mirror of
https://invent.kde.org/system/dolphin
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133 lines
4.6 KiB
C++
133 lines
4.6 KiB
C++
/***************************************************************************
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* Copyright (C) 2011 by Peter Penz <peter.penz19@gmail.com> *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *
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***************************************************************************/
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#ifndef KITEMLISTGROUPHEADER_H
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#define KITEMLISTGROUPHEADER_H
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#include <libdolphin_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 LIBDOLPHINPRIVATE_EXPORT KItemListGroupHeader : public QGraphicsWidget
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{
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Q_OBJECT
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public:
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KItemListGroupHeader(QGraphicsWidget* parent = 0);
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virtual ~KItemListGroupHeader();
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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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virtual void paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget = 0);
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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& current, 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& current, 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& current, 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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/** @reimp */
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virtual void resizeEvent(QGraphicsSceneResizeEvent* event);
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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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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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