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/**
* This file is part of the KDE project
* Copyright (C) 2007, 2009 Rafael Fernández López <ereslibre@kde.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef KCATEGORIZEDVIEW_P_H
#define KCATEGORIZEDVIEW_P_H
class KCategorizedSortFilterProxyModel;
class KCategoryDrawer;
class KCategoryDrawerV2;
class KCategoryDrawerV3;
/**
* @internal
*/
class KCategorizedView::Private
{
public:
struct Block;
struct Item;
Private(KCategorizedView *q);
~Private();
/**
* @return whether this view has all required elements to be categorized.
*/
bool isCategorized() const;
/**
* @return the block rect for the representative @p representative.
*/
QStyleOptionViewItemV4 blockRect(const QModelIndex &representative);
/**
* Returns the first and last element that intersects with rect.
*
* @note see that here we cannot take out items between first and last (as we could
* do with the rubberband).
*
* Complexity: O(log(n)) where n is model()->rowCount().
*/
QPair<QModelIndex, QModelIndex> intersectingIndexesWithRect(const QRect &rect) const;
/**
* Returns the position of the block of @p category.
*
* Complexity: O(n) where n is the number of different categories when the block has been
* marked as in quarantine. O(1) the rest of the times (the vast majority).
*/
QPoint blockPosition(const QString &category);
/**
* Returns the height of the block determined by @p category.
*/
int blockHeight(const QString &category);
/**
* Returns the actual viewport width.
*/
int viewportWidth() const;
/**
* Marks all elements as in quarantine.
*
* Complexity: O(n) where n is model()->rowCount().
*
* @warning this is an expensive operation
*/
void regenerateAllElements();
/**
* Update internal information, and keep sync with the real information that the model contains.
*/
void rowsInserted(const QModelIndex &parent, int start, int end);
/**
* Returns @p rect in viewport terms, taking in count horizontal and vertical offsets.
*/
QRect mapToViewport(const QRect &rect) const;
/**
* Returns @p rect in absolute terms, converted from viewport position.
*/
QRect mapFromViewport(const QRect &rect) const;
/**
* Returns the height of the highest element in last row. This is only applicable if there is
* no grid set and uniformItemSizes is false.
*
* @param block in which block are we searching. Necessary to stop the search if we hit the
* first item in this block.
*/
int highestElementInLastRow(const Block &block) const;
/**
* Returns whether the view has a valid grid size.
*/
bool hasGrid() const;
/**
* Returns the category for the given index.
*/
QString categoryForIndex(const QModelIndex &index) const;
/**
* Updates the visual rect for item when flow is LeftToRight.
*/
void leftToRightVisualRect(const QModelIndex &index, Item &item,
const Block &block, const QPoint &blockPos) const;
/**
* Updates the visual rect for item when flow is TopToBottom.
* @note we only support viewMode == ListMode in this case.
*/
void topToBottomVisualRect(const QModelIndex &index, Item &item,
const Block &block, const QPoint &blockPos) const;
/**
* Called when expand or collapse has been clicked on the category drawer.
*/
void _k_slotCollapseOrExpandClicked(QModelIndex);
KCategorizedView *q;
KCategorizedSortFilterProxyModel *proxyModel;
KCategoryDrawer *categoryDrawer;
int categorySpacing;
bool alternatingBlockColors;
bool collapsibleBlocks;
bool constantItemWidth;
Block *hoveredBlock;
QString hoveredCategory;
QModelIndex hoveredIndex;
QPoint pressedPosition;
QRect rubberBandRect;
QHash<QString, Block> blocks;
};
#endif // KCATEGORIZEDVIEW_P_H
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