481 lines
13 KiB
C++
481 lines
13 KiB
C++
#include "timeLineItem.h"
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#include <QPainter>
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namespace TimeLine
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{
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class TimeLineItemPrivate
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{
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public:
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TimeLineItemPrivate();
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QRect m_rect;
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QRect m_titleRect;
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QColor m_lineColor;
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TimeUnit m_curTimeUnit;
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QDateTime m_curTime;
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QDateTime m_leftTime; //当前时间左边第一个需要输出展示的时间点
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int m_curTimePos; //当前时间所在的位置(x值)，默认在中间(=0)
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int m_leftTimePos;
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DisplayState m_curState;
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int m_scaleSize; //时间刻度大小，单位为像素
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int m_scaleFactor; //缩放倍数
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bool m_leftMouseIsDown; //鼠标左键是否按下
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QPointF m_mouseDownPoint; //鼠标左键按下的坐标
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QDateTime m_mouseDownTime; //鼠标左键是按下坐标对应的时间
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};
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TimeLineItemPrivate::TimeLineItemPrivate()
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{
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m_lineColor = Qt::white;
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m_curTimeUnit = TU_Year;
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m_curTime = QDateTime::currentDateTime();
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m_leftTime = m_curTime;
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m_curTimePos = 0;
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m_leftTimePos = 0;
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m_curState = RealTime;
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m_scaleSize = 100;
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m_scaleFactor = 1;
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}
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TimeLineItem::TimeLineItem() :
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d_ptr(new TimeLine::TimeLineItemPrivate)
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{
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}
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TimeLineItem::~TimeLineItem()
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{
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delete d_ptr;
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}
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QRectF TimeLineItem::boundingRect() const
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{
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//return QRectF(-d_ptr->m_rect.width() / 2, -d_ptr->m_rect.height() / 2, d_ptr->m_rect.width(), d_ptr->m_rect.height());
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return d_ptr->m_rect;
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}
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void TimeLineItem::updateBoundingRect(const QRect& r)
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{
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d_ptr->m_rect = QRect(-r.width() / 2, -r.height() / 2, r.width(), r.height());
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d_ptr->m_titleRect = QRect(-r.width() / 2, -r.height() / 2, r.width(), 35);
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d_ptr->m_curTimePos = d_ptr->m_rect.right() - 80;
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}
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void TimeLineItem::paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget)
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{
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Q_UNUSED(widget);
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QRect rect = boundingRect().toRect();
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QPen pen = painter->pen();
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QBrush brush = painter->brush();
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QFont font = painter->font();
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QString strCurState = "";
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//绘制title，包含当前日期显示、状态显示，不同状态对应不同颜色
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if(d_ptr->m_curState == RealTime)
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{
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brush.setColor(QColor(39, 102, 59));
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brush.setStyle(Qt::SolidPattern);
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strCurState = QString::fromWCharArray(L"实时数据");
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}
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else
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{
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brush.setColor(QColor(46, 53, 63));
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brush.setStyle(Qt::SolidPattern);
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strCurState = QString::fromWCharArray(L"历史数据");
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}
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QRect titleRect = d_ptr->m_titleRect;
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painter->setBrush(brush);
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painter->drawRect(titleRect);
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//tiltle中的当前日期
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pen.setColor(d_ptr->m_lineColor);
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font.setFamily(QString::fromWCharArray(L"微软雅黑"));
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font.setPointSize(10);
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font.setBold(true);
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painter->setPen(pen);
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painter->setFont(font);
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QFontMetrics metrics(font);
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QString strCurTime = d_ptr->m_curTime.toString("yyyy-MM-dd");
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QRect textRect = metrics.boundingRect(strCurTime);
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painter->drawText(titleRect.x() + 10, titleRect.y() + (titleRect.height() - textRect.height()) * 0.5 + textRect.height() - 5, strCurTime);
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//tiltle中的当前状态
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textRect = metrics.boundingRect(strCurState);
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painter->drawText(titleRect.x() + (titleRect.width() - textRect.width()) * 0.5, titleRect.y() + (titleRect.height() - textRect.height()) * 0.5 + textRect.height() - 5, strCurState);
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//刻度线
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drawScaleLine(painter);
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//当前时间
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painter->drawLine(d_ptr->m_curTimePos, d_ptr->m_titleRect.bottom() + 2, d_ptr->m_curTimePos, boundingRect().bottom());
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}
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void TimeLineItem::drawScaleLine(QPainter* p)
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{
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QPen pen = p->pen();
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pen.setWidth(2);
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p->setPen(pen);
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QRect rect = boundingRect().toRect();
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d_ptr->m_leftTime = calculateLeftTime();
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d_ptr->m_leftTimePos = calculateLeftTimePos();
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int x_Left = d_ptr->m_leftTimePos;
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int x_Right = x_Left + d_ptr->m_scaleSize;
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while(1)
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{
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if(x_Left < -rect.width() / 2 - 50)
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break;
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p->drawLine(x_Left, d_ptr->m_titleRect.bottom(), x_Left, d_ptr->m_titleRect.bottom() - 5);
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drawTimeText(p, x_Left);
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x_Left -= d_ptr->m_scaleSize;
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}
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while(1)
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{
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if(x_Right > rect.width() / 2 + 50)
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break;
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p->drawLine(x_Right, d_ptr->m_titleRect.bottom(), x_Right, d_ptr->m_titleRect.bottom() - 5);
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drawTimeText(p, x_Right);
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x_Right += d_ptr->m_scaleSize;
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}
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}
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void TimeLineItem::drawTimeText(QPainter* p, int x)
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{
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QDateTime time = calculateTime(x);
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QString text = "";
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QString text1 = "";
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switch(d_ptr->m_curTimeUnit)
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{
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case TU_Year:
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{
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text = time.toString("yyyy");
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break;
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}
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case TU_Month:
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{
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int month = time.date().month();
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if (month == 1)
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text1 = time.toString("yyyy");
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text = time.toString("MM");
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break;
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}
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case TU_Day:
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{
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int day = time.date().day();
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if (day == 1)
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text1 = time.toString("yyyy-MM");
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text = time.toString("dd");
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break;
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}
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case TU_Hour:
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{
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int hour = time.time().hour();
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if (hour == 0)
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text1 = time.toString("MM-dd");
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text = time.toString("hh");
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break;
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}
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case TU_Minute_30:
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case TU_Minute_20:
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case TU_Minute_15:
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case TU_Minute_10:
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case TU_Minute_5:
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case TU_Minute_3:
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case TU_Minute_1:
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{
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int minute = time.time().minute();
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if (minute == 0)
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text1 = time.toString("MM-dd");
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text = time.toString("hh:mm");
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break;
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}
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case TU_Second_30:
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case TU_Second_10:
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case TU_Second_1:
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{
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int second = time.time().second();
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if(second == 0)
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text1 = time.toString("MM-dd");
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text = time.toString("hh:mm:ss");
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break;
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}
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case TU_MSecond_500:
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case TU_MSecond_100:
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case TU_MSecond_50:
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case TU_MSecond_10:
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{
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int msec = time.time().msec();
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if(msec == 0)
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text1 = time.toString("MM-dd");
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text = time.toString("mm:ss:z");
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break;
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}
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default:
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break;
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}
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QFont font = p->font();
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// font.setFamily(QString::fromWCharArray(L"微软雅黑"));
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// font.setPointSize(10);
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// font.setBold(true);
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// p->setFont(font);
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QFontMetrics metrics(font);
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if(!text.isEmpty())
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{
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QRect textRect = metrics.boundingRect(text);
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p->drawText(x - textRect.width() * 0.5, d_ptr->m_titleRect.bottom() + textRect.height(), text);
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}
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if(!text1.isEmpty())
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{
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QRect textRect = metrics.boundingRect(text1);
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p->drawText(x - textRect.width() * 0.5, d_ptr->m_titleRect.bottom() + textRect.height() * 2, text1);
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}
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}
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QDateTime TimeLineItem::calculateLeftTime()
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{
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QDateTime dateTime;
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QString strDateTime = d_ptr->m_curTime.toString("yyyyMMddhhmmssz");
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switch(d_ptr->m_curTimeUnit)
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{
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case TU_Year:
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strDateTime = strDateTime.left(4) + "01010000000";
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break;
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case TU_Month:
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strDateTime = strDateTime.left(6) + "010000000";
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break;
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case TU_Day:
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strDateTime = strDateTime.left(8) + "0000000";
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break;
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case TU_Hour:
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strDateTime = strDateTime.left(10) + "00000";
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break;
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case TU_Minute_30:
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strDateTime = strDateTime.left(12) + "000";
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break;
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case TU_Minute_20:
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strDateTime = strDateTime.left(12) + "000";
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break;
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case TU_Minute_15:
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strDateTime = strDateTime.left(12) + "000";
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break;
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case TU_Minute_10:
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strDateTime = strDateTime.left(12) + "000";
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break;
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case TU_Minute_5:
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strDateTime = strDateTime.left(12) + "000";
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break;
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case TU_Minute_3:
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strDateTime = strDateTime.left(12) + "000";
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break;
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case TU_Minute_1:
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strDateTime = strDateTime.left(12) + "000";
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break;
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case TU_Second_30:
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strDateTime = strDateTime.left(14) + "0";
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break;
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case TU_Second_10:
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strDateTime = strDateTime.left(14) + "0";
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break;
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case TU_Second_1:
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strDateTime = strDateTime.left(14) + "0";
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break;
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case TU_MSecond_500:
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break;
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case TU_MSecond_100:
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break;
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case TU_MSecond_50:
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break;
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case TU_MSecond_10:
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break;
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default:
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break;
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}
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dateTime = QDateTime::fromString(strDateTime, "yyyyMMddhhmmssz");
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return dateTime;
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}
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int TimeLineItem::calculateLeftTimePos()
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{
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qint64 timeRange = d_ptr->m_leftTime.msecsTo(d_ptr->m_curTime);
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qint64 scaleRange = 0;
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switch(d_ptr->m_curTimeUnit)
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{
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case TU_Year:
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scaleRange = 365 * 24 * 60 * 60 * (qint64)1000;
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break;
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case TU_Month:
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scaleRange = 30 * 24 * 60 * 60 * (qint64)1000;
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break;
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case TU_Day:
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scaleRange = 24 * 60 * 60 * 1000;
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break;
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case TU_Hour:
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scaleRange = 60 * 60 *1000;
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break;
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case TU_Minute_30:
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scaleRange = 30 * 60 *1000;
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break;
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case TU_Minute_20:
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scaleRange = 20 * 60 *1000;
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break;
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case TU_Minute_15:
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scaleRange = 15 * 60 *1000;
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break;
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case TU_Minute_10:
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scaleRange = 10 * 60 *1000;
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break;
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case TU_Minute_5:
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scaleRange = 5 * 60 *1000;
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break;
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case TU_Minute_3:
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scaleRange = 3 * 60 *1000;
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break;
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case TU_Minute_1:
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scaleRange = 60 * 1000;
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break;
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case TU_Second_30:
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scaleRange = 30 * 1000;
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break;
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case TU_Second_10:
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scaleRange = 10 * 1000;
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break;
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case TU_Second_1:
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scaleRange = 1 * 1000;
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break;
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case TU_MSecond_500:
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scaleRange = 500;
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break;
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case TU_MSecond_100:
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scaleRange = 100;
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break;
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case TU_MSecond_50:
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scaleRange = 50;
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break;
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case TU_MSecond_10:
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scaleRange = 10;
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break;
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default:
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break;
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}
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//qDebug() << timeRange << ", " << scaleRange;
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double dRatio = (double)timeRange / scaleRange;
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return d_ptr->m_curTimePos + (-d_ptr->m_scaleSize * dRatio);
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}
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QDateTime TimeLineItem::calculateTime(int x)
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{
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if(x == d_ptr->m_curTimePos)
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return d_ptr->m_curTime;
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QDateTime dateTime;
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double dUnit = (double)(x - d_ptr->m_leftTimePos) / (double)d_ptr->m_scaleSize;
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switch(d_ptr->m_curTimeUnit)
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{
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case TU_Year:
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dateTime = d_ptr->m_leftTime.addYears((int)dUnit);//先计算年份
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dateTime = dateTime.addMSecs(dateTime.date().daysInYear() * 24 * 60 * 60 * 1000 * (dUnit - (int)dUnit)); //再计算时间
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break;
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case TU_Month:
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dateTime = d_ptr->m_leftTime.addMonths((int)dUnit);//先计算月份
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dateTime = dateTime.addMSecs(dateTime.date().daysInMonth() * 24 * 60 * 60 * 1000 * (dUnit - (int)dUnit)); //再计算时间
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break;
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case TU_Day:
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dateTime = d_ptr->m_leftTime.addMSecs(24 * 60 * 60 * 1000 * dUnit);
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break;
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case TU_Hour:
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dateTime = d_ptr->m_leftTime.addMSecs(60 * 60 * 1000 * dUnit);
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break;
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case TU_Minute_30:
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dateTime = d_ptr->m_leftTime.addMSecs(30 * 60 * 1000 * dUnit);
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break;
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case TU_Minute_20:
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dateTime = d_ptr->m_leftTime.addMSecs(20 * 60 * 1000 * dUnit);
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break;
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case TU_Minute_15:
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dateTime = d_ptr->m_leftTime.addMSecs(15 * 60 * 1000 * dUnit);
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break;
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case TU_Minute_10:
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dateTime = d_ptr->m_leftTime.addMSecs(10 * 60 * 1000 * dUnit);
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break;
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case TU_Minute_5:
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dateTime = d_ptr->m_leftTime.addMSecs(5 * 60 * 1000 * dUnit);
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break;
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case TU_Minute_3:
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dateTime = d_ptr->m_leftTime.addMSecs(3 * 60 * 1000 * dUnit);
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break;
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case TU_Minute_1:
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dateTime = d_ptr->m_leftTime.addMSecs(60 * 1000 * dUnit);
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break;
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case TU_Second_30:
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dateTime = d_ptr->m_leftTime.addMSecs(30 * 1000 * dUnit);
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break;
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case TU_Second_10:
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dateTime = d_ptr->m_leftTime.addMSecs(10 * 1000 * dUnit);
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break;
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case TU_Second_1:
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dateTime = d_ptr->m_leftTime.addMSecs(1000 * dUnit);
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break;
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case TU_MSecond_500:
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dateTime = d_ptr->m_leftTime.addMSecs(500 * dUnit);
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break;
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case TU_MSecond_100:
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dateTime = d_ptr->m_leftTime.addMSecs(100 * dUnit);
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break;
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case TU_MSecond_50:
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dateTime = d_ptr->m_leftTime.addMSecs(50 * dUnit);
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break;
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case TU_MSecond_10:
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dateTime = d_ptr->m_leftTime.addMSecs(10 * dUnit);
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break;
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default:
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break;
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}
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return dateTime;
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}
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void TimeLineItem::setLineColor(QColor color)
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{
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d_ptr->m_lineColor = color;
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}
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void TimeLineItem::setScaleSize(int size)
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{
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d_ptr->m_scaleSize = size;
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}
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void TimeLineItem::setState(DisplayState state)
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{
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d_ptr->m_curState = state;
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}
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void TimeLineItem::setTime(QDateTime time)
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{
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if(time > QDateTime::currentDateTime())
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return;
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d_ptr->m_curTime = time;
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}
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void TimeLineItem::zoomIn()
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{
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d_ptr->m_scaleFactor++;
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if(d_ptr->m_scaleFactor > (int)TU_MSecond_10)
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d_ptr->m_scaleFactor = (int)TU_MSecond_10;
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d_ptr->m_curTimeUnit = (TimeUnit)d_ptr->m_scaleFactor;
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prepareGeometryChange();
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//qDebug() << d_ptr->m_curTimeUnit;
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}
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void TimeLineItem::zoomOut()
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{
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d_ptr->m_scaleFactor--;
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if(d_ptr->m_scaleFactor < 1)
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d_ptr->m_scaleFactor = 1;
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d_ptr->m_curTimeUnit = (TimeUnit)d_ptr->m_scaleFactor;
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prepareGeometryChange();
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//qDebug() << d_ptr->m_curTimeUnit;
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}
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} // namespace TimeLine
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