Qt 侧边栏_qsidebar

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通过QToolButton来实现侧边栏，或者说侧边工具栏，可以通过接口直接自由添加按钮，可以设置工具按钮对应的QWidget，进而点击不同的按钮可以显示不同的QWidget。

实现代码：

#ifndef QSIDEBAR_H
#define QSIDEBAR_H
 
#include <QtWidgets/QWidget>
#include <QtWidgets/qtoolbutton.h>
#include <QVBoxLayout>
#include <qmap.h>
#include <qbuttongroup.h>
 
class QSideBar : public QWidget
{
	Q_OBJECT
 
public:
	QSideBar(QWidget *parent = 0);
	~QSideBar();
 
	QToolButton* addTooButton(const QString &strName, const QString &strToolTip, const QIcon &icon);
	void setToolWidget(QToolButton *pToolBt, QWidget *pWidget);
private:
	void showWidget();
 
	QWidget *m_barWidget;
	QVBoxLayout *m_barLayout;
	QVector<QToolButton*> m_toolBts;
 
	QHBoxLayout *m_parentLayout;
	QWidget *m_blankWidget;
	QMap<QToolButton *, QWidget *> m_toolWidget;
 
	QToolButton *m_currentToolBt;
 
	QButtonGroup m_buttonGroup;
};
 
#endif // QSIDEBAR_H

#include "qsidebar.h"
 
QSideBar::QSideBar(QWidget *parent)
: QWidget(parent), m_currentToolBt(NULL)
{
	m_parentLayout = new QHBoxLayout(this);
	m_parentLayout->setContentsMargins(0, 0, 0, 0);
	m_barWidget = new QWidget(this);
	m_barWidget->setFixedWidth(64);
	m_barLayout = new QVBoxLayout(m_barWidget);
	m_barLayout->setContentsMargins(0, 0, 0, 0);
	m_barLayout->setSpacing(0);
 
	m_blankWidget = new QWidget(this);
	//m_blankWidget->setVisible(false);
 
	m_parentLayout->addWidget(m_barWidget);
	m_parentLayout->addWidget(m_blankWidget);
 
	QSpacerItem *pItem = new QSpacerItem(10, 10, QSizePolicy::Preferred, QSizePolicy::Expanding);
	m_barLayout->addSpacerItem(pItem);
}
 
QSideBar::~QSideBar()
{
 
}
 
QToolButton *QSideBar::addTooButton(const QString &strName, const QString &strToolTip, const QIcon &icon)
{
	QToolButton *pToolBt = new QToolButton(m_barWidget);
	pToolBt->setText(strName);
	pToolBt->setToolTip(strToolTip);
	pToolBt->setIcon(icon);
	pToolBt->setIconSize(QSize(64, 64));
	pToolBt->setCheckable(true);
	connect(pToolBt, &QToolButton::clicked, this, &QSideBar::showWidget);
	m_buttonGroup.addButton(pToolBt);
 
	m_barLayout->insertWidget(m_barLayout->count() - 1, pToolBt);
	return pToolBt;
}
 
void QSideBar::setToolWidget(QToolButton *pToolBt, QWidget *pWidget)
{
	m_toolWidget[pToolBt] = pWidget;
	if (pWidget)
	{
		m_parentLayout->addWidget(pWidget);
		pWidget->setVisible(false);
	}
}
 
void QSideBar::showWidget()
{
	m_blankWidget->setVisible(false);
	auto it = m_toolWidget[m_currentToolBt];
	if (it)
		it->setVisible(false);
 
	QToolButton *pTool = qobject_cast<QToolButton*>(sender());
	if (pTool)
	{
		m_currentToolBt = pTool;
 
		auto it = m_toolWidget[pTool];
		if (it)
			it->setVisible(true);
		else
			m_blankWidget->setVisible(true);
	}
}

测试代码：

#pragma execution_character_set("utf-8")
#include "qsidebar.h"
#include <QtWidgets/QApplication>
#include <QtWidgets\qlabel.h>
 
int main(int argc, char *argv[])
{
	QApplication a(argc, argv);
	QSideBar w;
 
	w.addTooButton("", "回退", QIcon(":/QSideBar/Resources/Toolbar_Undo_64px.ico"));
	w.addTooButton("", "前进", QIcon(":/QSideBar/Resources/Toolbar_Redo_64px.ico"));
 
	QLabel labelPlayList("列表");
	w.setToolWidget(w.addTooButton("", "列表", QIcon(":/QSideBar/Resources/Toolbar_Playlist_64px.ico")), &labelPlayList);
	QLabel labelCut("剪切");
	w.setToolWidget(w.addTooButton("", "剪切", QIcon(":/QSideBar/Resources/Toolbar_Cut_64px.ico")), &labelCut);
	QLabel labelSave("保存");
	w.setToolWidget(w.addTooButton("", "保存", QIcon(":/QSideBar/Resources/Toolbar_Save_64px.ico")), &labelSave);
	QLabel labelReset("重置");
	w.setToolWidget(w.addTooButton("", "重置", QIcon(":/QSideBar/Resources/Toolbar_Replay_64px.ico")), &labelReset);
 
	w.show();
	return a.exec();
}

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源码下载：QSideBarQt侧边栏.zip_qt侧边栏,qtsidebar-C++代码类资源-CSDN下载

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