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<script lang="ts">
import { createEventDispatcher } from "svelte";
import { IconButton, IconButtonWrapper } from "@gradio/atoms";
import {
Check,
Trash,
ZoomIn,
ZoomOut,
Pan,
Download,
Undo,
Redo
} from "@gradio/icons";
import type { Writable } from "svelte/store";
export let can_save = false;
export let changeable = false;
export let current_zoom = 1;
export let tool: string;
export let min_zoom = true;
export let enable_download = false;
export let can_undo: boolean;
export let can_redo: boolean;
const dispatch = createEventDispatcher<{
remove_image: void;
undo: void;
redo: void;
save: void;
zoom_in: void;
zoom_out: void;
set_zoom: number | "fit";
pan: void;
download: void;
}>();
let show_zoom_popup = false;
function handle_zoom_click(e: MouseEvent): void {
e.stopPropagation();
show_zoom_popup = !show_zoom_popup;
}
function handle_zoom_change(zoom: number | "fit"): void {
dispatch("set_zoom", zoom);
show_zoom_popup = false;
}
function handle_zoom_keydown(e: KeyboardEvent): void {
if (e.key === "Enter") {
handle_zoom_change(current_zoom);
}
}
$: formatted_zoom = Math.round(current_zoom * 100);
</script>
<IconButtonWrapper>
{#if enable_download}
<IconButton
Icon={Download}
label="Download"
on:click={(event) => {
dispatch("download");
event.stopPropagation();
}}
/>
{/if}
<IconButton
Icon={Pan}
label="Pan"
on:click={(e) => {
e.stopPropagation();
dispatch("pan");
}}
highlight={tool === "pan"}
size="small"
padded={false}
transparent={true}
disabled={min_zoom}
/>
<IconButton
Icon={ZoomOut}
label="Zoom out"
on:click={(event) => {
dispatch("zoom_out");
event.stopPropagation();
}}
/>
<IconButton
Icon={ZoomIn}
label="Zoom in"
on:click={(event) => {
dispatch("zoom_in");
event.stopPropagation();
}}
/>
<div class="zoom-number">
<span
role="button"
tabindex="0"
on:click={handle_zoom_click}
on:keydown={handle_zoom_keydown}>{formatted_zoom}%</span
>
{#if show_zoom_popup}
<div class="zoom-controls">
<ul>
<li>
<button on:click|stopPropagation={() => handle_zoom_change("fit")}>
Fit to screen
</button>
</li>
{#each [0.25, 0.5, 1, 2, 4] as zoom}
<li>
<button on:click|stopPropagation={() => handle_zoom_change(zoom)}>
{zoom * 100}%
</button>
</li>
{/each}
</ul>
</div>
{/if}
</div>
<div class="separator"></div>
<IconButton
Icon={Undo}
label="Undo"
on:click={(event) => {
dispatch("undo");
event.stopPropagation();
}}
disabled={!can_undo}
/>
<IconButton
Icon={Redo}
label="Redo"
on:click={(event) => {
dispatch("redo");
event.stopPropagation();
}}
disabled={!can_redo}
/>
{#if changeable}
<IconButton
disabled={!can_save}
Icon={Check}
label="Save changes"
on:click={(event) => {
dispatch("save");
event.stopPropagation();
}}
color="var(--color-accent)"
/>
{/if}
<IconButton
Icon={Trash}
label="Clear canvas"
on:click={(event) => {
dispatch("remove_image");
event.stopPropagation();
}}
/>
</IconButtonWrapper>
<style>
.separator {
width: 1px;
height: 10px;
background-color: var(--border-color-primary);
}
.zoom-number {
position: relative;
width: 30px;
padding-left: 4px;
display: flex;
align-items: center;
justify-content: center;
}
.zoom-number span {
cursor: pointer;
font-size: var(--text-sm);
transition: color 0.15s ease;
}
.zoom-number span:hover {
color: var(--color-accent);
}
.zoom-controls {
position: absolute;
top: calc(100% + var(--spacing-xxs) + 3px);
left: -2px;
background: var(--block-background-fill);
border: 1px solid var(--color-gray-200);
border-radius: var(--radius-sm);
padding: var(--spacing-xxs);
box-shadow: var(--shadow-drop);
font-size: 12px;
z-index: var(--layer-2);
width: max-content;
color: var(--block-label-text-color);
border: 1px solid var(--block-border-color);
border-top-left-radius: 0;
border-top-right-radius: 0;
}
.zoom-controls ul {
list-style: none;
margin: 0;
padding: 0;
}
.zoom-controls li {
display: flex;
justify-content: space-between;
align-items: center;
transition: background-color 0.15s ease;
border-bottom: 1px solid var(--border-color-primary);
}
.zoom-controls li:last-child {
border-bottom: none;
}
.zoom-controls li:hover {
background-color: var(--background-fill-secondary);
}
.zoom-controls button {
width: 100%;
text-align: left;
padding: var(--spacing-sm) var(--spacing-md);
font-size: var(--text-sm);
line-height: var(--line-sm);
transition: all 0.15s ease;
border-radius: var(--radius-sm);
}
.zoom-controls button:hover {
color: var(--color-accent);
}
</style>
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