mirror of
https://invent.kde.org/system/dolphin
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117 lines
3.4 KiB
C++
117 lines
3.4 KiB
C++
/*
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* SPDX-FileCopyrightText: 2011 Peter Penz <peter.penz19@gmail.com>
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#ifndef KITEMLISTGROUPHEADER_H
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#define KITEMLISTGROUPHEADER_H
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#include "dolphin_export.h"
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#include "kitemviews/kitemliststyleoption.h"
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#include <QByteArray>
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#include <QGraphicsWidget>
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#include <QVariant>
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class KItemListView;
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/**
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* @brief Base class for group headers.
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*
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* Draws a default header background. Derived classes must reimplement
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* the method paint() and draw the role within the given roleBounds() with
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* the color roleColor().
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*/
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class DOLPHIN_EXPORT KItemListGroupHeader : public QGraphicsWidget
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{
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Q_OBJECT
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public:
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explicit KItemListGroupHeader(QGraphicsWidget *parent = nullptr);
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~KItemListGroupHeader() override;
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void setRole(const QByteArray &role);
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QByteArray role() const;
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void setData(const QVariant &data);
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QVariant data() const;
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void setStyleOption(const KItemListStyleOption &option);
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const KItemListStyleOption &styleOption() const;
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/**
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* Sets the scroll orientation that is used by the KItemListView.
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* This allows the group header to use a modified look dependent
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* on the orientation.
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*/
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void setScrollOrientation(Qt::Orientation orientation);
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Qt::Orientation scrollOrientation() const;
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void setItemIndex(int index);
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int itemIndex() const;
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void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget = nullptr) override;
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protected:
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virtual void paintRole(QPainter *painter, const QRectF &roleBounds, const QColor &color) = 0;
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virtual void paintSeparator(QPainter *painter, const QColor &color) = 0;
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/**
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* Is called after the role has been changed and allows the derived class
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* to react on this change.
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*/
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virtual void roleChanged(const QByteArray ¤t, const QByteArray &previous);
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/**
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* Is called after the role has been changed and allows the derived class
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* to react on this change.
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*/
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virtual void dataChanged(const QVariant ¤t, const QVariant &previous);
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/**
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* Is called after the style option has been changed and allows the derived class
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* to react on this change.
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*/
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virtual void styleOptionChanged(const KItemListStyleOption ¤t, const KItemListStyleOption &previous);
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/**
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* Is called after the scroll orientation has been changed and allows the derived class
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* to react on this change.
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*/
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virtual void scrollOrientationChanged(Qt::Orientation current, Qt::Orientation previous);
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/**
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* Is called after the item index has been changed and allows the derived class to react on
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* this change.
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*/
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virtual void itemIndexChanged(int current, int previous);
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void resizeEvent(QGraphicsSceneResizeEvent *event) override;
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virtual QPalette::ColorRole normalTextColorRole() const;
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virtual QPalette::ColorRole normalBaseColorRole() const;
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private:
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void updateCache();
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void updateSize();
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static QColor mixedColor(const QColor &c1, const QColor &c2, int c1Percent = 50);
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QColor textColor() const;
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QColor baseColor() const;
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private:
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bool m_dirtyCache;
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QByteArray m_role;
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QVariant m_data;
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KItemListStyleOption m_styleOption;
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Qt::Orientation m_scrollOrientation;
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int m_itemIndex;
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QColor m_separatorColor;
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QColor m_roleColor;
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QRectF m_roleBounds;
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};
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#endif
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