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()
generatePreviews(itemList);
}
-void IconManager::updateIcons(const KFileItemList& items)
+void IconManager::generatePreviews(const KFileItemList &items)
{
- if (m_showPreview) {
- generatePreviews(items);
+ if (!m_showPreview) {
+ return;
+ }
+
+ 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) {
+ 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, 128, 128);
+ connect(job, SIGNAL(gotPreview(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::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::generatePreviews(const KFileItemList &items)
-{
- Q_ASSERT(m_showPreview);
- 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) {
- 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, 128, 128);
- 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);
-}
-
bool IconManager::isCutItem(const KFileItem& item) const
{
const QMimeData* mimeData = QApplication::clipboard()->mimeData();
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);
projects / dolphin.git / blobdiff