fix borderless drag issues and add debug overlay to better test issues about draging area

packages/frontend/scss/_variables.scss

@@ -42,8 +42,7 @@ $z-index: (
   account-hover-info: 200,
 
   // toast for errors and success messages
-  absolute-positioning-helper: 1000,
-  context-menu-layer: 9999
+  absolute-positioning-helper: 1000
 );
 
 // setting z-index to 0 creates a new scope for children without changing the ordering of the parent element

packages/frontend/scss/main_screen/_navbar_wrapper.scss

@@ -1,7 +1,4 @@
 .navbar-wrapper {
-  // so it can be used to drag the window around
-  -webkit-app-region: drag;
-
   position: relative;
 
   .navbar-heading {
@@ -52,8 +49,27 @@
   }
 }
 
+.drag {
+  // so it can be used to drag the window around
+  -webkit-app-region: drag;
+}
+
 .no-drag,
-#hamburger-menu-button,
-#chat-list-search {
+input,
+button {
   -webkit-app-region: no-drag;
 }
+
+#drag-area-visualisation {
+  background-color: transparent;
+  opacity: 0.5;
+  pointer-events: none;
+  position: absolute;
+  top: 0;
+  left: 0;
+  width: 100vw;
+  height: 100vh;
+  margin: 0;
+  padding: 0;
+  border: 0;
+}

packages/frontend/scss/misc/_context_menu.scss

@@ -8,7 +8,6 @@
   max-height: unset;
   max-width: unset;
   // position: absolute;
-  // z-index: map-get($z-index, context-menu-layer);
   background-color: transparent;
   padding: 0;
   margin: 0;
@@ -33,6 +32,7 @@
   pointer-events: auto;
   background-color: var(--bgPrimary);
   color: var(--textPrimary);
+  -webkit-app-region: no-drag;
 
   border-radius: 3px;
   overflow: hidden;

packages/frontend/src/components/Dialog/Dialog.tsx

@@ -89,7 +89,7 @@ const Dialog = React.memo<Props>(
         onClose={onClose}
         onCancel={onCancel}
         ref={dialog}
-        className={classNames(styles.dialog, props.className, {
+        className={classNames(styles.dialog, props.className, 'no-drag', {
           [styles.unstyled]: unstyled,
         })}
         style={style}

packages/frontend/src/components/Dialog/HeaderButton.tsx

@@ -23,7 +23,10 @@ export default function HeaderButton({
   ...props
 }: Props) {
   return (
-    <button className={classNames(styles.headerButton, className)} {...props}>
+    <button
+      className={classNames(styles.headerButton, 'no-drag', className)}
+      {...props}
+    >
       <Icon
         className={styles.headerButtonIcon}
         icon={icon}

packages/frontend/src/components/Dialog/styles.module.scss

@@ -107,7 +107,6 @@ $paddingVertical: 20px;
   justify-content: center;
   padding: 0;
   width: $headerButtonSize;
-  -webkit-app-region: no-drag; // make it clickable, even when it is on top of navbar
 
   & + & {
     margin-left: 5px;

packages/frontend/src/components/ImageBackdrop/index.tsx

@@ -14,7 +14,7 @@ export default function ImageBackdrop({
   variant = 'welcome',
 }: PropsWithChildren<Props>) {
   return (
-    <div className={classNames(styles.imageBackdrop, styles[variant])}>
+    <div className={classNames(styles.imageBackdrop, styles[variant], 'drag')}>
       {children}
     </div>
   )

packages/frontend/src/components/SearchInput/index.tsx

@@ -48,7 +48,7 @@ export default function SearchInput(props: Props) {
         autoFocus
         onChange={onChange}
         value={value}
-        className={classNames(styles.searchInput)}
+        className={classNames(styles.searchInput, 'no-drag')}
         ref={props.inputRef}
         spellCheck={false}
         aria-keyshortcuts='Control+K'

packages/frontend/src/components/SmallScreenModeMacOSTitleBar.tsx

@@ -24,14 +24,13 @@ export function SmallScreenModeMacOSTitleBar() {
         height: '26px',
         lineHeight: '26px',
         textAlign: 'center',
-        //@ts-ignore
-        '-webkit-app-region': 'drag',
         flexShrink: 0,
         flexGrow: 0,
         backgroundColor: '#2c2c2c',
         color: hasFocus ? '#d2d2d2' : '#565656',
         fontWeight: 'bold',
       }}
+      className='drag'
     >
       {appWindowTitle}
     </div>

packages/frontend/src/components/dialogs/AddMember/AddMemberInnerDialog.tsx

@@ -21,6 +21,7 @@ import { VerifiedContactsRequiredDialog } from '../ProtectionStatusDialog'
 import InfiniteLoader from 'react-window-infinite-loader'
 import { AddMemberChip } from './AddMemberDialog'
 import styles from './styles.module.scss'
+import classNames from 'classnames'
 
 export function AddMemberInnerDialog({
   onCancel,
@@ -236,7 +237,7 @@ export function AddMemberInnerDialog({
             })}
             <input
               ref={inputRef}
-              className={'search-input ' + styles.groupMemberSearch}
+              className={classNames('search-input', styles.groupMemberSearch)}
               onChange={onSearchChange}
               onKeyDown={event => {
                 addContactOnKeyDown(event)

packages/frontend/src/components/dialogs/CreateChat/index.tsx

@@ -242,7 +242,7 @@ function CreateChatMain(props: CreateChatMainProps) {
     <>
       <DialogHeader>
         <input
-          className='search-input'
+          className='search-input no-drag'
           onChange={e => setQueryStr(e.target.value)}
           value={queryStr}
           placeholder={

packages/frontend/src/components/dialogs/ForwardMessage/index.tsx

@@ -88,7 +88,7 @@ export default function ForwardMessage(props: Props) {
       <DialogBody className={styles.forwardMessageDialogBody}>
         <div className='forward-message-account-input'>
           <input
-            className='search-input'
+            className='search-input no-drag'
             onChange={onSearchChange}
             value={queryStr}
             placeholder={tx('search')}

packages/frontend/src/components/dialogs/MailtoDialog/index.tsx

@@ -55,7 +55,7 @@ export default function MailtoDialog(props: Props & DialogProps) {
         <div className='mailto-dialog'>
           <div className='select-chat-chat-list'>
             <input
-              className='search-input'
+              className='search-input no-drag'
               onChange={onSearchChange}
               value={queryStr}
               placeholder={tx('search')}

packages/frontend/src/components/dialogs/SelectContact/index.tsx

@@ -57,7 +57,7 @@ export default function SelectContactDialog({
     <Dialog width={400} onClose={onClose} fixed>
       <DialogHeader>
         <input
-          className='search-input'
+          className='search-input no-drag'
           onChange={e => setQueryStr(e.target.value)}
           value={queryStr}
           placeholder={tx('search')}

packages/frontend/src/components/dialogs/WebxdcSendToChat/index.tsx

@@ -93,7 +93,7 @@ export default function WebxdcSaveToChatDialog(props: Props) {
         )}
       >
         <input
-          className='search-input'
+          className='search-input no-drag'
           onChange={onSearchChange}
           value={queryStr}
           placeholder={tx('search')}

packages/frontend/src/components/screens/MainScreen.tsx

@@ -166,7 +166,7 @@ export default function MainScreen({ accountId }: Props) {
         !messageSectionShouldBeHidden ? 'chat-view-open' : ''
       }`}
     >
-      <div className='navbar-wrapper'>
+      <div className='navbar-wrapper drag'>
         <Navbar>
           {!chatListShouldBeHidden && (
             <NavbarGroupLeft>

packages/frontend/src/components/screens/NoAccountSelectedScreen/NoAccountSelectedScreen.tsx

@@ -3,14 +3,17 @@ import React from 'react'
 import useTranslationFunction from '../../../hooks/useTranslationFunction'
 
 import styles from './styles.module.scss'
+import classNames from 'classnames'
 
 export function NoAccountSelectedScreen() {
   const tx = useTranslationFunction()
 
   return (
-    <div className={styles.noAccountSelectedScreen}>
+    <div className={classNames(styles.noAccountSelectedScreen, 'drag')}>
       <div className={styles.background}>
-        <div className={styles.infoBox}>{tx('no_account_selected')}</div>
+        <div className={classNames(styles.infoBox, 'no-drag')}>
+          {tx('no_account_selected')}
+        </div>
       </div>
     </div>
   )

packages/frontend/src/debug-tools.ts

@@ -9,3 +9,96 @@ export function countCall(label: string) {
 export function printCallCounterResult() {
   console.table(countCalls)
 }
+
+/** Visualize drag/no-drag regions for debuging.
+ * This is important because on MacOS there is no window title bar,
+ * so the navbar and other elements need to take that role to make the window dragable.
+ * But whats draggable is not clickable, so buttons need to be excluded.
+ *
+ * See https://github.com/deltachat/deltachat-desktop/issues/4018 to get an idea why this is important to get right.
+ */
+export class DragRegionOverlay {
+  debugDragAreaUpdateInterval: ReturnType<typeof setInterval> | null = null
+  toggle() {
+    let element: HTMLCanvasElement | undefined = document.getElementById(
+      'drag-area-visualisation'
+    ) as HTMLCanvasElement
+    if (!element) {
+      if (!window.visualViewport) {
+        throw new Error(
+          'failed to init DragRegionOverlay: window.visualViewport is undefined, this is unexpected.'
+        )
+      }
+
+      element = document.createElement('canvas')
+      element.height = window.visualViewport.height
+      element.width = window.visualViewport.width
+      element.id = 'drag-area-visualisation'
+      element.popover = 'manual'
+      document.body.append(element)
+    }
+
+    if (this.debugDragAreaUpdateInterval) {
+      element.hidePopover()
+      clearInterval(this.debugDragAreaUpdateInterval)
+      this.debugDragAreaUpdateInterval = null
+    } else {
+      element.showPopover()
+      const drawing = element.getContext('2d')
+      if (!drawing) {
+        throw new Error(
+          'failed to init DragRegionOverlay: canvas context not set'
+        )
+      }
+      drawing.translate(0.5, 0.5)
+      this.debugDragAreaUpdateInterval = setInterval(() => {
+        if (!window.visualViewport) {
+          throw new Error(
+            'failed to init DragRegionOverlay: window.visualViewport is undefined, this is unexpected.'
+          )
+        }
+        element.height = window.visualViewport.height
+        element.width = window.visualViewport.width
+        // hack to make it show on top of dialogs
+        element.hidePopover()
+        element.showPopover()
+
+        const { height, width } = element.getBoundingClientRect()
+        drawing.clearRect(0, 0, width, height)
+
+        function drawElement(rect: DOMRect | undefined, color: string) {
+          if (!rect || !drawing) {
+            return
+          }
+          drawing.fillStyle = color
+          drawing.fillRect(rect.x, rect.y, rect.width, rect.height)
+        }
+
+        function traverseDOMRecursively(element: HTMLElement) {
+          // element.computedStyleMap
+          const styles = window.getComputedStyle(element)
+
+          //@ts-ignore
+          const role = styles.webkitAppRegion
+
+          if (role !== 'none') {
+            const boundingRect = element.getClientRects()[0]
+            if (role === 'no-drag') {
+              drawElement(boundingRect, 'green')
+            } else if (role === 'drag') {
+              drawElement(boundingRect, 'red')
+            }
+          }
+
+          for (const child of element.children) {
+            if (child instanceof HTMLElement) {
+              traverseDOMRecursively(child)
+            }
+          }
+        }
+
+        traverseDOMRecursively(document.documentElement)
+      }, 50)
+    }
+  }
+}

packages/frontend/src/experimental.ts

@@ -1,6 +1,6 @@
 import { getLogger } from '../../shared/logger'
 import { BackendRemote } from './backend-com'
-import { printCallCounterResult } from './debug-tools'
+import { DragRegionOverlay, printCallCounterResult } from './debug-tools'
 import { runtime } from '@deltachat-desktop/runtime-interface'
 import { selectedAccountId } from './ScreenController'
 
@@ -21,6 +21,7 @@ only for debugging:
 - printCallCounterResult() // for profiling you can track what is called how often with 'countCall(label: string)'
 - .rpc // only available in devmode, gives full access to jsonrpc
 - .runtime // only available in devmode, gives full access to runtime
+- showDragAreas() // toggle drag region overlay
     `)
   }
   constructor() {
@@ -77,6 +78,14 @@ only for debugging:
     }
     return runtime
   }
+
+  dragRegionOverlay?: DragRegionOverlay
+  showDragAreas() {
+    if (!this.dragRegionOverlay) {
+      this.dragRegionOverlay = new DragRegionOverlay()
+    }
+    this.dragRegionOverlay.toggle()
+  }
 }
 
 export const exp = new Experimental()