1/****************************************************************************
2**
3** Copyright (C) 2016 The Qt Company Ltd.
4** Contact: https://www.qt.io/licensing/
5**
6** This file is part of the Qt Data Visualization module of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:GPL$
9** Commercial License Usage
10** Licensees holding valid commercial Qt licenses may use this file in
11** accordance with the commercial license agreement provided with the
12** Software or, alternatively, in accordance with the terms contained in
13** a written agreement between you and The Qt Company. For licensing terms
14** and conditions see https://www.qt.io/terms-conditions. For further
15** information use the contact form at https://www.qt.io/contact-us.
16**
17** GNU General Public License Usage
18** Alternatively, this file may be used under the terms of the GNU
19** General Public License version 3 or (at your option) any later version
20** approved by the KDE Free Qt Foundation. The licenses are as published by
21** the Free Software Foundation and appearing in the file LICENSE.GPL3
22** included in the packaging of this file. Please review the following
23** information to ensure the GNU General Public License requirements will
24** be met: https://www.gnu.org/licenses/gpl-3.0.html.
25**
26** $QT_END_LICENSE$
27**
28****************************************************************************/
29
30//
31// W A R N I N G
32// -------------
33//
34// This file is not part of the QtDataVisualization API. It exists purely as an
35// implementation detail. This header file may change from version to
36// version without notice, or even be removed.
37//
38// We mean it.
39
40#ifndef AXISRENDERCACHE_P_H
41#define AXISRENDERCACHE_P_H
42
43#include "datavisualizationglobal_p.h"
44#include "drawer_p.h"
45#include <QtCore/QPointer>
46
47QT_BEGIN_NAMESPACE_DATAVISUALIZATION
48
49class AxisRenderCache : public QObject
50{
51 Q_OBJECT
52public:
53 AxisRenderCache();
54 virtual ~AxisRenderCache();
55
56 void setDrawer(Drawer *drawer);
57
58 void setType(QAbstract3DAxis::AxisType type);
59 inline QAbstract3DAxis::AxisType type() const { return m_type; }
60 void setTitle(const QString &title);
61 inline const QString &title() const { return m_title; }
62 void setLabels(const QStringList &labels);
63 inline const QStringList &labels() const { return m_labels; }
64 inline void setMin(float min) { m_min = min; }
65 inline float min() const { return m_min; }
66 inline void setMax(float max) { m_max = max; }
67 inline float max() const { return m_max; }
68 inline void setSegmentCount(int count) { m_segmentCount = count; m_positionsDirty = true; }
69 inline int segmentCount() const { return m_segmentCount; }
70 inline void setSubSegmentCount(int count) { m_subSegmentCount = count; m_positionsDirty = true; }
71 inline int subSegmentCount() const { return m_subSegmentCount; }
72 inline void setLabelFormat(const QString &format) { m_labelFormat = format; }
73 inline const QString &labelFormat() const { return m_labelFormat; }
74 inline void setReversed(bool enable) { m_reversed = enable; m_positionsDirty = true; }
75 inline bool reversed() const { return m_reversed; }
76 inline void setFormatter(QValue3DAxisFormatter *formatter)
77 {
78 m_formatter = formatter; m_positionsDirty = true;
79 }
80 inline QValue3DAxisFormatter *formatter() const { return m_formatter; }
81 inline void setCtrlFormatter(QValue3DAxisFormatter *formatter)
82 {
83 m_ctrlFormatter = formatter;
84 }
85 inline QValue3DAxisFormatter *ctrlFormatter() const { return m_ctrlFormatter; }
86
87 inline LabelItem &titleItem() { return m_titleItem; }
88 inline QList<LabelItem *> &labelItems() { return m_labelItems; }
89 inline float gridLinePosition(int index) { return m_adjustedGridLinePositions.at(i: index); }
90 inline int gridLineCount() { return m_adjustedGridLinePositions.size(); }
91 inline float labelPosition(int index) { return m_adjustedLabelPositions.at(i: index); }
92 inline int labelCount() {
93 // Some value axis formatters may opt to not show all labels,
94 // so use positions array for determining count in that case.
95 if (m_type == QAbstract3DAxis::AxisTypeValue)
96 return m_adjustedLabelPositions.size();
97 else
98 return m_labels.size();
99 }
100 void updateAllPositions();
101 inline bool positionsDirty() const { return m_positionsDirty; }
102 inline void markPositionsDirty() { m_positionsDirty = true; }
103 inline void setTranslate(float translate) { m_translate = translate; m_positionsDirty = true; }
104 inline float translate() { return m_translate; }
105 inline void setScale(float scale) { m_scale = scale; m_positionsDirty = true; }
106 inline float scale() { return m_scale; }
107 inline float positionAt(float value)
108 {
109 if (m_reversed)
110 return (1.0f - m_formatter->positionAt(value)) * m_scale + m_translate;
111 else
112 return m_formatter->positionAt(value) * m_scale + m_translate;
113 }
114 inline float labelAutoRotation() const { return m_labelAutoRotation; }
115 inline void setLabelAutoRotation(float angle) { m_labelAutoRotation = angle; }
116 inline bool isTitleVisible() const { return m_titleVisible; }
117 inline void setTitleVisible(bool visible) { m_titleVisible = visible; }
118 inline bool isTitleFixed() const { return m_titleFixed; }
119 inline void setTitleFixed(bool fixed) { m_titleFixed = fixed; }
120
121 void updateTextures();
122 void clearLabels();
123
124private:
125 int maxLabelWidth(const QStringList &labels) const;
126
127 // Cached axis values
128 QAbstract3DAxis::AxisType m_type;
129 QString m_title;
130 QStringList m_labels;
131 float m_min;
132 float m_max;
133 int m_segmentCount;
134 int m_subSegmentCount;
135 QString m_labelFormat;
136 bool m_reversed;
137 QFont m_font;
138 QValue3DAxisFormatter *m_formatter;
139 QPointer<QValue3DAxisFormatter> m_ctrlFormatter;
140
141 // Renderer items
142 Drawer *m_drawer; // Not owned
143 LabelItem m_titleItem;
144 QList<LabelItem *> m_labelItems;
145 QVector<float> m_adjustedGridLinePositions;
146 QVector<float> m_adjustedLabelPositions;
147 bool m_positionsDirty;
148 float m_translate;
149 float m_scale;
150 float m_labelAutoRotation;
151 bool m_titleVisible;
152 bool m_titleFixed;
153
154 Q_DISABLE_COPY(AxisRenderCache)
155};
156
157QT_END_NAMESPACE_DATAVISUALIZATION
158
159#endif
160

source code of qtdatavis3d/src/datavisualization/engine/axisrendercache_p.h