Q: How can I draw text on a `Canvas` ? Can anyone ...
# compose-desktopt
theapache64
03/21/2021, 7:43 AMQ: How can I draw text on a
Canvasj
jim
03/21/2021, 3:49 PMIIRC, unfortunately, drawing text on Canvas is not yet supported but is on the todo list. cc @Nader Jawad @Siyamed
👍 1
t
theapache64
03/21/2021, 3:50 PMNoted. Thanks for responding 👍
n
Nader Jawad
03/21/2021, 5:47 PMDepending on the use case it migjt be easier to use a text composable with Modifier.drawBehind to allow you to issue drawing commands behind the text itself
t
theapache64
03/21/2021, 8:47 PMthat wudn't cover my usecase @Nader Jawad, but thanks for the info. didn't know that method.
n
Nader Jawad
03/21/2021, 8:50 PMYou can also access the android.graphics.Canvas object in a DrawScope using
drawIntoCanvas { canvas -> canvas.nativeCanvas.drawText}t
theapache64
03/21/2021, 9:48 PMn
Nader Jawad
03/21/2021, 9:50 PMCompose's DrawScope API leverages a compose Canvas interface which is a wrapper around android.graphics.Canvas on Android. With each of the APIs that interact with the system we provide interop APIs of the form native<X> or asAndroid<X> and can jump back into the compose world by using toCompose<X>
Nader Jawad
03/21/2021, 9:51 PMWhile we don't provide a direct primitive to draw text with composed graphics APIs directly outside of the Text composable you can always jump back into the Android APIs as a workaround
j
jim
03/22/2021, 7:21 AMOr in this case, that would be back to the native desktop skia APIs.
o
olonho
03/22/2021, 7:43 AMyep, using https://github.com/JetBrains/skija/blob/fb8ff8067329be10a1b0f686f5da9836fc2be7c3/shared/src/main/java/org/jetbrains/skija/Canvas.java#L379 may be usable for your case
👍 1
t
theapache64
03/22/2021, 7:45 AMYeah, this looks useful.
s
Siyamed
03/22/2021, 6:21 PMyou can also use Paragraph() construct or Text() composable directly.
Siyamed
03/22/2021, 6:22 PMwe have a ticket for that ticket number: 159949181
t
theapache64
03/23/2021, 2:26 AM@Siyamed Can you give me the full url ?
j
jim
03/23/2021, 4:17 AMI think that would be http://issuetracker.google.com/issues/159949181
t
theapache64
03/23/2021, 4:18 AMAlright thanks )
40 Views