本文主要介绍了qt普通菜单样式、带选中样式、带子菜单样式、超过一屏幕菜单样式、自定义带有滚动条的菜单样式,
先上图如下:
1.普通菜单样式
代码:
m_pmenu = new QMenu(this);
m_pmenu->setObjectName("quoteListMenu");
qss文件:
QMenu {
background-color: #3b3c49;
margin:0px;
padding:0px;
}
QMenu::indicator {
width: 31px;
height:30px;
background-color: #3b3c49;
margin: 2px
}
QMenu::indicator:selected {
background-color: #144675;
margin: 2px
}
QMenu::indicator:disabled {
background-color: #414141;
margin: 2px
}
QMenu::item {
color: #ffffff;
height:24px;
font:normal 14px;
margin:0px;
padding-left:12px;
padding-right:41px;
}
QMenu::item:selected {
color: #ffffff;
background-color:#545563;
}
QMenu::item:disabled {
color: #707070;
background-color: #414141;
}
QMenu::indicator:checked {
image:url(:/pic/tick.png);
}
/********/
QMenu#quoteListMenu
{
background: #3b3c49;
margin-top: 8px;
margin-bottom: 8px;
padding: 0px;
}
QMenu#quoteListMenu::item
{
color: #ffffff;
height: 24px;
font-size: 14px;
padding-left:12px;
padding-right:50px;
background-color: transparent;
}
QMenu#quoteListMenu::item:selected
{
color: #ffffff;
background-color: #545563;
}
QMenu#quoteListMenu::item:disabled {
color: #707070;
background-color:#414141;
}
QMenu#quoteListMenu::icon
{
padding-left: 20px;
}
QMenu#quoteListMenu::indicator:selected
{
background-color: #144675;
margin: 2px;
}
2.带选中样式的菜单
代码:
m_pmenu2 = new QMenu(this);
m_pmenu2->setObjectName("quoteListMenu2");
qss文件:
QMenu {
background-color: #3b3c49;
margin:0px;
padding:0px;
}
QMenu::indicator {
width: 31px;
height:30px;
background-color: #3b3c49;
margin: 2px
}
QMenu::indicator:selected {
background-color: #144675;
margin: 2px
}
QMenu::indicator:disabled {
background-color: #414141;
margin: 2px
}
QMenu::item {
color: #ffffff;
height:24px;
font:normal 14px;
margin:0px;
padding-left:12px;
padding-right:41px;
}
QMenu::item:selected {
color: #ffffff;
background-color:#545563;
}
QMenu::item:disabled {
color: #707070;
background-color: #414141;
}
QMenu::indicator:checked {
image:url(:/pic/tick.png);
}
/*--------------------*/
QMenu#quoteListMenu2
{
background: #3b3c49;
margin-top: 8px;
margin-bottom: 8px;
padding: 0px;
}
QMenu#quoteListMenu2::item
{
color: #ffffff;
height: 24px;
font-size: 14px;
padding-left:30px;
padding-right:50px;
background-color: transparent;
}
QMenu#quoteListMenu2::item:selected
{
color: #ffffff;
background-color: #545563;
}
QMenu#quoteListMenu2::item:disabled {
color: #707070;
background-color:#414141;
}
QMenu#quoteListMenu2::icon
{
padding-left: 10px;
}
QMenu#quoteListMenu2::indicator {
width: 31px;
height:30px;
background-color: #3b3c49;
margin: 2px
}
QMenu#quoteListMenu2::indicator:selected {
background-color: #545563;
margin: 2px
}
QMenu#quoteListMenu2::indicator:checked {
image:url(:/pic/tick.png);
}
QMenu#quoteListMenu2::indicator:disabled {
background-color: #414141;
margin: 2px
}
3.带子菜单样式(可以调整下拉按钮到边框的距离)
代码:
m_pmenu3 = new QMenu(this);
m_pmenu3->setObjectName("myArrowGap");
qss文件:
QMenu {
background-color: #3b3c49;
margin:0px;
padding:0px;
}
QMenu::indicator {
width: 31px;
height:30px;
background-color: #3b3c49;
margin: 2px
}
QMenu::indicator:selected {
background-color: #144675;
margin: 2px
}
QMenu::indicator:disabled {
background-color: #414141;
margin: 2px
}
QMenu::item {
color: #ffffff;
height:24px;
font:normal 14px;
margin:0px;
padding-left:12px;
padding-right:41px;
}
QMenu::item:selected {
color: #ffffff;
background-color:#545563;
}
QMenu::item:disabled {
color: #707070;
background-color: #414141;
}
QMenu::indicator:checked {
image:url(:/pic/tick.png);
}
/****************/
QMenu#myArrowGap {
background-color: #545563;
border: 1px solid #000000;
margin:0px;
padding:0px;
}
QMenu#myArrowGap::item {
color: #ffffff;
font:normal 12px;
margin-left:0px;
margin-right:10px;
margin-top: 0px;
margin-bottom: 0px;
padding-top:5;
padding-bottom:5;
padding-left:12px;
padding-right:41px;
}
QMenu#myArrowGap::item:hover {
color: #FFFFBB;
background-color:#545563;
}
QMenu#myArrowGap::item:selected {
color: #FFFFBB;
background-color:#545563;
}
QMenu#myArrowGap::item:disabled {
color: #707070;
background-color: #414141;
}
说明:下拉按钮距离右边距离通过设置margin-right:10px;实现
4.超过一屏幕菜单样式
代码1:头文件添加
#include <QtWidgets>
#include <QStyle>
class UProxyStyle : public QProxyStyle
{
Q_OBJECT
int styleHint(StyleHint h, const QStyleOption *op = Q_NULLPTR,
const QWidget *w = Q_NULLPTR, QStyleHintReturn *rd = Q_NULLPTR) const{
printf("UMenu::styleHint %d\n",h);
switch(h){
case QStyle::SH_ScrollBar_LeftClickAbsolutePosition: return true;
case QStyle::SH_ScrollBar_MiddleClickAbsolutePosition:return true;
case QStyle::SH_ScrollBar_ScrollWhenPointerLeavesControl: return false;
case QStyle::SH_Menu_Scrollable: return true;/*这一句是关键,返回true,表明支持*/ }
return QProxyStyle::styleHint(h,op,w); }
};
代码2:cpp中使用
m_pmenu = new QMenu(this);
//m_pmenu->setObjectName("myMenu");
m_pmenu->setStyle(new UProxyStyle());
connect(m_pmenu,&QMenu::triggered,this,&Dialog::slotTriggered);
说明:当超过屏幕时,会自动出现箭头
5.自定义带有滚动条的菜单样式(用QWidgetAction实现)
代码1:listwidgetaction.h文件
#ifndef LISTWIDGETACTION_H
#define LISTWIDGETACTION_H
#include <QWidgetAction>
#include <QListWidget>
#include <QObject>
class ListWidgetAction : public QWidgetAction
{
Q_OBJECT
public:
explicit ListWidgetAction(QWidget *parent);
virtual ~ListWidgetAction();
void AddString(QString strText, int id);
void Clear();
void SetRowHeight(int nHeight);
void SetMaxHeight(int nMaxHeight);
signals:
void sigClickItem(int id);
private slots:
void slotListItemClicked(QListWidgetItem *item);
private:
QListWidget* m_pListWidget;
int m_nRowHeight = 20;
int m_nMaxHeight = -1;
};
#endif // LISTWIDGETACTION_H
代码2:listwidgetaction.cpp文件
#include "listwidgetaction.h"
#include <QScrollBar>
ListWidgetAction::ListWidgetAction(QWidget *parent)
:QWidgetAction(parent)
{
m_pListWidget = new QListWidget(parent);
m_pListWidget->setSpacing(0);
m_pListWidget->setContentsMargins(0,0,0,0);
m_pListWidget->setFocusPolicy(Qt::NoFocus);
m_pListWidget->setVerticalScrollMode(QListWidget::ScrollPerPixel);//设置为像素滚动
m_pListWidget->verticalScrollBar()->setEnabled(false);
m_pListWidget->setObjectName("ListWidgetAction");
m_pListWidget->setSelectionMode(QAbstractItemView::SingleSelection);
m_pListWidget->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
m_pListWidget->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
connect(m_pListWidget, &QListWidget::itemClicked, this, &ListWidgetAction::slotListItemClicked);
setDefaultWidget(m_pListWidget);
}
ListWidgetAction::~ListWidgetAction()
{
}
void ListWidgetAction::AddString(QString strText, int id)
{
QListWidgetItem *item = new QListWidgetItem(strText);
item->setData(Qt::UserRole, id);
item->setSizeHint(QSize(-1, m_nRowHeight));
item->setTextAlignment(Qt::AlignCenter);
m_pListWidget->addItem(item);
//
int nCount = m_pListWidget->count();
int nRowHeight = m_nRowHeight;
int nTotalHeight = nCount * nRowHeight + 4;
if(m_nMaxHeight != -1)
{
if(nTotalHeight > m_nMaxHeight)
{
nTotalHeight = m_nMaxHeight;
m_pListWidget->verticalScrollBar()->setEnabled(true);
m_pListWidget->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn);
}
else
{
m_pListWidget->verticalScrollBar()->setEnabled(false);
m_pListWidget->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
}
}
m_pListWidget->setFixedHeight(nTotalHeight);
}
void ListWidgetAction::Clear()
{
m_pListWidget->clear();
}
void ListWidgetAction::SetRowHeight(int nHeight)
{
m_nRowHeight = nHeight;
}
void ListWidgetAction::SetMaxHeight(int nMaxHeight)
{
m_nMaxHeight = nMaxHeight;
}
void ListWidgetAction::slotListItemClicked(QListWidgetItem *item)
{
int id = item->data(Qt::UserRole).toInt();
emit sigClickItem(id);
}
代码3:使用
//菜单
m_pmenu2 = new QMenu(this);
m_pmenu2->setObjectName("myMenulist");
//
void Dialog::on_pushButton_2_clicked()
{
m_pmenu2->clear();
ListWidgetAction * actionList = new ListWidgetAction(this);
actionList->SetRowHeight(20);
actionList->SetMaxHeight(300);
connect(actionList , &ListWidgetAction::sigClickItem, this, &Dialog::slotMenuClickItem);
for(int i=0; i<25;i++)
{
QString ss;
ss = QString("菜单kkkkkkkk%1").arg(i);
actionList->AddString(ss, i);
}
m_pmenu2->addAction(actionList);
m_pmenu2->exec(QCursor::pos());
}
void Dialog::slotMenuClickItem(int id)
{
m_pmenu2->hide();
int aa = 0;
aa++;
}
说明:这一种样式,因为是QWidgetAction实现,所以只支持这种最简单的文字样式
demo源码:QT实战-qt菜单样式实现、自定义带滚动条的菜单实现