Update deps

Signed-off-by: jmug <u.g.a.mariano@gmail.com>
This commit is contained in:
Mariano Uvalle 2025-04-19 21:11:18 -07:00
parent 759678d46b
commit 6e0c3fc8a5
97 changed files with 18164 additions and 2 deletions

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cmake_minimum_required(VERSION 3.27)
project(clay_official_website C)
set(CMAKE_C_STANDARD 99)
add_executable(clay_official_website main.c)
target_compile_options(clay_official_website PUBLIC)
target_include_directories(clay_official_website PUBLIC .)

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mkdir -p build/clay \
&& clang \
-Wall \
-Werror \
-Os \
-DCLAY_WASM \
-mbulk-memory \
--target=wasm32 \
-nostdlib \
-Wl,--strip-all \
-Wl,--export-dynamic \
-Wl,--no-entry \
-Wl,--export=__heap_base \
-Wl,--export=ACTIVE_RENDERER_INDEX \
-Wl,--initial-memory=6553600 \
-o build/clay/index.wasm \
main.c \
&& cp index.html build/clay/index.html && cp -r fonts/ build/clay/fonts \
&& cp index.html build/clay/index.html && cp -r images/ build/clay/images

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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1" />
<link rel="preload" href="/clay/fonts/Calistoga-Regular.ttf" as="font" type="font/ttf" crossorigin>
<link rel="preload" href="/clay/fonts/Quicksand-Semibold.ttf" as="font" type="font/ttf" crossorigin>
<title>Clay - UI Layout Library</title>
<style>
html, body {
width: 100%;
height: 100%;
overflow: hidden;
padding: 0;
margin: 0;
pointer-events: none;
background: rgb(244, 235, 230);
}
/* Import the font using @font-face */
@font-face {
font-family: 'Calistoga';
font-style: normal;
font-weight: 400;
src: url('/clay/fonts/Calistoga-Regular.ttf') format('truetype');
}
@font-face {
font-family: 'Quicksand';
font-style: normal;
font-weight: 400;
src: url('/clay/fonts/Quicksand-Semibold.ttf') format('truetype');
}
body > canvas {
width: 100%;
height: 100%;
touch-action: none;
}
div, a, img {
position: absolute;
box-sizing: border-box;
-webkit-backface-visibility: hidden;
pointer-events: none;
}
a {
cursor: pointer;
pointer-events: all;
}
.text {
pointer-events: all;
white-space: pre;
}
/* TODO special exception for text selection in debug tools */
[id='2067877626'] > * {
pointer-events: none !important;
}
</style>
</head>
<script type="module">
const CLAY_RENDER_COMMAND_TYPE_NONE = 0;
const CLAY_RENDER_COMMAND_TYPE_RECTANGLE = 1;
const CLAY_RENDER_COMMAND_TYPE_BORDER = 2;
const CLAY_RENDER_COMMAND_TYPE_TEXT = 3;
const CLAY_RENDER_COMMAND_TYPE_IMAGE = 4;
const CLAY_RENDER_COMMAND_TYPE_SCISSOR_START = 5;
const CLAY_RENDER_COMMAND_TYPE_SCISSOR_END = 6;
const CLAY_RENDER_COMMAND_TYPE_CUSTOM = 7;
const GLOBAL_FONT_SCALING_FACTOR = 0.8;
let renderCommandSize = 0;
let scratchSpaceAddress = 8;
let heapSpaceAddress = 0;
let memoryDataView;
let textDecoder = new TextDecoder("utf-8");
let previousFrameTime;
let fontsById = [
'Quicksand',
'Calistoga',
'Quicksand',
'Quicksand',
'Quicksand',
];
let elementCache = {};
let imageCache = {};
let dimensionsDefinition = { type: 'struct', members: [
{name: 'width', type: 'float'},
{name: 'height', type: 'float'},
]};
let colorDefinition = { type: 'struct', members: [
{name: 'r', type: 'float' },
{name: 'g', type: 'float' },
{name: 'b', type: 'float' },
{name: 'a', type: 'float' },
]};
let stringDefinition = { type: 'struct', members: [
{name: 'length', type: 'uint32_t' },
{name: 'chars', type: 'uint32_t' },
]};
let stringSliceDefinition = { type: 'struct', members: [
{name: 'length', type: 'uint32_t' },
{name: 'chars', type: 'uint32_t' },
{name: 'baseChars', type: 'uint32_t' },
]};
let borderWidthDefinition = { type: 'struct', members: [
{name: 'left', type: 'uint16_t'},
{name: 'right', type: 'uint16_t'},
{name: 'top', type: 'uint16_t'},
{name: 'bottom', type: 'uint16_t'},
{name: 'betweenChildren', type: 'uint16_t'},
]};
let cornerRadiusDefinition = { type: 'struct', members: [
{name: 'topLeft', type: 'float'},
{name: 'topRight', type: 'float'},
{name: 'bottomLeft', type: 'float'},
{name: 'bottomRight', type: 'float'},
]};
let textConfigDefinition = { name: 'text', type: 'struct', members: [
{ name: 'textColor', ...colorDefinition },
{ name: 'fontId', type: 'uint16_t' },
{ name: 'fontSize', type: 'uint16_t' },
{ name: 'letterSpacing', type: 'uint16_t' },
{ name: 'lineSpacing', type: 'uint16_t' },
{ name: 'wrapMode', type: 'uint8_t' },
{ name: 'disablePointerEvents', type: 'uint8_t' },
{ name: '_padding', type: 'uint16_t' },
]};
let textRenderDataDefinition = { type: 'struct', members: [
{ name: 'stringContents', ...stringSliceDefinition },
{ name: 'textColor', ...colorDefinition },
{ name: 'fontId', type: 'uint16_t' },
{ name: 'fontSize', type: 'uint16_t' },
{ name: 'letterSpacing', type: 'uint16_t' },
{ name: 'lineHeight', type: 'uint16_t' },
]};
let rectangleRenderDataDefinition = { type: 'struct', members: [
{ name: 'backgroundColor', ...colorDefinition },
{ name: 'cornerRadius', ...cornerRadiusDefinition },
]};
let imageRenderDataDefinition = { type: 'struct', members: [
{ name: 'backgroundColor', ...colorDefinition },
{ name: 'cornerRadius', ...cornerRadiusDefinition },
{ name: 'sourceDimensions', ...dimensionsDefinition },
{ name: 'imageData', type: 'uint32_t' },
]};
let customRenderDataDefinition = { type: 'struct', members: [
{ name: 'backgroundColor', ...colorDefinition },
{ name: 'cornerRadius', ...cornerRadiusDefinition },
{ name: 'customData', type: 'uint32_t' },
]};
let borderRenderDataDefinition = { type: 'struct', members: [
{ name: 'color', ...colorDefinition },
{ name: 'cornerRadius', ...cornerRadiusDefinition },
{ name: 'width', ...borderWidthDefinition },
{ name: 'padding', type: 'uint16_t'}
]};
let scrollRenderDataDefinition = { type: 'struct', members: [
{ name: 'horizontal', type: 'bool' },
{ name: 'vertical', type: 'bool' },
]};
let customHTMLDataDefinition = { type: 'struct', members: [
{ name: 'link', ...stringDefinition },
{ name: 'cursorPointer', type: 'uint8_t' },
{ name: 'disablePointerEvents', type: 'uint8_t' },
]};
let renderCommandDefinition = {
name: 'CLay_RenderCommand',
type: 'struct',
members: [
{ name: 'boundingBox', type: 'struct', members: [
{ name: 'x', type: 'float' },
{ name: 'y', type: 'float' },
{ name: 'width', type: 'float' },
{ name: 'height', type: 'float' },
]},
{ name: 'renderData', type: 'union', members: [
{ name: 'rectangle', ...rectangleRenderDataDefinition },
{ name: 'text', ...textRenderDataDefinition },
{ name: 'image', ...imageRenderDataDefinition },
{ name: 'custom', ...customRenderDataDefinition },
{ name: 'border', ...borderRenderDataDefinition },
{ name: 'scroll', ...scrollRenderDataDefinition },
]},
{ name: 'userData', type: 'uint32_t'},
{ name: 'id', type: 'uint32_t' },
{ name: 'zIndex', type: 'int16_t' },
{ name: 'commandType', type: 'uint8_t' },
{ name: '_padding', type: 'uint8_t' },
]
};
function getStructTotalSize(definition) {
switch(definition.type) {
case 'union':
case 'struct': {
let totalSize = 0;
for (const member of definition.members) {
let result = getStructTotalSize(member);
if (definition.type === 'struct') {
totalSize += result;
} else {
totalSize = Math.max(totalSize, result);
}
}
return totalSize;
}
case 'float': return 4;
case 'uint32_t': return 4;
case 'int32_t': return 4;
case 'uint16_t': return 2;
case 'int16_t': return 2;
case 'uint8_t': return 1;
case 'bool': return 1;
default: {
throw "Unimplemented C data type " + definition.type
}
}
}
function readStructAtAddress(address, definition) {
switch(definition.type) {
case 'union':
case 'struct': {
let struct = { __size: 0 };
for (const member of definition.members) {
let result = readStructAtAddress(address, member);
struct[member.name] = result;
if (definition.type === 'struct') {
struct.__size += result.__size;
address += result.__size;
} else {
struct.__size = Math.max(struct.__size, result.__size);
}
}
return struct;
}
case 'float': return { value: memoryDataView.getFloat32(address, true), __size: 4 };
case 'uint32_t': return { value: memoryDataView.getUint32(address, true), __size: 4 };
case 'int32_t': return { value: memoryDataView.getUint32(address, true), __size: 4 };
case 'uint16_t': return { value: memoryDataView.getUint16(address, true), __size: 2 };
case 'int16_t': return { value: memoryDataView.getInt16(address, true), __size: 2 };
case 'uint8_t': return { value: memoryDataView.getUint8(address, true), __size: 1 };
case 'bool': return { value: memoryDataView.getUint8(address, true), __size: 1 };
default: {
throw "Unimplemented C data type " + definition.type
}
}
}
function getTextDimensions(text, font) {
// re-use canvas object for better performance
window.canvasContext.font = font;
let metrics = window.canvasContext.measureText(text);
return { width: metrics.width, height: metrics.fontBoundingBoxAscent + metrics.fontBoundingBoxDescent };
}
function createMainArena(arenaStructAddress, arenaMemoryAddress) {
let memorySize = instance.exports.Clay_MinMemorySize();
// Last arg is address to store return value
instance.exports.Clay_CreateArenaWithCapacityAndMemory(arenaStructAddress, memorySize, arenaMemoryAddress);
}
async function init() {
await Promise.all(fontsById.map(f => document.fonts.load(`12px "${f}"`)));
window.htmlRoot = document.body.appendChild(document.createElement('div'));
window.canvasRoot = document.body.appendChild(document.createElement('canvas'));
window.canvasContext = window.canvasRoot.getContext("2d");
window.mousePositionXThisFrame = 0;
window.mousePositionYThisFrame = 0;
window.mouseWheelXThisFrame = 0;
window.mouseWheelYThisFrame = 0;
window.touchDown = false;
window.arrowKeyDownPressedThisFrame = false;
window.arrowKeyUpPressedThisFrame = false;
let zeroTimeout = null;
document.addEventListener("wheel", (event) => {
window.mouseWheelXThisFrame = event.deltaX * -0.1;
window.mouseWheelYThisFrame = event.deltaY * -0.1;
clearTimeout(zeroTimeout);
zeroTimeout = setTimeout(() => {
window.mouseWheelXThisFrame = 0;
window.mouseWheelYThisFrame = 0;
}, 10);
});
function handleTouch (event) {
if (event.touches.length === 1) {
window.touchDown = true;
let target = event.target;
let scrollTop = 0;
let scrollLeft = 0;
let activeRendererIndex = memoryDataView.getUint32(instance.exports.ACTIVE_RENDERER_INDEX.value, true);
while (activeRendererIndex !== 1 && target) {
scrollLeft += target.scrollLeft;
scrollTop += target.scrollTop;
target = target.parentElement;
}
window.mousePositionXThisFrame = event.changedTouches[0].pageX + scrollLeft;
window.mousePositionYThisFrame = event.changedTouches[0].pageY + scrollTop;
}
}
document.addEventListener("touchstart", handleTouch);
document.addEventListener("touchmove", handleTouch);
document.addEventListener("touchend", () => {
window.touchDown = false;
window.mousePositionXThisFrame = 0;
window.mousePositionYThisFrame = 0;
})
document.addEventListener("mousemove", (event) => {
let target = event.target;
let scrollTop = 0;
let scrollLeft = 0;
let activeRendererIndex = memoryDataView.getUint32(instance.exports.ACTIVE_RENDERER_INDEX.value, true);
while (activeRendererIndex !== 1 && target) {
scrollLeft += target.scrollLeft;
scrollTop += target.scrollTop;
target = target.parentElement;
}
window.mousePositionXThisFrame = event.x + scrollLeft;
window.mousePositionYThisFrame = event.y + scrollTop;
});
document.addEventListener("mousedown", (event) => {
window.mouseDown = true;
window.mouseDownThisFrame = true;
});
document.addEventListener("mouseup", (event) => {
window.mouseDown = false;
});
document.addEventListener("keydown", (event) => {
if (event.key === "ArrowDown") {
window.arrowKeyDownPressedThisFrame = true;
}
if (event.key === "ArrowUp") {
window.arrowKeyUpPressedThisFrame = true;
}
if (event.key === "d") {
window.dKeyPressedThisFrame = true;
}
});
const importObject = {
clay: {
measureTextFunction: (addressOfDimensions, textToMeasure, addressOfConfig, userData) => {
let stringLength = memoryDataView.getUint32(textToMeasure, true);
let pointerToString = memoryDataView.getUint32(textToMeasure + 4, true);
let textConfig = readStructAtAddress(addressOfConfig, textConfigDefinition);
let textDecoder = new TextDecoder("utf-8");
let text = textDecoder.decode(memoryDataView.buffer.slice(pointerToString, pointerToString + stringLength));
let sourceDimensions = getTextDimensions(text, `${Math.round(textConfig.fontSize.value * GLOBAL_FONT_SCALING_FACTOR)}px ${fontsById[textConfig.fontId.value]}`);
memoryDataView.setFloat32(addressOfDimensions, sourceDimensions.width, true);
memoryDataView.setFloat32(addressOfDimensions + 4, sourceDimensions.height, true);
},
queryScrollOffsetFunction: (addressOfOffset, elementId) => {
let container = document.getElementById(elementId.toString());
if (container) {
memoryDataView.setFloat32(addressOfOffset, -container.scrollLeft, true);
memoryDataView.setFloat32(addressOfOffset + 4, -container.scrollTop, true);
}
},
},
};
const { instance } = await WebAssembly.instantiateStreaming(
fetch("/clay/index.wasm"), importObject
);
memoryDataView = new DataView(new Uint8Array(instance.exports.memory.buffer).buffer);
scratchSpaceAddress = instance.exports.__heap_base.value;
let clayScratchSpaceAddress = instance.exports.__heap_base.value + 1024;
heapSpaceAddress = instance.exports.__heap_base.value + 2048;
let arenaAddress = scratchSpaceAddress + 8;
window.instance = instance;
createMainArena(arenaAddress, heapSpaceAddress);
memoryDataView.setFloat32(instance.exports.__heap_base.value, window.innerWidth, true);
memoryDataView.setFloat32(instance.exports.__heap_base.value + 4, window.innerHeight, true);
instance.exports.Clay_Initialize(arenaAddress, instance.exports.__heap_base.value);
instance.exports.SetScratchMemory(arenaAddress, clayScratchSpaceAddress);
renderCommandSize = getStructTotalSize(renderCommandDefinition);
renderLoop();
}
function MemoryIsDifferent(one, two, length) {
for (let i = 0; i < length; i++) {
if (one[i] !== two[i]) {
return true;
}
}
return false;
}
function SetElementBackgroundColorAndRadius(element, cornerRadius, backgroundColor) {
element.style.backgroundColor = `rgba(${backgroundColor.r.value}, ${backgroundColor.g.value}, ${backgroundColor.b.value}, ${backgroundColor.a.value / 255})`;
if (cornerRadius.topLeft.value > 0) {
element.style.borderTopLeftRadius = cornerRadius.topLeft.value + 'px';
}
if (cornerRadius.topRight.value > 0) {
element.style.borderTopRightRadius = cornerRadius.topRight.value + 'px';
}
if (cornerRadius.bottomLeft.value > 0) {
element.style.borderBottomLeftRadius = cornerRadius.bottomLeft.value + 'px';
}
if (cornerRadius.bottomRight.value > 0) {
element.style.borderBottomRightRadius = cornerRadius.bottomRight.value + 'px';
}
}
function renderLoopHTML() {
let capacity = memoryDataView.getInt32(scratchSpaceAddress, true);
let length = memoryDataView.getInt32(scratchSpaceAddress + 4, true);
let arrayOffset = memoryDataView.getUint32(scratchSpaceAddress + 8, true);
let scissorStack = [{ nextAllocation: { x: 0, y: 0 }, element: htmlRoot, nextElementIndex: 0 }];
let previousId = 0;
for (let i = 0; i < length; i++, arrayOffset += renderCommandSize) {
let entireRenderCommandMemory = new Uint8Array(memoryDataView.buffer.slice(arrayOffset, arrayOffset + renderCommandSize));
let renderCommand = readStructAtAddress(arrayOffset, renderCommandDefinition);
let parentElement = scissorStack[scissorStack.length - 1];
let element = null;
let isMultiConfigElement = previousId === renderCommand.id.value;
if (!elementCache[renderCommand.id.value]) {
let elementType = 'div';
switch (renderCommand.commandType.value & 0xff) {
case CLAY_RENDER_COMMAND_TYPE_RECTANGLE: {
// if (readStructAtAddress(renderCommand.renderData.rectangle.value, rectangleRenderDataDefinition).link.length.value > 0) { TODO reimplement links
// elementType = 'a';
// }
break;
}
case CLAY_RENDER_COMMAND_TYPE_IMAGE: {
elementType = 'img'; break;
}
default: break;
}
element = document.createElement(elementType);
element.id = renderCommand.id.value;
if (renderCommand.commandType.value === CLAY_RENDER_COMMAND_TYPE_SCISSOR_START) {
element.style.overflow = 'hidden';
}
elementCache[renderCommand.id.value] = {
exists: true,
element: element,
previousMemoryCommand: new Uint8Array(0),
previousMemoryConfig: new Uint8Array(0),
previousMemoryText: new Uint8Array(0)
};
}
let elementData = elementCache[renderCommand.id.value];
element = elementData.element;
if (!isMultiConfigElement && Array.prototype.indexOf.call(parentElement.element.children, element) !== parentElement.nextElementIndex) {
if (parentElement.nextElementIndex === 0) {
parentElement.element.insertAdjacentElement('afterbegin', element);
} else {
parentElement.element.childNodes[Math.min(parentElement.nextElementIndex - 1, parentElement.element.childNodes.length - 1)].insertAdjacentElement('afterend', element);
}
}
elementData.exists = true;
// Don't get me started. Cheaper to compare the render command memory than to update HTML elements
let dirty = MemoryIsDifferent(elementData.previousMemoryCommand, entireRenderCommandMemory, renderCommandSize) && !isMultiConfigElement;
if (!isMultiConfigElement) {
parentElement.nextElementIndex++;
}
previousId = renderCommand.id.value;
elementData.previousMemoryCommand = entireRenderCommandMemory;
let offsetX = scissorStack.length > 0 ? scissorStack[scissorStack.length - 1].nextAllocation.x : 0;
let offsetY = scissorStack.length > 0 ? scissorStack[scissorStack.length - 1].nextAllocation.y : 0;
if (dirty) {
element.style.transform = `translate(${Math.round(renderCommand.boundingBox.x.value - offsetX)}px, ${Math.round(renderCommand.boundingBox.y.value - offsetY)}px)`
element.style.width = Math.round(renderCommand.boundingBox.width.value) + 'px';
element.style.height = Math.round(renderCommand.boundingBox.height.value) + 'px';
}
// note: commandType is packed to uint8_t and has 3 garbage bytes of padding
switch(renderCommand.commandType.value & 0xff) {
case (CLAY_RENDER_COMMAND_TYPE_NONE): {
break;
}
case (CLAY_RENDER_COMMAND_TYPE_RECTANGLE): {
let config = renderCommand.renderData.rectangle;
let configMemory = JSON.stringify(config);
if (configMemory === elementData.previousMemoryConfig) {
break;
}
SetElementBackgroundColorAndRadius(element, config.cornerRadius, config.backgroundColor);
if (renderCommand.userData.value !== 0) {
let customData = readStructAtAddress(renderCommand.userData.value, customHTMLDataDefinition);
let linkContents = customData.link.length.value > 0 ? textDecoder.decode(new Uint8Array(memoryDataView.buffer.slice(customData.link.chars.value, customData.link.chars.value + customData.link.length.value))) : 0;
memoryDataView.setUint32(0, renderCommand.id.value, true);
if (linkContents.length > 0 && (window.mouseDownThisFrame || window.touchDown) && instance.exports.Clay_PointerOver(0)) {
window.location.href = linkContents;
}
if (linkContents.length > 0) {
element.href = linkContents;
}
if (linkContents.length > 0 || customData.cursorPointer.value) {
element.style.pointerEvents = 'all';
element.style.cursor = 'pointer';
}
}
elementData.previousMemoryConfig = configMemory;
break;
}
case (CLAY_RENDER_COMMAND_TYPE_BORDER): {
let config = renderCommand.renderData.border;
let configMemory = JSON.stringify(config);
if (configMemory === elementData.previousMemoryConfig) {
break;
}
let color = config.color;
elementData.previousMemoryConfig = configMemory;
if (config.width.left.value > 0) {
element.style.borderLeft = `${config.width.left.value}px solid rgba(${color.r.value}, ${color.g.value}, ${color.b.value}, ${color.a.value / 255})`
}
if (config.width.right.value > 0) {
element.style.borderRight = `${config.width.right.value}px solid rgba(${color.r.value}, ${color.g.value}, ${color.b.value}, ${color.a.value / 255})`
}
if (config.width.top.value > 0) {
element.style.borderTop = `${config.width.top.value}px solid rgba(${color.r.value}, ${color.g.value}, ${color.b.value}, ${color.a.value / 255})`
}
if (config.width.bottom.value > 0) {
element.style.borderBottom = `${config.width.bottom.value}px solid rgba(${color.r.value}, ${color.g.value}, ${color.b.value}, ${color.a.value / 255})`
}
if (config.cornerRadius.topLeft.value > 0) {
element.style.borderTopLeftRadius = config.cornerRadius.topLeft.value + 'px';
}
if (config.cornerRadius.topRight.value > 0) {
element.style.borderTopRightRadius = config.cornerRadius.topRight.value + 'px';
}
if (config.cornerRadius.bottomLeft.value > 0) {
element.style.borderBottomLeftRadius = config.cornerRadius.bottomLeft.value + 'px';
}
if (config.cornerRadius.bottomRight.value > 0) {
element.style.borderBottomRightRadius = config.cornerRadius.bottomRight.value + 'px';
}
break;
}
case (CLAY_RENDER_COMMAND_TYPE_TEXT): {
let config = renderCommand.renderData.text;
let customData = readStructAtAddress(renderCommand.userData.value, customHTMLDataDefinition);
let configMemory = JSON.stringify(config);
let stringContents = new Uint8Array(memoryDataView.buffer.slice(config.stringContents.chars.value, config.stringContents.chars.value + config.stringContents.length.value));
if (configMemory !== elementData.previousMemoryConfig) {
element.className = 'text';
let textColor = config.textColor;
let fontSize = Math.round(config.fontSize.value * GLOBAL_FONT_SCALING_FACTOR);
element.style.color = `rgba(${textColor.r.value}, ${textColor.g.value}, ${textColor.b.value}, ${textColor.a.value})`;
element.style.fontFamily = fontsById[config.fontId.value];
element.style.fontSize = fontSize + 'px';
element.style.pointerEvents = customData.disablePointerEvents.value ? 'none' : 'all';
elementData.previousMemoryConfig = configMemory;
}
if (stringContents.length !== elementData.previousMemoryText.length || MemoryIsDifferent(stringContents, elementData.previousMemoryText, stringContents.length)) {
element.innerHTML = textDecoder.decode(stringContents);
}
elementData.previousMemoryText = stringContents;
break;
}
case (CLAY_RENDER_COMMAND_TYPE_SCISSOR_START): {
scissorStack.push({ nextAllocation: { x: renderCommand.boundingBox.x.value, y: renderCommand.boundingBox.y.value }, element, nextElementIndex: 0 });
let config = renderCommand.renderData.scroll;
let configMemory = JSON.stringify(config);
if (configMemory === elementData.previousMemoryConfig) {
break;
}
if (config.horizontal.value) {
element.style.overflowX = 'scroll';
element.style.pointerEvents = 'auto';
}
if (config.vertical.value) {
element.style.overflowY = 'scroll';
element.style.pointerEvents = 'auto';
}
elementData.previousMemoryConfig = configMemory;
break;
}
case (CLAY_RENDER_COMMAND_TYPE_SCISSOR_END): {
scissorStack.splice(scissorStack.length - 1, 1);
break;
}
case (CLAY_RENDER_COMMAND_TYPE_IMAGE): {
let config = renderCommand.renderData.image;
let imageURL = readStructAtAddress(config.imageData.value, stringDefinition);
let srcContents = new Uint8Array(memoryDataView.buffer.slice(imageURL.chars.value, imageURL.chars.value + imageURL.length.value));
if (srcContents.length !== elementData.previousMemoryText.length || MemoryIsDifferent(srcContents, elementData.previousMemoryText, srcContents.length)) {
element.src = textDecoder.decode(srcContents);
}
elementData.previousMemoryText = srcContents;
break;
}
case (CLAY_RENDER_COMMAND_TYPE_CUSTOM): break;
default: {
console.log("Error: unhandled render command");
}
}
}
for (const key of Object.keys(elementCache)) {
if (elementCache[key].exists) {
elementCache[key].exists = false;
} else {
elementCache[key].element.remove();
delete elementCache[key];
}
}
}
function renderLoopCanvas() {
// Note: Rendering to canvas needs to be scaled up by window.devicePixelRatio in both width and height.
// e.g. if we're working on a device where devicePixelRatio is 2, we need to render
// everything at width^2 x height^2 resolution, then scale back down with css to get the correct pixel density.
let capacity = memoryDataView.getUint32(scratchSpaceAddress, true);
let length = memoryDataView.getUint32(scratchSpaceAddress + 4, true);
let arrayOffset = memoryDataView.getUint32(scratchSpaceAddress + 8, true);
window.canvasRoot.width = window.innerWidth * window.devicePixelRatio;
window.canvasRoot.height = window.innerHeight * window.devicePixelRatio;
window.canvasRoot.style.width = window.innerWidth + 'px';
window.canvasRoot.style.height = window.innerHeight + 'px';
let ctx = window.canvasContext;
let scale = window.devicePixelRatio;
for (let i = 0; i < length; i++, arrayOffset += renderCommandSize) {
let renderCommand = readStructAtAddress(arrayOffset, renderCommandDefinition);
let boundingBox = renderCommand.boundingBox;
// note: commandType is packed to uint8_t and has 3 garbage bytes of padding
switch(renderCommand.commandType.value & 0xff) {
case (CLAY_RENDER_COMMAND_TYPE_NONE): {
break;
}
case (CLAY_RENDER_COMMAND_TYPE_RECTANGLE): {
let config = renderCommand.renderData.rectangle;
let color = config.backgroundColor;
ctx.beginPath();
window.canvasContext.fillStyle = `rgba(${color.r.value}, ${color.g.value}, ${color.b.value}, ${color.a.value / 255})`;
window.canvasContext.roundRect(
boundingBox.x.value * scale, // x
boundingBox.y.value * scale, // y
boundingBox.width.value * scale, // width
boundingBox.height.value * scale,
[config.cornerRadius.topLeft.value * scale, config.cornerRadius.topRight.value * scale, config.cornerRadius.bottomRight.value * scale, config.cornerRadius.bottomLeft.value * scale]) // height;
ctx.fill();
ctx.closePath();
// Handle link clicks
if (renderCommand.userData.value !== 0) {
let customData = readStructAtAddress(renderCommand.userData.value, customHTMLDataDefinition);
let linkContents = customData.link.length.value > 0 ? textDecoder.decode(new Uint8Array(memoryDataView.buffer.slice(customData.link.chars.value, customData.link.chars.value + customData.link.length.value))) : 0;
memoryDataView.setUint32(0, renderCommand.id.value, true);
if (linkContents.length > 0 && (window.mouseDownThisFrame || window.touchDown) && instance.exports.Clay_PointerOver(0)) {
window.location.href = linkContents;
}
}
break;
}
case (CLAY_RENDER_COMMAND_TYPE_BORDER): {
let config = renderCommand.renderData.border;
let color = config.color;
ctx.beginPath();
ctx.moveTo(boundingBox.x.value * scale, boundingBox.y.value * scale);
// Top Left Corner
if (config.cornerRadius.topLeft.value > 0) {
let lineWidth = config.width.top.value;
let halfLineWidth = lineWidth / 2;
ctx.moveTo((boundingBox.x.value + halfLineWidth) * scale, (boundingBox.y.value + config.cornerRadius.topLeft.value + halfLineWidth) * scale);
ctx.lineWidth = lineWidth * scale;
ctx.strokeStyle = `rgba(${color.r.value}, ${color.g.value}, ${color.b.value}, ${color.a.value / 255})`;
ctx.arcTo((boundingBox.x.value + halfLineWidth) * scale, (boundingBox.y.value + halfLineWidth) * scale, (boundingBox.x.value + config.cornerRadius.topLeft.value + halfLineWidth) * scale, (boundingBox.y.value + halfLineWidth) * scale, config.cornerRadius.topLeft.value * scale);
ctx.stroke();
}
// Top border
if (config.width.top.value > 0) {
let lineWidth = config.width.top.value;
let halfLineWidth = lineWidth / 2;
ctx.lineWidth = lineWidth * scale;
ctx.strokeStyle = `rgba(${color.r.value}, ${color.g.value}, ${color.b.value}, ${color.a.value / 255})`;
ctx.moveTo((boundingBox.x.value + config.cornerRadius.topLeft.value + halfLineWidth) * scale, (boundingBox.y.value + halfLineWidth) * scale);
ctx.lineTo((boundingBox.x.value + boundingBox.width.value - config.cornerRadius.topRight.value - halfLineWidth) * scale, (boundingBox.y.value + halfLineWidth) * scale);
ctx.stroke();
}
// Top Right Corner
if (config.cornerRadius.topRight.value > 0) {
let lineWidth = config.width.top.value;
let halfLineWidth = lineWidth / 2;
ctx.moveTo((boundingBox.x.value + boundingBox.width.value - config.cornerRadius.topRight.value - halfLineWidth) * scale, (boundingBox.y.value + halfLineWidth) * scale);
ctx.lineWidth = lineWidth * scale;
ctx.strokeStyle = `rgba(${color.r.value}, ${color.g.value}, ${color.b.value}, ${color.a.value / 255})`;
ctx.arcTo((boundingBox.x.value + boundingBox.width.value - halfLineWidth) * scale, (boundingBox.y.value + halfLineWidth) * scale, (boundingBox.x.value + boundingBox.width.value - halfLineWidth) * scale, (boundingBox.y.value + config.cornerRadius.topRight.value + halfLineWidth) * scale, config.cornerRadius.topRight.value * scale);
ctx.stroke();
}
// Right border
if (config.width.right.value > 0) {
let lineWidth = config.width.right.value;
let halfLineWidth = lineWidth / 2;
ctx.lineWidth = lineWidth * scale;
ctx.strokeStyle = `rgba(${color.r.value}, ${color.g.value}, ${color.b.value}, ${color.a.value / 255})`;
ctx.moveTo((boundingBox.x.value + boundingBox.width.value - halfLineWidth) * scale, (boundingBox.y.value + config.cornerRadius.topRight.value + halfLineWidth) * scale);
ctx.lineTo((boundingBox.x.value + boundingBox.width.value - halfLineWidth) * scale, (boundingBox.y.value + boundingBox.height.value - config.cornerRadius.topRight.value - halfLineWidth) * scale);
ctx.stroke();
}
// Bottom Right Corner
if (config.cornerRadius.bottomRight.value > 0) {
let lineWidth = config.width.top.value;
let halfLineWidth = lineWidth / 2;
ctx.moveTo((boundingBox.x.value + boundingBox.width.value - halfLineWidth) * scale, (boundingBox.y.value + boundingBox.height.value - config.cornerRadius.bottomRight.value - halfLineWidth) * scale);
ctx.lineWidth = lineWidth * scale;
ctx.strokeStyle = `rgba(${color.r.value}, ${color.g.value}, ${color.b.value}, ${color.a.value / 255})`;
ctx.arcTo((boundingBox.x.value + boundingBox.width.value - halfLineWidth) * scale, (boundingBox.y.value + boundingBox.height.value - halfLineWidth) * scale, (boundingBox.x.value + boundingBox.width.value - config.cornerRadius.bottomRight.value - halfLineWidth) * scale, (boundingBox.y.value + boundingBox.height.value - halfLineWidth) * scale, config.cornerRadius.bottomRight.value * scale);
ctx.stroke();
}
// Bottom Border
if (config.width.bottom.value > 0) {
let lineWidth = config.width.bottom.value;
let halfLineWidth = lineWidth / 2;
ctx.lineWidth = lineWidth * scale;
ctx.strokeStyle = `rgba(${color.r.value}, ${color.g.value}, ${color.b.value}, ${color.a.value / 255})`;
ctx.moveTo((boundingBox.x.value + config.cornerRadius.bottomLeft.value + halfLineWidth) * scale, (boundingBox.y.value + boundingBox.height.value - halfLineWidth) * scale);
ctx.lineTo((boundingBox.x.value + boundingBox.width.value - config.cornerRadius.bottomRight.value - halfLineWidth) * scale, (boundingBox.y.value + boundingBox.height.value - halfLineWidth) * scale);
ctx.stroke();
}
// Bottom Left Corner
if (config.cornerRadius.bottomLeft.value > 0) {
let lineWidth = config.width.bottom.value;
let halfLineWidth = lineWidth / 2;
ctx.moveTo((boundingBox.x.value + config.cornerRadius.bottomLeft.value + halfLineWidth) * scale, (boundingBox.y.value + boundingBox.height.value - halfLineWidth) * scale);
ctx.lineWidth = lineWidth * scale;
ctx.strokeStyle = `rgba(${color.r.value}, ${color.g.value}, ${color.b.value}, ${color.a.value / 255})`;
ctx.arcTo((boundingBox.x.value + halfLineWidth) * scale, (boundingBox.y.value + boundingBox.height.value - halfLineWidth) * scale, (boundingBox.x.value + halfLineWidth) * scale, (boundingBox.y.value + boundingBox.height.value - config.cornerRadius.bottomLeft.value - halfLineWidth) * scale, config.cornerRadius.bottomLeft.value * scale);
ctx.stroke();
}
// Left Border
if (config.width.left.value > 0) {
let lineWidth = config.width.left.value;
let halfLineWidth = lineWidth / 2;
ctx.lineWidth = lineWidth * scale;
ctx.strokeStyle = `rgba(${color.r.value}, ${color.g.value}, ${color.b.value}, ${color.a.value / 255})`;
ctx.moveTo((boundingBox.x.value + halfLineWidth) * scale, (boundingBox.y.value + boundingBox.height.value - config.cornerRadius.bottomLeft.value - halfLineWidth) * scale);
ctx.lineTo((boundingBox.x.value + halfLineWidth) * scale, (boundingBox.y.value + config.cornerRadius.bottomRight.value + halfLineWidth) * scale);
ctx.stroke();
}
ctx.closePath();
break;
}
case (CLAY_RENDER_COMMAND_TYPE_TEXT): {
let config = renderCommand.renderData.text;
let textContents = config.stringContents;
let stringContents = new Uint8Array(memoryDataView.buffer.slice(textContents.chars.value, textContents.chars.value + textContents.length.value));
let fontSize = config.fontSize.value * GLOBAL_FONT_SCALING_FACTOR * scale;
ctx.font = `${fontSize}px ${fontsById[config.fontId.value]}`;
let color = config.textColor;
ctx.textBaseline = 'middle';
ctx.fillStyle = `rgba(${color.r.value}, ${color.g.value}, ${color.b.value}, ${color.a.value / 255})`;
ctx.fillText(textDecoder.decode(stringContents), boundingBox.x.value * scale, (boundingBox.y.value + boundingBox.height.value / 2 + 1) * scale);
break;
}
case (CLAY_RENDER_COMMAND_TYPE_SCISSOR_START): {
window.canvasContext.save();
window.canvasContext.beginPath();
window.canvasContext.rect(boundingBox.x.value * scale, boundingBox.y.value * scale, boundingBox.width.value * scale, boundingBox.height.value * scale);
window.canvasContext.clip();
window.canvasContext.closePath();
break;
}
case (CLAY_RENDER_COMMAND_TYPE_SCISSOR_END): {
window.canvasContext.restore();
break;
}
case (CLAY_RENDER_COMMAND_TYPE_IMAGE): {
let config = renderCommand.renderData.image;
let imageURL = readStructAtAddress(config.imageData.value, stringDefinition);
let src = textDecoder.decode(new Uint8Array(memoryDataView.buffer.slice(imageURL.chars.value, imageURL.chars.value + imageURL.length.value)));
if (!imageCache[src]) {
imageCache[src] = {
image: new Image(),
loaded: false,
}
imageCache[src].image.onload = () => imageCache[src].loaded = true;
imageCache[src].image.src = src;
} else if (imageCache[src].loaded) {
ctx.drawImage(imageCache[src].image, boundingBox.x.value * scale, boundingBox.y.value * scale, boundingBox.width.value * scale, boundingBox.height.value * scale);
}
break;
}
case (CLAY_RENDER_COMMAND_TYPE_CUSTOM): break;
}
}
}
function renderLoop(currentTime) {
const elapsed = currentTime - previousFrameTime;
previousFrameTime = currentTime;
let activeRendererIndex = memoryDataView.getUint32(instance.exports.ACTIVE_RENDERER_INDEX.value, true);
if (activeRendererIndex === 0) {
instance.exports.UpdateDrawFrame(scratchSpaceAddress, window.innerWidth, window.innerHeight, 0, 0, window.mousePositionXThisFrame, window.mousePositionYThisFrame, window.touchDown, window.mouseDown, 0, 0, window.dKeyPressedThisFrame, elapsed / 1000);
} else {
instance.exports.UpdateDrawFrame(scratchSpaceAddress, window.innerWidth, window.innerHeight, window.mouseWheelXThisFrame, window.mouseWheelYThisFrame, window.mousePositionXThisFrame, window.mousePositionYThisFrame, window.touchDown, window.mouseDown, window.arrowKeyDownPressedThisFrame, window.arrowKeyUpPressedThisFrame, window.dKeyPressedThisFrame, elapsed / 1000);
}
let rendererChanged = activeRendererIndex !== window.previousActiveRendererIndex;
switch (activeRendererIndex) {
case 0: {
renderLoopHTML();
if (rendererChanged) {
window.htmlRoot.style.display = 'block';
window.canvasRoot.style.display = 'none';
}
break;
}
case 1: {
renderLoopCanvas();
if (rendererChanged) {
window.htmlRoot.style.display = 'none';
window.canvasRoot.style.display = 'block';
}
break;
}
}
window.previousActiveRendererIndex = activeRendererIndex;
requestAnimationFrame(renderLoop);
window.mouseDownThisFrame = false;
window.arrowKeyUpPressedThisFrame = false;
window.arrowKeyDownPressedThisFrame = false;
window.dKeyPressedThisFrame = false;
}
init();
</script>
<body>
</body>
</html>

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@ -0,0 +1,837 @@
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1" />
<link rel="preload" href="/clay/fonts/Calistoga-Regular.ttf" as="font" type="font/ttf" crossorigin>
<link rel="preload" href="/clay/fonts/Quicksand-Semibold.ttf" as="font" type="font/ttf" crossorigin>
<title>Clay - UI Layout Library</title>
<style>
html, body {
width: 100%;
height: 100%;
overflow: hidden;
padding: 0;
margin: 0;
pointer-events: none;
background: rgb(244, 235, 230);
}
/* Import the font using @font-face */
@font-face {
font-family: 'Calistoga';
font-style: normal;
font-weight: 400;
src: url('/clay/fonts/Calistoga-Regular.ttf') format('truetype');
}
@font-face {
font-family: 'Quicksand';
font-style: normal;
font-weight: 400;
src: url('/clay/fonts/Quicksand-Semibold.ttf') format('truetype');
}
body > canvas {
width: 100%;
height: 100%;
touch-action: none;
}
div, a, img {
position: absolute;
box-sizing: border-box;
-webkit-backface-visibility: hidden;
pointer-events: none;
}
a {
cursor: pointer;
pointer-events: all;
}
.text {
pointer-events: all;
white-space: pre;
}
/* TODO special exception for text selection in debug tools */
[id='2067877626'] > * {
pointer-events: none !important;
}
</style>
</head>
<script type="module">
const CLAY_RENDER_COMMAND_TYPE_NONE = 0;
const CLAY_RENDER_COMMAND_TYPE_RECTANGLE = 1;
const CLAY_RENDER_COMMAND_TYPE_BORDER = 2;
const CLAY_RENDER_COMMAND_TYPE_TEXT = 3;
const CLAY_RENDER_COMMAND_TYPE_IMAGE = 4;
const CLAY_RENDER_COMMAND_TYPE_SCISSOR_START = 5;
const CLAY_RENDER_COMMAND_TYPE_SCISSOR_END = 6;
const CLAY_RENDER_COMMAND_TYPE_CUSTOM = 7;
const GLOBAL_FONT_SCALING_FACTOR = 0.8;
let renderCommandSize = 0;
let scratchSpaceAddress = 8;
let heapSpaceAddress = 0;
let memoryDataView;
let textDecoder = new TextDecoder("utf-8");
let previousFrameTime;
let fontsById = [
'Quicksand',
'Calistoga',
'Quicksand',
'Quicksand',
'Quicksand',
];
let elementCache = {};
let imageCache = {};
let dimensionsDefinition = { type: 'struct', members: [
{name: 'width', type: 'float'},
{name: 'height', type: 'float'},
]};
let colorDefinition = { type: 'struct', members: [
{name: 'r', type: 'float' },
{name: 'g', type: 'float' },
{name: 'b', type: 'float' },
{name: 'a', type: 'float' },
]};
let stringDefinition = { type: 'struct', members: [
{name: 'length', type: 'uint32_t' },
{name: 'chars', type: 'uint32_t' },
]};
let stringSliceDefinition = { type: 'struct', members: [
{name: 'length', type: 'uint32_t' },
{name: 'chars', type: 'uint32_t' },
{name: 'baseChars', type: 'uint32_t' },
]};
let borderWidthDefinition = { type: 'struct', members: [
{name: 'left', type: 'uint16_t'},
{name: 'right', type: 'uint16_t'},
{name: 'top', type: 'uint16_t'},
{name: 'bottom', type: 'uint16_t'},
{name: 'betweenChildren', type: 'uint16_t'},
]};
let cornerRadiusDefinition = { type: 'struct', members: [
{name: 'topLeft', type: 'float'},
{name: 'topRight', type: 'float'},
{name: 'bottomLeft', type: 'float'},
{name: 'bottomRight', type: 'float'},
]};
let textConfigDefinition = { name: 'text', type: 'struct', members: [
{ name: 'textColor', ...colorDefinition },
{ name: 'fontId', type: 'uint16_t' },
{ name: 'fontSize', type: 'uint16_t' },
{ name: 'letterSpacing', type: 'uint16_t' },
{ name: 'lineSpacing', type: 'uint16_t' },
{ name: 'wrapMode', type: 'uint8_t' },
{ name: 'disablePointerEvents', type: 'uint8_t' },
{ name: '_padding', type: 'uint16_t' },
]};
let textRenderDataDefinition = { type: 'struct', members: [
{ name: 'stringContents', ...stringSliceDefinition },
{ name: 'textColor', ...colorDefinition },
{ name: 'fontId', type: 'uint16_t' },
{ name: 'fontSize', type: 'uint16_t' },
{ name: 'letterSpacing', type: 'uint16_t' },
{ name: 'lineHeight', type: 'uint16_t' },
]};
let rectangleRenderDataDefinition = { type: 'struct', members: [
{ name: 'backgroundColor', ...colorDefinition },
{ name: 'cornerRadius', ...cornerRadiusDefinition },
]};
let imageRenderDataDefinition = { type: 'struct', members: [
{ name: 'backgroundColor', ...colorDefinition },
{ name: 'cornerRadius', ...cornerRadiusDefinition },
{ name: 'sourceDimensions', ...dimensionsDefinition },
{ name: 'imageData', type: 'uint32_t' },
]};
let customRenderDataDefinition = { type: 'struct', members: [
{ name: 'backgroundColor', ...colorDefinition },
{ name: 'cornerRadius', ...cornerRadiusDefinition },
{ name: 'customData', type: 'uint32_t' },
]};
let borderRenderDataDefinition = { type: 'struct', members: [
{ name: 'color', ...colorDefinition },
{ name: 'cornerRadius', ...cornerRadiusDefinition },
{ name: 'width', ...borderWidthDefinition },
{ name: 'padding', type: 'uint16_t'}
]};
let scrollRenderDataDefinition = { type: 'struct', members: [
{ name: 'horizontal', type: 'bool' },
{ name: 'vertical', type: 'bool' },
]};
let customHTMLDataDefinition = { type: 'struct', members: [
{ name: 'link', ...stringDefinition },
{ name: 'cursorPointer', type: 'uint8_t' },
{ name: 'disablePointerEvents', type: 'uint8_t' },
]};
let renderCommandDefinition = {
name: 'CLay_RenderCommand',
type: 'struct',
members: [
{ name: 'boundingBox', type: 'struct', members: [
{ name: 'x', type: 'float' },
{ name: 'y', type: 'float' },
{ name: 'width', type: 'float' },
{ name: 'height', type: 'float' },
]},
{ name: 'renderData', type: 'union', members: [
{ name: 'rectangle', ...rectangleRenderDataDefinition },
{ name: 'text', ...textRenderDataDefinition },
{ name: 'image', ...imageRenderDataDefinition },
{ name: 'custom', ...customRenderDataDefinition },
{ name: 'border', ...borderRenderDataDefinition },
{ name: 'scroll', ...scrollRenderDataDefinition },
]},
{ name: 'userData', type: 'uint32_t'},
{ name: 'id', type: 'uint32_t' },
{ name: 'zIndex', type: 'int16_t' },
{ name: 'commandType', type: 'uint8_t' },
{ name: '_padding', type: 'uint8_t' },
]
};
function getStructTotalSize(definition) {
switch(definition.type) {
case 'union':
case 'struct': {
let totalSize = 0;
for (const member of definition.members) {
let result = getStructTotalSize(member);
if (definition.type === 'struct') {
totalSize += result;
} else {
totalSize = Math.max(totalSize, result);
}
}
return totalSize;
}
case 'float': return 4;
case 'uint32_t': return 4;
case 'int32_t': return 4;
case 'uint16_t': return 2;
case 'int16_t': return 2;
case 'uint8_t': return 1;
case 'bool': return 1;
default: {
throw "Unimplemented C data type " + definition.type
}
}
}
function readStructAtAddress(address, definition) {
switch(definition.type) {
case 'union':
case 'struct': {
let struct = { __size: 0 };
for (const member of definition.members) {
let result = readStructAtAddress(address, member);
struct[member.name] = result;
if (definition.type === 'struct') {
struct.__size += result.__size;
address += result.__size;
} else {
struct.__size = Math.max(struct.__size, result.__size);
}
}
return struct;
}
case 'float': return { value: memoryDataView.getFloat32(address, true), __size: 4 };
case 'uint32_t': return { value: memoryDataView.getUint32(address, true), __size: 4 };
case 'int32_t': return { value: memoryDataView.getUint32(address, true), __size: 4 };
case 'uint16_t': return { value: memoryDataView.getUint16(address, true), __size: 2 };
case 'int16_t': return { value: memoryDataView.getInt16(address, true), __size: 2 };
case 'uint8_t': return { value: memoryDataView.getUint8(address, true), __size: 1 };
case 'bool': return { value: memoryDataView.getUint8(address, true), __size: 1 };
default: {
throw "Unimplemented C data type " + definition.type
}
}
}
function getTextDimensions(text, font) {
// re-use canvas object for better performance
window.canvasContext.font = font;
let metrics = window.canvasContext.measureText(text);
return { width: metrics.width, height: metrics.fontBoundingBoxAscent + metrics.fontBoundingBoxDescent };
}
function createMainArena(arenaStructAddress, arenaMemoryAddress) {
let memorySize = instance.exports.Clay_MinMemorySize();
// Last arg is address to store return value
instance.exports.Clay_CreateArenaWithCapacityAndMemory(arenaStructAddress, memorySize, arenaMemoryAddress);
}
async function init() {
await Promise.all(fontsById.map(f => document.fonts.load(`12px "${f}"`)));
window.htmlRoot = document.body.appendChild(document.createElement('div'));
window.canvasRoot = document.body.appendChild(document.createElement('canvas'));
window.canvasContext = window.canvasRoot.getContext("2d");
window.mousePositionXThisFrame = 0;
window.mousePositionYThisFrame = 0;
window.mouseWheelXThisFrame = 0;
window.mouseWheelYThisFrame = 0;
window.touchDown = false;
window.arrowKeyDownPressedThisFrame = false;
window.arrowKeyUpPressedThisFrame = false;
let zeroTimeout = null;
document.addEventListener("wheel", (event) => {
window.mouseWheelXThisFrame = event.deltaX * -0.1;
window.mouseWheelYThisFrame = event.deltaY * -0.1;
clearTimeout(zeroTimeout);
zeroTimeout = setTimeout(() => {
window.mouseWheelXThisFrame = 0;
window.mouseWheelYThisFrame = 0;
}, 10);
});
function handleTouch (event) {
if (event.touches.length === 1) {
window.touchDown = true;
let target = event.target;
let scrollTop = 0;
let scrollLeft = 0;
let activeRendererIndex = memoryDataView.getUint32(instance.exports.ACTIVE_RENDERER_INDEX.value, true);
while (activeRendererIndex !== 1 && target) {
scrollLeft += target.scrollLeft;
scrollTop += target.scrollTop;
target = target.parentElement;
}
window.mousePositionXThisFrame = event.changedTouches[0].pageX + scrollLeft;
window.mousePositionYThisFrame = event.changedTouches[0].pageY + scrollTop;
}
}
document.addEventListener("touchstart", handleTouch);
document.addEventListener("touchmove", handleTouch);
document.addEventListener("touchend", () => {
window.touchDown = false;
window.mousePositionXThisFrame = 0;
window.mousePositionYThisFrame = 0;
})
document.addEventListener("mousemove", (event) => {
let target = event.target;
let scrollTop = 0;
let scrollLeft = 0;
let activeRendererIndex = memoryDataView.getUint32(instance.exports.ACTIVE_RENDERER_INDEX.value, true);
while (activeRendererIndex !== 1 && target) {
scrollLeft += target.scrollLeft;
scrollTop += target.scrollTop;
target = target.parentElement;
}
window.mousePositionXThisFrame = event.x + scrollLeft;
window.mousePositionYThisFrame = event.y + scrollTop;
});
document.addEventListener("mousedown", (event) => {
window.mouseDown = true;
window.mouseDownThisFrame = true;
});
document.addEventListener("mouseup", (event) => {
window.mouseDown = false;
});
document.addEventListener("keydown", (event) => {
if (event.key === "ArrowDown") {
window.arrowKeyDownPressedThisFrame = true;
}
if (event.key === "ArrowUp") {
window.arrowKeyUpPressedThisFrame = true;
}
if (event.key === "d") {
window.dKeyPressedThisFrame = true;
}
});
const importObject = {
clay: {
measureTextFunction: (addressOfDimensions, textToMeasure, addressOfConfig, userData) => {
let stringLength = memoryDataView.getUint32(textToMeasure, true);
let pointerToString = memoryDataView.getUint32(textToMeasure + 4, true);
let textConfig = readStructAtAddress(addressOfConfig, textConfigDefinition);
let textDecoder = new TextDecoder("utf-8");
let text = textDecoder.decode(memoryDataView.buffer.slice(pointerToString, pointerToString + stringLength));
let sourceDimensions = getTextDimensions(text, `${Math.round(textConfig.fontSize.value * GLOBAL_FONT_SCALING_FACTOR)}px ${fontsById[textConfig.fontId.value]}`);
memoryDataView.setFloat32(addressOfDimensions, sourceDimensions.width, true);
memoryDataView.setFloat32(addressOfDimensions + 4, sourceDimensions.height, true);
},
queryScrollOffsetFunction: (addressOfOffset, elementId) => {
let container = document.getElementById(elementId.toString());
if (container) {
memoryDataView.setFloat32(addressOfOffset, -container.scrollLeft, true);
memoryDataView.setFloat32(addressOfOffset + 4, -container.scrollTop, true);
}
},
},
};
const { instance } = await WebAssembly.instantiateStreaming(
fetch("/clay/index.wasm"), importObject
);
memoryDataView = new DataView(new Uint8Array(instance.exports.memory.buffer).buffer);
scratchSpaceAddress = instance.exports.__heap_base.value;
let clayScratchSpaceAddress = instance.exports.__heap_base.value + 1024;
heapSpaceAddress = instance.exports.__heap_base.value + 2048;
let arenaAddress = scratchSpaceAddress + 8;
window.instance = instance;
createMainArena(arenaAddress, heapSpaceAddress);
memoryDataView.setFloat32(instance.exports.__heap_base.value, window.innerWidth, true);
memoryDataView.setFloat32(instance.exports.__heap_base.value + 4, window.innerHeight, true);
instance.exports.Clay_Initialize(arenaAddress, instance.exports.__heap_base.value);
instance.exports.SetScratchMemory(arenaAddress, clayScratchSpaceAddress);
renderCommandSize = getStructTotalSize(renderCommandDefinition);
renderLoop();
}
function MemoryIsDifferent(one, two, length) {
for (let i = 0; i < length; i++) {
if (one[i] !== two[i]) {
return true;
}
}
return false;
}
function SetElementBackgroundColorAndRadius(element, cornerRadius, backgroundColor) {
element.style.backgroundColor = `rgba(${backgroundColor.r.value}, ${backgroundColor.g.value}, ${backgroundColor.b.value}, ${backgroundColor.a.value / 255})`;
if (cornerRadius.topLeft.value > 0) {
element.style.borderTopLeftRadius = cornerRadius.topLeft.value + 'px';
}
if (cornerRadius.topRight.value > 0) {
element.style.borderTopRightRadius = cornerRadius.topRight.value + 'px';
}
if (cornerRadius.bottomLeft.value > 0) {
element.style.borderBottomLeftRadius = cornerRadius.bottomLeft.value + 'px';
}
if (cornerRadius.bottomRight.value > 0) {
element.style.borderBottomRightRadius = cornerRadius.bottomRight.value + 'px';
}
}
function renderLoopHTML() {
let capacity = memoryDataView.getInt32(scratchSpaceAddress, true);
let length = memoryDataView.getInt32(scratchSpaceAddress + 4, true);
let arrayOffset = memoryDataView.getUint32(scratchSpaceAddress + 8, true);
let scissorStack = [{ nextAllocation: { x: 0, y: 0 }, element: htmlRoot, nextElementIndex: 0 }];
let previousId = 0;
for (let i = 0; i < length; i++, arrayOffset += renderCommandSize) {
let entireRenderCommandMemory = new Uint8Array(memoryDataView.buffer.slice(arrayOffset, arrayOffset + renderCommandSize));
let renderCommand = readStructAtAddress(arrayOffset, renderCommandDefinition);
let parentElement = scissorStack[scissorStack.length - 1];
let element = null;
let isMultiConfigElement = previousId === renderCommand.id.value;
if (!elementCache[renderCommand.id.value]) {
let elementType = 'div';
switch (renderCommand.commandType.value & 0xff) {
case CLAY_RENDER_COMMAND_TYPE_RECTANGLE: {
// if (readStructAtAddress(renderCommand.renderData.rectangle.value, rectangleRenderDataDefinition).link.length.value > 0) { TODO reimplement links
// elementType = 'a';
// }
break;
}
case CLAY_RENDER_COMMAND_TYPE_IMAGE: {
elementType = 'img'; break;
}
default: break;
}
element = document.createElement(elementType);
element.id = renderCommand.id.value;
if (renderCommand.commandType.value === CLAY_RENDER_COMMAND_TYPE_SCISSOR_START) {
element.style.overflow = 'hidden';
}
elementCache[renderCommand.id.value] = {
exists: true,
element: element,
previousMemoryCommand: new Uint8Array(0),
previousMemoryConfig: new Uint8Array(0),
previousMemoryText: new Uint8Array(0)
};
}
let elementData = elementCache[renderCommand.id.value];
element = elementData.element;
if (!isMultiConfigElement && Array.prototype.indexOf.call(parentElement.element.children, element) !== parentElement.nextElementIndex) {
if (parentElement.nextElementIndex === 0) {
parentElement.element.insertAdjacentElement('afterbegin', element);
} else {
parentElement.element.childNodes[Math.min(parentElement.nextElementIndex - 1, parentElement.element.childNodes.length - 1)].insertAdjacentElement('afterend', element);
}
}
elementData.exists = true;
// Don't get me started. Cheaper to compare the render command memory than to update HTML elements
let dirty = MemoryIsDifferent(elementData.previousMemoryCommand, entireRenderCommandMemory, renderCommandSize) && !isMultiConfigElement;
if (!isMultiConfigElement) {
parentElement.nextElementIndex++;
}
previousId = renderCommand.id.value;
elementData.previousMemoryCommand = entireRenderCommandMemory;
let offsetX = scissorStack.length > 0 ? scissorStack[scissorStack.length - 1].nextAllocation.x : 0;
let offsetY = scissorStack.length > 0 ? scissorStack[scissorStack.length - 1].nextAllocation.y : 0;
if (dirty) {
element.style.transform = `translate(${Math.round(renderCommand.boundingBox.x.value - offsetX)}px, ${Math.round(renderCommand.boundingBox.y.value - offsetY)}px)`
element.style.width = Math.round(renderCommand.boundingBox.width.value) + 'px';
element.style.height = Math.round(renderCommand.boundingBox.height.value) + 'px';
}
// note: commandType is packed to uint8_t and has 3 garbage bytes of padding
switch(renderCommand.commandType.value & 0xff) {
case (CLAY_RENDER_COMMAND_TYPE_NONE): {
break;
}
case (CLAY_RENDER_COMMAND_TYPE_RECTANGLE): {
let config = renderCommand.renderData.rectangle;
let configMemory = JSON.stringify(config);
if (configMemory === elementData.previousMemoryConfig) {
break;
}
SetElementBackgroundColorAndRadius(element, config.cornerRadius, config.backgroundColor);
if (renderCommand.userData.value !== 0) {
let customData = readStructAtAddress(renderCommand.userData.value, customHTMLDataDefinition);
let linkContents = customData.link.length.value > 0 ? textDecoder.decode(new Uint8Array(memoryDataView.buffer.slice(customData.link.chars.value, customData.link.chars.value + customData.link.length.value))) : 0;
memoryDataView.setUint32(0, renderCommand.id.value, true);
if (linkContents.length > 0 && (window.mouseDownThisFrame || window.touchDown) && instance.exports.Clay_PointerOver(0)) {
window.location.href = linkContents;
}
if (linkContents.length > 0) {
element.href = linkContents;
}
if (linkContents.length > 0 || customData.cursorPointer.value) {
element.style.pointerEvents = 'all';
element.style.cursor = 'pointer';
}
}
elementData.previousMemoryConfig = configMemory;
break;
}
case (CLAY_RENDER_COMMAND_TYPE_BORDER): {
let config = renderCommand.renderData.border;
let configMemory = JSON.stringify(config);
if (configMemory === elementData.previousMemoryConfig) {
break;
}
let color = config.color;
elementData.previousMemoryConfig = configMemory;
if (config.width.left.value > 0) {
element.style.borderLeft = `${config.width.left.value}px solid rgba(${color.r.value}, ${color.g.value}, ${color.b.value}, ${color.a.value / 255})`
}
if (config.width.right.value > 0) {
element.style.borderRight = `${config.width.right.value}px solid rgba(${color.r.value}, ${color.g.value}, ${color.b.value}, ${color.a.value / 255})`
}
if (config.width.top.value > 0) {
element.style.borderTop = `${config.width.top.value}px solid rgba(${color.r.value}, ${color.g.value}, ${color.b.value}, ${color.a.value / 255})`
}
if (config.width.bottom.value > 0) {
element.style.borderBottom = `${config.width.bottom.value}px solid rgba(${color.r.value}, ${color.g.value}, ${color.b.value}, ${color.a.value / 255})`
}
if (config.cornerRadius.topLeft.value > 0) {
element.style.borderTopLeftRadius = config.cornerRadius.topLeft.value + 'px';
}
if (config.cornerRadius.topRight.value > 0) {
element.style.borderTopRightRadius = config.cornerRadius.topRight.value + 'px';
}
if (config.cornerRadius.bottomLeft.value > 0) {
element.style.borderBottomLeftRadius = config.cornerRadius.bottomLeft.value + 'px';
}
if (config.cornerRadius.bottomRight.value > 0) {
element.style.borderBottomRightRadius = config.cornerRadius.bottomRight.value + 'px';
}
break;
}
case (CLAY_RENDER_COMMAND_TYPE_TEXT): {
let config = renderCommand.renderData.text;
let customData = readStructAtAddress(renderCommand.userData.value, customHTMLDataDefinition);
let configMemory = JSON.stringify(config);
let stringContents = new Uint8Array(memoryDataView.buffer.slice(config.stringContents.chars.value, config.stringContents.chars.value + config.stringContents.length.value));
if (configMemory !== elementData.previousMemoryConfig) {
element.className = 'text';
let textColor = config.textColor;
let fontSize = Math.round(config.fontSize.value * GLOBAL_FONT_SCALING_FACTOR);
element.style.color = `rgba(${textColor.r.value}, ${textColor.g.value}, ${textColor.b.value}, ${textColor.a.value})`;
element.style.fontFamily = fontsById[config.fontId.value];
element.style.fontSize = fontSize + 'px';
element.style.pointerEvents = customData.disablePointerEvents.value ? 'none' : 'all';
elementData.previousMemoryConfig = configMemory;
}
if (stringContents.length !== elementData.previousMemoryText.length || MemoryIsDifferent(stringContents, elementData.previousMemoryText, stringContents.length)) {
element.innerHTML = textDecoder.decode(stringContents);
}
elementData.previousMemoryText = stringContents;
break;
}
case (CLAY_RENDER_COMMAND_TYPE_SCISSOR_START): {
scissorStack.push({ nextAllocation: { x: renderCommand.boundingBox.x.value, y: renderCommand.boundingBox.y.value }, element, nextElementIndex: 0 });
let config = renderCommand.renderData.scroll;
let configMemory = JSON.stringify(config);
if (configMemory === elementData.previousMemoryConfig) {
break;
}
if (config.horizontal.value) {
element.style.overflowX = 'scroll';
element.style.pointerEvents = 'auto';
}
if (config.vertical.value) {
element.style.overflowY = 'scroll';
element.style.pointerEvents = 'auto';
}
elementData.previousMemoryConfig = configMemory;
break;
}
case (CLAY_RENDER_COMMAND_TYPE_SCISSOR_END): {
scissorStack.splice(scissorStack.length - 1, 1);
break;
}
case (CLAY_RENDER_COMMAND_TYPE_IMAGE): {
let config = renderCommand.renderData.image;
let imageURL = readStructAtAddress(config.imageData.value, stringDefinition);
let srcContents = new Uint8Array(memoryDataView.buffer.slice(imageURL.chars.value, imageURL.chars.value + imageURL.length.value));
if (srcContents.length !== elementData.previousMemoryText.length || MemoryIsDifferent(srcContents, elementData.previousMemoryText, srcContents.length)) {
element.src = textDecoder.decode(srcContents);
}
elementData.previousMemoryText = srcContents;
break;
}
case (CLAY_RENDER_COMMAND_TYPE_CUSTOM): break;
default: {
console.log("Error: unhandled render command");
}
}
}
for (const key of Object.keys(elementCache)) {
if (elementCache[key].exists) {
elementCache[key].exists = false;
} else {
elementCache[key].element.remove();
delete elementCache[key];
}
}
}
function renderLoopCanvas() {
// Note: Rendering to canvas needs to be scaled up by window.devicePixelRatio in both width and height.
// e.g. if we're working on a device where devicePixelRatio is 2, we need to render
// everything at width^2 x height^2 resolution, then scale back down with css to get the correct pixel density.
let capacity = memoryDataView.getUint32(scratchSpaceAddress, true);
let length = memoryDataView.getUint32(scratchSpaceAddress + 4, true);
let arrayOffset = memoryDataView.getUint32(scratchSpaceAddress + 8, true);
window.canvasRoot.width = window.innerWidth * window.devicePixelRatio;
window.canvasRoot.height = window.innerHeight * window.devicePixelRatio;
window.canvasRoot.style.width = window.innerWidth + 'px';
window.canvasRoot.style.height = window.innerHeight + 'px';
let ctx = window.canvasContext;
let scale = window.devicePixelRatio;
for (let i = 0; i < length; i++, arrayOffset += renderCommandSize) {
let renderCommand = readStructAtAddress(arrayOffset, renderCommandDefinition);
let boundingBox = renderCommand.boundingBox;
// note: commandType is packed to uint8_t and has 3 garbage bytes of padding
switch(renderCommand.commandType.value & 0xff) {
case (CLAY_RENDER_COMMAND_TYPE_NONE): {
break;
}
case (CLAY_RENDER_COMMAND_TYPE_RECTANGLE): {
let config = renderCommand.renderData.rectangle;
let color = config.backgroundColor;
ctx.beginPath();
window.canvasContext.fillStyle = `rgba(${color.r.value}, ${color.g.value}, ${color.b.value}, ${color.a.value / 255})`;
window.canvasContext.roundRect(
boundingBox.x.value * scale, // x
boundingBox.y.value * scale, // y
boundingBox.width.value * scale, // width
boundingBox.height.value * scale,
[config.cornerRadius.topLeft.value * scale, config.cornerRadius.topRight.value * scale, config.cornerRadius.bottomRight.value * scale, config.cornerRadius.bottomLeft.value * scale]) // height;
ctx.fill();
ctx.closePath();
// Handle link clicks
if (renderCommand.userData.value !== 0) {
let customData = readStructAtAddress(renderCommand.userData.value, customHTMLDataDefinition);
let linkContents = customData.link.length.value > 0 ? textDecoder.decode(new Uint8Array(memoryDataView.buffer.slice(customData.link.chars.value, customData.link.chars.value + customData.link.length.value))) : 0;
memoryDataView.setUint32(0, renderCommand.id.value, true);
if (linkContents.length > 0 && (window.mouseDownThisFrame || window.touchDown) && instance.exports.Clay_PointerOver(0)) {
window.location.href = linkContents;
}
}
break;
}
case (CLAY_RENDER_COMMAND_TYPE_BORDER): {
let config = renderCommand.renderData.border;
let color = config.color;
ctx.beginPath();
ctx.moveTo(boundingBox.x.value * scale, boundingBox.y.value * scale);
// Top Left Corner
if (config.cornerRadius.topLeft.value > 0) {
let lineWidth = config.width.top.value;
let halfLineWidth = lineWidth / 2;
ctx.moveTo((boundingBox.x.value + halfLineWidth) * scale, (boundingBox.y.value + config.cornerRadius.topLeft.value + halfLineWidth) * scale);
ctx.lineWidth = lineWidth * scale;
ctx.strokeStyle = `rgba(${color.r.value}, ${color.g.value}, ${color.b.value}, ${color.a.value / 255})`;
ctx.arcTo((boundingBox.x.value + halfLineWidth) * scale, (boundingBox.y.value + halfLineWidth) * scale, (boundingBox.x.value + config.cornerRadius.topLeft.value + halfLineWidth) * scale, (boundingBox.y.value + halfLineWidth) * scale, config.cornerRadius.topLeft.value * scale);
ctx.stroke();
}
// Top border
if (config.width.top.value > 0) {
let lineWidth = config.width.top.value;
let halfLineWidth = lineWidth / 2;
ctx.lineWidth = lineWidth * scale;
ctx.strokeStyle = `rgba(${color.r.value}, ${color.g.value}, ${color.b.value}, ${color.a.value / 255})`;
ctx.moveTo((boundingBox.x.value + config.cornerRadius.topLeft.value + halfLineWidth) * scale, (boundingBox.y.value + halfLineWidth) * scale);
ctx.lineTo((boundingBox.x.value + boundingBox.width.value - config.cornerRadius.topRight.value - halfLineWidth) * scale, (boundingBox.y.value + halfLineWidth) * scale);
ctx.stroke();
}
// Top Right Corner
if (config.cornerRadius.topRight.value > 0) {
let lineWidth = config.width.top.value;
let halfLineWidth = lineWidth / 2;
ctx.moveTo((boundingBox.x.value + boundingBox.width.value - config.cornerRadius.topRight.value - halfLineWidth) * scale, (boundingBox.y.value + halfLineWidth) * scale);
ctx.lineWidth = lineWidth * scale;
ctx.strokeStyle = `rgba(${color.r.value}, ${color.g.value}, ${color.b.value}, ${color.a.value / 255})`;
ctx.arcTo((boundingBox.x.value + boundingBox.width.value - halfLineWidth) * scale, (boundingBox.y.value + halfLineWidth) * scale, (boundingBox.x.value + boundingBox.width.value - halfLineWidth) * scale, (boundingBox.y.value + config.cornerRadius.topRight.value + halfLineWidth) * scale, config.cornerRadius.topRight.value * scale);
ctx.stroke();
}
// Right border
if (config.width.right.value > 0) {
let lineWidth = config.width.right.value;
let halfLineWidth = lineWidth / 2;
ctx.lineWidth = lineWidth * scale;
ctx.strokeStyle = `rgba(${color.r.value}, ${color.g.value}, ${color.b.value}, ${color.a.value / 255})`;
ctx.moveTo((boundingBox.x.value + boundingBox.width.value - halfLineWidth) * scale, (boundingBox.y.value + config.cornerRadius.topRight.value + halfLineWidth) * scale);
ctx.lineTo((boundingBox.x.value + boundingBox.width.value - halfLineWidth) * scale, (boundingBox.y.value + boundingBox.height.value - config.cornerRadius.topRight.value - halfLineWidth) * scale);
ctx.stroke();
}
// Bottom Right Corner
if (config.cornerRadius.bottomRight.value > 0) {
let lineWidth = config.width.top.value;
let halfLineWidth = lineWidth / 2;
ctx.moveTo((boundingBox.x.value + boundingBox.width.value - halfLineWidth) * scale, (boundingBox.y.value + boundingBox.height.value - config.cornerRadius.bottomRight.value - halfLineWidth) * scale);
ctx.lineWidth = lineWidth * scale;
ctx.strokeStyle = `rgba(${color.r.value}, ${color.g.value}, ${color.b.value}, ${color.a.value / 255})`;
ctx.arcTo((boundingBox.x.value + boundingBox.width.value - halfLineWidth) * scale, (boundingBox.y.value + boundingBox.height.value - halfLineWidth) * scale, (boundingBox.x.value + boundingBox.width.value - config.cornerRadius.bottomRight.value - halfLineWidth) * scale, (boundingBox.y.value + boundingBox.height.value - halfLineWidth) * scale, config.cornerRadius.bottomRight.value * scale);
ctx.stroke();
}
// Bottom Border
if (config.width.bottom.value > 0) {
let lineWidth = config.width.bottom.value;
let halfLineWidth = lineWidth / 2;
ctx.lineWidth = lineWidth * scale;
ctx.strokeStyle = `rgba(${color.r.value}, ${color.g.value}, ${color.b.value}, ${color.a.value / 255})`;
ctx.moveTo((boundingBox.x.value + config.cornerRadius.bottomLeft.value + halfLineWidth) * scale, (boundingBox.y.value + boundingBox.height.value - halfLineWidth) * scale);
ctx.lineTo((boundingBox.x.value + boundingBox.width.value - config.cornerRadius.bottomRight.value - halfLineWidth) * scale, (boundingBox.y.value + boundingBox.height.value - halfLineWidth) * scale);
ctx.stroke();
}
// Bottom Left Corner
if (config.cornerRadius.bottomLeft.value > 0) {
let lineWidth = config.width.bottom.value;
let halfLineWidth = lineWidth / 2;
ctx.moveTo((boundingBox.x.value + config.cornerRadius.bottomLeft.value + halfLineWidth) * scale, (boundingBox.y.value + boundingBox.height.value - halfLineWidth) * scale);
ctx.lineWidth = lineWidth * scale;
ctx.strokeStyle = `rgba(${color.r.value}, ${color.g.value}, ${color.b.value}, ${color.a.value / 255})`;
ctx.arcTo((boundingBox.x.value + halfLineWidth) * scale, (boundingBox.y.value + boundingBox.height.value - halfLineWidth) * scale, (boundingBox.x.value + halfLineWidth) * scale, (boundingBox.y.value + boundingBox.height.value - config.cornerRadius.bottomLeft.value - halfLineWidth) * scale, config.cornerRadius.bottomLeft.value * scale);
ctx.stroke();
}
// Left Border
if (config.width.left.value > 0) {
let lineWidth = config.width.left.value;
let halfLineWidth = lineWidth / 2;
ctx.lineWidth = lineWidth * scale;
ctx.strokeStyle = `rgba(${color.r.value}, ${color.g.value}, ${color.b.value}, ${color.a.value / 255})`;
ctx.moveTo((boundingBox.x.value + halfLineWidth) * scale, (boundingBox.y.value + boundingBox.height.value - config.cornerRadius.bottomLeft.value - halfLineWidth) * scale);
ctx.lineTo((boundingBox.x.value + halfLineWidth) * scale, (boundingBox.y.value + config.cornerRadius.bottomRight.value + halfLineWidth) * scale);
ctx.stroke();
}
ctx.closePath();
break;
}
case (CLAY_RENDER_COMMAND_TYPE_TEXT): {
let config = renderCommand.renderData.text;
let textContents = config.stringContents;
let stringContents = new Uint8Array(memoryDataView.buffer.slice(textContents.chars.value, textContents.chars.value + textContents.length.value));
let fontSize = config.fontSize.value * GLOBAL_FONT_SCALING_FACTOR * scale;
ctx.font = `${fontSize}px ${fontsById[config.fontId.value]}`;
let color = config.textColor;
ctx.textBaseline = 'middle';
ctx.fillStyle = `rgba(${color.r.value}, ${color.g.value}, ${color.b.value}, ${color.a.value / 255})`;
ctx.fillText(textDecoder.decode(stringContents), boundingBox.x.value * scale, (boundingBox.y.value + boundingBox.height.value / 2 + 1) * scale);
break;
}
case (CLAY_RENDER_COMMAND_TYPE_SCISSOR_START): {
window.canvasContext.save();
window.canvasContext.beginPath();
window.canvasContext.rect(boundingBox.x.value * scale, boundingBox.y.value * scale, boundingBox.width.value * scale, boundingBox.height.value * scale);
window.canvasContext.clip();
window.canvasContext.closePath();
break;
}
case (CLAY_RENDER_COMMAND_TYPE_SCISSOR_END): {
window.canvasContext.restore();
break;
}
case (CLAY_RENDER_COMMAND_TYPE_IMAGE): {
let config = renderCommand.renderData.image;
let imageURL = readStructAtAddress(config.imageData.value, stringDefinition);
let src = textDecoder.decode(new Uint8Array(memoryDataView.buffer.slice(imageURL.chars.value, imageURL.chars.value + imageURL.length.value)));
if (!imageCache[src]) {
imageCache[src] = {
image: new Image(),
loaded: false,
}
imageCache[src].image.onload = () => imageCache[src].loaded = true;
imageCache[src].image.src = src;
} else if (imageCache[src].loaded) {
ctx.drawImage(imageCache[src].image, boundingBox.x.value * scale, boundingBox.y.value * scale, boundingBox.width.value * scale, boundingBox.height.value * scale);
}
break;
}
case (CLAY_RENDER_COMMAND_TYPE_CUSTOM): break;
}
}
}
function renderLoop(currentTime) {
const elapsed = currentTime - previousFrameTime;
previousFrameTime = currentTime;
let activeRendererIndex = memoryDataView.getUint32(instance.exports.ACTIVE_RENDERER_INDEX.value, true);
if (activeRendererIndex === 0) {
instance.exports.UpdateDrawFrame(scratchSpaceAddress, window.innerWidth, window.innerHeight, 0, 0, window.mousePositionXThisFrame, window.mousePositionYThisFrame, window.touchDown, window.mouseDown, 0, 0, window.dKeyPressedThisFrame, elapsed / 1000);
} else {
instance.exports.UpdateDrawFrame(scratchSpaceAddress, window.innerWidth, window.innerHeight, window.mouseWheelXThisFrame, window.mouseWheelYThisFrame, window.mousePositionXThisFrame, window.mousePositionYThisFrame, window.touchDown, window.mouseDown, window.arrowKeyDownPressedThisFrame, window.arrowKeyUpPressedThisFrame, window.dKeyPressedThisFrame, elapsed / 1000);
}
let rendererChanged = activeRendererIndex !== window.previousActiveRendererIndex;
switch (activeRendererIndex) {
case 0: {
renderLoopHTML();
if (rendererChanged) {
window.htmlRoot.style.display = 'block';
window.canvasRoot.style.display = 'none';
}
break;
}
case 1: {
renderLoopCanvas();
if (rendererChanged) {
window.htmlRoot.style.display = 'none';
window.canvasRoot.style.display = 'block';
}
break;
}
}
window.previousActiveRendererIndex = activeRendererIndex;
requestAnimationFrame(renderLoop);
window.mouseDownThisFrame = false;
window.arrowKeyUpPressedThisFrame = false;
window.arrowKeyDownPressedThisFrame = false;
window.dKeyPressedThisFrame = false;
}
init();
</script>
<body>
</body>
</html>

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#define CLAY_IMPLEMENTATION
#include "../../clay.h"
double windowWidth = 1024, windowHeight = 768;
float modelPageOneZRotation = 0;
uint32_t ACTIVE_RENDERER_INDEX = 0;
const uint32_t FONT_ID_BODY_16 = 0;
const uint32_t FONT_ID_TITLE_56 = 1;
const uint32_t FONT_ID_BODY_24 = 2;
const uint32_t FONT_ID_BODY_36 = 3;
const uint32_t FONT_ID_TITLE_36 = 4;
const uint32_t FONT_ID_MONOSPACE_24 = 5;
const Clay_Color COLOR_LIGHT = (Clay_Color) {244, 235, 230, 255};
const Clay_Color COLOR_LIGHT_HOVER = (Clay_Color) {224, 215, 210, 255};
const Clay_Color COLOR_RED = (Clay_Color) {168, 66, 28, 255};
const Clay_Color COLOR_RED_HOVER = (Clay_Color) {148, 46, 8, 255};
const Clay_Color COLOR_ORANGE = (Clay_Color) {225, 138, 50, 255};
const Clay_Color COLOR_BLUE = (Clay_Color) {111, 173, 162, 255};
// Colors for top stripe
const Clay_Color COLOR_TOP_BORDER_1 = (Clay_Color) {168, 66, 28, 255};
const Clay_Color COLOR_TOP_BORDER_2 = (Clay_Color) {223, 110, 44, 255};
const Clay_Color COLOR_TOP_BORDER_3 = (Clay_Color) {225, 138, 50, 255};
const Clay_Color COLOR_TOP_BORDER_4 = (Clay_Color) {236, 189, 80, 255};
const Clay_Color COLOR_TOP_BORDER_5 = (Clay_Color) {240, 213, 137, 255};
const Clay_Color COLOR_BLOB_BORDER_1 = (Clay_Color) {168, 66, 28, 255};
const Clay_Color COLOR_BLOB_BORDER_2 = (Clay_Color) {203, 100, 44, 255};
const Clay_Color COLOR_BLOB_BORDER_3 = (Clay_Color) {225, 138, 50, 255};
const Clay_Color COLOR_BLOB_BORDER_4 = (Clay_Color) {236, 159, 70, 255};
const Clay_Color COLOR_BLOB_BORDER_5 = (Clay_Color) {240, 189, 100, 255};
#define RAYLIB_VECTOR2_TO_CLAY_VECTOR2(vector) (Clay_Vector2) { .x = (vector).x, .y = (vector).y }
Clay_TextElementConfig headerTextConfig = (Clay_TextElementConfig) { .fontId = 2, .fontSize = 24, .textColor = {61, 26, 5, 255} };
Clay_TextElementConfig blobTextConfig = (Clay_TextElementConfig) { .fontId = 2, .fontSize = 30, .textColor = {244, 235, 230, 255} };
typedef struct {
void* memory;
uintptr_t offset;
} Arena;
Arena frameArena = {};
typedef struct {
Clay_String link;
bool cursorPointer;
bool disablePointerEvents;
} CustomHTMLData;
CustomHTMLData* FrameAllocateCustomData(CustomHTMLData data) {
CustomHTMLData *customData = (CustomHTMLData *)(frameArena.memory + frameArena.offset);
*customData = data;
frameArena.offset += sizeof(CustomHTMLData);
return customData;
}
Clay_String* FrameAllocateString(Clay_String string) {
Clay_String *allocated = (Clay_String *)(frameArena.memory + frameArena.offset);
*allocated = string;
frameArena.offset += sizeof(Clay_String);
return allocated;
}
void LandingPageBlob(int index, int fontSize, Clay_Color color, Clay_String text, Clay_String imageURL) {
CLAY({ .id = CLAY_IDI("HeroBlob", index), .layout = { .sizing = { CLAY_SIZING_GROW(.max = 480) }, .padding = CLAY_PADDING_ALL(16), .childGap = 16, .childAlignment = {.y = CLAY_ALIGN_Y_CENTER} }, .border = { .color = color, .width = { 2, 2, 2, 2 }}, .cornerRadius = CLAY_CORNER_RADIUS(10) }) {
CLAY({ .id = CLAY_IDI("CheckImage", index), .layout = { .sizing = { CLAY_SIZING_FIXED(32) } }, .image = { .sourceDimensions = { 128, 128 }, .imageData = FrameAllocateString(imageURL) } }) {}
CLAY_TEXT(text, CLAY_TEXT_CONFIG({ .fontSize = fontSize, .fontId = FONT_ID_BODY_24, .textColor = color }));
}
}
void LandingPageDesktop() {
CLAY({ .id = CLAY_ID("LandingPage1Desktop"), .layout = { .sizing = { .width = CLAY_SIZING_GROW(0), .height = CLAY_SIZING_FIT(.min = windowHeight - 70) }, .childAlignment = {.y = CLAY_ALIGN_Y_CENTER}, .padding = { 50, 50 } } }) {
CLAY({ .id = CLAY_ID("LandingPage1"), .layout = { .sizing = { CLAY_SIZING_GROW(0), CLAY_SIZING_GROW(0) }, .childAlignment = {.y = CLAY_ALIGN_Y_CENTER}, .padding = CLAY_PADDING_ALL(32), .childGap = 32 }, .border = { .width = { .left = 2, .right = 2 }, .color = COLOR_RED } }) {
CLAY({ .id = CLAY_ID("LeftText"), .layout = { .sizing = { .width = CLAY_SIZING_PERCENT(0.55f) }, .layoutDirection = CLAY_TOP_TO_BOTTOM, .childGap = 8 } }) {
CLAY_TEXT(CLAY_STRING("Clay is a flex-box style UI auto layout library in C, with declarative syntax and microsecond performance."), CLAY_TEXT_CONFIG({ .fontSize = 56, .fontId = FONT_ID_TITLE_56, .textColor = COLOR_RED }));
CLAY({ .id = CLAY_ID("LandingPageSpacer"), .layout = { .sizing = { .width = CLAY_SIZING_GROW(0), .height = CLAY_SIZING_FIXED(32) } } }) {}
CLAY_TEXT(CLAY_STRING("Clay is laying out this webpage right now!"), CLAY_TEXT_CONFIG({ .fontSize = 36, .fontId = FONT_ID_TITLE_36, .textColor = COLOR_ORANGE }));
}
CLAY({ .id = CLAY_ID("HeroImageOuter"), .layout = { .layoutDirection = CLAY_TOP_TO_BOTTOM, .sizing = { .width = CLAY_SIZING_PERCENT(0.45f) }, .childAlignment = { CLAY_ALIGN_X_CENTER }, .childGap = 16 } }) {
LandingPageBlob(1, 32, COLOR_BLOB_BORDER_5, CLAY_STRING("High performance"), CLAY_STRING("/clay/images/check_5.png"));
LandingPageBlob(2, 32, COLOR_BLOB_BORDER_4, CLAY_STRING("Flexbox-style responsive layout"), CLAY_STRING("/clay/images/check_4.png"));
LandingPageBlob(3, 32, COLOR_BLOB_BORDER_3, CLAY_STRING("Declarative syntax"), CLAY_STRING("/clay/images/check_3.png"));
LandingPageBlob(4, 32, COLOR_BLOB_BORDER_2, CLAY_STRING("Single .h file for C/C++"), CLAY_STRING("/clay/images/check_2.png"));
LandingPageBlob(5, 32, COLOR_BLOB_BORDER_1, CLAY_STRING("Compile to 15kb .wasm"), CLAY_STRING("/clay/images/check_1.png"));
}
}
}
}
void LandingPageMobile() {
CLAY({ .id = CLAY_ID("LandingPage1Mobile"), .layout = { .layoutDirection = CLAY_TOP_TO_BOTTOM, .sizing = { .width = CLAY_SIZING_GROW(0), .height = CLAY_SIZING_FIT(.min = windowHeight - 70) }, .childAlignment = {CLAY_ALIGN_X_CENTER, .y = CLAY_ALIGN_Y_CENTER}, .padding = { 16, 16, 32, 32 }, .childGap = 32 } }) {
CLAY({ .id = CLAY_ID("LeftText"), .layout = { .sizing = { .width = CLAY_SIZING_GROW(0) }, .layoutDirection = CLAY_TOP_TO_BOTTOM, .childGap = 8 } }) {
CLAY_TEXT(CLAY_STRING("Clay is a flex-box style UI auto layout library in C, with declarative syntax and microsecond performance."), CLAY_TEXT_CONFIG({ .fontSize = 48, .fontId = FONT_ID_TITLE_56, .textColor = COLOR_RED }));
CLAY({ .id = CLAY_ID("LandingPageSpacer"), .layout = { .sizing = { .width = CLAY_SIZING_GROW(0), .height = CLAY_SIZING_FIXED(32) } } }) {}
CLAY_TEXT(CLAY_STRING("Clay is laying out this webpage right now!"), CLAY_TEXT_CONFIG({ .fontSize = 32, .fontId = FONT_ID_TITLE_36, .textColor = COLOR_ORANGE }));
}
CLAY({ .id = CLAY_ID("HeroImageOuter"), .layout = { .layoutDirection = CLAY_TOP_TO_BOTTOM, .sizing = { .width = CLAY_SIZING_GROW(0) }, .childAlignment = { CLAY_ALIGN_X_CENTER }, .childGap = 16 } }) {
LandingPageBlob(1, 28, COLOR_BLOB_BORDER_5, CLAY_STRING("High performance"), CLAY_STRING("/clay/images/check_5.png"));
LandingPageBlob(2, 28, COLOR_BLOB_BORDER_4, CLAY_STRING("Flexbox-style responsive layout"), CLAY_STRING("/clay/images/check_4.png"));
LandingPageBlob(3, 28, COLOR_BLOB_BORDER_3, CLAY_STRING("Declarative syntax"), CLAY_STRING("/clay/images/check_3.png"));
LandingPageBlob(4, 28, COLOR_BLOB_BORDER_2, CLAY_STRING("Single .h file for C/C++"), CLAY_STRING("/clay/images/check_2.png"));
LandingPageBlob(5, 28, COLOR_BLOB_BORDER_1, CLAY_STRING("Compile to 15kb .wasm"), CLAY_STRING("/clay/images/check_1.png"));
}
}
}
void FeatureBlocksDesktop() {
CLAY({ .id = CLAY_ID("FeatureBlocksOuter"), .layout = { .sizing = { CLAY_SIZING_GROW(0) } } }) {
CLAY({ .id = CLAY_ID("FeatureBlocksInner"), .layout = { .sizing = { CLAY_SIZING_GROW(0) }, .childAlignment = { .y = CLAY_ALIGN_Y_CENTER } }, .border = { .width = { .betweenChildren = 2 }, .color = COLOR_RED } }) {
Clay_TextElementConfig *textConfig = CLAY_TEXT_CONFIG({ .fontSize = 24, .fontId = FONT_ID_BODY_24, .textColor = COLOR_RED });
CLAY({ .id = CLAY_ID("HFileBoxOuter"), .layout = { .layoutDirection = CLAY_TOP_TO_BOTTOM, .sizing = { CLAY_SIZING_PERCENT(0.5f) }, .childAlignment = {0, CLAY_ALIGN_Y_CENTER}, .padding = {50, 50, 32, 32}, .childGap = 8 } }) {
CLAY({ .id = CLAY_ID("HFileIncludeOuter"), .layout = { .padding = {8, 4} }, .backgroundColor = COLOR_RED, .cornerRadius = CLAY_CORNER_RADIUS(8) }) {
CLAY_TEXT(CLAY_STRING("#include clay.h"), CLAY_TEXT_CONFIG({ .fontSize = 24, .fontId = FONT_ID_BODY_24, .textColor = COLOR_LIGHT }));
}
CLAY_TEXT(CLAY_STRING("~2000 lines of C99."), textConfig);
CLAY_TEXT(CLAY_STRING("Zero dependencies, including no C standard library."), textConfig);
}
CLAY({ .id = CLAY_ID("BringYourOwnRendererOuter"), .layout = { .layoutDirection = CLAY_TOP_TO_BOTTOM, .sizing = { CLAY_SIZING_PERCENT(0.5f) }, .childAlignment = {0, CLAY_ALIGN_Y_CENTER}, .padding = {50, 50, 32, 32}, .childGap = 8 } }) {
CLAY_TEXT(CLAY_STRING("Renderer agnostic."), CLAY_TEXT_CONFIG({ .fontId = FONT_ID_BODY_24, .fontSize = 24, .textColor = COLOR_ORANGE }));
CLAY_TEXT(CLAY_STRING("Layout with clay, then render with Raylib, WebGL Canvas or even as HTML."), textConfig);
CLAY_TEXT(CLAY_STRING("Flexible output for easy compositing in your custom engine or environment."), textConfig);
}
}
}
}
void FeatureBlocksMobile() {
CLAY({ .id = CLAY_ID("FeatureBlocksInner"), .layout = { .layoutDirection = CLAY_TOP_TO_BOTTOM, .sizing = { CLAY_SIZING_GROW(0) } }, .border = { .width = { .betweenChildren = 2 }, .color = COLOR_RED } }) {
Clay_TextElementConfig *textConfig = CLAY_TEXT_CONFIG({ .fontSize = 24, .fontId = FONT_ID_BODY_24, .textColor = COLOR_RED });
CLAY({ .id = CLAY_ID("HFileBoxOuter"), .layout = { .layoutDirection = CLAY_TOP_TO_BOTTOM, .sizing = { CLAY_SIZING_GROW(0) }, .childAlignment = {0, CLAY_ALIGN_Y_CENTER}, .padding = {16, 16, 32, 32}, .childGap = 8 } }) {
CLAY({ .id = CLAY_ID("HFileIncludeOuter"), .layout = { .padding = {8, 4} }, .backgroundColor = COLOR_RED, .cornerRadius = CLAY_CORNER_RADIUS(8) }) {
CLAY_TEXT(CLAY_STRING("#include clay.h"), CLAY_TEXT_CONFIG({ .fontSize = 24, .fontId = FONT_ID_BODY_24, .textColor = COLOR_LIGHT }));
}
CLAY_TEXT(CLAY_STRING("~2000 lines of C99."), textConfig);
CLAY_TEXT(CLAY_STRING("Zero dependencies, including no C standard library."), textConfig);
}
CLAY({ .id = CLAY_ID("BringYourOwnRendererOuter"), .layout = { .layoutDirection = CLAY_TOP_TO_BOTTOM, .sizing = { CLAY_SIZING_GROW(0) }, .childAlignment = {0, CLAY_ALIGN_Y_CENTER}, .padding = {16, 16, 32, 32}, .childGap = 8 } }) {
CLAY_TEXT(CLAY_STRING("Renderer agnostic."), CLAY_TEXT_CONFIG({ .fontId = FONT_ID_BODY_24, .fontSize = 24, .textColor = COLOR_ORANGE }));
CLAY_TEXT(CLAY_STRING("Layout with clay, then render with Raylib, WebGL Canvas or even as HTML."), textConfig);
CLAY_TEXT(CLAY_STRING("Flexible output for easy compositing in your custom engine or environment."), textConfig);
}
}
}
void DeclarativeSyntaxPageDesktop() {
CLAY({ .id = CLAY_ID("SyntaxPageDesktop"), .layout = { .sizing = { CLAY_SIZING_GROW(0), CLAY_SIZING_FIT(.min = windowHeight - 50) }, .childAlignment = {0, CLAY_ALIGN_Y_CENTER}, .padding = { 50, 50 } } }) {
CLAY({ .id = CLAY_ID("SyntaxPage"), .layout = { .sizing = { CLAY_SIZING_GROW(0), CLAY_SIZING_GROW(0) }, .childAlignment = { 0, CLAY_ALIGN_Y_CENTER }, .padding = CLAY_PADDING_ALL(32), .childGap = 32 }, .border = { .width = { .left = 2, .right = 2 }, .color = COLOR_RED }}) {
CLAY({ .id = CLAY_ID("SyntaxPageLeftText"), .layout = { .sizing = { CLAY_SIZING_PERCENT(0.5) }, .layoutDirection = CLAY_TOP_TO_BOTTOM, .childGap = 8 } }) {
CLAY_TEXT(CLAY_STRING("Declarative Syntax"), CLAY_TEXT_CONFIG({ .fontSize = 52, .fontId = FONT_ID_TITLE_56, .textColor = COLOR_RED }));
CLAY({ .id = CLAY_ID("SyntaxSpacer"), .layout = { .sizing = { CLAY_SIZING_GROW(.max = 16) } } }) {}
CLAY_TEXT(CLAY_STRING("Flexible and readable declarative syntax with nested UI element hierarchies."), CLAY_TEXT_CONFIG({ .fontSize = 28, .fontId = FONT_ID_BODY_36, .textColor = COLOR_RED }));
CLAY_TEXT(CLAY_STRING("Mix elements with standard C code like loops, conditionals and functions."), CLAY_TEXT_CONFIG({ .fontSize = 28, .fontId = FONT_ID_BODY_36, .textColor = COLOR_RED }));
CLAY_TEXT(CLAY_STRING("Create your own library of re-usable components from UI primitives like text, images and rectangles."), CLAY_TEXT_CONFIG({ .fontSize = 28, .fontId = FONT_ID_BODY_36, .textColor = COLOR_RED }));
}
CLAY({ .id = CLAY_ID("SyntaxPageRightImage"), .layout = { .sizing = { CLAY_SIZING_PERCENT(0.50) }, .childAlignment = {.x = CLAY_ALIGN_X_CENTER} } }) {
CLAY({ .id = CLAY_ID("SyntaxPageRightImageInner"), .layout = { .sizing = { CLAY_SIZING_GROW(.max = 568) } }, .image = { .sourceDimensions = {1136, 1194}, .imageData = FrameAllocateString(CLAY_STRING("/clay/images/declarative.png")) } }) {}
}
}
}
}
void DeclarativeSyntaxPageMobile() {
CLAY({ .id = CLAY_ID("SyntaxPageDesktop"), .layout = { .layoutDirection = CLAY_TOP_TO_BOTTOM, .sizing = { CLAY_SIZING_GROW(0), CLAY_SIZING_FIT(.min = windowHeight - 50) }, .childAlignment = {CLAY_ALIGN_X_CENTER, CLAY_ALIGN_Y_CENTER}, .padding = {16, 16, 32, 32}, .childGap = 16 } }) {
CLAY({ .id = CLAY_ID("SyntaxPageLeftText"), .layout = { .sizing = { CLAY_SIZING_GROW(0) }, .layoutDirection = CLAY_TOP_TO_BOTTOM, .childGap = 8 } }) {
CLAY_TEXT(CLAY_STRING("Declarative Syntax"), CLAY_TEXT_CONFIG({ .fontSize = 48, .fontId = FONT_ID_TITLE_56, .textColor = COLOR_RED }));
CLAY({ .id = CLAY_ID("SyntaxSpacer"), .layout = { .sizing = { CLAY_SIZING_GROW(.max = 16) } } }) {}
CLAY_TEXT(CLAY_STRING("Flexible and readable declarative syntax with nested UI element hierarchies."), CLAY_TEXT_CONFIG({ .fontSize = 28, .fontId = FONT_ID_BODY_36, .textColor = COLOR_RED }));
CLAY_TEXT(CLAY_STRING("Mix elements with standard C code like loops, conditionals and functions."), CLAY_TEXT_CONFIG({ .fontSize = 28, .fontId = FONT_ID_BODY_36, .textColor = COLOR_RED }));
CLAY_TEXT(CLAY_STRING("Create your own library of re-usable components from UI primitives like text, images and rectangles."), CLAY_TEXT_CONFIG({ .fontSize = 28, .fontId = FONT_ID_BODY_36, .textColor = COLOR_RED }));
}
CLAY({ .id = CLAY_ID("SyntaxPageRightImage"), .layout = { .sizing = { CLAY_SIZING_GROW(0) }, .childAlignment = {.x = CLAY_ALIGN_X_CENTER} } }) {
CLAY({ .id = CLAY_ID("SyntaxPageRightImageInner"), .layout = { .sizing = { CLAY_SIZING_GROW(.max = 568) } }, .image = { .sourceDimensions = {1136, 1194}, .imageData = FrameAllocateString(CLAY_STRING("/clay/images/declarative.png")) } }) {}
}
}
}
Clay_Color ColorLerp(Clay_Color a, Clay_Color b, float amount) {
return (Clay_Color) {
.r = a.r + (b.r - a.r) * amount,
.g = a.g + (b.g - a.g) * amount,
.b = a.b + (b.b - a.b) * amount,
.a = a.a + (b.a - a.a) * amount,
};
}
Clay_String LOREM_IPSUM_TEXT = CLAY_STRING("Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.");
void HighPerformancePageDesktop(float lerpValue) {
CLAY({ .id = CLAY_ID("PerformanceOuter"), .layout = { .sizing = { CLAY_SIZING_GROW(0), CLAY_SIZING_FIT(.min = windowHeight - 50) }, .childAlignment = {0, CLAY_ALIGN_Y_CENTER}, .padding = {82, 82, 32, 32}, .childGap = 64 }, .backgroundColor = COLOR_RED }) {
CLAY({ .id = CLAY_ID("PerformanceLeftText"), .layout = { .sizing = { CLAY_SIZING_PERCENT(0.5) }, .layoutDirection = CLAY_TOP_TO_BOTTOM, .childGap = 8 } }) {
CLAY_TEXT(CLAY_STRING("High Performance"), CLAY_TEXT_CONFIG({ .fontSize = 52, .fontId = FONT_ID_TITLE_56, .textColor = COLOR_LIGHT }));
CLAY({ .id = CLAY_ID("PerformanceSpacer"), .layout = { .sizing = { CLAY_SIZING_GROW(.max = 16) }} }) {}
CLAY_TEXT(CLAY_STRING("Fast enough to recompute your entire UI every frame."), CLAY_TEXT_CONFIG({ .fontSize = 28, .fontId = FONT_ID_BODY_36, .textColor = COLOR_LIGHT }));
CLAY_TEXT(CLAY_STRING("Small memory footprint (3.5mb default) with static allocation & reuse. No malloc / free."), CLAY_TEXT_CONFIG({ .fontSize = 28, .fontId = FONT_ID_BODY_36, .textColor = COLOR_LIGHT }));
CLAY_TEXT(CLAY_STRING("Simplify animations and reactive UI design by avoiding the standard performance hacks."), CLAY_TEXT_CONFIG({ .fontSize = 28, .fontId = FONT_ID_BODY_36, .textColor = COLOR_LIGHT }));
}
CLAY({ .id = CLAY_ID("PerformanceRightImageOuter"), .layout = { .sizing = { CLAY_SIZING_PERCENT(0.50) }, .childAlignment = {CLAY_ALIGN_X_CENTER} } }) {
CLAY({ .layout = { .sizing = { CLAY_SIZING_GROW(0), CLAY_SIZING_FIXED(400) } }, .border = { .width = {2, 2, 2, 2}, .color = COLOR_LIGHT } }) {
CLAY({ .id = CLAY_ID("AnimationDemoContainerLeft"), .layout = { .sizing = { CLAY_SIZING_PERCENT(0.3f + 0.4f * lerpValue), CLAY_SIZING_GROW(0) }, .childAlignment = {.y = CLAY_ALIGN_Y_CENTER}, .padding = CLAY_PADDING_ALL(32) }, .backgroundColor = ColorLerp(COLOR_RED, COLOR_ORANGE, lerpValue) }) {
CLAY_TEXT(LOREM_IPSUM_TEXT, CLAY_TEXT_CONFIG({ .fontSize = 24, .fontId = FONT_ID_TITLE_56, .textColor = COLOR_LIGHT }));
}
CLAY({ .id = CLAY_ID("AnimationDemoContainerRight"), .layout = { .sizing = { CLAY_SIZING_GROW(0), CLAY_SIZING_GROW(0) }, .childAlignment = {.y = CLAY_ALIGN_Y_CENTER}, .padding = CLAY_PADDING_ALL(32) }, .backgroundColor = ColorLerp(COLOR_ORANGE, COLOR_RED, lerpValue) }) {
CLAY_TEXT(LOREM_IPSUM_TEXT, CLAY_TEXT_CONFIG({ .fontSize = 24, .fontId = FONT_ID_TITLE_56, .textColor = COLOR_LIGHT }));
}
}
}
}
}
void HighPerformancePageMobile(float lerpValue) {
CLAY({ .id = CLAY_ID("PerformanceOuter"), .layout = { .layoutDirection = CLAY_TOP_TO_BOTTOM, .sizing = { CLAY_SIZING_GROW(0), CLAY_SIZING_FIT(.min = windowHeight - 50) }, .childAlignment = {CLAY_ALIGN_X_CENTER, CLAY_ALIGN_Y_CENTER}, .padding = {16, 16, 32, 32}, .childGap = 32 }, .backgroundColor = COLOR_RED }) {
CLAY({ .id = CLAY_ID("PerformanceLeftText"), .layout = { .sizing = { CLAY_SIZING_GROW(0) }, .layoutDirection = CLAY_TOP_TO_BOTTOM, .childGap = 8 } }) {
CLAY_TEXT(CLAY_STRING("High Performance"), CLAY_TEXT_CONFIG({ .fontSize = 48, .fontId = FONT_ID_TITLE_56, .textColor = COLOR_LIGHT }));
CLAY({ .id = CLAY_ID("PerformanceSpacer"), .layout = { .sizing = { CLAY_SIZING_GROW(.max = 16) }} }) {}
CLAY_TEXT(CLAY_STRING("Fast enough to recompute your entire UI every frame."), CLAY_TEXT_CONFIG({ .fontSize = 28, .fontId = FONT_ID_BODY_36, .textColor = COLOR_LIGHT }));
CLAY_TEXT(CLAY_STRING("Small memory footprint (3.5mb default) with static allocation & reuse. No malloc / free."), CLAY_TEXT_CONFIG({ .fontSize = 28, .fontId = FONT_ID_BODY_36, .textColor = COLOR_LIGHT }));
CLAY_TEXT(CLAY_STRING("Simplify animations and reactive UI design by avoiding the standard performance hacks."), CLAY_TEXT_CONFIG({ .fontSize = 28, .fontId = FONT_ID_BODY_36, .textColor = COLOR_LIGHT }));
}
CLAY({ .id = CLAY_ID("PerformanceRightImageOuter"), .layout = { .sizing = { CLAY_SIZING_GROW(0) }, .childAlignment = {CLAY_ALIGN_X_CENTER} } }) {
CLAY({ .id = CLAY_ID(""), .layout = { .sizing = { CLAY_SIZING_GROW(0), CLAY_SIZING_FIXED(400) } }, .border = { .width = { 2, 2, 2, 2 }, .color = COLOR_LIGHT }}) {
CLAY({ .id = CLAY_ID("AnimationDemoContainerLeft"), .layout = { .sizing = { CLAY_SIZING_PERCENT(0.35f + 0.3f * lerpValue), CLAY_SIZING_GROW(0) }, .childAlignment = {.y = CLAY_ALIGN_Y_CENTER}, .padding = CLAY_PADDING_ALL(16) }, .backgroundColor = ColorLerp(COLOR_RED, COLOR_ORANGE, lerpValue) }) {
CLAY_TEXT(LOREM_IPSUM_TEXT, CLAY_TEXT_CONFIG({ .fontSize = 24, .fontId = FONT_ID_TITLE_56, .textColor = COLOR_LIGHT }));
}
CLAY({ .id = CLAY_ID("AnimationDemoContainerRight"), .layout = { .sizing = { CLAY_SIZING_GROW(0), CLAY_SIZING_GROW(0) }, .childAlignment = {.y = CLAY_ALIGN_Y_CENTER}, .padding = CLAY_PADDING_ALL(16) }, .backgroundColor = ColorLerp(COLOR_ORANGE, COLOR_RED, lerpValue) }) {
CLAY_TEXT(LOREM_IPSUM_TEXT, CLAY_TEXT_CONFIG({ .fontSize = 24, .fontId = FONT_ID_TITLE_56, .textColor = COLOR_LIGHT }));
}
}
}
}
}
void HandleRendererButtonInteraction(Clay_ElementId elementId, Clay_PointerData pointerInfo, intptr_t userData) {
if (pointerInfo.state == CLAY_POINTER_DATA_PRESSED_THIS_FRAME) {
ACTIVE_RENDERER_INDEX = (uint32_t)userData;
Clay_SetCullingEnabled(ACTIVE_RENDERER_INDEX == 1);
Clay_SetExternalScrollHandlingEnabled(ACTIVE_RENDERER_INDEX == 0);
}
}
void RendererButtonActive(Clay_String text) {
CLAY({
.layout = { .sizing = {CLAY_SIZING_FIXED(300) }, .padding = CLAY_PADDING_ALL(16) },
.backgroundColor = Clay_Hovered() ? COLOR_RED_HOVER : COLOR_RED,
.cornerRadius = CLAY_CORNER_RADIUS(10),
.userData = FrameAllocateCustomData((CustomHTMLData) { .disablePointerEvents = true, .cursorPointer = true })
}) {
CLAY_TEXT(text, CLAY_TEXT_CONFIG({ .fontSize = 28, .fontId = FONT_ID_BODY_36, .textColor = COLOR_LIGHT }));
}
}
void RendererButtonInactive(Clay_String text, size_t rendererIndex) {
CLAY({
.layout = { .sizing = {CLAY_SIZING_FIXED(300)}, .padding = CLAY_PADDING_ALL(16) },
.border = { .width = {2, 2, 2, 2}, .color = COLOR_RED },
.backgroundColor = Clay_Hovered() ? COLOR_LIGHT_HOVER : COLOR_LIGHT,
.cornerRadius = CLAY_CORNER_RADIUS(10),
.userData = FrameAllocateCustomData((CustomHTMLData) { .disablePointerEvents = true, .cursorPointer = true })
}) {
Clay_OnHover(HandleRendererButtonInteraction, rendererIndex);
CLAY_TEXT(text, CLAY_TEXT_CONFIG({ .fontSize = 28, .fontId = FONT_ID_BODY_36, .textColor = COLOR_RED }));
}
}
void RendererPageDesktop() {
CLAY({ .id = CLAY_ID("RendererPageDesktop"), .layout = { .sizing = { CLAY_SIZING_GROW(0), CLAY_SIZING_FIT(.min = windowHeight - 50) }, .childAlignment = {0, CLAY_ALIGN_Y_CENTER}, .padding = { 50, 50 } } }) {
CLAY({ .id = CLAY_ID("RendererPage"), .layout = { .sizing = { CLAY_SIZING_GROW(0), CLAY_SIZING_GROW(0) }, .childAlignment = { 0, CLAY_ALIGN_Y_CENTER }, .padding = CLAY_PADDING_ALL(32), .childGap = 32 }, .border = { .width = { .left = 2, .right = 2 }, .color = COLOR_RED } }) {
CLAY({ .id = CLAY_ID("RendererLeftText"), .layout = { .sizing = { CLAY_SIZING_PERCENT(0.5) }, .layoutDirection = CLAY_TOP_TO_BOTTOM, .childGap = 8 } }) {
CLAY_TEXT(CLAY_STRING("Renderer & Platform Agnostic"), CLAY_TEXT_CONFIG({ .fontSize = 52, .fontId = FONT_ID_TITLE_56, .textColor = COLOR_RED }));
CLAY({ .id = CLAY_ID("RendererSpacerLeft"), .layout = { .sizing = { CLAY_SIZING_GROW(.max = 16) }} }) {}
CLAY_TEXT(CLAY_STRING("Clay outputs a sorted array of primitive render commands, such as RECTANGLE, TEXT or IMAGE."), CLAY_TEXT_CONFIG({ .fontSize = 28, .fontId = FONT_ID_BODY_36, .textColor = COLOR_RED }));
CLAY_TEXT(CLAY_STRING("Write your own renderer in a few hundred lines of code, or use the provided examples for Raylib, WebGL canvas and more."), CLAY_TEXT_CONFIG({ .fontSize = 28, .fontId = FONT_ID_BODY_36, .textColor = COLOR_RED }));
CLAY_TEXT(CLAY_STRING("There's even an HTML renderer - you're looking at it right now!"), CLAY_TEXT_CONFIG({ .fontSize = 28, .fontId = FONT_ID_BODY_36, .textColor = COLOR_RED }));
}
CLAY({ .id = CLAY_ID("RendererRightText"), .layout = { .sizing = { CLAY_SIZING_PERCENT(0.5) }, .childAlignment = {CLAY_ALIGN_X_CENTER}, .layoutDirection = CLAY_TOP_TO_BOTTOM, .childGap = 16 } }) {
CLAY_TEXT(CLAY_STRING("Try changing renderer!"), CLAY_TEXT_CONFIG({ .fontSize = 36, .fontId = FONT_ID_BODY_36, .textColor = COLOR_ORANGE }));
CLAY({ .id = CLAY_ID("RendererSpacerRight"), .layout = { .sizing = { CLAY_SIZING_GROW(.max = 32) } } }) {}
if (ACTIVE_RENDERER_INDEX == 0) {
RendererButtonActive(CLAY_STRING("HTML Renderer"));
RendererButtonInactive(CLAY_STRING("Canvas Renderer"), 1);
} else {
RendererButtonInactive(CLAY_STRING("HTML Renderer"), 0);
RendererButtonActive(CLAY_STRING("Canvas Renderer"));
}
}
}
}
}
void RendererPageMobile() {
CLAY({ .id = CLAY_ID("RendererMobile"), .layout = { .layoutDirection = CLAY_TOP_TO_BOTTOM, .sizing = { CLAY_SIZING_GROW(0), CLAY_SIZING_FIT(.min = windowHeight - 50) }, .childAlignment = {.x = CLAY_ALIGN_X_CENTER, .y = CLAY_ALIGN_Y_CENTER}, .padding = { 16, 16, 32, 32}, .childGap = 32 }, .backgroundColor = COLOR_LIGHT }) {
CLAY({ .id = CLAY_ID("RendererLeftText"), .layout = { .sizing = { CLAY_SIZING_GROW(0) }, .layoutDirection = CLAY_TOP_TO_BOTTOM, .childGap = 8 } }) {
CLAY_TEXT(CLAY_STRING("Renderer & Platform Agnostic"), CLAY_TEXT_CONFIG({ .fontSize = 48, .fontId = FONT_ID_TITLE_56, .textColor = COLOR_RED }));
CLAY({ .id = CLAY_ID("RendererSpacerLeft"), .layout = { .sizing = { CLAY_SIZING_GROW(.max = 16) }} }) {}
CLAY_TEXT(CLAY_STRING("Clay outputs a sorted array of primitive render commands, such as RECTANGLE, TEXT or IMAGE."), CLAY_TEXT_CONFIG({ .fontSize = 28, .fontId = FONT_ID_BODY_36, .textColor = COLOR_RED }));
CLAY_TEXT(CLAY_STRING("Write your own renderer in a few hundred lines of code, or use the provided examples for Raylib, WebGL canvas and more."), CLAY_TEXT_CONFIG({ .fontSize = 28, .fontId = FONT_ID_BODY_36, .textColor = COLOR_RED }));
CLAY_TEXT(CLAY_STRING("There's even an HTML renderer - you're looking at it right now!"), CLAY_TEXT_CONFIG({ .fontSize = 28, .fontId = FONT_ID_BODY_36, .textColor = COLOR_RED }));
}
CLAY({ .id = CLAY_ID("RendererRightText"), .layout = { .sizing = { CLAY_SIZING_GROW(0) }, .layoutDirection = CLAY_TOP_TO_BOTTOM, .childGap = 16 } }) {
CLAY_TEXT(CLAY_STRING("Try changing renderer!"), CLAY_TEXT_CONFIG({ .fontSize = 36, .fontId = FONT_ID_BODY_36, .textColor = COLOR_ORANGE }));
CLAY({ .id = CLAY_ID("RendererSpacerRight"), .layout = { .sizing = { CLAY_SIZING_GROW(.max = 32) }} }) {}
if (ACTIVE_RENDERER_INDEX == 0) {
RendererButtonActive(CLAY_STRING("HTML Renderer"));
RendererButtonInactive(CLAY_STRING("Canvas Renderer"), 1);
} else {
RendererButtonInactive(CLAY_STRING("HTML Renderer"), 0);
RendererButtonActive(CLAY_STRING("Canvas Renderer"));
}
}
}
}
void DebuggerPageDesktop() {
CLAY({ .id = CLAY_ID("DebuggerDesktop"), .layout = { .sizing = { CLAY_SIZING_GROW(0), CLAY_SIZING_FIT(.min = windowHeight - 50) }, .childAlignment = {0, CLAY_ALIGN_Y_CENTER}, .padding = { 82, 82, 32, 32 }, .childGap = 64 }, .backgroundColor = COLOR_RED }) {
CLAY({ .id = CLAY_ID("DebuggerLeftText"), .layout = { .sizing = { CLAY_SIZING_PERCENT(0.5) }, .layoutDirection = CLAY_TOP_TO_BOTTOM, .childGap = 8 } }) {
CLAY_TEXT(CLAY_STRING("Integrated Debug Tools"), CLAY_TEXT_CONFIG({ .fontSize = 52, .fontId = FONT_ID_TITLE_56, .textColor = COLOR_LIGHT }));
CLAY({ .id = CLAY_ID("DebuggerSpacer"), .layout = { .sizing = { CLAY_SIZING_GROW(.max = 16) }} }) {}
CLAY_TEXT(CLAY_STRING("Clay includes built in \"Chrome Inspector\"-style debug tooling."), CLAY_TEXT_CONFIG({ .fontSize = 28, .fontId = FONT_ID_BODY_36, .textColor = COLOR_LIGHT }));
CLAY_TEXT(CLAY_STRING("View your layout hierarchy and config in real time."), CLAY_TEXT_CONFIG({ .fontSize = 28, .fontId = FONT_ID_BODY_36, .textColor = COLOR_LIGHT }));
CLAY({ .id = CLAY_ID("DebuggerPageSpacer"), .layout = { .sizing = { .width = CLAY_SIZING_GROW(0), .height = CLAY_SIZING_FIXED(32) } } }) {}
CLAY_TEXT(CLAY_STRING("Press the \"d\" key to try it out now!"), CLAY_TEXT_CONFIG({ .fontSize = 32, .fontId = FONT_ID_TITLE_36, .textColor = COLOR_ORANGE }));
}
CLAY({ .id = CLAY_ID("DebuggerRightImageOuter"), .layout = { .sizing = { CLAY_SIZING_PERCENT(0.50) }, .childAlignment = {CLAY_ALIGN_X_CENTER} } }) {
CLAY({ .id = CLAY_ID("DebuggerPageRightImageInner"), .layout = { .sizing = { CLAY_SIZING_GROW(.max = 558) } }, .image = { .sourceDimensions = {1620, 1474}, .imageData = FrameAllocateString(CLAY_STRING("/clay/images/debugger.png")) } }) {}
}
}
}
typedef struct
{
Clay_Vector2 clickOrigin;
Clay_Vector2 positionOrigin;
bool mouseDown;
} ScrollbarData;
ScrollbarData scrollbarData = (ScrollbarData) {};
float animationLerpValue = -1.0f;
Clay_RenderCommandArray CreateLayout(bool mobileScreen, float lerpValue) {
Clay_BeginLayout();
CLAY({ .id = CLAY_ID("OuterContainer"), .layout = { .layoutDirection = CLAY_TOP_TO_BOTTOM, .sizing = { CLAY_SIZING_GROW(0), CLAY_SIZING_GROW(0) } }, .backgroundColor = COLOR_LIGHT }) {
CLAY({ .id = CLAY_ID("Header"), .layout = { .sizing = { CLAY_SIZING_GROW(0), CLAY_SIZING_FIXED(50) }, .childAlignment = { 0, CLAY_ALIGN_Y_CENTER }, .childGap = 16, .padding = { 32, 32 } } }) {
CLAY_TEXT(CLAY_STRING("Clay"), &headerTextConfig);
CLAY({ .id = CLAY_ID("Spacer"), .layout = { .sizing = { .width = CLAY_SIZING_GROW(0) } } }) {}
if (!mobileScreen) {
CLAY({ .id = CLAY_ID("LinkExamplesOuter"), .layout = { .padding = {8, 8} }, .userData = FrameAllocateCustomData((CustomHTMLData) { .link = CLAY_STRING("https://github.com/nicbarker/clay/tree/main/examples") }) }) {
CLAY_TEXT(CLAY_STRING("Examples"), CLAY_TEXT_CONFIG({ .fontId = FONT_ID_BODY_24, .fontSize = 24, .textColor = {61, 26, 5, 255} }));
}
CLAY({ .id = CLAY_ID("LinkDocsOuter"), .layout = { .padding = {8, 8} }, .userData = FrameAllocateCustomData((CustomHTMLData) { .link = CLAY_STRING("https://github.com/nicbarker/clay/blob/main/README.md") }) }) {
CLAY_TEXT(CLAY_STRING("Docs"), CLAY_TEXT_CONFIG({ .fontId = FONT_ID_BODY_24, .fontSize = 24, .textColor = {61, 26, 5, 255} }));
}
}
CLAY({
.layout = { .padding = {16, 16, 6, 6} },
.backgroundColor = Clay_Hovered() ? COLOR_LIGHT_HOVER : COLOR_LIGHT,
.border = { .width = {2, 2, 2, 2}, .color = COLOR_RED },
.cornerRadius = CLAY_CORNER_RADIUS(10),
.userData = FrameAllocateCustomData((CustomHTMLData) { .link = CLAY_STRING("https://github.com/nicbarker/clay/tree/main/examples") }),
}) {
CLAY_TEXT(CLAY_STRING("Discord"), CLAY_TEXT_CONFIG({ .fontId = FONT_ID_BODY_24, .fontSize = 24, .textColor = {61, 26, 5, 255} }));
}
CLAY({
.layout = { .padding = {16, 16, 6, 6} },
.backgroundColor = Clay_Hovered() ? COLOR_LIGHT_HOVER : COLOR_LIGHT,
.border = { .width = {2, 2, 2, 2}, .color = COLOR_RED },
.cornerRadius = CLAY_CORNER_RADIUS(10),
.userData = FrameAllocateCustomData((CustomHTMLData) { .link = CLAY_STRING("https://github.com/nicbarker/clay") }),
}) {
CLAY_TEXT(CLAY_STRING("Github"), CLAY_TEXT_CONFIG({ .fontId = FONT_ID_BODY_24, .fontSize = 24, .textColor = {61, 26, 5, 255} }));
}
}
Clay_LayoutConfig topBorderConfig = (Clay_LayoutConfig) { .sizing = { CLAY_SIZING_GROW(0), CLAY_SIZING_FIXED(4) }};
CLAY({ .id = CLAY_ID("TopBorder1"), .layout = topBorderConfig, .backgroundColor = COLOR_TOP_BORDER_5 }) {}
CLAY({ .id = CLAY_ID("TopBorder2"), .layout = topBorderConfig, .backgroundColor = COLOR_TOP_BORDER_4 }) {}
CLAY({ .id = CLAY_ID("TopBorder3"), .layout = topBorderConfig, .backgroundColor = COLOR_TOP_BORDER_3 }) {}
CLAY({ .id = CLAY_ID("TopBorder4"), .layout = topBorderConfig, .backgroundColor = COLOR_TOP_BORDER_2 }) {}
CLAY({ .id = CLAY_ID("TopBorder5"), .layout = topBorderConfig, .backgroundColor = COLOR_TOP_BORDER_1 }) {}
CLAY({ .id = CLAY_ID("OuterScrollContainer"),
.layout = { .sizing = { CLAY_SIZING_GROW(0), CLAY_SIZING_GROW(0) }, .layoutDirection = CLAY_TOP_TO_BOTTOM },
.scroll = { .vertical = true },
.border = { .width = { .betweenChildren = 2 }, .color = COLOR_RED }
}) {
if (mobileScreen) {
LandingPageMobile();
FeatureBlocksMobile();
DeclarativeSyntaxPageMobile();
HighPerformancePageMobile(lerpValue);
RendererPageMobile();
} else {
LandingPageDesktop();
FeatureBlocksDesktop();
DeclarativeSyntaxPageDesktop();
HighPerformancePageDesktop(lerpValue);
RendererPageDesktop();
DebuggerPageDesktop();
}
}
}
if (!mobileScreen && ACTIVE_RENDERER_INDEX == 1) {
Clay_ScrollContainerData scrollData = Clay_GetScrollContainerData(Clay_GetElementId(CLAY_STRING("OuterScrollContainer")));
Clay_Color scrollbarColor = (Clay_Color){225, 138, 50, 120};
if (scrollbarData.mouseDown) {
scrollbarColor = (Clay_Color){225, 138, 50, 200};
} else if (Clay_PointerOver(Clay_GetElementId(CLAY_STRING("ScrollBar")))) {
scrollbarColor = (Clay_Color){225, 138, 50, 160};
}
float scrollHeight = scrollData.scrollContainerDimensions.height - 12;
CLAY({
.id = CLAY_ID("ScrollBar"),
.floating = { .offset = { .x = -6, .y = -(scrollData.scrollPosition->y / scrollData.contentDimensions.height) * scrollHeight + 6}, .zIndex = 1, .parentId = Clay_GetElementId(CLAY_STRING("OuterScrollContainer")).id, .attachPoints = {.element = CLAY_ATTACH_POINT_RIGHT_TOP, .parent = CLAY_ATTACH_POINT_RIGHT_TOP }, .attachTo = CLAY_ATTACH_TO_PARENT },
.layout = { .sizing = {CLAY_SIZING_FIXED(10), CLAY_SIZING_FIXED((scrollHeight / scrollData.contentDimensions.height) * scrollHeight)} },
.backgroundColor = scrollbarColor,
.cornerRadius = CLAY_CORNER_RADIUS(5)
}) {}
}
return Clay_EndLayout();
}
bool debugModeEnabled = false;
CLAY_WASM_EXPORT("SetScratchMemory") void SetScratchMemory(void * memory) {
frameArena.memory = memory;
}
CLAY_WASM_EXPORT("UpdateDrawFrame") Clay_RenderCommandArray UpdateDrawFrame(float width, float height, float mouseWheelX, float mouseWheelY, float mousePositionX, float mousePositionY, bool isTouchDown, bool isMouseDown, bool arrowKeyDownPressedThisFrame, bool arrowKeyUpPressedThisFrame, bool dKeyPressedThisFrame, float deltaTime) {
frameArena.offset = 0;
windowWidth = width;
windowHeight = height;
Clay_SetLayoutDimensions((Clay_Dimensions) { width, height });
Clay_ScrollContainerData scrollContainerData = Clay_GetScrollContainerData(Clay_GetElementId(CLAY_STRING("OuterScrollContainer")));
Clay_LayoutElementHashMapItem *perfPage = Clay__GetHashMapItem(Clay_GetElementId(CLAY_STRING("PerformanceOuter")).id);
// NaN propagation can cause pain here
float perfPageYOffset = perfPage->boundingBox.y + scrollContainerData.scrollPosition->y;
if (deltaTime == deltaTime && (ACTIVE_RENDERER_INDEX == 1 || (perfPageYOffset < height && perfPageYOffset + perfPage->boundingBox.height > 0))) {
animationLerpValue += deltaTime;
if (animationLerpValue > 1) {
animationLerpValue -= 2;
}
}
if (dKeyPressedThisFrame) {
debugModeEnabled = !debugModeEnabled;
Clay_SetDebugModeEnabled(debugModeEnabled);
}
Clay_SetCullingEnabled(ACTIVE_RENDERER_INDEX == 1);
Clay_SetExternalScrollHandlingEnabled(ACTIVE_RENDERER_INDEX == 0);
Clay__debugViewHighlightColor = (Clay_Color) {105,210,231, 120};
Clay_SetPointerState((Clay_Vector2) {mousePositionX, mousePositionY}, isMouseDown || isTouchDown);
if (!isMouseDown) {
scrollbarData.mouseDown = false;
}
if (isMouseDown && !scrollbarData.mouseDown && Clay_PointerOver(Clay_GetElementId(CLAY_STRING("ScrollBar")))) {
scrollbarData.clickOrigin = (Clay_Vector2) { mousePositionX, mousePositionY };
scrollbarData.positionOrigin = *scrollContainerData.scrollPosition;
scrollbarData.mouseDown = true;
} else if (scrollbarData.mouseDown) {
if (scrollContainerData.contentDimensions.height > 0) {
Clay_Vector2 ratio = (Clay_Vector2) {
scrollContainerData.contentDimensions.width / scrollContainerData.scrollContainerDimensions.width,
scrollContainerData.contentDimensions.height / scrollContainerData.scrollContainerDimensions.height,
};
if (scrollContainerData.config.vertical) {
scrollContainerData.scrollPosition->y = scrollbarData.positionOrigin.y + (scrollbarData.clickOrigin.y - mousePositionY) * ratio.y;
}
if (scrollContainerData.config.horizontal) {
scrollContainerData.scrollPosition->x = scrollbarData.positionOrigin.x + (scrollbarData.clickOrigin.x - mousePositionX) * ratio.x;
}
}
}
if (arrowKeyDownPressedThisFrame) {
if (scrollContainerData.contentDimensions.height > 0) {
scrollContainerData.scrollPosition->y = scrollContainerData.scrollPosition->y - 50;
}
} else if (arrowKeyUpPressedThisFrame) {
if (scrollContainerData.contentDimensions.height > 0) {
scrollContainerData.scrollPosition->y = scrollContainerData.scrollPosition->y + 50;
}
}
Clay_UpdateScrollContainers(isTouchDown, (Clay_Vector2) {mouseWheelX, mouseWheelY}, deltaTime);
bool isMobileScreen = windowWidth < 750;
if (debugModeEnabled) {
isMobileScreen = windowWidth < 950;
}
return CreateLayout(isMobileScreen, animationLerpValue < 0 ? (animationLerpValue + 1) : (1 - animationLerpValue));
//----------------------------------------------------------------------------------
}
// Dummy main() to please cmake - TODO get wasm working with cmake on this example
int main() {
return 0;
}