分享我用Qt开发的应用程序【二】在Qt应用程序中使用字体图标fontawesome

#ifndefICONHELPER_H
#defineICONHELPER_H
#include<QObject>
#include<QMutex>
#include<QMutexLocker>
#include<QtGui>
#include<QtWidgets>
#include<qfont.h>
classIconHelper:publicQObject
{
Q_OBJECT
private:
explicitIconHelper(QObject*parent=0);
QFonticonFont;
staticIconHelper*_instance;
public:
staticIconHelper*Instance()
{
staticQMutexmutex;
if(!_instance)
{
QMutexLockerlocker(&mutex);
if(!_instance)
{
_instance=newIconHelper;
}
}
return_instance;
}
voidSetIcon(QLabel*ctl,QCharc,intsize=10);
voidSetIcon(QPushButton*ctl,QCharc,intsize=10);
signals:
publicslots:
};
#endif//ICONHELPER_H

#include"IconHelper.h"
IconHelper*IconHelper::_instance=0;
IconHelper::IconHelper(QObject*):
QObject(qApp)
{
intfontId=QFontDatabase::addApplicationFont(qApp->applicationDirPath()+"/res/fontawesome-webfont.ttf");
QStringfontName=QFontDatabase::applicationFontFamilies(fontId).at(0);
iconFont=QFont(fontName);
}
voidIconHelper::SetIcon(QLabel*ctl,QCharc,intsize)
{
iconFont.setPointSize(size);
ctl->setFont(iconFont);
ctl->setText(c);
}
voidIconHelper::SetIcon(QPushButton*ctl,QCharc,intsize)
{
iconFont.setPointSize(size);
ctl->setFont(iconFont);
ctl->setText(c);
}

IconHelper::Instance()->SetIcon(ui->LeftBtn,QChar(0xf177),12);
IconHelper::Instance()->SetIcon(ui->RightBtn,QChar(0xf178),12);