Differential D3539 Diff 8662 applets/notifications/plugin/thumbnailer.cpp

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applets/notifications/plugin/thumbnailer.cpp

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		1		/*
		2		Copyright (C) 2016 Kai Uwe Broulik <kde@privat.broulik.de>
		3
		4		This library is free software; you can redistribute it and/or
		5		modify it under the terms of the GNU Lesser General Public
		6		License as published by the Free Software Foundation; either
		7		version 2.1 of the License, or (at your option) any later version.
		8
		9		This library is distributed in the hope that it will be useful,
		10		but WITHOUT ANY WARRANTY; without even the implied warranty of
		11		MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
		12		Lesser General Public License for more details.
		13
		14		You should have received a copy of the GNU Lesser General Public
		15		License along with this library; if not, write to the Free Software
		16		Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
		17		*/
		18
		19		#include "thumbnailer.h"
		20
		21		#include <KIO/PreviewJob>
		22
		23		#include <QDebug>
		24		#include <QIcon>
		25
		26		Thumbnailer::Thumbnailer(QObject *parent) : QObject(parent)
		27		{
		28
		29		}
		30
		31		Thumbnailer::~Thumbnailer() = default;
		32
		33		void Thumbnailer::classBegin()
		34		{
		35
		36		}
		37
		38		void Thumbnailer::componentComplete()
		39		{
		40		m_inited = true;
		41		generatePreview();
		42		}
		43
		44		QUrl Thumbnailer::url() const
		45		{
		46		return m_url;
		47		}
		48
		49		void Thumbnailer::setUrl(const QUrl &url)
		50		{
		51		if (m_url != url) {
		52		m_url = url;
		53		emit urlChanged();
		54
		55		generatePreview();
		56		}
		57		}
		58
		59		QSize Thumbnailer::size() const
		60		{
		61		return m_size;
		62		}
		63
		64		void Thumbnailer::setSize(const QSize &size)
		65		{
		66		if (m_size != size) {
		67		m_size = size;
		68		emit sizeChanged();
		69
		70		generatePreview();
		71		}
		72		}
		73
		74		bool Thumbnailer::hasPreview() const
		75		{
		76		return !m_pixmap.isNull();
		77		}
		78
		79		QPixmap Thumbnailer::pixmap() const
		80		{
		81		return m_pixmap;
		82		}
		83
		84		QSize Thumbnailer::pixmapSize() const
		85		{
		86		return m_pixmap.size();
		87		}
		88
		89		QString Thumbnailer::iconName() const
		90		{
		91		return m_iconName;
		92		}
		93
		94		void Thumbnailer::generatePreview()
		95		{
		96		if (!m_inited) {
		97		return;
		98		}
		99
		100		if (!m_url.isValid() \|\| !m_url.isLocalFile() \|\| !m_size.isValid()) {
		101		return;
		102		}
		103
		104		KIO::PreviewJob *job = KIO::filePreview(KFileItemList({KFileItem(m_url)}), m_size);
		105		job->setIgnoreMaximumSize(true);
		106
		107		connect(job, &KIO::PreviewJob::gotPreview, this, [this](const KFileItem &item, const QPixmap &preview) {
		108		Q_UNUSED(item);
		109		m_pixmap = preview;
		110		emit pixmapChanged();
		111
		112		if (!m_iconName.isEmpty()) {
		113		m_iconName.clear();
		114		emit iconNameChanged();
		115		}
		116		});
		117
		118		connect(job, &KIO::PreviewJob::failed, this, [this](const KFileItem &item) {
		119		m_pixmap = QPixmap();
		120		emit pixmapChanged();
		121
		122		const QString &iconName = item.determineMimeType().iconName();
		123		if (m_iconName != iconName) {
		124		m_iconName = iconName;
		125		emit iconNameChanged();
		126		}
		127		});
		128
		129		job->start();
		130		}