164 lines
3.6 KiB
C++
164 lines
3.6 KiB
C++
#include "batt.h"
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batt::batt(QWidget *parent) : QWidget(parent)
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{
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setContentsMargins(0,0,0,0);
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borderWidth = 4;
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headWidth = 20;
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value = 50;
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minValue = 0;
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maxValue = 100;
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alarmValue = 20;
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borderRadio = 10;
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drawInRadio = 8;
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borderColor = QColor(96, 96, 96);
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}
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void batt::paintEvent(QPaintEvent *)
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{
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QPainter painter(this);
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painter.setRenderHints(QPainter::Antialiasing | QPainter::TextAntialiasing);
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drawBorder(&painter);
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drawRightHead(&painter);
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drawBackground(&painter);
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drawText(&painter);
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}
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void batt::resizeEvent(QResizeEvent *)
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{
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}
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// 画边框
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void batt::drawBorder(QPainter *painter)
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{
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painter->save();
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painter->setPen(QPen(borderColor,borderWidth));
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borderRect = QRect(borderWidth,borderWidth,width()-2*borderWidth-headWidth,height()-2*borderWidth);
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painter->drawRoundedRect(borderRect,borderRadio,borderRadio);
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painter->restore();
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}
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// 画右边电池头部
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void batt::drawRightHead(QPainter *painter)
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{
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painter->save();
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double headHeight = height()/2;
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painter->setPen(Qt::NoPen);
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painter->setBrush(QColor(96, 96, 96));
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QRectF headRect = QRectF(width()-headWidth-borderWidth/2,height()/2-headHeight/2,headWidth / 1.75,headHeight);
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painter->drawRect(headRect);
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painter->restore();
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}
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// 画数值对应颜色
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void batt::drawBackground(QPainter *painter)
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{
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painter->save();
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double batteryWidth = width()-headWidth-3*borderWidth; // 电池宽度
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double bgWidth= value * batteryWidth / (maxValue-minValue); // 背景绘制宽度
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QLinearGradient batteryGradient(QPointF(0, 0), QPointF(borderWidth+bgWidth,height()));
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if (value <= alarmValue) {
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batteryGradient.setColorAt(0.0, QColor(255, 26, 0));
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batteryGradient.setColorAt(1.0, QColor(255, 0, 102));
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} else {
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batteryGradient.setColorAt(0.0, QColor(0, 255, 26));
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batteryGradient.setColorAt(1.0, QColor(102, 255, 0));
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}
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painter->setBrush(QBrush(batteryGradient));
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painter->setPen(Qt::NoPen);
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QRectF rectBg = QRectF(borderWidth+borderWidth/2,borderWidth+borderWidth/2,bgWidth,height()-3*borderWidth);
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painter->drawRoundedRect(rectBg,drawInRadio,drawInRadio);
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painter->restore();
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}
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// 画百分比数值
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void batt::drawText(QPainter *painter)
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{
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painter->save();
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QString value_str = QString("%1%").arg(value);
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painter->setPen(QPen(QColor(Qt::black)));
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double w = qMin(borderRect.width(),borderRect.height());
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// 文字大小自适应 90为控件初始高度，30位字体默认大小
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int fontSize = 30 * w / 90;
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painter->setFont(QFont("Microsoft YaHei UI",fontSize));
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painter->drawText(borderRect,value_str,QTextOption(Qt::AlignHCenter | Qt::AlignVCenter));
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painter->restore();
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}
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// 设置当前值
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void batt::setValue(int value)
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{
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this->value = value;
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update();
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}
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void batt::setMinValue(int min)
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{
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minValue = min;
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update();
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}
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void batt::setMaxValue(int max)
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{
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maxValue = max;
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update();
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}
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void batt::setRange(int min, int max)
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{
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minValue = min;
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maxValue = max;
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update();
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}
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void batt::setBorderWidth(int width)
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{
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borderWidth = width;
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update();
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}
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void batt::setBorderRadio(int radio)
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{
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borderRadio = radio;
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update();
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}
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void batt::setInRadio(int radio)
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{
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drawInRadio = radio;
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update();
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}
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void batt::setAlarmValue(int alarm)
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{
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alarmValue = alarm;
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update();
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}
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void batt::setBorderColor(QColor color)
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{
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borderColor = color;
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update();
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}
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int batt::getValue()
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{
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return value;
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}
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int batt::getMinValue()
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{
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return minValue;
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}
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int batt::getMaxValue()
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{
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return maxValue;
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}
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int batt::getAlarmValue()
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{
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return alarmValue;
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}
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