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