Clean up examples directory

sky/examples/style/hex-layout.sky

Index: sky/examples/style/hex-layout.sky
diff --git a/sky/examples/style/hex-layout.sky b/sky/examples/style/hex-layout.sky
deleted file mode 100644
index 5225ddafc2e1f14077be57b379dfd8382cf09e42..0000000000000000000000000000000000000000
--- a/sky/examples/style/hex-layout.sky
+++ /dev/null
@@ -1,152 +0,0 @@
-#!mojo mojo:sky
-<import src="sky:core" as="sky"/>
-<script>
- class BeehiveLayoutManager extends sky.LayoutManager {
-   function layout(width, height) {
-     if (width == null)
-       width = this.getIntrinsicWidth().value;
-     let autoHeight = false;
-     if (height == null) {
-       height = 0;
-       autoHeight = true;
-     }
-     this.assumeDimensions(width, height);
-     let cellCount = this.node.getProperty('beehive-count');
-     let cellDim = width / cellCount;
-     let children = this.walkChildren();
-     let loop = children.next();
-     let x = 0;
-     let y = 0;
-     while (!loop.done) {
-       let child = loop.value;
-       if (child.needsLayout) {
-         child.layoutManager.layout(cellDim, cellDim);
-         // we ignore the size the child reported from layout(), and force it to the cell dimensions
-         this.setChildSize(child, cellDim, cellDim);
-       } else if (child.descendantNeedsLayout) {
-         child.layoutManager.layoutDescendants();
-         this.setChildSize(child, cellDim, cellDim);
-       }
-       this.setChildPosition(child, x * cellDim + (y % 2) * cellDim/2, y * 3/4 * cellDim);
-       x += 1;
-       if (x > cellCount) {
-         y += 1;
-         x = 0;
-       }
-       loop = children.next();
-     }
-     if (height == 0)
-       height = (1 + y * 3/4) * cellDim;
-     this.markAsLaidOut();
-     return {
-       width: width,
-       height: height,
-     }
-   }
-   function getIntrinsicHeight() {
-     let height = this.node.getProperty('height');
-     if (typeof height != 'number') {
-       // e.g. height: auto
-       width = this.getIntrinsicWidth().value;
-       let cellCount = this.node.getProperty('beehive-count');
-       let cellDim = width / cellCount;
-       let children = this.walkChildren();
-       let loop = children.next();
-       let childCount = 0;
-       while (!loop.done) {
-         childCount += 1;
-         loop.next();
-       }
-       if (childCount > 0)
-         height = cellDim * (1/4 + Math.ceil(childCount / cellCount) * 3/4);
-       else
-         height = 0;
-     }
-     return super(height); // does the equivalent of getIntrinsicWidth() above, applying min-height etc
-   }
-   function paintChildren(canvas) {
-     let width = this.node.width;
-     let cellCount = this.node.getProperty('beehive-count');
-     let cellDim = width / cellCount;
-     let children = this.walkChildren();
-     let loop = children.next();
-     while (!loop.done) {
-       let child = loop.value;
-       canvas.save();
-       try {
-         canvas.beginPath();
-         canvas.moveTo(child.x, child.y + cellDim/4);
-         canvas.lineTo(child.x + cellDim/2, child.y);
-         canvas.lineTo(child.x + cellDim, child.y + cellDim/4);
-         canvas.lineTo(child.x + cellDim, child.y + 3*cellDim/4);
-         canvas.lineTo(child.x + cellDim/2, child.y + cellDim);
-         canvas.moveTo(child.x, child.y + 3*cellDim/4);
-         canvas.closePath();
-         canvas.clip();
-         canvas.paintChild(child);
-       } finally {
-         canvas.restore();
-       }
-       loop = children.next();
-     }
-   }
-   function inHex(topLeftX, topLeftY, width, height, hitX, hitY) {
-     let centerX = topLeftX - width/2;
-     let absCenteredHitX = Math.abs(hitX - centerX);
-     if (absCenteredHitX > width/2)
-       return false;
-     let centerY = topLeftY - height/2;
-     let absCenteredHitY = Math.abs(hitY - centerY);
-     if (absCenteredHitY > height/2)
-       return false;
-     if (absCenteredHitY < height * absCenteredHitX / (2 * width) + height / 2)
-       return true;
-     return false;
-   }
-   function hitTest(x, y) {
-     let cellCount = this.node.getProperty('beehive-count');
-     let cellDim = width / cellCount;
-     let children = this.walkChildren();
-     let loop = children.next();
-     while (!loop.done) {
-       let child = loop.value;
-       if (this.inHex(child.x, child.y, child.width, child.height, x, y))
-         return child.layoutManager.hitTest(x-child.x, y-child.y);
-       loop = children.next();
-     }
-     return this.node;
-   }
- }
- sky.registerLayoutManager('beehive', BeehiveLayoutManager);
- let BeehiveCountStyleGrammar = new StyleGrammar();
- BeehiveCountStyleGrammar.addParser((tokens) => {
-   let token = tokens.next();
-   if (token.done)
-     throw new Error();
-   if (token.value.kind != 'number')
-     throw new Error();
-   if (token.value.value <= 0)
-     throw new Error();
-   if (Math.trunc(token.value.value) != token.value.value) // is integer
-     throw new Error();
-   return new NumericStyleValue(token.value.value);
- });
- sky.registerProperty({
-   name: 'beehive-count',
-   type: BeehiveCountStyleGrammar,
-   inherits: true,
-   initialValue: 5,
-   needsLayout: true,
- });
-</script>
-<style>
- div { display: beehive; beehive-count: 3; }
-</style>
-<div>
- <t>Hello</t>
- <t>World</t>
- <t>How</t>
- <t>Are</t>
- <t>You</t>
- <t>Today?</t>
-</div>