lcdnumber.7z

#pragma execution_character_set("utf-8") #include "lcdnumber.h" #include "qpainter.h" #include "qtimer.h" #include "qdebug.h" LcdNumber::LcdNumber(QWidget *parent) : QWidget(parent) { number = 0; space = 20; bgColorStart = QColor(100, 100, 100); bgColorEnd = QColor(60, 60, 60); numberColorStart = QColor(100, 184, 255); numberColorEnd = QColor(79, 148, 205); } void LcdNumber::paintEvent(QPaintEvent *) { //绘制准备工作,启用反锯齿 QPainter painter(this); painter.setRenderHints(QPainter::Antialiasing | QPainter::TextAntialiasing); //绘制背景 drawBg(&painter); //绘制数字 drawNumber(&painter); } void LcdNumber::drawBg(QPainter *painter) { painter->save(); painter->setPen(Qt::NoPen); QLinearGradient bgGradient(QPointF(0, 0), QPointF(0, height())); bgGradient.setColorAt(0.0, bgColorStart); bgGradient.setColorAt(1.0, bgColorEnd); painter->setBrush(bgGradient); painter->drawRect(rect()); painter->restore(); } void LcdNumber::drawNumber(QPainter *painter) { painter->save(); painter->setPen(Qt::NoPen); //找出六个对应点 QPointF topLeft(space, space); QPointF topRight(width() - space, space); QPointF midLeft(space, height() / 2); QPointF midRight(width() - space, height() / 2); QPointF bottomLeft(space, height() - space); QPointF bottomRight(width() - space, height() - space); //形状宽度及凸起部分高度 double recWidth = width() / 10; double recHeight = height() / 30; double recSpace = width() / 30; //逐个将每个形状的点集合添加,每个数码管都有7个形状,每个形状有4-6个点 //左侧上部分形状坐标集合 QVector<QPointF> topLeftRectVec; topLeftRectVec.append(QPointF(topLeft.x(), topLeft.y())); topLeftRectVec.append(QPointF(topLeft.x() + recWidth, topLeft.y() + recHeight * 2)); topLeftRectVec.append(QPointF(midLeft.x() + recWidth, midLeft.y() - recHeight - recSpace)); topLeftRectVec.append(QPointF(midLeft.x() + recWidth / 2, midLeft.y() - recSpace)); topLeftRectVec.append(QPointF(midLeft.x(), midLeft.y() - recHeight - recSpace)); //顶部形状坐标集合 QVector<QPointF> topRectVec; topRectVec.append(QPointF(topLeft.x() + recSpace, topLeft.y())); topRectVec.append(QPointF(topLeft.x() + recWidth + recSpace, topLeft.y() + recHeight * 2)); topRectVec.append(QPointF(topRight.x() - recWidth - recSpace, topRight.y() + recHeight * 2)); topRectVec.append(QPointF(topRight.x() - recSpace, topRight.y())); //右侧上部分形状坐标集合 QVector<QPointF> topRightRectVec; topRightRectVec.append(QPointF(topRight.x() - recWidth, topRight.y() + recHeight * 2)); topRightRectVec.append(QPointF(topRight.x(), topRight.y())); topRightRectVec.append(QPointF(midRight.x(), midRight.y() - recHeight - recSpace)); topRightRectVec.append(QPointF(midRight.x() - recWidth / 2, midRight.y() - recSpace)); topRightRectVec.append(QPointF(midRight.x() - recWidth, midRight.y() - recHeight - recSpace)); //中间部分形状坐标集合 QVector<QPointF> midRectVec; midRectVec.append(QPointF(midLeft.x() + recWidth / 2, midLeft.y())); midRectVec.append(QPointF(midLeft.x() + recWidth, midLeft.y() - recHeight)); midRectVec.append(QPointF(midRight.x() - recWidth, midRight.y() - recHeight)); midRectVec.append(QPointF(midRight.x() - recWidth / 2, midRight.y())); midRectVec.append(QPointF(midRight.x() - recWidth, midRight.y() + recHeight)); midRectVec.append(QPointF(midLeft.x() + recWidth, midRight.y() + recHeight)); //左侧下部分形状坐标集合 QVector<QPointF> bottomLeftRectVec; bottomLeftRectVec.append(QPointF(midLeft.x(), midLeft.y() + recHeight + recSpace)); bottomLeftRectVec.append(QPointF(midLeft.x() + recWidth / 2, midLeft.y() + recSpace)); bottomLeftRectVec.append(QPointF(midLeft.x() + recWidth, midLeft.y() + recHeight + recSpace)); bottomLeftRectVec.append(QPointF(bottomLeft.x() + recWidth, bottomLeft.y() - recHeight * 2)); bottomLeftRectVec.append(QPointF(bottomLeft.x(), bottomLeft.y())); //底部形状坐标集合 QVector<QPointF> bottomRectVec; bottomRectVec.append(QPointF(bottomLeft.x() + recSpace, bottomLeft.y())); bottomRectVec.append(QPointF(bottomLeft.x() + recWidth + recSpace, bottomRight.y() - recHeight * 2)); bottomRectVec.append(QPointF(bottomRight.x() - recWidth - recSpace, bottomRight.y() - recHeight * 2)); bottomRectVec.append(QPointF(bottomRight.x() - recSpace, bottomRight.y())); //右侧下部分形状坐标集合 QVector<QPointF> bottomRightRectVec; bottomRightRectVec.append(QPointF(midRight.x() - recWidth, midRight.y() + recHeight + recSpace)); bottomRightRectVec.append(QPointF(midRight.x() - recWidth / 2, midRight.y() + recSpace)); bottomRightRectVec.append(QPointF(midRight.x(), midRight.y() + recHeight + recSpace)); bottomRightRectVec.append(QPointF(bottomRight.x(), bottomRight.y())); bottomRightRectVec.append(QPointF(bottomRight.x() - recWidth, bottomRight.y() - recHeight * 2)); //颜色渐变 QLinearGradient numberGradient(QPointF(0, 0), QPointF(0, height())); numberGradient.setColorAt(0.0, numberColorStart); numberGradient.setColorAt(1.0, numberColorEnd); painter->setBrush(numberGradient); //根据值绘制形状 switch (number) { case 0: painter->drawPolygon(topLeftRectVec); painter->drawPolygon(topRectVec); painter->drawPolygon(topRightRectVec); //painter->drawPolygon(midRectVec); painter->drawPolygon(bottomLeftRectVec); painter->drawPolygon(bottomRectVec); painter->drawPolygon(bottomRightRectVec); break; case 1: //painter->drawPolygon(topLeftRectVec); //painter->drawPolygon(topRectVec); painter->drawPolygon(topRightRectVec); //painter->drawPolygon(midRectVec); //painter->drawPolygon(bottomLeftRectVec); //painter->drawPolygon(bottomRectVec); painter->drawPolygon(bottomRightRectVec); break; case 2: //painter->drawPolygon(topLeftRectVec); painter->drawPolygon(topRectVec); painter->drawPolygon(topRightRectVec); painter->drawPolygon(midRectVec); painter->drawPolygon(bottomLeftRectVec); painter->drawPolygon(bottomRectVec); //painter->drawPolygon(bottomRightRectVec); break; case 3: //painter->drawPolygon(topLeftRectVec); painter->drawPolygon(topRectVec); painter->drawPolygon(topRightRectVec); painter->drawPolygon(midRectVec); //painter->drawPolygon(bottomLeftRectVec); painter->drawPolygon(bottomRectVec); painter->drawPolygon(bottomRightRectVec); break; case 4: painter->drawPolygon(topLeftRectVec); //painter->drawPolygon(topRectVec); painter->drawPolygon(topRightRectVec); painter->drawPolygon(midRectVec); //painter->drawPolygon(bottomLeftRectVec); //painter->drawPolygon(bottomRectVec); painter->drawPolygon(bottomRightRectVec); break; case 5: painter->drawPolygon(topLeftRectVec); painter->drawPolygon(topRectVec); //painter->drawPolygon(topRightRectVec); painter->drawPolygon(midRectVec); //painter->drawPolygon(bottomLeftRectVec); painter->drawPolygon(bottomRectVec); painter->drawPolygon(bottomRightRectVec); break; case 6: painter->drawPolygon(topLeftRectVec); painter->drawPolygon(topRectVec); //painter->drawPolygon(topRightRectVec); painter->drawPolygon(midRectVec); painter->drawPolygon(bottomLeft