feat: Support hyperlinks 🔥 (#4620)

* feat: Support hypelinks

* dont show edit when link not present

* auto submit on blur

* Add link button in sidebar and do it react way

* add key to hyperlink to remount when element selection changes

* autofocus input

* remove click handler and use pointerup/down to show /hide popup

* add keydown and support enter/escape to submit

* show extrrnal link icon when element has link

* use icons and open link in new tab

* dnt submit unless link updated

* renamed ffiles

* remove unnecessary changes

* update snap

* hide link popup once user starts interacting with element and show again only if clicked outside and clicked on element again

* render link icon outside the element

* fix hit testing

* rewrite implementation to render hyperlinks outside elements and hide when element selected

* remove

* remove

* tweak icon position and size

* rotate link icon when element rotated, handle zooming and render exactly where ne resize handle is rendered

* no need to create a new reference anymore for element when link added/updated

* rotate the link image as well when rotating element

* calculate hitbox of link icon and show pointer when hovering over link icon

* open link when clicked on link icon

* show tooltip when hovering over link icon

* show link action only when single element selected

* support other protocols

* add shortcut cmd/ctrl+k to edit/update link

* don't hide popup after submit

* renderes decreased woo

* Add context mneu label to add/edit link

* fix tests

* remove tick and show trash when in edit mode

* show edit view when element contains link

* fix snap

* horizontally center the hyperlink container with respect to elemnt

* fix padding

* remove checkcircle

* show popup on hover of selected element and dismiss when outside hitbox

* check if element has link before setting popup state

* move logic of auto hide to hyperlink and dnt hide when editing

* hide popover when drag/resize/rotate

* unmount during autohide

* autohide after 500ms

* fix regression

* prevent cmd/ctrl+k when inside link editor

* submit when input not updated

* allow custom urls

* fix centering of popup when zoomed

* fix hitbox during zoom

* fix

* tweak link normalization

* touch hyperlink tooltip DOM only if needed

* consider 0 if no offsetY

* reduce hitbox of link icon and make sure link icon doesn't show on top of higher z-index elements

* show link tooltip only if element has higher z-index

* dnt show hyperlink popup when selection changes from element with link to element with no link and also hide popover when element type changes from selection to something else

* lint: EOL

* fix link icon tooltip positioning

* open the link only when last pointer down and last pointer up hit the link hitbox

* render tooltip after 300ms delay

* ensure link popup and editor input have same height

* wip: cache the link icon canvas

* fix the image quality after caching using device pixel ratio yay

* some cleanup

* remove unused selectedElementIds from renderConfig

* Update src/renderer/renderElement.ts

* fix `opener` vulnerability

* tweak styling

* decrease padding

* open local links in the same tab

* fix caching

* code style refactor

* remove unnecessary save & restore

* show link shortcut in help dialog

* submit on cmd/ctrl+k

* merge state props

* Add title for link

* update editview if prop changes

* tweak link action logic

* make `Hyperlink` compo editor state fully controlled

* dont show popup when context menu open

* show in contextMenu only for single selection & change pos

* set button `selected` state

* set contextMenuOpen on pointerdown

* set contextMenyOpen to false when action triggered

* don't render link icons on export

* fix tests

* fix buttons wrap

* move focus states to input top-level rule

* fix elements sharing `Hyperlink` state

* fix hitbox for link icon in case of rect

* Early return if hitting link icon

Co-authored-by: dwelle <luzar.david@gmail.com>

src/components/Tooltip.tsx

@@ -2,7 +2,7 @@ import "./Tooltip.scss";
 
 import React, { useEffect } from "react";
 
-const getTooltipDiv = () => {
+export const getTooltipDiv = () => {
   const existingDiv = document.querySelector<HTMLDivElement>(
     ".excalidraw-tooltip",
   );
@@ -15,6 +15,50 @@ const getTooltipDiv = () => {
   return div;
 };
 
+export const updateTooltipPosition = (
+  tooltip: HTMLDivElement,
+  item: {
+    left: number;
+    top: number;
+    width: number;
+    height: number;
+  },
+  position: "bottom" | "top" = "bottom",
+) => {
+  const tooltipRect = tooltip.getBoundingClientRect();
+
+  const viewportWidth = window.innerWidth;
+  const viewportHeight = window.innerHeight;
+
+  const margin = 5;
+
+  let left = item.left + item.width / 2 - tooltipRect.width / 2;
+  if (left < 0) {
+    left = margin;
+  } else if (left + tooltipRect.width >= viewportWidth) {
+    left = viewportWidth - tooltipRect.width - margin;
+  }
+
+  let top: number;
+
+  if (position === "bottom") {
+    top = item.top + item.height + margin;
+    if (top + tooltipRect.height >= viewportHeight) {
+      top = item.top - tooltipRect.height - margin;
+    }
+  } else {
+    top = item.top - tooltipRect.height - margin;
+    if (top < 0) {
+      top = item.top + item.height + margin;
+    }
+  }
+
+  Object.assign(tooltip.style, {
+    top: `${top}px`,
+    left: `${left}px`,
+  });
+};
+
 const updateTooltip = (
   item: HTMLDivElement,
   tooltip: HTMLDivElement,
@@ -27,35 +71,8 @@ const updateTooltip = (
 
   tooltip.textContent = label;
 
-  const {
-    x: itemX,
-    bottom: itemBottom,
-    top: itemTop,
-    width: itemWidth,
-  } = item.getBoundingClientRect();
-
-  const { width: labelWidth, height: labelHeight } =
-    tooltip.getBoundingClientRect();
-
-  const viewportWidth = window.innerWidth;
-  const viewportHeight = window.innerHeight;
-
-  const margin = 5;
-
-  const left = itemX + itemWidth / 2 - labelWidth / 2;
-  const offsetLeft =
-    left + labelWidth >= viewportWidth ? left + labelWidth - viewportWidth : 0;
-
-  const top = itemBottom + margin;
-  const offsetTop =
-    top + labelHeight >= viewportHeight
-      ? itemBottom - itemTop + labelHeight + margin * 2
-      : 0;
-
-  Object.assign(tooltip.style, {
-    top: `${top - offsetTop}px`,
-    left: `${left - offsetLeft}px`,
-  });
+  const itemRect = item.getBoundingClientRect();
+  updateTooltipPosition(tooltip, itemRect);
 };
 
 type TooltipProps = {
@@ -75,7 +92,6 @@ export const Tooltip = ({
     return () =>
       getTooltipDiv().classList.remove("excalidraw-tooltip--visible");
   }, []);
-
   return (
     <div
       className="excalidraw-tooltip-wrapper"