#include?“mytracer.h“

myTracer::myTracer（QCustomPlot?*_plot?QCPGraph?*_graph?TracerType?_type）?:?plot（_plot）
????graph（_graph）
????type（_type）
????visible（false）

{
????if?（plot）
????{
????????tracer?=?new?QCPItemTracer（plot）;
????????tracer->setstyle（QCPItemTracer::tsCircle）;//可以選擇設置追蹤光標的樣式，這個是小十字，還有大十字，圓點等樣式
????????tracer->setPen（QPen（Qt::green））;//設置tracer的顏色綠色
????????//tracer->setPen（graph->pen（））;//設置tracer的顏色跟曲線
????????tracer->setBrush（QPen（Qt::green）.color（））;
????????tracer->setSize（6）;

????????label?=?new?QCPItemText（plot）;
????????label->setlayer（“overlay“）;
????????label->setClipToAxisRect（false）;
????????label->setPadding（QMargins（5?5?5?5））;

????????label->position->setParentAnchor（tracer->position）;
????????label->setFont（QFont（“宋體“?10））;

????????arrow?=?new?QCPItemLine（plot）;
????????arrow->setlayer（“overlay“）;
????????//arrow->setPen（graph->pen（））;//設置箭頭的顏色跟隨曲線
????????arrow->setPen（QPen（Qt::red））;//設置箭頭的顏色紅色
????????arrow->setClipToAxisRect（false）;
????????arrow->setHead（QCPLineEnding::esSpikeArrow）;

????????switch?（type）?{
????????case?XAxisTracer:
????????{
????????????tracer->position->setTypeX（QCPItemPosition::ptPlotCoords）;
????????????tracer->position->setTypeY（QCPItemPosition::ptAxisRectRatio）;
????????????label->setBrush（QBrush（QColor（244?244?244?100）））;
????????????label->setPen（QPen（Qt::black））;

????????????label->setPositionAlignment（Qt::AlignTop|Qt::AlignHCenter）;

????????????arrow->end->setParentAnchor（tracer->position）;
????????????arrow->start->setParentAnchor（arrow->end）;
????????????arrow->start->setCoords（20?0）;//偏移量
????????????break;
????????}
????????case?YAxisTracer:
????????{
????????????tracer->position->setTypeX（QCPItemPosition::ptAxisRectRatio）;
????????????tracer->position->setTypeY（QCPItemPosition::ptPlotCoords）;

????????????label->setBrush（QBrush（QColor（244?244?244?100）））;
????????????label->setPen（QPen（Qt::black））;
????????????label->setPositionAlignment（Qt::AlignRight|Qt::AlignHCenter）;

????????????arrow->end->setParentAnchor（tracer->position）;
????????????arrow->start->setParentAnchor（label->position）;
????????????arrow->start->setCoords（-20?0）;//偏移量
????????????break;
????????}
????????case?DataTracer:
????????{
????????????tracer->position->setTypeX（QCPItemPosition::ptPlotCoords）;
????????????tracer->position->setTypeY（QCPItemPosition::ptPlotCoords）;

????????????label->setBrush（QBrush（QColor（244?244?244?150）））;
????????????//label->setPen（graph->pen（））;//邊框跟隨曲線顏色
????????????label->setPen（QPen（Qt::red））;//邊框紅色
????????????label->setPositionAlignment（Qt::AlignLeft|Qt::AlignVCenter）;

????????????arrow->end->setParentAnchor（tracer->position）;
????????????arrow->start->setParentAnchor（arrow->end）;
????????????arrow->start->setCoords（25?0）;
????????????break;
????????}

????????default:
????????????break;
????????}

????????setVisible（false）;
????}
}

myTracer::~myTracer（）
{
????if?

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????4732??2019-07-10?00:44??MyTracer\mytracer.cpp

?????文件???????1109??2019-07-10?00:29??MyTracer\mytracer.h

?????文件?????851667??2015-12-22?08:02??QCustomPlot\qcustomplot-一版.cpp

?????文件?????149282??2015-12-22?08:02??QCustomPlot\qcustomplot-一版.h

?????文件????1118717??2017-09-04?08:02??QCustomPlot\qcustomplot.cpp

?????文件?????266925??2017-09-04?08:02??QCustomPlot\qcustomplot.h

?????目錄??????????0??2019-07-10?09:12??MyTracer

?????目錄??????????0??2019-07-10?09:12??QCustomPlot

-----------?---------??----------?-----??----

??????????????2392432????????????????????8