进度仪表盘主要应用场景是标识一个任务进度完成的情况等,能够自由的设置范围值和当前值,为了美观还提供了四种指示器(圆形指示器/指针指示器/圆角指针指示器/三角形指示器),各类颜色均可以设置,其中的动画效果采用的QPropertyAnimation类来实现,主要是线性插值法,生成必定规则的数值,用于设定的属性。今天有个朋友须要安卓版本的控件,其实采用qwidget写的控件均可以直接编译就能够到android上,因而直接从新编译了安卓版本,对应的apk已上传到共享文件夹,文末贴出android运行效果图。android
#ifndef GAUGEPROGRESS_H #define GAUGEPROGRESS_H /** * 进度条仪表盘控件 做者:feiyangqingyun(QQ:517216493) 2016-12-03 * 1:支持指示器样式选择 圆形指示器/指针指示器/圆角指针指示器/三角形指示器 * 2:支持鼠标按下旋转改变值 * 3:支持负数范围值 * 4:支持设置当前值及范围值 * 5:支持设置起始旋转角度和结束旋转角度 * 6:支持设置背景色/进度颜色/中间圆渐变颜色 * 7:随窗体拉伸自动变化 * 8:支持鼠标进入和离开动画效果 * 9:可设置是否显示当前值 * 10:可设置是否显示指示器 */ #include <QWidget> #include <QVariant> class QPropertyAnimation; #ifdef quc #if (QT_VERSION < QT_VERSION_CHECK(5,7,0)) #include <QtDesigner/QDesignerExportWidget> #else #include <QtUiPlugin/QDesignerExportWidget> #endif class QDESIGNER_WIDGET_EXPORT GaugeProgress : public QWidget #else class GaugeProgress : public QWidget #endif { Q_OBJECT Q_ENUMS(PointerStyle) Q_PROPERTY(double minValue READ getMinValue WRITE setMinValue) Q_PROPERTY(double maxValue READ getMaxValue WRITE setMaxValue) Q_PROPERTY(double value READ getValue WRITE setValue) Q_PROPERTY(int precision READ getPrecision WRITE setPrecision) Q_PROPERTY(int startAngle READ getStartAngle WRITE setStartAngle) Q_PROPERTY(int endAngle READ getEndAngle WRITE setEndAngle) Q_PROPERTY(QColor bgColor READ getBgColor WRITE setBgColor) Q_PROPERTY(QColor progressColor READ getProgressColor WRITE setProgressColor) Q_PROPERTY(QColor progressBgColor READ getProgressBgColor WRITE setProgressBgColor) Q_PROPERTY(QColor circleColorStart READ getCircleColorStart WRITE setCircleColorStart) Q_PROPERTY(QColor circleColorEnd READ getCircleColorEnd WRITE setCircleColorEnd) Q_PROPERTY(QColor textColor READ getTextColor WRITE setTextColor) Q_PROPERTY(bool showPointer READ getShowPointer WRITE setShowPointer) Q_PROPERTY(bool showValue READ getShowValue WRITE setShowValue) Q_PROPERTY(PointerStyle pointerStyle READ getPointerStyle WRITE setPointerStyle) public: enum PointerStyle { PointerStyle_Circle = 0, //圆形指示器 PointerStyle_Indicator = 1, //指针指示器 PointerStyle_IndicatorR = 2, //圆角指针指示器 PointerStyle_Triangle = 3 //三角形指示器 }; explicit GaugeProgress(QWidget *parent = 0); ~GaugeProgress(); protected: void enterEvent(QEvent *); void leaveEvent(QEvent *); void mousePressEvent(QMouseEvent *); void mouseReleaseEvent(QMouseEvent *); void mouseMoveEvent(QMouseEvent *); void paintEvent(QPaintEvent *); void drawBg(QPainter *painter); void drawColorPie(QPainter *painter); void drawCoverCircle(QPainter *painter); void drawCircle(QPainter *painter); void drawPointerCircle(QPainter *painter); void drawPointerIndicator(QPainter *painter); void drawPointerIndicatorR(QPainter *painter); void drawPointerTriangle(QPainter *painter); void drawValue(QPainter *painter); private: double minValue; //最小值 double maxValue; //最大值 double value; //目标值 int precision; //精确度,小数点后几位 int startAngle; //开始旋转角度 int endAngle; //结束旋转角度 QColor bgColor; //背景色 QColor progressColor; //当前进度颜色 QColor progressBgColor; //进度背景颜色 QColor circleColorStart; //中间圆渐变开始颜色 QColor circleColorEnd; //中间圆渐变结束颜色 QColor textColor; //文字颜色 bool showPointer; //是否显示指示器 bool showValue; //是否显示当前值 PointerStyle pointerStyle; //指针样式 bool hover; //是否鼠标悬停 int radiusCoverCircle; //覆盖圆半径 int radiusCircle; //中间圆半径 QPropertyAnimation *animation; //动画对象 private slots: void setEasingCurve(); void updateRadius(QVariant radius); private: //鼠标是否按下 bool pressed; //根据鼠标按下的坐标设置当前按下坐标处的值 void setPressedValue(QPointF pressedPoint); public: double getMinValue() const; double getMaxValue() const; double getValue() const; int getPrecision() const; int getStartAngle() const; int getEndAngle() const; QColor getBgColor() const; QColor getProgressColor() const; QColor getProgressBgColor() const; QColor getCircleColorStart() const; QColor getCircleColorEnd() const; QColor getTextColor() const; bool getShowPointer() const; bool getShowValue() const; PointerStyle getPointerStyle() const; QSize sizeHint() const; QSize minimumSizeHint() const; public Q_SLOTS: //设置范围值 void setRange(double minValue, double maxValue); void setRange(int minValue, int maxValue); //设置最大最小值 void setMinValue(double minValue); void setMaxValue(double maxValue); //设置目标值 void setValue(double value); void setValue(int value); //设置精确度 void setPrecision(int precision); //设置开始旋转角度 void setStartAngle(int startAngle); //设置结束旋转角度 void setEndAngle(int endAngle); //设置背景色 void setBgColor(const QColor &bgColor); //设置进度颜色 void setProgressColor(const QColor &progressColor); void setProgressBgColor(const QColor &progressBgColor); //设置中间圆颜色 void setCircleColorStart(const QColor &circleColorStart); void setCircleColorEnd(const QColor &circleColorEnd); //设置文本颜色 void setTextColor(const QColor &textColor); //设置是否显示指示器 void setShowPointer(bool showPointer); //设置是否显示当前值 void setShowValue(bool showValue); //设置指针样式 void setPointerStyle(const PointerStyle &pointerStyle); Q_SIGNALS: void valueChanged(int value); }; #endif // GAUGEPROGRESS_H
void GaugeProgress::paintEvent(QPaintEvent *) { int width = this->width(); int height = this->height(); int side = qMin(width, height); //绘制准备工做,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); //绘制背景 drawBg(&painter); //绘制饼圆 drawColorPie(&painter); //绘制覆盖圆 用以遮住饼圆多余部分 drawCoverCircle(&painter); //绘制中心圆 drawCircle(&painter); //根据指示器形状绘制指示器 if (pointerStyle == PointerStyle_Circle) { drawPointerCircle(&painter); } else if (pointerStyle == PointerStyle_Indicator) { drawPointerIndicator(&painter); } else if (pointerStyle == PointerStyle_IndicatorR) { drawPointerIndicatorR(&painter); } else if (pointerStyle == PointerStyle_Triangle) { drawPointerTriangle(&painter); } //绘制当前值 drawValue(&painter); } void GaugeProgress::drawBg(QPainter *painter) { int radius = 99; painter->save(); painter->setPen(Qt::NoPen); painter->setBrush(bgColor); painter->drawEllipse(-radius, -radius, radius * 2, radius * 2); painter->restore(); } void GaugeProgress::drawColorPie(QPainter *painter) { int radius = 95; painter->save(); painter->setPen(Qt::NoPen); QRectF rect(-radius, -radius, radius * 2, radius * 2); //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 - startAngle - endAngle; double angleCurrent = angleAll * ((value - minValue) / (maxValue - minValue)); double angleOther = angleAll - angleCurrent; //绘制当前值饼圆 painter->setBrush(progressColor); painter->drawPie(rect, (270 - startAngle - angleCurrent) * 16, angleCurrent * 16); //绘制剩余值饼圆 painter->setBrush(progressBgColor); painter->drawPie(rect, (270 - startAngle - angleCurrent - angleOther) * 16, angleOther * 16); painter->restore(); } void GaugeProgress::drawCoverCircle(QPainter *painter) { int radius = radiusCoverCircle; painter->save(); painter->setPen(Qt::NoPen); painter->setBrush(bgColor); painter->drawEllipse(-radius, -radius, radius * 2, radius * 2); painter->restore(); } void GaugeProgress::drawCircle(QPainter *painter) { int radius = radiusCircle; painter->save(); painter->setPen(Qt::NoPen); QLinearGradient bgGradient(0, -radius, 0, radius); bgGradient.setColorAt(0.0, circleColorStart); bgGradient.setColorAt(1.0, circleColorEnd); painter->setBrush(bgGradient); painter->drawEllipse(-radius, -radius, radius * 2, radius * 2); painter->restore(); } void GaugeProgress::drawPointerCircle(QPainter *painter) { if (!showPointer) { return; } int radius = 15; int offset = radiusCircle - 60; painter->save(); painter->setPen(Qt::NoPen); painter->rotate(startAngle); double degRotate = (360.0 - startAngle - endAngle) / (maxValue - minValue) * (value - minValue); painter->rotate(degRotate); painter->setBrush(progressColor); painter->drawEllipse(-radius, radius + offset, radius * 2, radius * 2); painter->restore(); } void GaugeProgress::drawPointerIndicator(QPainter *painter) { if (!showPointer) { return; } int radius = radiusCircle - 15; painter->save(); painter->setPen(Qt::NoPen); painter->setBrush(progressColor); QPolygon pts; pts.setPoints(3, -8, 0, 8, 0, 0, radius); painter->rotate(startAngle); double degRotate = (360.0 - startAngle - endAngle) / (maxValue - minValue) * (value - minValue); painter->rotate(degRotate); painter->drawConvexPolygon(pts); //绘制中心圆点 radius = radius / 4; painter->drawEllipse(-radius, -radius, radius * 2, radius * 2); painter->restore(); } void GaugeProgress::drawPointerIndicatorR(QPainter *painter) { if (!showPointer) { return; } int radius = radiusCircle - 15; painter->save(); QPen pen; pen.setWidth(1); pen.setColor(progressColor); painter->setPen(pen); painter->setBrush(progressColor); QPolygon pts; pts.setPoints(3, -8, 0, 8, 0, 0, radius); painter->rotate(startAngle); double degRotate = (360.0 - startAngle - endAngle) / (maxValue - minValue) * (value - minValue); painter->rotate(degRotate); painter->drawConvexPolygon(pts); //增长绘制圆角直线,与以前三角形重叠,造成圆角指针 pen.setCapStyle(Qt::RoundCap); pen.setWidthF(4); painter->setPen(pen); painter->drawLine(0, 0, 0, radius); //绘制中心圆点 radius = radius / 4; painter->drawEllipse(-radius, -radius, radius * 2, radius * 2); painter->restore(); } void GaugeProgress::drawPointerTriangle(QPainter *painter) { if (!showPointer) { return; } int radius = 20; int offset = radiusCircle - 25; painter->save(); painter->setPen(Qt::NoPen); painter->setBrush(progressColor); QPolygon pts; pts.setPoints(3, -radius / 2, offset, radius / 2, offset, 0, radius + offset); painter->rotate(startAngle); double degRotate = (360.0 - startAngle - endAngle) / (maxValue - minValue) * (value - minValue); painter->rotate(degRotate); painter->drawConvexPolygon(pts); painter->restore(); } void GaugeProgress::drawValue(QPainter *painter) { if (!showValue) { return; } int radius = 100; painter->save(); painter->setPen(textColor); QFont font; font.setPixelSize(showPointer ? radius - 50 : radius - 15); font.setBold(true); painter->setFont(font); QRectF textRect(-radius, -radius, radius * 2, radius * 2); QString strValue = QString("%1").arg((double)value, 0, 'f', precision); painter->drawText(textRect, Qt::AlignCenter, strValue); painter->restore(); }