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/***************************************************************************
* Copyright (C) 2008 by Peter Penz <[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 "iconmanager.h"
#include "dolphinmodel.h"
#include "dolphinsortfilterproxymodel.h"
#include <kiconeffect.h>
#include <kio/previewjob.h>
#include <kdebug.h>
#include <kdirlister.h>
#include <konqmimedata.h>
#include <QApplication>
#include <QAbstractItemView>
#include <QClipboard>
#include <QColor>
#include <QIcon>
IconManager::IconManager(QAbstractItemView* parent, DolphinSortFilterProxyModel* model) :
QObject(parent),
m_showPreview(false),
m_view(parent),
m_previewJobs(),
m_dolphinModel(0),
m_proxyModel(model),
m_cutItemsCache()
{
Q_ASSERT(m_view->iconSize().isValid()); // each view must provide its current icon size
m_dolphinModel = static_cast<DolphinModel*>(m_proxyModel->sourceModel());
connect(m_dolphinModel->dirLister(), SIGNAL(newItems(const KFileItemList&)),
this, SLOT(updateIcons(const KFileItemList&)));
QClipboard* clipboard = QApplication::clipboard();
connect(clipboard, SIGNAL(dataChanged()),
this, SLOT(updateCutItems()));
}
IconManager::~IconManager()
{
foreach (KJob* job, m_previewJobs) {
Q_ASSERT(job != 0);
job->kill();
}
m_previewJobs.clear();
}
void IconManager::setShowPreview(bool show)
{
if (m_showPreview != show) {
m_showPreview = show;
m_cutItemsCache.clear();
updateCutItems();
}
}
void IconManager::updateIcons(const KFileItemList& items)
{
// make the icons of all hidden files semitransparent
foreach (KFileItem item, items) {
if (item.name().startsWith('.')) {
applyHiddenItemEffect(item);
}
}
if (!m_showPreview) {
return;
}
// generate previews
const QRect visibleArea = m_view->viewport()->rect();
// Order the items in a way that the preview for the visible items
// is generated first, as this improves the feeled performance a lot.
KFileItemList orderedItems;
foreach (KFileItem item, items) {
if (item.name().startsWith('.')) {
applyHiddenItemEffect(item);
}
const QModelIndex dirIndex = m_dolphinModel->indexForItem(item);
const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
const QRect itemRect = m_view->visualRect(proxyIndex);
if (itemRect.intersects(visibleArea)) {
orderedItems.insert(0, item);
} else {
orderedItems.append(item);
}
}
const QSize size = m_view->iconSize();
KIO::PreviewJob* job = KIO::filePreview(orderedItems, size.width(), size.height());
connect(job, SIGNAL(gotPreview(const KFileItem&, const QPixmap&)),
this, SLOT(replaceIcon(const KFileItem&, const QPixmap&)));
connect(job, SIGNAL(finished(KJob*)),
this, SLOT(slotPreviewJobFinished(KJob*)));
m_previewJobs.append(job);
}
void IconManager::replaceIcon(const KFileItem& item, const QPixmap& pixmap)
{
Q_ASSERT(!item.isNull());
KDirLister* dirLister = m_dolphinModel->dirLister();
if (!m_showPreview || (item.url().directory() != dirLister->url().path())) {
// the preview has been canceled in the meanwhile or the preview
// job is still working on items of an older URL, hence
// the item is not part of the directory model anymore
return;
}
const QModelIndex idx = m_dolphinModel->indexForItem(item);
if (idx.isValid() && (idx.column() == 0)) {
QPixmap newPixmap = pixmap;
if (item.name().startsWith('.')) {
KIconEffect::semiTransparent(newPixmap);
}
const QMimeData* mimeData = QApplication::clipboard()->mimeData();
if (KonqMimeData::decodeIsCutSelection(mimeData) && isCutItem(item)) {
KIconEffect iconEffect;
newPixmap = iconEffect.apply(newPixmap, KIconLoader::Desktop, KIconLoader::DisabledState);
m_dolphinModel->setData(idx, QIcon(newPixmap), Qt::DecorationRole);
} else {
m_dolphinModel->setData(idx, QIcon(newPixmap), Qt::DecorationRole);
}
}
}
void IconManager::slotPreviewJobFinished(KJob* job)
{
const int index = m_previewJobs.indexOf(job);
m_previewJobs.removeAt(index);
}
void IconManager::updateCutItems()
{
// restore the icons of all previously selected items to the
// original state...
foreach (CutItem cutItem, m_cutItemsCache) {
const QModelIndex index = m_dolphinModel->indexForUrl(cutItem.url);
if (index.isValid()) {
m_dolphinModel->setData(index, QIcon(cutItem.pixmap), Qt::DecorationRole);
}
}
m_cutItemsCache.clear();
// ... and apply an item effect to all currently cut items
applyCutItemEffect();
}
bool IconManager::isCutItem(const KFileItem& item) const
{
const QMimeData* mimeData = QApplication::clipboard()->mimeData();
const KUrl::List cutUrls = KUrl::List::fromMimeData(mimeData);
const KUrl& itemUrl = item.url();
foreach (KUrl url, cutUrls) {
if (url == itemUrl) {
return true;
}
}
return false;
}
void IconManager::applyCutItemEffect()
{
const QMimeData* mimeData = QApplication::clipboard()->mimeData();
if (!KonqMimeData::decodeIsCutSelection(mimeData)) {
return;
}
const KFileItemList items(m_dolphinModel->dirLister()->items());
foreach (KFileItem item, items) {
if (isCutItem(item)) {
const QModelIndex index = m_dolphinModel->indexForItem(item);
const QVariant value = m_dolphinModel->data(index, Qt::DecorationRole);
if (value.type() == QVariant::Icon) {
const QIcon icon(qvariant_cast<QIcon>(value));
QPixmap pixmap = icon.pixmap(m_view->iconSize());
// remember current pixmap for the item to be able
// to restore it when other items get cut
CutItem cutItem;
cutItem.url = item.url();
cutItem.pixmap = pixmap;
m_cutItemsCache.append(cutItem);
// apply icon effect to the cut item
KIconEffect iconEffect;
pixmap = iconEffect.apply(pixmap, KIconLoader::Desktop, KIconLoader::DisabledState);
m_dolphinModel->setData(index, QIcon(pixmap), Qt::DecorationRole);
}
}
}
}
void IconManager::applyHiddenItemEffect(const KFileItem& hiddenItem)
{
const QModelIndex index = m_dolphinModel->indexForItem(hiddenItem);
const QVariant value = m_dolphinModel->data(index, Qt::DecorationRole);
if (value.type() == QVariant::Icon) {
const QIcon icon(qvariant_cast<QIcon>(value));
QPixmap pixmap = icon.pixmap(m_view->iconSize());
KIconEffect::semiTransparent(pixmap);
m_dolphinModel->setData(index, QIcon(pixmap), Qt::DecorationRole);
}
}
#include "iconmanager.moc"
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