m_itemLayout(IconsLayout),
m_modelRolesUpdater(0),
m_updateVisibleIndexRangeTimer(0),
- m_updateIconSizeTimer(0),
- m_minimumRolesWidths()
+ m_updateIconSizeTimer(0)
{
setAcceptDrops(true);
connect(m_updateIconSizeTimer, SIGNAL(timeout()), this, SLOT(updateIconSize()));
setVisibleRoles(QList<QByteArray>() << "name");
-
- updateMinimumRolesWidths();
}
KFileItemListView::~KFileItemListView()
void KFileItemListView::setPreviewsShown(bool show)
{
if (m_modelRolesUpdater) {
- m_modelRolesUpdater->setPreviewShown(show);
+ m_modelRolesUpdater->setPreviewsShown(show);
}
}
bool KFileItemListView::previewsShown() const
{
- return m_modelRolesUpdater->isPreviewShown();
+ return m_modelRolesUpdater ? m_modelRolesUpdater->previewsShown() : false;
+}
+
+void KFileItemListView::setEnlargeSmallPreviews(bool enlarge)
+{
+ if (m_modelRolesUpdater) {
+ m_modelRolesUpdater->setEnlargeSmallPreviews(enlarge);
+ }
+}
+
+bool KFileItemListView::enlargeSmallPreviews() const
+{
+ return m_modelRolesUpdater ? m_modelRolesUpdater->enlargeSmallPreviews() : false;
}
void KFileItemListView::setItemLayout(Layout layout)
{
if (m_itemLayout != layout) {
+ const bool updateRoles = (m_itemLayout == DetailsLayout || layout == DetailsLayout);
m_itemLayout = layout;
+ if (updateRoles) {
+ // The details-layout requires some invisible roles that
+ // must be added to the model if the new layout is "details".
+ // If the old layout was "details" the roles will get removed.
+ applyRolesToModel();
+ }
updateLayoutOfVisibleItems();
}
}
return m_modelRolesUpdater ? m_modelRolesUpdater->enabledPlugins() : QStringList();
}
-QSizeF KFileItemListView::itemSizeHint(int index) const
-{
- const QHash<QByteArray, QVariant> values = model()->data(index);
- const KItemListStyleOption& option = styleOption();
- const int additionalRolesCount = qMax(visibleRoles().count() - 1, 0);
-
- switch (m_itemLayout) {
- case IconsLayout: {
- const QString text = KStringHandler::preProcessWrap(values["name"].toString());
-
- const qreal maxWidth = itemSize().width() - 2 * option.margin;
- int textLinesCount = 0;
- QTextLine line;
-
- // Calculate the number of lines required for wrapping the name
- QTextOption textOption(Qt::AlignHCenter);
- textOption.setWrapMode(QTextOption::WrapAtWordBoundaryOrAnywhere);
-
- QTextLayout layout(text, option.font);
- layout.setTextOption(textOption);
- layout.beginLayout();
- while ((line = layout.createLine()).isValid()) {
- line.setLineWidth(maxWidth);
- line.naturalTextWidth();
- ++textLinesCount;
- }
- layout.endLayout();
-
- // Add one line for each additional information
- textLinesCount += additionalRolesCount;
-
- const qreal height = textLinesCount * option.fontMetrics.height() +
- option.iconSize +
- option.margin * 4;
- return QSizeF(itemSize().width(), height);
- }
-
- case CompactLayout: {
- // For each row exactly one role is shown. Calculate the maximum required width that is necessary
- // to show all roles without horizontal clipping.
- qreal maximumRequiredWidth = 0.0;
-
- foreach (const QByteArray& role, visibleRoles()) {
- const QString text = KFileItemListWidget::roleText(role, values);
- const qreal requiredWidth = option.fontMetrics.width(text);
- maximumRequiredWidth = qMax(maximumRequiredWidth, requiredWidth);
- }
-
- const qreal width = option.margin * 4 + option.iconSize + maximumRequiredWidth;
- const qreal height = option.margin * 2 + qMax(option.iconSize, (1 + additionalRolesCount) * option.fontMetrics.height());
- return QSizeF(width, height);
- }
-
- case DetailsLayout: {
- // The width will be determined dynamically by KFileItemListView::visibleRoleSizes()
- const qreal height = option.margin * 2 + qMax(option.iconSize, option.fontMetrics.height());
- return QSizeF(-1, height);
- }
-
- default:
- Q_ASSERT(false);
- break;
- }
-
- return QSize();
-}
-
-QHash<QByteArray, QSizeF> KFileItemListView::visibleRolesSizes(const KItemRangeList& itemRanges) const
-{
- QElapsedTimer timer;
- timer.start();
-
- QHash<QByteArray, QSizeF> sizes;
-
- int calculatedItemCount = 0;
- bool maxTimeExceeded = false;
- foreach (const KItemRange& itemRange, itemRanges) {
- const int startIndex = itemRange.index;
- const int endIndex = startIndex + itemRange.count - 1;
-
- for (int i = startIndex; i <= endIndex; ++i) {
- foreach (const QByteArray& visibleRole, visibleRoles()) {
- QSizeF maxSize = sizes.value(visibleRole, QSizeF(0, 0));
- const QSizeF itemSize = visibleRoleSizeHint(i, visibleRole);
- maxSize = maxSize.expandedTo(itemSize);
- sizes.insert(visibleRole, maxSize);
- }
-
- if (calculatedItemCount > 100 && timer.elapsed() > 200) {
- // When having several thousands of items calculating the sizes can get
- // very expensive. We accept a possibly too small role-size in favour
- // of having no blocking user interface.
- #ifdef KFILEITEMLISTVIEW_DEBUG
- kDebug() << "Timer exceeded, stopped after" << calculatedItemCount << "items";
- #endif
- maxTimeExceeded = true;
- break;
- }
- ++calculatedItemCount;
- }
- if (maxTimeExceeded) {
- break;
- }
- }
-
-#ifdef KFILEITEMLISTVIEW_DEBUG
- int rangesItemCount = 0;
- foreach (const KItemRange& itemRange, itemRanges) {
- rangesItemCount += itemRange.count;
- }
- kDebug() << "[TIME] Calculated dynamic item size for " << rangesItemCount << "items:" << timer.elapsed();
-#endif
- return sizes;
-}
-
-bool KFileItemListView::supportsItemExpanding() const
-{
- return m_itemLayout == DetailsLayout;
-}
-
QPixmap KFileItemListView::createDragPixmap(const QSet<int>& indexes) const
{
if (!model()) {
default: Q_ASSERT(false); break;
}
- fileItemListWidget->setAlternatingBackgroundColors(m_itemLayout == DetailsLayout &&
- visibleRoles().count() > 1);
+ fileItemListWidget->setSupportsItemExpanding(supportsItemExpanding());
}
bool KFileItemListView::itemSizeHintUpdateRequired(const QSet<QByteArray>& changedRoles) const
delete m_modelRolesUpdater;
m_modelRolesUpdater = new KFileItemModelRolesUpdater(static_cast<KFileItemModel*>(current), this);
- const int size = styleOption().iconSize;
- m_modelRolesUpdater->setIconSize(QSize(size, size));
+ m_modelRolesUpdater->setIconSize(availableIconSize());
applyRolesToModel();
}
Q_UNUSED(current);
Q_UNUSED(previous);
applyRolesToModel();
-
- if (m_itemLayout == DetailsLayout) {
- // Only enable the alternating background colors if more than one role
- // is visible
- const int previousCount = previous.count();
- const int currentCount = current.count();
- if ((previousCount <= 1 && currentCount > 1) || (previousCount > 1 && currentCount <= 1)) {
- const bool enabled = (currentCount > 1);
- foreach (KItemListWidget* widget, visibleItemListWidgets()) {
- widget->setAlternatingBackgroundColors(enabled);
- }
- }
- }
}
void KFileItemListView::onStyleOptionChanged(const KItemListStyleOption& current, const KItemListStyleOption& previous)
triggerIconSizeUpdate();
}
+void KFileItemListView::onSupportsItemExpandingChanged(bool supportsExpanding)
+{
+ Q_UNUSED(supportsExpanding);
+ applyRolesToModel();
+ updateLayoutOfVisibleItems();
+}
+
void KFileItemListView::onTransactionBegin()
{
m_modelRolesUpdater->setPaused(true);
// of the icon-size before unpausing m_modelRolesUpdater. This prevents
// an unnecessary expensive recreation of all previews afterwards.
m_updateIconSizeTimer->stop();
- const KItemListStyleOption& option = styleOption();
- m_modelRolesUpdater->setIconSize(QSize(option.iconSize, option.iconSize));
+ m_modelRolesUpdater->setIconSize(availableIconSize());
}
m_modelRolesUpdater->setPaused(isTransactionActive());
return;
}
- const KItemListStyleOption& option = styleOption();
- m_modelRolesUpdater->setIconSize(QSize(option.iconSize, option.iconSize));
+ m_modelRolesUpdater->setIconSize(availableIconSize());
if (m_updateVisibleIndexRangeTimer->isActive()) {
// If the visibility-index-range update is pending do an immediate update
updateTimersInterval();
}
-QSizeF KFileItemListView::visibleRoleSizeHint(int index, const QByteArray& role) const
-{
- const KItemListStyleOption& option = styleOption();
-
- qreal width = m_minimumRolesWidths.value(role, 0);
- const qreal height = option.margin * 2 + option.fontMetrics.height();
-
- const QHash<QByteArray, QVariant> values = model()->data(index);
- const QString text = KFileItemListWidget::roleText(role, values);
- if (!text.isEmpty()) {
- const qreal columnMargin = option.margin * 3;
- width = qMax(width, qreal(2 * columnMargin + option.fontMetrics.width(text)));
- }
-
- if (role == "name") {
- // Increase the width by the expansion-toggle and the current expansion level
- const int expansionLevel = values.value("expansionLevel", 0).toInt();
- width += option.margin + expansionLevel * itemSize().height() + KIconLoader::SizeSmall;
-
- // Increase the width by the required space for the icon
- width += option.margin * 2 + option.iconSize;
- }
-
- return QSizeF(width, height);
-}
-
void KFileItemListView::updateLayoutOfVisibleItems()
{
if (!model()) {
m_updateIconSizeTimer->setInterval(interval);
}
-void KFileItemListView::updateMinimumRolesWidths()
-{
- m_minimumRolesWidths.clear();
-
- const KItemListStyleOption& option = styleOption();
- const QString sizeText = QLatin1String("888888") + i18nc("@item:intable", "items");
- m_minimumRolesWidths.insert("size", option.fontMetrics.width(sizeText));
-}
-
void KFileItemListView::applyRolesToModel()
{
if (!model()) {
roles.insert("iconName");
roles.insert("name");
roles.insert("isDir");
- if (m_itemLayout == DetailsLayout) {
+ if (supportsItemExpanding()) {
roles.insert("isExpanded");
- roles.insert("expansionLevel");
+ roles.insert("isExpandable");
+ roles.insert("expandedParentsCount");
}
// Assure that the role that is used for sorting will be determined
m_modelRolesUpdater->setRoles(roles);
}
+QSize KFileItemListView::availableIconSize() const
+{
+ const KItemListStyleOption& option = styleOption();
+ const int iconSize = option.iconSize;
+ if (m_itemLayout == IconsLayout) {
+ const int maxIconWidth = itemSize().width() - 2 * option.padding;
+ return QSize(maxIconWidth, iconSize);
+ }
+
+ return QSize(iconSize, iconSize);
+}
+
#include "kfileitemlistview.moc"
projects / dolphin.git / blobdiff