Qt小项目 | 实现迅雷设置界面

一、手写代码实现迅雷设置界面

  使用Qt控件（如：QListWidget与QScrollArea等）与布局实现腾讯会议登陆界面。设置界面除基本设置界面外，其他界面都是以图片的形式嵌入到项目中并没有手写代码。
基本设置界面的布局如下：

  代码实现如下：
SCrollAreaDemo.h：

#pragma once

#include "CBaseSetWidget.h"
#include "GaojiSetWidget.h"
#include 
#include 
#include 
#include 
#include 
#include 
#include 

class ScrollAreaDemo : public QWidget
{
    Q_OBJECT

public:
    ScrollAreaDemo(QWidget *parent = Q_NULLPTR);

private:
    QListWidget* m_pListWidget;
    QScrollArea* m_pScrollArea;
    QStringList  m_textList;

    CBaseSetWidget* m_pBaseSetWidget;
    QWidget* m_pYunpanSetWidget;
    QWidget* m_pDownloadWidget;
    QWidget* m_pJieguanWidget;
    QWidget* m_pRenwuWidget;
    QWidget* m_pTixingWidget;
    QWidget* m_pXuanfuWidget;
    GaojiSetWidget* m_pGaojiWidget;

    QVector<QWidget*> m_vecWidget;

    bool signFlag = false;

private:
    void slotItemClicked(QListWidgetItem* item);
    void slotValueChanged(int value);
};

SCrollAreaDemo.cpp：

#include "ScrollAreaDemo.h"
#include 

using namespace std;

ScrollAreaDemo::ScrollAreaDemo(QWidget *parent)
    : QWidget(parent)
{
    this->setFixedSize(QSize(150 + 1000 + 30 + 20,  900));
	this->setWindowFlags(Qt::FramelessWindowHint | Qt::WindowMinimizeButtonHint);
	this->setStyleSheet("background:rgb(26, 26, 26);");
    
	/*ListWidget*/
    m_pListWidget = new QListWidget(this);
    m_pListWidget->setFixedWidth(150);
	m_pListWidget->setFrameShape(QFrame::NoFrame);	//设置控件边框形状为无边框
	m_pListWidget->setFocusPolicy(Qt::NoFocus);	//设置控件的焦点策略

    m_textList << u8"基本设置" << u8"云盘设置" << u8"下载设置" << u8"接管设置" << u8"任务管理" << u8"提醒" << u8"悬浮窗" << u8"高级设置";
    m_pListWidget->addItems(m_textList);    //添加多个列表项

	//lw的样式表；R"()"；常用来写json
	string lw_qss = R"(
		QListWidget
		{
			/*border:1px solid gray;    边界线：宽度、颜色*/
			background:rgb(26, 26, 26);   /* 列表背景色*/
			color:rgb(200, 200, 200);     /*前景色、文字颜色*/
			font-size:15px;
			border-radius:1px;	/*圆角*/
		}

		QListWidget::item
		{
			height:40px;
			padding-left:10px; /*控制文本与left左边的距离 */
		}
		
		QListWidget::item:!active
		{
			background:rgb(26, 26, 26);
			margin:5px 20px 1px 20px;   /*上右下左，控制item与ListWidget的距离*/
		}
		/*悬浮到项目上时发生右偏移*/
		QListWidget::item:hover
		{
			background:rgb(56, 56, 56);
			padding-left:30px;
		}
		/*选中项目时，边框圆角与背景色发生改变*/
		QListWidget::item:selected
		{
			border-radius:15px;
			background:lightblue;
		}

		/*上次选择后保留的状态，鼠标离开后显示*/
		QListWidget::item:selected:!active
		{
			background:rgb(51,51,51);
			color:#3F85FF;
		})";
	m_pListWidget->setStyleSheet(QString::fromStdString(lw_qss));

	/* QScrollArea */
	m_pScrollArea = new QScrollArea(this);
	m_pScrollArea->setFixedWidth(1000 + 30);
	m_pScrollArea->setFrameShape(QFrame::NoFrame);	//设置控件无边框
	m_pScrollArea->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);	//设置控件的水平与竖直策略
	m_pScrollArea->setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);

	string verticalbar_qss = R"(
		QScrollBar{width:16px;background:rgb(26, 26, 26);margin:0px, 0px, 0px, 0px;}
		QScrollBar::handle:vertical{width:8px;background:rgba(162, 163, 165, 100%);border-radius:4px;min-height:40;}
              QScrollBar::handle:vertical:hover{width:8px;background:rgba(115,118,118, 100%);border-radius:4px;min-height:40;}
              QScrollBar::add-page:vertical,QScrollBar::sub-page:vertical{background:rgb(26, 26, 26);border-radius:4px;}
              QScrollBar::top-arrow:vertical,QScrollBar::bottom-arrow:vertical{border: none;background: none;color: none;}
              QScrollBar::add-line:vertical{border:none;background:none;}
              QScrollBar::sub-line:vertical{border:none;background:none;}
		)";

	//这里是难点
	m_pScrollArea->verticalScrollBar()->setStyleSheet(QString::fromStdString(verticalbar_qss));

	/*基本设置使用自定义类，其他部分使用图片代替*/
	m_pBaseSetWidget = new CBaseSetWidget;
	m_vecWidget.push_back(m_pBaseSetWidget);

	m_pYunpanSetWidget = new QWidget;
	m_pYunpanSetWidget->setStyleSheet("background-image:url(:/ScrollAreaDemo/resources/YunPanSet.png);background-repeat: no-repeat;background-color:rgb(51, 51, 51)");
	m_pYunpanSetWidget->setFixedSize(1000, 478);
	m_vecWidget.push_back(m_pYunpanSetWidget);

	m_pDownloadWidget = new QWidget;
	m_pDownloadWidget->setStyleSheet("background-image:url(:/ScrollAreaDemo/resources/XiaZai.png);background-repeat: no-repeat;background-color:rgb(51, 51, 51)");
	m_pDownloadWidget->setFixedSize(1000, 337);
	m_vecWidget.push_back(m_pDownloadWidget);

	m_pJieguanWidget = new QWidget;
	m_pJieguanWidget->setStyleSheet("background-image:url(:/ScrollAreaDemo/resources/JieGuanSet.png);background-repeat: no-repeat;background-color:rgb(51, 51, 51)");
	m_pJieguanWidget->setFixedSize(1000, 340);
	m_vecWidget.push_back(m_pJieguanWidget);

	m_pRenwuWidget = new QWidget;
	m_pRenwuWidget->setStyleSheet("background-image:url(:/ScrollAreaDemo/resources/RenwuGuanli.png);background-repeat: no-repeat;background-color:rgb(51, 51, 51)");
	m_pRenwuWidget->setFixedSize(1000, 413);
	m_vecWidget.push_back(m_pRenwuWidget);

	m_pTixingWidget = new QWidget;
	m_pTixingWidget->setStyleSheet("background-image:url(:/ScrollAreaDemo/resources/TiXing.png);background-repeat: no-repeat;background-color:rgb(51, 51, 51)");
	m_pTixingWidget->setFixedSize(1000, 728);
	m_vecWidget.push_back(m_pTixingWidget);

	m_pXuanfuWidget = new QWidget;
	m_pXuanfuWidget->setStyleSheet("background-image:url(:/ScrollAreaDemo/resources/XuanFuChuang.png);background-repeat: no-repeat;background-color:rgb(51, 51, 51)");
	m_pXuanfuWidget->setFixedSize(1000, 206);
	m_vecWidget.push_back(m_pXuanfuWidget);

	m_pGaojiWidget = new GaojiSetWidget;
	m_vecWidget.push_back(m_pGaojiWidget);

	QWidget* widget = new QWidget;

	QVBoxLayout* pVLay = new QVBoxLayout(widget);

	/*将所有的“设置Widget”添加进来*/
	for (auto w : m_vecWidget)
	{
		pVLay->addWidget(w);
		pVLay->addSpacing(15);
	}

	pVLay->setContentsMargins(0, 5, 0, 5);

	//给QScrollArea设置Widget
	m_pScrollArea->setWidget(widget);

	//整体布局
	QHBoxLayout* hlay = new QHBoxLayout(this);
	hlay->addWidget(m_pListWidget);
	hlay->setSpacing(0);
	hlay->addWidget(m_pScrollArea);

	/*点击listWidget的Item切换显示区域*/
	connect(m_pListWidget, &QListWidget::itemClicked, this, &ScrollAreaDemo::slotItemClicked);

	/*滚动鼠标中建时ScrollBar值变化的信号槽*/
	connect(m_pScrollArea->verticalScrollBar(), &QScrollBar::valueChanged,this, &ScrollAreaDemo::slotValueChanged);
}

void ScrollAreaDemo::slotItemClicked(QListWidgetItem* item)
{
	signFlag = true;
	QString itemText = item->text();
	QPoint widgetPos;

	int size = m_textList.size();
	for (int i = 0; i < size; i++)
	{
		if (itemText == m_textList[i])
		{
			widgetPos = m_vecWidget[i]->pos();
		}
	}

	m_pScrollArea->verticalScrollBar()->setValue(widgetPos.y());
}

void ScrollAreaDemo::slotValueChanged(int value)
{
	if (!signFlag)
	{
		int itemSize = m_vecWidget.size();
		for (int i = 0; i < itemSize; i++)
		{
			//visibleRegion()用来获取当前控件的可视区域,
			if (!m_vecWidget[i]->visibleRegion().isEmpty())
			{
				m_pListWidget->item(i)->setSelected(true);	//设置列表项的选中状态
				return;
			}
			else
			{
				m_pListWidget->item(i)->setSelected(false);
			}
		}
	}

	signFlag = false;
}

GaojiSetWidget.h：高级设置界面

#pragma once

#include 


class GaojiSetWidget : public QWidget
{
	Q_OBJECT

public:
	GaojiSetWidget(QWidget* parent = Q_NULLPTR);
	~GaojiSetWidget();

private:

};

GaojiSetWidget.cpp：高级设置界面

#include "GaojiSetWidget.h"
#include 
#include 

GaojiSetWidget::GaojiSetWidget(QWidget* parent)
	: QWidget(parent)
{
	QLabel* pLabel1 = new QLabel(this);
	pLabel1->setFixedSize(1000, 541);
	QPixmap* pixmap = new QPixmap(":/ScrollAreaDemo/resources/GaojiSet_1.png");
	pixmap->scaled(pLabel1->size(), Qt::KeepAspectRatio);
	pLabel1->setScaledContents(true);
	pLabel1->setPixmap(*pixmap);

	QLabel* pLabel2 = new QLabel(this);
	pLabel2->setFixedSize(1000, 685);
	pixmap = new QPixmap(":/ScrollAreaDemo/resources/GaojiSet_2.png");
	pixmap->scaled(pLabel2->size(), Qt::KeepAspectRatio);
	pLabel2->setScaledContents(true);
	pLabel2->setPixmap(*pixmap);
	QVBoxLayout* pVLay = new QVBoxLayout(this);
	pVLay->addWidget(pLabel1);
	pVLay->setSpacing(0);
	pVLay->addWidget(pLabel2);
	pVLay->setContentsMargins(0, 0, 0, 0);
}

GaojiSetWidget::~GaojiSetWidget()
{
}

CBaseSetWidget.h：基本设置界面

#pragma once
#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 

class CBaseSetWidget : public QWidget
{
public:
	CBaseSetWidget(QWidget* parent = Q_NULLPTR);
	~CBaseSetWidget();

private:
	QLabel* pBasesetLabel;
	QCheckBox* pCheckKaijiqidong;
	QCheckBox* pCheckMiandarao;
	QLabel* p1;
	QLabel* p2;
	QCheckBox* pCheckBosskey;
	QLineEdit* pLineEdit;
	QCheckBox* pCheckNewShowMainUI;
	QLabel* pXiazaimoshi;
	QRadioButton* pQuansuxiazai;
	QRadioButton* pXiansuxiazai;
	QPushButton* pBtnModify;
	QLabel* label_cfginfo;

	QVBoxLayout* pMainVlay;
	QHBoxLayout* pHlay1;
	QVBoxLayout* pVlay1;
	QHBoxLayout* pHlay2;
	QHBoxLayout* pHlay3;
	QHBoxLayout* pHlay4;
	QVBoxLayout* pVlay2;
	QHBoxLayout* pHlay5;
	QHBoxLayout* pHlay6;
};

CBaseSetWidget.cpp：基本设置界面

#include "CBaseSetWidget.h"
#include 
#include 
#include 
#include 
#include 
#include 
#include 

CBaseSetWidget::CBaseSetWidget(QWidget* parent)
	:QWidget(parent)
{
	setWindowFlags(Qt::FramelessWindowHint);
	setAttribute(Qt::WA_StyledBackground);
	this->setStyleSheet("background-color:rgb(51, 51, 51);color:rgb(200,200,200);");

	QLabel* pBasesetLabel = new QLabel(this);
	pBasesetLabel->setText(u8"基本设置");

	QCheckBox* pCheckKaijiqidong = new QCheckBox(this);
	pCheckKaijiqidong->setText(u8"开机启动");

	QCheckBox* pCheckMiandarao = new QCheckBox(this);
	pCheckMiandarao->setFixedWidth(140);
	pCheckMiandarao->setText(u8"开启免打扰模式");

	QLabel* p1 = new QLabel(this);
	p1->setText("?");

	QCheckBox* pCheckBosskey = new QCheckBox(this);
	pCheckBosskey->setFixedWidth(105);
	pCheckBosskey->setText(u8"开启老板键");

	QLineEdit* pLineEdit = new QLineEdit(this);
	pLineEdit->setFixedWidth(100);
	pLineEdit->setStyleSheet("border-style:solid;border-width:1px;border-color:rgb(79,79,79);");
	QLabel* p2 = new QLabel(this);
	p2->setText("Alt+D");

	QCheckBox* pCheckNewShowMainUI = new QCheckBox(this);
	pCheckNewShowMainUI->setText(u8"新建时显示主界面");

	QLabel* pXiazaimoshi = new QLabel(this);
	pXiazaimoshi->setText(u8"下载模式");
	
	QRadioButton* pQuansuxiazai = new QRadioButton(this);
	pQuansuxiazai->setText(u8"全速下载");

	QRadioButton* pXiansuxiazai = new QRadioButton(this);
	pXiansuxiazai->setText(u8"极速下载");
	pXiansuxiazai->setFixedWidth(90);

	QPushButton* pBtnModify = new QPushButton(this);
	pBtnModify->setText(u8"修改设置");
	pBtnModify->setStyleSheet("background-color:#1A1A1A;color:#5F5F5F");

	QLabel* label_cfginfo = new QLabel(this);
	label_cfginfo->setText(u8"限制时间段: 00:00-23:59 最大下载速度:不限速");

	QVBoxLayout* pMainVlay = new QVBoxLayout(this);
	pMainVlay->addWidget(pBasesetLabel);
	pMainVlay->addSpacing(20);

	QHBoxLayout* pHlay1 = new QHBoxLayout(this);
	pHlay1->addSpacing(35);

	QVBoxLayout* pVlay1 = new QVBoxLayout(this);
	pVlay1->addWidget(pCheckKaijiqidong);
	pVlay1->addSpacing(20);

	QHBoxLayout* pHlay2 = new QHBoxLayout;
	pHlay2->addWidget(pCheckMiandarao);
	pHlay2->addWidget(p1);

	pVlay1->addLayout(pHlay2);  // 添加免打扰的水平布局
	pVlay1->addSpacing(20);

	QHBoxLayout* pHlay3 = new QHBoxLayout;
	pHlay3->addWidget(pCheckBosskey);
	pHlay3->addWidget(pLineEdit);
	pHlay3->addWidget(p2);

	pVlay1->addLayout(pHlay3);
	pVlay1->addSpacing(20);

	pVlay1->addWidget(pCheckNewShowMainUI);
	pVlay1->addSpacing(20);

	pVlay1->addWidget(pXiazaimoshi);  // 下载模式
	pVlay1->addSpacing(20);

	QHBoxLayout* pHlay4 = new QHBoxLayout;  //  下载模式下面的水平布局
	pHlay4->addSpacing(30);

	QVBoxLayout* pVlay2 = new QVBoxLayout(this);

	QHBoxLayout* pHlay5 = new QHBoxLayout;
	pHlay5->addWidget(pQuansuxiazai);
	pHlay5->addWidget(p2);
	pVlay2->addLayout(pHlay5);
	pVlay2->addSpacing(20);
	
	// 限速下载
	QHBoxLayout* pHlay6 = new QHBoxLayout;
	pHlay6->addWidget(pXiansuxiazai);
	pHlay6->addWidget(pBtnModify);
	pHlay6->addWidget(label_cfginfo);
	pHlay6->addStretch();

	pVlay2->addLayout(pHlay6);

	pHlay4->addLayout(pVlay2);

	pVlay1->addLayout(pHlay4);
	pHlay1->addLayout(pVlay1);

	pMainVlay->addLayout(pHlay1);
	pMainVlay->setContentsMargins(20, 20, 20, 20);
}

CBaseSetWidget::~CBaseSetWidget()
{
}

main.cpp：

#include "ScrollAreaDemo.h"
#include 

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    ScrollAreaDemo w;
    w.show();
    return a.exec();
}

运行结果：