File size: 4,454 Bytes
0bd62e5 |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 |
<script lang="ts">
import { getContext, onDestroy, onMount, tick } from "svelte";
import { type ToolContext, TOOL_KEY } from "./Tools.svelte";
import { type EditorContext, EDITOR_KEY } from "../ImageEditor.svelte";
import { crop_canvas, resize_and_reposition, type CropCommand } from "./crop";
import Cropper from "./Cropper.svelte";
const { active_tool, register_tool } = getContext<ToolContext>(TOOL_KEY);
const {
dimensions,
editor_box,
pixi,
crop,
command_manager,
current_history
} = getContext<EditorContext>(EDITOR_KEY);
let cropper: CropCommand | null;
export let crop_constraint: [number, number] | `${string}:${string}` | null;
let _crop_constraint: number | null = null;
$: {
if (typeof crop_constraint === "string") {
const [w, h] = crop_constraint.split(":");
_crop_constraint = parseInt(w) / parseInt(h);
} else if (Array.isArray(crop_constraint)) {
_crop_constraint = crop_constraint[0] / crop_constraint[1];
}
}
let w_p = 1;
let h_p = 1;
let l_p = 0;
let t_p = 0;
let current_opacity = 0;
let manually_cropped = false;
$: {
if (!manually_cropped && _crop_constraint && $pixi && $active_tool) {
requestAnimationFrame(() => {
initial_crop();
});
}
}
let c: CropCommand | null = null;
async function initial_crop(): Promise<void> {
if (c || $current_history.previous) return;
const { new_height, new_width, x_offset, y_offset } = resize_and_reposition(
$editor_box.child_width,
$editor_box.child_height,
"c",
_crop_constraint!,
$editor_box.child_width,
$editor_box.child_height
);
w_p = new_width / $editor_box.child_width;
h_p = new_height / $editor_box.child_height;
l_p = x_offset / $editor_box.child_width;
t_p = y_offset / $editor_box.child_height;
c = crop_canvas($pixi!.renderer, $pixi!.mask_container, crop, 0.2);
c.start(...$dimensions, current_crop, false);
c.continue(
[
l_p * $dimensions[0],
t_p * $dimensions[1],
w_p * $dimensions[0],
h_p * $dimensions[1]
],
false
);
c.stop();
c.execute();
c = null;
current_opacity = 0;
}
function handle_crop(
type: "start" | "stop" | "continue",
{
x,
y,
width,
height
}: {
x: number;
y: number;
width: number;
height: number;
}
): void {
if (!$pixi) return;
if (type === "start") {
if (cropper) {
current_opacity = cropper.stop();
cropper = null;
}
cropper = crop_canvas(
$pixi?.renderer,
$pixi.mask_container,
crop,
current_opacity
);
cropper.start(...$dimensions, current_crop);
} else if (type === "continue") {
if (!cropper) return;
cropper.continue([
x * $dimensions[0],
y * $dimensions[1],
width * $dimensions[0],
height * $dimensions[1]
]);
} else if (type === "stop") {
if (!cropper) return;
command_manager.execute(cropper);
}
manually_cropped = true;
}
let measured = false;
function get_measurements(): void {
if (measured) return;
if (!$editor_box.child_height) return;
const _height = $editor_box.child_height;
const _width = $editor_box.child_width;
const _top = $editor_box.child_top - $editor_box.parent_top;
const _left = $editor_box.child_left - $editor_box.parent_left;
w_p = _width / $editor_box.child_width;
h_p = _height / $editor_box.child_height;
l_p =
(_left - $editor_box.child_left + $editor_box.parent_left) /
$editor_box.child_width;
t_p =
(_top - $editor_box.child_top + $editor_box.parent_top) /
$editor_box.child_height;
measured = true;
}
let current_crop: [number, number, number, number];
$: current_crop = [
l_p * $dimensions[0],
t_p * $dimensions[1],
w_p * $dimensions[0],
h_p * $dimensions[1]
];
$: {
l_p = $crop[0];
t_p = $crop[1];
w_p = $crop[2];
h_p = $crop[3];
}
$: $editor_box && get_measurements();
const unregister = register_tool("crop");
onDestroy(unregister);
</script>
{#if $active_tool === "crop" && measured}
<Cropper
crop_constraint={_crop_constraint}
{w_p}
{h_p}
{l_p}
{t_p}
{editor_box}
on:crop_start={({ detail }) => handle_crop("start", detail)}
on:crop_continue={({ detail }) => handle_crop("continue", detail)}
on:crop_end={({ detail }) => handle_crop("stop", detail)}
/>
{/if}
|