KItemListViewLayouter: handle grid view layouts in RtL properly

[dolphin.git] / src / kitemviews / private / kitemlistheaderwidget.h

diff --git a/src/kitemviews/private/kitemlistheaderwidget.h b/src/kitemviews/private/kitemlistheaderwidget.h
index 74c9ac5182c1fb2d68532cdf6453310505187793..58f0dc98ee4ed24f3f240d44bdc06f9795d45fdb 100644 (file)
--- a/src/kitemviews/private/kitemlistheaderwidget.h
+++ b/src/kitemviews/private/kitemlistheaderwidget.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 KITEMLISTHEADERWIDGET_H
 #define KITEMLISTHEADERWIDGET_H
 
-#include "libdolphin_export.h"
+#include "dolphin_export.h"
+
 #include <QGraphicsWidget>
 #include <QHash>
 #include <QList>
@@ -33,13 +21,13 @@ class KItemModelBase;
  * The widget is an internal API, the user of KItemListView may only access the
  * class KItemListHeader.
  */
-class LIBDOLPHINPRIVATE_EXPORT KItemListHeaderWidget : public QGraphicsWidget
+class DOLPHIN_EXPORT KItemListHeaderWidget : public QGraphicsWidget
 {
     Q_OBJECT
 
 public:
-    KItemListHeaderWidget(QGraphicsWidget* parent = 0);
-    virtual ~KItemListHeaderWidget();
+    explicit KItemListHeaderWidget(QGraphicsWidget* parent = nullptr);
+    ~KItemListHeaderWidget() override;
 
     void setModel(KItemModelBase* model);
     KItemModelBase* model() const;
@@ -62,11 +50,14 @@ public:
     void setOffset(qreal offset);
     qreal offset() const;
 
+    void setLeadingPadding(qreal width);
+    qreal leadingPadding() const;
+
     qreal minimumColumnWidth() const;
 
-    virtual void paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget = 0);
+    void paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget = nullptr) override;
 
-signals:
+Q_SIGNALS:
     /**
      * Is emitted if the width of a visible role has been adjusted by the user with the mouse
      * (no signal is emitted if KItemListHeader::setVisibleRoleWidth() is invoked).
@@ -75,6 +66,15 @@ signals:
                             qreal currentWidth,
                             qreal previousWidth);
 
+    void leadingPaddingChanged(qreal width);
+
+    /**
+     * Is emitted if the user has released the mouse button after adjusting the
+     * width of a visible role.
+     */
+    void columnWidthChangeFinished(const QByteArray& role,
+                                   qreal currentWidth);
+
     /**
      * Is emitted if the position of the column has been changed.
      */
@@ -97,29 +97,37 @@ signals:
     void sortRoleChanged(const QByteArray& current, const QByteArray& previous);
 
 protected:
-    virtual void mousePressEvent(QGraphicsSceneMouseEvent* event);
-    virtual void mouseReleaseEvent(QGraphicsSceneMouseEvent* event);
-    virtual void mouseMoveEvent(QGraphicsSceneMouseEvent* event);
-    virtual void mouseDoubleClickEvent(QGraphicsSceneMouseEvent* event);
-    virtual void hoverEnterEvent(QGraphicsSceneHoverEvent* event);
-    virtual void hoverLeaveEvent(QGraphicsSceneHoverEvent* event);
-    virtual void hoverMoveEvent(QGraphicsSceneHoverEvent* event);
-
-private slots:
+    void mousePressEvent(QGraphicsSceneMouseEvent* event) override;
+    void mouseReleaseEvent(QGraphicsSceneMouseEvent* event) override;
+    void mouseMoveEvent(QGraphicsSceneMouseEvent* event) override;
+    void mouseDoubleClickEvent(QGraphicsSceneMouseEvent* event) override;
+    void hoverEnterEvent(QGraphicsSceneHoverEvent* event) override;
+    void hoverLeaveEvent(QGraphicsSceneHoverEvent* event) override;
+    void hoverMoveEvent(QGraphicsSceneHoverEvent* event) override;
+
+private Q_SLOTS:
     void slotSortRoleChanged(const QByteArray& current, const QByteArray& previous);
     void slotSortOrderChanged(Qt::SortOrder current, Qt::SortOrder previous);
 
 private:
+
+    enum PaddingGrip
+    {
+        Leading,
+        Trailing,
+    };
+
     void paintRole(QPainter* painter,
                    const QByteArray& role,
                    const QRectF& rect,
                    int orderIndex,
-                   QWidget* widget = 0) const;
+                   QWidget* widget = nullptr) const;
 
     void updatePressedRoleIndex(const QPointF& pos);
     void updateHoveredRoleIndex(const QPointF& pos);
     int roleIndexAt(const QPointF& pos) const;
     bool isAboveRoleGrip(const QPointF& pos, int roleIndex) const;
+    bool isAbovePaddingGrip(const QPointF& pos, PaddingGrip paddingGrip) const;
 
     /**
      * Creates a pixmap of the role with the index \a roleIndex that is shown
@@ -143,12 +151,14 @@ private:
     {
         NoRoleOperation,
         ResizeRoleOperation,
+        ResizeLeadingColumnOperation,
         MoveRoleOperation
     };
 
     bool m_automaticColumnResizing;
     KItemModelBase* m_model;
     qreal m_offset;
+    qreal m_leadingPadding;
     QList<QByteArray> m_columns;
     QHash<QByteArray, qreal> m_columnWidths;
     QHash<QByteArray, qreal> m_preferredColumnWidths;