19d567ef7f
We are only rendering an image, so it's better to load the image into a texture. This allows to properly scale the example preview which magically fixes all the layouting problems which used to be there.
101 lines
3.1 KiB
C++
101 lines
3.1 KiB
C++
/********************************************************************
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KWin - the KDE window manager
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This file is part of the KDE project.
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Copyright (C) 2011 Martin Gräßlin <mgraesslin@kde.org>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*********************************************************************/
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#include "thumbnailitem.h"
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// Qt
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#include <QtCore/QStandardPaths>
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#include <QQuickWindow>
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#include <QSGSimpleTextureNode>
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namespace KWin
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{
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WindowThumbnailItem::WindowThumbnailItem(QQuickItem* parent)
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: QQuickItem(parent)
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, m_wId(0)
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, m_image()
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, m_clipToItem(nullptr)
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{
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setFlag(ItemHasContents);
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}
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WindowThumbnailItem::~WindowThumbnailItem()
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{
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}
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void WindowThumbnailItem::setWId(qulonglong wId)
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{
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m_wId = wId;
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emit wIdChanged(wId);
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findImage();
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}
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void WindowThumbnailItem::setClipTo(QQuickItem *clip)
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{
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if (m_clipToItem == clip) {
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return;
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}
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m_clipToItem = clip;
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emit clipToChanged();
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}
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void WindowThumbnailItem::findImage()
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{
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QString imagePath;
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switch (m_wId) {
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case Konqueror:
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imagePath = QStandardPaths::locate(QStandardPaths::GenericDataLocation, "kwin/kcm_kwintabbox/konqueror.png");
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break;
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case Systemsettings:
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imagePath = QStandardPaths::locate(QStandardPaths::GenericDataLocation, "kwin/kcm_kwintabbox/systemsettings.png");
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break;
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case KMail:
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imagePath = QStandardPaths::locate(QStandardPaths::GenericDataLocation, "kwin/kcm_kwintabbox/kmail.png");
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break;
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case Dolphin:
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imagePath = QStandardPaths::locate(QStandardPaths::GenericDataLocation, "kwin/kcm_kwintabbox/dolphin.png");
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break;
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default:
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// ignore
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break;
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}
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if (imagePath.isNull()) {
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m_image = QImage();
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} else {
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m_image = QImage(imagePath);
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}
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}
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QSGNode *WindowThumbnailItem::updatePaintNode(QSGNode *oldNode, UpdatePaintNodeData *updatePaintNodeData)
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{
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Q_UNUSED(updatePaintNodeData)
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QSGSimpleTextureNode *node = static_cast<QSGSimpleTextureNode*>(oldNode);
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if (!node) {
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node = new QSGSimpleTextureNode();
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node->setFiltering(QSGTexture::Linear);
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node->setTexture(window()->createTextureFromImage(m_image));
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}
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const QSize size(node->texture()->textureSize().scaled(boundingRect().size().toSize(), Qt::KeepAspectRatio));
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const qreal x = boundingRect().x() + (boundingRect().width() - size.width())/2;
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const qreal y = boundingRect().y() + (boundingRect().height() - size.height())/2;
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node->setRect(QRectF(QPointF(x, y), size));
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return node;
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}
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} // namespace KWin
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