);
|
|
newWidgetSize.setWidth(newWidgetSize.width() - left - right);
|
|
d->widget->resize(newWidgetSize);
|
|
}
|
|
|
|
d->updateToolBox();
|
|
}
|
|
|
|
void ExtenderItem::mousePressEvent(QGraphicsSceneMouseEvent *event)
|
|
{
|
|
kDebug() << "the mouse pressed yeah yeah yeah!";
|
|
if (!(d->dragHandleRect().contains(event->pos()))) {
|
|
event->ignore();
|
|
return;
|
|
}
|
|
|
|
d->mousePressed = true;
|
|
d->deltaScene = pos();
|
|
|
|
Applet *parentApplet = d->hostApplet();
|
|
|
|
d->mousePos = event->pos().toPoint();
|
|
|
|
parentApplet->raise();
|
|
setZValue(parentApplet->zValue());
|
|
|
|
if (d->extender) {
|
|
d->extender->itemHoverMoveEvent(this, d->extender->mapFromScene(d->scenePosFromScreenPos(event->screenPos())));
|
|
}
|
|
|
|
d->extender->d->removeExtenderItem(this);
|
|
|
|
QApplication::setOverrideCursor(Qt::ClosedHandCursor);
|
|
}
|
|
|
|
void ExtenderItem::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
|
|
{
|
|
if (!d->mousePressed) {
|
|
return;
|
|
}
|
|
|
|
//keep track of the movement in scene coordinates. we use this to set the position of the
|
|
//applet when remaining in the current view.
|
|
d->deltaScene += event->scenePos() - event->lastScenePos();
|
|
|
|
//set a rect in screencoordinates so we can check when we need to move to a toplevel
|
|
//view.
|
|
QRect screenRect = QRect();
|
|
screenRect.setTopLeft(event->screenPos() - d->mousePos);
|
|
screenRect.setSize(d->screenRect().size());
|
|
|
|
Corona *corona = d->hostApplet()->containment()->corona();
|
|
|
|
if (d->leaveCurrentView(screenRect)) {
|
|
//we're moving the applet to a toplevel view, so place it somewhere out of sight
|
|
//first: in the topleft quadrant.
|
|
|
|
if (!d->toplevel) {
|
|
//XXX duplication from applethandle
|
|
//create a toplevel view and aim it at the applet.
|
|
d->toplevel = new QGraphicsView(corona, 0);
|
|
|
|
corona->addOffscreenWidget(this);
|
|
|
|
d->toplevel->setWindowFlags(Qt::ToolTip | Qt::FramelessWindowHint
|
|
| Qt::WindowStaysOnTopHint);
|
|
d->toplevel->setFrameShape(QFrame::NoFrame);
|
|
d->toplevel->resize(screenRect.size());
|
|
d->toplevel->setSceneRect(sceneBoundingRect());
|
|
d->toplevel->centerOn(this);
|
|
|
|
//We might have to scale the view, because we might be zoomed out.
|
|
qreal scale = screenRect.width() / boundingRect().width();
|
|
d->toplevel->scale(scale, scale);
|
|
|
|
d->toplevel->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
|
|
d->toplevel->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
|
|
|
|
d->toplevel->update();
|
|
d->toplevel->show();
|
|
}
|
|
|
|
//move the toplevel view.
|
|
d->toplevel->setSceneRect(sceneBoundingRect());
|
|
d->toplevel->setGeometry(screenRect);
|
|
update();
|
|
} else {
|
|
corona->removeOffscreenWidget(this);
|
|
setParentItem(d->hostApplet());
|
|
setPos(d->deltaScene);
|
|
|
|
//remove the toplevel view.
|
|
if (d->toplevel) {
|
|
delete d->toplevel;
|
|
d->toplevel = 0;
|
|
}
|
|
}
|
|
|
|
//let's insert spacers in applets we're hovering over for some usefull visual feedback.
|
|
//check which view we're hovering over and use that information to get the mouse
|
|
//position in scene coordinates (event->scenePos won't work, since it doesn't take in
|
|
//consideration that you're leaving the current view).
|
|
QPointF mousePos = d->scenePosFromScreenPos(event->screenPos());
|
|
|
|
//find the extender we're hovering over.
|
|
Extender *targetExtender = 0;
|
|
foreach (Containment *containment, corona->containments()) {
|
|
foreach (Applet *applet, containment->applets()) {
|
|
if (applet->extender() && (applet->sceneBoundingRect().contains(mousePos)
|
|
|| applet->extender()->sceneBoundingRect().contains(mousePos))) {
|
|
targetExtender = applet->extender();
|
|
|
|
//check if we're hovering over an popupapplet, and open it up in case it does.
|
|
PopupApplet *popupApplet = qobject_cast<PopupApplet*>(applet);
|
|
if (popupApplet && (applet->formFactor() == Plasma::Horizontal ||
|
|
applet->formFactor() == Plasma::Vertical)) {
|
|
popupApplet->showPopup();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
//remove any previous spacers.
|
|
if (targetExtender != d->previousTargetExtender) {
|
|
if (d->previousTargetExtender) {
|
|
d->previousTargetExtender->itemHoverLeaveEvent(this);
|
|
}
|
|
d->previousTargetExtender = targetExtender;
|
|
if (targetExtender) {
|
|
targetExtender->itemHoverEnterEvent(this);
|
|
}
|
|
}
|
|
|
|
//insert a spacer if the applet accepts detachables.
|
|
if (targetExtender) {
|
|
if (targetExtender->sceneBoundingRect().contains(mousePos)) {
|
|
targetExtender->itemHoverMoveEvent(this, targetExtender->mapFromScene(mousePos));
|
|
}
|
|
}
|
|
}
|
|
|
|
void ExtenderItem::hoverMoveEvent(QGraphicsSceneHoverEvent *event)
|
|
{
|
|
if (d->titleRect().contains(event->pos())) {
|
|
if (!d->mouseOver) {
|
|
QApplication::setOverrideCursor(Qt::OpenHandCursor);
|
|
d->mouseOver = true;
|
|
}
|
|
} else {
|
|
if (d->mouseOver) {
|
|
QApplication::restoreOverrideCursor();
|
|
d->mouseOver = false;
|
|
}
|
|
}
|
|
}
|
|
|
|
void ExtenderItem::hoverLeaveEvent(QGraphicsSceneHoverEvent *event)
|
|
{
|
|
Q_UNUSED(event);
|
|
|
|
if (d->mouseOver) {
|
|
QApplication::restoreOverrideCursor();
|
|
d->mouseOver = false;
|
|
}
|
|
}
|
|
|
|
void ExtenderItem::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
|
|
{
|
|
if (d->mousePressed) {
|
|
d->mousePressed = false;
|
|
|
|
//remove the toplevel view
|
|
if (d->toplevel) {
|
|
delete d->toplevel;
|
|
d->toplevel = 0;
|
|
}
|
|
|
|
//let's insert spacers in applets we're hovering over for some usefull visual feedback.
|
|
//check which view we're hovering over and use that information to get the mouse
|
|
//position in scene coordinates (event->scenePos won't work, since it doesn't take in
|
|
//consideration that you're leaving the current view).
|
|
QPointF mousePos = d->scenePosFromScreenPos(event->screenPos());
|
|
|
|
//find the extender we're hovering over.
|
|
Extender *targetExtender = 0;
|
|
Corona *corona = qobject_cast<Corona*>(scene());
|
|
|
|
corona->removeOffscreenWidget(this);
|
|
|
|
foreach (Containment *containment, corona->containments()) {
|
|
foreach (Applet *applet, containment->applets()) {
|
|
if (applet->extender() && (applet->sceneBoundingRect().contains(mousePos)
|
|
|| applet->extender()->sceneBoundingRect().contains(mousePos))) {
|
|
targetExtender = applet->extender();
|
|
}
|
|
}
|
|
}
|
|
|
|
//are we hovering over an applet that accepts extender items?
|
|
if (targetExtender) {
|
|
if (targetExtender->sceneBoundingRect().contains(mousePos)) {
|
|
setExtender(targetExtender, targetExtender->mapFromScene(mousePos));
|
|
} else {
|
|
setExtender(targetExtender);
|
|
}
|
|
} else {
|
|
//apparently, it is not, so instantiate a new ExtenderApplet.
|
|
//TODO: maybe we alow the user to choose a default extenderapplet.
|
|
kDebug() << "Instantiate a new ExtenderApplet";
|
|
mousePos = d->scenePosFromScreenPos(event->screenPos() - d->mousePos);
|
|
foreach (Containment *containment, corona->containments()) {
|
|
if (containment->sceneBoundingRect().contains(mousePos)) {
|
|
Applet *applet = containment->addApplet("internal:extender",
|
|
QVariantList(),
|
|
QRectF(mousePos, size()));
|
|
setExtender(applet->extender());
|
|
}
|
|
}
|
|
}
|
|
|
|
QApplication::restoreOverrideCursor();
|
|
}
|
|
}
|
|
|
|
} // namespace Plasma
|
|
|
|
#include "extenderitem.moc"
|