Qt使用字体图标fontawesome

为了使用简单，需要先写一个单件类，头文件的代码如下：

其中静态方法Instance保证IconHelper的实例全局唯一

（注意构造函数已经私有化了）

#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

 

下面来看一下CPP文件的代码

应用程序所在目录下创建res目录，并放置字体文件/res/fontawesome-webfont.ttf

然后加载到全局字体中

 

#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);
}

只要这样调用即可：如果你想让一个QLabel或者QPushButton控件显示一个图标的话

 

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

详见：http://fontawesome.io/cheatsheet/

注意，这里的16进制的数据是从fontawesome官网上得来的

 

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转载自：https://www.cnblogs.com/liulun/p/3797795.html

其他参考：https://www.cnblogs.com/pyw0818/p/8052047.html