需求

某机器人项目中，需要加载构建的地图，此处仅测试直接加载图片的时间。

相关博客

测试代码

QString path;

path = "./map/1.png";

QFileInfo fileInfo;

fileInfo.setFile(path);

qDebug() << __FILE__ << __LINE__ << "Load file:" << path << " size:" << fileInfo.size();

qDebug() << __FILE__ << __LINE__ << "QImage start load, "

<< QDateTime::currentDateTime().toString("hh:MM:ss:zzz");

if(!_image.load(path))

{

qDebug() << __FILE__ << __LINE__ << "Failed to QImage load path:" << path;

}

qDebug() << __FILE__ << __LINE__ << "QImage end load, "

<< QDateTime::currentDateTime().toString("hh:MM:ss:zzz");

qDebug() << __FILE__ << __LINE__ << "QPixmap start load,"

<< QDateTime::currentDateTime().toString("hh:MM:ss:zzz");

if(!_pixmap.load(path))

{

qDebug() << __FILE__ << __LINE__ << "Failed to QPixmap load path:" << path;

}

qDebug() << __FILE__ << __LINE__ << "QPixmap end load, "

<< QDateTime::currentDateTime().toString("hh:MM:ss:zzz");

path = "./map/2.png";

fileInfo.setFile(path);

qDebug() << __FILE__ << __LINE__ << "Load file:" << path << " size:" << fileInfo.size();

qDebug() << __FILE__ << __LINE__ << "QImage start load, "

<< QDateTime::currentDateTime().toString("hh:MM:ss:zzz");

if(!_image.load(path))

{

qDebug() << __FILE__ << __LINE__ << "Failed to QImage load path:" << path;

}

qDebug() << __FILE__ << __LINE__ << "QImage end load, "

<< QDateTime::currentDateTime().toString("hh:MM:ss:zzz");

qDebug() << __FILE__ << __LINE__ << "QPixmap start load,"

<< QDateTime::currentDateTime().toString("hh:MM:ss:zzz");

if(!_pixmap.load(path))

{

qDebug() << __FILE__ << __LINE__ << "Failed to QPixmap load path:" << path;

}

qDebug() << __FILE__ << __LINE__ << "QPixmap end load, "

<< QDateTime::currentDateTime().toString("hh:MM:ss:zzz");

path = "./map/3.pgm";

fileInfo.setFile(path);

qDebug() << __FILE__ << __LINE__ << "Load file:" << path << " size:" << fileInfo.size();

qDebug() << __FILE__ << __LINE__ << "QImage start load, "

<< QDateTime::currentDateTime().toString("hh:MM:ss:zzz");

if(!_image.load(path))

{

qDebug() << __FILE__ << __LINE__ << "Failed to QImage load path:" << path;

}

qDebug() << __FILE__ << __LINE__ << "QImage end load, "

<< QDateTime::currentDateTime().toString("hh:MM:ss:zzz");

qDebug() << __FILE__ << __LINE__ << "QPixmap start load,"

<< QDateTime::currentDateTime().toString("hh:MM:ss:zzz");

if(!_pixmap.load(path))

{

qDebug() << __FILE__ << __LINE__ << "Failed to QPixmap load path:" << path;

}

qDebug() << __FILE__ << __LINE__ << "QPixmap end load, "

<< QDateTime::currentDateTime().toString("hh:MM:ss:zzz");

测试结果

拓展

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