#include "kitemlistview.h"
+#include "dolphindebug.h"
+#include "kitemlistcontainer.h"
#include "kitemlistcontroller.h"
-#include "kitemlistheader_p.h"
-#include "kitemlistrubberband_p.h"
+#include "kitemlistheader.h"
#include "kitemlistselectionmanager.h"
-#include "kitemlistsizehintresolver_p.h"
-#include "kitemlistviewlayouter_p.h"
-#include "kitemlistviewanimation_p.h"
-#include "kitemlistwidget.h"
+#include "kstandarditemlistwidget.h"
-#include <KDebug>
+#include "private/kitemlistheaderwidget.h"
+#include "private/kitemlistrubberband.h"
+#include "private/kitemlistsizehintresolver.h"
+#include "private/kitemlistviewlayouter.h"
+#include "private/kitemlistviewanimation.h"
-#include <QCursor>
#include <QGraphicsSceneMouseEvent>
+#include <QGraphicsView>
#include <QPainter>
-#include <QPropertyAnimation>
#include <QStyle>
#include <QStyleOptionRubberBand>
#include <QTimer>
+#include <QElapsedTimer>
+
+#include <algorithm>
+
+#include "kitemlistviewaccessible.h"
namespace {
// Time in ms until reaching the autoscroll margin triggers
const int RepeatingAutoScrollDelay = 1000 / 60;
}
+#ifndef QT_NO_ACCESSIBILITY
+QAccessibleInterface* accessibleInterfaceFactory(const QString& key, QObject* object)
+{
+ Q_UNUSED(key)
+
+ if (KItemListContainer* container = qobject_cast<KItemListContainer*>(object)) {
+ return new KItemListContainerAccessible(container);
+ } else if (KItemListView* view = qobject_cast<KItemListView*>(object)) {
+ return new KItemListViewAccessible(view);
+ }
+
+ return 0;
+}
+#endif
+
KItemListView::KItemListView(QGraphicsWidget* parent) :
QGraphicsWidget(parent),
m_enabledSelectionToggles(false),
m_grouped(false),
+ m_supportsItemExpanding(false),
+ m_editingRole(false),
m_activeTransactions(0),
+ m_endTransactionAnimationHint(Animation),
m_itemSize(),
m_controller(0),
m_model(0),
m_visibleRoles(),
- m_visibleRolesSizes(),
- m_stretchedVisibleRolesSizes(),
m_widgetCreator(0),
m_groupHeaderCreator(0),
m_styleOption(),
m_visibleItems(),
m_visibleGroups(),
+ m_visibleCells(),
m_sizeHintResolver(0),
m_layouter(0),
m_animation(0),
m_autoScrollIncrement(0),
m_autoScrollTimer(0),
m_header(0),
- m_useHeaderWidths(false)
+ m_headerWidget(0),
+ m_dropIndicator()
{
setAcceptHoverEvents(true);
m_sizeHintResolver = new KItemListSizeHintResolver(this);
- m_layouter = new KItemListViewLayouter(this);
- m_layouter->setSizeHintResolver(m_sizeHintResolver);
+ m_layouter = new KItemListViewLayouter(m_sizeHintResolver, this);
m_animation = new KItemListViewAnimation(this);
- connect(m_animation, SIGNAL(finished(QGraphicsWidget*,KItemListViewAnimation::AnimationType)),
- this, SLOT(slotAnimationFinished(QGraphicsWidget*,KItemListViewAnimation::AnimationType)));
+ connect(m_animation, &KItemListViewAnimation::finished,
+ this, &KItemListView::slotAnimationFinished);
m_layoutTimer = new QTimer(this);
m_layoutTimer->setInterval(300);
m_layoutTimer->setSingleShot(true);
- connect(m_layoutTimer, SIGNAL(timeout()), this, SLOT(slotLayoutTimerFinished()));
+ connect(m_layoutTimer, &QTimer::timeout, this, &KItemListView::slotLayoutTimerFinished);
m_rubberBand = new KItemListRubberBand(this);
- connect(m_rubberBand, SIGNAL(activationChanged(bool)), this, SLOT(slotRubberBandActivationChanged(bool)));
-}
-
-KItemListView::~KItemListView()
-{
- delete m_sizeHintResolver;
- m_sizeHintResolver = 0;
-}
-
-void KItemListView::setScrollOrientation(Qt::Orientation orientation)
-{
- const Qt::Orientation previousOrientation = m_layouter->scrollOrientation();
- if (orientation == previousOrientation) {
- return;
- }
-
- m_layouter->setScrollOrientation(orientation);
- m_animation->setScrollOrientation(orientation);
- m_sizeHintResolver->clearCache();
+ connect(m_rubberBand, &KItemListRubberBand::activationChanged, this, &KItemListView::slotRubberBandActivationChanged);
- if (m_grouped) {
- QMutableHashIterator<KItemListWidget*, KItemListGroupHeader*> it (m_visibleGroups);
- while (it.hasNext()) {
- it.next();
- it.value()->setScrollOrientation(orientation);
- }
- }
+ m_headerWidget = new KItemListHeaderWidget(this);
+ m_headerWidget->setVisible(false);
- doLayout(NoAnimation);
+ m_header = new KItemListHeader(this);
- onScrollOrientationChanged(orientation, previousOrientation);
- emit scrollOrientationChanged(orientation, previousOrientation);
-}
+#ifndef QT_NO_ACCESSIBILITY
+ QAccessible::installFactory(accessibleInterfaceFactory);
+#endif
-Qt::Orientation KItemListView::scrollOrientation() const
-{
- return m_layouter->scrollOrientation();
}
-void KItemListView::setItemSize(const QSizeF& itemSize)
+KItemListView::~KItemListView()
{
- const QSizeF previousSize = m_itemSize;
- if (itemSize == previousSize) {
- return;
- }
-
- // Skip animations when the number of rows or columns
- // are changed in the grid layout. Although the animation
- // engine can handle this usecase, it looks obtrusive.
- const bool animate = !changesItemGridLayout(m_layouter->size(), itemSize);
-
- m_itemSize = itemSize;
+ // The group headers are children of the widgets created by
+ // widgetCreator(). So it is mandatory to delete the group headers
+ // first.
+ delete m_groupHeaderCreator;
+ m_groupHeaderCreator = 0;
- if (itemSize.isEmpty()) {
- updateVisibleRolesSizes();
- } else {
- m_layouter->setItemSize(itemSize);
- }
-
- m_sizeHintResolver->clearCache();
- doLayout(animate ? Animation : NoAnimation);
- onItemSizeChanged(itemSize, previousSize);
-}
+ delete m_widgetCreator;
+ m_widgetCreator = 0;
-QSizeF KItemListView::itemSize() const
-{
- return m_itemSize;
+ delete m_sizeHintResolver;
+ m_sizeHintResolver = 0;
}
void KItemListView::setScrollOffset(qreal offset)
}
m_layouter->setItemOffset(offset);
- if (m_header) {
- m_header->setPos(-offset, 0);
+ if (m_headerWidget->isVisible()) {
+ m_headerWidget->setOffset(offset);
}
// Don't check whether the m_layoutTimer is active: Changing the
return m_layouter->maximumItemOffset();
}
+int KItemListView::maximumVisibleItems() const
+{
+ return m_layouter->maximumVisibleItems();
+}
+
void KItemListView::setVisibleRoles(const QList<QByteArray>& roles)
{
const QList<QByteArray> previousRoles = m_visibleRoles;
m_visibleRoles = roles;
+ onVisibleRolesChanged(roles, previousRoles);
+
+ m_sizeHintResolver->clearCache();
+ m_layouter->markAsDirty();
+
+ if (m_itemSize.isEmpty()) {
+ m_headerWidget->setColumns(roles);
+ updatePreferredColumnWidths();
+ if (!m_headerWidget->automaticColumnResizing()) {
+ // The column-width of new roles are still 0. Apply the preferred
+ // column-width as default with.
+ foreach (const QByteArray& role, m_visibleRoles) {
+ if (m_headerWidget->columnWidth(role) == 0) {
+ const qreal width = m_headerWidget->preferredColumnWidth(role);
+ m_headerWidget->setColumnWidth(role, width);
+ }
+ }
+
+ applyColumnWidthsFromHeader();
+ }
+ }
+
+ const bool alternateBackgroundsChanged = m_itemSize.isEmpty() &&
+ ((roles.count() > 1 && previousRoles.count() <= 1) ||
+ (roles.count() <= 1 && previousRoles.count() > 1));
QHashIterator<int, KItemListWidget*> it(m_visibleItems);
while (it.hasNext()) {
it.next();
KItemListWidget* widget = it.value();
widget->setVisibleRoles(roles);
- widget->setVisibleRolesSizes(m_stretchedVisibleRolesSizes);
- }
-
- m_sizeHintResolver->clearCache();
- m_layouter->markAsDirty();
-
- if (m_header) {
- m_header->setVisibleRoles(roles);
- m_header->setVisibleRolesWidths(headerRolesWidths());
- m_useHeaderWidths = false;
+ if (alternateBackgroundsChanged) {
+ updateAlternateBackgroundForWidget(widget);
+ }
}
- updateVisibleRolesSizes();
doLayout(NoAnimation);
-
- onVisibleRolesChanged(roles, previousRoles);
}
QList<QByteArray> KItemListView::visibleRoles() const
{
if (enabled && !m_autoScrollTimer) {
m_autoScrollTimer = new QTimer(this);
- m_autoScrollTimer->setSingleShot(false);
- connect(m_autoScrollTimer, SIGNAL(timeout()), this, SLOT(triggerAutoScrolling()));
+ m_autoScrollTimer->setSingleShot(true);
+ connect(m_autoScrollTimer, &QTimer::timeout, this, &KItemListView::triggerAutoScrolling);
m_autoScrollTimer->start(InitialAutoScrollDelay);
} else if (!enabled && m_autoScrollTimer) {
delete m_autoScrollTimer;
m_autoScrollTimer = 0;
}
-
}
bool KItemListView::autoScroll() const
void KItemListView::setWidgetCreator(KItemListWidgetCreatorBase* widgetCreator)
{
+ delete m_widgetCreator;
m_widgetCreator = widgetCreator;
}
KItemListWidgetCreatorBase* KItemListView::widgetCreator() const
{
+ if (!m_widgetCreator) {
+ m_widgetCreator = defaultWidgetCreator();
+ }
return m_widgetCreator;
}
void KItemListView::setGroupHeaderCreator(KItemListGroupHeaderCreatorBase* groupHeaderCreator)
{
+ delete m_groupHeaderCreator;
m_groupHeaderCreator = groupHeaderCreator;
}
KItemListGroupHeaderCreatorBase* KItemListView::groupHeaderCreator() const
{
+ if (!m_groupHeaderCreator) {
+ m_groupHeaderCreator = defaultGroupHeaderCreator();
+ }
return m_groupHeaderCreator;
}
-void KItemListView::setStyleOption(const KItemListStyleOption& option)
+QSizeF KItemListView::itemSize() const
{
- const KItemListStyleOption previousOption = m_styleOption;
- m_styleOption = option;
-
- QHashIterator<int, KItemListWidget*> it(m_visibleItems);
- while (it.hasNext()) {
- it.next();
- it.value()->setStyleOption(option);
- }
+ return m_itemSize;
+}
- m_sizeHintResolver->clearCache();
- doLayout(Animation);
- onStyleOptionChanged(option, previousOption);
+QSizeF KItemListView::itemSizeHint() const
+{
+ return m_sizeHintResolver->maxSizeHint();
}
const KItemListStyleOption& KItemListView::styleOption() const
const QSizeF newSize = rect.size();
if (m_itemSize.isEmpty()) {
- // The item size is dynamic:
- // Changing the geometry does not require to do an expensive
- // update of the visible-roles sizes, only the stretched sizes
- // need to be adjusted to the new size.
- updateStretchedVisibleRolesSizes();
-
- if (m_useHeaderWidths) {
- QSizeF dynamicItemSize = m_layouter->itemSize();
-
- if (m_itemSize.width() < 0) {
- const qreal requiredWidth = visibleRolesSizesWidthSum();
- if (newSize.width() > requiredWidth) {
- dynamicItemSize.setWidth(newSize.width());
- }
- const qreal headerWidth = qMax(newSize.width(), requiredWidth);
- m_header->resize(headerWidth, m_header->size().height());
- }
-
- if (m_itemSize.height() < 0) {
- const qreal requiredHeight = visibleRolesSizesHeightSum();
- if (newSize.height() > requiredHeight) {
- dynamicItemSize.setHeight(newSize.height());
- }
- // TODO: KItemListHeader is not prepared for vertical alignment
- }
-
+ m_headerWidget->resize(rect.width(), m_headerWidget->size().height());
+ if (m_headerWidget->automaticColumnResizing()) {
+ applyAutomaticColumnWidths();
+ } else {
+ const qreal requiredWidth = columnWidthsSum();
+ const QSizeF dynamicItemSize(qMax(newSize.width(), requiredWidth),
+ m_itemSize.height());
m_layouter->setItemSize(dynamicItemSize);
}
-
+
// Triggering a synchronous layout is fine from a performance point of view,
// as with dynamic item sizes no moving animation must be done.
m_layouter->setSize(newSize);
- doLayout(Animation);
+ doLayout(NoAnimation);
} else {
- const bool animate = !changesItemGridLayout(newSize, m_layouter->itemSize());
+ const bool animate = !changesItemGridLayout(newSize,
+ m_layouter->itemSize(),
+ m_layouter->itemMargin());
m_layouter->setSize(newSize);
-
+
if (animate) {
// Trigger an asynchronous relayout with m_layoutTimer to prevent
// performance bottlenecks. If the timer is exceeded, an animated layout
}
}
+qreal KItemListView::verticalPageStep() const
+{
+ qreal headerHeight = 0;
+ if (m_headerWidget->isVisible()) {
+ headerHeight = m_headerWidget->size().height();
+ }
+ return size().height() - headerHeight;
+}
+
int KItemListView::itemAt(const QPointF& pos) const
{
QHashIterator<int, KItemListWidget*> it(m_visibleItems);
return false;
}
+bool KItemListView::isAboveText(int index, const QPointF &pos) const
+{
+ const KItemListWidget* widget = m_visibleItems.value(index);
+ if (widget) {
+ const QRectF &textRect = widget->textRect();
+ if (!textRect.isEmpty()) {
+ const QPointF mappedPos = widget->mapFromItem(this, pos);
+ return textRect.contains(mappedPos);
+ }
+ }
+ return false;
+}
+
int KItemListView::firstVisibleIndex() const
{
return m_layouter->firstVisibleIndex();
return m_layouter->lastVisibleIndex();
}
-QSizeF KItemListView::itemSizeHint(int index) const
+void KItemListView::calculateItemSizeHints(QVector<qreal>& logicalHeightHints, qreal& logicalWidthHint) const
{
- Q_UNUSED(index);
- return itemSize();
+ widgetCreator()->calculateItemSizeHints(logicalHeightHints, logicalWidthHint, this);
}
-QHash<QByteArray, QSizeF> KItemListView::visibleRolesSizes(const KItemRangeList& itemRanges) const
+void KItemListView::setSupportsItemExpanding(bool supportsExpanding)
{
- Q_UNUSED(itemRanges);
- return QHash<QByteArray, QSizeF>();
+ if (m_supportsItemExpanding != supportsExpanding) {
+ m_supportsItemExpanding = supportsExpanding;
+ updateSiblingsInformation();
+ onSupportsItemExpandingChanged(supportsExpanding);
+ }
}
bool KItemListView::supportsItemExpanding() const
{
- return false;
+ return m_supportsItemExpanding;
}
QRectF KItemListView::itemRect(int index) const
void KItemListView::scrollToItem(int index)
{
QRectF viewGeometry = geometry();
- if (m_header) {
- const qreal headerHeight = m_header->size().height();
+ if (m_headerWidget->isVisible()) {
+ const qreal headerHeight = m_headerWidget->size().height();
viewGeometry.adjust(0, headerHeight, 0, 0);
}
- const QRectF currentRect = itemRect(index);
+ QRectF currentRect = itemRect(index);
+
+ // Fix for Bug 311099 - View the underscore when using Ctrl + PagDown
+ currentRect.adjust(-m_styleOption.horizontalMargin, -m_styleOption.verticalMargin,
+ m_styleOption.horizontalMargin, m_styleOption.verticalMargin);
if (!viewGeometry.contains(currentRect)) {
qreal newOffset = scrollOffset();
--m_activeTransactions;
if (m_activeTransactions < 0) {
m_activeTransactions = 0;
- kWarning() << "Mismatch between beginTransaction()/endTransaction()";
+ qCWarning(DolphinDebug) << "Mismatch between beginTransaction()/endTransaction()";
}
if (m_activeTransactions == 0) {
onTransactionEnd();
- doLayout(NoAnimation);
+ doLayout(m_endTransactionAnimationHint);
+ m_endTransactionAnimationHint = Animation;
}
}
return m_activeTransactions > 0;
}
+void KItemListView::setHeaderVisible(bool visible)
+{
+ if (visible && !m_headerWidget->isVisible()) {
+ QStyleOptionHeader option;
+ const QSize headerSize = style()->sizeFromContents(QStyle::CT_HeaderSection,
+ &option, QSize());
+
+ m_headerWidget->setPos(0, 0);
+ m_headerWidget->resize(size().width(), headerSize.height());
+ m_headerWidget->setModel(m_model);
+ m_headerWidget->setColumns(m_visibleRoles);
+ m_headerWidget->setZValue(1);
+
+ connect(m_headerWidget, &KItemListHeaderWidget::columnWidthChanged,
+ this, &KItemListView::slotHeaderColumnWidthChanged);
+ connect(m_headerWidget, &KItemListHeaderWidget::columnMoved,
+ this, &KItemListView::slotHeaderColumnMoved);
+ connect(m_headerWidget, &KItemListHeaderWidget::sortOrderChanged,
+ this, &KItemListView::sortOrderChanged);
+ connect(m_headerWidget, &KItemListHeaderWidget::sortRoleChanged,
+ this, &KItemListView::sortRoleChanged);
+
+ m_layouter->setHeaderHeight(headerSize.height());
+ m_headerWidget->setVisible(true);
+ } else if (!visible && m_headerWidget->isVisible()) {
+ disconnect(m_headerWidget, &KItemListHeaderWidget::columnWidthChanged,
+ this, &KItemListView::slotHeaderColumnWidthChanged);
+ disconnect(m_headerWidget, &KItemListHeaderWidget::columnMoved,
+ this, &KItemListView::slotHeaderColumnMoved);
+ disconnect(m_headerWidget, &KItemListHeaderWidget::sortOrderChanged,
+ this, &KItemListView::sortOrderChanged);
+ disconnect(m_headerWidget, &KItemListHeaderWidget::sortRoleChanged,
+ this, &KItemListView::sortRoleChanged);
-void KItemListView::setHeaderShown(bool show)
-{
+ m_layouter->setHeaderHeight(0);
+ m_headerWidget->setVisible(false);
+ }
+}
- if (show && !m_header) {
- m_header = new KItemListHeader(this);
- m_header->setPos(0, 0);
- m_header->setModel(m_model);
- m_header->setVisibleRoles(m_visibleRoles);
- m_header->setVisibleRolesWidths(headerRolesWidths());
- m_header->setZValue(1);
+bool KItemListView::isHeaderVisible() const
+{
+ return m_headerWidget->isVisible();
+}
- connect(m_header, SIGNAL(visibleRoleWidthChanged(QByteArray,qreal,qreal)),
- this, SLOT(slotVisibleRoleWidthChanged(QByteArray,qreal,qreal)));
- connect(m_header, SIGNAL(sortOrderChanged(Qt::SortOrder,Qt::SortOrder)),
- this, SIGNAL(sortOrderChanged(Qt::SortOrder,Qt::SortOrder)));
- connect(m_header, SIGNAL(sortRoleChanged(QByteArray,QByteArray)),
- this, SIGNAL(sortRoleChanged(QByteArray,QByteArray)));
+KItemListHeader* KItemListView::header() const
+{
+ return m_header;
+}
- m_useHeaderWidths = false;
+QPixmap KItemListView::createDragPixmap(const KItemSet& indexes) const
+{
+ QPixmap pixmap;
- m_layouter->setHeaderHeight(m_header->size().height());
- } else if (!show && m_header) {
- delete m_header;
- m_header = 0;
- m_useHeaderWidths = false;
- m_layouter->setHeaderHeight(0);
+ if (indexes.count() == 1) {
+ KItemListWidget* item = m_visibleItems.value(indexes.first());
+ QGraphicsView* graphicsView = scene()->views()[0];
+ if (item && graphicsView) {
+ pixmap = item->createDragPixmap(0, graphicsView);
+ }
+ } else {
+ // TODO: Not implemented yet. Probably extend the interface
+ // from KItemListWidget::createDragPixmap() to return a pixmap
+ // that can be used for multiple indexes.
}
-}
-bool KItemListView::isHeaderShown() const
-{
- return m_header != 0;
+ return pixmap;
}
-QPixmap KItemListView::createDragPixmap(const QSet<int>& indexes) const
+void KItemListView::editRole(int index, const QByteArray& role)
{
- Q_UNUSED(indexes);
- return QPixmap();
+ KStandardItemListWidget* widget = qobject_cast<KStandardItemListWidget *>(m_visibleItems.value(index));
+ if (!widget || m_editingRole) {
+ return;
+ }
+
+ m_editingRole = true;
+ widget->setEditedRole(role);
+
+ connect(widget, &KItemListWidget::roleEditingCanceled,
+ this, &KItemListView::slotRoleEditingCanceled);
+ connect(widget, &KItemListWidget::roleEditingFinished,
+ this, &KItemListView::slotRoleEditingFinished);
+
+ connect(this, &KItemListView::scrollOffsetChanged,
+ widget, &KStandardItemListWidget::finishRoleEditing);
}
void KItemListView::paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget)
opt.rect = rubberBandRect.toRect();
style()->drawControl(QStyle::CE_RubberBand, &opt, painter);
}
+
+ if (!m_dropIndicator.isEmpty()) {
+ const QRectF r = m_dropIndicator.toRect();
+
+ QColor color = palette().brush(QPalette::Normal, QPalette::Highlight).color();
+ painter->setPen(color);
+
+ // TODO: The following implementation works only for a vertical scroll-orientation
+ // and assumes a height of the m_draggingInsertIndicator of 1.
+ Q_ASSERT(r.height() == 1);
+ painter->drawLine(r.left() + 1, r.top(), r.right() - 1, r.top());
+
+ color.setAlpha(128);
+ painter->setPen(color);
+ painter->drawRect(r.left(), r.top() - 1, r.width() - 1, 2);
+ }
+}
+
+QVariant KItemListView::itemChange(GraphicsItemChange change, const QVariant &value)
+{
+ if (change == QGraphicsItem::ItemSceneHasChanged && scene()) {
+ if (!scene()->views().isEmpty()) {
+ m_styleOption.palette = scene()->views().at(0)->palette();
+ }
+ }
+ return QGraphicsItem::itemChange(change, value);
+}
+
+void KItemListView::setItemSize(const QSizeF& size)
+{
+ const QSizeF previousSize = m_itemSize;
+ if (size == previousSize) {
+ return;
+ }
+
+ // Skip animations when the number of rows or columns
+ // are changed in the grid layout. Although the animation
+ // engine can handle this usecase, it looks obtrusive.
+ const bool animate = !changesItemGridLayout(m_layouter->size(),
+ size,
+ m_layouter->itemMargin());
+
+ const bool alternateBackgroundsChanged = (m_visibleRoles.count() > 1) &&
+ (( m_itemSize.isEmpty() && !size.isEmpty()) ||
+ (!m_itemSize.isEmpty() && size.isEmpty()));
+
+ m_itemSize = size;
+
+ if (alternateBackgroundsChanged) {
+ // For an empty item size alternate backgrounds are drawn if more than
+ // one role is shown. Assure that the backgrounds for visible items are
+ // updated when changing the size in this context.
+ updateAlternateBackgrounds();
+ }
+
+ if (size.isEmpty()) {
+ if (m_headerWidget->automaticColumnResizing()) {
+ updatePreferredColumnWidths();
+ } else {
+ // Only apply the changed height and respect the header widths
+ // set by the user
+ const qreal currentWidth = m_layouter->itemSize().width();
+ const QSizeF newSize(currentWidth, size.height());
+ m_layouter->setItemSize(newSize);
+ }
+ } else {
+ m_layouter->setItemSize(size);
+ }
+
+ m_sizeHintResolver->clearCache();
+ doLayout(animate ? Animation : NoAnimation);
+ onItemSizeChanged(size, previousSize);
+}
+
+void KItemListView::setStyleOption(const KItemListStyleOption& option)
+{
+ const KItemListStyleOption previousOption = m_styleOption;
+ m_styleOption = option;
+
+ bool animate = true;
+ const QSizeF margin(option.horizontalMargin, option.verticalMargin);
+ if (margin != m_layouter->itemMargin()) {
+ // Skip animations when the number of rows or columns
+ // are changed in the grid layout. Although the animation
+ // engine can handle this usecase, it looks obtrusive.
+ animate = !changesItemGridLayout(m_layouter->size(),
+ m_layouter->itemSize(),
+ margin);
+ m_layouter->setItemMargin(margin);
+ }
+
+ if (m_grouped) {
+ updateGroupHeaderHeight();
+ }
+
+ if (animate &&
+ (previousOption.maxTextLines != option.maxTextLines || previousOption.maxTextWidth != option.maxTextWidth)) {
+ // Animating a change of the maximum text size just results in expensive
+ // temporary eliding and clipping operations and does not look good visually.
+ animate = false;
+ }
+
+ QHashIterator<int, KItemListWidget*> it(m_visibleItems);
+ while (it.hasNext()) {
+ it.next();
+ it.value()->setStyleOption(option);
+ }
+
+ m_sizeHintResolver->clearCache();
+ m_layouter->markAsDirty();
+ doLayout(animate ? Animation : NoAnimation);
+
+ if (m_itemSize.isEmpty()) {
+ updatePreferredColumnWidths();
+ }
+
+ onStyleOptionChanged(option, previousOption);
+}
+
+void KItemListView::setScrollOrientation(Qt::Orientation orientation)
+{
+ const Qt::Orientation previousOrientation = m_layouter->scrollOrientation();
+ if (orientation == previousOrientation) {
+ return;
+ }
+
+ m_layouter->setScrollOrientation(orientation);
+ m_animation->setScrollOrientation(orientation);
+ m_sizeHintResolver->clearCache();
+
+ if (m_grouped) {
+ QMutableHashIterator<KItemListWidget*, KItemListGroupHeader*> it (m_visibleGroups);
+ while (it.hasNext()) {
+ it.next();
+ it.value()->setScrollOrientation(orientation);
+ }
+ updateGroupHeaderHeight();
+
+ }
+
+ doLayout(NoAnimation);
+
+ onScrollOrientationChanged(orientation, previousOrientation);
+ emit scrollOrientationChanged(orientation, previousOrientation);
+}
+
+Qt::Orientation KItemListView::scrollOrientation() const
+{
+ return m_layouter->scrollOrientation();
+}
+
+KItemListWidgetCreatorBase* KItemListView::defaultWidgetCreator() const
+{
+ return 0;
+}
+
+KItemListGroupHeaderCreatorBase* KItemListView::defaultGroupHeaderCreator() const
+{
+ return 0;
}
void KItemListView::initializeItemListWidget(KItemListWidget* item)
Q_UNUSED(previous);
}
+void KItemListView::onSupportsItemExpandingChanged(bool supportsExpanding)
+{
+ Q_UNUSED(supportsExpanding);
+}
+
void KItemListView::onTransactionBegin()
{
}
bool KItemListView::event(QEvent* event)
{
- // Forward all events to the controller and handle them there
- if (m_controller && m_controller->processEvent(event, transform())) {
- event->accept();
- return true;
+ switch (event->type()) {
+ case QEvent::PaletteChange:
+ updatePalette();
+ break;
+
+ case QEvent::FontChange:
+ updateFont();
+ break;
+
+ default:
+ // Forward all other events to the controller and handle them there
+ if (!m_editingRole && m_controller && m_controller->processEvent(event, transform())) {
+ event->accept();
+ return true;
+ }
}
+
return QGraphicsWidget::event(event);
}
setAutoScroll(true);
}
-void KItemListView::dragMoveEvent(QGraphicsSceneDragDropEvent *event)
+void KItemListView::dragMoveEvent(QGraphicsSceneDragDropEvent* event)
{
QGraphicsWidget::dragMoveEvent(event);
}
}
-void KItemListView::dragLeaveEvent(QGraphicsSceneDragDropEvent *event)
+void KItemListView::dragLeaveEvent(QGraphicsSceneDragDropEvent* event)
{
QGraphicsWidget::dragLeaveEvent(event);
setAutoScroll(false);
return m_visibleItems.values();
}
-void KItemListView::slotItemsInserted(const KItemRangeList& itemRanges)
+void KItemListView::updateFont()
{
- updateVisibleRolesSizes(itemRanges);
+ if (scene() && !scene()->views().isEmpty()) {
+ KItemListStyleOption option = styleOption();
+ option.font = scene()->views().first()->font();
+ option.fontMetrics = QFontMetrics(option.font);
- const bool hasMultipleRanges = (itemRanges.count() > 1);
- if (hasMultipleRanges) {
- beginTransaction();
+ setStyleOption(option);
+ }
+}
+
+void KItemListView::updatePalette()
+{
+ if (scene() && !scene()->views().isEmpty()) {
+ KItemListStyleOption option = styleOption();
+ option.palette = scene()->views().first()->palette();
+
+ setStyleOption(option);
+ }
+}
+
+void KItemListView::slotItemsInserted(const KItemRangeList& itemRanges)
+{
+ if (m_itemSize.isEmpty()) {
+ updatePreferredColumnWidths(itemRanges);
}
+ const bool hasMultipleRanges = (itemRanges.count() > 1);
+ if (hasMultipleRanges) {
+ beginTransaction();
+ }
+
+ m_layouter->markAsDirty();
+
+ m_sizeHintResolver->itemsInserted(itemRanges);
+
int previouslyInsertedCount = 0;
foreach (const KItemRange& range, itemRanges) {
// range.index is related to the model before anything has been inserted.
const int index = range.index + previouslyInsertedCount;
const int count = range.count;
if (index < 0 || count <= 0) {
- kWarning() << "Invalid item range (index:" << index << ", count:" << count << ")";
+ qCWarning(DolphinDebug) << "Invalid item range (index:" << index << ", count:" << count << ")";
continue;
}
previouslyInsertedCount += count;
- m_sizeHintResolver->itemsInserted(index, count);
-
// Determine which visible items must be moved
QList<int> itemsToMove;
QHashIterator<int, KItemListWidget*> it(m_visibleItems);
for (int i = itemsToMove.count() - 1; i >= 0; --i) {
KItemListWidget* widget = m_visibleItems.value(itemsToMove[i]);
Q_ASSERT(widget);
- setWidgetIndex(widget, widget->index() + count);
+ const int newIndex = widget->index() + count;
+ if (hasMultipleRanges) {
+ setWidgetIndex(widget, newIndex);
+ } else {
+ // Try to animate the moving of the item
+ moveWidgetToIndex(widget, newIndex);
+ }
}
- m_layouter->markAsDirty();
if (m_model->count() == count && m_activeTransactions == 0) {
// Check whether a scrollbar is required to show the inserted items. In this case
// the size of the layouter will be decreased before calling doLayout(): This prevents
(!verticalScrollOrientation && maximumScrollOffset() > size().width());
if (decreaseLayouterSize) {
const int scrollBarExtent = style()->pixelMetric(QStyle::PM_ScrollBarExtent);
+
+ int scrollbarSpacing = 0;
+ if (style()->styleHint(QStyle::SH_ScrollView_FrameOnlyAroundContents)) {
+ scrollbarSpacing = style()->pixelMetric(QStyle::PM_ScrollView_ScrollBarSpacing);
+ }
+
QSizeF layouterSize = m_layouter->size();
if (verticalScrollOrientation) {
- layouterSize.rwidth() -= scrollBarExtent;
+ layouterSize.rwidth() -= scrollBarExtent + scrollbarSpacing;
} else {
- layouterSize.rheight() -= scrollBarExtent;
+ layouterSize.rheight() -= scrollBarExtent + scrollbarSpacing;
}
m_layouter->setSize(layouterSize);
}
if (!hasMultipleRanges) {
doLayout(animateChangedItemCount(count) ? Animation : NoAnimation, index, count);
+ updateSiblingsInformation();
}
}
}
if (hasMultipleRanges) {
+ m_endTransactionAnimationHint = NoAnimation;
endTransaction();
+
+ updateSiblingsInformation();
+ }
+
+ if (m_grouped && (hasMultipleRanges || itemRanges.first().count < m_model->count())) {
+ // In case if items of the same group have been inserted before an item that
+ // currently represents the first item of the group, the group header of
+ // this item must be removed.
+ updateVisibleGroupHeaders();
+ }
+
+ if (useAlternateBackgrounds()) {
+ updateAlternateBackgrounds();
}
}
void KItemListView::slotItemsRemoved(const KItemRangeList& itemRanges)
{
- updateVisibleRolesSizes();
+ if (m_itemSize.isEmpty()) {
+ // Don't pass the item-range: The preferred column-widths of
+ // all items must be adjusted when removing items.
+ updatePreferredColumnWidths();
+ }
const bool hasMultipleRanges = (itemRanges.count() > 1);
if (hasMultipleRanges) {
beginTransaction();
}
+ m_layouter->markAsDirty();
+
+ m_sizeHintResolver->itemsRemoved(itemRanges);
+
for (int i = itemRanges.count() - 1; i >= 0; --i) {
- const KItemRange& range = itemRanges.at(i);
+ const KItemRange& range = itemRanges[i];
const int index = range.index;
const int count = range.count;
if (index < 0 || count <= 0) {
- kWarning() << "Invalid item range (index:" << index << ", count:" << count << ")";
+ qCWarning(DolphinDebug) << "Invalid item range (index:" << index << ", count:" << count << ")";
continue;
}
- m_sizeHintResolver->itemsRemoved(index, count);
-
const int firstRemovedIndex = index;
const int lastRemovedIndex = index + count - 1;
- const int lastIndex = m_model->count() + count - 1;
+
+ // Remember which items have to be moved because they are behind the removed range.
+ QVector<int> itemsToMove;
// Remove all KItemListWidget instances that got deleted
- for (int i = firstRemovedIndex; i <= lastRemovedIndex; ++i) {
- KItemListWidget* widget = m_visibleItems.value(i);
- if (!widget) {
+ foreach (KItemListWidget* widget, m_visibleItems) {
+ const int i = widget->index();
+ if (i < firstRemovedIndex) {
+ continue;
+ } else if (i > lastRemovedIndex) {
+ itemsToMove.append(i);
continue;
}
}
// Update the indexes of all KItemListWidget instances that are located
- // after the deleted items
- for (int i = lastRemovedIndex + 1; i <= lastIndex; ++i) {
+ // after the deleted items. It is important to update them in ascending
+ // order to prevent overlaps when setting the new index.
+ std::sort(itemsToMove.begin(), itemsToMove.end());
+ foreach (int i, itemsToMove) {
KItemListWidget* widget = m_visibleItems.value(i);
- if (widget) {
- const int newIndex = i - count;
+ Q_ASSERT(widget);
+ const int newIndex = i - count;
+ if (hasMultipleRanges) {
setWidgetIndex(widget, newIndex);
+ } else {
+ // Try to animate the moving of the item
+ moveWidgetToIndex(widget, newIndex);
}
}
- m_layouter->markAsDirty();
if (!hasMultipleRanges) {
// The decrease-layout-size optimization in KItemListView::slotItemsInserted()
// assumes an updated geometry. If items are removed during an active transaction,
// geometry update if necessary.
const int activeTransactions = m_activeTransactions;
m_activeTransactions = 0;
- doLayout(animateChangedItemCount(count) ? Animation : NoAnimation, index, -count);
+ doLayout(animateChangedItemCount(count) ? Animation : NoAnimation, index, -count);
m_activeTransactions = activeTransactions;
+ updateSiblingsInformation();
}
}
}
if (hasMultipleRanges) {
+ m_endTransactionAnimationHint = NoAnimation;
endTransaction();
+ updateSiblingsInformation();
+ }
+
+ if (m_grouped && (hasMultipleRanges || m_model->count() > 0)) {
+ // In case if the first item of a group has been removed, the group header
+ // must be applied to the next visible item.
+ updateVisibleGroupHeaders();
+ }
+
+ if (useAlternateBackgrounds()) {
+ updateAlternateBackgrounds();
}
}
void KItemListView::slotItemsMoved(const KItemRange& itemRange, const QList<int>& movedToIndexes)
{
- m_sizeHintResolver->itemsMoved(itemRange.index, itemRange.count);
+ m_sizeHintResolver->itemsMoved(itemRange, movedToIndexes);
m_layouter->markAsDirty();
if (m_controller) {
KItemListWidget* widget = m_visibleItems.value(index);
if (widget) {
updateWidgetProperties(widget, index);
- if (m_grouped) {
- updateGroupHeaderForWidget(widget);
- }
initializeItemListWidget(widget);
}
}
doLayout(NoAnimation);
+ updateSiblingsInformation();
}
void KItemListView::slotItemsChanged(const KItemRangeList& itemRanges,
const QSet<QByteArray>& roles)
{
const bool updateSizeHints = itemSizeHintUpdateRequired(roles);
- if (updateSizeHints) {
- updateVisibleRolesSizes(itemRanges);
+ if (updateSizeHints && m_itemSize.isEmpty()) {
+ updatePreferredColumnWidths(itemRanges);
}
foreach (const KItemRange& itemRange, itemRanges) {
updateVisibleGroupHeaders();
doLayout(NoAnimation);
}
+
+ QAccessibleTableModelChangeEvent ev(this, QAccessibleTableModelChangeEvent::DataChanged);
+ ev.setFirstRow(itemRange.index);
+ ev.setLastRow(itemRange.index + itemRange.count);
+ QAccessible::updateAccessibility(&ev);
}
}
+void KItemListView::slotGroupsChanged()
+{
+ updateVisibleGroupHeaders();
+ doLayout(NoAnimation);
+ updateSiblingsInformation();
+}
+
void KItemListView::slotGroupedSortingChanged(bool current)
{
m_grouped = current;
m_layouter->markAsDirty();
if (m_grouped) {
- // Apply the height of the header to the layouter
- const qreal groupHeaderHeight = m_styleOption.fontMetrics.height() +
- m_styleOption.margin * 2;
- m_layouter->setGroupHeaderHeight(groupHeaderHeight);
-
- updateVisibleGroupHeaders();
+ updateGroupHeaderHeight();
} else {
- // Clear all visible headers
- QMutableHashIterator<KItemListWidget*, KItemListGroupHeader*> it (m_visibleGroups);
+ // Clear all visible headers. Note that the QHashIterator takes a copy of
+ // m_visibleGroups. Therefore, it remains valid even if items are removed
+ // from m_visibleGroups in recycleGroupHeaderForWidget().
+ QHashIterator<KItemListWidget*, KItemListGroupHeader*> it(m_visibleGroups);
while (it.hasNext()) {
it.next();
recycleGroupHeaderForWidget(it.key());
Q_ASSERT(m_visibleGroups.isEmpty());
}
+ if (useAlternateBackgrounds()) {
+ // Changing the group mode requires to update the alternate backgrounds
+ // as with the enabled group mode the altering is done on base of the first
+ // group item.
+ updateAlternateBackgrounds();
+ }
+ updateSiblingsInformation();
doLayout(NoAnimation);
}
{
Q_UNUSED(previous);
- KItemListWidget* previousWidget = m_visibleItems.value(previous, 0);
- if (previousWidget) {
- Q_ASSERT(previousWidget->isCurrent());
- previousWidget->setCurrent(false);
- }
+ // In SingleSelection mode (e.g., in the Places Panel), the current item is
+ // always the selected item. It is not necessary to highlight the current item then.
+ if (m_controller->selectionBehavior() != KItemListController::SingleSelection) {
+ KItemListWidget* previousWidget = m_visibleItems.value(previous, 0);
+ if (previousWidget) {
+ previousWidget->setCurrent(false);
+ }
- KItemListWidget* currentWidget = m_visibleItems.value(current, 0);
- if (currentWidget) {
- Q_ASSERT(!currentWidget->isCurrent());
- currentWidget->setCurrent(true);
+ KItemListWidget* currentWidget = m_visibleItems.value(current, 0);
+ if (currentWidget) {
+ currentWidget->setCurrent(true);
+ }
}
+
+ QAccessibleEvent ev(this, QAccessible::Focus);
+ ev.setChild(current);
+ QAccessible::updateAccessibility(&ev);
}
-void KItemListView::slotSelectionChanged(const QSet<int>& current, const QSet<int>& previous)
+void KItemListView::slotSelectionChanged(const KItemSet& current, const KItemSet& previous)
{
Q_UNUSED(previous);
// by m_visibleWidgets and must be deleted manually after the animation has
// been finished.
recycleGroupHeaderForWidget(itemListWidget);
- m_widgetCreator->recycle(itemListWidget);
+ widgetCreator()->recycle(itemListWidget);
break;
}
void KItemListView::slotRubberBandActivationChanged(bool active)
{
if (active) {
- connect(m_rubberBand, SIGNAL(startPositionChanged(QPointF,QPointF)), this, SLOT(slotRubberBandPosChanged()));
- connect(m_rubberBand, SIGNAL(endPositionChanged(QPointF,QPointF)), this, SLOT(slotRubberBandPosChanged()));
+ connect(m_rubberBand, &KItemListRubberBand::startPositionChanged, this, &KItemListView::slotRubberBandPosChanged);
+ connect(m_rubberBand, &KItemListRubberBand::endPositionChanged, this, &KItemListView::slotRubberBandPosChanged);
m_skipAutoScrollForRubberBand = true;
} else {
- disconnect(m_rubberBand, SIGNAL(startPositionChanged(QPointF,QPointF)), this, SLOT(slotRubberBandPosChanged()));
- disconnect(m_rubberBand, SIGNAL(endPositionChanged(QPointF,QPointF)), this, SLOT(slotRubberBandPosChanged()));
+ disconnect(m_rubberBand, &KItemListRubberBand::startPositionChanged, this, &KItemListView::slotRubberBandPosChanged);
+ disconnect(m_rubberBand, &KItemListRubberBand::endPositionChanged, this, &KItemListView::slotRubberBandPosChanged);
m_skipAutoScrollForRubberBand = false;
}
update();
}
-void KItemListView::slotVisibleRoleWidthChanged(const QByteArray& role,
- qreal currentWidth,
- qreal previousWidth)
+void KItemListView::slotHeaderColumnWidthChanged(const QByteArray& role,
+ qreal currentWidth,
+ qreal previousWidth)
{
+ Q_UNUSED(role);
+ Q_UNUSED(currentWidth);
Q_UNUSED(previousWidth);
- m_useHeaderWidths = true;
+ m_headerWidget->setAutomaticColumnResizing(false);
+ applyColumnWidthsFromHeader();
+ doLayout(NoAnimation);
+}
- if (m_visibleRolesSizes.contains(role)) {
- QSizeF roleSize = m_visibleRolesSizes.value(role);
- roleSize.setWidth(currentWidth);
- m_visibleRolesSizes.insert(role, roleSize);
- m_stretchedVisibleRolesSizes.insert(role, roleSize);
+void KItemListView::slotHeaderColumnMoved(const QByteArray& role,
+ int currentIndex,
+ int previousIndex)
+{
+ Q_ASSERT(m_visibleRoles[previousIndex] == role);
- // Apply the new size to the layouter
- QSizeF dynamicItemSize = m_itemSize;
- if (dynamicItemSize.width() < 0) {
- const qreal requiredWidth = visibleRolesSizesWidthSum();
- dynamicItemSize.setWidth(qMax(size().width(), requiredWidth));
- }
- if (dynamicItemSize.height() < 0) {
- const qreal requiredHeight = visibleRolesSizesHeightSum();
- dynamicItemSize.setHeight(qMax(size().height(), requiredHeight));
- }
+ const QList<QByteArray> previous = m_visibleRoles;
- m_layouter->setItemSize(dynamicItemSize);
+ QList<QByteArray> current = m_visibleRoles;
+ current.removeAt(previousIndex);
+ current.insert(currentIndex, role);
- // Update the role sizes for all visible widgets
- foreach (KItemListWidget* widget, visibleItemListWidgets()) {
- widget->setVisibleRolesSizes(m_stretchedVisibleRolesSizes);
- }
+ setVisibleRoles(current);
- doLayout(NoAnimation);
- }
+ emit visibleRolesChanged(current, previous);
}
void KItemListView::triggerAutoScrolling()
const qreal newScrollOffset = qMin(scrollOffset() + m_autoScrollIncrement, maxVisibleOffset);
setScrollOffset(newScrollOffset);
- // Trigger the autoscroll timer which will periodically call
- // triggerAutoScrolling()
- m_autoScrollTimer->start(RepeatingAutoScrollDelay);
+ // Trigger the autoscroll timer which will periodically call
+ // triggerAutoScrolling()
+ m_autoScrollTimer->start(RepeatingAutoScrollDelay);
+}
+
+void KItemListView::slotGeometryOfGroupHeaderParentChanged()
+{
+ KItemListWidget* widget = qobject_cast<KItemListWidget*>(sender());
+ Q_ASSERT(widget);
+ KItemListGroupHeader* groupHeader = m_visibleGroups.value(widget);
+ Q_ASSERT(groupHeader);
+ updateGroupHeaderLayout(widget);
+}
+
+void KItemListView::slotRoleEditingCanceled(int index, const QByteArray& role, const QVariant& value)
+{
+ disconnectRoleEditingSignals(index);
+
+ emit roleEditingCanceled(index, role, value);
+ m_editingRole = false;
+}
+
+void KItemListView::slotRoleEditingFinished(int index, const QByteArray& role, const QVariant& value)
+{
+ disconnectRoleEditingSignals(index);
+
+ emit roleEditingFinished(index, role, value);
+ m_editingRole = false;
}
void KItemListView::setController(KItemListController* controller)
KItemListController* previous = m_controller;
if (previous) {
KItemListSelectionManager* selectionManager = previous->selectionManager();
- disconnect(selectionManager, SIGNAL(currentChanged(int,int)), this, SLOT(slotCurrentChanged(int,int)));
- disconnect(selectionManager, SIGNAL(selectionChanged(QSet<int>,QSet<int>)), this, SLOT(slotSelectionChanged(QSet<int>,QSet<int>)));
+ disconnect(selectionManager, &KItemListSelectionManager::currentChanged, this, &KItemListView::slotCurrentChanged);
+ disconnect(selectionManager, &KItemListSelectionManager::selectionChanged, this, &KItemListView::slotSelectionChanged);
}
m_controller = controller;
if (controller) {
KItemListSelectionManager* selectionManager = controller->selectionManager();
- connect(selectionManager, SIGNAL(currentChanged(int,int)), this, SLOT(slotCurrentChanged(int,int)));
- connect(selectionManager, SIGNAL(selectionChanged(QSet<int>,QSet<int>)), this, SLOT(slotSelectionChanged(QSet<int>,QSet<int>)));
+ connect(selectionManager, &KItemListSelectionManager::currentChanged, this, &KItemListView::slotCurrentChanged);
+ connect(selectionManager, &KItemListSelectionManager::selectionChanged, this, &KItemListView::slotSelectionChanged);
}
onControllerChanged(controller, previous);
KItemModelBase* previous = m_model;
if (m_model) {
- disconnect(m_model, SIGNAL(itemsChanged(KItemRangeList,QSet<QByteArray>)),
- this, SLOT(slotItemsChanged(KItemRangeList,QSet<QByteArray>)));
- disconnect(m_model, SIGNAL(itemsInserted(KItemRangeList)),
- this, SLOT(slotItemsInserted(KItemRangeList)));
- disconnect(m_model, SIGNAL(itemsRemoved(KItemRangeList)),
- this, SLOT(slotItemsRemoved(KItemRangeList)));
- disconnect(m_model, SIGNAL(itemsMoved(KItemRange,QList<int>)),
- this, SLOT(slotItemsMoved(KItemRange,QList<int>)));
- disconnect(m_model, SIGNAL(groupedSortingChanged(bool)),
- this, SLOT(slotGroupedSortingChanged(bool)));
- disconnect(m_model, SIGNAL(sortOrderChanged(Qt::SortOrder,Qt::SortOrder)),
- this, SLOT(slotSortOrderChanged(Qt::SortOrder,Qt::SortOrder)));
- disconnect(m_model, SIGNAL(sortRoleChanged(QByteArray,QByteArray)),
- this, SLOT(slotSortRoleChanged(QByteArray,QByteArray)));
+ disconnect(m_model, &KItemModelBase::itemsChanged,
+ this, &KItemListView::slotItemsChanged);
+ disconnect(m_model, &KItemModelBase::itemsInserted,
+ this, &KItemListView::slotItemsInserted);
+ disconnect(m_model, &KItemModelBase::itemsRemoved,
+ this, &KItemListView::slotItemsRemoved);
+ disconnect(m_model, &KItemModelBase::itemsMoved,
+ this, &KItemListView::slotItemsMoved);
+ disconnect(m_model, &KItemModelBase::groupsChanged,
+ this, &KItemListView::slotGroupsChanged);
+ disconnect(m_model, &KItemModelBase::groupedSortingChanged,
+ this, &KItemListView::slotGroupedSortingChanged);
+ disconnect(m_model, &KItemModelBase::sortOrderChanged,
+ this, &KItemListView::slotSortOrderChanged);
+ disconnect(m_model, &KItemModelBase::sortRoleChanged,
+ this, &KItemListView::slotSortRoleChanged);
+
+ m_sizeHintResolver->itemsRemoved(KItemRangeList() << KItemRange(0, m_model->count()));
}
m_model = model;
- m_layouter->setModel(model);
+ m_layouter->setModel(model);
m_grouped = model->groupedSorting();
if (m_model) {
- connect(m_model, SIGNAL(itemsChanged(KItemRangeList,QSet<QByteArray>)),
- this, SLOT(slotItemsChanged(KItemRangeList,QSet<QByteArray>)));
- connect(m_model, SIGNAL(itemsInserted(KItemRangeList)),
- this, SLOT(slotItemsInserted(KItemRangeList)));
- connect(m_model, SIGNAL(itemsRemoved(KItemRangeList)),
- this, SLOT(slotItemsRemoved(KItemRangeList)));
- connect(m_model, SIGNAL(itemsMoved(KItemRange,QList<int>)),
- this, SLOT(slotItemsMoved(KItemRange,QList<int>)));
- connect(m_model, SIGNAL(groupedSortingChanged(bool)),
- this, SLOT(slotGroupedSortingChanged(bool)));
- connect(m_model, SIGNAL(sortOrderChanged(Qt::SortOrder,Qt::SortOrder)),
- this, SLOT(slotSortOrderChanged(Qt::SortOrder,Qt::SortOrder)));
- connect(m_model, SIGNAL(sortRoleChanged(QByteArray,QByteArray)),
- this, SLOT(slotSortRoleChanged(QByteArray,QByteArray)));
+ connect(m_model, &KItemModelBase::itemsChanged,
+ this, &KItemListView::slotItemsChanged);
+ connect(m_model, &KItemModelBase::itemsInserted,
+ this, &KItemListView::slotItemsInserted);
+ connect(m_model, &KItemModelBase::itemsRemoved,
+ this, &KItemListView::slotItemsRemoved);
+ connect(m_model, &KItemModelBase::itemsMoved,
+ this, &KItemListView::slotItemsMoved);
+ connect(m_model, &KItemModelBase::groupsChanged,
+ this, &KItemListView::slotGroupsChanged);
+ connect(m_model, &KItemModelBase::groupedSortingChanged,
+ this, &KItemListView::slotGroupedSortingChanged);
+ connect(m_model, &KItemModelBase::sortOrderChanged,
+ this, &KItemListView::slotSortOrderChanged);
+ connect(m_model, &KItemModelBase::sortRoleChanged,
+ this, &KItemListView::slotSortRoleChanged);
+
+ const int itemCount = m_model->count();
+ if (itemCount > 0) {
+ slotItemsInserted(KItemRangeList() << KItemRange(0, itemCount));
+ }
}
onModelChanged(model, previous);
m_layoutTimer->stop();
}
- if (!m_model || m_model->count() < 0 || m_activeTransactions > 0) {
+ if (m_activeTransactions > 0) {
+ if (hint == NoAnimation) {
+ // As soon as at least one property change should be done without animation,
+ // the whole transaction will be marked as not animated.
+ m_endTransactionAnimationHint = NoAnimation;
+ }
+ return;
+ }
+
+ if (!m_model || m_model->count() < 0) {
return;
}
const int lastVisibleIndex = m_layouter->lastVisibleIndex();
+ int firstSibblingIndex = -1;
+ int lastSibblingIndex = -1;
+ const bool supportsExpanding = supportsItemExpanding();
+
QList<int> reusableItems = recycleInvisibleItems(firstVisibleIndex, lastVisibleIndex, hint);
// Assure that for each visible item a KItemListWidget is available. KItemListWidget
const int oldIndex = reusableItems.takeLast();
widget = m_visibleItems.value(oldIndex);
setWidgetIndex(widget, i);
-
- if (m_grouped) {
- updateGroupHeaderForWidget(widget);
- }
+ updateWidgetProperties(widget, i);
+ initializeItemListWidget(widget);
} else {
// No reusable KItemListWidget instance is available, create a new one
widget = createWidget(i);
widget->resize(itemBounds.size());
if (animate && changedCount < 0) {
- // Items have been deleted, move the created item to the
- // imaginary old position. They will get animated to the new position
- // later.
- const QRectF itemRect = m_layouter->itemRect(i - changedCount);
- if (itemRect.isEmpty()) {
- const QPointF invisibleOldPos = (scrollOrientation() == Qt::Vertical)
- ? QPointF(0, size().height()) : QPointF(size().width(), 0);
- widget->setPos(invisibleOldPos);
- } else {
- widget->setPos(itemRect.topLeft());
+ // Items have been deleted.
+ if (i >= changedIndex) {
+ // The item is located behind the removed range. Move the
+ // created item to the imaginary old position outside the
+ // view. It will get animated to the new position later.
+ const int previousIndex = i - changedCount;
+ const QRectF itemRect = m_layouter->itemRect(previousIndex);
+ if (itemRect.isEmpty()) {
+ const QPointF invisibleOldPos = (scrollOrientation() == Qt::Vertical)
+ ? QPointF(0, size().height()) : QPointF(size().width(), 0);
+ widget->setPos(invisibleOldPos);
+ } else {
+ widget->setPos(itemRect.topLeft());
+ }
+ applyNewPos = false;
}
- applyNewPos = false;
+ }
+
+ if (supportsExpanding && changedCount == 0) {
+ if (firstSibblingIndex < 0) {
+ firstSibblingIndex = i;
+ }
+ lastSibblingIndex = i;
}
}
if (animate) {
+ if (m_animation->isStarted(widget, KItemListViewAnimation::MovingAnimation)) {
+ m_animation->start(widget, KItemListViewAnimation::MovingAnimation, newPos);
+ applyNewPos = false;
+ }
+
const bool itemsRemoved = (changedCount < 0);
const bool itemsInserted = (changedCount > 0);
- if (itemsRemoved && (i >= changedIndex + changedCount + 1)) {
+ if (itemsRemoved && (i >= changedIndex)) {
// The item is located after the removed items. Animate the moving of the position.
- applyNewPos = !moveWidget(widget, itemBounds);
+ applyNewPos = !moveWidget(widget, newPos);
} else if (itemsInserted && i >= changedIndex) {
// The item is located after the first inserted item
if (i <= changedIndex + changedCount - 1) {
// The item was already there before, so animate the moving of the position.
// No moving animation is done if the item is animated by a create animation: This
// prevents a "move animation mess" when inserting several ranges in parallel.
- applyNewPos = !moveWidget(widget, itemBounds);
+ applyNewPos = !moveWidget(widget, newPos);
}
} else if (!itemsRemoved && !itemsInserted && !wasHidden) {
// The size of the view might have been changed. Animate the moving of the position.
- applyNewPos = !moveWidget(widget, itemBounds);
+ applyNewPos = !moveWidget(widget, newPos);
}
} else {
m_animation->stop(widget);
widget->resize(itemBounds.size());
}
}
+
+ // Updating the cell-information must be done as last step: The decision whether the
+ // moving-animation should be started at all is based on the previous cell-information.
+ const Cell cell(m_layouter->itemColumn(i), m_layouter->itemRow(i));
+ m_visibleCells.insert(i, cell);
}
// Delete invisible KItemListWidget instances that have not been reused
recycleWidget(m_visibleItems.value(index));
}
+ if (supportsExpanding && firstSibblingIndex >= 0) {
+ Q_ASSERT(lastSibblingIndex >= 0);
+ updateSiblingsInformation(firstSibblingIndex, lastSibblingIndex);
+ }
+
if (m_grouped) {
// Update the layout of all visible group headers
QHashIterator<KItemListWidget*, KItemListGroupHeader*> it(m_visibleGroups);
} else {
widget->setVisible(false);
items.append(index);
-
+
if (m_grouped) {
recycleGroupHeaderForWidget(widget);
}
return items;
}
-bool KItemListView::moveWidget(KItemListWidget* widget,const QRectF& itemBounds)
+bool KItemListView::moveWidget(KItemListWidget* widget,const QPointF& newPos)
{
- const QPointF oldPos = widget->pos();
- const QPointF newPos = itemBounds.topLeft();
- if (oldPos == newPos) {
+ if (widget->pos() == newPos) {
return false;
}
-
- bool startMovingAnim = m_itemSize.isEmpty() || widget->size() != itemBounds.size();
- if (!startMovingAnim) {
+
+ bool startMovingAnim = false;
+
+ if (m_itemSize.isEmpty()) {
+ // The items are not aligned in a grid but either as columns or rows.
+ startMovingAnim = true;
+ } else {
// When having a grid the moving-animation should only be started, if it is done within
// one row in the vertical scroll-orientation or one column in the horizontal scroll-orientation.
// Otherwise instead of a moving-animation a create-animation on the new position will be used
// instead. This is done to prevent overlapping (and confusing) moving-animations.
- const qreal xMax = m_itemSize.width();
- const qreal yMax = m_itemSize.height();
- qreal xDiff = qAbs(oldPos.x() - newPos.x());
- qreal yDiff = qAbs(oldPos.y() - newPos.y());
- if (scrollOrientation() == Qt::Vertical) {
- startMovingAnim = (xDiff > yDiff && yDiff < yMax);
- } else {
- startMovingAnim = (yDiff > xDiff && xDiff < xMax);
+ const int index = widget->index();
+ const Cell cell = m_visibleCells.value(index);
+ if (cell.column >= 0 && cell.row >= 0) {
+ if (scrollOrientation() == Qt::Vertical) {
+ startMovingAnim = (cell.row == m_layouter->itemRow(index));
+ } else {
+ startMovingAnim = (cell.column == m_layouter->itemColumn(index));
+ }
}
}
KItemListWidget* KItemListView::createWidget(int index)
{
- KItemListWidget* widget = m_widgetCreator->create(this);
+ KItemListWidget* widget = widgetCreator()->create(this);
widget->setFlag(QGraphicsItem::ItemStacksBehindParent);
- updateWidgetProperties(widget, index);
m_visibleItems.insert(index, widget);
-
- if (m_grouped) {
- updateGroupHeaderForWidget(widget);
- }
-
+ m_visibleCells.insert(index, Cell());
+ updateWidgetProperties(widget, index);
initializeItemListWidget(widget);
return widget;
}
recycleGroupHeaderForWidget(widget);
}
- m_visibleItems.remove(widget->index());
- m_widgetCreator->recycle(widget);
+ const int index = widget->index();
+ m_visibleItems.remove(index);
+ m_visibleCells.remove(index);
+
+ widgetCreator()->recycle(widget);
}
void KItemListView::setWidgetIndex(KItemListWidget* widget, int index)
{
const int oldIndex = widget->index();
m_visibleItems.remove(oldIndex);
- updateWidgetProperties(widget, index);
+ m_visibleCells.remove(oldIndex);
+
m_visibleItems.insert(index, widget);
+ m_visibleCells.insert(index, Cell());
- initializeItemListWidget(widget);
+ widget->setIndex(index);
+}
+
+void KItemListView::moveWidgetToIndex(KItemListWidget* widget, int index)
+{
+ const int oldIndex = widget->index();
+ const Cell oldCell = m_visibleCells.value(oldIndex);
+
+ setWidgetIndex(widget, index);
+
+ const Cell newCell(m_layouter->itemColumn(index), m_layouter->itemRow(index));
+ const bool vertical = (scrollOrientation() == Qt::Vertical);
+ const bool updateCell = (vertical && oldCell.row == newCell.row) ||
+ (!vertical && oldCell.column == newCell.column);
+ if (updateCell) {
+ m_visibleCells.insert(index, newCell);
+ }
}
void KItemListView::setLayouterSize(const QSizeF& size, SizeType sizeType)
void KItemListView::updateWidgetProperties(KItemListWidget* widget, int index)
{
widget->setVisibleRoles(m_visibleRoles);
- widget->setVisibleRolesSizes(m_stretchedVisibleRolesSizes);
+ updateWidgetColumnWidths(widget);
widget->setStyleOption(m_styleOption);
const KItemListSelectionManager* selectionManager = m_controller->selectionManager();
- widget->setCurrent(index == selectionManager->currentItem());
+
+ // In SingleSelection mode (e.g., in the Places Panel), the current item is
+ // always the selected item. It is not necessary to highlight the current item then.
+ if (m_controller->selectionBehavior() != KItemListController::SingleSelection) {
+ widget->setCurrent(index == selectionManager->currentItem());
+ }
widget->setSelected(selectionManager->isSelected(index));
widget->setHovered(false);
- widget->setAlternatingBackgroundColors(false);
widget->setEnabledSelectionToggle(enabledSelectionToggles());
widget->setIndex(index);
widget->setData(m_model->data(index));
+ widget->setSiblingsInformation(QBitArray());
+ updateAlternateBackgroundForWidget(widget);
+
+ if (m_grouped) {
+ updateGroupHeaderForWidget(widget);
+ }
}
void KItemListView::updateGroupHeaderForWidget(KItemListWidget* widget)
}
const QList<QPair<int, QVariant> > groups = model()->groups();
- if (groups.isEmpty()) {
+ if (groups.isEmpty() || !groupHeaderCreator()) {
return;
}
- KItemListGroupHeader* header = m_visibleGroups.value(widget);
- if (!header) {
- header = m_groupHeaderCreator->create(this);
- header->setParentItem(widget);
- m_visibleGroups.insert(widget, header);
+ KItemListGroupHeader* groupHeader = m_visibleGroups.value(widget);
+ if (!groupHeader) {
+ groupHeader = groupHeaderCreator()->create(this);
+ groupHeader->setParentItem(widget);
+ m_visibleGroups.insert(widget, groupHeader);
+ connect(widget, &KItemListWidget::geometryChanged, this, &KItemListView::slotGeometryOfGroupHeaderParentChanged);
}
- Q_ASSERT(header->parentItem() == widget);
-
- // Determine the shown data for the header by doing a binary
- // search in the groups-list
- int min = 0;
- int max = groups.count() - 1;
- int mid = 0;
- do {
- mid = (min + max) / 2;
- if (index > groups.at(mid).first) {
- min = mid + 1;
- } else {
- max = mid - 1;
- }
- } while (groups.at(mid).first != index && min <= max);
+ Q_ASSERT(groupHeader->parentItem() == widget);
- header->setData(groups.at(mid).second);
- header->setRole(model()->sortRole());
- header->setStyleOption(m_styleOption);
- header->setScrollOrientation(scrollOrientation());
+ const int groupIndex = groupIndexForItem(index);
+ Q_ASSERT(groupIndex >= 0);
+ groupHeader->setData(groups.at(groupIndex).second);
+ groupHeader->setRole(model()->sortRole());
+ groupHeader->setStyleOption(m_styleOption);
+ groupHeader->setScrollOrientation(scrollOrientation());
+ groupHeader->setItemIndex(index);
- header->show();
+ groupHeader->show();
}
void KItemListView::updateGroupHeaderLayout(KItemListWidget* widget)
{
- KItemListGroupHeader* header = m_visibleGroups.value(widget);
- Q_ASSERT(header);
+ KItemListGroupHeader* groupHeader = m_visibleGroups.value(widget);
+ Q_ASSERT(groupHeader);
const int index = widget->index();
const QRectF groupHeaderRect = m_layouter->groupHeaderRect(index);
// The group-header is a child of the itemlist widget. Translate the
// group header position to the relative position.
- const QPointF groupHeaderPos(groupHeaderRect.x() - itemRect.x(),
- - groupHeaderRect.height());
- header->setPos(groupHeaderPos);
- header->resize(groupHeaderRect.size());
+ if (scrollOrientation() == Qt::Vertical) {
+ // In the vertical scroll orientation the group header should always span
+ // the whole width no matter which temporary position the parent widget
+ // has. In this case the x-position and width will be adjusted manually.
+ const qreal x = -widget->x() - itemOffset();
+ const qreal width = maximumItemOffset();
+ groupHeader->setPos(x, -groupHeaderRect.height());
+ groupHeader->resize(width, groupHeaderRect.size().height());
+ } else {
+ groupHeader->setPos(groupHeaderRect.x() - itemRect.x(), -widget->y());
+ groupHeader->resize(groupHeaderRect.size());
+ }
}
void KItemListView::recycleGroupHeaderForWidget(KItemListWidget* widget)
KItemListGroupHeader* header = m_visibleGroups.value(widget);
if (header) {
header->setParentItem(0);
- m_groupHeaderCreator->recycle(header);
+ groupHeaderCreator()->recycle(header);
m_visibleGroups.remove(widget);
+ disconnect(widget, &KItemListWidget::geometryChanged, this, &KItemListView::slotGeometryOfGroupHeaderParentChanged);
}
}
}
}
-QHash<QByteArray, qreal> KItemListView::headerRolesWidths() const
+int KItemListView::groupIndexForItem(int index) const
{
- QHash<QByteArray, qreal> rolesWidths;
+ Q_ASSERT(m_grouped);
+
+ const QList<QPair<int, QVariant> > groups = model()->groups();
+ if (groups.isEmpty()) {
+ return -1;
+ }
+
+ int min = 0;
+ int max = groups.count() - 1;
+ int mid = 0;
+ do {
+ mid = (min + max) / 2;
+ if (index > groups[mid].first) {
+ min = mid + 1;
+ } else {
+ max = mid - 1;
+ }
+ } while (groups[mid].first != index && min <= max);
+
+ if (min > max) {
+ while (groups[mid].first > index && mid > 0) {
+ --mid;
+ }
+ }
+
+ return mid;
+}
- QHashIterator<QByteArray, QSizeF> it(m_stretchedVisibleRolesSizes);
+void KItemListView::updateAlternateBackgrounds()
+{
+ QHashIterator<int, KItemListWidget*> it(m_visibleItems);
while (it.hasNext()) {
it.next();
- rolesWidths.insert(it.key(), it.value().width());
+ updateAlternateBackgroundForWidget(it.value());
+ }
+}
+
+void KItemListView::updateAlternateBackgroundForWidget(KItemListWidget* widget)
+{
+ bool enabled = useAlternateBackgrounds();
+ if (enabled) {
+ const int index = widget->index();
+ enabled = (index & 0x1) > 0;
+ if (m_grouped) {
+ const int groupIndex = groupIndexForItem(index);
+ if (groupIndex >= 0) {
+ const QList<QPair<int, QVariant> > groups = model()->groups();
+ const int indexOfFirstGroupItem = groups[groupIndex].first;
+ const int relativeIndex = index - indexOfFirstGroupItem;
+ enabled = (relativeIndex & 0x1) > 0;
+ }
+ }
}
+ widget->setAlternateBackground(enabled);
+}
- return rolesWidths;
+bool KItemListView::useAlternateBackgrounds() const
+{
+ return m_itemSize.isEmpty() && m_visibleRoles.count() > 1;
}
-void KItemListView::updateVisibleRolesSizes(const KItemRangeList& itemRanges)
+QHash<QByteArray, qreal> KItemListView::preferredColumnWidths(const KItemRangeList& itemRanges) const
{
- if (!m_itemSize.isEmpty() || m_useHeaderWidths) {
- return;
+ QElapsedTimer timer;
+ timer.start();
+
+ QHash<QByteArray, qreal> widths;
+
+ // Calculate the minimum width for each column that is required
+ // to show the headline unclipped.
+ const QFontMetricsF fontMetrics(m_headerWidget->font());
+ const int gripMargin = m_headerWidget->style()->pixelMetric(QStyle::PM_HeaderGripMargin);
+ const int headerMargin = m_headerWidget->style()->pixelMetric(QStyle::PM_HeaderMargin);
+ foreach (const QByteArray& visibleRole, visibleRoles()) {
+ const QString headerText = m_model->roleDescription(visibleRole);
+ const qreal headerWidth = fontMetrics.width(headerText) + gripMargin + headerMargin * 2;
+ widths.insert(visibleRole, headerWidth);
+ }
+
+ // Calculate the preferred column withs for each item and ignore values
+ // smaller than the width for showing the headline unclipped.
+ const KItemListWidgetCreatorBase* creator = widgetCreator();
+ 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()) {
+ qreal maxWidth = widths.value(visibleRole, 0);
+ const qreal width = creator->preferredRoleColumnWidth(visibleRole, i, this);
+ maxWidth = qMax(width, maxWidth);
+ widths.insert(visibleRole, maxWidth);
+ }
+
+ 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.
+ maxTimeExceeded = true;
+ break;
+ }
+ ++calculatedItemCount;
+ }
+ if (maxTimeExceeded) {
+ break;
+ }
+ }
+
+ return widths;
+}
+
+void KItemListView::applyColumnWidthsFromHeader()
+{
+ // Apply the new size to the layouter
+ const qreal requiredWidth = columnWidthsSum();
+ const QSizeF dynamicItemSize(qMax(size().width(), requiredWidth),
+ m_itemSize.height());
+ m_layouter->setItemSize(dynamicItemSize);
+
+ // Update the role sizes for all visible widgets
+ QHashIterator<int, KItemListWidget*> it(m_visibleItems);
+ while (it.hasNext()) {
+ it.next();
+ updateWidgetColumnWidths(it.value());
+ }
+}
+
+void KItemListView::updateWidgetColumnWidths(KItemListWidget* widget)
+{
+ foreach (const QByteArray& role, m_visibleRoles) {
+ widget->setColumnWidth(role, m_headerWidget->columnWidth(role));
}
+}
+void KItemListView::updatePreferredColumnWidths(const KItemRangeList& itemRanges)
+{
+ Q_ASSERT(m_itemSize.isEmpty());
const int itemCount = m_model->count();
int rangesItemCount = 0;
foreach (const KItemRange& range, itemRanges) {
}
if (itemCount == rangesItemCount) {
- m_visibleRolesSizes = visibleRolesSizes(itemRanges);
- if (m_header) {
- // Assure the the sizes are not smaller than the minimum defined by the header
- // TODO: Currently only implemented for a top-aligned header
- const qreal minHeaderRoleWidth = m_header->minimumRoleWidth();
- QMutableHashIterator<QByteArray, QSizeF> it (m_visibleRolesSizes);
- while (it.hasNext()) {
- it.next();
- const QSizeF& size = it.value();
- if (size.width() < minHeaderRoleWidth) {
- const QSizeF newSize(minHeaderRoleWidth, size.height());
- m_visibleRolesSizes.insert(it.key(), newSize);
- }
- }
+ const QHash<QByteArray, qreal> preferredWidths = preferredColumnWidths(itemRanges);
+ foreach (const QByteArray& role, m_visibleRoles) {
+ m_headerWidget->setPreferredColumnWidth(role, preferredWidths.value(role));
}
} else {
// Only a sub range of the roles need to be determined.
- // The chances are good that the sizes of the sub ranges
- // already fit into the available sizes and hence no
+ // The chances are good that the widths of the sub ranges
+ // already fit into the available widths and hence no
// expensive update might be required.
- bool updateRequired = false;
+ bool changed = false;
- const QHash<QByteArray, QSizeF> updatedSizes = visibleRolesSizes(itemRanges);
- QHashIterator<QByteArray, QSizeF> it(updatedSizes);
+ const QHash<QByteArray, qreal> updatedWidths = preferredColumnWidths(itemRanges);
+ QHashIterator<QByteArray, qreal> it(updatedWidths);
while (it.hasNext()) {
it.next();
const QByteArray& role = it.key();
- const QSizeF& updatedSize = it.value();
- const QSizeF currentSize = m_visibleRolesSizes.value(role);
- if (updatedSize.width() > currentSize.width() || updatedSize.height() > currentSize.height()) {
- m_visibleRolesSizes.insert(role, updatedSize);
- updateRequired = true;
+ const qreal updatedWidth = it.value();
+ const qreal currentWidth = m_headerWidget->preferredColumnWidth(role);
+ if (updatedWidth > currentWidth) {
+ m_headerWidget->setPreferredColumnWidth(role, updatedWidth);
+ changed = true;
}
}
- if (!updateRequired) {
+ if (!changed) {
// All the updated sizes are smaller than the current sizes and no change
// of the stretched roles-widths is required
return;
}
}
- updateStretchedVisibleRolesSizes();
+ if (m_headerWidget->automaticColumnResizing()) {
+ applyAutomaticColumnWidths();
+ }
}
-void KItemListView::updateVisibleRolesSizes()
+void KItemListView::updatePreferredColumnWidths()
{
- if (!m_model) {
- return;
- }
-
- const int itemCount = m_model->count();
- if (itemCount > 0) {
- updateVisibleRolesSizes(KItemRangeList() << KItemRange(0, itemCount));
+ if (m_model) {
+ updatePreferredColumnWidths(KItemRangeList() << KItemRange(0, m_model->count()));
}
}
-void KItemListView::updateStretchedVisibleRolesSizes()
+void KItemListView::applyAutomaticColumnWidths()
{
- if (!m_itemSize.isEmpty() || m_useHeaderWidths || m_visibleRoles.isEmpty()) {
+ Q_ASSERT(m_itemSize.isEmpty());
+ Q_ASSERT(m_headerWidget->automaticColumnResizing());
+ if (m_visibleRoles.isEmpty()) {
return;
}
// Calculate the maximum size of an item by considering the
// visible role sizes and apply them to the layouter. If the
- // size does not use the available view-size it the size of the
+ // size does not use the available view-size the size of the
// first role will get stretched.
- m_stretchedVisibleRolesSizes = m_visibleRolesSizes;
- const QByteArray role = m_visibleRoles.first();
- QSizeF firstRoleSize = m_stretchedVisibleRolesSizes.value(role);
+ foreach (const QByteArray& role, m_visibleRoles) {
+ const qreal preferredWidth = m_headerWidget->preferredColumnWidth(role);
+ m_headerWidget->setColumnWidth(role, preferredWidth);
+ }
+
+ const QByteArray firstRole = m_visibleRoles.first();
+ qreal firstColumnWidth = m_headerWidget->columnWidth(firstRole);
QSizeF dynamicItemSize = m_itemSize;
- if (dynamicItemSize.width() <= 0) {
- const qreal requiredWidth = visibleRolesSizesWidthSum();
- const qreal availableWidth = size().width();
- if (requiredWidth < availableWidth) {
- // Stretch the first role to use the whole width for the item
- firstRoleSize.rwidth() += availableWidth - requiredWidth;
- m_stretchedVisibleRolesSizes.insert(role, firstRoleSize);
+ qreal requiredWidth = columnWidthsSum();
+ const qreal availableWidth = size().width();
+ if (requiredWidth < availableWidth) {
+ // Stretch the first column to use the whole remaining width
+ firstColumnWidth += availableWidth - requiredWidth;
+ m_headerWidget->setColumnWidth(firstRole, firstColumnWidth);
+ } else if (requiredWidth > availableWidth && m_visibleRoles.count() > 1) {
+ // Shrink the first column to be able to show as much other
+ // columns as possible
+ qreal shrinkedFirstColumnWidth = firstColumnWidth - requiredWidth + availableWidth;
+
+ // TODO: A proper calculation of the minimum width depends on the implementation
+ // of KItemListWidget. Probably a kind of minimum size-hint should be introduced
+ // later.
+ const qreal minWidth = qMin(firstColumnWidth, qreal(m_styleOption.iconSize * 2 + 200));
+ if (shrinkedFirstColumnWidth < minWidth) {
+ shrinkedFirstColumnWidth = minWidth;
}
- dynamicItemSize.setWidth(qMax(requiredWidth, availableWidth));
- }
- if (dynamicItemSize.height() <= 0) {
- const qreal requiredHeight = visibleRolesSizesHeightSum();
- const qreal availableHeight = size().height();
- if (requiredHeight < availableHeight) {
- // Stretch the first role to use the whole height for the item
- firstRoleSize.rheight() += availableHeight - requiredHeight;
- m_stretchedVisibleRolesSizes.insert(role, firstRoleSize);
- }
- dynamicItemSize.setHeight(qMax(requiredHeight, availableHeight));
+ m_headerWidget->setColumnWidth(firstRole, shrinkedFirstColumnWidth);
+ requiredWidth -= firstColumnWidth - shrinkedFirstColumnWidth;
}
- m_layouter->setItemSize(dynamicItemSize);
+ dynamicItemSize.rwidth() = qMax(requiredWidth, availableWidth);
- if (m_header) {
- m_header->setVisibleRolesWidths(headerRolesWidths());
- m_header->resize(dynamicItemSize.width(), m_header->size().height());
- }
+ m_layouter->setItemSize(dynamicItemSize);
// Update the role sizes for all visible widgets
- foreach (KItemListWidget* widget, visibleItemListWidgets()) {
- widget->setVisibleRolesSizes(m_stretchedVisibleRolesSizes);
- }
-}
-
-qreal KItemListView::visibleRolesSizesWidthSum() const
-{
- qreal widthSum = 0;
- QHashIterator<QByteArray, QSizeF> it(m_visibleRolesSizes);
+ QHashIterator<int, KItemListWidget*> it(m_visibleItems);
while (it.hasNext()) {
it.next();
- widthSum += it.value().width();
+ updateWidgetColumnWidths(it.value());
}
- return widthSum;
}
-qreal KItemListView::visibleRolesSizesHeightSum() const
+qreal KItemListView::columnWidthsSum() const
{
- qreal heightSum = 0;
- QHashIterator<QByteArray, QSizeF> it(m_visibleRolesSizes);
- while (it.hasNext()) {
- it.next();
- heightSum += it.value().height();
+ qreal widthsSum = 0;
+ foreach (const QByteArray& role, m_visibleRoles) {
+ widthsSum += m_headerWidget->columnWidth(role);
}
- return heightSum;
+ return widthsSum;
}
QRectF KItemListView::headerBoundaries() const
{
- return m_header ? m_header->geometry() : QRectF();
+ return m_headerWidget->isVisible() ? m_headerWidget->geometry() : QRectF();
}
-bool KItemListView::changesItemGridLayout(const QSizeF& newGridSize, const QSizeF& newItemSize) const
+bool KItemListView::changesItemGridLayout(const QSizeF& newGridSize,
+ const QSizeF& newItemSize,
+ const QSizeF& newItemMargin) const
{
if (newItemSize.isEmpty() || newGridSize.isEmpty()) {
return false;
}
-
+
if (m_layouter->scrollOrientation() == Qt::Vertical) {
const qreal itemWidth = m_layouter->itemSize().width();
if (itemWidth > 0) {
- const int oldColumnCount = m_layouter->size().width() / itemWidth;
- const int newColumnCount = newGridSize.width() / newItemSize.width();
- return oldColumnCount != newColumnCount;
- }
+ const int newColumnCount = itemsPerSize(newGridSize.width(),
+ newItemSize.width(),
+ newItemMargin.width());
+ if (m_model->count() > newColumnCount) {
+ const int oldColumnCount = itemsPerSize(m_layouter->size().width(),
+ itemWidth,
+ m_layouter->itemMargin().width());
+ return oldColumnCount != newColumnCount;
+ }
+ }
} else {
const qreal itemHeight = m_layouter->itemSize().height();
if (itemHeight > 0) {
- const int oldRowCount = m_layouter->size().height() / itemHeight;
- const int newRowCount = newGridSize.height() / newItemSize.height();
- return oldRowCount != newRowCount;
- }
+ const int newRowCount = itemsPerSize(newGridSize.height(),
+ newItemSize.height(),
+ newItemMargin.height());
+ if (m_model->count() > newRowCount) {
+ const int oldRowCount = itemsPerSize(m_layouter->size().height(),
+ itemHeight,
+ m_layouter->itemMargin().height());
+ return oldRowCount != newRowCount;
+ }
+ }
}
-
+
return false;
}
bool KItemListView::animateChangedItemCount(int changedItemCount) const
{
+ if (m_itemSize.isEmpty()) {
+ // We have only columns or only rows, but no grid: An animation is usually
+ // welcome when inserting or removing items.
+ return !supportsItemExpanding();
+ }
+
if (m_layouter->size().isEmpty() || m_layouter->itemSize().isEmpty()) {
return false;
}
-
+
const int maximum = (scrollOrientation() == Qt::Vertical)
? m_layouter->size().width() / m_layouter->itemSize().width()
: m_layouter->size().height() / m_layouter->itemSize().height();
return changedItemCount <= maximum * 2 / 3;
}
+
+bool KItemListView::scrollBarRequired(const QSizeF& size) const
+{
+ const QSizeF oldSize = m_layouter->size();
+
+ m_layouter->setSize(size);
+ const qreal maxOffset = m_layouter->maximumScrollOffset();
+ m_layouter->setSize(oldSize);
+
+ return m_layouter->scrollOrientation() == Qt::Vertical ? maxOffset > size.height()
+ : maxOffset > size.width();
+}
+
+int KItemListView::showDropIndicator(const QPointF& pos)
+{
+ QHashIterator<int, KItemListWidget*> it(m_visibleItems);
+ while (it.hasNext()) {
+ it.next();
+ const KItemListWidget* widget = it.value();
+
+ const QPointF mappedPos = widget->mapFromItem(this, pos);
+ const QRectF rect = itemRect(widget->index());
+ if (mappedPos.y() >= 0 && mappedPos.y() <= rect.height()) {
+ if (m_model->supportsDropping(widget->index())) {
+ // Keep 30% of the rectangle as the gap instead of always having a fixed gap
+ const int gap = qMax(qreal(4.0), qreal(0.3) * rect.height());
+ if (mappedPos.y() >= gap && mappedPos.y() <= rect.height() - gap) {
+ return -1;
+ }
+ }
+
+ const bool isAboveItem = (mappedPos.y () < rect.height() / 2);
+ const qreal y = isAboveItem ? rect.top() : rect.bottom();
+
+ const QRectF draggingInsertIndicator(rect.left(), y, rect.width(), 1);
+ if (m_dropIndicator != draggingInsertIndicator) {
+ m_dropIndicator = draggingInsertIndicator;
+ update();
+ }
+
+ int index = widget->index();
+ if (!isAboveItem) {
+ ++index;
+ }
+ return index;
+ }
+ }
+
+ const QRectF firstItemRect = itemRect(firstVisibleIndex());
+ return (pos.y() <= firstItemRect.top()) ? 0 : -1;
+}
+
+void KItemListView::hideDropIndicator()
+{
+ if (!m_dropIndicator.isNull()) {
+ m_dropIndicator = QRectF();
+ update();
+ }
+}
+
+void KItemListView::updateGroupHeaderHeight()
+{
+ qreal groupHeaderHeight = m_styleOption.fontMetrics.height();
+ qreal groupHeaderMargin = 0;
+
+ if (scrollOrientation() == Qt::Horizontal) {
+ // The vertical margin above and below the header should be
+ // equal to the horizontal margin, not the vertical margin
+ // from m_styleOption.
+ groupHeaderHeight += 2 * m_styleOption.horizontalMargin;
+ groupHeaderMargin = m_styleOption.horizontalMargin;
+ } else if (m_itemSize.isEmpty()){
+ groupHeaderHeight += 4 * m_styleOption.padding;
+ groupHeaderMargin = m_styleOption.iconSize / 2;
+ } else {
+ groupHeaderHeight += 2 * m_styleOption.padding + m_styleOption.verticalMargin;
+ groupHeaderMargin = m_styleOption.iconSize / 4;
+ }
+ m_layouter->setGroupHeaderHeight(groupHeaderHeight);
+ m_layouter->setGroupHeaderMargin(groupHeaderMargin);
+
+ updateVisibleGroupHeaders();
+}
+
+void KItemListView::updateSiblingsInformation(int firstIndex, int lastIndex)
+{
+ if (!supportsItemExpanding() || !m_model) {
+ return;
+ }
+
+ if (firstIndex < 0 || lastIndex < 0) {
+ firstIndex = m_layouter->firstVisibleIndex();
+ lastIndex = m_layouter->lastVisibleIndex();
+ } else {
+ const bool isRangeVisible = (firstIndex <= m_layouter->lastVisibleIndex() &&
+ lastIndex >= m_layouter->firstVisibleIndex());
+ if (!isRangeVisible) {
+ return;
+ }
+ }
+
+ int previousParents = 0;
+ QBitArray previousSiblings;
+
+ // The rootIndex describes the first index where the siblings get
+ // calculated from. For the calculation the upper most parent item
+ // is required. For performance reasons it is checked first whether
+ // the visible items before or after the current range already
+ // contain a siblings information which can be used as base.
+ int rootIndex = firstIndex;
+
+ KItemListWidget* widget = m_visibleItems.value(firstIndex - 1);
+ if (!widget) {
+ // There is no visible widget before the range, check whether there
+ // is one after the range:
+ widget = m_visibleItems.value(lastIndex + 1);
+ if (widget) {
+ // The sibling information of the widget may only be used if
+ // all items of the range have the same number of parents.
+ const int parents = m_model->expandedParentsCount(lastIndex + 1);
+ for (int i = lastIndex; i >= firstIndex; --i) {
+ if (m_model->expandedParentsCount(i) != parents) {
+ widget = 0;
+ break;
+ }
+ }
+ }
+ }
+
+ if (widget) {
+ // Performance optimization: Use the sibling information of the visible
+ // widget beside the given range.
+ previousSiblings = widget->siblingsInformation();
+ if (previousSiblings.isEmpty()) {
+ return;
+ }
+ previousParents = previousSiblings.count() - 1;
+ previousSiblings.truncate(previousParents);
+ } else {
+ // Potentially slow path: Go back to the upper most parent of firstIndex
+ // to be able to calculate the initial value for the siblings.
+ while (rootIndex > 0 && m_model->expandedParentsCount(rootIndex) > 0) {
+ --rootIndex;
+ }
+ }
+
+ Q_ASSERT(previousParents >= 0);
+ for (int i = rootIndex; i <= lastIndex; ++i) {
+ // Update the parent-siblings in case if the current item represents
+ // a child or an upper parent.
+ const int currentParents = m_model->expandedParentsCount(i);
+ Q_ASSERT(currentParents >= 0);
+ if (previousParents < currentParents) {
+ previousParents = currentParents;
+ previousSiblings.resize(currentParents);
+ previousSiblings.setBit(currentParents - 1, hasSiblingSuccessor(i - 1));
+ } else if (previousParents > currentParents) {
+ previousParents = currentParents;
+ previousSiblings.truncate(currentParents);
+ }
+
+ if (i >= firstIndex) {
+ // The index represents a visible item. Apply the parent-siblings
+ // and update the sibling of the current item.
+ KItemListWidget* widget = m_visibleItems.value(i);
+ if (!widget) {
+ continue;
+ }
+
+ QBitArray siblings = previousSiblings;
+ siblings.resize(siblings.count() + 1);
+ siblings.setBit(siblings.count() - 1, hasSiblingSuccessor(i));
+
+ widget->setSiblingsInformation(siblings);
+ }
+ }
+}
+
+bool KItemListView::hasSiblingSuccessor(int index) const
+{
+ bool hasSuccessor = false;
+ const int parentsCount = m_model->expandedParentsCount(index);
+ int successorIndex = index + 1;
+
+ // Search the next sibling
+ const int itemCount = m_model->count();
+ while (successorIndex < itemCount) {
+ const int currentParentsCount = m_model->expandedParentsCount(successorIndex);
+ if (currentParentsCount == parentsCount) {
+ hasSuccessor = true;
+ break;
+ } else if (currentParentsCount < parentsCount) {
+ break;
+ }
+ ++successorIndex;
+ }
+
+ if (m_grouped && hasSuccessor) {
+ // If the sibling is part of another group, don't mark it as
+ // successor as the group header is between the sibling connections.
+ for (int i = index + 1; i <= successorIndex; ++i) {
+ if (m_layouter->isFirstGroupItem(i)) {
+ hasSuccessor = false;
+ break;
+ }
+ }
+ }
+
+ return hasSuccessor;
+}
+
+void KItemListView::disconnectRoleEditingSignals(int index)
+{
+ KStandardItemListWidget* widget = qobject_cast<KStandardItemListWidget *>(m_visibleItems.value(index));
+ if (!widget) {
+ return;
+ }
+
+ disconnect(widget, &KItemListWidget::roleEditingCanceled, this, nullptr);
+ disconnect(widget, &KItemListWidget::roleEditingFinished, this, nullptr);
+ disconnect(this, &KItemListView::scrollOffsetChanged, widget, nullptr);
+}
+
int KItemListView::calculateAutoScrollingIncrement(int pos, int range, int oldInc)
{
int inc = 0;
return inc;
}
+int KItemListView::itemsPerSize(qreal size, qreal itemSize, qreal itemMargin)
+{
+ const qreal availableSize = size - itemMargin;
+ const int count = availableSize / (itemSize + itemMargin);
+ return count;
+}
+
KItemListCreatorBase::~KItemListCreatorBase()
pushRecycleableWidget(header);
}
-#include "kitemlistview.moc"
projects / dolphin.git / blobdiff