add keyboard shortcuts

lama_cleaner/app/src/App.tsx

@@ -1,12 +1,14 @@
 import { ArrowLeftIcon } from '@heroicons/react/outline'
 import React, { useState } from 'react'
-import { useWindowSize } from 'react-use'
+import { useToggle, useWindowSize } from 'react-use'
 import Button from './components/Button'
 import FileSelect from './components/FileSelect'
+import ShortcutsModal from './components/ShortcutsModal'
 import Editor from './Editor'
 
 function App() {
   const [file, setFile] = useState<File>()
+  const [showShortcuts, toggleShowShortcuts] = useToggle(false)
   const windowSize = useWindowSize()
 
   return (
@@ -27,6 +29,7 @@ function App() {
 
         {file ? (
           <Button
+            onClick={toggleShowShortcuts}
             icon={
               <svg
                 xmlns="http://www.w3.org/2000/svg"
@@ -57,6 +60,8 @@ function App() {
         )}
       </header>
 
+      {showShortcuts && <ShortcutsModal onClose={toggleShowShortcuts} />}
+
       <main
         className={[
           'h-full flex flex-1 flex-col sm:items-center sm:justify-center overflow-hidden',

lama_cleaner/app/src/components/Button.tsx

@@ -35,11 +35,17 @@ export default function Button(props: ButtonProps) {
   if (!primary && !active) {
     background = 'hover:bg-primary'
   }
+
+  const blurOnClick = (e: React.MouseEvent<HTMLDivElement>) => {
+    e.currentTarget.blur()
+    onClick?.()
+  }
+
   return (
     <div
       role="button"
       onKeyDown={onKeyDown}
-      onClick={onClick}
+      onClick={blurOnClick}
       onPointerDown={(ev: React.PointerEvent<HTMLDivElement>) => {
         setActive(true)
         onDown?.(ev.nativeEvent)

lama_cleaner/app/src/components/Modal.tsx

@@ -1,19 +1,46 @@
-import React, { ReactNode } from 'react'
+import { XIcon } from '@heroicons/react/outline'
+import React, { ReactNode, useRef } from 'react'
+import { useClickAway } from 'react-use'
+import Button from './Button'
 
 interface ModalProps {
   children?: ReactNode
+  onClose?: () => void
+  className?: string
 }
 
 export default function Modal(props: ModalProps) {
-  const { children } = props
+  const { children, onClose, className } = props
+  const ref = useRef(null)
+
+  useClickAway(ref, () => {
+    onClose?.()
+  })
+
   return (
     <div
       className={[
         'absolute w-full h-full flex justify-center items-center',
-        'bg-white bg-opacity-40 backdrop-filter backdrop-blur-md',
+        'z-20',
+        'bg-gray-300 bg-opacity-40 backdrop-filter backdrop-blur-md',
       ].join(' ')}
     >
-      <div className="bg-primary p-16 max-w-4xl">{children}</div>
+      <div
+        ref={ref}
+        className={`bg-white max-w-4xl relative rounded-md shadow-md ${
+          className || 'p-8 sm:p-12'
+        }`}
+      >
+        <Button
+          icon={<XIcon className="w-6 h-6" />}
+          className={[
+            'absolute right-4 top-4 rounded-full bg-gray-100 w-10 h-10',
+            'flex justify-center items-center py-0 px-0 sm:px-0',
+          ].join(' ')}
+          onClick={onClose}
+        />
+        {children}
+      </div>
     </div>
   )
 }

lama_cleaner/app/src/components/ShortcutsModal.tsx

@@ -0,0 +1,47 @@
+import { ArrowLeftIcon } from '@heroicons/react/outline'
+import React, { ReactNode } from 'react'
+import Modal from './Modal'
+
+interface Shortcut {
+  children: ReactNode
+  content: string
+}
+
+function ShortCut(props: Shortcut) {
+  const { children, content } = props
+
+  return (
+    <div className="h-full flex flex-row space-x-6 justify-between">
+      <div className="mr-12 border-2 rounded-xl px-2 py-1">{children}</div>
+      <div className="flex flex-col justify-center">{content}</div>
+    </div>
+  )
+}
+
+interface ShortcutsModalProps {
+  onClose?: () => void
+}
+
+export default function ShortcutsModal(props: ShortcutsModalProps) {
+  const { onClose } = props
+  return (
+    <Modal onClose={onClose} className="h-full sm:h-auto p-0 sm:p-0">
+      <div className="h-full sm:h-auto flex flex-col sm:flex-row">
+        <div className="flex sm:p-14 flex flex-col justify-center space-y-6">
+          <ShortCut content="Enable multi-stroke mask drawing">
+            <p>Hold Cmd/Ctrl</p>
+          </ShortCut>
+          <ShortCut content="Enable panning">
+            <p>Hold Space</p>
+          </ShortCut>
+          <ShortCut content="View original image">
+            <p>Hold Tab</p>
+          </ShortCut>
+          <ShortCut content="Reset zoom/pan & Cancel mask drawing">
+            <p>Esc</p>
+          </ShortCut>
+        </div>
+      </div>
+    </Modal>
+  )
+}