Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 | 1x 1x 1x 1x 1x 106x 106x 106x 106x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 14x 14x 14x 14x 14x 14x 14x 14x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x 106x 106x 106x 106x 106x 106x 106x 106x 106x 6x 6x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x | /** @import { BlurParams, CrossfadeParams, DrawParams, FadeParams, FlyParams, ScaleParams, SlideParams, TransitionConfig } from './public' */
/** @param {number} x */
const linear = (x) => x;
/** @param {number} t */
function cubic_out(t) {
const f = t - 1.0;
return f * f * f + 1.0;
}
/**
* @param {number} t
* @returns {number}
*/
function cubic_in_out(t) {
return t < 0.5 ? 4.0 * t * t * t : 0.5 * Math.pow(2.0 * t - 2.0, 3.0) + 1.0;
}
/** @param {number | string} value
* @returns {[number, string]}
*/
function split_css_unit(value) {
const split = typeof value === 'string' && value.match(/^\s*(-?[\d.]+)([^\s]*)\s*$/);
return split ? [parseFloat(split[1]), split[2] || 'px'] : [/** @type {number} */ (value), 'px'];
}
/**
* Animates a `blur` filter alongside an element's opacity.
*
* @param {Element} node
* @param {BlurParams} [params]
* @returns {TransitionConfig}
*/
export function blur(
node,
{ delay = 0, duration = 400, easing = cubic_in_out, amount = 5, opacity = 0 } = {}
) {
const style = getComputedStyle(node);
const target_opacity = +style.opacity;
const f = style.filter === 'none' ? '' : style.filter;
const od = target_opacity * (1 - opacity);
const [value, unit] = split_css_unit(amount);
return {
delay,
duration,
easing,
css: (_t, u) => `opacity: ${target_opacity - od * u}; filter: ${f} blur(${u * value}${unit});`
};
}
/**
* Animates the opacity of an element from 0 to the current opacity for `in` transitions and from the current opacity to 0 for `out` transitions.
*
* @param {Element} node
* @param {FadeParams} [params]
* @returns {TransitionConfig}
*/
export function fade(node, { delay = 0, duration = 400, easing = linear } = {}) {
const o = +getComputedStyle(node).opacity;
return {
delay,
duration,
easing,
css: (t) => `opacity: ${t * o}`
};
}
/**
* Animates the x and y positions and the opacity of an element. `in` transitions animate from the provided values, passed as parameters to the element's default values. `out` transitions animate from the element's default values to the provided values.
*
* @param {Element} node
* @param {FlyParams} [params]
* @returns {TransitionConfig}
*/
export function fly(
node,
{ delay = 0, duration = 400, easing = cubic_out, x = 0, y = 0, opacity = 0 } = {}
) {
const style = getComputedStyle(node);
const target_opacity = +style.opacity;
const transform = style.transform === 'none' ? '' : style.transform;
const od = target_opacity * (1 - opacity);
const [x_value, x_unit] = split_css_unit(x);
const [y_value, y_unit] = split_css_unit(y);
return {
delay,
duration,
easing,
css: (t, u) => `
transform: ${transform} translate(${(1 - t) * x_value}${x_unit}, ${(1 - t) * y_value}${y_unit});
opacity: ${target_opacity - od * u}`
};
}
/**
* Slides an element in and out.
*
* @param {Element} node
* @param {SlideParams} [params]
* @returns {TransitionConfig}
*/
export function slide(node, { delay = 0, duration = 400, easing = cubic_out, axis = 'y' } = {}) {
const style = getComputedStyle(node);
const opacity = +style.opacity;
const primary_property = axis === 'y' ? 'height' : 'width';
const primary_property_value = parseFloat(style[primary_property]);
const secondary_properties = axis === 'y' ? ['top', 'bottom'] : ['left', 'right'];
const capitalized_secondary_properties = secondary_properties.map(
(e) => /** @type {'Left' | 'Right' | 'Top' | 'Bottom'} */ (`${e[0].toUpperCase()}${e.slice(1)}`)
);
const padding_start_value = parseFloat(style[`padding${capitalized_secondary_properties[0]}`]);
const padding_end_value = parseFloat(style[`padding${capitalized_secondary_properties[1]}`]);
const margin_start_value = parseFloat(style[`margin${capitalized_secondary_properties[0]}`]);
const margin_end_value = parseFloat(style[`margin${capitalized_secondary_properties[1]}`]);
const border_width_start_value = parseFloat(
style[`border${capitalized_secondary_properties[0]}Width`]
);
const border_width_end_value = parseFloat(
style[`border${capitalized_secondary_properties[1]}Width`]
);
return {
delay,
duration,
easing,
css: (t) =>
'overflow: hidden;' +
`opacity: ${Math.min(t * 20, 1) * opacity};` +
`${primary_property}: ${t * primary_property_value}px;` +
`padding-${secondary_properties[0]}: ${t * padding_start_value}px;` +
`padding-${secondary_properties[1]}: ${t * padding_end_value}px;` +
`margin-${secondary_properties[0]}: ${t * margin_start_value}px;` +
`margin-${secondary_properties[1]}: ${t * margin_end_value}px;` +
`border-${secondary_properties[0]}-width: ${t * border_width_start_value}px;` +
`border-${secondary_properties[1]}-width: ${t * border_width_end_value}px;`
};
}
/**
* Animates the opacity and scale of an element. `in` transitions animate from an element's current (default) values to the provided values, passed as parameters. `out` transitions animate from the provided values to an element's default values.
*
* @param {Element} node
* @param {ScaleParams} [params]
* @returns {TransitionConfig}
*/
export function scale(
node,
{ delay = 0, duration = 400, easing = cubic_out, start = 0, opacity = 0 } = {}
) {
const style = getComputedStyle(node);
const target_opacity = +style.opacity;
const transform = style.transform === 'none' ? '' : style.transform;
const sd = 1 - start;
const od = target_opacity * (1 - opacity);
return {
delay,
duration,
easing,
css: (_t, u) => `
transform: ${transform} scale(${1 - sd * u});
opacity: ${target_opacity - od * u}
`
};
}
/**
* Animates the stroke of an SVG element, like a snake in a tube. `in` transitions begin with the path invisible and draw the path to the screen over time. `out` transitions start in a visible state and gradually erase the path. `draw` only works with elements that have a `getTotalLength` method, like `<path>` and `<polyline>`.
*
* @param {SVGElement & { getTotalLength(): number }} node
* @param {DrawParams} [params]
* @returns {TransitionConfig}
*/
export function draw(node, { delay = 0, speed, duration, easing = cubic_in_out } = {}) {
let len = node.getTotalLength();
const style = getComputedStyle(node);
if (style.strokeLinecap !== 'butt') {
len += parseInt(style.strokeWidth);
}
if (duration === undefined) {
if (speed === undefined) {
duration = 800;
} else {
duration = len / speed;
}
} else if (typeof duration === 'function') {
duration = duration(len);
}
return {
delay,
duration,
easing,
css: (_, u) => `
stroke-dasharray: ${len};
stroke-dashoffset: ${u * len};
`
};
}
/**
* @template T
* @template S
* @param {T} tar
* @param {S} src
* @returns {T & S}
*/
function assign(tar, src) {
// @ts-ignore
for (const k in src) tar[k] = src[k];
return /** @type {T & S} */ (tar);
}
/**
* The `crossfade` function creates a pair of [transitions](https://svelte.dev/docs#template-syntax-element-directives-transition-fn) called `send` and `receive`. When an element is 'sent', it looks for a corresponding element being 'received', and generates a transition that transforms the element to its counterpart's position and fades it out. When an element is 'received', the reverse happens. If there is no counterpart, the `fallback` transition is used.
*
* @param {CrossfadeParams & {
* fallback?: (node: Element, params: CrossfadeParams, intro: boolean) => TransitionConfig;
* }} params
* @returns {[(node: any, params: CrossfadeParams & { key: any; }) => () => TransitionConfig, (node: any, params: CrossfadeParams & { key: any; }) => () => TransitionConfig]}
*/
export function crossfade({ fallback, ...defaults }) {
/** @type {Map<any, Element>} */
const to_receive = new Map();
/** @type {Map<any, Element>} */
const to_send = new Map();
/**
* @param {Element} from_node
* @param {Element} node
* @param {CrossfadeParams} params
* @returns {TransitionConfig}
*/
function crossfade(from_node, node, params) {
const {
delay = 0,
duration = /** @param {number} d */ (d) => Math.sqrt(d) * 30,
easing = cubic_out
} = assign(assign({}, defaults), params);
const from = from_node.getBoundingClientRect();
const to = node.getBoundingClientRect();
const dx = from.left - to.left;
const dy = from.top - to.top;
const dw = from.width / to.width;
const dh = from.height / to.height;
const d = Math.sqrt(dx * dx + dy * dy);
const style = getComputedStyle(node);
const transform = style.transform === 'none' ? '' : style.transform;
const opacity = +style.opacity;
return {
delay,
duration: typeof duration === 'function' ? duration(d) : duration,
easing,
css: (t, u) => `
opacity: ${t * opacity};
transform-origin: top left;
transform: ${transform} translate(${u * dx}px,${u * dy}px) scale(${t + (1 - t) * dw}, ${
t + (1 - t) * dh
});
`
};
}
/**
* @param {Map<any, Element>} items
* @param {Map<any, Element>} counterparts
* @param {boolean} intro
* @returns {(node: any, params: CrossfadeParams & { key: any; }) => () => TransitionConfig}
*/
function transition(items, counterparts, intro) {
// @ts-expect-error TODO improve typings (are the public types wrong?)
return (node, params) => {
items.set(params.key, node);
return () => {
if (counterparts.has(params.key)) {
const other_node = counterparts.get(params.key);
counterparts.delete(params.key);
return crossfade(/** @type {Element} */ (other_node), node, params);
}
// if the node is disappearing altogether
// (i.e. wasn't claimed by the other list)
// then we need to supply an outro
items.delete(params.key);
return fallback && fallback(node, params, intro);
};
};
}
return [transition(to_send, to_receive, false), transition(to_receive, to_send, true)];
}
|