一、前言
天气仪表盘控件是所有控件中唯一一个使用了svg矢量图的控件，各种天气图标采用的矢量图，颜色变换采用动态载入svg的内容更改生成的，其实也可以采用图形字体来做，本次控件为了熟悉下svg在Qt中的使用，才采用的svg来绘制。 天气一般要表示多个内容，温度+湿度+天气等，这就需要合理的布局多种元素的位置才能更加美观一些，这里参照的是网上一些通用的做法，比如最外层圆环是温度，中间圆环湿度，然后天气图标贴在中间圆环里边的左上角，同时再绘制温度湿度的值，动态变化的。
二、实现的功能
1:可设置两种值,比如温度+湿度2:可设置两种值的背景颜色+文字颜色3:可设置零度值左侧右侧两种颜色4:可设置圆的起始角度和结束角度5:可设置10种天气,晴天+雨天+阴天+大风等6:可设置各种其他颜色7:科设置是否启用动画显示进度以及动画步长三、效果图
四、头文件代码
#ifndef GAUGEWEATHER_H#define GAUGEWEATHER_H/*** 天气仪表盘控件 作者:东门吹雪(QQ:709102202) 整理:飞扬青云(QQ:517216493) -4-23* 1:可设置两种值,比如温度+湿度* 2:可设置两种值的背景颜色+文字颜色* 3:可设置零度值左侧右侧两种颜色* 4:可设置圆的起始角度和结束角度* 5:可设置10种天气,晴天+雨天+阴天+大风等* 6:可设置各种其他颜色* 7:科设置是否启用动画显示进度以及动画步长*/#include <QWidget>#include <QDomElement>#ifdef quc#if (QT_VERSION < QT_VERSION_CHECK(5,7,0))#include <QtDesigner/QDesignerExportWidget>#else#include <QtUiPlugin/QDesignerExportWidget>#endifclass QDESIGNER_WIDGET_EXPORT GaugeWeather : public QWidget#elseclass GaugeWeather : public QWidget#endif{Q_OBJECTQ_ENUMS(WeatherType)Q_PROPERTY(double outerValue READ getOuterValue WRITE setOuterValue)Q_PROPERTY(double outerMinValue READ getOuterMinValue WRITE setOuterMinValue)Q_PROPERTY(double outerMaxValue READ getOuterMaxValue WRITE setOuterMaxValue)Q_PROPERTY(int outerStartAngle READ getOuterStartAngle WRITE setOuterStartAngle)Q_PROPERTY(int outerEndAngle READ getOuterEndAngle WRITE setOuterEndAngle)Q_PROPERTY(QColor outerRingBgColor READ getOuterRingBgColor WRITE setOuterRingBgColor)Q_PROPERTY(QColor outerRingColor READ getOuterRingColor WRITE setOuterRingColor)Q_PROPERTY(double innerValue READ getInnerValue WRITE setInnerValue)Q_PROPERTY(double innerMinValue READ getInnerMinValue WRITE setInnerMinValue)Q_PROPERTY(double innerMaxValue READ getInnerMaxValue WRITE setInnerMaxValue)Q_PROPERTY(int innerStartAngle READ getInnerStartAngle WRITE setInnerStartAngle)Q_PROPERTY(int innerEndAngle READ getInnerEndAngle WRITE setInnerEndAngle)Q_PROPERTY(QColor innerRingBgColor READ getInnerRingBgColor WRITE setInnerRingBgColor)Q_PROPERTY(QColor innerRingNegativeColor READ getInnerNegativeColor WRITE setInnerNegativeColor)Q_PROPERTY(QColor innerRingPositiveColor READ getInnerPositiveColor WRITE setInnerPositiveColor)Q_PROPERTY(int innerScaleMajor READ getInnerScaleMajor WRITE setInnerScaleMajor)Q_PROPERTY(int innerScaleMinor READ getInnerScaleMinor WRITE setInnerScaleMinor)Q_PROPERTY(QColor innerScaleColor READ getInnerScaleColor WRITE setInnerScaleColor)Q_PROPERTY(QColor innerScaleNumColor READ getInnerScaleNumColor WRITE setInnerScaleNumColor)Q_PROPERTY(QColor centerPixMapNegativeColor READ getCenterPixMapNegativeColor WRITE setCenterPixMapNegativeColor)Q_PROPERTY(QColor centerPixMapPositiveColor READ getCenterPixMapPositiveColor WRITE setCenterPixMapPositiveColor)Q_PROPERTY(QColor outerValueTextColor READ getOuterValueTextColor WRITE setOuterValueTextColor)Q_PROPERTY(QColor innerNegativeValueTextColor READ getInnerNegativeValueTextColor WRITE setInnerNegativeValueTextColor)Q_PROPERTY(QColor innerPositiveValueTextColor READ getInnerPositiveValueTextColor WRITE setInnerPositiveValueTextColor)Q_PROPERTY(bool animation READ getAnimation WRITE setAnimation)Q_PROPERTY(double animationStep READ getAnimationStep WRITE setAnimationStep)Q_PROPERTY(WeatherType weatherType READ getWeatherType WRITE setWeatherType)public:enum WeatherType {SUNNY = 0,//晴天RAINY = 1,//雨天SNOWY = 2,//雪天CLOUDY = 3, //多云WINDY = 4,//风SNOWY_RAINY = 5, //雪雨HAIL = 6, //冰雹LIGHTNING = 7,//闪电FOG = 8, //雾PARTLYCLOUDY = 9 //局部多云};explicit GaugeWeather(QWidget *parent = 0);~GaugeWeather();protected:void paintEvent(QPaintEvent *);void drawOuterRingBg(QPainter *painter);void drawOuterRing(QPainter *painter);void drawInnerRingBg(QPainter *painter);void drawInnerRing(QPainter *painter);void drawInnerRingScale(QPainter *painter);void drawInnerRingScaleNum(QPainter *painter);void drawCenterPixMap(QPainter *painter);void drawValue(QPainter *painter);private slots:void updateOuterValue(); //更新外圈数值void updateInnerValue(); //更新内圈数值private:double outerMaxValue;//外圈最大值double outerMinValue;//外圈最小值double outerValue; //外圈值double outerCurrValue; //外圈当前值int outerStartAngle;//外环开始旋转角度int outerEndAngle; //外环结束旋转角度QColor outerRingBgColor; //外圈背景色QColor outerRingColor; //外圈当前色double innerMaxValue;//内圈最大值double innerMinValue;//内圈最小值double innerValue; //内圈值double innerCurrValue; //内圈当前值int innerStartAngle;//内环开始旋转角度int innerEndAngle; //内环结束旋转角度QColor innerRingBgColor; //内圈背景色QColor innerRingNegativeColor;//内圈负值当前色QColor innerRingPositiveColor;//内圈正值当前色int innerScaleMajor;//内环大刻度数量int innerScaleMinor;//内环小刻度数量QColor innerScaleColor; //内环刻度颜色QColor innerScaleNumColor;//内环刻度值颜色int precision; //精确度,小数点后几位QColor centerPixMapNegativeColor; //中心图片颜色QColor centerPixMapPositiveColor; //中心图片颜色QString centerSvgPath; //当前svg图片路径WeatherType weatherType; //天气类型QColor outerValueTextColor; //外环值文本颜色QColor innerNegativeValueTextColor; //内环正值文本颜色QColor innerPositiveValueTextColor; //内环负值文本颜色bool animation; //是否启用动画显示double animationStep;//动画显示时步长bool outerReverse; //是否往回走bool innerReverse; //是否往回走bool clockWise; //顺时针QTimer *outerTimer; //外环定时器绘制动画QTimer *innerTimer; //内环定时器绘制动画//将svg文件中的xml数据颜色替换void setColor(QDomElement elem, QString strtagname, QString strattr, QString strattrval);QString rgb2HexStr(const QColor &color);public:double getOuterMinValue()const;double getOuterMaxValue()const;double getOuterValue() const;int getOuterStartAngle()const;int getOuterEndAngle() const;QColor getOuterRingBgColor() const;QColor getOuterRingColor() const;double getInnerMaxValue()const;double getInnerMinValue()const;double getInnerValue() const;int getInnerStartAngle()const;int getInnerEndAngle() const;QColor getInnerRingBgColor() const;QColor getInnerNegativeColor()const;QColor getInnerPositiveColor()const;int getInnerScaleMajor()const;int getInnerScaleMinor()const;QColor getInnerScaleColor() const;QColor getInnerScaleNumColor()const;bool getAnimation() const;double getAnimationStep()const;WeatherType getWeatherType() const;QColor getCenterPixMapNegativeColor() const;QColor getCenterPixMapPositiveColor() const;QColor getOuterValueTextColor() const;QColor getInnerNegativeValueTextColor() const;QColor getInnerPositiveValueTextColor() const;QSize sizeHint() const;QSize minimumSizeHint() const;public Q_SLOTS:void setWeatherType(WeatherType &type);//设置范围值void setOuterRange(double minValue, double maxValue);//设置外环最大最小值void setOuterMinValue(double value);void setOuterMaxValue(double value);//设置外环值void setOuterValue(double value);//设置外环开始旋转角度void setOuterStartAngle(int startAngle);//设置外环结束旋转角度void setOuterEndAngle(int endAngle);//设置外环背景色void setOuterRingBgColor(const QColor &color);//设置外环进度色void setOuterRingColor(const QColor &color);//设置范围值void setInnerRange(double minValue, double maxValue);void setInnerMinValue(double value);void setInnerMaxValue(double value);void setInnerValue(double value);void setInnerStartAngle(int startAngle);void setInnerEndAngle(int endAngle);void setInnerRingBgColor(const QColor &color);void setInnerNegativeColor(const QColor &color);void setInnerPositiveColor(const QColor &color);void setInnerScaleMajor(int value);void setInnerScaleMinor(int value);void setInnerScaleColor(const QColor &color);void setInnerScaleNumColor(const QColor &color);//设置中心图标颜色void setCenterPixMapNegativeColor(const QColor &color);void setCenterPixMapPositiveColor(const QColor &color);void setOuterValueTextColor(const QColor &color);void setInnerNegativeValueTextColor(const QColor &color);void setInnerPositiveValueTextColor(const QColor &color);//设置是否启用动画显示void setAnimation(bool animation);//设置动画显示的步长void setAnimationStep(double animationStep);Q_SIGNALS:void valueChanged(double value);};#endif // GAUGEWEATHER_H
五、核心代码
void GaugeWeather::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 / 200.0, side / 200.0);//绘制外环背景drawOuterRingBg(&painter);//绘制外环进度drawOuterRing(&painter);//绘制内环背景drawInnerRingBg(&painter);//绘制内环进度drawInnerRing(&painter);//绘制内环刻度值drawInnerRingScaleNum(&painter);//绘制中心图片drawCenterPixMap(&painter);//绘制数值drawValue(&painter);}void GaugeWeather::drawOuterRingBg(QPainter *painter){int radius = 99;painter->save();painter->setBrush(Qt::NoBrush);//绘制圆弧方法绘制圆环int penWidth = 13;QRectF rect(-radius + penWidth / 2, -radius + penWidth / 2, radius * 2 - penWidth, radius * 2 - penWidth);//可以自行修改画笔的后三个参数,形成各种各样的效果,例如Qt::FlatCap改为Qt::RoundCap可以产生圆角效果QPen pen(outerRingBgColor, penWidth, Qt::SolidLine, Qt::FlatCap, Qt::MPenJoinStyle);//计算总范围角度double angleAll = 360.0 - outerStartAngle - outerEndAngle;//绘制总范围角度圆弧pen.setColor(outerRingBgColor);painter->setPen(pen);painter->drawArc(rect, (270 - outerStartAngle - angleAll) * 16, angleAll * 16);painter->restore();}void GaugeWeather::drawOuterRing(QPainter *painter){int radius = 99;painter->save();painter->setBrush(Qt::NoBrush);//绘制圆弧方法绘制圆环int penWidth = 13;QRectF rect(-radius + penWidth / 2, -radius + penWidth / 2, radius * 2 - penWidth, radius * 2 - penWidth);//可以自行修改画笔的后三个参数,形成各种各样的效果,例如Qt::FlatCap改为Qt::RoundCap可以产生圆角效果QPen pen(outerRingColor, penWidth, Qt::SolidLine, Qt::FlatCap, Qt::MPenJoinStyle);//计算总范围角度,当前值范围角度,剩余值范围角度double angleAll = 360.0 - outerStartAngle - outerEndAngle;double angleCurrent = angleAll * ((outerCurrValue - outerMinValue) / (outerMaxValue - outerMinValue));//绘制当前值饼圆painter->setPen(pen);painter->drawArc(rect, (270 - outerStartAngle - angleCurrent) * 16, angleCurrent * 16);painter->restore();}void GaugeWeather::drawInnerRingBg(QPainter *painter){int radius = 77;painter->save();painter->setBrush(Qt::NoBrush);double penWidth = 13;QPen pen(innerRingBgColor, penWidth, Qt::SolidLine, Qt::FlatCap, Qt::MPenJoinStyle);painter->setPen(pen);double angleAll = 360.0 - innerStartAngle - innerEndAngle;QRectF rect = QRectF(-radius, -radius, radius * 2, radius * 2);//零值以上背景painter->drawArc(rect, (270 - innerStartAngle - angleAll) * 16 , angleAll * 16);//零值以下背景//painter->drawArc(rect,(270 -innerStartAngle - null2MinAngle) * 16 ,null2MinAngle * 16);painter->restore();}void GaugeWeather::drawInnerRing(QPainter *painter){int radius = 77;painter->save();painter->setBrush(Qt::NoBrush);int penWidth = 13.5;QPen pen(innerRingPositiveColor, penWidth, Qt::SolidLine, Qt::FlatCap, Qt::MPenJoinStyle);double angleAll = 360.0 - innerStartAngle - innerEndAngle;double null2MinAngle = angleAll * (( 0 - innerMinValue) / (innerMaxValue - innerMinValue)); //零点所占的角度double nullUpAllAngle = angleAll - null2MinAngle; //正基本角度double currAngle;if(innerCurrValue >= 0) {//正角度pen.setColor(innerRingNegativeColor);currAngle = nullUpAllAngle * (innerCurrValue / innerMaxValue) * -1;} else {//负角度pen.setColor(innerRingPositiveColor);currAngle = null2MinAngle * (innerCurrValue / innerMinValue);}painter->setPen(pen);QRectF rect = QRectF(-radius, -radius, radius * 2, radius * 2);painter->drawArc(rect, (270 - innerStartAngle - null2MinAngle) * 16 , currAngle * 16);painter->restore();}void GaugeWeather::drawInnerRingScale(QPainter *painter){int radius = 76;painter->save();painter->setPen(innerScaleColor);painter->rotate(innerStartAngle);int steps = (innerScaleMajor * innerScaleMinor);double angleStep = (360.0 - innerStartAngle - innerEndAngle) / steps;QPen pen = painter->pen();pen.setCapStyle(Qt::RoundCap);for (int i = 0; i <= steps; i++) {if (i % innerScaleMinor == 0) {pen.setWidthF(1.5);painter->setPen(pen);painter->drawLine(0, radius - 12, 0, radius);} else {pen.setWidthF(1.0);painter->setPen(pen);painter->drawLine(0, radius - 5, 0, radius);}painter->rotate(angleStep);}painter->restore();}
六、控件介绍
超过150个精美控件，涵盖了各种仪表盘、进度条、进度球、指南针、曲线图、标尺、温度计、导航条、导航栏，flatui、高亮按钮、滑动选择器、农历等。远超qwt集成的控件数量。每个类都可以独立成一个单独的控件，零耦合，每个控件一个头文件和一个实现文件，不依赖其他文件，方便单个控件以源码形式集成到项目中，较少代码量。qwt的控件类环环相扣，高度耦合，想要使用其中一个控件，必须包含所有的代码。全部纯Qt编写，QWidget+QPainter绘制，支持Qt4.6到Qt5.12的任何Qt版本，支持mingw、msvc、gcc等编译器，支持任意操作系统比如windows+linux+mac+嵌入式linux等，不乱码，可直接集成到Qt Creator中，和自带的控件一样使用，大部分效果只要设置几个属性即可，极为方便。每个控件都有一个对应的单独的包含该控件源码的DEMO，方便参考使用。同时还提供一个所有控件使用的集成的DEMO。每个控件的源代码都有详细中文注释，都按照统一设计规范编写，方便学习自定义控件的编写。每个控件默认配色和demo对应的配色都非常精美。超过130个可见控件，6个不可见控件。部分控件提供多种样式风格选择，多种指示器样式选择。所有控件自适应窗体拉伸变化。集成自定义控件属性设计器，支持拖曳设计，所见即所得，支持导入导出xml格式。自带activex控件demo，所有控件可以直接运行在ie浏览器中。集成fontawesome图形字体+阿里巴巴iconfont收藏的几百个图形字体，享受图形字体带来的乐趣。所有控件最后生成一个dll动态库文件，可以直接集成到qtcreator中拖曳设计使用。目前已经有qml版本，后期会考虑出pyqt版本，如果用户需求量很大的话。七、SDK下载
SDK下载链接：/s/1A5Gd77kExm8Co5ckT51vvQ 提取码：877p下载链接中包含了各个版本的动态库文件，所有控件的头文件，使用demo，自定义控件+属性设计器。自定义控件插件开放动态库dll使用（永久免费），无任何后门和限制，请放心使用。 目前已提供26个版本的dll，其中包括了qt5.12.3 msvc 32+64 mingw 32+64 的。不定期增加控件和完善控件，不定期更新SDK，欢迎各位提出建议，谢谢！widget版本（QQ：517216493）qml版本（QQ：373955953）三峰驼（QQ：278969898）。涛哥的知乎专栏 Qt进阶之路 /TaoQt欢迎关注微信公众号【高效程序员】，C++/Python、学习方法、写作技巧、热门技术、职场发展等内容，干货多多，福利多多！Qt入门书籍推荐霍亚飞的《Qt Creator快速入门》《Qt5编程入门》，Qt进阶书籍推荐官方的《C++ GUI Qt4编程》。强烈推荐程序员自我修养和规划系列书《大话程序员》《程序员的成长课》《解忧程序员》！如果觉得《qt动画效果_Qt编写自定义控件44-天气仪表盘》对你有帮助，请点赞、收藏，并留下你的观点哦！
