File indexing completed on 2024-04-21 15:02:53
0001 /* 0002 * SPDX-FileCopyrightText: 2020 Arjen Hiemstra <ahiemstra@heimr.nl> 0003 * 0004 * SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL 0005 */ 0006 0007 #ifndef LEGENDLAYOUT_H 0008 #define LEGENDLAYOUT_H 0009 0010 #include <QQuickItem> 0011 0012 class LegendLayoutAttached : public QObject 0013 { 0014 Q_OBJECT 0015 Q_PROPERTY(qreal minimumWidth READ minimumWidth WRITE setMinimumWidth NOTIFY minimumWidthChanged) 0016 Q_PROPERTY(qreal preferredWidth READ preferredWidth WRITE setPreferredWidth NOTIFY preferredWidthChanged) 0017 Q_PROPERTY(qreal maximumWidth READ maximumWidth WRITE setMaximumWidth NOTIFY maximumWidthChanged) 0018 0019 public: 0020 explicit LegendLayoutAttached(QObject *parent = nullptr); 0021 0022 qreal minimumWidth() const; 0023 void setMinimumWidth(qreal newMinimumWidth); 0024 Q_SIGNAL void minimumWidthChanged(); 0025 0026 qreal preferredWidth() const; 0027 void setPreferredWidth(qreal newPreferredWidth); 0028 Q_SIGNAL void preferredWidthChanged(); 0029 0030 qreal maximumWidth() const; 0031 void setMaximumWidth(qreal newMaximumWidth); 0032 Q_SIGNAL void maximumWidthChanged(); 0033 0034 private: 0035 qreal m_minimumWidth = -1.0; 0036 qreal m_preferredWidth = -1.0; 0037 qreal m_maximumWidth = -1.0; 0038 }; 0039 0040 class LegendLayout : public QQuickItem 0041 { 0042 Q_OBJECT 0043 Q_PROPERTY(qreal horizontalSpacing READ horizontalSpacing WRITE setHorizontalSpacing NOTIFY horizontalSpacingChanged) 0044 Q_PROPERTY(qreal verticalSpacing READ verticalSpacing WRITE setVerticalSpacing NOTIFY verticalSpacingChanged) 0045 Q_PROPERTY(qreal preferredWidth READ preferredWidth NOTIFY preferredWidthChanged) 0046 0047 public: 0048 explicit LegendLayout(QQuickItem *parent = nullptr); 0049 0050 qreal horizontalSpacing() const; 0051 void setHorizontalSpacing(qreal newHorizontalSpacing); 0052 Q_SIGNAL void horizontalSpacingChanged(); 0053 0054 qreal verticalSpacing() const; 0055 void setVerticalSpacing(qreal newVerticalSpacing); 0056 Q_SIGNAL void verticalSpacingChanged(); 0057 0058 qreal preferredWidth() const; 0059 Q_SIGNAL void preferredWidthChanged(); 0060 0061 static LegendLayoutAttached *qmlAttachedProperties(QObject *object) 0062 { 0063 return new LegendLayoutAttached(object); 0064 } 0065 0066 protected: 0067 void componentComplete() override; 0068 void updatePolish() override; 0069 #if QT_VERSION < QT_VERSION_CHECK(6, 0, 0) 0070 void geometryChanged(const QRectF &newGeometry, const QRectF &oldGeometry) override; 0071 #else 0072 void geometryChange(const QRectF &newGeometry, const QRectF &oldGeometry) override; 0073 #endif 0074 void itemChange(QQuickItem::ItemChange change, const QQuickItem::ItemChangeData &data) override; 0075 0076 private: 0077 void updateItem(int index, QQuickItem *item); 0078 std::tuple<int, int, qreal, qreal> determineColumns(); 0079 0080 qreal m_horizontalSpacing = 0.0; 0081 qreal m_verticalSpacing = 0.0; 0082 qreal m_preferredWidth = 0.0; 0083 0084 bool m_completed = false; 0085 }; 0086 0087 QML_DECLARE_TYPEINFO(LegendLayout, QML_HAS_ATTACHED_PROPERTIES) 0088 0089 #endif // LEGENDLAYOUT_H