ComposeGears / ComposeGears/Valkyrie

[Previewer] Inline function will cause the preview to fail

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#357 7 comments 1 reaction 0 assignees View on GitHub

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Dominant language
Kotlin
Stars
889
Forks
26
Avg merge
36m
Merged PRs (30d)
2

Description

Create the following function:

import androidx.compose.ui.graphics.BlendMode
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.graphics.vector.DefaultGroupName
import androidx.compose.ui.graphics.vector.ImageVector
import androidx.compose.ui.unit.Dp
import kotlin.contracts.InvocationKind
import kotlin.contracts.contract

inline fun buildImageVector(
    name: String = DefaultGroupName,
    defaultWidth: Dp,
    defaultHeight: Dp,
    viewportWidth: Float,
    viewportHeight: Float,
    tintColor: Color = Color.Unspecified,
    tintBlendMode: BlendMode = BlendMode.SrcIn,
    autoMirror: Boolean = false,
    builderAction: ImageVector.Builder.() -> Unit
): ImageVector {
    contract { callsInPlace(builderAction, InvocationKind.EXACTLY_ONCE) }
    return ImageVector.Builder(
        name, defaultWidth, defaultHeight,
        viewportWidth, viewportHeight,
        tintColor, tintBlendMode, autoMirror
    ).apply(builderAction).build()
}

Using this function in ImageVector will cause the preview to fail:

Image

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the failure in the previewer with the provided inline buildImageVector function and an ImageVector use. Trace the previewer's handling of inline functions and confirm that the preview renders successfully with this function when the bug is fixed.

Written by the indexing model from the issue text.

Assessment

Tech stack
kotlin
Domain
devtools
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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