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<script lang="ts" context="module">
// Should be equal to the width and height of the zoom preview canvas in the CSS
const ZOOM_WINDOW_DIMENSIONS_EXPANDED = 110;
// Should be equal to the width and height of the `.pixel-outline` div in the CSS, and should be evenly divisible into the number above
const UPSCALE_FACTOR = 10;
export const ZOOM_WINDOW_DIMENSIONS = ZOOM_WINDOW_DIMENSIONS_EXPANDED / UPSCALE_FACTOR;
</script>
<script lang="ts">
import { onMount } from "svelte";
import FloatingMenu from "@graphite/components/layout/FloatingMenu.svelte";
const temporaryCanvas = document.createElement("canvas");
temporaryCanvas.width = ZOOM_WINDOW_DIMENSIONS;
temporaryCanvas.height = ZOOM_WINDOW_DIMENSIONS;
let zoomPreviewCanvas: HTMLCanvasElement | undefined;
export let imageData: ImageData | undefined = undefined;
export let colorChoice: string;
export let primaryColor: string;
export let secondaryColor: string;
export let x: number;
export let y: number;
$: displayImageDataPreview(imageData);
function displayImageDataPreview(imageData: ImageData | undefined) {
if (!zoomPreviewCanvas) return;
const context = zoomPreviewCanvas.getContext("2d");
const temporaryContext = temporaryCanvas.getContext("2d");
if (!imageData || !context || !temporaryContext) return;
temporaryContext.putImageData(imageData, 0, 0, 0, 0, ZOOM_WINDOW_DIMENSIONS, ZOOM_WINDOW_DIMENSIONS);
context.fillStyle = "black";
context.fillRect(0, 0, ZOOM_WINDOW_DIMENSIONS, ZOOM_WINDOW_DIMENSIONS);
context.drawImage(temporaryCanvas, 0, 0);
}
onMount(() => {
displayImageDataPreview(imageData);
});
</script>
<FloatingMenu
open={true}
class="eyedropper-preview"
type="Cursor"
styles={{ "--ring-color-primary": primaryColor, "--ring-color-secondary": secondaryColor, "--ring-color-choice": colorChoice, left: x + "px", top: y + "px" }}
>
<div class="ring">
<div class="canvas-container">
<canvas width={ZOOM_WINDOW_DIMENSIONS} height={ZOOM_WINDOW_DIMENSIONS} bind:this={zoomPreviewCanvas} />
<div class="pixel-outline" />
</div>
</div>
</FloatingMenu>
<style lang="scss" global>
.eyedropper-preview {
pointer-events: none;
.ring {
transform: translate(0, -50%) rotate(45deg);
position: relative;
background: var(--ring-color-choice);
padding: 16px;
border: 8px solid;
border-radius: 50%;
border-top-color: var(--ring-color-primary);
border-left-color: var(--ring-color-primary);
border-bottom-color: var(--ring-color-secondary);
border-right-color: var(--ring-color-secondary);
&::after {
content: "";
position: absolute;
width: 100%;
height: 100%;
top: -8px;
left: -8px;
padding: 8px;
border-radius: 50%;
box-shadow:
0 0 0 1px rgba(255, 255, 255, 0.5),
0 0 8px rgba(0, 0, 0, 0.25);
}
.canvas-container {
transform: rotate(-45deg);
canvas {
display: block;
width: 110px;
height: 110px;
border-radius: 50%;
image-rendering: pixelated;
}
&::after {
content: "";
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
border-radius: 50%;
box-shadow:
inset 0 0 0 1px rgba(255, 255, 255, 0.5),
inset 0 0 8px rgba(0, 0, 0, 0.25);
}
.pixel-outline {
position: absolute;
left: 50%;
top: 50%;
transform: translate(-50%, -50%);
--outline-width: 2;
margin-top: calc(-1px * (var(--outline-width) / 2));
width: calc(10px - (var(--outline-width) * 1px));
height: calc(10px - var(--outline-width) * 1px);
border: calc(var(--outline-width) * 1px) solid var(--color-0-black);
}
}
}
}
</style>
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