Qt编写自定义控件49-飞机仪表盘 - QTCN开发网

#ifndef GAUGEPLANE_H
#define GAUGEPLANE_H

/**
* 飞机姿势仪表盘控件作者:feiyangqingyun(QQ:517216493) 2017-12-21
* 1:可设置外边框渐变颜色
* 2:可设置里边框渐变颜色
* 3:可设置主背景颜色+遮罩层颜色+刻度尺颜色
* 4:可设置线条颜色+文字颜色+指针颜色+遥感句柄颜色
* 5:可设置旋转角度
* 6:可设置滚动值
*/

#include <QWidget>

#ifdef quc
#if (QT_VERSION < QT_VERSION_CHECK(5,7,0))
#include <QtDesigner/QDesignerExportWidget>
#else
#include <QtUiPlugin/QDesignerExportWidget>
#endif

class QDESIGNER_WIDGET_EXPORT GaugePlane : public QWidget
#else
class GaugePlane : public QWidget
#endif

{
    Q_OBJECT
    Q_PROPERTY(QColor borderOutColorStart READ getBorderOutColorStart WRITE setBorderOutColorStart)
    Q_PROPERTY(QColor borderOutColorEnd READ getBorderOutColorEnd WRITE setBorderOutColorEnd)
    Q_PROPERTY(QColor borderInColorStart READ getBorderInColorStart WRITE setBorderInColorStart)
    Q_PROPERTY(QColor borderInColorEnd READ getBorderInColorEnd WRITE setBorderInColorEnd)

    Q_PROPERTY(QColor bgColor READ getBgColor WRITE setBgColor)
    Q_PROPERTY(QColor planeColor READ getPlaneColor WRITE setPlaneColor)
    Q_PROPERTY(QColor glassColor READ getGlassColor WRITE setGlassColor)
    Q_PROPERTY(QColor scaleColor READ getScaleColor WRITE setScaleColor)
    Q_PROPERTY(QColor lineColor READ getLineColor WRITE setLineColor)
    Q_PROPERTY(QColor textColor READ getTextColor WRITE setTextColor)
    Q_PROPERTY(QColor pointerColor READ getPointerColor WRITE setPointerColor)
    Q_PROPERTY(QColor handleColor READ getHandleColor WRITE setHandleColor)

    Q_PROPERTY(int degValue READ getDegValue WRITE setDegValue)
    Q_PROPERTY(int rollValue READ getRollValue WRITE setRollValue)

public:
    explicit GaugePlane(QWidget *parent = 0);

protected:
    void paintEvent(QPaintEvent *);
    void drawBorderOut(QPainter *painter);
    void drawBorderIn(QPainter *painter);
    void drawBg(QPainter *painter);
    void drawPlane(QPainter *painter);
    void drawGlass(QPainter *painter);
    void drawScale(QPainter *painter);
    void drawLine(QPainter *painter);
    void drawPointer(QPainter *painter);
    void drawHandle(QPainter *painter);

private:
    QColor borderOutColorStart;     //外边框渐变开始颜色
    QColor borderOutColorEnd;       //外边框渐变结束颜色
    QColor borderInColorStart;      //里边框渐变开始颜色
    QColor borderInColorEnd;        //里边框渐变结束颜色

    QColor bgColor;                 //背景颜色
    QColor planeColor;              //姿态仪背景
    QColor glassColor;              //遮罩层颜色
    QColor scaleColor;              //刻度尺颜色
    QColor lineColor;               //线条颜色
    QColor textColor;               //文字颜色
    QColor pointerColor;            //指针颜色
    QColor handleColor;             //手柄颜色

    int degValue;                   //旋转角度
    int rollValue;                  //滚动值

public:
    QColor getBorderOutColorStart() const;
    QColor getBorderOutColorEnd()   const;
    QColor getBorderInColorStart()  const;
    QColor getBorderInColorEnd()    const;

    QColor getBgColor()             const;
    QColor getPlaneColor()          const;
    QColor getGlassColor()          const;
    QColor getScaleColor()          const;
    QColor getLineColor()           const;
    QColor getTextColor()           const;
    QColor getPointerColor()        const;
    QColor getHandleColor()         const;

    int getDegValue()               const;
    int getRollValue()              const;

    QSize sizeHint()                const;
    QSize minimumSizeHint()         const;

public Q_SLOTS:
    //设置外边框渐变颜色
    void setBorderOutColorStart(const QColor &borderOutColorStart);
    void setBorderOutColorEnd(const QColor &borderOutColorEnd);

    //设置里边框渐变颜色
    void setBorderInColorStart(const QColor &borderInColorStart);
    void setBorderInColorEnd(const QColor &borderInColorEnd);

    //设置背景色
    void setBgColor(const QColor &bgColor);

    //设置姿态仪背景
    void setPlaneColor(const QColor &planeColor);

    //设置遮罩层颜色
    void setGlassColor(const QColor &glassColor);

    //设置刻度尺颜色
    void setScaleColor(const QColor &scaleColor);

    //设置线条颜色
    void setLineColor(const QColor &lineColor);

    //设置文字颜色
    void setTextColor(const QColor &textColor);

    //设置指针颜色
    void setPointerColor(const QColor &pointerColor);

    //设置手柄颜色
    void setHandleColor(const QColor &handleColor);

    //设置旋转角度值
    void setDegValue(int degValue);
    //设置前进旋转值
    void setRollValue(int rollValue);
};

#endif // GAUGEPLANE_H

void GaugePlane::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);

    //绘制外边框
    drawBorderOut(&painter);
    //绘制内边框
    drawBorderIn(&painter);
    //绘制背景
    drawBg(&painter);
    //绘制姿势仪背景
    drawPlane(&painter);
    //绘制玻璃遮罩层
    drawGlass(&painter);
    //绘制刻度尺
    drawScale(&painter);
    //绘制线条
    drawLine(&painter);
    //绘制指针
    drawPointer(&painter);
    //绘制手柄
    drawHandle(&painter);
}

void GaugePlane::drawBorderOut(QPainter *painter)
{
    int radius = 99;
    painter->save();
    painter->setPen(Qt::NoPen);
    QLinearGradient borderGradient(0, -radius, 0, radius);
    borderGradient.setColorAt(0, borderOutColorStart);
    borderGradient.setColorAt(1, borderOutColorEnd);
    painter->setBrush(borderGradient);
    painter->drawEllipse(-radius, -radius, radius * 2, radius * 2);
    painter->restore();
}

void GaugePlane::drawBorderIn(QPainter *painter)
{
    int radius = 93;
    painter->save();
    painter->setPen(Qt::NoPen);
    QLinearGradient borderGradient(0, -radius, 0, radius);
    borderGradient.setColorAt(0, borderInColorStart);
    borderGradient.setColorAt(1, borderInColorEnd);
    painter->setBrush(borderGradient);
    painter->drawEllipse(-radius, -radius, radius * 2, radius * 2);
    painter->restore();
}

void GaugePlane::drawBg(QPainter *painter)
{
    int radius = 90;
    painter->save();
    painter->setPen(Qt::NoPen);
    QLinearGradient borderGradient(0, -radius, 0, radius);
    bgColor.setAlpha(255);
    borderGradient.setColorAt(0, bgColor);
    bgColor.setAlpha(150);
    borderGradient.setColorAt(1, bgColor);
    painter->setBrush(borderGradient);
    painter->drawEllipse(-radius, -radius, radius * 2, radius * 2);

    painter->restore();
}

void GaugePlane::drawPlane(QPainter *painter)
{
    double radius = 90;
    painter->save();
    painter->rotate(degValue);
    painter->setPen(Qt::NoPen);
    painter->setBrush(planeColor);
    QRect rect(-radius, -radius, radius * 2, radius * 2);

#if 0
    painter->drawPie(rect, 0, -16 * 180);
#else
    float offset = -(rollValue * radius / 100);
    float startAngle = 180 + offset;
    float endAngle = offset;
    float span = endAngle + startAngle;
    painter->drawChord(rect, -16 * startAngle, 16 * span);
#endif
    painter->restore();
}