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#ifndef BFWIDGET_H#define BFWIDGET_H#include#include #include /** * 窗口可以拖动 * 窗口增加阴影效果 * @brief The BFWidget class */class BFWidget : public QWidget{ Q_OBJECTpublic: explicit BFWidget(QWidget *parent = 0); /** * 重写空间排版设置 * 把空间排版到central_widget上面 * @brief setLayout * @param layout */ void setLayout(QLayout * layout);signals:public slots:protected: void mousePressEvent(QMouseEvent *event); void mouseReleaseEvent(QMouseEvent *event); void mouseMoveEvent(QMouseEvent *event); //void resizeEvent(QResizeEvent *event);private: //显示内容的区域 QWidget *central_widget; QPoint move_point; //移动的距离 bool mouse_press; //按下鼠标左键};#endif // BFWIDGET_H
#include#include #include #include #include #include "bfwidget.h"BFWidget::BFWidget(QWidget *parent) : QWidget(parent){ setWindowFlags(Qt::FramelessWindowHint); setAttribute(Qt::WA_TranslucentBackground); central_widget = new QWidget(); central_widget->setSizePolicy(QSizePolicy::Expanding,QSizePolicy::Expanding); 水平方向和垂直方向任意伸展 QPalette palette; palette.setBrush(QPalette::Background,QBrush(QColor(255,255,255))); central_widget->setPalette(palette); central_widget->setAutoFillBackground(true); QGraphicsDropShadowEffect *shadow_effect = new QGraphicsDropShadowEffect(); shadow_effect->setBlurRadius(10.0); shadow_effect->setColor(QColor(0, 0, 0, 100)); shadow_effect->setOffset(1.0); central_widget->setGraphicsEffect(shadow_effect); QVBoxLayout * main_layout = new QVBoxLayout(); main_layout->addWidget(central_widget, Qt::AlignCenter); main_layout->addSpacing(0); main_layout->setContentsMargins(5,5,5,5); QWidget::setLayout(main_layout);}void BFWidget::setLayout(QLayout *layout){ central_widget->setLayout(layout);}void BFWidget::mousePressEvent( QMouseEvent * event ){ //只能是鼠标左键移动和改变大小 if(event->button() == Qt::LeftButton) { mouse_press = true; } //窗口移动距离 move_point = event->globalPos() - pos();}void BFWidget::mouseReleaseEvent(QMouseEvent *){ mouse_press = false;}void BFWidget::mouseMoveEvent(QMouseEvent *event){ //移动窗口 if(mouse_press) { QPoint move_pos = event->globalPos(); move(move_pos - move_point); }}//void BFWidget::resizeEvent(QResizeEvent *event)//{// QSize size = event->size();// central_widget->setGeometry(5, 5, size.width() - 10, size.height() - 10);// qDebug() << central_widget->rect();//}
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