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/***************************************************************************
* Copyright (C) 2010 by Peter Penz <[email protected]> *
* Copyright (C) 2008 by Fredrik Höglund <[email protected]> *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, 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 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 "filemetadatatooltip.h"
#include <KColorScheme>
#include <KFileMetaDataWidget>
#include <KSeparator>
#include <KWindowSystem>
#include <QLabel>
#include <QPainter>
#include <QVBoxLayout>
FileMetaDataToolTip::FileMetaDataToolTip(QWidget* parent) :
QWidget(parent),
m_preview(0),
m_name(0),
m_fileMetaDataWidget(0)
{
setAttribute(Qt::WA_TranslucentBackground);
setWindowFlags(Qt::ToolTip | Qt::FramelessWindowHint);
// Create widget for file preview
m_preview = new QLabel(this);
m_preview->setAlignment(Qt::AlignTop);
// Create widget for file name
m_name = new QLabel(this);
QFont font = m_name->font();
font.setBold(true);
m_name->setFont(font);
// Create widget for the meta data
m_fileMetaDataWidget = new KFileMetaDataWidget();
m_fileMetaDataWidget->setForegroundRole(QPalette::ToolTipText);
m_fileMetaDataWidget->setReadOnly(true);
connect(m_fileMetaDataWidget, SIGNAL(metaDataRequestFinished(KFileItemList)),
this, SIGNAL(metaDataRequestFinished(KFileItemList)));
QVBoxLayout* textLayout = new QVBoxLayout();
textLayout->addWidget(m_name);
textLayout->addWidget(new KSeparator());
textLayout->addWidget(m_fileMetaDataWidget);
textLayout->setAlignment(m_name, Qt::AlignCenter);
textLayout->setAlignment(m_fileMetaDataWidget, Qt::AlignLeft);
// Assure that the text-layout gets top-aligned by adding a stretch.
// Don't use textLayout->setAlignment(Qt::AlignTop) instead, as this does
// not work with the heightForWidth()-size-hint of m_fileMetaDataWidget
// (see bug #241608)
textLayout->addStretch();
QHBoxLayout* tipLayout = new QHBoxLayout(this);
tipLayout->addWidget(m_preview);
tipLayout->addSpacing(tipLayout->margin());
tipLayout->addLayout(textLayout);
}
FileMetaDataToolTip::~FileMetaDataToolTip()
{
}
void FileMetaDataToolTip::setPreview(const QPixmap& pixmap)
{
m_preview->setPixmap(pixmap);
}
QPixmap FileMetaDataToolTip::preview() const
{
if (m_preview->pixmap()) {
return *m_preview->pixmap();
}
return QPixmap();
}
void FileMetaDataToolTip::setName(const QString& name)
{
m_name->setText(name);
}
QString FileMetaDataToolTip::name() const
{
return m_name->text();
}
void FileMetaDataToolTip::setItems(const KFileItemList& items)
{
m_fileMetaDataWidget->setItems(items);
}
KFileItemList FileMetaDataToolTip::items() const
{
return m_fileMetaDataWidget->items();
}
void FileMetaDataToolTip::paintEvent(QPaintEvent* event)
{
Q_UNUSED(event);
QPainter painter(this);
QColor toColor = palette().brush(QPalette::ToolTipBase).color();
QColor fromColor = KColorScheme::shade(toColor, KColorScheme::LightShade, 0.2);
const bool haveAlphaChannel = KWindowSystem::compositingActive();
if (haveAlphaChannel) {
painter.setRenderHint(QPainter::Antialiasing);
painter.translate(0.5, 0.5);
toColor.setAlpha(220);
fromColor.setAlpha(220);
}
QLinearGradient gradient(QPointF(0.0, 0.0), QPointF(0.0, height()));
gradient.setColorAt(0.0, fromColor);
gradient.setColorAt(1.0, toColor);
painter.setPen(Qt::NoPen);
painter.setBrush(gradient);
const QRect rect(0, 0, width(), height());
if (haveAlphaChannel) {
const qreal radius = 5.0;
QPainterPath path;
path.moveTo(rect.left(), rect.top() + radius);
arc(path, rect.left() + radius, rect.top() + radius, radius, 180, -90);
arc(path, rect.right() - radius, rect.top() + radius, radius, 90, -90);
arc(path, rect.right() - radius, rect.bottom() - radius, radius, 0, -90);
arc(path, rect.left() + radius, rect.bottom() - radius, radius, 270, -90);
path.closeSubpath();
painter.drawPath(path);
} else {
painter.drawRect(rect);
}
}
void FileMetaDataToolTip::arc(QPainterPath& path,
qreal cx, qreal cy,
qreal radius, qreal angle,
qreal sweepLength)
{
path.arcTo(cx-radius, cy-radius, radius * 2, radius * 2, angle, sweepLength);
}
#include "filemetadatatooltip.moc"
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