private static float calculateScaleFactor() {
if (SystemInfo.isMac) {
return 1.0f;
}
if (SystemProperties.has("hidpi") && !SystemProperties.is("hidpi")) {
return 1.0f;
}
// On Linux: rely on DPI
if (SystemInfo.isLinux) {
final int dpi = getSystemDPI();
if (dpi < 120) return 1f;
if (dpi < 144) return 1.25f;
if (dpi < 168) return 1.5f;
if (dpi < 192) return 1.75f;
return 2f;
}
int size = -1;
// On Windows: rely on default system font
if (SystemInfo.isWindows) {
UIUtil.initSystemFontData();
Pair<String, Integer> fdata = UIUtil.getSystemFontData();
if (fdata != null) size = fdata.getSecond();
}
if (size == -1) {
size = Fonts.label().getSize();
}
if (size <= 13) return 1.0f;
if (size <= 16) return 1.25f;
if (size <= 18) return 1.5f;
if (size < 24) return 1.75f;
return 2.0f;
}