飞行仪表是测定和表示飞机数据的工具,飞机中必不可少的一部分,飞行员根据飞行仪表表示的数据才能正确地做出判断。一般飞机仪表包括高度表+空速表+垂直速率表+姿态仪+航向指示表+转弯协调表。
这次要绘制的是其中的姿势仪,显示飞机相对于地平线的姿态,看姿态仪,飞行员能判断飞机姿态为偏左偏右,及偏上和偏下。姿态仪作用原理为一高度旋转的陀螺,不论飞机的姿态如何变化,此陀螺的定轴性在空间保持相同,因而能显示出飞机的俯仰及偏左偏右的姿态。姿态仪是仪表飞行时的重要仪表,在能见度差的飞行天气中,失去或不相信姿态仪,飞行员极易进入空间迷失。
#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();
}
原创声明:本文系作者授权腾讯云开发者社区发表,未经许可,不得转载。
如有侵权,请联系 cloudcommunity@tencent.com 删除。
原创声明:本文系作者授权腾讯云开发者社区发表,未经许可,不得转载。
如有侵权,请联系 cloudcommunity@tencent.com 删除。