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);