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/******************************************************************************
* The MIT License (MIT)
*
* Copyright (c) 2019-2020 Baldur Karlsson
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
******************************************************************************/
#pragma once
#include <QLabel>
#include <QStyledItemDelegate>
#include <QTreeView>
#include "Code/QRDUtils.h"
class RDTreeView;
typedef QSet<uint> RDTreeViewExpansionState;
class RDTreeViewDelegate : public ForwardingDelegate
{
private:
Q_OBJECT
RDTreeView *m_View;
public:
RDTreeViewDelegate(RDTreeView *view);
QSize sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const override;
};
class RDTipLabel : public QLabel
{
private:
Q_OBJECT
int m_TooltipMargin = 0;
QWidget *mouseListener;
public:
explicit RDTipLabel(QWidget *listener = NULL);
int tipMargin() { return m_TooltipMargin; }
protected:
void paintEvent(QPaintEvent *);
void mousePressEvent(QMouseEvent *);
void mouseReleaseEvent(QMouseEvent *);
void mouseDoubleClickEvent(QMouseEvent *);
void resizeEvent(QResizeEvent *);
void sendListenerEvent(QMouseEvent *e);
};
typedef std::function<uint(QModelIndex, uint)> ExpansionKeyGen;
class RDTreeView : public QTreeView
{
Q_OBJECT
Q_PROPERTY(bool customCopyPasteHandler READ customCopyPasteHandler WRITE setCustomCopyPasteHandler)
public:
explicit RDTreeView(QWidget *parent = 0);
virtual ~RDTreeView();
void showBranches() { m_VisibleBranches = true; }
void hideBranches() { m_VisibleBranches = false; }
void showGridLines() { m_VisibleGridLines = true; }
void hideGridLines() { m_VisibleGridLines = false; }
bool visibleGridLines() { return m_VisibleGridLines; }
void setTooltipElidedItems(bool tool) { m_TooltipElidedItems = tool; }
bool tooltipElidedItems() { return m_TooltipElidedItems; }
void setItemVerticalMargin(int vertical) { m_VertMargin = vertical; }
int verticalItemMargin() { return m_VertMargin; }
void setIgnoreIconSize(bool ignore) { m_IgnoreIconSize = ignore; }
bool ignoreIconSize() { return m_IgnoreIconSize; }
bool customCopyPasteHandler() { return m_customCopyPaste; }
void setCustomCopyPasteHandler(bool custom) { m_customCopyPaste = custom; }
QModelIndex currentHoverIndex() const { return m_currentHoverIndex; }
void setItemDelegate(QAbstractItemDelegate *delegate);
QAbstractItemDelegate *itemDelegate() const;
void setModel(QAbstractItemModel *model) override;
// state is the storage to save the expansion state into
// keygen is a function that will take the index of a row and a previous hash, and return the hash
// for that row.
void saveExpansion(RDTreeViewExpansionState &state, const ExpansionKeyGen &keygen);
void applyExpansion(const RDTreeViewExpansionState &state, const ExpansionKeyGen &keygen);
// convenience overloads for the simple case of using a single column's data as hash
void saveExpansion(RDTreeViewExpansionState &state, int keyColumn, int keyRole = Qt::DisplayRole)
{
saveExpansion(state, [keyColumn, keyRole](QModelIndex idx, uint seed) {
return qHash(idx.sibling(idx.row(), keyColumn).data(keyRole).toString(), seed);
});
}
void applyExpansion(const RDTreeViewExpansionState &state, int keyColumn,
int keyRole = Qt::DisplayRole)
{
applyExpansion(state, [keyColumn, keyRole](QModelIndex idx, uint seed) {
return qHash(idx.sibling(idx.row(), keyColumn).data(keyRole).toString(), seed);
});
}
// Internally tracked expansions
RDTreeViewExpansionState &getInternalExpansion(uint expansionID)
{
return m_Expansions[expansionID];
}
bool hasInternalExpansion(uint expansionID) { return m_Expansions.contains(expansionID); }
void clearInternalExpansions() { m_Expansions.clear(); }
virtual void copySelection();
void expandAll(QModelIndex index);
void collapseAll(QModelIndex index);
using QTreeView::expandAll;
using QTreeView::collapseAll;
signals:
void leave(QEvent *e);
void keyPress(QKeyEvent *e);
protected:
void mouseMoveEvent(QMouseEvent *e) override;
void wheelEvent(QWheelEvent *e) override;
void leaveEvent(QEvent *e) override;
void keyPressEvent(QKeyEvent *e) override;
bool viewportEvent(QEvent *event) override;
void contextMenuEvent(QContextMenuEvent *event) override;
void drawRow(QPainter *painter, const QStyleOptionViewItem &options,
const QModelIndex &index) const override;
void drawBranches(QPainter *painter, const QRect &rect, const QModelIndex &index) const override;
void fillBranchesRect(QPainter *painter, const QRect &rect, const QModelIndex &index) const;
void enableBranchRectFill(bool fill) { m_fillBranchRect = fill; }
QModelIndex m_currentHoverIndex;
private slots:
void modelAboutToBeReset();
private:
bool m_VisibleBranches = true;
bool m_VisibleGridLines = true;
bool m_TooltipElidedItems = true;
bool m_customCopyPaste = false;
QMap<uint, RDTreeViewExpansionState> m_Expansions;
void saveExpansionFromRow(RDTreeViewExpansionState &state, QModelIndex idx, uint seed,
const ExpansionKeyGen &keygen);
void applyExpansionToRow(const RDTreeViewExpansionState &state, QModelIndex idx, uint seed,
const ExpansionKeyGen &keygen);
QAbstractItemDelegate *m_userDelegate = NULL;
RDTreeViewDelegate *m_delegate;
RDTipLabel *m_ElidedTooltip;
int m_VertMargin = 6;
bool m_IgnoreIconSize = false;
bool m_fillBranchRect = true;
};
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