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* This item delegate will forward on either to a specified other delegate or to the base implementation. This allows chaining delegates (i.e. having one built-in to the widget, which forwards to a user-set delegate).
121 lines
4.2 KiB
C++
121 lines
4.2 KiB
C++
/******************************************************************************
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* The MIT License (MIT)
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*
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* Copyright (c) 2017 Baldur Karlsson
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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******************************************************************************/
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#pragma once
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#include <QLabel>
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#include <QStyledItemDelegate>
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#include <QTreeView>
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#include "Code/QRDUtils.h"
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class RDTreeView;
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class RDTreeViewDelegate : public ForwardingDelegate
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{
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private:
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Q_OBJECT
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// I hate the mutable keyword, but it's necessary to modify it inside sizeHint to access in
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// initStyleOption. There's no other way to only remove the icon while in sizeHint, and not in
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// other places that call initStyleOption. We don't want to try and manually init, since if
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// there's a forwarded delegate it might do something different.
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mutable bool m_suppressIcon = false;
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RDTreeView *m_View;
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public:
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RDTreeViewDelegate(RDTreeView *view);
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QSize sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const override;
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protected:
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void initStyleOption(QStyleOptionViewItem *option, const QModelIndex &index) const override;
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};
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class RDTipLabel : public QLabel
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{
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private:
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Q_OBJECT
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int m_TooltipMargin = 0;
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public:
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explicit RDTipLabel();
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int tipMargin() { return m_TooltipMargin; }
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protected:
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void paintEvent(QPaintEvent *);
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void resizeEvent(QResizeEvent *);
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};
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class RDTreeView : public QTreeView
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{
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Q_OBJECT
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public:
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explicit RDTreeView(QWidget *parent = 0);
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virtual ~RDTreeView();
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void showBranches() { m_VisibleBranches = true; }
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void hideBranches() { m_VisibleBranches = false; }
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void showGridLines() { m_VisibleGridLines = true; }
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void hideGridLines() { m_VisibleGridLines = false; }
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bool visibleGridLines() { return m_VisibleGridLines; }
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void setTooltipElidedItems(bool tool) { m_TooltipElidedItems = tool; }
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bool tooltipElidedItems() { return m_TooltipElidedItems; }
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void setItemVerticalMargin(int vertical) { m_VertMargin = vertical; }
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int verticalItemMargin() { return m_VertMargin; }
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void setIgnoreIconSize(bool ignore) { m_IgnoreIconSize = ignore; }
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bool ignoreIconSize() { return m_IgnoreIconSize; }
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void setItemDelegate(QAbstractItemDelegate *delegate);
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QAbstractItemDelegate *itemDelegate() const;
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protected:
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void rowsAboutToBeRemoved(const QModelIndex &parent, int start, int end) override;
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void mouseMoveEvent(QMouseEvent *e) override;
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void wheelEvent(QWheelEvent *e) override;
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void leaveEvent(QEvent *e) override;
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bool viewportEvent(QEvent *event) override;
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void drawRow(QPainter *painter, const QStyleOptionViewItem &options,
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const QModelIndex &index) const override;
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void drawBranches(QPainter *painter, const QRect &rect, const QModelIndex &index) const override;
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void fillBranchesRect(QPainter *painter, const QRect &rect, const QModelIndex &index) const;
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void enableBranchRectFill(bool fill) { m_fillBranchRect = fill; }
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QModelIndex m_currentHoverIndex;
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private:
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bool m_VisibleBranches = true;
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bool m_VisibleGridLines = true;
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bool m_TooltipElidedItems = true;
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QAbstractItemDelegate *m_userDelegate = NULL;
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RDTreeViewDelegate *m_delegate;
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RDTipLabel *m_ElidedTooltip;
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int m_VertMargin = 6;
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bool m_IgnoreIconSize = false;
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bool m_fillBranchRect = true;
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};
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