#include <kiconeffect.h>
#include <kio/previewjob.h>
-#include <kdebug.h>
#include <kdirlister.h>
#include <konqmimedata.h>
#include <QAbstractItemView>
#include <QClipboard>
#include <QColor>
+#include <QPainter>
#include <QIcon>
IconManager::IconManager(QAbstractItemView* parent, DolphinSortFilterProxyModel* model) :
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, size.width(), size.height());
+ 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::replaceIcon(const KFileItem& item, const QPixmap& pixmap)
+void IconManager::addToPreviewQueue(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 icon = pixmap;
- if (item.isHidden()) {
- if (!icon.hasAlpha()) {
- // the semitransparent operation requires having an alpha mask
- QPixmap alphaMask(icon.width(), icon.height());
- alphaMask.fill();
- icon.setAlphaChannel(alphaMask);
- }
- KIconEffect::semiTransparent(icon);
- }
-
- const QMimeData* mimeData = QApplication::clipboard()->mimeData();
- if (KonqMimeData::decodeIsCutSelection(mimeData) && isCutItem(item)) {
- KIconEffect iconEffect;
- icon = iconEffect.apply(icon, KIconLoader::Desktop, KIconLoader::DisabledState);
- m_dolphinModel->setData(idx, QIcon(icon), Qt::DecorationRole);
- } else {
- m_dolphinModel->setData(idx, QIcon(icon), Qt::DecorationRole);
- }
- }
+ Preview preview;
+ preview.item = item;
+ preview.pixmap = pixmap;
+ m_previews.append(preview);
}
void IconManager::slotPreviewJobFinished(KJob* job)
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)
+{
+ Q_ASSERT(!item.isNull());
+ if (!m_showPreview) {
+ // the preview has been canceled in the meantime
+ return;
+ }
+
+ // check whether the item is part of the directory lister (it is possible
+ // that a preview from an old directory lister is received)
+ KDirLister* dirLister = m_dolphinModel->dirLister();
+ bool isOldPreview = true;
+ const KUrl::List dirs = dirLister->directories();
+ const QString itemDir = item.url().directory();
+ foreach (KUrl url, dirs) {
+ if (url.path() == itemDir) {
+ isOldPreview = false;
+ break;
+ }
+ }
+ if (isOldPreview) {
+ return;
+ }
+
+ const QModelIndex idx = m_dolphinModel->indexForItem(item);
+ if (idx.isValid() && (idx.column() == 0)) {
+ QPixmap icon = pixmap;
+
+ const QString mimeType = item.mimetype();
+ const QString mimeTypeGroup = mimeType.left(mimeType.indexOf('/'));
+ if ((mimeTypeGroup != "image") || !applyImageFrame(icon)) {
+ limitToSize(icon, m_view->iconSize());
+ }
+
+ const QMimeData* mimeData = QApplication::clipboard()->mimeData();
+ if (KonqMimeData::decodeIsCutSelection(mimeData) && isCutItem(item)) {
+ KIconEffect iconEffect;
+ icon = iconEffect.apply(icon, KIconLoader::Desktop, KIconLoader::DisabledState);
+ m_dolphinModel->setData(idx, QIcon(icon), Qt::DecorationRole);
+ } else {
+ m_dolphinModel->setData(idx, QIcon(icon), Qt::DecorationRole);
+ }
+ }
+}
+
bool IconManager::isCutItem(const KFileItem& item) const
{
const QMimeData* mimeData = QApplication::clipboard()->mimeData();
return;
}
- const KFileItemList items(m_dolphinModel->dirLister()->items());
+ KFileItemList items;
+ KDirLister* dirLister = m_dolphinModel->dirLister();
+ const KUrl::List dirs = dirLister->directories();
+ foreach (KUrl url, dirs) {
+ items << dirLister->itemsForDir(url);
+ }
+
foreach (KFileItem item, items) {
if (isCutItem(item)) {
const QModelIndex index = m_dolphinModel->indexForItem(item);
}
}
-void IconManager::applyHiddenItemEffect(const KFileItem& hiddenItem)
+bool IconManager::applyImageFrame(QPixmap& icon)
+{
+ const QSize maxSize = m_view->iconSize();
+ 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;
+ }
+
+ const int frame = 4;
+ const int doubleFrame = frame * 2;
+
+ // resize the icon to the maximum size minus the space required for the frame
+ limitToSize(icon, QSize(maxSize.width() - doubleFrame, maxSize.height() - doubleFrame));
+
+ QPainter painter;
+ const QPalette palette = m_view->palette();
+ QPixmap framedIcon(icon.size().width() + doubleFrame, icon.size().height() + doubleFrame);
+ framedIcon.fill(palette.color(QPalette::Normal, QPalette::Base));
+ const int width = framedIcon.width() - 1;
+ const int height = framedIcon.height() - 1;
+
+ painter.begin(&framedIcon);
+ painter.drawPixmap(frame, frame, icon);
+
+ // 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);
+
+ // dim image frame by 12.5 %
+ painter.setPen(QColor(0, 0, 0, 32));
+ painter.drawRect(frame, frame, width - doubleFrame, height - doubleFrame);
+ painter.end();
+
+ icon = framedIcon;
+
+ // provide an alpha channel for the border
+ QPixmap alphaChannel(icon.size());
+ alphaChannel.fill();
+
+ QPainter alphaPainter(&alphaChannel);
+ alphaPainter.setBrush(Qt::NoBrush);
+ alphaPainter.setPen(QColor(32, 32, 32));
+ alphaPainter.drawRect(0, 0, width, height);
+ alphaPainter.setPen(QColor(64, 64, 64));
+ alphaPainter.drawRect(1, 1, width - 2, height - 2);
+
+ icon.setAlphaChannel(alphaChannel);
+ return true;
+}
+
+void IconManager::limitToSize(QPixmap& icon, const QSize& maxSize)
+{
+ if ((icon.width() > maxSize.width()) || (icon.height() > maxSize.height())) {
+ icon = icon.scaled(maxSize, Qt::KeepAspectRatio, Qt::SmoothTransformation);
+ }
+}
+
+void IconManager::killJobs()
{
- 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);
+ foreach (KJob* job, m_previewJobs) {
+ Q_ASSERT(job != 0);
+ job->kill();
}
+ m_previewJobs.clear();
}
#include "iconmanager.moc"
projects / dolphin.git / blobdiff