plasma-framework/desktoptoolbox.cpp

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/*
* Copyright 2007 by Aaron Seigo <aseigo@kde.org>
* Copyright 2008 by Marco Martin <notmart@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Library General Public License as
* published by the Free Software Foundation; either version 2, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details
*
* You should have received a copy of the GNU Library General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "desktoptoolbox_p.h"
#include <QGraphicsSceneHoverEvent>
#include <QPainter>
#include <QRadialGradient>
#include <QGraphicsView>
#include <plasma/theme.h>
#include <KColorScheme>
#include <KDebug>
#include <plasma/applet.h>
namespace Plasma
{
class EmptyGraphicsItem : public QGraphicsItem
{
public:
EmptyGraphicsItem(QGraphicsItem *parent)
: QGraphicsItem(parent)
{
setAcceptsHoverEvents(true);
}
QRectF boundingRect() const
{
return QRectF(QPointF(0, 0), m_rect.size());
}
QRectF rect() const
{
return m_rect;
}
void setRect(const QRectF &rect)
{
//kDebug() << "setting rect to" << rect;
prepareGeometryChange();
m_rect = rect;
setPos(rect.topLeft());
}
void paint(QPainter * p, const QStyleOptionGraphicsItem*, QWidget*)
{
Q_UNUSED(p)
//p->setPen(Qt::red);
//p->drawRect(boundingRect());
}
private:
QRectF m_rect;
};
// used with QGrahphicsItem::setData
static const int ToolName = 7001;
class DesktopToolBox::Private
{
public:
Private()
: icon("plasma"),
toolBacker(0),
animCircleId(0),
animHighlightId(0),
animCircleFrame(0),
animHighlightFrame(0),
hovering(0)
{}
KIcon icon;
EmptyGraphicsItem *toolBacker;
int animCircleId;
int animHighlightId;
qreal animCircleFrame;
qreal animHighlightFrame;
bool hovering : 1;
};
DesktopToolBox::DesktopToolBox(QGraphicsItem *parent)
: ToolBox(parent),
d(new Private)
{
connect(Plasma::Animator::self(), SIGNAL(movementFinished(QGraphicsItem*)), this, SLOT(toolMoved(QGraphicsItem*)));
setZValue(10000000);
setFlag(ItemClipsToShape, true);
setFlag(ItemClipsChildrenToShape, false);
setFlag(ItemIgnoresTransformations, true);
}
DesktopToolBox::~DesktopToolBox()
{
delete d;
}
QRectF DesktopToolBox::boundingRect() const
{
return QRectF(0, 0, -size()*2, size()*2);
}
void DesktopToolBox::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
{
Q_UNUSED(option)
Q_UNUSED(widget)
painter->save();
painter->translate(boundingRect().topLeft());
QColor color1 = KColorScheme(QPalette::Active, KColorScheme::Window,
Plasma::Theme::defaultTheme()->colorScheme()).background().color();
color1.setAlpha(64);
QColor color2 = KColorScheme(QPalette::Active, KColorScheme::Window,
Plasma::Theme::defaultTheme()->colorScheme()).foreground().color();
color2.setAlpha(64);
QPainterPath p = shape();
QRadialGradient gradient(boundingRect().topLeft(), size() + d->animCircleFrame);
gradient.setFocalPoint(boundingRect().topLeft());
gradient.setColorAt(0, color1);
gradient.setColorAt(.87, color1);
gradient.setColorAt(.97, color2);
color2.setAlpha(0);
gradient.setColorAt(1, color2);
painter->save();
painter->setPen(Qt::NoPen);
painter->setRenderHint(QPainter::Antialiasing, true);
painter->setBrush(gradient);
painter->drawPath(p);
painter->restore();
const qreal progress = d->animHighlightFrame;
if (progress <= 0.9) {
d->icon.paint(painter, QRect(QPoint((int)boundingRect().left() - iconSize().width() + 2, 2), iconSize()), Qt::AlignCenter, QIcon::Disabled, QIcon::Off);
}
if (progress > 0.1) {
painter->save();
painter->setOpacity(progress);
d->icon.paint(painter, QRect(QPoint((int)boundingRect().left() - iconSize().width() + 2, 2), iconSize()));
painter->restore();
}
painter->restore();
}
QPainterPath DesktopToolBox::shape() const
{
QPainterPath path;
int toolSize = size() + (int)d->animCircleFrame;
path.arcTo(QRectF(boundingRect().left() - toolSize, boundingRect().top() - toolSize, toolSize*2, toolSize*2), 180, 90);
return path;
}
void DesktopToolBox::hoverEnterEvent(QGraphicsSceneHoverEvent *event)
{
if (showing() || d->hovering) {
QGraphicsItem::hoverEnterEvent(event);
return;
}
Plasma::Animator* animdriver = Plasma::Animator::self();
if (d->animHighlightId) {
animdriver->stopCustomAnimation(d->animHighlightId);
}
d->hovering = true;
d->animHighlightId = animdriver->customAnimation(10, 240, Plasma::Animator::EaseInCurve, this, "animateHighlight");
QGraphicsItem::hoverEnterEvent(event);
}
void DesktopToolBox::showToolBox()
{
if (showing()) {
return;
}
int maxwidth = 0;
foreach (QGraphicsItem* tool, QGraphicsItem::children()) {
if (!tool->isEnabled()) {
continue;
}
maxwidth = qMax(static_cast<int>(tool->boundingRect().width()), maxwidth);
}
// put tools 5px from icon edge
const int iconWidth = 32;
int x = (int)boundingRect().left() - maxwidth - iconWidth - 5;
int y = (int)boundingRect().top() + 5;
Plasma::Animator* animdriver = Plasma::Animator::self();
foreach (QGraphicsItem* tool, QGraphicsItem::children()) {
if (tool == d->toolBacker) {
continue;
}
if (!tool->isEnabled()) {
if (tool->isVisible()) {
const int height = static_cast<int>(tool->boundingRect().height());
animdriver->moveItem(tool, Plasma::Animator::SlideOutMovement, QPoint(size() * 2, -height));
}
continue;
}
//kDebug() << "let's show and move" << tool << tool->boundingRect();
tool->show();
animdriver->moveItem(tool, Plasma::Animator::SlideInMovement, QPoint(x, y));
//x += 0;
y += static_cast<int>(tool->boundingRect().height()) + 5;
}
if (!d->toolBacker) {
d->toolBacker = new EmptyGraphicsItem(this);
}
d->toolBacker->setRect(QRectF(QPointF(x, 0), QSizeF(maxwidth, y - 10)));
d->toolBacker->show();
if (d->animCircleId) {
animdriver->stopCustomAnimation(d->animCircleId);
}
setShowing(true);
// TODO: 10 and 200 shouldn't be hardcoded here. There needs to be a way to
// match whatever the time is that moveItem() takes. Same in hoverLeaveEvent().
d->animCircleId = animdriver->customAnimation(10, 240, Plasma::Animator::EaseInCurve, this, "animateCircle");
}
void DesktopToolBox::hoverLeaveEvent(QGraphicsSceneHoverEvent *event)
{
//kDebug() << event->pos() << event->scenePos() << d->toolBacker->rect().contains(event->scenePos().toPoint());
if (! d->hovering) {
QGraphicsItem::hoverLeaveEvent(event);
return;
}
hideToolBox();
Plasma::Animator* animdriver = Plasma::Animator::self();
if (d->animHighlightId) {
animdriver->stopCustomAnimation(d->animHighlightId);
}
d->hovering = false;
d->animHighlightId = animdriver->customAnimation(10, 240, Plasma::Animator::EaseOutCurve, this, "animateHighlight");
QGraphicsItem::hoverLeaveEvent(event);
}
void DesktopToolBox::hideToolBox()
{
if (!showing()) {
return;
}
int x = size() * 2;
int y = 0;
Plasma::Animator* animdriver = Plasma::Animator::self();
foreach (QGraphicsItem* tool, QGraphicsItem::children()) {
if (tool == d->toolBacker) {
continue;
}
const int height = static_cast<int>(tool->boundingRect().height());
animdriver->moveItem(tool, Plasma::Animator::SlideOutMovement, QPoint(x, y-height));
}
if (d->animCircleId) {
animdriver->stopCustomAnimation(d->animCircleId);
}
setShowing(false);
d->animCircleId = animdriver->customAnimation(10, 240, Plasma::Animator::EaseOutCurve, this, "animateCircle");
if (d->toolBacker) {
d->toolBacker->hide();
}
}
void DesktopToolBox::animateCircle(qreal progress)
{
if (showing()) {
d->animCircleFrame = size() * progress;
} else {
d->animCircleFrame = size() * (1.0 - progress);
}
if (progress >= 1) {
d->animCircleId = 0;
}
update();
}
void DesktopToolBox::animateHighlight(qreal progress)
{
if (d->hovering) {
d->animHighlightFrame = progress;
} else {
d->animHighlightFrame = 1.0 - progress;
}
if (progress >= 1) {
d->animHighlightId = 0;
}
update();
}
void DesktopToolBox::toolMoved(QGraphicsItem *item)
{
//kDebug() << "geometry is now " << static_cast<Plasma::Widget*>(item)->geometry();
if (!showing() &&
QGraphicsItem::children().indexOf(static_cast<Plasma::Applet*>(item)) != -1) {
item->hide();
}
}
void DesktopToolBox::toggle()
{
if (showing()) {
hideToolBox();
} else {
showToolBox();
}
}
} // plasma namespace
#include "desktoptoolbox_p.moc"