Qt个性按钮

#pragma execution_character_set("utf-8") #include "lightbutton.h" #include "qpainter.h" #include "qevent.h" LightButton::LightButton(QWidget *parent) : QWidget(parent) { text = ""; textColor = QColor(255, 255, 255); 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); showOverlay = true; overlayColor = QColor(255, 255, 255); canMove = false; this->installEventFilter(this); setFont(QFont("Arial", 8)); } bool LightButton::eventFilter(QObject *obj, QEvent *evt) { if (canMove) { static QPoint lastPnt; static bool isHover = false; if (evt->type() == QEvent::MouseButtonPress) { setCursor(QCursor(Qt::OpenHandCursor)); QMouseEvent *e = static_cast<QMouseEvent *>(evt); if (this->rect().contains(e->pos()) && (e->button() == Qt::LeftButton)) { lastPnt = e->pos(); isHover = true; } } else if (evt->type() == QEvent::MouseMove && isHover) { QMouseEvent *e = static_cast<QMouseEvent *>(evt); int dx = e->pos().x() - lastPnt.x(); int dy = e->pos().y() - lastPnt.y(); this->move(this->x() + dx, this->y() + dy); } else if (evt->type() == QEvent::MouseButtonRelease && isHover) { setCursor(QCursor(Qt::ArrowCursor)); isHover = false; } } return QWidget::eventFilter(obj, evt); } 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); 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(); painter->setFont(QFont("Arial", 50, QFont::Bold, false)); 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(); } QString LightButton::getText() const { return this->text; } QColor LightButton::getTextColor() const { return this->textColor; } QColor LightButton::getBorderOutColorStart() const { return this->borderOutColorStart; } QColor LightButton::getBorderOutColorEnd() const { return this->borderOutColorEnd; } QColor LightButton::getBorderInColorStart() const { return this->borderInColorStart; } QColor LightButton::getBorderInColorEnd() const { return this->borderInColorEnd; } QColor LightButton::getBgColor() const { return this->bgColor; } bool LightButton::getCanMove() const { return this->canMove; } bool LightButton::getShowOverlay() const { return this->showOverlay; } QColor LightButton::getOverlayColor() const { return this->overlayColor; } QSize LightButton::sizeHint() const { return QSize(100, 100); } QSize LightButton::minimumSizeHint() const { return QSize(10, 10); } void LightButton::setText(const QString &text) { if (this->text != text) { this->text = text; update(); } } void LightButton::setTextColor(const QColor &textColor) { if (this->textColor != textColor) { this->textColor = textColor; update(); } } void LightButton::setBorderOutColorStart(const QColor &borderOutColorStart) { if (this->borderOutColorStart != borderOutColorStart) { this->borderOutColorStart = borderOutColorStart; update(); } } void LightButton::setBorderOutColorEnd(const QColor &borderOutColorEnd) { if (this->borderOutColorEnd != borderOutColorEnd) { this->borderOutColorEnd = borderOutColorEnd; update(); } } void LightButton::setBorderInColorStart(const QColor &borderInColorStart) { if (this->borderInColorStart != borderInColorStart) { this->borderInColorStart = borderInColorStart; update(); } } void LightButton::setBorderInColorEnd(const QColor &borderInColorEnd) { if (this->borderInColorEnd != borderInColorEnd) { this->borderInColorEnd = borderInColorEnd; update(); } } void LightButton::setBgColor(const QColor &bgColor) { if (this->bgColor != bgColor) { this->bgColor = bgColor; update(); } } void LightButton::setCanMove(bool canMove) { if (this->canMove != canMove) { this->canMove = canMove; update(); } } void LightButton::setShowOverlay(bool showOverlay) { if (this->showOverlay != showOverlay) { this->showOverlay = showOverlay; update(); } } void LightButton::setOverlayColor(const QColor &overlayColor) { if (this->overlayColor != overlayColor) { this->overlayColor = overlayColor; update(); } } void LightButton::setGreen() { setBgColor(QColor(0, 166, 0)); } void LightButton::setRed() { setBgColor(QColor(166, 0, 0)); } void LightButton::setYellow() { setBgColor(QColor(238, 238, 0)); } void LightButton::setBlack() { setBgColor(QColor(10, 10, 10)); } void LightButton::setGray() { setBgColor(QCo