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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QLISTVIEW_P_H
+#define QLISTVIEW_P_H
+
+//
+// W A R N I N G
+// -------------
+//
+// This file is not part of the Qt API. It exists for the convenience
+// of other Qt classes. This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "private/qabstractitemview_p.h"
+#include "qrubberband.h"
+#include "qbitarray.h"
+#include "qbsptree_p.h"
+#include <limits.h>
+#include <qscrollbar.h>
+
+#ifndef QT_NO_LISTVIEW
+
+QT_BEGIN_NAMESPACE
+
+class QListViewItem
+{
+ friend class QListViewPrivate;
+ friend class QStaticListViewBase;
+ friend class QDynamicListViewBase;
+public:
+ inline QListViewItem()
+ : x(-1), y(-1), w(0), h(0), indexHint(-1), visited(0xffff) {}
+ inline QListViewItem(const QListViewItem &other)
+ : x(other.x), y(other.y), w(other.w), h(other.h),
+ indexHint(other.indexHint), visited(other.visited) {}
+ inline QListViewItem(QRect r, int i)
+ : x(r.x()), y(r.y()), w(qMin(r.width(), SHRT_MAX)), h(qMin(r.height(), SHRT_MAX)),
+ indexHint(i), visited(0xffff) {}
+ inline bool operator==(const QListViewItem &other) const {
+ return (x == other.x && y == other.y && w == other.w && h == other.h &&
+ indexHint == other.indexHint); }
+ inline bool operator!=(const QListViewItem &other) const
+ { return !(*this == other); }
+ inline bool isValid() const
+ { return (x > -1) && (y > -1) && (w > 0) && (h > 0) && (indexHint > -1); }
+ inline void invalidate()
+ { x = -1; y = -1; w = 0; h = 0; }
+ inline void resize(const QSize &size)
+ { w = qMin(size.width(), SHRT_MAX); h = qMin(size.height(), SHRT_MAX); }
+ inline void move(const QPoint &position)
+ { x = position.x(); y = position.y(); }
+ inline int width() const { return w; }
+ inline int height() const { return h; }
+private:
+ inline QRect rect() const
+ { return QRect(x, y, w, h); }
+ int x, y;
+ short w, h;
+ mutable int indexHint;
+ uint visited;
+};
+
+struct QListViewLayoutInfo
+{
+ QRect bounds;
+ QSize grid;
+ int spacing;
+ int first;
+ int last;
+ bool wrap;
+ QListView::Flow flow;
+ int max;
+};
+
+class QListView;
+class QListViewPrivate;
+
+class QCommonListViewBase
+{
+public:
+ inline QCommonListViewBase(QListView *q, QListViewPrivate *d) : dd(d), qq(q) {}
+
+ inline int spacing() const;
+ inline bool isWrapping() const;
+ inline QSize gridSize() const;
+ inline QListView::Flow flow() const;
+ inline QListView::Movement movement() const;
+
+ inline QPoint offset() const;
+ inline QPoint pressedPosition() const;
+ inline bool uniformItemSizes() const;
+ inline int column() const;
+
+ inline int verticalScrollBarValue() const;
+ inline int horizontalScrollBarValue() const;
+ inline QListView::ScrollMode verticalScrollMode() const;
+ inline QListView::ScrollMode horizontalScrollMode() const;
+
+ inline QModelIndex modelIndex(int row) const;
+ inline int rowCount() const;
+
+ inline QStyleOptionViewItemV4 viewOptions() const;
+ inline QWidget *viewport() const;
+ inline QRect clipRect() const;
+
+ inline QSize cachedItemSize() const;
+ inline QRect viewItemRect(const QListViewItem &item) const;
+ inline QSize itemSize(const QStyleOptionViewItemV2 &opt, const QModelIndex &idx) const;
+ inline QAbstractItemDelegate *delegate(const QModelIndex &idx) const;
+
+ inline bool isHidden(int row) const;
+ inline int hiddenCount() const;
+
+ inline void clearIntersections() const;
+ inline void appendToIntersections(const QModelIndex &idx) const;
+
+ inline bool isRightToLeft() const;
+
+ QListViewPrivate *dd;
+ QListView *qq;
+};
+
+// ### rename to QListModeViewBase
+class QStaticListViewBase : public QCommonListViewBase
+{
+ friend class QListViewPrivate;
+public:
+ QStaticListViewBase(QListView *q, QListViewPrivate *d) : QCommonListViewBase(q, d),
+ batchStartRow(0), batchSavedDeltaSeg(0), batchSavedPosition(0) {}
+
+ QVector<int> flowPositions;
+ QVector<int> segmentPositions;
+ QVector<int> segmentStartRows;
+ QVector<int> segmentExtents;
+
+ QSize contentsSize;
+
+ // used when laying out in batches
+ int batchStartRow;
+ int batchSavedDeltaSeg;
+ int batchSavedPosition;
+
+ bool doBatchedItemLayout(const QListViewLayoutInfo &info, int max);
+
+ QPoint initStaticLayout(const QListViewLayoutInfo &info);
+ void doStaticLayout(const QListViewLayoutInfo &info);
+ void intersectingStaticSet(const QRect &area) const;
+
+ int itemIndex(const QListViewItem &item) const;
+
+ int perItemScrollingPageSteps(int length, int bounds, bool wrap) const;
+
+ int perItemScrollToValue(int index, int value, int height,
+ QAbstractItemView::ScrollHint hint,
+ Qt::Orientation orientation, bool wrap, int extent) const;
+
+ QRect mapToViewport(const QRect &rect) const;
+
+ QListViewItem indexToListViewItem(const QModelIndex &index) const;
+
+ void scrollContentsBy(int &dx, int &dy);
+
+ int verticalPerItemValue(int itemIndex, int verticalValue, int areaHeight,
+ bool above, bool below, bool wrap, QListView::ScrollHint hint, int itemHeight) const;
+ int horizontalPerItemValue(int itemIndex, int horizontalValue, int areaWidth,
+ bool leftOf, bool rightOf, bool wrap, QListView::ScrollHint hint, int itemWidth) const;
+
+ void clear();
+};
+
+// ### rename to QIconModeViewBase
+class QDynamicListViewBase : public QCommonListViewBase
+{
+ friend class QListViewPrivate;
+public:
+ QDynamicListViewBase(QListView *q, QListViewPrivate *d) : QCommonListViewBase(q, d),
+ batchStartRow(0), batchSavedDeltaSeg(0) {}
+
+ QBspTree tree;
+ QVector<QListViewItem> items;
+ QBitArray moved;
+
+ QSize contentsSize;
+
+ QVector<QModelIndex> draggedItems; // indices to the tree.itemVector
+ mutable QPoint draggedItemsPos;
+
+ // used when laying out in batches
+ int batchStartRow;
+ int batchSavedDeltaSeg;
+
+ void dataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight);
+ bool doBatchedItemLayout(const QListViewLayoutInfo &info, int max);
+
+ void initBspTree(const QSize &contents);
+ QPoint initDynamicLayout(const QListViewLayoutInfo &info);
+ void doDynamicLayout(const QListViewLayoutInfo &info);
+ void intersectingDynamicSet(const QRect &area) const;
+
+ static void addLeaf(QVector<int> &leaf, const QRect &area,
+ uint visited, QBspTree::Data data);
+
+ void insertItem(int index);
+ void removeItem(int index);
+ void moveItem(int index, const QPoint &dest);
+
+ int itemIndex(const QListViewItem &item) const;
+
+ void createItems(int to);
+ void drawItems(QPainter *painter, const QVector<QModelIndex> &indexes) const;
+ QRect itemsRect(const QVector<QModelIndex> &indexes) const;
+
+ QPoint draggedItemsDelta() const;
+ QRect draggedItemsRect() const;
+
+ QPoint snapToGrid(const QPoint &pos) const;
+
+ void scrollElasticBandBy(int dx, int dy);
+
+ QListViewItem indexToListViewItem(const QModelIndex &index) const;
+
+ void clear();
+ void updateContentsSize();
+};
+
+class QListViewPrivate: public QAbstractItemViewPrivate
+{
+ Q_DECLARE_PUBLIC(QListView)
+public:
+ QListViewPrivate();
+ ~QListViewPrivate();
+
+ void clear();
+ void prepareItemsLayout();
+
+ bool doItemsLayout(int num);
+
+ inline void intersectingSet(const QRect &area, bool doLayout = true) const {
+ if (doLayout) executePostedLayout();
+ QRect a = (q_func()->isRightToLeft() ? flipX(area.normalized()) : area.normalized());
+ if (viewMode == QListView::ListMode) staticListView->intersectingStaticSet(a);
+ else dynamicListView->intersectingDynamicSet(a);
+ }
+
+ // ### FIXME:
+ inline void resetBatchStartRow()
+ { if (viewMode == QListView::ListMode) staticListView->batchStartRow = 0;
+ else dynamicListView->batchStartRow = 0; }
+ inline int batchStartRow() const
+ { return (viewMode == QListView::ListMode
+ ? staticListView->batchStartRow : dynamicListView->batchStartRow); }
+ inline QSize contentsSize() const
+ { return (viewMode == QListView::ListMode
+ ? staticListView->contentsSize : dynamicListView->contentsSize); }
+ inline void setContentsSize(int w, int h)
+ { if (viewMode == QListView::ListMode) staticListView->contentsSize = QSize(w, h);
+ else dynamicListView->contentsSize = QSize(w, h); }
+
+ inline int flipX(int x) const
+ { return qMax(viewport->width(), contentsSize().width()) - x; }
+ inline QPoint flipX(const QPoint &p) const
+ { return QPoint(flipX(p.x()), p.y()); }
+ inline QRect flipX(const QRect &r) const
+ { return QRect(flipX(r.x()) - r.width(), r.y(), r.width(), r.height()); }
+ inline QRect viewItemRect(const QListViewItem &item) const
+ { if (q_func()->isRightToLeft()) return flipX(item.rect()); return item.rect(); }
+
+ int itemIndex(const QListViewItem &item) const;
+ QListViewItem indexToListViewItem(const QModelIndex &index) const;
+ inline QModelIndex listViewItemToIndex(const QListViewItem &item) const
+ { return model->index(itemIndex(item), column, root); }
+
+ QRect mapToViewport(const QRect &rect, bool greedy = false) const;
+
+ QModelIndex closestIndex(const QRect &target, const QVector<QModelIndex> &candidates) const;
+ QSize itemSize(const QStyleOptionViewItem &option, const QModelIndex &index) const;
+
+ bool selectionAllowed(const QModelIndex &index) const
+ { if (viewMode == QListView::ListMode && !showElasticBand) return index.isValid(); return true; }
+
+ int horizontalScrollToValue(const QModelIndex &index, const QRect &rect, QListView::ScrollHint hint) const;
+ int verticalScrollToValue(const QModelIndex &index, const QRect &rect, QListView::ScrollHint hint) const;
+
+ QItemSelection selection(const QRect &rect) const;
+ void selectAll(QItemSelectionModel::SelectionFlags command);
+
+ inline void setGridSize(const QSize &size) { grid = size; }
+ inline QSize gridSize() const { return grid; }
+ inline void setWrapping(bool b) { wrap = b; }
+ inline bool isWrapping() const { return wrap; }
+ inline void setSpacing(int s) { space = s; }
+ inline int spacing() const { return space; }
+ inline void setSelectionRectVisible(bool visible) { showElasticBand = visible; }
+ inline bool isSelectionRectVisible() const { return showElasticBand; }
+
+ inline QModelIndex modelIndex(int row) const { return model->index(row, column, root); }
+ inline bool isHidden(int row) const { return hiddenRows.contains(model->index(row, 0, root)); }
+ inline bool isHiddenOrDisabled(int row) const { return isHidden(row) || !isIndexEnabled(modelIndex(row)); }
+
+ inline void removeCurrentAndDisabled(QVector<QModelIndex> *indexes, const QModelIndex &current) const {
+ QVector<QModelIndex>::iterator it = indexes->begin();
+ while (it != indexes->end()) {
+ if (!isIndexEnabled(*it) || (*it) == current)
+ indexes->erase(it);
+ else
+ ++it;
+ }
+ }
+
+ void scrollElasticBandBy(int dx, int dy);
+
+ // ### FIXME: we only need one at a time
+ QDynamicListViewBase *dynamicListView;
+ QStaticListViewBase *staticListView;
+
+ // ### FIXME: see if we can move the members into the dynamic/static classes
+
+ bool wrap;
+ int space;
+ QSize grid;
+
+ QListView::Flow flow;
+ QListView::Movement movement;
+ QListView::ResizeMode resizeMode;
+ QListView::LayoutMode layoutMode;
+ QListView::ViewMode viewMode;
+
+ // the properties controlling the
+ // icon- or list-view modes
+ enum ModeProperties {
+ Wrap = 1,
+ Spacing = 2,
+ GridSize = 4,
+ Flow = 8,
+ Movement = 16,
+ ResizeMode = 32,
+ SelectionRectVisible = 64
+ };
+
+ uint modeProperties : 8;
+
+ QRect layoutBounds;
+
+ // used for intersecting set
+ mutable QVector<QModelIndex> intersectVector;
+
+ // timers
+ QBasicTimer batchLayoutTimer;
+
+ // used for hidden items
+ QVector<QPersistentModelIndex> hiddenRows;
+
+ int column;
+ bool uniformItemSizes;
+ mutable QSize cachedItemSize;
+ int batchSize;
+
+ QRect elasticBand;
+ bool showElasticBand;
+};
+
+// inline implementations
+
+inline int QCommonListViewBase::spacing() const { return dd->spacing(); }
+inline bool QCommonListViewBase::isWrapping() const { return dd->isWrapping(); }
+inline QSize QCommonListViewBase::gridSize() const { return dd->gridSize(); }
+inline QListView::Flow QCommonListViewBase::flow() const { return dd->flow; }
+inline QListView::Movement QCommonListViewBase::movement() const { return dd->movement; }
+
+inline QPoint QCommonListViewBase::offset() const { return dd->offset(); }
+inline QPoint QCommonListViewBase::pressedPosition() const { return dd->pressedPosition; }
+inline bool QCommonListViewBase::uniformItemSizes() const { return dd->uniformItemSizes; }
+inline int QCommonListViewBase::column() const { return dd->column; }
+
+inline int QCommonListViewBase::verticalScrollBarValue() const { return qq->verticalScrollBar()->value(); }
+inline int QCommonListViewBase::horizontalScrollBarValue() const { return qq->horizontalScrollBar()->value(); }
+inline QListView::ScrollMode QCommonListViewBase::verticalScrollMode() const { return qq->verticalScrollMode(); }
+inline QListView::ScrollMode QCommonListViewBase::horizontalScrollMode() const { return qq->horizontalScrollMode(); }
+
+inline QModelIndex QCommonListViewBase::modelIndex(int row) const
+ { return dd->model->index(row, dd->column, dd->root); }
+inline int QCommonListViewBase::rowCount() const { return dd->model->rowCount(dd->root); }
+
+inline QStyleOptionViewItemV4 QCommonListViewBase::viewOptions() const { return dd->viewOptionsV4(); }
+inline QWidget *QCommonListViewBase::viewport() const { return dd->viewport; }
+inline QRect QCommonListViewBase::clipRect() const { return dd->clipRect(); }
+
+inline QSize QCommonListViewBase::cachedItemSize() const { return dd->cachedItemSize; }
+inline QRect QCommonListViewBase::viewItemRect(const QListViewItem &item) const { return dd->viewItemRect(item); }
+inline QSize QCommonListViewBase::itemSize(const QStyleOptionViewItemV2 &opt, const QModelIndex &idx) const
+ { return dd->itemSize(opt, idx); }
+
+inline QAbstractItemDelegate *QCommonListViewBase::delegate(const QModelIndex &idx) const
+ { return dd->delegateForIndex(idx); }
+
+inline bool QCommonListViewBase::isHidden(int row) const { return dd->isHidden(row); }
+inline int QCommonListViewBase::hiddenCount() const { return dd->hiddenRows.count(); }
+
+inline void QCommonListViewBase::clearIntersections() const { dd->intersectVector.clear(); }
+inline void QCommonListViewBase::appendToIntersections(const QModelIndex &idx) const { dd->intersectVector.append(idx); }
+
+inline bool QCommonListViewBase::isRightToLeft() const { return qq->isRightToLeft(); }
+
+QT_END_NAMESPACE
+
+#endif // QT_NO_LISTVIEW
+
+#endif // QLISTVIEW_P_H