plasma-framework/private/toolbox.cpp
Alexis Ménard d4ca38b20f This almost fix the performance issue when zooming out on plasma-desktop.
We don't need to call prepareGeometryChange if the geometry will not
change, this mistake end up with a new paint event that will paint for
nothing.

This should be backported into 4.3

svn path=/trunk/KDE/kdelibs/; revision=997763
2009-07-16 13:09:19 +00:00

542 lines
15 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 "toolbox_p.h"
#include <QAction>
#include <QApplication>
#include <QGraphicsSceneHoverEvent>
#include <QGraphicsView>
#include <QPainter>
#include <QRadialGradient>
#include <kcolorscheme.h>
#include <kconfiggroup.h>
#include <kiconloader.h>
#include <kdebug.h>
#include "corona.h"
#include "theme.h"
#include "widgets/iconwidget.h"
namespace Plasma
{
class ToolBoxPrivate
{
public:
ToolBoxPrivate(Containment *c)
: containment(c),
size(50),
iconSize(KIconLoader::SizeMedium, KIconLoader::SizeMedium),
corner(ToolBox::TopRight),
hidden(false),
showing(false),
movable(false),
toolbar(false),
dragging(false),
userMoved(false)
{}
Containment *containment;
int size;
QSize iconSize;
ToolBox::Corner corner;
QPoint dragStartRelative;
QTransform viewTransform;
bool hidden : 1;
bool showing : 1;
bool movable : 1;
bool toolbar : 1;
bool dragging : 1;
bool userMoved : 1;
};
ToolBox::ToolBox(Containment *parent)
: QGraphicsItem(parent),
d(new ToolBoxPrivate(parent))
{
d->userMoved = false;
setAcceptsHoverEvents(true);
}
ToolBox::~ToolBox()
{
delete d;
}
QPoint ToolBox::toolPosition(int toolHeight)
{
switch (d->corner) {
case TopRight:
return QPoint(boundingRect().width(), -toolHeight);
case Top:
return QPoint((int)boundingRect().center().x() - boundingRect().width(), -toolHeight);
case TopLeft:
return QPoint(-boundingRect().width(), -toolHeight);
case Left:
return QPoint(-boundingRect().width(), (int)boundingRect().center().y() - boundingRect().height());
case Right:
return QPoint(boundingRect().width(), (int)boundingRect().center().y() - boundingRect().height());
case BottomLeft:
return QPoint(-boundingRect().width(), toolHeight);
case Bottom:
return QPoint((int)boundingRect().center().x() - d->iconSize.width(), toolHeight);
case BottomRight:
default:
return QPoint(boundingRect().width(), toolHeight);
}
}
void ToolBox::addTool(QAction *action)
{
if (!action) {
return;
}
Plasma::IconWidget *tool = new Plasma::IconWidget(this);
tool->setTextBackgroundColor(QColor());
tool->setAction(action);
tool->setDrawBackground(true);
tool->setOrientation(Qt::Horizontal);
tool->resize(tool->sizeFromIconSize(KIconLoader::SizeSmallMedium));
tool->hide();
const int height = static_cast<int>(tool->boundingRect().height());
tool->setPos(toolPosition(height));
tool->setZValue(zValue() + 10);
tool->setToolTip(action->text());
//make enabled/disabled tools appear/disappear instantly
connect(tool, SIGNAL(changed()), this, SLOT(updateToolBox()));
connect(action, SIGNAL(triggered(bool)), this, SLOT(toolTriggered(bool)));
//kDebug() << "added tool" << action->text() << (QGraphicsItem*)tool;
}
void ToolBox::updateToolBox()
{
Plasma::IconWidget *tool = qobject_cast<Plasma::IconWidget *>(sender());
if (tool && tool->action() == 0) {
tool->deleteLater();
tool = 0;
}
if (d->showing) {
d->showing = false;
showToolBox();
} else if (tool && !tool->isEnabled()) {
tool->hide();
}
}
void ToolBox::toolTriggered(bool)
{
}
void ToolBox::removeTool(QAction *action)
{
foreach (QGraphicsItem *child, QGraphicsItem::children()) {
//kDebug() << "checking tool" << child << child->data(ToolName);
Plasma::IconWidget *tool = dynamic_cast<Plasma::IconWidget*>(child);
if (tool && tool->action() == action) {
//kDebug() << "tool found!";
tool->deleteLater();
break;
}
}
}
int ToolBox::size() const
{
return d->size;
}
void ToolBox::setSize(const int newSize)
{
d->size = newSize;
}
QSize ToolBox::iconSize() const
{
return d->iconSize;
}
void ToolBox::setIconSize(const QSize newSize)
{
d->iconSize = newSize;
}
bool ToolBox::showing() const
{
return d->showing;
}
void ToolBox::setShowing(const bool show)
{
d->showing = show;
}
void ToolBox::setCorner(const Corner corner)
{
d->corner = corner;
}
ToolBox::Corner ToolBox::corner() const
{
return d->corner;
}
void ToolBox::mousePressEvent(QGraphicsSceneMouseEvent *event)
{
event->accept();
// set grab position relative to toolbox
d->dragStartRelative = mapToParent(event->pos()).toPoint() - pos().toPoint();
}
void ToolBox::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
{
if (!d->movable || (!d->dragging && boundingRect().contains(event->pos())) || isToolbar()) {
return;
}
d->dragging = true;
d->userMoved = true;
const QPoint newPos = mapToParent(event->pos()).toPoint();
const QPoint curPos = pos().toPoint();
const int h = abs((int)boundingRect().height());
const int w = abs((int)boundingRect().width());
const int areaWidth = parentWidget()->size().width();
const int areaHeight = parentWidget()->size().height();
int x = curPos.x();
int y = curPos.y();
// jump to the nearest desktop border
int distanceToLeft = newPos.x() - d->dragStartRelative.x();
int distanceToRight = areaWidth - w - distanceToLeft;
int distanceToTop = newPos.y() - d->dragStartRelative.y();
int distanceToBottom = areaHeight - h - distanceToTop;
int distancetoHorizontalMiddle = qAbs(newPos.x() - areaWidth/2);
int distancetoVerticalMiddle = qAbs(newPos.y() - areaHeight/2);
// decide which border is the nearest
if (distanceToLeft < distanceToTop && distanceToLeft < distanceToRight &&
distanceToLeft < distanceToBottom ) {
x = 0;
y = (newPos.y() - d->dragStartRelative.y());
}
else if (distanceToRight < distanceToTop && distanceToRight < distanceToLeft &&
distanceToRight < distanceToBottom) {
x = areaWidth - w;
y = (newPos.y() - d->dragStartRelative.y());
}
else if (distanceToTop < distanceToLeft && distanceToTop < distanceToRight &&
distanceToTop < distanceToBottom ) {
y = 0;
x = (newPos.x() - d->dragStartRelative.x());
}
else if (distanceToBottom < distanceToLeft && distanceToBottom < distanceToRight &&
distanceToBottom < distanceToTop) {
y = areaHeight - h;
x = (newPos.x() - d->dragStartRelative.x());
}
if (distancetoHorizontalMiddle < 10) {
x = areaWidth/2 - d->dragStartRelative.x();
} else if (distancetoVerticalMiddle < 10) {
y = areaHeight/2 - d->dragStartRelative.y();
}
//kDebug() << "distances from borders" << (newPos - d->dragStartRelative) << distanceToLeft << distanceToRight << distanceToTop << distanceToBottom << "=>" << x << y;
/*
if (y == 0 || y + h >= areaHeight) {
x = curPos.x() + (newPos.x() - d->dragStart.x());
if (x < 0) {
x = 0;
} else if (x + w > areaWidth) {
x = areaWidth - w;
}
}
//kDebug() << x << w << areaWidth;
if (x == 0 || x + w >= areaWidth) {
//kDebug() << "moving along the y axis" << curPos << newPos << d->dragStart;
y = curPos.y() + (newPos.y() - d->dragStart.y());
if (y < 0) {
y = 0;
} else if (y + h > areaHeight) {
y = areaHeight - h;
}
}
*/
x = qBound(0, x, areaWidth - w);
y = qBound(0, y, areaHeight - h);
Corner newCorner = d->corner;
if (x == 0) {
if (y == 0) {
newCorner = TopLeft;
} else if (y + h >= areaHeight) {
newCorner = BottomLeft;
} else {
newCorner = Left;
}
} else if (y == 0) {
if (x + w >= areaWidth) {
newCorner = TopRight;
} else {
newCorner = Top;
}
} else if (x + w >= areaWidth) {
if (y + h >= areaHeight) {
newCorner = BottomRight;
} else {
newCorner = Right;
}
} else {
newCorner = Bottom;
}
if (newCorner != d->corner) {
prepareGeometryChange();
d->corner = newCorner;
}
setPos(x, y);
}
void ToolBox::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
{
if (!d->dragging && boundingRect().contains(event->pos())) {
emit toggled();
}
d->dragging = false;
KConfigGroup cg(d->containment->config());
save(cg);
}
bool ToolBox::isMovable() const
{
return d->movable;
}
void ToolBox::setIsMovable(bool movable)
{
d->movable = movable;
}
bool ToolBox::isToolbar() const
{
return d->toolbar;
}
void ToolBox::setIsToolbar(bool toolbar)
{
d->toolbar = toolbar;
}
QTransform ToolBox::viewTransform() const
{
return d->viewTransform;
}
void ToolBox::setViewTransform(const QTransform &transform)
{
if (transform.isScaling()) {
d->toolbar = true;
showToolBox();
} else {
d->toolbar = false;
if (d->viewTransform != transform) {
hideToolBox();
}
}
d->viewTransform = transform;
}
void ToolBox::save(KConfigGroup &cg) const
{
if (!d->movable) {
return;
}
KConfigGroup group(&cg, "ToolBox");
if (!d->userMoved) {
group.deleteGroup();
return;
}
int offset = 0;
if (d->corner == ToolBox::Left ||
d->corner == ToolBox::Right) {
offset = y();
} else if (d->corner == ToolBox::Top ||
d->corner == ToolBox::Bottom) {
offset = x();
}
group.writeEntry("corner", int(d->corner));
group.writeEntry("offset", offset);
}
void ToolBox::load(const KConfigGroup &containmentGroup)
{
if (!d->movable) {
return;
}
KConfigGroup group;
if (containmentGroup.isValid()) {
group = containmentGroup;
} else {
group = d->containment->config();
}
group = KConfigGroup(&group, "ToolBox");
if (!group.hasKey("corner")) {
return;
}
d->userMoved = true;
d->corner = Corner(group.readEntry("corner", int(d->corner)));
int offset = group.readEntry("offset", 0);
switch (d->corner) {
case ToolBox::TopLeft:
setPos(0, 0);
break;
case ToolBox::Top:
setPos(offset, 0);
break;
case ToolBox::TopRight:
setPos(d->containment->size().width() - boundingRect().width(), 0);
break;
case ToolBox::Right:
setPos(d->containment->size().width() - boundingRect().width(), offset);
break;
case ToolBox::BottomRight:
setPos(d->containment->size().width() - boundingRect().width(), d->containment->size().height() - boundingRect().height());
break;
case ToolBox::Bottom:
setPos(offset, d->containment->size().height() - boundingRect().height());
break;
case ToolBox::BottomLeft:
setPos(0, d->containment->size().height() - boundingRect().height());
break;
case ToolBox::Left:
setPos(0, offset);
break;
}
//kDebug() << "marked as user moved" << pos()
// << (d->containment->containmentType() == Containment::PanelContainment);
}
void ToolBox::reposition()
{
if (d->userMoved) {
//FIXME: adjust for situations like changing of the available space
load();
return;
}
if (d->containment->containmentType() == Containment::PanelContainment ||
d->containment->containmentType() == Containment::CustomPanelContainment) {
QRectF rect = boundingRect();
if (d->containment->formFactor() == Vertical) {
setCorner(ToolBox::Bottom);
setPos(d->containment->geometry().width() / 2 - rect.width() / 2,
d->containment->geometry().height() - rect.height());
} else {
//defaulting to Horizontal right now
if (QApplication::layoutDirection() == Qt::RightToLeft) {
setPos(d->containment->geometry().left(),
d->containment->geometry().height() / 2 - rect.height() / 2);
setCorner(ToolBox::Left);
} else {
setPos(d->containment->geometry().width() - rect.width(),
d->containment->geometry().height() / 2 - rect.height() / 2);
setCorner(ToolBox::Right);
}
}
//kDebug() << "got ourselves a panel containment, moving to" << pos();
} else if (d->containment->corona()) {
//kDebug() << "desktop";
int screen = d->containment->screen();
QRectF avail = d->containment->geometry();
QRectF screenGeom = avail;
if (screen > -1 && screen < d->containment->corona()->numScreens()) {
avail = d->containment->corona()->availableScreenRegion(screen).boundingRect();
screenGeom = d->containment->corona()->screenGeometry(screen);
avail.translate(-screenGeom.topLeft());
}
// Transform to the containment's coordinate system.
screenGeom.moveTo(0, 0);
if (!d->containment->view() || !d->containment->view()->transform().isScaling()) {
if (QApplication::layoutDirection() == Qt::RightToLeft) {
if (avail.top() > screenGeom.top()) {
setPos(avail.topLeft() - QPoint(0, avail.top()));
setCorner(ToolBox::Left);
} else if (avail.left() > screenGeom.left()) {
setPos(avail.topLeft() - QPoint(boundingRect().width(), 0));
setCorner(ToolBox::Top);
} else {
setPos(avail.topLeft());
setCorner(ToolBox::TopLeft);
}
} else {
if (avail.top() > screenGeom.top()) {
setPos(avail.topRight() - QPoint(boundingRect().width(), -avail.top()));
setCorner(ToolBox::Right);
} else if (avail.right() < screenGeom.right()) {
setPos(avail.topRight() - QPoint(boundingRect().width(), 0));
setCorner(ToolBox::Top);
} else {
setPos(avail.topRight() - QPoint(boundingRect().width(), 0));
setCorner(ToolBox::TopRight);
}
}
} else {
if (QApplication::layoutDirection() == Qt::RightToLeft) {
setPos(d->containment->mapFromScene(QPointF(d->containment->geometry().topLeft())));
setCorner(ToolBox::TopLeft);
} else {
setPos(d->containment->mapFromScene(QPointF(d->containment->geometry().topRight())));
setCorner(ToolBox::TopRight);
}
}
}
}
} // plasma namespace
#include "toolbox_p.moc"