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该项目实现了带动画效果的多选框#xff0c;鼠标放在上面或者选中都会呈现炫酷的动画效果#xff0c;demo演示如下#xff1a; 项目部分代码如下所示#xff1a; #ifndef LINEARCHECKBOX_H
#define LINEARCHECKBOX_H#include QCheckBox
…1、概述 源码放在文章末尾
该项目实现了带动画效果的多选框鼠标放在上面或者选中都会呈现炫酷的动画效果demo演示如下 项目部分代码如下所示 #ifndef LINEARCHECKBOX_H
#define LINEARCHECKBOX_H#include QCheckBox
#include QPropertyAnimation
#include QPainter
#include QPainterPath
#include QDebugclass AniCheckBox : public QCheckBox
{Q_OBJECTQ_PROPERTY(double hover_prog READ getHoverProg WRITE setHoverProg)Q_PROPERTY(double part_prog READ getPartProg WRITE setPartProg)Q_PROPERTY(double check_prog READ getCheckProg WRITE setCheckProg)
public:AniCheckBox(QWidget* parent nullptr);void setForeColor(QColor c);protected:void paintEvent(QPaintEvent *) override;void enterEvent(QEvent *e) override;void leaveEvent(QEvent *e) override;bool hitButton(const QPoint ) const override;virtual void checkStateChanged(int state);virtual void drawBox(QPainter painter, QRectF rect);QPropertyAnimation* startAnimation(const QByteArray property, double begin, double end, int duration 500, QEasingCurve curve QEasingCurve::OutQuad);protected:double getHoverProg() const;void setHoverProg(double prog);double getPartProg() const;void setPartProg(double prog);double getCheckProg() const;void setCheckProg(double prog);protected:int boxSide 0; // 选择框边长0为自适应QColor foreColor QColor(#2753ff); // 前景颜色double hoverProg 0; // 鼠标移上去的进度double partyProg 0; // 部分选中的进度double checkProg 0; // 选中的进度
};#endif // LINEARCHECKBOX_H #include anicheckbox.hAniCheckBox::AniCheckBox(QWidget *parent) : QCheckBox(parent)
{setCursor(Qt::PointingHandCursor);connect(this, QCheckBox::stateChanged, this, [](int state) {// qInfo() 状态变化 static_castQt::CheckState(state);checkStateChanged(state);});
}void AniCheckBox::setForeColor(QColor c)
{this-foreColor c;
}void AniCheckBox::paintEvent(QPaintEvent *)
{// QCheckBox::paintEvent(e);QPainter painter(this);// painter.setRenderHint(QPainter::Antialiasing, true);QRectF rect;double textLeft;if (boxSide 0){// 自适应大小优先一行文字大小其次按比例const double fixedProp 0.8; // 默认比例QFontMetricsF fm(painter.font());double side fm.height(); // 一行文字的高度if (side this-height() * fixedProp)side this-height() * fixedProp;double margin side / 2;rect QRectF(margin, (height() - side) / 2, side, side);textLeft rect.right() margin;}else{// 固定大小double margin (this-height() - boxSide) / 2;rect QRectF(margin, margin, boxSide, boxSide);textLeft rect.right() margin;}// 绘制选择框painter.save();drawBox(painter, rect);painter.restore();// 绘制文字painter.save();painter.drawText(QRectF(textLeft, 0, this-width() - textLeft, this-height()), this-text(), Qt::AlignVCenter | Qt::AlignLeft);painter.restore();
}void AniCheckBox::enterEvent(QEvent *e)
{QCheckBox::enterEvent(e);startAnimation(hover_prog, getHoverProg(), 1);
}void AniCheckBox::leaveEvent(QEvent *e)
{QCheckBox::leaveEvent(e);startAnimation(hover_prog, getHoverProg(), 0);
}bool AniCheckBox::hitButton(const QPoint ) const
{return true;
}void AniCheckBox::checkStateChanged(int state)
{if (state Qt::Unchecked){startAnimation(check_prog, getCheckProg(), 0, 800, QEasingCurve::OutBounce);}else if (state Qt::PartiallyChecked){}else if (state Qt::Checked){startAnimation(check_prog, getCheckProg(), 1, 500, QEasingCurve::OutBack);}
}void AniCheckBox::drawBox(QPainter painter, QRectF rect)
{painter.setPen(foreColor);painter.setRenderHint(QPainter::Antialiasing, true);// 绘制边缘方框和悬浮状态有关double radius 3;radius * (1 - hoverProg);painter.drawRoundedRect(rect, radius, radius);// 绘制选中状态int state this-checkState();double prop 0.6;prop * checkProg;rect QRectF(rect.left() rect.width() * (1 - prop) / 2,rect.top() rect.height() * (1 - prop) / 2,rect.width() * prop,rect.height() * prop);QPainterPath path;path.addRoundedRect(rect, radius, radius);painter.fillPath(path, foreColor);if (state Qt::Unchecked){}else if (state Qt::PartiallyChecked){}else if (state Qt::Checked){}
}QPropertyAnimation *AniCheckBox::startAnimation(const QByteArray property, double begin, double end, int duration, QEasingCurve curve)
{QPropertyAnimation* ani new QPropertyAnimation(this, property);ani-setStartValue(begin);ani-setEndValue(end);ani-setDuration(duration);ani-setEasingCurve(curve);connect(ani, SIGNAL(finished()), ani, SLOT(deleteLater()));connect(ani, SIGNAL(valueChanged(const QVariant)), this, SLOT(update()));ani-start();return ani;
}double AniCheckBox::getHoverProg() const
{return hoverProg;
}void AniCheckBox::setHoverProg(double prog)
{this-hoverProg prog;
}double AniCheckBox::getPartProg() const
{return partyProg;
}void AniCheckBox::setPartProg(double prog)
{this-partyProg prog;
}double AniCheckBox::getCheckProg() const
{return checkProg;
}void AniCheckBox::setCheckProg(double prog)
{this-checkProg prog;
}
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