35 lines
1.1 KiB
C++
35 lines
1.1 KiB
C++
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#include "frmsimpleitem.h"
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#include "ui_frmsimpleitem.h"
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#include "qdebug.h"
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frmSimpleItem::frmSimpleItem(QWidget *parent) : QWidget(parent), ui(new Ui::frmSimpleItem)
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{
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ui->setupUi(this);
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this->initForm();
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}
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frmSimpleItem::~frmSimpleItem()
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{
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delete ui;
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}
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void frmSimpleItem::initForm()
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{
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ui->customPlot->setInteractions(QCP::iRangeDrag | QCP::iRangeZoom);
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// add the text label at the top:
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QCPItemText *textLabel = new QCPItemText(ui->customPlot);
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textLabel->setPositionAlignment(Qt::AlignTop|Qt::AlignHCenter);
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textLabel->position->setType(QCPItemPosition::ptAxisRectRatio);
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textLabel->position->setCoords(0.5, 0); // place position at center/top of axis rect
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textLabel->setText("Text Item Demo");
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textLabel->setFont(QFont(font().family(), 16)); // make font a bit larger
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textLabel->setPen(QPen(Qt::black)); // show black border around text
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// add the arrow:
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QCPItemLine *arrow = new QCPItemLine(ui->customPlot);
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arrow->start->setParentAnchor(textLabel->bottom);
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arrow->end->setCoords(4, 1.6); // point to (4, 1.6) in x-y-plot coordinates
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arrow->setHead(QCPLineEnding::esSpikeArrow);
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}
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