基于Qt和C++实现的高亮发光按钮控件+源码

#pragma execution_character_set("utf-8") #include "lightbutton.h" #include "qpainter.h" #include "qpainterpath.h" #include "qevent.h" #include "qtimer.h" #include "qdebug.h" LightButton::LightButton(QWidget *parent) : QWidget(parent) { text = ""; textColor = QColor(255, 255, 255); alarmColor = QColor(255, 107, 107); normalColor = QColor(10, 10, 10); borderOutColorStart = QColor(255, 255, 255); borderOutColorEnd = QColor(166, 166, 166); borderInColorStart = QColor(166, 166, 166); borderInColorEnd = QColor(255, 255, 255); bgColor = QColor(100, 184, 255); showRect = false; showOverlay = true; overlayColor = QColor(255, 255, 255); canMove = false; pressed = false; this->installEventFilter(this); isAlarm = false; timerAlarm = new QTimer(this); connect(timerAlarm, SIGNAL(timeout()), this, SLOT(alarm())); timerAlarm->setInterval(500); } bool LightButton::eventFilter(QObject *watched, QEvent *event) { int type = event->type(); QMouseEvent *mouseEvent = (QMouseEvent *)event; if (type == QEvent::MouseButtonPress) { if (this->rect().contains(mouseEvent->pos()) && (mouseEvent->button() == Qt::LeftButton)) { lastPoint = mouseEvent->pos(); pressed = true; } } else if (type == QEvent::MouseMove && pressed) { if (canMove) { int dx = mouseEvent->pos().x() - lastPoint.x(); int dy = mouseEvent->pos().y() - lastPoint.y(); this->move(this->x() + dx, this->y() + dy); } } else if (type == QEvent::MouseButtonRelease && pressed) { pressed = false; Q_EMIT clicked(); } return QWidget::eventFilter(watched, event); } void LightButton::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); if (showRect) { //绘制矩形区域 painter.setPen(Qt::NoPen); painter.setBrush(bgColor); painter.drawRoundedRect(this->rect(), 5, 5); //绘制文字 if (!text.isEmpty()) { QFont font; font.setPixelSize(side - 20); painter.setFont(font); painter.setPen(textColor); painter.drawText(this->rect(), Qt::AlignCenter, text); } } else { 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); //绘制内部指示颜色 drawBg(&painter); //绘制居中文字 drawText(&painter); //绘制遮罩层 drawOverlay(&painter); } } void LightButton::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 LightButton::drawBorderIn(QPainter *painter) { int radius = 90; 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 LightButton::drawBg(QPainter *painter) { int radius = 80; painter->save(); painter->setPen(Qt::NoPen); painter->setBrush(bgColor); painter->drawEllipse(-radius, -radius, radius * 2, radius * 2); painter->restore(); } void LightButton::drawText(QPainter *painter) { if (text.isEmpty()) { return; } int radius = 100; painter->save(); QFont font; font.setPixelSize(85); painter->setFont(font); painter->setPen(textColor); QRect rect(-radius, -radius, radius * 2, radius * 2); painter->drawText(rect, Qt::AlignCenter, text); painter->restore(); } void LightButton::drawOverlay(QPainter *painter) { if (!showOverlay) { return; } int radius = 80; painter->save(); painter->setPen(Qt::NoPen); QPainterPath smallCircle; QPainterPath bigCircle; radius -= 1; smallCircle.addEllipse(-radius, -radius, radius * 2, radius * 2); radius *= 2; bigCircle.addEllipse(-radius, -radius + 140, radius * 2, radius * 2); //高光的形状为小圆扣掉大圆的部分 QPainterPath highlight = smallCircle - bigCircle; QLinearGradient linearGradient(0, -radius / 2, 0, 0); overlayColor.setAlpha(100); linearGradient.setColorAt(0.0, overlayColor); overlayColor.setAlpha(30); linearGradient.setColorAt(1.0, overlayColor); painter->setBrush(linearGradient); painter->rotate(-20); painter->drawPath(highlight); painter->restore(); } QSize LightButton::sizeHint() const { return QSize(100, 100); } QSize LightButton::minimumSizeHint() const { return QSize(10, 10); } QString LightButton::getText() const { return this->text; } void LightButton::setText(const QString &text) { if (this->text != text) { this->text = text; this->update(); } } QColor LightButton::getTextColor() const { return this->textColor; } void LightButton::setTextColor(const QColor &textColor) { if (this->textColor != textColor) { this->textColor = textColor; this->update(); } } QColor LightButton::getAlarmColor() const { return this->alarmColor; } void LightButton::setAlarmColor(const QColor &alarmColor) { if (this->alarmColor != alarmColor) { this->alarmColor = alarmColor; this->update(); } } QColor LightButton::getNormalColor() const { return this->normalColor; } void LightButton::setNormalColor(const QColor &normalColor) { if (this->normalColor != normalColor) { this->normalColor = normalColor; this->update(); } } QColor LightButton::getBorderOutColorStart() const { return this->borderOutColorStart; } void LightButton::setBorderOutColorStart(const QColor &borderOutColorStart) { if (this->borderOutColorStart != borderOutColorStart) { this->borderOutColorStart = borderOutColorStart; this->update(); } } QColor LightButton::getBorderOutColorEnd() const { return this->borderOutColorEnd; } void LightButton::setBorderOutColorEnd(const QColor &borderOutColorEnd) { if (this->borderOutColorEnd != borderOutColorEnd) { this->borderOutColorEnd = borderOutColorEnd; this->update(); } } QColor LightButton::getBorderInColorStart() const { return this->borderInColorStart; } void LightButton::setBorderInColorStart(const QColor &borderInColorStart) { if (this->borderInColorStart != borderInColorStart) { this->borderInColorStart = borderInColorStart; this->update(); } } QColor LightButton::getBorderInColorEnd() const { return this->borderInColorEnd; } void LightButton::setBorderInColorEnd(const QColor &borderInColorEnd) { if (this->borderInColorEnd != borderInColorEnd) { this->borderInColorEnd = borderInColorEnd; this->update(); } } QColor LightButton::getBgColor() const { return this->bgColor; } void LightButton::setBgColor(const QColor &bgColor) { if (this->bgColor != bgColor) { this->bgColor = bgColor; this->update(); } } bool LightButton::getCanMove() const { return this->canMove; } void LightButton::setCanMove(bool canMove) { if (this->canMove != canMove) {