QT实现自定义多边形维度图 4.62KB

u012959478

资源文件列表:

DimensionDemo.zip 大约有7个文件

DimensionDemo/
DimensionDemo/dimensionchartwidget.cpp 5.44KB
DimensionDemo/dimensionchartwidget.h 2.62KB
DimensionDemo/DimensionDemo.pro 686B
DimensionDemo/main.cpp 172B
DimensionDemo/mainwindow.cpp 1.19KB
DimensionDemo/mainwindow.h 217B

资源介绍:

QT自定义维度图，本示例实现六边形战力统计维度图，一种将六个维度的战力统计以六边形图形展示的方法。六个维度是：攻击力、防御力、速度、智力、生命值、特殊能力。六边形战力统计维度图将这些维度以六个边长不等的六边形表示，每个边长代表对应维度的数值大小。通过连接这些边，可以得到一个多边形，多边形的形状和大小表示单位的整体战斗能力。

#include "DimensionChartWidget.h" #include <QPainter> #include <QtMath> #include <QPainterPath> DimensionChartWidget::DimensionChartWidget(QWidget *parent) : QWidget(parent) { m_radius = 0; m_sidesNumber = 1; init(); } void DimensionChartWidget::paintEvent(QPaintEvent *) { QPainter painter(this); painter.setRenderHint(QPainter::Antialiasing); painter.setPen(QColor(m_backgroundColor)); painter.setBrush(QBrush(m_backgroundColor)); painter.drawRoundedRect(rect(), m_filletRadius, m_filletRadius); // 绘图设备的坐标原点（0,0)在左上角，水平向右增长，垂直向下增长。 // 将坐标系原点移动到界面中间 painter.translate(width() / 2.0, height() / 2.0); // 设中心点到边的垂线与半径的夹角为degree=（360/count)/2 float degree = 360.0 / m_dimensionInfos.size(); // 开始绘制多边形，并为每个区域上色 painter.setPen(m_sidesPen); QPointF lastPoint(0, -m_radius); QVector<QPointF> points; for(int i = 0; i < m_dimensionInfos.size(); i++) { float radian = qDegreesToRadians(degree * (i + 1)); float x = m_radius * qSin(radian); float y = m_radius * qCos(radian); // 绘制该三角区块 QPainterPath path; QPointF point(x, -y); path.lineTo(point); path.lineTo(lastPoint); path.lineTo(0, 0); painter.drawPath(path); // 绘制内线 for(int j = m_sidesNumber - 1; j > 0; j--) { float multiple = (float)j / m_sidesNumber; painter.drawLine(point * multiple, lastPoint * multiple); } // 绘制文本 painter.save(); painter.setPen(m_textPen); painter.setFont(m_textFont); drawText(painter, point, m_dimensionInfos.at(i).text()); painter.restore(); lastPoint = point; points << point * m_dimensionInfos.at(i).percentage(); } // 绘制维度信息 painter.setPen(m_dimensionPen); QColor color = m_dimensionPen.color(); color.setAlpha(150); painter.setBrush(QBrush(color)); QPolygonF polygon(points); QPainterPath painterPath; painterPath.addPolygon(polygon); painter.drawPolygon(polygon); } //绘制文本 void DimensionChartWidget::drawText(QPainter& painter, QPointF point, QString text) { convertPoint(point); QRectF textRect; textRect.setSize(QSize(50, 30)); int flag = Qt::AlignCenter; if(point.x() > 0) { if(point.y() < 0) { //x > 0 y < 0 textRect.setBottomLeft(point); textRect.setTopRight(QPoint(point.x() + 50, point.y() - 30)); flag = Qt::AlignBottom | Qt::AlignLeft; } else if(point.y() > 0) { //x>0 y>0 textRect.setTopLeft(point); textRect.setBottomRight(QPoint(point.x() + 50, point.y() + 30)); flag = Qt::AlignTop | Qt::AlignLeft; } else { //x>0 y=0 point.setY(point.y() - 15); textRect.setTopLeft(point); textRect.setBottomRight(QPoint(point.x() + 50, point.y() + 30)); flag = Qt::AlignVCenter | Qt::AlignLeft; } } else if(point.x() < 0) { if(point.y() < 0) { //x<0 y<0 textRect.setBottomRight(point); textRect.setTopLeft(QPoint(point.x() - 50, point.y() - 30)); flag = Qt::AlignBottom | Qt::AlignRight; } else if(point.y() > 0) { //x<0 y>0 textRect.setTopRight(point); textRect.setBottomLeft(QPoint(point.x() - 50, point.y() + 30)); flag = Qt::AlignTop | Qt::AlignRight; } else { //x<0 y=0 point.setY(point.y() - 15); textRect.setTopRight(point); textRect.setBottomLeft(QPoint(point.x() - 50, point.y() + 30)); flag = Qt::AlignVCenter | Qt::AlignRight; } } else { if(point.y() < 0) { //x=0 y<0 point.setX(point.x() - 25); textRect.setBottomRight(point); textRect.setTopLeft(QPoint(point.x() + 50, point.y() - 30)); flag = Qt::AlignHCenter | Qt::AlignBottom; } else if(point.y() > 0) { //x=0 y>0 point.setX(point.x() - 25); textRect.setTopLeft(point); textRect.setBottomRight(QPoint(point.x() + 50, point.y() + 30)); flag = Qt::AlignHCenter | Qt::AlignTop; } } painter.drawText(textRect, flag, text); } void DimensionChartWidget::convertPoint(QPointF& point) { if(qAbs(point.x()) < 0.001) { point.setX(0); } else if(qAbs(point.y()) < 0.001) { point.setY(0); } } void DimensionChartWidget::init() { setBackgroundColor(QColor(255,255,255)); // 设置维度网格数量 setSidesNumber(5); // 设置维度半径 setRadius(120); // 设置维度网格画笔 QPen sidesPen; sidesPen.setColor(QColor("#0095C5")); sidesPen.setWidth(2); setSidesPen(sidesPen); // 设置维度画笔 QPen dimensionPen; dimensionPen.setColor(Qt::GlobalColor::red); dimensionPen.setWidth(3); setDimensionPen(dimensionPen); // 设置字体信息 QPen textPen; setTextPen(textPen); QFont textFont; textFont.setFamily("微软雅黑"); textFont.setPointSize(10); setTextFont(textFont); }

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