It's calculated based on the pixelRatio value: 
https://github.com/codenameone/codenameone-skins/blob/master/HTC10/skin.properties#L9

On Thursday, January 7, 2021 at 5:38:30 PM UTC+2 P5music wrote:

> I cannot find the dpi value in that list.
>
> The problem is with devices sporting the Display.DENSITY_HD=60 device 
> density, that corresponds to XXHDPI devices.
> I had dpi=540 as the corresponding value (it is the value used in 
> calculations), I do not remember why I put that value. 
> Also with the dpi=480 value (from Android development website) the cm 
> length is too big in the CEF BrowserComponent, although smaller.
>
> These are the devices with that device density HD=60 -> 540/480 dpi
>
> Android
> pixel pixel2 pixel2xl htconea9 htconem8 huaweyp8 nexus5x nexus6p note5 s5 
> s7 s8
> iPhone
> X 5plus 6splus 7splus 8splus
>
> Maybe the dpi value is wrong but also maybe the device density value is 
> wrong.
> Regards
>
>
> Il giorno giovedì 7 gennaio 2021 alle 04:07:07 UTC+1 Shai Almog ha scritto:
>
>> I would assume the problem is in the CEF browser and not in the skin. Did 
>> you check the values in the properties file and verify that they match the 
>> stated DPI of the device?
>>
>> On Wednesday, January 6, 2021 at 2:13:07 PM UTC+2 P5music wrote:
>>
>>>
>>> It seems to be a skin issue for many device skins.
>>> These skins show big buttons when the size is from the material icon 
>>> set. They also show that the cm length is big.
>>>
>>> The cm length is meant to be what the simulator CEF BrowserComponent 
>>> shows as a fixed value. It is not a real cm I think but this is another 
>>> issue of Milestone 7.0.  It is the same whatever device is chosen as skin, 
>>> it is sometime blatantly wrong because it is in the simulator, not the 
>>> device.
>>>
>>> So let's consider just the differences from right and wrong cm measure 
>>> from dpi value.
>>>
>>> (Other buttons are instead sized according the dpi constant (not the dpi 
>>> value) with hard coded measure from the Android version of my app, for 
>>> example 32,48,72 and so on, they happen to be re right, so they will not be 
>>> considered.)
>>>
>>> Some skins with big buttons (material icon set) and big cm length:
>>> Note5, Pixel2XL, Pixel, Pixel2, HTCA9, HTCM8,Nexus5X,Nexus6P, S8
>>>
>>> skins with small buttons (material icon set) and big cm length
>>> iPhone6PLus, iPhone7XPlus, iPhone8Plus, X
>>>
>>> skins that have big button size (material icon set) and right cm length, 
>>> for example:
>>> MotoE, MotoG, Nexus4, GrandPrime, S3,iPhone5c
>>>
>>> skins with small buttons (material icon set) and right cm length
>>> iPhone6S, iPhone7, iPhone8
>>> Il giorno mercoledì 6 gennaio 2021 alle 04:19:18 UTC+1 Shai Almog ha 
>>> scritto:
>>>
>>>> Look at the skin file properties file to see the ratio variable used to 
>>>> calculate the density of the display. Maybe there was a mistake in 
>>>> generating this specific theme file. 
>>>> You can see the skins here: 
>>>> https://github.com/codenameone/codenameone-skins
>>>> On Tuesday, January 5, 2021 at 1:37:01 PM UTC+2 P5music wrote:
>>>>
>>>>> This question is related to
>>>>>
>>>>> https://groups.google.com/g/codenameone-discussions/c/ohobrY3v83s/m/ypQ8fmnvAQAJ
>>>>>
>>>>> In my code there is the need to have a standard length. The 
>>>>> instruction to do so is:
>>>>>
>>>>> int frameHeight= (int) (Utils.dpi()* 0.393701);
>>>>>
>>>>> This should be a centimeter. 
>>>>> (Utils.dpi() is a convenience method to get the dpi from the Display.
>>>>> getInstance().getDeviceDensity() value)
>>>>>
>>>>> I tested it with two skins:
>>>>>
>>>>> Android Note5 (dpi=540 xxhdpi -> 212px)
>>>>>
>>>>> iOS iPad3  (dpi=240 hdpi -> 94px)
>>>>>
>>>>> The length measure is used in some HTML, displayed in a 
>>>>> BrowserComponent.
>>>>>
>>>>> When running in simulator I get that
>>>>> the device is different - OK
>>>>> the font size and the icons size or images size are the same - OK
>>>>> the calculated pixels value for 1cm has different size, it is bigger 
>>>>> in the Note5 skin.
>>>>>
>>>>> Should I use CN.convertToPixels()?
>>>>>
>>>>> Thanks in advance
>>>>>
>>>>>

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