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import androidx.compose.desktop.ui.tooling.preview.Preview
import androidx.compose.foundation.Canvas
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.material.Checkbox
import androidx.compose.material.MaterialTheme
import androidx.compose.material.Surface
import androidx.compose.material.Text
import androidx.compose.runtime.*

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// Paste this code into shaders.skia.org

float tileSize = 12;
float dotMinDiameter = 9;
vec2 maxRedShift = vec2(-2, 3);
vec2 maxGreenShift = vec2(2.5, 0);
vec2 maxBlueShift = vec2(1, -2);
half3 baseColor = half3(0, 0, 0);

half4 main(vec2 fragcoord) {

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fun Modifier.saturate(saturation: Float): Modifier =
    drawWithCache {
        // Cache the paint object so it can be reused between draw calls.
        val contentPaint = Paint().apply {
            colorFilter = ColorFilter.saturate(saturation)
        }

        onDrawWithContent {
            drawIntoCanvas {
                it.saveLayer(Rect(Offset.Zero, size), contentPaint)

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@Composable fun <C> ChipField(
  chips: List<C>,
  chipContent: @Composable (C) -> Unit.
  modifier: Modifier = Modifier
) {
  SelectionContainer(
    allowCursor = true,
    // some sort of callback or hoisted state for reading/mutating selection
    modifier.textFieldFocusable()
  ) {

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import androidx.compose.animation.core.Animatable
import androidx.compose.animation.core.Spring
import androidx.compose.animation.core.animateFloatAsState
import androidx.compose.animation.core.spring
import androidx.compose.foundation.background
import androidx.compose.foundation.gestures.detectDragGestures
import androidx.compose.foundation.layout.aspectRatio
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.wrapContentSize
import androidx.compose.integration.demos.BlockFilter.Companion.Lighting

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/**
 * Fork of AppCompat ContextThemeWrapper (barely) to correctly support applying override
 * configurations – all the features we don't need are dropped, it always extends the base context's
 * theme, the theme can't be set explicitly, and it adds one critical piece of functionality: the new
 * theme is [rebased][Theme.rebase] after being cloned from the base context's theme.
 */
open class ContextConfigThemeWrapper(
  base: Context,
  private val overrideConfiguration: Configuration
) : ContextWrapper(base) {

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                                 Apache License
                           Version 2.0, January 2004
                        http://www.apache.org/licenses/

   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION

   1. Definitions.

      "License" shall mean the terms and conditions for use, reproduction,

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@Composable fun App() {
  DebugBounds {
    Column(Modifier.background(Color.White).fillMaxSize()) {
      BasicText("Some text")
      Spacer(Modifier.size(10.dp))
      BasicText("More text")
      Spacer(Modifier.size(5.dp))
      BasicText("Button", Modifier
        .clickable { }
        .background(Color.Blue, RoundedCornerShape(3.dp))

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import android.util.Log
import androidx.compose.runtime.Composable
import androidx.compose.runtime.currentComposer
import androidx.compose.runtime.remember
import androidx.compose.ui.unit.IntBounds
import androidx.ui.tooling.CallGroup
import androidx.ui.tooling.Group
import androidx.ui.tooling.NodeGroup
import androidx.ui.tooling.asTree

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Resources for Learning Coroutines

Videos

• Kotlin Coroutines in Practice (Roman Elizarov @ KotlinConf 2018)
• Making any codebase more readable with Kotlin coroutines by Louis CAD (slides)
• Understand Kotlin Coroutines on Android (Google I/O'19)
• Deep diving into the Kotlin Coroutines API (Droidcon Berlin 2019)