| 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 | #ifndef BARSRENDERER_H |
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| 5 | #define BARSRENDERER_H |
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| 6 | |
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| 7 | // |
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| 8 | // W A R N I N G |
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| 9 | // ------------- |
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| 10 | // |
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| 11 | // This file is not part of the QtGraphs API. It exists purely as an |
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| 12 | // implementation detail. This header file may change from version to |
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| 13 | // version without notice, or even be removed. |
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| 14 | // |
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| 15 | // We mean it. |
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| 16 | |
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| 17 | #include <QQuickItem> |
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| 18 | #include <QtQuick/private/qquicktext_p.h> |
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| 19 | #include <QtCore/QHash> |
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| 20 | #include <QtCore/QList> |
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| 21 | #include <QtCore/QRectF> |
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| 22 | #include <QtGui/QColor> |
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| 23 | |
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| 24 | QT_BEGIN_NAMESPACE |
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| 25 | |
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| 26 | class QGraphsView; |
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| 27 | class QBarSeries; |
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| 28 | class QBarSet; |
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| 29 | class QAbstractSeries; |
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| 30 | |
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| 31 | class BarsRenderer : public QQuickItem |
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| 32 | { |
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| 33 | Q_OBJECT |
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| 34 | public: |
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| 35 | BarsRenderer(QGraphsView *graph); |
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| 36 | ~BarsRenderer() override; |
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| 37 | |
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| 38 | void handlePolish(QBarSeries *series); |
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| 39 | void updateSeries(QBarSeries *series); |
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| 40 | void afterUpdate(QList<QAbstractSeries *> &cleanupSeries); |
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| 41 | void afterPolish(QList<QAbstractSeries *> &cleanupSeries); |
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| 42 | bool handleMousePress(QMouseEvent *event); |
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| 43 | bool handleHoverMove(QHoverEvent *event); |
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| 44 | |
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| 45 | Q_SIGNALS: |
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| 46 | |
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| 47 | private: |
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| 48 | struct BarSelectionRect { |
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| 49 | QBarSeries *series = nullptr; |
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| 50 | QBarSet *barSet = nullptr; |
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| 51 | QList<QRectF> rects; |
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| 52 | }; |
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| 53 | struct BarSeriesData { |
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| 54 | QRectF rect; |
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| 55 | QColor color; |
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| 56 | QColor borderColor; |
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| 57 | QString label; |
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| 58 | QColor labelColor; |
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| 59 | float value; |
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| 60 | float borderWidth; |
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| 61 | bool isSelected; |
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| 62 | }; |
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| 63 | |
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| 64 | void updateVerticalBars(QBarSeries *series, qsizetype setCount, qsizetype valuesPerSet); |
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| 65 | void updateHorizontalBars(QBarSeries *series, qsizetype setCount, qsizetype valuesPerSet); |
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| 66 | QColor getSetColor(QBarSeries *series, QBarSet *set, qsizetype barSerieIndex); |
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| 67 | QColor getSetSelectedColor(QBarSeries *series, QBarSet *set); |
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| 68 | QColor getSetBorderColor(QBarSeries *series, QBarSet *set, qsizetype barSerieIndex); |
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| 69 | qreal getSetBorderWidth(QBarSeries *series, QBarSet *set); |
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| 70 | QString generateLabelText(QBarSeries *series, qreal value); |
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| 71 | void positionLabelItem(QBarSeries *series, QQuickText *textItem, const BarSeriesData &d); |
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| 72 | void updateComponents(QBarSeries *series); |
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| 73 | void updateValueLabels(QBarSeries *series); |
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| 74 | |
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| 75 | QGraphsView *m_graph = nullptr; |
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| 76 | QHash<QBarSeries *, QList<BarSelectionRect>> m_rectNodesInputRects; |
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| 77 | QHash<QBarSeries *, QList<QQuickItem *>> m_barItems; |
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| 78 | QHash<QBarSeries *, QList<QQuickText *>> m_labelTextItems; |
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| 79 | QHash<QBarSeries *, QList<BarSeriesData>> m_seriesData; |
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| 80 | |
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| 81 | QBarSeries *m_currentHoverSeries = nullptr; |
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| 82 | qsizetype m_colorIndex = -1; |
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| 83 | // Margin between bars. |
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| 84 | float m_barMargin = 2.0; |
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| 85 | }; |
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| 86 | |
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| 87 | QT_END_NAMESPACE |
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| 88 | |
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| 89 | #endif // BARSRENDERER_H |
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| 90 | |
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