dolphinview: Update thumbnail on filename change

[dolphin.git] / src / kitemviews / kfileitemmodelrolesupdater.cpp

diff --git a/src/kitemviews/kfileitemmodelrolesupdater.cpp b/src/kitemviews/kfileitemmodelrolesupdater.cpp
index 795b85a44f3909d55f4c432e0c20dca6d6705ab2..8811401b03e9401afdbc608ad0abcdb6a5b348af 100644 (file)
--- a/src/kitemviews/kfileitemmodelrolesupdater.cpp
+++ b/src/kitemviews/kfileitemmodelrolesupdater.cpp
@@ -13,8 +13,10 @@
 
 #include <KConfig>
 #include <KConfigGroup>
+#include <KIO/ListJob>
 #include <KIO/PreviewJob>
 #include <KIconLoader>
+#include <KIconUtils>
 #include <KJobWidgets>
 #include <KOverlayIconPlugin>
 #include <KPluginMetaData>
@@ -67,6 +69,7 @@ KFileItemModelRolesUpdater::KFileItemModelRolesUpdater(KFileItemModel *model, QO
     , m_finishedItems()
     , m_model(model)
     , m_iconSize()
+    , m_devicePixelRatio(1.0)
     , m_firstVisibleIndex(0)
     , m_lastVisibleIndex(-1)
     , m_maximumVisibleItems(50)
@@ -92,7 +95,7 @@ KFileItemModelRolesUpdater::KFileItemModelRolesUpdater(KFileItemModel *model, QO
 {
     Q_ASSERT(model);
 
-    const KConfigGroup globalConfig(KSharedConfig::openConfig(), "PreviewSettings");
+    const KConfigGroup globalConfig(KSharedConfig::openConfig(), QStringLiteral("PreviewSettings"));
     m_enabledPlugins = globalConfig.readEntry("Plugins", KIO::PreviewJob::defaultPlugins());
     m_localFileSizePreviewLimit = static_cast<qulonglong>(globalConfig.readEntry("MaximumSize", 0));
 
@@ -158,6 +161,25 @@ QSize KFileItemModelRolesUpdater::iconSize() const
     return m_iconSize;
 }
 
+void KFileItemModelRolesUpdater::setDevicePixelRatio(qreal devicePixelRatio)
+{
+    if (m_devicePixelRatio != devicePixelRatio) {
+        m_devicePixelRatio = devicePixelRatio;
+        if (m_state == Paused) {
+            m_iconSizeChangedDuringPausing = true;
+        } else if (m_previewShown) {
+            // A dpr change requires the regenerating of all previews.
+            m_finishedItems.clear();
+            startUpdating();
+        }
+    }
+}
+
+qreal KFileItemModelRolesUpdater::devicePixelRatio() const
+{
+    return m_devicePixelRatio;
+}
+
 void KFileItemModelRolesUpdater::setVisibleIndexRange(int index, int count)
 {
     if (index < 0) {
@@ -536,15 +558,13 @@ void KFileItemModelRolesUpdater::slotGotPreview(const KFileItem &item, const QPi
     const QStringList overlays = data["iconOverlays"].toStringList();
     // Strangely KFileItem::overlays() returns empty string-values, so
     // we need to check first whether an overlay must be drawn at all.
-    // It is more efficient to do it here, as KIconLoader::drawOverlays()
-    // assumes that an overlay will be drawn and has some additional
-    // setup time.
     if (!scaledPixmap.isNull()) {
         for (const QString &overlay : overlays) {
             if (!overlay.isEmpty()) {
                 // There is at least one overlay, draw all overlays above m_pixmap
                 // and cancel the check
-                KIconLoader::global()->drawOverlays(overlays, scaledPixmap, KIconLoader::Desktop);
+                const QSize size = scaledPixmap.size();
+                scaledPixmap = KIconUtils::addOverlays(scaledPixmap, overlays).pixmap(size);
                 break;
             }
         }
@@ -555,6 +575,7 @@ void KFileItemModelRolesUpdater::slotGotPreview(const KFileItem &item, const QPi
     disconnect(m_model, &KFileItemModel::itemsChanged, this, &KFileItemModelRolesUpdater::slotItemsChanged);
     m_model->setData(index, data);
     connect(m_model, &KFileItemModel::itemsChanged, this, &KFileItemModelRolesUpdater::slotItemsChanged);
+    Q_EMIT previewJobFinished(); // For unit testing
 
     m_finishedItems.insert(item);
 }
@@ -992,7 +1013,7 @@ void KFileItemModelRolesUpdater::startPreviewJob()
     }
 
     KIO::PreviewJob *job = new KIO::PreviewJob(itemSubSet, cacheSize, &m_enabledPlugins);
-
+    job->setDevicePixelRatio(m_devicePixelRatio);
     job->setIgnoreMaximumSize(itemSubSet.first().isLocalFile() && !itemSubSet.first().isSlow() && m_localFileSizePreviewLimit <= 0);
     if (job->uiDelegate()) {
         KJobWidgets::setWindow(job, qApp->activeWindow());
@@ -1038,8 +1059,8 @@ QPixmap KFileItemModelRolesUpdater::transformPreviewPixmap(const QPixmap &pixmap
             }
         }
     } else if (!pixmap.isNull()) {
-        KPixmapModifier::scale(scaledPixmap, m_iconSize * qApp->devicePixelRatio());
-        scaledPixmap.setDevicePixelRatio(qApp->devicePixelRatio());
+        KPixmapModifier::scale(scaledPixmap, m_iconSize * m_devicePixelRatio);
+        scaledPixmap.setDevicePixelRatio(m_devicePixelRatio);
     }
 
     return scaledPixmap;
@@ -1267,11 +1288,11 @@ bool KFileItemModelRolesUpdater::applyResolvedRoles(int index, ResolveHint hint)
 
 void KFileItemModelRolesUpdater::startDirectorySizeCounting(const KFileItem &item, int index)
 {
-    if (!item.isLocalFile()) {
+    if (ContentDisplaySettings::directorySizeMode() == ContentDisplaySettings::EnumDirectorySizeMode::None || !item.isLocalFile()) {
         return;
     }
 
-    if (ContentDisplaySettings::directorySizeCount() || item.isSlow()) {
+    if (ContentDisplaySettings::directorySizeMode() == ContentDisplaySettings::EnumDirectorySizeMode::ContentCount || item.isSlow()) {
         // fastpath no recursion necessary
 
         auto data = m_model->data(index);
@@ -1286,8 +1307,6 @@ void KFileItemModelRolesUpdater::startDirectorySizeCounting(const KFileItem &ite
             url = QUrl::fromLocalFile(item.localPath());
         }
 
-        data.insert("isExpandable", false);
-        data.insert("count", 0);
         data.insert("size", -2); // invalid size, -1 means size unknown
 
         disconnect(m_model, &KFileItemModel::itemsChanged, this, &KFileItemModelRolesUpdater::slotItemsChanged);
@@ -1295,7 +1314,11 @@ void KFileItemModelRolesUpdater::startDirectorySizeCounting(const KFileItem &ite
         connect(m_model, &KFileItemModel::itemsChanged, this, &KFileItemModelRolesUpdater::slotItemsChanged);
 
         auto listJob = KIO::listDir(url, KIO::HideProgressInfo);
-        QObject::connect(listJob, &KIO::ListJob::entries, this, [this, index](const KJob * /*job*/, const KIO::UDSEntryList &list) {
+        QObject::connect(listJob, &KIO::ListJob::entries, this, [this, item](const KJob * /*job*/, const KIO::UDSEntryList &list) {
+            int index = m_model->index(item);
+            if (index < 0) {
+                return;
+            }
             auto data = m_model->data(index);
             int origCount = data.value("count").toInt();
             int entryCount = origCount;
@@ -1315,14 +1338,21 @@ void KFileItemModelRolesUpdater::startDirectorySizeCounting(const KFileItem &ite
                 ++entryCount;
             }
 
-            // count has changed
-            if (origCount < entryCount) {
-                QHash<QByteArray, QVariant> data;
-                data.insert("isExpandable", entryCount > 0);
-                data.insert("count", entryCount);
+            QHash<QByteArray, QVariant> newData;
+            QVariant expandable = data.value("isExpandable");
+            if (expandable.isNull() || expandable.toBool() != (entryCount > 0)) {
+                // if expandable has changed
+                newData.insert("isExpandable", entryCount > 0);
+            }
+
+            if (origCount != entryCount) {
+                // count has changed
+                newData.insert("count", entryCount);
+            }
 
+            if (!newData.isEmpty()) {
                 disconnect(m_model, &KFileItemModel::itemsChanged, this, &KFileItemModelRolesUpdater::slotItemsChanged);
-                m_model->setData(index, data);
+                m_model->setData(index, newData);
                 connect(m_model, &KFileItemModel::itemsChanged, this, &KFileItemModelRolesUpdater::slotItemsChanged);
             }
         });