plasma-framework/private/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 <plasma/paintutils.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 DesktopToolBoxPrivate
{
public:
DesktopToolBoxPrivate()
: 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;
QRect shapeRect;
bool hovering : 1;
};
DesktopToolBox::DesktopToolBox(QGraphicsItem *parent)
: ToolBox(parent),
d(new DesktopToolBoxPrivate)
{
connect(Plasma::Animator::self(), SIGNAL(movementFinished(QGraphicsItem*)),
this, SLOT(toolMoved(QGraphicsItem*)));
connect(this, SIGNAL(toggled()), this, SLOT(toggle()));
setZValue(10000000);
setFlag(ItemClipsToShape, true);
setFlag(ItemClipsChildrenToShape, false);
setFlag(ItemIgnoresTransformations, true);
}
DesktopToolBox::~DesktopToolBox()
{
delete d;
}
QRectF DesktopToolBox::boundingRect() const
{
Corner c = corner();
qreal width;
qreal height;
if (c == Left || c == Right) {
height = size() * 4;
} else {
height = size() * 2;
}
if (c == Bottom || c == BottomRight || c == BottomLeft) {
height = -height;
}
if (c == Top || c == Bottom) {
width = size() * 4;
} else {
width = size() * 2;
}
if (c == Right || c == TopRight || c == BottomRight) {
width = -width;
}
return QRectF(0, 0, width, height);
}
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();
QPoint iconPos;
QPointF gradientCenter;
switch (corner()) {
case TopRight:
iconPos = QPoint((int)boundingRect().left() - iconSize().width() + 2, 2);
gradientCenter = boundingRect().topLeft();
break;
case Top:
iconPos = QPoint(boundingRect().center().x() - iconSize().width() / 2, 2);
gradientCenter = QPoint(boundingRect().center().x(), boundingRect().y());
break;
case TopLeft:
iconPos = QPoint(2, 2);
gradientCenter = boundingRect().topLeft();
break;
case Left:
iconPos = QPoint(2, boundingRect().center().y() - iconSize().height() / 2);
gradientCenter = QPointF(boundingRect().left(), boundingRect().center().y());
break;
case Right:
iconPos = QPoint((int)boundingRect().left() - iconSize().width() + 2,
boundingRect().center().y() - iconSize().height() / 2);
gradientCenter = QPointF(boundingRect().left(), boundingRect().center().y());
break;
case BottomLeft:
iconPos = QPoint(2, boundingRect().top() - iconSize().height() - 2);
gradientCenter = boundingRect().topLeft();
break;
case Bottom:
iconPos = QPoint(boundingRect().center().x() - iconSize().width() / 2,
boundingRect().top() - iconSize().height() - 2);
gradientCenter = QPointF(boundingRect().center().x(), boundingRect().top());
break;
case BottomRight:
default:
iconPos = QPoint((int)boundingRect().left() - iconSize().width() - 2,
(int)boundingRect().top() - iconSize().height() - 2);
gradientCenter = boundingRect().topLeft();
break;
}
QRadialGradient gradient(gradientCenter, size() + d->animCircleFrame);
gradient.setFocalPoint(gradientCenter);
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 (qFuzzyCompare(qreal(1.0), progress)) {
d->icon.paint(painter, QRect(iconPos, iconSize()));
} else if (qFuzzyCompare(qreal(1.0), 1 + progress)) {
d->icon.paint(painter, QRect(iconPos, iconSize()),
Qt::AlignCenter, QIcon::Disabled, QIcon::Off);
} else {
QPixmap disabled = d->icon.pixmap(iconSize(), QIcon::Disabled, QIcon::Off);
QPixmap enabled = d->icon.pixmap(iconSize());
QPixmap result = PaintUtils::transition(
d->icon.pixmap(iconSize(), QIcon::Disabled, QIcon::Off),
d->icon.pixmap(iconSize()), progress);
painter->drawPixmap(QRect(iconPos, iconSize()), result);
}
painter->restore();
}
QPainterPath DesktopToolBox::shape() const
{
QPainterPath path;
int toolSize = size() + (int)d->animCircleFrame;
switch (corner()) {
case TopRight:
path.arcTo(QRectF(boundingRect().left() - toolSize, boundingRect().top() - toolSize,
toolSize * 2, toolSize * 2), 180, 90);
break;
case Top:
path.arcTo(QRectF(boundingRect().center().x() - toolSize,
boundingRect().top() - toolSize,
toolSize * 2, toolSize * 2), 180, 180);
break;
case TopLeft:
path.arcTo(QRectF(boundingRect().left() - toolSize,
boundingRect().top() - toolSize,
toolSize * 2, toolSize * 2), 270, 90);
break;
case Left:
path.arcTo(QRectF(boundingRect().left() - toolSize,
boundingRect().center().y() - toolSize,
toolSize * 2, toolSize * 2), 270, 180);
break;
case Right:
path.arcTo(QRectF(boundingRect().left() - toolSize,
boundingRect().center().y() - toolSize,
toolSize * 2, toolSize * 2), 90, 180);
break;
case BottomLeft:
path.arcTo(QRectF(boundingRect().left() - toolSize,
boundingRect().top() - toolSize,
toolSize * 2, toolSize * 2), 0, 90);
break;
case Bottom:
path.arcTo(QRectF(boundingRect().center().x() - toolSize,
boundingRect().top() - toolSize,
toolSize * 2, toolSize * 2), 0, 180);
break;
case BottomRight:
default:
path.arcTo(QRectF(boundingRect().left() - toolSize,
boundingRect().top() - toolSize,
toolSize * 2, toolSize * 2), 90, 90);
break;
}
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 y;
switch (corner()) {
case TopRight:
x = (int)boundingRect().left() - maxwidth - iconWidth - 5;
y = (int)boundingRect().top() + 5;
break;
case Top:
x = (int)boundingRect().center().x() - iconWidth;
y = (int)boundingRect().top() + iconWidth + 5;
break;
case TopLeft:
x = (int)boundingRect().left() + iconWidth + 5;
y = (int)boundingRect().top() + 5;
break;
case Left:
x = (int)boundingRect().left() + iconWidth + 5;
y = (int)boundingRect().center().y() - iconWidth;
break;
case Right:
x = (int)boundingRect().left() - maxwidth - iconWidth - 5;
y = (int)boundingRect().center().y() - iconWidth;
break;
case BottomLeft:
x = (int)boundingRect().left() + iconWidth + 5;
y = (int)boundingRect().bottom() - 5;
break;
case Bottom:
x = (int)boundingRect().center().x() - iconWidth;
y = (int)boundingRect().bottom() - iconWidth - 5;
break;
case BottomRight:
default:
x = (int)boundingRect().left() - maxwidth - iconWidth - 5;
y = (int)boundingRect().bottom() - iconWidth - 5;
break;
}
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,
toolPosition(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;
}
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, toolPosition(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"