I m confused about the Window size Parameter I want to open

Question

I m confused about the Window size Parameter I want to open my Windows in Full HD but the Window has a completely different size

Igor Demin · Answer

Window size uses density independent pixels It means width=800 means 1600 pixels with DPI=2 0 on high retina displays on macOs It is more explicit in the <https github com JetBrains compose jb tree master tutorials Window API new|new window API> as there we specify `800 dp` not just `800`

Stefan Oltmann · Answer

I thought so but if I define a width of 1280 and screenshot the resulting window it s 1664 pixels My scale is 2 0 regarding to LocalDensity currrent

Stefan Oltmann · Answer

How can I specify that in dp using the new API I don t see that in the tutorial

Igor Demin · Answer

See <https github com JetBrains compose jb tree master tutorials Window API new changing the state maximized minimized fullscreen size position of the window|this> You need to pass size argument ```val state = rememberWindowState size = WindowSize 800 dp 600 dp ``` Probably we need to add this information to the tutorial thinking face

Stefan Oltmann · Answer

Ok thank you slightly smiling face

Stefan Oltmann · Answer

Maybe that s a bug because using the new API results in the same display resolutions on macOS I defined 1920 2 als my wished Window size and the resulting size is 2144

Igor Demin · Answer

But it the same as in the old API So if you have 1664 pixels window on screenshot with width=1280 and LocalDensity current=2 0 probably something somewhere doesn t work as expected Either in Compose or in the screenshot tool This width is measured on a screenshot of the entire screen or on a screenshot of just single window

Stefan Oltmann · Answer

single window screenshot

Stefan Oltmann · Answer

Using macOS Screenshot tool

Igor Demin · Answer

Try to make a screenshot of the entire screen and calculate size manually relative to the width of the screenshot

Igor Demin · Answer

gt I defined 1920 2 als my wished Window size and the resulting size is 2144 Note that window has horizontal insets border and shadow The size of the window includes them

Igor Demin · Answer

To know what insets are you can use <https github com JetBrains compose jb tree master tutorials Window API new swing interoperability|Swing interop> `window insets` they are in density independent pixels too

Stefan Oltmann · Answer

Ok thank you That helped me a lot And yes you are right I have some tooling problem I wasn t aware that the Screenshots made with macOS build in app have a lot of padding for the shadows

Stefan Oltmann · Answer

Didn t expect that So everything is fine and I switched to the new API Thank you again