Qt实现简易毛玻璃效果的示例代码_C/C++

Qt实现简易毛玻璃效果的示例代码

2022-12-20 16:39la_vie_est_belle C/C++

这篇文章主要介绍了Qt如何利用模糊功能实现简易的毛玻璃效果，并且鼠标可以移动无边框窗口，感兴趣的小伙伴可以跟随小编一起学习一下

现有功能

1.用模糊功能实现简易的毛玻璃效果。

2.鼠标移动无边框窗口。

运行结果

Qt实现简易毛玻璃效果的示例代码

源码

frosted_glass_label.h

				?

									#ifndef FROSTEDGLASSLABEL_H

									#define FROSTEDGLASSLABEL_H

									#include <QWidget>

									#include <QLabel>

									#include <QMouseEvent>

									class FrostedGlassLabel : public QLabel

									{

									    Q_OBJECT

									public:

									    FrostedGlassLabel(QWidget *parent = nullptr);

									    ~FrostedGlassLabel();

									protected:

									    void mousePressEvent(QMouseEvent *event);

									    void mouseMoveEvent(QMouseEvent *event);

									private:

									    void setBackgroundColor();                  // 设置窗口背景颜色

									    void blur();                                // 模糊

									private:

									    float startX;                               // 这两个变量用来移动窗口

									    float startY;

									};

									#endif // FROSTEDGLASSLABEL_H

frosted_glass_label.cpp

				?

									#include "frosted_glass_label.h"

									#include <Qt>

									#include <QPalette>

									#include <QColor>

									#include <QGraphicsBlurEffect>

									FrostedGlassLabel::FrostedGlassLabel(QWidget *parent)

									    : QLabel(parent)

									{

									    this->resize(300, 100);

									    this->setWindowFlags(Qt::FramelessWindowHint);

									    this->setBackgroundColor();

									    this->blur();

									}

									FrostedGlassLabel::~FrostedGlassLabel()

									{

									}

									void FrostedGlassLabel::setBackgroundColor() {

									    QPalette palette;

									    palette.setColor(QPalette::Background, QColor(245, 245, 245, 250));

									    this->setPalette(palette);

									    this->setAutoFillBackground(true);

									}

									void FrostedGlassLabel::blur() {

									    QGraphicsBlurEffect *blur = new QGraphicsBlurEffect();

									    blur->setBlurRadius(30);

									    blur->setBlurHints(QGraphicsBlurEffect::QualityHint);

									    this->setGraphicsEffect(blur);

									}

									void FrostedGlassLabel::mousePressEvent(QMouseEvent *event) {

									    QLabel::mousePressEvent(event);

									    this->startX = event->x();

									    this->startY = event->y();

									}

									void FrostedGlassLabel::mouseMoveEvent(QMouseEvent *event) {

									    QLabel::mouseMoveEvent(event);

									    float disX = event->x() - this->startX;

									    float disY = event->y() - this->startY;

									    this->move(this->x()+disX, this->y()+disY);

									}

main.cpp

				?

									#include "frosted_glass_label.h"

									#include <QApplication>

									int main(int argc, char *argv[])

									{

									    QApplication a(argc, argv);

									    FrostedGlassLabel w;

									    w.show();

									    return a.exec();

									}