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QuakeGod
2023-05-30 acd576fbf6ca6086455d7f82140dd495237c6803
提交 | 用户 | age
d3687b 1 #include "qmyroundindicator.h"
Q 2 #include <QPen>
3 #include <QBrush>
4 #include <QPainter>
5 #include <QTimer>
6
7 QmyRoundIndicator::QmyRoundIndicator(QWidget *parent) : QFrame(parent)
8 {
9     QTimer* timer = new QTimer(this);
10         timer->start(50);
11         connect(timer,&QTimer::timeout,this,&QmyRoundIndicator::OnTimerd);
12 }
13
14
15 void QmyRoundIndicator::OnTimerd()
16 {
17     nCount++;
18     update();
19 }
20
21 void QmyRoundIndicator::paintEvent(QPaintEvent *event)
22 {
23     //控件的绘制工具，通过该工具我们可以进行常用的绘制了
24     QPainter painter(this);
25      painter.setRenderHint(QPainter::Antialiasing);
26
27         //取得画布大小和中心方形。
28      int w = this->rect().width();
29      int h = this->rect().height();
30      if (w!=oldw) {displayPosition=0; oldw=w;}
31      int s;
32      int wmargin=0;
33      int hmargin=0;
34      if (w>h) {
35          s= h;
36          wmargin=(w-s)/2;
37
38      }else{
39          s= w;
40          hmargin=(h-s)/2;
41      }
42      //画边框
43      QPen pen0(QColor("#4D9CF8"));
44      painter.setPen(pen0);
45      painter.drawRoundRect(this->rect(),5,5);
46
47       int thick =  s/16;
48
49      QPen pen1(QColor(80,80,80));
50
51      //绘制弧线的背景
52       pen1.setWidth(thick);
53       pen1.setCapStyle(Qt::RoundCap);
54       //      pen.setColor(QColor("#4D9CF8"));
55       painter.setPen(pen1);
56
57      QRectF in_rectangle(wmargin+10, hmargin+s/4, s-20, s-20);
58      int in_startAngle = (0) * 16;
59      int in_spanAngle = (180)*16;
60      painter.drawArc(in_rectangle,in_startAngle,in_spanAngle);
61
62
63 //     in_startAngle = (nOffset + 90+270) * 16;
64 //     in_spanAngle = (45)*16;
65 //     painter.drawArc(in_rectangle,in_startAngle,in_spanAngle);
66
67      int nOffset = nCount*5 % 180;
68
69 //     position = nOffset *range /180;
70      float diff = position - displayPosition;
71      if (diff > 5)  {displayPosition += 5; }
72      else if (diff <=5 && diff >= -5) {displayPosition = position;}
73      else if (diff <-5) {displayPosition -=5;}
74
75      //画目标刻度
76       target;
77       QPen pen22(QColor("#ffffff"));
78       pen22.setWidth(thick+2);
79       pen22.setCapStyle(Qt::RoundCap);
80
81       QRectF tar_rectangle1(wmargin+10, hmargin+s/4, s-20, s-20);
82       int tar_startAngle = 180*16-1*((target / range)*180)*16 -1 ;
83       int tar_spanAngle = 1;
84       painter.setPen(pen22);
85       painter.drawArc(tar_rectangle1,tar_startAngle,tar_spanAngle);
86       // 目标位置;
87
88       //画当前值
89      QPen pen2(QColor("#4D9CF8"));
90      pen2.setWidth(thick);
91      pen2.setCapStyle(Qt::RoundCap);
92
93      QRectF sec_rectangle(wmargin+10, hmargin+s/4, s-20, s-20);
94      int sec_startAngle = 180 * 16;
95      int sec_spanAngle = -1*((displayPosition / range)*180)*16;
96
97      QConicalGradient gradient;
98      gradient.setCenter(sec_rectangle.center());
99      gradient.setAngle(190);
100      gradient.setColorAt(0, color2);
101      gradient.setColorAt(0.5, color2);
102      gradient.setColorAt(1, color1);
103
104
105  //    int arcLengthApproximation = m_width + m_width / 3;
106      QPen pen3(QBrush(gradient), thick);
107      pen3.setCapStyle(Qt::RoundCap);
108      painter.setPen(pen3);
109      painter.drawArc(sec_rectangle,sec_startAngle,sec_spanAngle);
110
111      //绘制文本，绘制白色的文字
112      painter.setPen(QPen(QColor(255,255,255)));
113      QString s1;
114      s1=sTitle;
115      //显示标题
116      QRect rect2(wmargin + 20, hmargin +10, s-40,s/8);
117      painter.setFont(QFont("Microsoft YaHei",s/12));
118   //   painter.drawText(this->rect(),s1);
119     painter.drawText(rect2,Qt::AlignCenter,s1);
120      //显示前后刻度
121     painter.setFont(QFont("Microsoft YaHei",s/18));
122     s1="0";
123  //   painter.drawText(this->rect(),s1);
124     rect2.setRect(wmargin,hmargin+s*3/4+thick/2,20,s/16);
125    painter.drawText(rect2,Qt::AlignCenter,s1);
126
127    s1=QString::number(range);
128 //   painter.drawText(this->rect(),s1);
129    rect2.setRect(wmargin+s-50,hmargin+s*3/4+thick/2,80,s/16);
130   painter.drawText(rect2,Qt::AlignCenter,s1);
131
132      //显示当前数量
133   painter.setFont(QFont("Microsoft YaHei",s/8));
134   s1=QString::number(displayPosition);
135 //   painter.drawText(this->rect(),s1);
136   rect2.setRect(wmargin+10,hmargin+10,s-20,s-20);
137  painter.drawText(rect2,Qt::AlignCenter,s1);
138      //显示单位
139  painter.setFont(QFont("Microsoft YaHei",s/16));
140  s1=sUnit;
141 //   painter.drawText(this->rect(),s1);
142  rect2.setRect(wmargin+10,hmargin+10+s/5,s-20,s-20);
143 painter.drawText(rect2,Qt::AlignCenter,s1);
144
145     // 显示目标
146     //画目标线
147
148     //写目标字
149
150     return;
151     //   QRect rect2(wmargin + 20, hmargin +20, s-40,s-40);
152
153      //添加绘制的字体和字号
154      s1=QString::number(int(displayPosition));
155      int l = s1.length();
156      double fr = sqrt(l*l + 4);
157      painter.setFont(QFont("Microsoft YaHei",(s-20)/fr));
158   //   painter.drawText(this->rect(),s1);
159     painter.drawText(rect2,Qt::AlignCenter,s1);
160
161 }
162
163 void QmyRoundIndicator::SetRange(int n)
164 {
165     range=n;
166 }
167 void QmyRoundIndicator::SetValue(float n)
168 {
169     position=n;
170     update();
171 }
172 void QmyRoundIndicator::SetTarget(float n)
173 {
174     target=n;
175     update();
176 }
177 void QmyRoundIndicator::SetTitle(QString title)
178 {
179     sTitle = title;
180 }
181 void QmyRoundIndicator::SetUnit(QString unit)
182 {
183     sUnit = unit;
184 }
185 void QmyRoundIndicator::SetColor(QColor Start,QColor End)
186 {
187     color1 = Start;
188     color2 = End;
189 }
190