diff options
Diffstat (limited to 'src/kitemviews/kitemlistviewlayouter.cpp')
| -rw-r--r-- | src/kitemviews/kitemlistviewlayouter.cpp | 88 |
1 files changed, 59 insertions, 29 deletions
diff --git a/src/kitemviews/kitemlistviewlayouter.cpp b/src/kitemviews/kitemlistviewlayouter.cpp index 14774c412..744914929 100644 --- a/src/kitemviews/kitemlistviewlayouter.cpp +++ b/src/kitemviews/kitemlistviewlayouter.cpp @@ -49,7 +49,7 @@ KItemListViewLayouter::KItemListViewLayouter(QObject* parent) : m_groupItemIndexes(), m_groupHeaderHeight(0), m_groupHeaderMargin(0), - m_itemRects() + m_itemInfos() { } @@ -227,14 +227,14 @@ int KItemListViewLayouter::lastVisibleIndex() const QRectF KItemListViewLayouter::itemRect(int index) const { const_cast<KItemListViewLayouter*>(this)->doLayout(); - if (index < 0 || index >= m_itemRects.count()) { + if (index < 0 || index >= m_itemInfos.count()) { return QRectF(); } if (m_scrollOrientation == Qt::Horizontal) { // Rotate the logical direction which is always vertical by 90° // to get the physical horizontal direction - const QRectF& b = m_itemRects[index]; + const QRectF& b = m_itemInfos[index].rect; QRectF bounds(b.y(), b.x(), b.height(), b.width()); QPointF pos = bounds.topLeft(); pos.rx() -= m_scrollOffset; @@ -242,7 +242,7 @@ QRectF KItemListViewLayouter::itemRect(int index) const return bounds; } - QRectF bounds = m_itemRects[index]; + QRectF bounds = m_itemInfos[index].rect; bounds.moveTo(bounds.topLeft() - QPointF(m_itemOffset, m_scrollOffset)); return bounds; } @@ -271,10 +271,10 @@ QRectF KItemListViewLayouter::groupHeaderRect(int index) const // Qt::Horizontal and m_itemRects is accessed directly, // the logical height represents the visual width. qreal width = minimumGroupHeaderWidth(); - const qreal y = m_itemRects[index].y(); - const int maxIndex = m_itemRects.count() - 1; + const qreal y = m_itemInfos[index].rect.y(); + const int maxIndex = m_itemInfos.count() - 1; while (index <= maxIndex) { - QRectF bounds = m_itemRects[index]; + QRectF bounds = m_itemInfos[index].rect; if (bounds.y() != y) { break; } @@ -291,6 +291,30 @@ QRectF KItemListViewLayouter::groupHeaderRect(int index) const return QRectF(pos, size); } +int KItemListViewLayouter::itemColumn(int index) const +{ + const_cast<KItemListViewLayouter*>(this)->doLayout(); + if (index < 0 || index >= m_itemInfos.count()) { + return -1; + } + + return (m_scrollOrientation == Qt::Vertical) + ? m_itemInfos[index].column + : m_itemInfos[index].row; +} + +int KItemListViewLayouter::itemRow(int index) const +{ + const_cast<KItemListViewLayouter*>(this)->doLayout(); + if (index < 0 || index >= m_itemInfos.count()) { + return -1; + } + + return (m_scrollOrientation == Qt::Vertical) + ? m_itemInfos[index].row + : m_itemInfos[index].column; +} + int KItemListViewLayouter::maximumVisibleItems() const { const_cast<KItemListViewLayouter*>(this)->doLayout(); @@ -371,10 +395,10 @@ void KItemListViewLayouter::doLayout() ++rowCount; } - m_itemRects.reserve(itemCount); + m_itemInfos.reserve(itemCount); qreal y = m_headerHeight + itemMargin.height(); - int rowIndex = 0; + int row = 0; int index = 0; while (index < itemCount) { @@ -419,10 +443,16 @@ void KItemListViewLayouter::doLayout() } const QRectF bounds(x, y, itemSize.width(), requiredItemHeight); - if (index < m_itemRects.count()) { - m_itemRects[index] = bounds; + if (index < m_itemInfos.count()) { + m_itemInfos[index].rect = bounds; + m_itemInfos[index].column = column; + m_itemInfos[index].row = row; } else { - m_itemRects.append(bounds); + ItemInfo itemInfo; + itemInfo.rect = bounds; + itemInfo.column = column; + itemInfo.row = row; + m_itemInfos.append(itemInfo); } if (grouped && horizontalScrolling) { @@ -457,21 +487,21 @@ void KItemListViewLayouter::doLayout() } y += maxItemHeight + itemMargin.height(); - ++rowIndex; + ++row; } - if (m_itemRects.count() > itemCount) { - m_itemRects.erase(m_itemRects.begin() + itemCount, - m_itemRects.end()); + if (m_itemInfos.count() > itemCount) { + m_itemInfos.erase(m_itemInfos.begin() + itemCount, + m_itemInfos.end()); } - + if (itemCount > 0) { // Calculate the maximum y-range of the last row for m_maximumScrollOffset - m_maximumScrollOffset = m_itemRects.last().bottom(); - const qreal rowY = m_itemRects.last().y(); + m_maximumScrollOffset = m_itemInfos.last().rect.bottom(); + const qreal rowY = m_itemInfos.last().rect.y(); - int index = m_itemRects.count() - 2; - while (index >= 0 && m_itemRects.at(index).bottom() >= rowY) { - m_maximumScrollOffset = qMax(m_maximumScrollOffset, m_itemRects.at(index).bottom()); + int index = m_itemInfos.count() - 2; + while (index >= 0 && m_itemInfos[index].rect.bottom() >= rowY) { + m_maximumScrollOffset = qMax(m_maximumScrollOffset, m_itemInfos[index].rect.bottom()); --index; } @@ -515,7 +545,7 @@ void KItemListViewLayouter::updateVisibleIndexes() int mid = 0; do { mid = (min + max) / 2; - if (m_itemRects[mid].top() < m_scrollOffset) { + if (m_itemInfos[mid].rect.top() < m_scrollOffset) { min = mid + 1; } else { max = mid - 1; @@ -525,13 +555,13 @@ void KItemListViewLayouter::updateVisibleIndexes() if (mid > 0) { // Include the row before the first fully visible index, as it might // be partly visible - if (m_itemRects[mid].top() >= m_scrollOffset) { + if (m_itemInfos[mid].rect.top() >= m_scrollOffset) { --mid; - Q_ASSERT(m_itemRects[mid].top() < m_scrollOffset); + Q_ASSERT(m_itemInfos[mid].rect.top() < m_scrollOffset); } - const qreal rowTop = m_itemRects[mid].top(); - while (mid > 0 && m_itemRects[mid - 1].top() == rowTop) { + const qreal rowTop = m_itemInfos[mid].rect.top(); + while (mid > 0 && m_itemInfos[mid - 1].rect.top() == rowTop) { --mid; } } @@ -548,14 +578,14 @@ void KItemListViewLayouter::updateVisibleIndexes() max = maxIndex; do { mid = (min + max) / 2; - if (m_itemRects[mid].y() <= bottom) { + if (m_itemInfos[mid].rect.y() <= bottom) { min = mid + 1; } else { max = mid - 1; } } while (min <= max); - while (mid > 0 && m_itemRects[mid].y() > bottom) { + while (mid > 0 && m_itemInfos[mid].rect.y() > bottom) { --mid; } m_lastVisibleIndex = mid; |