杭州网站建设公司,在韩国注册公司需要什么条件,上海远程教育网站设计与开发公司,app是基于什么开发的程序示例精选 QtC自定义控件仪表盘动画仿真 如需安装运行环境或远程调试#xff0c;见文章底部个人QQ名片#xff0c;由专业技术人员远程协助#xff01; 前言
这篇博客针对QtC自定义控件仪表盘动画仿真编写代码#xff0c;代码整洁#xff0c;规则… 程序示例精选 QtC自定义控件仪表盘动画仿真 如需安装运行环境或远程调试见文章底部个人QQ名片由专业技术人员远程协助 前言
这篇博客针对QtC自定义控件仪表盘动画仿真编写代码代码整洁规则易读。 学习与应用推荐首选。 文章目录
一、所需工具软件
二、使用步骤 1. 引入库 2. 代码实现 3. 运行结果
三、在线协助 一、所需工具软件
1. VS, Qt
2. C 二、使用步骤
1.引入库
#include QWidget
#include QPropertyAnimation
#include QtMath
#include QPainter
2. 代码实现
代码如下:
#include GaugePanel.h
GaugePanel::~GaugePanel()
{hShearAnimation-stop();vShearAnimation-stop();delete hShearAnimation;delete vShearAnimation;
}void GaugePanel::paintEvent(QPaintEvent*)
{int width this-width();int height this-height();int side qMin(width, height);//绘制准备工作,启用反锯齿,平移坐标轴中心,等比例缩放QPainter painter(this);painter.setRenderHints(QPainter::Antialiasing | QPainter::TextAntialiasing);painter.translate(width / 2, height / 2);painter.scale(side / 215.0, side / 215.0);painter.shear(double(hShearValue / 100.0f), double(vShearValue / 100.0f));//内层渐变drawInnerGradient(painter);//外层渐变drawOuterGradient(painter);//外层光晕drawOuterHalo(painter);//刻度线drawScale(painter);//刻度值drawScaleNum(painter);//绘制指针drawPointer(painter);//绘制指针扇形drawPointerSector(painter);//绘制值drawValue(painter);//绘制单位drawUnit(painter);
}void GaugePanel::drawOuterGradient(QPainter* painter)
{if (radiusHalo radiusOuter)return;painter-save();QRectF rectangle(0 - radiusHalo, 0 - radiusHalo, radiusHalo * 2, radiusHalo * 2);QPen framePen(colorOuterFrame);framePen.setWidthF(1.5f);painter-setPen(framePen);painter-drawEllipse(rectangle);painter-setPen(Qt::NoPen);QPainterPath smallCircle;QPainterPath bigCircle;float radius radiusOuter;smallCircle.addEllipse(-radius, -radius, radius * 2, radius * 2);radius (radiusHalo - radiusOuter);bigCircle.addEllipse(-radius, -radius, radius * 2, radius * 2);//大圆抛去小圆部分QPainterPath gradientPath bigCircle - smallCircle;QRadialGradient gradient(0, 0, radius, 0, 0);//gradient.setSpread(QGradient::ReflectSpread);gradient.setColorAt(0.85, colorOuterStart);gradient.setColorAt(0.98, colorOuterEnd);painter-setBrush(gradient);painter-drawPath(gradientPath);painter-restore();
}void GaugePanel::drawInnerGradient(QPainter* painter)
{if (radiusOuter radiusInner)return;painter-save();painter-setPen(Qt::NoPen);QPainterPath smallCircle;QPainterPath bigCircle;float radius radiusInner;smallCircle.addEllipse(-radius, -radius, radius * 2, radius * 2);radius (radiusOuter - radiusInner);bigCircle.addEllipse(-radius, -radius, radius * 2, radius * 2);//大圆抛去小圆部分QPainterPath gradientPath bigCircle - smallCircle;QRadialGradient gradient(0, 0, radius, 0, 0);//gradient.setSpread(QGradient::ReflectSpread);gradient.setColorAt(0.7, colorInnerStart);gradient.setColorAt(1, colorInnerEnd);painter-setBrush(gradient);painter-drawPath(gradientPath);painter-restore();
}void GaugePanel::drawOuterHalo(QPainter* painter)
{painter-save();painter-setPen(Qt::NoPen);QPainterPath smallCircle;QPainterPath bigCircle;float radius radiusHalo;smallCircle.addEllipse(-radius, -radius, radius * 2, radius * 2);radius (110.0 - radiusHalo);bigCircle.addEllipse(-radius, -radius, radius * 2, radius * 2);//大圆抛去小圆部分QPainterPath gradientPath bigCircle - smallCircle;QRadialGradient gradient(0, 0, 100, 0, 0);gradient.setSpread(QGradient::ReflectSpread);gradient.setColorAt(radiusHalo / 100, colorHaloStart);gradient.setColorAt(1, colorHaloEnd);painter-setBrush(gradient);painter-drawPath(gradientPath);painter-restore();
}void GaugePanel::drawScale(QPainter* painter)
{float radius 85;painter-save();painter-setPen(QColor(255, 255, 255));painter-rotate(30);int steps (30);double angleStep (360.0 - 60) / steps;QPen pen painter-pen();pen.setCapStyle(Qt::RoundCap);for (int i 0; i steps; i) {if (i % 3 0) {pen.setWidthF(1.5);painter-setPen(pen);QLineF line(0.0f, radius - 8.0f, 0.0f, radius);painter-drawLine(line);}else {pen.setWidthF(0.5);painter-setPen(pen);QLineF line(0.0f, radius - 3.0f, 0.0f, radius);painter-drawLine(line);}painter-rotate(angleStep);}painter-restore();
}void GaugePanel::drawScaleNum(QPainter* painter)
{float radius 95.0f;painter-save();painter-setPen(QColor(255, 255, 255));double startRad (330 - 90) * (M_PI / 180);double deltaRad (300) * (M_PI / 180) / 10;for (int i 0; i 10; i) {double sina sin(startRad - i * deltaRad);double cosa cos(startRad - i * deltaRad);double value 1.0 * i * ((30) / 10);//刻度值范围QString strValue QString(%1).arg((double)value, 0, f, 0);double textWidth fontMetrics().width(strValue);double textHeight fontMetrics().height();int x radius * cosa - textWidth / 2;int y -radius * sina textHeight / 4;painter-drawText(x, y, strValue);}painter-restore();
}void GaugePanel::drawPointer(QPainter* painter)
{painter-save();float radius 83.0;painter-rotate(30 int(value * 10));QPen pen painter-pen();pen.setWidthF(1.0);pen.setColor(QColor(50, 154, 255, 200));painter-setPen(pen);QLineF line(0.0f, 0.0f, 0.0f, radius);painter-drawLine(line);painter-restore();
}void GaugePanel::drawPointerSector(QPainter* painter)
{float radius 87.5f;painter-save();painter-setPen(Qt::NoPen);QRectF rect(-radius, -radius, radius * 2, radius * 2);painter-setBrush(QColor(50, 154, 255, 50));painter-drawPie(rect, -120 * 16, -value * 16 * 10);painter-restore();
}void GaugePanel::drawValue(QPainter* painter)
{int radius 100;painter-save();painter-setPen(QColor(255, 255, 255));painter-setFont(QFont(Arial, 22, 22, true));QRectF textRect(-radius, -radius, radius * 2, radius * 2);QString strValue QString(%1).arg((double)value, 0, f, 0);painter-drawText(textRect, Qt::AlignCenter, strValue);painter-restore();
}void GaugePanel::drawUnit(QPainter* painter)
{int radius 100;painter-save();painter-setPen(QColor(255, 255, 255));painter-setFont(QFont(Arial, 9, -1, true));QRectF textRect(-radius, -radius 20, radius * 2, radius * 2);painter-drawText(textRect, Qt::AlignCenter, km/h);painter-restore();
}double GaugePanel::getValue() const
{return this-value;
}int GaugePanel::getHShearValue() const
{return this-hShearValue;
}int GaugePanel::getVShearValue() const
{return this-vShearValue;
}double GaugePanel::getRadiusInner() const
{return radiusInner;
}double GaugePanel::getRadiusOuter() const
{return radiusOuter;
}double GaugePanel::getRadiusHalo() const
{return radiusHalo;
}QColor GaugePanel::getColorOuterFrame() const
{return colorOuterFrame;
}QColor GaugePanel::getColorInnerStart() const
{return colorInnerStart;
}QColor GaugePanel::getColorInnerEnd() const
{return colorInnerEnd;
}QColor GaugePanel::getColorOuterStart() const
{return colorOuterStart;
}QColor GaugePanel::getColorOuterEnd() const
{return colorOuterEnd;
}QColor GaugePanel::getColorHaloStart() const
{return colorHaloStart;
}QColor GaugePanel::getColorHaloEnd() const
{return colorHaloEnd;
}void GaugePanel::setValue(int value)
{setValue(double(value));
}void GaugePanel::setValue(double value) {updateValue(value);
}void GaugePanel::setHShearValue(int value)
{if (value 100 || value -100)return;this-hShearValue value;update();
}void GaugePanel::setVShearValue(int value)
{if (value 100 || value -100)return;this-vShearValue value;update();
}void GaugePanel::setColorOuterFrame(QColor color)
{colorOuterFrame color;
}void GaugePanel::setRadiusInner(int radius)
{setRadiusInner(double(radius));
}void GaugePanel::setRadiusInner(double radius)
{if (radius 0.0f radius 100.0f) {radiusInner radius;update();}
}void GaugePanel::setRadiusOuter(int radius)
{setRadiusOuter(double(radius));
}void GaugePanel::setRadiusOuter(double radius)
{if (radius 0.0f radius 100.0f) {radiusOuter radius;update();}
}void GaugePanel::setRadiusHalo(int radius)
{setRadiusHalo(double(radius));
}void GaugePanel::setRadiusHalo(double radius)
{if (radius 0.0f radius 100.0f) {radiusHalo radius;update();}
}void GaugePanel::setColorInnerStart(QColor color)
{colorInnerStart color;
}void GaugePanel::setColorInnerEnd(QColor color)
{colorInnerEnd color;
}void GaugePanel::setColorOuterStart(QColor color)
{colorOuterStart color;
}void GaugePanel::setColorOuterEnd(QColor color)
{colorOuterEnd color;
}void GaugePanel::setColorHaloStart(QColor color)
{colorHaloStart color;
}void GaugePanel::setColorHaloEnd(QColor color)
{colorHaloEnd color;
}void GaugePanel::startShearAnimal(int duration, int hShearValue, int vShearValue)
{if (hShearValue this-hShearValue vShearValue this-vShearValue) {return;}if (hShearAnimation-state() ! QPropertyAnimation::Stopped) {hShearAnimation-stop();}if (vShearAnimation-state() ! QPropertyAnimation::Stopped) {vShearAnimation-stop();}hShearAnimation-setDuration(duration);hShearAnimation-setStartValue(this-hShearValue);hShearAnimation-setEndValue(hShearValue);hShearAnimation-start();vShearAnimation-setDuration(duration);vShearAnimation-setStartValue(this-vShearValue);vShearAnimation-setEndValue(vShearValue);vShearAnimation-start();
}void GaugePanel::updateValue(double value)
{if (value 30.0 || value 0.0) {return;}this-value value;//update();this-update();// emit valueChanged(value);
}3. 运行结果
三、在线协助 如需安装运行环境或远程调试见文章底部个人 QQ 名片由专业技术人员远程协助 1远程安装运行环境代码调试 2Qt, C, Python入门指导 3界面美化 4软件制作 当前文章连接PythonQt桌面端与网页端人工客服沟通工具_alicema1111的博客-CSDN博客
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