QObject(parent),
m_showPreview(false),
m_view(parent),
+ m_previewTimer(0),
m_previewJobs(),
m_dolphinModel(0),
m_proxyModel(model),
- m_cutItemsCache()
+ m_cutItemsCache(),
+ m_previews()
{
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&)));
+ this, SLOT(generatePreviews(const KFileItemList&)));
QClipboard* clipboard = QApplication::clipboard();
connect(clipboard, SIGNAL(dataChanged()),
this, SLOT(updateCutItems()));
+
+ m_previewTimer = new QTimer(this);
+ connect(m_previewTimer, SIGNAL(timeout()), this, SLOT(dispatchPreviewQueue()));
}
IconManager::~IconManager()
{
- foreach (KJob* job, m_previewJobs) {
- Q_ASSERT(job != 0);
- job->kill();
- }
- m_previewJobs.clear();
+ killJobs();
}
m_showPreview = show;
m_cutItemsCache.clear();
updateCutItems();
+ if (show) {
+ updatePreviews();
+ }
}
}
-void IconManager::updateIcons(const KFileItemList& items)
+void IconManager::updatePreviews()
{
- // make the icons of all hidden files semitransparent
- foreach (KFileItem item, items) {
- if (item.isHidden()) {
- applyHiddenItemEffect(item);
- }
+ if (!m_showPreview) {
+ return;
}
+ killJobs();
+ KFileItemList itemList;
+
+ const int rowCount = m_dolphinModel->rowCount();
+ for (int row = 0; row < rowCount; ++row) {
+ const QModelIndex index = m_dolphinModel->index(row, 0);
+ KFileItem item = m_dolphinModel->itemForIndex(index);
+ itemList.append(item);
+ }
+
+ generatePreviews(itemList);
+}
+
+void IconManager::generatePreviews(const KFileItemList &items)
+{
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
const QSize size = m_view->iconSize();
KIO::PreviewJob* job = KIO::filePreview(orderedItems, 128, 128);
connect(job, SIGNAL(gotPreview(const KFileItem&, const QPixmap&)),
- this, SLOT(replaceIcon(const KFileItem&, const QPixmap&)));
+ this, SLOT(addToPreviewQueue(const KFileItem&, const QPixmap&)));
connect(job, SIGNAL(finished(KJob*)),
this, SLOT(slotPreviewJobFinished(KJob*)));
m_previewJobs.append(job);
+ m_previewTimer->start(200);
+}
+
+void IconManager::addToPreviewQueue(const KFileItem& item, const QPixmap& pixmap)
+{
+ Preview preview;
+ preview.item = item;
+ preview.pixmap = pixmap;
+ m_previews.append(preview);
+}
+
+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();
+}
+
+void IconManager::dispatchPreviewQueue()
+{
+ int previewsCount = m_previews.count();
+ if (previewsCount > 0) {
+ // Applying the previews to the model must be done step by step
+ // in larger blocks: Applying a preview immediately when getting the signal
+ // 'gotPreview()' from the PreviewJob is too expensive, as a relayout
+ // of the view would be triggered for each single preview.
+
+ int dispatchCount = 30;
+ if (dispatchCount > m_previews.count()) {
+ dispatchCount = m_previews.count();
+ }
+
+ for (int i = 0; i < dispatchCount; ++i) {
+ const Preview& preview = m_previews.first();
+ replaceIcon(preview.item, preview.pixmap);
+ m_previews.pop_front();
+ }
+
+ previewsCount = m_previews.count();
+ }
+
+ const bool workingPreviewJobs = (m_previewJobs.count() > 0);
+ if (workingPreviewJobs) {
+ // poll for previews as long as not all preview jobs are finished
+ m_previewTimer->start(200);
+ } else if (previewsCount > 0) {
+ // all preview jobs are finished but there are still pending previews
+ // in the queue -> poll more aggressively
+ m_previewTimer->start(10);
+ }
}
void IconManager::replaceIcon(const KFileItem& item, const QPixmap& pixmap)
limitToSize(icon, m_view->iconSize());
}
- if (item.isHidden()) {
- if (!icon.hasAlpha()) {
- // the semitransparent operation requires having an alpha mask
- QPixmap alphaMask(icon.size());
- alphaMask.fill();
- icon.setAlphaChannel(alphaMask);
- }
- KIconEffect::semiTransparent(icon);
- }
-
const QMimeData* mimeData = QApplication::clipboard()->mimeData();
if (KonqMimeData::decodeIsCutSelection(mimeData) && isCutItem(item)) {
KIconEffect iconEffect;
}
}
-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();
}
}
-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));
- const QSize maxSize = m_view->iconSize();
- QPixmap pixmap = icon.pixmap(maxSize.height(), maxSize.height()); // ignore the width
- KIconEffect::semiTransparent(pixmap);
- m_dolphinModel->setData(index, QIcon(pixmap), Qt::DecorationRole);
- }
-}
-
bool IconManager::applyImageFrame(QPixmap& icon)
{
const QSize maxSize = m_view->iconSize();
- if ((maxSize.width() <= 24) || (maxSize.height() <= 24)) {
- // the maximum size is too small for a frame
+ const bool applyFrame = (maxSize.width() > KIconLoader::SizeSmallMedium) &&
+ (maxSize.height() > KIconLoader::SizeSmallMedium) &&
+ ((icon.width() > KIconLoader::SizeLarge) ||
+ (icon.height() > KIconLoader::SizeLarge));
+ if (!applyFrame) {
+ // the maximum size or the image itself is too small for a frame
return false;
}
painter.begin(&framedIcon);
painter.drawPixmap(frame, frame, icon);
- // draw a white frame around the icon
- painter.setPen(Qt::NoPen);
- painter.setBrush(palette.brush(QPalette::Normal, QPalette::Base));
- painter.drawRect(0, 0, width, frame);
- painter.drawRect(0, height - frame, width, frame);
- painter.drawRect(0, frame, frame, height - doubleFrame);
- painter.drawRect(width - frame, frame, frame, height - doubleFrame);
-
// add a border
painter.setPen(palette.color(QPalette::Text));
painter.setBrush(Qt::NoBrush);
painter.drawRect(0, 0, width, height);
painter.drawRect(1, 1, width - 2, height - 2);
- // dimm image frame by 25 %
- painter.setPen(QColor(0, 0, 0, 64));
+ // dim image frame by 12.5 %
+ painter.setPen(QColor(0, 0, 0, 32));
painter.drawRect(frame, frame, width - doubleFrame, height - doubleFrame);
painter.end();
}
}
+void IconManager::killJobs()
+{
+ foreach (KJob* job, m_previewJobs) {
+ Q_ASSERT(job != 0);
+ job->kill();
+ }
+ m_previewJobs.clear();
+}
+
#include "iconmanager.moc"
projects / dolphin.git / blobdiff