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an...@google.com
nj...@google.com
I know that there is an API council request to change Modifier.drawLayer to Modifier.graphicsLayer` thus dropping the "draw" prefix to the modifier. I think it might be reasonable to rename the following to match the naming of the fields within the layer API:
Introduce the following:
Modifier.drawOpacity -> Modifier.alpha
Modifier.scale,
Modifier.rotateX,
Modifier.rotateY,
Modifier.rotate (maybe rotateZ but maybe drop the Z to keep it simple?)
Modifier.translate
I think it is reasonable to have both Modifier.offset as well as translate with the documentation indicating that translate is more effective for animated use cases. The only concern I have is if we can somehow detect several of these modifiers in a chain would be able to effectively squash them into a single layer, (ex: Modifier.alpha(0.5f).scale(2f).rotate(45) etc.). What do you think?
ap...@google.com
1) you forgot to mention:
Modifier.drawShadow -> Modifier.shadow
2) I think for scale we can both overloads like
Modifier.scale(scaleX: Float, scaleY: Float)
Modifier.scale(scale: Float) = scale(scale, scale)
3) can we do similar thing for rotation? in simple cases you only want to rotate x and y, right?
Modifier.rotation(rotationX: Float, rotationY: Float, rotationZ: Float)
Modifier.rotation(rotation: Float) = rotation(rotation, rotation, 0)
4) and please, lets not add Modifier.translate() just yet. I am ok with this being available as more low level api Modifier.drawLayer() where we have more options, but not something so easy discoverable. in the doc we agreed that it could be useful to keep it for some complex cases. I am strongly convinced we shoudn't have both Modifier.offsetPx() and Modifier.translation()
5) so the decision to rename to graphicLayer() is final? I have a cl which will be affected by that:https://android-review.googlesource.com/c/platform/frameworks/support/+/1496274 . Should I already use new name GraphicLayerScope there?
Modifier.drawShadow -> Modifier.shadow
2) I think for scale we can both overloads like
Modifier.scale(scaleX: Float, scaleY: Float)
Modifier.scale(scale: Float) = scale(scale, scale)
3) can we do similar thing for rotation? in simple cases you only want to rotate x and y, right?
Modifier.rotation(rotationX: Float, rotationY: Float, rotationZ: Float)
Modifier.rotation(rotation: Float) = rotation(rotation, rotation, 0)
4) and please, lets not add Modifier.translate() just yet. I am ok with this being available as more low level api Modifier.drawLayer() where we have more options, but not something so easy discoverable. in the doc we agreed that it could be useful to keep it for some complex cases. I am strongly convinced we shoudn't have both Modifier.offsetPx() and Modifier.translation()
5) so the decision to rename to graphicLayer() is final? I have a cl which will be affected by that:
Description
Jetpack Compose release version: 1.0.0-beta05
Android Studio Arctic Fox | 2020.3.1 Canary 14 Build #AI-203.7717.56.2031.7260174, built on April 6, 2021 Runtime version: 11.0.9.1+0-b77-7246554 x86_64 VM: OpenJDK 64-Bit Server VM by JetBrains s.r.o. macOS 10.16 GC: G1 Young Generation, G1 Old Generation Memory: 2048M Cores: 12 Registry: external.system.auto.import.disabled=true
Talking with malkov@ we have a situation where we want to be able to use a painter to paint the background of a composable. Modifier.paint(Painter) doesn't work as we would like as it will not paint content. He suggested I raise a bug to get a new background modifier added that would take a painter directly.
To work around this issue I have ended up stacking a pair of boxes with the box at the back being Modifier.paint(painter) and the front one having the content.