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Clone from http://code.qt.io/qt/qtcharts.git

Adds isEmpty to domain
Michal Klocek -
r388:5bb469f288f8
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@@ -1,64 +1,69
1 #include "domain_p.h"
1 #include "domain_p.h"
2
2
3 QTCOMMERCIALCHART_BEGIN_NAMESPACE
3 QTCOMMERCIALCHART_BEGIN_NAMESPACE
4
4
5 Domain::Domain(qreal minX, qreal maxX, qreal minY, qreal maxY):
5 Domain::Domain(qreal minX, qreal maxX, qreal minY, qreal maxY):
6 m_minX(minX),
6 m_minX(minX),
7 m_maxX(maxX),
7 m_maxX(maxX),
8 m_minY(minY),
8 m_minY(minY),
9 m_maxY(maxY)
9 m_maxY(maxY)
10 {
10 {
11 }
11 }
12
12
13 Domain::~Domain()
13 Domain::~Domain()
14 {
14 {
15 }
15 }
16
16
17 qreal Domain::spanX() const
17 qreal Domain::spanX() const
18 {
18 {
19 Q_ASSERT(m_maxX >= m_minX);
19 Q_ASSERT(m_maxX >= m_minX);
20 return m_maxX - m_minX;
20 return m_maxX - m_minX;
21 }
21 }
22
22
23 qreal Domain::spanY() const
23 qreal Domain::spanY() const
24 {
24 {
25 Q_ASSERT(m_maxY >= m_minY);
25 Q_ASSERT(m_maxY >= m_minY);
26 return m_maxY - m_minY;
26 return m_maxY - m_minY;
27 }
27 }
28
28
29 bool Domain::isEmpty() const
30 {
31 return spanX()==0 || spanY()==0;
32 }
33
29 Domain Domain::subDomain(const QRectF& rect, qreal maxWidth,qreal maxHeight) const
34 Domain Domain::subDomain(const QRectF& rect, qreal maxWidth,qreal maxHeight) const
30 {
35 {
31 Domain domain;
36 Domain domain;
32
37
33 qreal dx = spanX() / maxWidth;
38 qreal dx = spanX() / maxWidth;
34 qreal dy = spanY() / maxHeight;
39 qreal dy = spanY() / maxHeight;
35
40
36 domain.m_minX = m_minX + dx * rect.left();
41 domain.m_minX = m_minX + dx * rect.left();
37 domain.m_maxX = m_minX + dx * rect.right();
42 domain.m_maxX = m_minX + dx * rect.right();
38 domain.m_minY = m_maxY - dy * rect.bottom();
43 domain.m_minY = m_maxY - dy * rect.bottom();
39 domain.m_maxY = m_maxY - dy * rect.top();
44 domain.m_maxY = m_maxY - dy * rect.top();
40
45
41 return domain;
46 return domain;
42 }
47 }
43
48
44 bool operator== (const Domain &domain1, const Domain &domain2)
49 bool operator== (const Domain &domain1, const Domain &domain2)
45 {
50 {
46 return (domain1.m_maxX == domain2.m_maxX &&
51 return (domain1.m_maxX == domain2.m_maxX &&
47 domain1.m_maxY == domain2.m_maxY &&
52 domain1.m_maxY == domain2.m_maxY &&
48 domain1.m_minX == domain2.m_minX &&
53 domain1.m_minX == domain2.m_minX &&
49 domain1.m_minY == domain2.m_minY);
54 domain1.m_minY == domain2.m_minY);
50 }
55 }
51
56
52 bool operator!= (const Domain &domain1, const Domain &domain2)
57 bool operator!= (const Domain &domain1, const Domain &domain2)
53 {
58 {
54 return !(domain1 == domain2);
59 return !(domain1 == domain2);
55 }
60 }
56
61
57
62
58 QDebug operator<<(QDebug dbg, const Domain &domain)
63 QDebug operator<<(QDebug dbg, const Domain &domain)
59 {
64 {
60 dbg.nospace() << "Domain("<<domain.m_minX<<','<<domain.m_maxX<<','<<domain.m_minY<<','<<domain.m_maxY<<')';
65 dbg.nospace() << "Domain("<<domain.m_minX<<','<<domain.m_maxX<<','<<domain.m_minY<<','<<domain.m_maxY<<')';
61 return dbg.maybeSpace();
66 return dbg.maybeSpace();
62 }
67 }
63
68
64 QTCOMMERCIALCHART_END_NAMESPACE
69 QTCOMMERCIALCHART_END_NAMESPACE
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@@ -1,31 +1,32
1 #ifndef DOMAIN_H_
1 #ifndef DOMAIN_H_
2 #define DOMAIN_H_
2 #define DOMAIN_H_
3 #include "qchartglobal.h"
3 #include "qchartglobal.h"
4 #include <QRect>
4 #include <QRect>
5
5
6 QTCOMMERCIALCHART_BEGIN_NAMESPACE
6 QTCOMMERCIALCHART_BEGIN_NAMESPACE
7
7
8 class Domain {
8 class Domain {
9 public:
9 public:
10 Domain(qreal minX=0, qreal maxX=0, qreal minY=0, qreal maxY=0);
10 Domain(qreal minX=0, qreal maxX=0, qreal minY=0, qreal maxY=0);
11 virtual ~Domain();
11 virtual ~Domain();
12
12
13 qreal spanX() const;
13 qreal spanX() const;
14 qreal spanY() const;
14 qreal spanY() const;
15 bool isEmpty() const;
15
16
16 friend bool operator== (const Domain &domain1, const Domain &domain2);
17 friend bool operator== (const Domain &domain1, const Domain &domain2);
17 friend bool operator!= (const Domain &domain1, const Domain &domain2);
18 friend bool operator!= (const Domain &domain1, const Domain &domain2);
18 friend QDebug operator<<(QDebug dbg, const Domain &domain);
19 friend QDebug operator<<(QDebug dbg, const Domain &domain);
19
20
20 Domain subDomain(const QRectF& rect, qreal maxWidth, qreal maxHeight) const;
21 Domain subDomain(const QRectF& rect, qreal maxWidth, qreal maxHeight) const;
21
22
22 public:
23 public:
23 qreal m_minX;
24 qreal m_minX;
24 qreal m_maxX;
25 qreal m_maxX;
25 qreal m_minY;
26 qreal m_minY;
26 qreal m_maxY;
27 qreal m_maxY;
27 };
28 };
28
29
29 QTCOMMERCIALCHART_END_NAMESPACE
30 QTCOMMERCIALCHART_END_NAMESPACE
30
31
31 #endif
32 #endif
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