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plasma-framework/extenders/extenderitem.cpp
Marco Martin 0484b43c3d revert this hardcoded margin, wasn't a so good idea after all 
svn path=/trunk/KDE/kdelibs/; revision=1055823
2009-11-28 20:19:03 +00:00

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/*
* Copyright 2008, 2009 by Rob Scheepmaker <r.scheepmaker@student.utwente.nl>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
#include "extenderitem.h"
#include <QAction>
#include <QApplication>
#include <QBitmap>
#include <QDrag>
#include <QGraphicsSceneResizeEvent>
#include <QGraphicsSceneMouseEvent>
#include <QGraphicsLinearLayout>
#include <QLayout>
#include <QMimeData>
#include <QPainter>
#include <QTimer>
#include <kdebug.h>
#include <kicon.h>
#include <kiconloader.h>
#include "applet.h"
#include "containment.h"
#include "corona.h"
#include "dialog.h"
#include "extender.h"
#include "extendergroup.h"
#include "framesvg.h"
#include "popupapplet.h"
#include "theme.h"
#include "view.h"
#include "widgets/iconwidget.h"
#include "private/applethandle_p.h"
#include "private/extender_p.h"
#include "private/extenderapplet_p.h"
#include "private/extendergroup_p.h"
#include "private/extenderitem_p.h"
#include "private/extenderitemmimedata_p.h"
namespace Plasma
{
ExtenderItem::ExtenderItem(Extender *hostExtender, uint extenderItemId)
: QGraphicsWidget(hostExtender),
d(new ExtenderItemPrivate(this, hostExtender))
{
Q_ASSERT(hostExtender);
//set the extenderId
if (extenderItemId) {
d->extenderItemId = extenderItemId;
ExtenderItemPrivate::s_maxExtenderItemId =
qMax(ExtenderItemPrivate::s_maxExtenderItemId, extenderItemId);
} else {
d->extenderItemId = ++ExtenderItemPrivate::s_maxExtenderItemId;
}
//create the toolbox.
d->toolbox = new QGraphicsWidget(this);
d->toolboxLayout = new QGraphicsLinearLayout(d->toolbox);
d->toolbox->setLayout(d->toolboxLayout);
//create items's configgroup
KConfigGroup cg = hostExtender->d->applet->config("ExtenderItems");
KConfigGroup dg = KConfigGroup(&cg, QString::number(d->extenderItemId));
uint sourceAppletId = dg.readEntry("sourceAppletId", 0);
//check if we're creating a new item or reinstantiating an existing one.
if (!sourceAppletId) {
//The item is new
dg.writeEntry("sourceAppletPluginName", hostExtender->d->applet->pluginName());
dg.writeEntry("sourceAppletId", hostExtender->d->applet->id());
dg.writeEntry("extenderIconName", hostExtender->d->applet->icon());
d->sourceApplet = hostExtender->d->applet;
d->collapseIcon = new IconWidget(KIcon(hostExtender->d->applet->icon()), "", this);
} else {
//The item already exists.
d->name = dg.readEntry("extenderItemName", "");
d->title = dg.readEntry("extenderTitle", "");
setCollapsed(dg.readEntry("isCollapsed", false));
QString iconName = dg.readEntry("extenderIconName", "utilities-desktop-extra");
if (iconName.isEmpty()) {
iconName = "utilities-desktop-extra";
}
d->collapseIcon = new IconWidget(KIcon(iconName), "", this);
//Find the group if it's already there.
QString groupName = dg.readEntry("group", "");
d->group = hostExtender->d->findGroup(groupName);
//Find the sourceapplet.
Corona *corona = hostExtender->d->applet->containment()->corona();
foreach (Containment *containment, corona->containments()) {
foreach (Applet *applet, containment->applets()) {
if (applet->id() == sourceAppletId &&
applet->pluginName() == dg.readEntry("sourceAppletPluginName", "")) {
d->sourceApplet = applet;
}
}
}
}
//make sure we keep monitoring if the source applet still exists, so the return to source icon
//can be hidden if it is removed.
connect(d->sourceApplet, SIGNAL(destroyed()), this, SLOT(sourceAppletRemoved()));
connect(d->collapseIcon, SIGNAL(clicked()), this, SLOT(toggleCollapse()));
//set the extender we want to move to.
setExtender(hostExtender);
//show or hide the return to source icon.
d->updateToolBox();
//set the image paths, image sizes and collapseIcon position.
d->themeChanged();
setAcceptsHoverEvents(true);
connect(Plasma::Theme::defaultTheme(), SIGNAL(themeChanged()), this, SLOT(themeChanged()));
}
ExtenderItem::~ExtenderItem()
{
//make sure the original mousepointer always get's restored.
if (d->mouseOver) {
QApplication::restoreOverrideCursor();
}
delete d;
}
KConfigGroup ExtenderItem::config() const
{
KConfigGroup cg = d->extender->d->applet->config("ExtenderItems");
return KConfigGroup(&cg, QString::number(d->extenderItemId));
}
void ExtenderItem::setTitle(const QString &title)
{
if (d->title != title) {
d->title = title;
config().writeEntry("extenderTitle", title);
update();
}
}
QString ExtenderItem::title() const
{
return d->title;
}
void ExtenderItem::setName(const QString &name)
{
d->name = name;
config().writeEntry("extenderItemName", name);
}
QString ExtenderItem::name() const
{
return d->name;
}
void ExtenderItem::setWidget(QGraphicsItem *widget)
{
if (d->widget) {
d->widget->removeSceneEventFilter(this);
}
if (!widget) {
d->widget = 0;
return;
}
widget->setParentItem(this);
widget->installSceneEventFilter(this);
QSizeF panelSize(QSizeF(size().width() - d->bgLeft - d->bgRight,
d->iconSize + d->dragTop + d->dragBottom));
widget->setPos(QPointF(d->bgLeft + d->dragLeft, panelSize.height() + d->bgTop));
d->widget = widget;
d->updateSizeHints();
}
QGraphicsItem *ExtenderItem::widget() const
{
return d->widget;
}
void ExtenderItem::setIcon(const QIcon &icon)
{
if (d->collapseIcon->icon().isNull() || icon.cacheKey() != d->collapseIcon->icon().cacheKey()) {
d->iconName.clear();
d->collapseIcon->setIcon(icon);
}
}
void ExtenderItem::setIcon(const QString &icon)
{
if (icon != d->iconName) {
d->collapseIcon->setIcon(icon);
d->iconName = icon;
config().writeEntry("extenderIconName", icon);
}
}
QIcon ExtenderItem::icon() const
{
return d->collapseIcon->icon();
}
void ExtenderItem::setExtender(Extender *extender, const QPointF &pos)
{
Q_ASSERT(extender);
//themeChanged() has to now that by now, we're no longer dragging, even though the QDrag has not
//been entirely finished.
d->dragStarted = false;
ExtenderGroup *group = qobject_cast<ExtenderGroup*>(this);
QList<ExtenderItem*> childItems;
if (group) {
childItems = group->items();
}
if (extender == d->extender) {
//We're not moving between extenders, so just insert this item back into the layout.
setParentItem(extender);
extender->d->addExtenderItem(this, pos);
return;
}
//We are switching extender...
//first remove this item from the old extender.
d->extender->d->removeExtenderItem(this);
//move the configuration.
if (d->hostApplet() && (extender != d->extender)) {
KConfigGroup c = extender->d->applet->config("ExtenderItems");
config().reparent(&c);
}
//and notify the applet of the item being detached, after the config has been moved.
emit d->extender->itemDetached(this);
d->extender = extender;
//change parent.
setParentItem(extender);
extender->d->addExtenderItem(this, pos);
//cancel the timer.
if (d->expirationTimer && isDetached()) {
d->expirationTimer->stop();
delete d->expirationTimer;
d->expirationTimer = 0;
}
Corona *corona = qobject_cast<Corona*>(scene());
KConfigGroup extenderItemGroup(corona->config(), "DetachedExtenderItems");
if (isDetached()) {
kDebug() << "detached, adding entry to the global group";
KConfigGroup itemConfig = extenderItemGroup.group(QString::number(d->extenderItemId));
itemConfig.writeEntry("sourceAppletPluginName",
config().readEntry("sourceAppletPluginName", ""));
itemConfig.writeEntry("sourceAppletId",
config().readEntry("sourceAppletId", 0));
itemConfig.writeEntry("extenderItemName",
config().readEntry("extenderItemName", ""));
} else if (extenderItemGroup.hasGroup(QString::number(d->extenderItemId))) {
kDebug() << "no longer detached, removing entry from the global group";
extenderItemGroup.deleteGroup(QString::number(d->extenderItemId));
}
//we might have to enable or disable the returnToSource button.
d->updateToolBox();
//invoke setGroup on all items belonging to this group, to make sure all children move to the
//new extender together with the group.
if (group) {
foreach (ExtenderItem *item, childItems) {
item->setGroup(group);
}
}
}
Extender *ExtenderItem::extender() const
{
return d->extender;
}
void ExtenderItem::setGroup(ExtenderGroup *group)
{
if (isGroup()) {
//nesting extender groups is just insane. I don't think we'd even want to support that.
kWarning() << "Nesting ExtenderGroups is not supported";
return;
}
d->group = group;
if (group) {
config().writeEntry("group", group->name());
//TODO: move to another extender if the group we set is actually detached.
if (group->extender() != extender()) {
kDebug() << "moving to another extender because we're joining a detached group.";
setExtender(group->extender());
}
group->d->addItemToGroup(this);
} else {
config().deleteEntry("group");
}
}
ExtenderGroup *ExtenderItem::group() const
{
return d->group;
}
bool ExtenderItem::isGroup() const
{
return (config().readEntry("isGroup", false));
}
bool ExtenderItem::isCollapsed() const
{
return d->collapsed;
}
void ExtenderItem::setAutoExpireDelay(uint time)
{
if (!time) {
if (d->expirationTimer) {
d->expirationTimer->stop();
delete d->expirationTimer;
d->expirationTimer = 0;
}
return;
}
if (!isDetached()) {
if (!d->expirationTimer) {
d->expirationTimer = new QTimer(this);
connect(d->expirationTimer, SIGNAL(timeout()), this, SLOT(destroy()));
}
d->expirationTimer->stop();
d->expirationTimer->setSingleShot(true);
d->expirationTimer->setInterval(time);
d->expirationTimer->start();
}
}
uint ExtenderItem::autoExpireDelay() const
{
if (d->expirationTimer) {
return d->expirationTimer->interval();
} else {
return 0;
}
}
bool ExtenderItem::isDetached() const
{
if (d->hostApplet()) {
return (d->sourceApplet != d->hostApplet());
} else {
return false;
}
}
void ExtenderItem::addAction(const QString &name, QAction *action)
{
Q_ASSERT(action);
if (d->actionsInOrder.contains(action)) {
return;
}
d->actions.insert(name, action);
d->actionsInOrder.append(action);
connect(action, SIGNAL(changed()), this, SLOT(updateToolBox()));
connect(action, SIGNAL(destroyed(QObject*)), this, SLOT(actionDestroyed(QObject*)));
d->updateToolBox();
}
QAction *ExtenderItem::action(const QString &name) const
{
return d->actions.value(name, 0);
}
void ExtenderItem::showCloseButton()
{
if (d->destroyActionVisibility) {
return;
}
d->destroyActionVisibility = true;
d->updateToolBox();
}
void ExtenderItem::hideCloseButton()
{
if (!d->destroyActionVisibility) {
return;
}
d->destroyActionVisibility = false;
d->updateToolBox();
}
void ExtenderItem::destroy()
{
if (d->dragStarted) {
//avoid being destroyed while we're being dragged.
return;
}
//remove global entry if needed.
Corona *corona = qobject_cast<Corona*>(scene());
KConfigGroup extenderItemGroup(corona->config(), "DetachedExtenderItems");
if (extenderItemGroup.hasGroup(QString::number(d->extenderItemId))) {
extenderItemGroup.deleteGroup(QString::number(d->extenderItemId));
}
d->hostApplet()->config("ExtenderItems").deleteGroup(QString::number(d->extenderItemId));
d->extender->d->removeExtenderItem(this);
emit d->extender->itemDetached(this);
deleteLater();
}
void ExtenderItem::setCollapsed(bool collapsed)
{
config().writeEntry("isCollapsed", collapsed);
d->collapsed = collapsed;
if (d->widget) {
d->widget->setVisible(!collapsed);
d->updateSizeHints();
}
}
void ExtenderItem::returnToSource()
{
if (!d || !d->sourceApplet) {
return;
}
if (d->sourceApplet->d) {
setExtender(d->sourceApplet->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->background->enabledBorders() != (FrameSvg::LeftBorder | FrameSvg::RightBorder) &&
d->background->enabledBorders()) {
//Don't paint if only the left and right borders are enabled, we only use the left and right
//border in this situation to set the correct margins on this item.
d->background->paintFrame(painter, QPointF(0, 0));
}
d->dragger->paintFrame(painter, QPointF(d->bgLeft, d->bgTop));
//We don't need to paint a title if there is no title.
if (d->title.isEmpty()) {
return;
}
//set the font for the title.
Plasma::Theme *theme = Plasma::Theme::defaultTheme();
QFont font = theme->font(Plasma::Theme::DefaultFont);
font.setWeight(QFont::Bold);
//create a pixmap with the title that is faded out at the right side of the titleRect.
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::moveEvent(QGraphicsSceneMoveEvent *event)
{
Q_UNUSED(event)
//not needed anymore, but here for binary compatibility
}
void ExtenderItem::resizeEvent(QGraphicsSceneResizeEvent *event)
{
Q_UNUSED(event)
d->themeChanged();
}
void ExtenderItem::mousePressEvent(QGraphicsSceneMouseEvent *event)
{
if (!(d->dragHandleRect().contains(event->pos())) ||
d->extender->d->applet->immutability() != Plasma::Mutable) {
event->ignore();
return;
}
d->mousePos = event->pos().toPoint();
}
void ExtenderItem::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
{
if ((event->pos().toPoint() - d->mousePos).manhattanLength()
< QApplication::startDragDistance()) {
return;
}
//Start the drag:
d->dragStarted = true;
QPointF curPos = pos();
//remove item from the layout, and add it somewhere off screen so we can render it to a pixmap,
//without other widgets interefing.
d->extender->itemRemovedEvent(this);
Corona *corona = qobject_cast<Corona*>(scene());
corona->addOffscreenWidget(this);
//update the borders, since while dragging, we want all of theme.
d->themeChanged();
//create a view to render the ExtenderItem and it's contents to a pixmap and set up a painter on
//a pixmap.
QGraphicsView view(scene());
QSize screenSize(view.mapFromScene(sceneBoundingRect()).boundingRect().size());
QPixmap pixmap(screenSize);
pixmap.fill(Qt::transparent);
QPainter p(&pixmap);
//the following is necesarry to avoid having an offset when rendering the widget into the
//pixmap.
view.setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
view.setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
view.setFrameShape(QFrame::NoFrame);
//aim the view and render.
view.resize(screenSize);
view.setSceneRect(sceneBoundingRect());
view.render(&p, QRectF(QPointF(0, 0), pixmap.size()), QRect(QPoint(0, 0), screenSize));
//create the necesarry mimedata.
ExtenderItemMimeData *mimeData = new ExtenderItemMimeData();
mimeData->setExtenderItem(this);
//Hide empty internal extender containers when we drag the last item away. Avoids having
//an ugly empty applet on the desktop temporarily.
ExtenderApplet *extenderApplet = qobject_cast<ExtenderApplet*>(d->extender->d->applet);
if (extenderApplet && d->extender->attachedItems().count() < 2 &&
extenderApplet->formFactor() != Plasma::Horizontal &&
extenderApplet->formFactor() != Plasma::Vertical) {
kDebug() << "leaving the internal extender container, so hide the applet and it's handle.";
extenderApplet->hide();
AppletHandle *handle = dynamic_cast<AppletHandle*>(extenderApplet->parentItem());
if (handle) {
handle->hide();
}
}
ExtenderGroup *group = qobject_cast<ExtenderGroup*>(this);
bool collapsedGroup = false;
if (isGroup()) {
collapsedGroup = group->d->collapsed;
group->collapseGroup();
}
//and execute the drag.
QWidget *dragParent = extender()->d->applet->view();
QDrag *drag = new QDrag(dragParent);
drag->setPixmap(pixmap);
drag->setMimeData(mimeData);
drag->setHotSpot(d->mousePos);
Qt::DropAction action = drag->exec();
corona->removeOffscreenWidget(this);
if (!action || !drag->target()) {
//we weren't moved, so reinsert the item in our current layout.
d->extender->itemAddedEvent(this, curPos);
}
if (isGroup() && !collapsedGroup) {
group->expandGroup();
}
d->dragStarted = false;
}
void ExtenderItem::mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event)
{
if (d->titleRect().contains(event->pos())) {
d->toggleCollapse();
}
}
bool ExtenderItem::sceneEventFilter(QGraphicsItem *watched, QEvent *event)
{
if (watched == d->widget && event->type() == QEvent::GraphicsSceneResize) {
d->updateSizeHints();
}
return false;
}
void ExtenderItem::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
{
Q_UNUSED(event)
//not needed anymore, but here for binary compatibility
}
void ExtenderItem::hoverMoveEvent(QGraphicsSceneHoverEvent *event)
{
if (d->titleRect().contains(event->pos()) &&
d->extender->d->applet->immutability() == Plasma::Mutable) {
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;
}
}
QSizeF ExtenderItem::sizeHint(Qt::SizeHint which, const QSizeF &constraint) const
{
switch (which) {
case Qt::MinimumSize:
return d->minimumSize;
case Qt::MaximumSize:
return d->maximumSize;
case Qt::PreferredSize:
default:
return d->preferredSize;
}
}
ExtenderItemPrivate::ExtenderItemPrivate(ExtenderItem *extenderItem, Extender *hostExtender)
: q(extenderItem),
widget(0),
toolbox(0),
extender(hostExtender),
sourceApplet(0),
group(0),
dragger(new FrameSvg(extenderItem)),
background(new FrameSvg(extenderItem)),
collapseIcon(0),
destroyButton(0),
title(QString()),
mouseOver(false),
dragStarted(false),
destroyActionVisibility(false),
collapsed(false),
expirationTimer(0),
iconSize(qreal(0))
{
dragLeft = dragTop = dragRight = dragBottom = 0;
bgLeft = bgTop = bgRight = bgBottom = 0;
}
ExtenderItemPrivate::~ExtenderItemPrivate()
{
delete widget;
widget = 0;
}
//returns a Rect containing the area of the detachable where the draghandle will be drawn.
QRectF ExtenderItemPrivate::dragHandleRect()
{
QSizeF panelSize(QSizeF(q->size().width() - bgLeft - bgRight,
iconSize + dragTop + dragBottom));
return QRectF(QPointF(bgLeft, bgTop), panelSize);
}
QRectF ExtenderItemPrivate::titleRect()
{
return dragHandleRect().adjusted(dragLeft + collapseIcon->size().width() + 1, dragTop,
-toolbox->size().width() - dragRight, -dragBottom);
}
void ExtenderItemPrivate::toggleCollapse()
{
q->setCollapsed(!q->isCollapsed());
}
void ExtenderItemPrivate::updateToolBox()
{
Q_ASSERT(toolbox);
Q_ASSERT(dragger);
Q_ASSERT(toolboxLayout);
//TODO: only delete items that actually have to be deleted, current performance is horrible.
while (toolboxLayout->count()) {
QGraphicsLayoutItem *icon = toolboxLayout->itemAt(0);
QGraphicsWidget *widget = dynamic_cast<QGraphicsWidget*>(icon);
widget->deleteLater();
toolboxLayout->removeAt(0);
}
//add the actions that are actually set to visible.
foreach (QAction *action, actionsInOrder) {
if (action->isVisible()) {
IconWidget *icon = new IconWidget(q);
icon->setAction(action);
QSizeF size = icon->sizeFromIconSize(iconSize);
icon->setMinimumSize(size);
icon->setMaximumSize(size);
if (action != actions.value("close")) {
toolboxLayout->addItem(icon);
}
}
}
//add the returntosource icon if we are detached, and have a source applet.
if (q->isDetached() && sourceApplet) {
IconWidget *returnToSource = new IconWidget(q);
returnToSource->setSvg("widgets/configuration-icons", "return-to-source");
QSizeF size = returnToSource->sizeFromIconSize(iconSize);
returnToSource->setMinimumSize(size);
returnToSource->setMaximumSize(size);
toolboxLayout->addItem(returnToSource);
QObject::connect(returnToSource, SIGNAL(clicked()), q, SLOT(returnToSource()));
}
//add the close icon if desired.
if (destroyActionVisibility) {
destroyButton = new IconWidget(q);
if (!actions.contains("close")) {
QAction *destroyAction = new QAction(q);
actions["close"] = destroyAction;
}
destroyButton->setAction(actions["close"]);
destroyButton->setSvg("widgets/configuration-icons", "close");
QSizeF size = destroyButton->sizeFromIconSize(iconSize);
destroyButton->setMinimumSize(size);
destroyButton->setMaximumSize(size);
toolboxLayout->addItem(destroyButton);
QObject::connect(actions["close"], SIGNAL(triggered()), q, SLOT(destroy()));
} else if (actions.contains("close")) {
QAction *destroyAction = actions["close"];
actions.remove("close");
destroyAction->deleteLater();
}
toolboxLayout->updateGeometry();
//position the toolbox correctly.
QSizeF minimum = toolboxLayout->minimumSize();
toolbox->resize(minimum);
repositionToolbox();
}
void ExtenderItemPrivate::repositionToolbox()
{
QSizeF minimum = toolboxLayout->minimumSize();
toolbox->setPos(q->size().width() - minimum.width() - bgRight,
(dragHandleRect().height()/2) -
(minimum.height()/2) + bgTop);
}
Applet *ExtenderItemPrivate::hostApplet() const
{
if (extender) {
return extender->d->applet;
} else {
return 0;
}
}
void ExtenderItemPrivate::themeChanged()
{
if (dragStarted) {
background->setImagePath("opaque/widgets/extender-background");
} else {
background->setImagePath("widgets/extender-background");
}
if (dragStarted) {
background->setEnabledBorders(FrameSvg::AllBorders);
} else {
background->setEnabledBorders(extender->enabledBordersForItem(q));
}
background->getMargins(bgLeft, bgTop, bgRight, bgBottom);
dragger->setImagePath("widgets/extender-dragger");
//Read the preferred icon size hint, look at the font size, and calculate the desired title bar
//icon height.
dragger->resize();
QSizeF size = dragger->elementSize("hint-preferred-icon-size");
size = size.expandedTo(QSizeF(KIconLoader::SizeSmall,KIconLoader::SizeSmall));
Plasma::Theme *theme = Plasma::Theme::defaultTheme();
QFont font = theme->font(Plasma::Theme::DefaultFont);
QFontMetrics fm(font);
iconSize = qMax(size.height(), (qreal) fm.height());
dragger->getMargins(dragLeft, dragTop, dragRight, dragBottom);
QSizeF panelSize(QSizeF(q->size().width() - bgLeft - bgRight,
iconSize + dragTop + dragBottom));
//resize the collapse icon.
collapseIcon->resize(collapseIcon->sizeFromIconSize(iconSize));
//reposition the collapse icon based on the new margins and size.
collapseIcon->setPos(bgLeft + dragLeft,
panelSize.height()/2 -
collapseIcon->size().height()/2 + bgTop);
//reposition the widget based on the new margins.
if (widget) {
widget->setPos(QPointF(bgLeft + dragLeft, panelSize.height() +
bgTop));
}
//reposition the toolbox.
repositionToolbox();
updateSizeHints();
if (!q->size().isEmpty())
resizeContent(q->size());
}
void ExtenderItemPrivate::sourceAppletRemoved()
{
//the original source applet is removed, set the pointer to 0 and no longer show the return to
//source icon.
sourceApplet = 0;
updateToolBox();
}
void ExtenderItemPrivate::resizeContent(const QSizeF &newSize)
{
qreal width = newSize.width();
qreal height = newSize.height();
//resize the dragger
dragger->resizeFrame(QSizeF(width - bgLeft - bgRight,
iconSize + dragTop + dragBottom));
//resize the applet background
background->resizeFrame(newSize);
//resize the widget
if (widget && widget->isWidget()) {
QSizeF newWidgetSize(width - bgLeft - bgRight - dragLeft - dragRight,
height - dragHandleRect().height() - bgTop - bgBottom -
dragTop - dragBottom);
QGraphicsWidget *graphicsWidget = static_cast<QGraphicsWidget*>(widget);
graphicsWidget->resize(newWidgetSize);
}
//reposition the toolbox.
repositionToolbox();
q->update();
}
void ExtenderItemPrivate::actionDestroyed(QObject *o)
{
QAction *action = static_cast<QAction *>(o);
QMutableHashIterator<QString, QAction *> hit(actions);
while (hit.hasNext()) {
if (hit.next().value() == action) {
hit.remove();
break;
}
}
QMutableListIterator<QAction *> lit(actionsInOrder);
while (lit.hasNext()) {
if (lit.next() == action) {
lit.remove();
break;
}
}
}
void ExtenderItemPrivate::updateSizeHints()
{
if (!widget) {
return;
}
qreal marginWidth = bgLeft + bgRight + dragLeft + dragRight;
qreal marginHeight = bgTop + bgBottom + dragTop + dragBottom;
QSizeF min;
QSizeF pref;
QSizeF max;
if (widget->isWidget()) {
QGraphicsWidget *graphicsWidget = static_cast<QGraphicsWidget*>(widget);
min = graphicsWidget->effectiveSizeHint(Qt::MinimumSize);
pref = graphicsWidget->effectiveSizeHint(Qt::PreferredSize);
max = graphicsWidget->effectiveSizeHint(Qt::MaximumSize);
} else {
min = widget->boundingRect().size();
pref = widget->boundingRect().size();
max = widget->boundingRect().size();
}
if (collapsed) {
preferredSize = QSizeF(pref.width() + marginWidth,
dragHandleRect().height() + marginHeight);
minimumSize = QSizeF(min.width() + marginWidth,
dragHandleRect().height() + marginHeight);
maximumSize = QSizeF(max.width() + marginWidth,
dragHandleRect().height() + marginHeight);
q->setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::Fixed);
if (collapseIcon) {
collapseIcon->setToolTip(i18n("Expand this widget"));
}
} else {
preferredSize = QSizeF(pref.width() + marginWidth,
pref.height() + dragHandleRect().height() + marginHeight);
minimumSize = QSizeF(min.width() + marginWidth,
min.height() + dragHandleRect().height() + marginHeight);
maximumSize = QSizeF(max.width() + marginWidth,
max.height() + dragHandleRect().height() + marginHeight);
//set sane size policies depending on the appearence.
if (extender->d->appearance == Extender::TopDownStacked ||
extender->d->appearance == Extender::BottomUpStacked) {
//used in popups, so fixed make sense.
q->setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::Fixed);
} else if (extender->d->appearance == Extender::NoBorders) {
//on the desktop or panel so take all the space we want.
q->setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::MinimumExpanding);
}
if (collapseIcon) {
collapseIcon->setToolTip(i18n("Collapse this widget"));
}
}
q->updateGeometry();
//FIXME: it should be done from updateGeometry() ??!!??
if (extender && extender->layout()) {
extender->layout()->activate();
}
}
uint ExtenderItemPrivate::s_maxExtenderItemId = 0;
} // namespace Plasma
#include "extenderitem.moc"
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