| 1 | // Copyright (C) 2023 The Qt Company Ltd. |
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| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only |
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| 3 | |
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| 4 | #include "qcategory3daxis_p.h" |
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| 5 | #include "qquickgraphsitem_p.h" |
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| 6 | |
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| 7 | QT_BEGIN_NAMESPACE |
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| 8 | |
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| 9 | /*! |
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| 10 | * \class QCategory3DAxis |
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| 11 | * \inmodule QtGraphs |
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| 12 | * \ingroup graphs_3D |
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| 13 | * \brief The QCategory3DAxis class manipulates an axis of a graph. |
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| 14 | * |
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| 15 | * QCategory3DAxis provides an axis that can be given labels. The axis is |
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| 16 | * divided into equal-sized categories based on the data window size defined by |
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| 17 | * setting the axis range. |
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| 18 | * |
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| 19 | * Grid lines are drawn between categories, if visible. Labels are drawn to |
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| 20 | * positions of categories if provided. |
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| 21 | */ |
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| 22 | |
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| 23 | /*! |
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| 24 | * \qmltype Category3DAxis |
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| 25 | * \inqmlmodule QtGraphs |
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| 26 | * \ingroup graphs_qml_3D |
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| 27 | * \nativetype QCategory3DAxis |
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| 28 | * \inherits Abstract3DAxis |
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| 29 | * \brief Manipulates an axis of a graph. |
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| 30 | * |
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| 31 | * This type provides an axis that can be given labels. |
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| 32 | */ |
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| 33 | |
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| 34 | /*! |
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| 35 | * \qmlproperty list Category3DAxis::labels |
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| 36 | * |
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| 37 | * The labels for the axis are applied to categories. If there are fewer labels |
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| 38 | * than categories, the remaining ones do not have a label. If category labels |
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| 39 | * are not defined explicitly, labels are generated from the data row (or column) |
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| 40 | * labels of the primary series of the graph. |
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| 41 | */ |
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| 42 | |
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| 43 | /*! |
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| 44 | * \qmlsignal Category3DAxis::rowLabelsChanged() |
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| 45 | * |
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| 46 | * This signal is emitted when row \l labels change. |
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| 47 | */ |
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| 48 | /*! |
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| 49 | * \qmlsignal Category3DAxis::columnLabelsChanged() |
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| 50 | * |
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| 51 | * This signal is emitted when column \l labels change. |
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| 52 | */ |
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| 53 | |
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| 54 | /*! |
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| 55 | * Constructs a category 3D axis with the parent \a parent. |
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| 56 | */ |
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| 57 | QCategory3DAxis::QCategory3DAxis(QObject *parent) |
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| 58 | : QAbstract3DAxis(*(new QCategory3DAxisPrivate()), parent) |
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| 59 | {} |
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| 60 | |
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| 61 | /*! |
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| 62 | * Destroys the category 3D axis. |
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| 63 | */ |
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| 64 | QCategory3DAxis::~QCategory3DAxis() {} |
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| 65 | |
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| 66 | /*! |
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| 67 | * \property QCategory3DAxis::labels |
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| 68 | * |
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| 69 | * \brief The labels for the axis applied to categories. |
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| 70 | * |
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| 71 | * If there are fewer labels than categories, the |
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| 72 | * remaining ones do not have a label. If category labels are not defined |
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| 73 | * explicitly, labels are generated from the data row (or column) labels of the |
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| 74 | * primary series of the graph. |
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| 75 | */ |
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| 76 | QStringList QCategory3DAxis::labels() const |
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| 77 | { |
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| 78 | return QAbstract3DAxis::labels(); |
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| 79 | } |
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| 80 | |
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| 81 | void QCategory3DAxis::setLabels(const QStringList &labels) |
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| 82 | { |
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| 83 | Q_D(QCategory3DAxis); |
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| 84 | d->m_labelsExplicitlySet = !labels.isEmpty(); |
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| 85 | bool labelsFromData = false; |
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| 86 | |
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| 87 | // Get labels from data proxy if axis is attached to a bar graph and an active |
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| 88 | // axis there |
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| 89 | if (labels.isEmpty()) { |
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| 90 | QQuickGraphsItem *graph = qobject_cast<QQuickGraphsItem *>(object: parent()); |
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| 91 | // TODO: QCategory3DAxis is only used with QBars3D, so is it still necessary to check if |
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| 92 | // the item is bars or something else? |
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| 93 | if (graph) { |
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| 94 | if (graph->axisX() == this) { |
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| 95 | emit rowLabelsChanged(); |
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| 96 | labelsFromData = true; |
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| 97 | } else if (graph->axisZ() == this) { |
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| 98 | emit columnLabelsChanged(); |
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| 99 | labelsFromData = true; |
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| 100 | } |
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| 101 | } |
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| 102 | } |
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| 103 | |
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| 104 | if (!labelsFromData && d->m_labels != labels) { |
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| 105 | d->m_labels = labels; |
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| 106 | emit QAbstract3DAxis::labelsChanged(); |
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| 107 | } |
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| 108 | } |
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| 109 | |
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| 110 | /*! |
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| 111 | * \internal |
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| 112 | */ |
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| 113 | QCategory3DAxisPrivate::QCategory3DAxisPrivate() |
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| 114 | : QAbstract3DAxisPrivate(QAbstract3DAxis::AxisType::Category) |
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| 115 | , m_labelsExplicitlySet(false) |
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| 116 | {} |
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| 117 | |
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| 118 | QCategory3DAxisPrivate::~QCategory3DAxisPrivate() {} |
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| 119 | |
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| 120 | /*! |
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| 121 | * \internal |
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| 122 | * The graph uses this function to set labels from the data proxy as category |
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| 123 | * labels. |
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| 124 | * If the labels have been set explicitly by the user, data proxy labels |
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| 125 | * are not used. |
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| 126 | */ |
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| 127 | void QCategory3DAxisPrivate::setDataLabels(const QStringList &labels) |
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| 128 | { |
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| 129 | Q_Q(QCategory3DAxis); |
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| 130 | if (!m_labelsExplicitlySet && m_labels != labels) { |
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| 131 | m_labels = labels; |
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| 132 | emit q->QAbstract3DAxis::labelsChanged(); |
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| 133 | } |
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| 134 | } |
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| 135 | |
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| 136 | bool QCategory3DAxisPrivate::allowZero() |
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| 137 | { |
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| 138 | return true; |
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| 139 | } |
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| 140 | |
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| 141 | bool QCategory3DAxisPrivate::allowNegatives() |
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| 142 | { |
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| 143 | return false; |
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| 144 | } |
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| 145 | |
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| 146 | bool QCategory3DAxisPrivate::allowMinMaxSame() |
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| 147 | { |
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| 148 | return true; |
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| 149 | } |
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| 150 | |
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| 151 | QT_END_NAMESPACE |
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| 152 | |
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