X-Git-Url: https://cloud.milkyroute.net/gitweb/dolphin.git/blobdiff_plain/eac436d0374d3be323c6ba36799d3cddc98301ea..cebcf8db:/src/kitemviews/kitemlistgroupheader.h

diff --git a/src/kitemviews/kitemlistgroupheader.h b/src/kitemviews/kitemlistgroupheader.h
index 081607eef..1522af0ce 100644
--- a/src/kitemviews/kitemlistgroupheader.h
+++ b/src/kitemviews/kitemlistgroupheader.h
@@ -1,26 +1,14 @@
-/***************************************************************************
- *   Copyright (C) 2011 by Peter Penz <peter.penz19@gmail.com>             *
- *                                                                         *
- *   This program is free software; you can redistribute it and/or modify  *
- *   it under the terms of the GNU General Public License as published by  *
- *   the Free Software Foundation; either version 2 of the License, or     *
- *   (at your option) any later version.                                   *
- *                                                                         *
- *   This program 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 General Public License for more details.                          *
- *                                                                         *
- *   You should have received a copy of the GNU General Public License     *
- *   along with this program; if not, write to the                         *
- *   Free Software Foundation, Inc.,                                       *
- *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
- ***************************************************************************/
+/*
+ * SPDX-FileCopyrightText: 2011 Peter Penz <peter.penz19@gmail.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
 
 #ifndef KITEMLISTGROUPHEADER_H
 #define KITEMLISTGROUPHEADER_H
 
-#include <libdolphin_export.h>
+#include "dolphin_export.h"
+#include "kitemviews/kitemliststyleoption.h"
 
 #include <QByteArray>
 #include <QGraphicsWidget>
@@ -28,32 +16,101 @@
 
 class KItemListView;
 
-class LIBDOLPHINPRIVATE_EXPORT KItemListGroupHeader : public QGraphicsWidget
+/**
+ * @brief Base class for group headers.
+ *
+ * Draws a default header background. Derived classes must reimplement
+ * the method paint() and draw the role within the given roleBounds() with
+ * the color roleColor().
+ */
+class DOLPHIN_EXPORT KItemListGroupHeader : public QGraphicsWidget
 {
     Q_OBJECT
 
 public:
-    KItemListGroupHeader(QGraphicsWidget* parent = 0);
-    virtual ~KItemListGroupHeader();
+    explicit KItemListGroupHeader(QGraphicsWidget *parent = nullptr);
+    ~KItemListGroupHeader() override;
 
-    void setRole(const QByteArray& role);
+    void setRole(const QByteArray &role);
     QByteArray role() const;
 
-    void setData(const QVariant& data);
+    void setData(const QVariant &data);
     QVariant data() const;
 
-    virtual QSizeF sizeHint(Qt::SizeHint which = Qt::PreferredSize, const QSizeF& constraint = QSizeF()) const;
-    virtual void paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget = 0);
+    void setStyleOption(const KItemListStyleOption &option);
+    const KItemListStyleOption &styleOption() const;
+
+    /**
+     * Sets the scroll orientation that is used by the KItemListView.
+     * This allows the group header to use a modified look dependent
+     * on the orientation.
+     */
+    void setScrollOrientation(Qt::Orientation orientation);
+    Qt::Orientation scrollOrientation() const;
+
+    void setItemIndex(int index);
+    int itemIndex() const;
+
+    void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget = nullptr) override;
 
 protected:
-    virtual void roleChanged(const QByteArray& current, const QByteArray& previous);
-    virtual void dataChanged(const QVariant& current, const QVariant& previous);
+    virtual void paintRole(QPainter *painter, const QRectF &roleBounds, const QColor &color) = 0;
+    virtual void paintSeparator(QPainter *painter, const QColor &color) = 0;
+
+    /**
+     * Is called after the role has been changed and allows the derived class
+     * to react on this change.
+     */
+    virtual void roleChanged(const QByteArray &current, const QByteArray &previous);
+
+    /**
+     * Is called after the role has been changed and allows the derived class
+     * to react on this change.
+     */
+    virtual void dataChanged(const QVariant &current, const QVariant &previous);
+
+    /**
+     * Is called after the style option has been changed and allows the derived class
+     * to react on this change.
+     */
+    virtual void styleOptionChanged(const KItemListStyleOption &current, const KItemListStyleOption &previous);
+
+    /**
+     * Is called after the scroll orientation has been changed and allows the derived class
+     * to react on this change.
+     */
+    virtual void scrollOrientationChanged(Qt::Orientation current, Qt::Orientation previous);
+
+    /**
+     * Is called after the item index has been changed and allows the derived class to react on
+     * this change.
+     */
+    virtual void itemIndexChanged(int current, int previous);
+
+    void resizeEvent(QGraphicsSceneResizeEvent *event) override;
+
+    virtual QPalette::ColorRole normalTextColorRole() const;
+    virtual QPalette::ColorRole normalBaseColorRole() const;
+
+private:
+    void updateCache();
+    void updateSize();
+
+    static QColor mixedColor(const QColor &c1, const QColor &c2, int c1Percent = 50);
+
+    QColor textColor() const;
+    QColor baseColor() const;
 
 private:
+    bool m_dirtyCache;
     QByteArray m_role;
     QVariant m_data;
+    KItemListStyleOption m_styleOption;
+    Qt::Orientation m_scrollOrientation;
+    int m_itemIndex;
 
+    QColor m_separatorColor;
+    QColor m_roleColor;
+    QRectF m_roleBounds;
 };
 #endif
-
-