缩放的QPixmap看起来很糟糕

Question

我有以下小部件:

pixmap = QtGui.QPixmap(r'pics\cdaudio.png').scaled(100, 100)

图像按比例缩小,从256x256.它看起来很不稳定:

如何从Qt内平滑地缩放？

Answer 1

使用transformMode参数:

pixmap = QtGui.QPixmap(r'pics\cdaudio.png').scaled(100, 100, transformMode=QtCore.Qt.SmoothTransformation)

Answer 2

根据@iTayb 的说法，这就是我的想法：

// Scale the source to the requested size with 
//  the KeepAspectRatio as aspectMode & SmoothTransformation as mode
*source = source->scaled(width, height, Qt::KeepAspectRatio, Qt::SmoothTransformation);
target->setPixmap(*source);