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/*
SPDX-FileCopyrightText: 2002 Shie Erlich <erlich@users.sourceforge.net>
SPDX-FileCopyrightText: 2002 Rafi Yanai <yanai@users.sourceforge.net>
SPDX-FileCopyrightText: 2004-2022 Krusader Krew <https://krusader.org>
SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "krpreviewpopup.h"
#include <algorithm>
// QtGui
#include <QPainter>
#include <QPixmap>
// QtWidgets
#include <QApplication>
#include <QProxyStyle>
#include <QStyleOptionMenuItem>
#include <KIO/PreviewJob>
#include <KLocalizedString>
#include "../KViewer/krviewer.h"
class KrPreviewPopup::ProxyStyle : public QProxyStyle
{
public:
ProxyStyle()
: QProxyStyle(QApplication::style())
{
}
QSize sizeFromContents(ContentsType type, const QStyleOption *option, const QSize &contentsSize, const QWidget *widget = nullptr) const override
{
if (type == QStyle::CT_MenuItem) {
const auto *menuItem = qstyleoption_cast<const QStyleOptionMenuItem *>(option);
QFontMetrics fontMetrics(menuItem->font);
QSize iconSize = menuItem->icon.actualSize(QSize(MAX_SIZE, MAX_SIZE));
QSize textSize = QSize(fontMetrics.boundingRect(menuItem->text).width(), fontMetrics.height());
return QSize(std::max(iconSize.width(), textSize.width()) + MARGIN * 2, iconSize.height() + textSize.height() + MARGIN * 2);
} else
return QProxyStyle::sizeFromContents(type, option, contentsSize, widget);
}
void drawControl(ControlElement element, const QStyleOption *option, QPainter *painter, const QWidget *widget = nullptr) const override
{
if (element == QStyle::CE_MenuItem) {
painter->save();
const auto *menuItem = qstyleoption_cast<const QStyleOptionMenuItem *>(option);
bool active = menuItem->state & State_Selected;
QRect rect = menuItem->rect;
if (active)
painter->fillRect(rect, menuItem->palette.brush(QPalette::Highlight));
rect.adjust(MARGIN, MARGIN, -MARGIN, -MARGIN);
int textHeight = QFontMetrics(menuItem->font).height();
QRect previewRect = rect;
previewRect.setHeight(rect.height() - textHeight);
QPixmap pixmap = menuItem->icon.pixmap(menuItem->icon.actualSize(QSize(MAX_SIZE, MAX_SIZE)));
QProxyStyle::drawItemPixmap(painter, previewRect, Qt::AlignCenter, pixmap);
QRect textRect = rect;
textRect.setTop(previewRect.bottom() + 1);
painter->setPen(active ? menuItem->palette.highlightedText().color() : menuItem->palette.buttonText().color());
int textFlags = Qt::TextShowMnemonic | Qt::TextDontClip | Qt::TextSingleLine | Qt::AlignCenter;
painter->drawText(textRect, textFlags, menuItem->text);
painter->restore();
} else
QProxyStyle::drawControl(element, option, painter, widget);
}
};
KrPreviewPopup::KrPreviewPopup()
: jobStarted(false)
{
prevNotAvailAction = addAction(i18n("Preview not available"));
setStyle(new ProxyStyle());
connect(this, &KrPreviewPopup::triggered, this, &KrPreviewPopup::view);
}
void KrPreviewPopup::showEvent(QShowEvent *event)
{
QMenu::showEvent(event);
if (!jobStarted) {
QStringList allPlugins = KIO::PreviewJob::availablePlugins();
KIO::PreviewJob *pjob = new KIO::PreviewJob(files, QSize(MAX_SIZE, MAX_SIZE), &allPlugins);
pjob->setScaleType(KIO::PreviewJob::ScaledAndCached);
connect(pjob, &KIO::PreviewJob::gotPreview, this, &KrPreviewPopup::addPreview);
jobStarted = true;
}
}
void KrPreviewPopup::setUrls(const QList<QUrl> &urls)
{
for (const QUrl &url : urls) {
files.push_back(KFileItem(url));
}
}
void KrPreviewPopup::addPreview(const KFileItem &file, const QPixmap &preview)
{
if (prevNotAvailAction) {
removeAction(prevNotAvailAction);
delete prevNotAvailAction;
prevNotAvailAction = nullptr;
}
QAction *act = addAction(file.text());
act->setIcon(QIcon(preview));
act->setData(QVariant::fromValue(file.url()));
}
void KrPreviewPopup::view(QAction *clicked)
{
if (clicked && clicked->data().canConvert<QUrl>())
KrViewer::view(clicked->data().value<QUrl>());
}
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