kwin/kcmkwin/kwinscreenedges/screenpreviewwidget.cpp
Vlad Zahorodnii 1fb9f6f13a Switch to SPDX license markers
The main advantage of SPDX license identifiers over the traditional
license headers is that it's more difficult to overlook inappropriate
licenses for kwin, for example GPL 3. We also don't have to copy a
lot of boilerplate text.

In order to create this change, I ran licensedigger -r -c from the
toplevel source directory.
2020-08-07 19:57:56 +00:00

150 lines
3.5 KiB
C++

/* This file is part of the KDE libraries
SPDX-FileCopyrightText: 2009 Marco Martin <notmart@gmail.com>
SPDX-License-Identifier: LGPL-2.0-or-later
*/
#include "screenpreviewwidget.h"
#include <QResizeEvent>
#include <QPaintEvent>
#include <QPainter>
#include <QDebug>
#include <QMimeData>
#include <Plasma/FrameSvg>
#include <kurlmimedata.h>
class ScreenPreviewWidgetPrivate
{
public:
ScreenPreviewWidgetPrivate(ScreenPreviewWidget *screen)
: q(screen),
ratio(1)
{}
~ScreenPreviewWidgetPrivate()
{}
void updateRect(const QRectF& rect)
{
q->update(rect.toRect());
}
void updateScreenGraphics()
{
int bottomElements = screenGraphics->elementSize("base").height() + screenGraphics->marginSize(Plasma::Types::BottomMargin);
QRect bounds(QPoint(0,0), QSize(q->size().width(), q->height() - bottomElements));
QSize monitorSize(q->size().width(), q->size().width()/ratio);
monitorSize.scale(bounds.size(), Qt::KeepAspectRatio);
if (monitorSize.isEmpty()) {
return;
}
monitorRect = QRect(QPoint(0,0), monitorSize);
monitorRect.moveCenter(bounds.center());
screenGraphics->resizeFrame(monitorRect.size());
previewRect = screenGraphics->contentsRect().toRect();
previewRect.moveCenter(bounds.center());
}
ScreenPreviewWidget *q;
Plasma::FrameSvg *screenGraphics;
QPixmap preview;
QRect monitorRect;
qreal ratio;
QRect previewRect;
};
ScreenPreviewWidget::ScreenPreviewWidget(QWidget *parent)
: QWidget(parent),
d(new ScreenPreviewWidgetPrivate(this))
{
d->screenGraphics = new Plasma::FrameSvg(this);
d->screenGraphics->setImagePath("widgets/monitor");
d->updateScreenGraphics();
}
ScreenPreviewWidget::~ScreenPreviewWidget()
{
delete d;
}
void ScreenPreviewWidget::setPreview(const QPixmap &preview)
{
d->preview = preview;
update();
}
const QPixmap ScreenPreviewWidget::preview() const
{
return d->preview;
}
void ScreenPreviewWidget::setRatio(const qreal ratio)
{
d->ratio = ratio;
d->updateScreenGraphics();
}
qreal ScreenPreviewWidget::ratio() const
{
return d->ratio;
}
QRect ScreenPreviewWidget::previewRect() const
{
return d->previewRect;
}
void ScreenPreviewWidget::resizeEvent(QResizeEvent *e)
{
Q_UNUSED(e)
d->updateScreenGraphics();
}
void ScreenPreviewWidget::paintEvent(QPaintEvent *event)
{
Q_UNUSED(event)
if (d->monitorRect.size().isEmpty()) {
return;
}
QPainter painter(this);
QPoint standPosition(d->monitorRect.center().x() - d->screenGraphics->elementSize("base").width()/2, d->previewRect.bottom());
d->screenGraphics->paint(&painter, QRect(standPosition, d->screenGraphics->elementSize("base")), "base");
d->screenGraphics->paintFrame(&painter, d->monitorRect.topLeft());
painter.save();
if (!d->preview.isNull()) {
painter.setRenderHint(QPainter::SmoothPixmapTransform);
painter.drawPixmap(d->previewRect, d->preview, d->preview.rect());
}
painter.restore();
d->screenGraphics->paint(&painter, d->previewRect, "glass");
}
void ScreenPreviewWidget::dropEvent(QDropEvent *e)
{
if (!e->mimeData()->hasUrls())
return;
QList<QUrl> uris(KUrlMimeData::urlsFromMimeData(e->mimeData()));
if (!uris.isEmpty()) {
// TODO: Download remote file
if (uris.first().isLocalFile())
emit imageDropped(uris.first().path());
}
}
#include "moc_screenpreviewwidget.cpp"