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<script lang="ts">
import { createEventDispatcher, tick } from "svelte";
import { BlockLabel } from "@gradio/atoms";
import { Image as ImageIcon } from "@gradio/icons";
import type { SelectData, I18nFormatter } from "@gradio/utils";
import { get_coordinates_of_clicked_image } from "./utils";
import Webcam from "./Webcam.svelte";
import { Upload } from "@gradio/upload";
import { type FileData, normalise_file } from "@gradio/client";
import ClearImage from "./ClearImage.svelte";
import { SelectSource } from "@gradio/atoms";
import Image from "./Image.svelte";
export let value: null | FileData;
export let label: string | undefined = undefined;
export let show_label: boolean;
type source_type = "upload" | "webcam" | "clipboard" | "microphone" | null;
export let sources: source_type[] = ["upload", "clipboard", "webcam"];
export let streaming = false;
export let pending = false;
export let mirror_webcam: boolean;
export let selectable = false;
export let root: string;
export let i18n: I18nFormatter;
let upload: Upload;
let uploading = false;
export let active_source: source_type = null;
function handle_upload({ detail }: CustomEvent<FileData>): void {
value = normalise_file(detail, root, null);
dispatch("upload");
}
function handle_clear(): void {
value = null;
dispatch("clear");
dispatch("change", null);
}
async function handle_save(img_blob: Blob | any): Promise<void> {
pending = true;
const f = await upload.load_files([new File([img_blob], `webcam.png`)]);
value = f?.[0] || null;
await tick();
dispatch(streaming ? "stream" : "change");
pending = false;
}
$: active_streaming = streaming && active_source === "webcam";
$: if (uploading && !active_streaming) value = null;
$: value && !value.url && (value = normalise_file(value, root, null));
const dispatch = createEventDispatcher<{
change?: never;
stream?: never;
clear?: never;
drag: boolean;
upload?: never;
select: SelectData;
}>();
let dragging = false;
$: dispatch("drag", dragging);
function handle_click(evt: MouseEvent): void {
let coordinates = get_coordinates_of_clicked_image(evt);
if (coordinates) {
dispatch("select", { index: coordinates, value: null });
}
}
$: if (!active_source && sources) {
active_source = sources[0];
}
async function handle_select_source(
source: (typeof sources)[number]
): Promise<void> {
switch (source) {
case "clipboard":
upload.paste_clipboard();
break;
default:
break;
}
}
</script>
<BlockLabel {show_label} Icon={ImageIcon} label={label || "Image"} />
<div data-testid="image" class="image-container">
{#if value?.url && !active_streaming}
<ClearImage
on:remove_image={() => {
value = null;
dispatch("clear");
}}
/>
{/if}
<div class="upload-container">
<Upload
hidden={value !== null || active_source === "webcam"}
bind:this={upload}
bind:uploading
bind:dragging
filetype={active_source === "clipboard" ? "clipboard" : "image/*"}
on:load={handle_upload}
on:error
{root}
disable_click={!sources.includes("upload")}
>
{#if value === null}
<slot />
{/if}
</Upload>
{#if active_source === "webcam" && (streaming || (!streaming && !value))}
<Webcam
{root}
on:capture={(e) => handle_save(e.detail)}
on:stream={(e) => handle_save(e.detail)}
on:error
on:drag
on:upload={(e) => handle_save(e.detail)}
{mirror_webcam}
{streaming}
mode="image"
include_audio={false}
{i18n}
/>
{:else if value !== null && !streaming}
<!-- svelte-ignore a11y-click-events-have-key-events-->
<!-- svelte-ignore a11y-no-static-element-interactions-->
<div class:selectable class="image-frame" on:click={handle_click}>
<Image src={value.url} alt={value.alt_text} />
</div>
{/if}
</div>
{#if sources.length > 1 || sources.includes("clipboard")}
<SelectSource
{sources}
bind:active_source
{handle_clear}
handle_select={handle_select_source}
/>
{/if}
</div>
<style>
.image-frame :global(img) {
width: var(--size-full);
height: var(--size-full);
object-fit: cover;
}
.image-frame {
object-fit: cover;
width: 100%;
height: 100%;
}
.upload-container {
height: 100%;
flex-shrink: 1;
max-height: 100%;
}
.image-container {
display: flex;
height: 100%;
flex-direction: column;
justify-content: center;
align-items: center;
max-height: 100%;
}
.selectable {
cursor: crosshair;
}
</style>
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