plasma-framework/view.cpp

223 lines
4.8 KiB
C++

/*
* Copyright 2007 Aaron Seigo <aseigo@kde.org>
*
* 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 "view.h"
#include <KGlobal>
#include <KWindowSystem>
#include "corona.h"
#include "containment.h"
using namespace Plasma;
namespace Plasma
{
class View::Private
{
public:
Private(int uniqueId)
: drawWallpaper(true),
desktop(-1),
containment(0)
{
if (uniqueId == 0) {
viewId = ++s_maxViewId;
} else if (uniqueId > s_maxViewId) {
s_maxViewId = uniqueId;
viewId = uniqueId;
}
}
~Private()
{
}
bool drawWallpaper;
int desktop;
int viewId;
Plasma::Containment *containment;
static int s_maxViewId;
};
int View::Private::s_maxViewId(0);
View::View(Containment *containment, QWidget *parent)
: QGraphicsView(parent),
d(new Private(0))
{
Q_ASSERT(containment);
initGraphicsView();
setScene(containment->scene());
setContainment(containment);
}
View::View(Containment *containment, int viewId, QWidget *parent)
: QGraphicsView(parent),
d(new Private(viewId))
{
Q_ASSERT(containment);
initGraphicsView();
setScene(containment->scene());
setContainment(containment);
}
void View::initGraphicsView()
{
setFrameShape(QFrame::NoFrame);
setAutoFillBackground(true);
setDragMode(QGraphicsView::NoDrag);
//setCacheMode(QGraphicsView::CacheBackground);
setInteractive(true);
setAcceptDrops(true);
setAlignment(Qt::AlignLeft | Qt::AlignTop);
setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
}
View::~View()
{
delete d;
}
void View::setScreen(int screen)
{
if (screen > -1) {
Corona *corona = qobject_cast<Corona*>(scene());
if (!corona) {
return;
}
Containment *containment = corona->containmentForScreen(screen);
if (containment) {
d->containment = 0; //so that we don't end up on the old containment's screen
setContainment(containment);
}
}
}
int View::screen() const
{
if (d->containment) {
return d->containment->screen();
}
return -1;
}
void View::setDesktop(int desktop)
{
// -1 == All desktops
if (desktop < -1 || desktop > KWindowSystem::numberOfDesktops() - 1) {
desktop = -1;
}
d->desktop = desktop;
}
int View::desktop() const
{
return d->desktop;
}
int View::effectiveDesktop() const
{
return d->desktop > -1 ? d->desktop : KWindowSystem::currentDesktop();
}
void View::setContainment(Containment *containment)
{
if (containment == d->containment) {
return;
}
int screen = -1;
if (d->containment) {
disconnect(d->containment, SIGNAL(geometryChanged()), this, SLOT(updateSceneRect()));
screen = d->containment->screen();
}
d->containment = containment;
if (! containment) {
return;
}
if (screen > -1) {
containment->setScreen(screen);
}
if (containment->screen() > -1 && d->desktop < -1) {
// we want to set it to "all desktops" if we get ownership of
// a screen but don't have a desktop explicitly set
d->desktop = -1;
}
updateSceneRect();
connect(containment, SIGNAL(geometryChanged()), this, SLOT(updateSceneRect()));
}
Containment* View::containment() const
{
return d->containment;
}
KConfigGroup View::config() const
{
KConfigGroup views(KGlobal::config(), "PlasmaViews");
return KConfigGroup(&views, QString::number(d->viewId));
}
int View::id() const
{
return d->viewId;
}
void View::setDrawWallpaper(bool draw)
{
d->drawWallpaper = draw;
}
bool View::drawWallpaper() const
{
return d->drawWallpaper;
}
void View::updateSceneRect()
{
if (!d->containment) {
return;
}
kDebug() << "!!!!!!!!!!!!!!!!! setting the scene rect to"
<< d->containment->sceneBoundingRect()
<< "associated screen is" << d->containment->screen();
emit sceneRectAboutToChange();
setSceneRect(d->containment->sceneBoundingRect());
emit sceneRectChanged();
}
} // namespace Plasma
#include "view.moc"