Image width/height for gallery component, don't save ImageCache props

This commit is contained in:
space-nuko
2023-05-08 19:48:40 -05:00
parent 92fbe1ea6b
commit 37701f6a54
8 changed files with 1356 additions and 830 deletions

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<script lang="ts">
import { createEventDispatcher } from "svelte";
import type { SelectData } from "@gradio/utils";
import { BlockLabel, Empty, IconButton } from "@gradio/atoms";
import { Download } from "@gradio/icons";
import { get_coordinates_of_clicked_image } from "./utils";
import { Image } from "@gradio/icons";
export let value: null | string;
export let label: string | undefined = undefined;
export let show_label: boolean;
export let selectable: boolean = false;
export let imageWidth: number = 1;
export let imageHeight: number = 1;
let imageElem: HTMLImageElement | null = null;
const dispatch = createEventDispatcher<{
change: string;
select: SelectData;
}>();
$: value && dispatch("change", value);
$: if (value == null || !imageElem) {
imageWidth = 1;
imageHeight = 1;
}
const handle_click = (evt: MouseEvent) => {
let coordinates = get_coordinates_of_clicked_image(evt);
if (coordinates) {
dispatch("select", { index: coordinates, value: null });
}
};
</script>
<BlockLabel {show_label} Icon={Image} label={label || "Image"} />
{#if value === null}
<Empty size="large" unpadded_box={true}><Image /></Empty>
{:else}
<div class="download">
<a
href={value}
target={window.__is_colab__ ? "_blank" : null}
download={"image"}
>
<IconButton Icon={Download} label="Download" />
</a>
</div>
<!-- svelte-ignore a11y-click-events-have-key-events -->
<img src={value} alt="" class:selectable on:click={handle_click} bind:naturalWidth={imageWidth} bind:naturalHeight={imageHeight} />
{/if}
<style>
img {
width: var(--size-full);
height: var(--size-full);
object-fit: contain;
}
.selectable {
cursor: crosshair;
}
.download {
position: absolute;
top: 6px;
right: 6px;
}
</style>

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export { default as StaticImage } from "./StaticImage.svelte"

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export const get_coordinates_of_clicked_image = (
evt: MouseEvent
): [number, number] | null => {
let image = evt.currentTarget as HTMLImageElement;
const imageRect = image.getBoundingClientRect();
const xScale = image.naturalWidth / imageRect.width;
const yScale = image.naturalHeight / imageRect.height;
if (xScale > yScale) {
const displayed_width = imageRect.width;
const displayed_height = image.naturalHeight / xScale;
const y_offset = (imageRect.height - displayed_height) / 2;
var x = Math.round((evt.clientX - imageRect.left) * xScale);
var y = Math.round((evt.clientY - imageRect.top - y_offset) * xScale);
} else {
const displayed_width = image.naturalWidth / yScale;
const displayed_height = imageRect.height;
const x_offset = (imageRect.width - displayed_width) / 2;
var x = Math.round((evt.clientX - imageRect.left - x_offset) * yScale);
var y = Math.round((evt.clientY - imageRect.top) * yScale);
}
if (x < 0 || x >= image.naturalWidth || y < 0 || y >= image.naturalHeight) {
return null;
}
return [x, y];
};