plasma-framework/private/desktoptoolbox.cpp
Aaron J. Seigo 4f72717a26 cleanups
svn path=/trunk/KDE/kdelibs/; revision=886707
2008-11-19 21:18:12 +00:00

494 lines
14 KiB
C++

/*
* 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 <kcolorscheme.h>
#include <kdebug.h>
#include <plasma/theme.h>
#include <plasma/paintutils.h>
#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());
p->setRenderHints(QPainter::Antialiasing);
p->translate(0.5, 0.5);
//TODO: use Plasma::Theme, and a gradient for the brush!
p->setPen(QPen(Qt::white, 1));
p->setBrush(QColor(0, 0, 0, 160));
QPainterPath path = PaintUtils::roundedRectangle(boundingRect(), 10);
p->drawPath(path);
}
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;
QColor fgColor;
QColor bgColor;
bool hovering : 1;
};
DesktopToolBox::DesktopToolBox(Containment *parent)
: ToolBox(parent),
d(new DesktopToolBoxPrivate)
{
setZValue(10000000);
setFlag(ItemClipsToShape, true);
setFlag(ItemClipsChildrenToShape, false);
setFlag(ItemIgnoresTransformations, true);
setIsMovable(true);
assignColors();
connect(Plasma::Animator::self(), SIGNAL(movementFinished(QGraphicsItem*)),
this, SLOT(toolMoved(QGraphicsItem*)));
connect(this, SIGNAL(toggled()), this, SLOT(toggle()));
connect(Plasma::Theme::defaultTheme(), SIGNAL(themeChanged()),
this, SLOT(assignColors()));
}
DesktopToolBox::~DesktopToolBox()
{
delete d;
}
QRectF DesktopToolBox::boundingRect() const
{
return QRectF(0, 0, size(), size());
}
void DesktopToolBox::assignColors()
{
d->bgColor = Plasma::Theme::defaultTheme()->color(Plasma::Theme::BackgroundColor);
d->fgColor = Plasma::Theme::defaultTheme()->color(Plasma::Theme::TextColor);
}
void DesktopToolBox::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
{
Q_UNUSED(option)
Q_UNUSED(widget)
QPainterPath p = shape();
QPoint iconPos;
QPointF gradientCenter;
const QRectF rect = boundingRect();
const QSize icons = iconSize();
switch (corner()) {
case TopRight:
iconPos = QPoint((int)rect.right() - icons.width() + 2, 2);
gradientCenter = rect.topRight();
break;
case Top:
iconPos = QPoint(rect.center().x() - icons.width() / 2, 2);
gradientCenter = QPoint(rect.center().x(), rect.y());
break;
case TopLeft:
iconPos = QPoint(2, 2);
gradientCenter = rect.topLeft();
break;
case Left:
iconPos = QPoint(2, rect.center().y() - icons.height() / 2);
gradientCenter = QPointF(rect.left(), rect.center().y());
break;
case Right:
iconPos = QPoint((int)rect.right() - icons.width() + 2,
rect.center().y() - icons.height() / 2);
gradientCenter = QPointF(rect.right(), rect.center().y());
break;
case BottomLeft:
iconPos = QPoint(2, rect.bottom() - icons.height() - 2);
gradientCenter = rect.bottomLeft();
break;
case Bottom:
iconPos = QPoint(rect.center().x() - icons.width() / 2,
rect.bottom() - icons.height() - 2);
gradientCenter = QPointF(rect.center().x(), rect.bottom());
break;
case BottomRight:
default:
iconPos = QPoint((int)rect.right() - icons.width() + 2,
(int)rect.bottom() - icons.height() - 2);
gradientCenter = rect.bottomRight();
break;
}
d->bgColor.setAlpha(64);
d->fgColor.setAlpha(64);
QRadialGradient gradient(gradientCenter, size() + d->animCircleFrame);
gradient.setFocalPoint(gradientCenter);
gradient.setColorAt(0, d->bgColor);
gradient.setColorAt(.87, d->bgColor);
gradient.setColorAt(.97, d->fgColor);
d->fgColor.setAlpha(0);
gradient.setColorAt(1, d->fgColor);
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);
}
}
QPainterPath DesktopToolBox::shape() const
{
const QRectF rect = boundingRect();
const int w = rect.width();
const int h = rect.height();
QPainterPath path;
switch (corner()) {
case BottomLeft:
path.moveTo(rect.bottomLeft());
path.arcTo(QRectF(rect.left() - w, rect.top(), w * 2, h * 2), 0, 90);
break;
case BottomRight:
path.moveTo(rect.bottomRight());
path.arcTo(QRectF(rect.left(), rect.top(), w * 2, h * 2), 90, 90);
break;
case TopRight:
path.moveTo(rect.topRight());
path.arcTo(QRectF(rect.left(), rect.top() - h, w * 2, h * 2), 180, 90);
break;
case TopLeft:
path.arcTo(QRectF(rect.left() - w, rect.top() - h, w * 2, h * 2), 270, 90);
break;
default:
path.addRect(rect);
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;
}
// put tools 5px from icon edge
const int iconWidth = 32;
int x;
int y;
switch (corner()) {
case TopRight:
x = (int)boundingRect().right() - iconWidth - 5;
y = (int)boundingRect().top() + 10;
break;
case Top:
x = (int)boundingRect().center().x() - iconWidth;
y = (int)boundingRect().top() + iconWidth + 10;
break;
case TopLeft:
x = (int)boundingRect().left() + iconWidth + 5;
y = (int)boundingRect().top() + 10;
break;
case Left:
x = (int)boundingRect().left() + iconWidth + 5;
y = (int)boundingRect().center().y() - iconWidth;
break;
case Right:
x = (int)boundingRect().right() - 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().right() - iconWidth - 5;
y = (int)boundingRect().bottom() - iconWidth - 5;
break;
}
int startY = y;
// find our theoretical X and Y end coordinates
int maxwidth = 0;
foreach (QGraphicsItem *tool, QGraphicsItem::children()) {
if (tool == d->toolBacker) {
continue;
}
if (tool->isEnabled()) {
//kDebug() << tool << "is enabled";
y += 5;
maxwidth = qMax(static_cast<int>(tool->boundingRect().width()), maxwidth);
y += static_cast<int>(tool->boundingRect().height());
}
}
if (corner() == TopRight || corner() == Right || corner() == BottomRight) {
x -= maxwidth;
}
y += 5;
// the rect the tools back should have
QRectF backerRect = QRectF(QPointF(x, startY), QSizeF(maxwidth + 10, y - startY));
//kDebug() << "starting at" << x << startY;
// now check that is actually fits within the parent's boundaries
backerRect = mapToParent(backerRect).boundingRect();
QSizeF parentSize = parentWidget()->size();
if (backerRect.x() < 5) {
backerRect.moveLeft(5);
} else if (backerRect.right() > parentSize.width() - 5) {
backerRect.moveRight(parentSize.width() - 5);
}
if (backerRect.y() < 5) {
backerRect.moveTop(5);
} else if (backerRect.bottom() > parentSize.height() - 5) {
backerRect.moveBottom(parentSize.height() - 5);
}
// re-map our starting points back to our coordinate system
backerRect = mapFromParent(backerRect).boundingRect();
x = backerRect.x() + 5;
y = backerRect.y();
// now move the items
Plasma::Animator *animdriver = Plasma::Animator::self();
foreach (QGraphicsItem *tool, QGraphicsItem::children()) {
if (tool == d->toolBacker) {
continue;
}
if (tool->isEnabled()) {
//kDebug() << tool << "is enabled";
y += 5;
//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());
} else if (tool->isVisible()) {
// disabled, but visible, so hide it!
const int height = static_cast<int>(tool->boundingRect().height());
animdriver->moveItem(tool, Plasma::Animator::SlideOutMovement,
toolPosition(height));
}
}
if (!d->toolBacker) {
d->toolBacker = new EmptyGraphicsItem(this);
}
d->toolBacker->setRect(backerRect);
d->toolBacker->show();
if (d->animCircleId) {
animdriver->stopCustomAnimation(d->animCircleId);
}
setShowing(true);
}
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);
if (d->toolBacker) {
d->toolBacker->hide();
}
}
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"