add files

.eslintignore

@@ -0,0 +1,3 @@
+/lib
+/node_modules
+/@types

.gitignore

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+node_modules
+dist
+test
+npm-debug.log
+yarn-error.log
+.DS_Store
+coverage
+.cache
+.dev
+
+
+

.npmignore

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+lib-cov
+*.seed
+*.log
+*.csv
+*.dat
+*.out
+*.pid
+*.gz
+
+pids
+logs
+results
+
+
+npm-debug.log
+node_modules/*
+*.DS_Store

.prettierignore

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+node_modules
+coverage
+dist

.prettierrc

@@ -0,0 +1,8 @@
+{
+    "tabWidth": 2,
+    "useTabs": false, 
+    "printWidth": 120, 
+    "semi": false, 
+    "singleQuote": true, 
+    "trailingComma": "es5", 
+}

@types/index.ts

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+import * as React from 'react'
+
+export type UseIonHeaderParallxInput = {
+  image: string
+  expandedColor: string
+  titleColor: string
+  maximumHeight?: number
+}
+
+export type UseIonHeaderParallxInputResult = {
+  ref: React.MutableRefObject<HTMLElement | null>
+}

package.json

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+{
+  "name": "ionic-react-header-parallax",
+  "version": "0.0.0",
+  "description": "A React Hook parallax effect for Ionic React <IonHeader> component",
+  "author": {
+    "name": "Ahmd Nouira",
+    "email": "ahmnouira@gmail.comm"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/ahmnouira/ionic-react-header-parallax.git"
+  },
+  "keywords": [
+    "ionic"
+  ],
+
+  "bugs": {
+    "url": "https://github.com/ahmnouira/ionic-react-header-parallax.git/issues"
+  },
+  "main": "dist/index.js",
+  "types": "@types/index.ts",
+  "scripts": {
+    "prepare": "yarn build",
+    "build": "tsc",
+    "test": "jest",
+    "lint": "eslint src/**/*.ts",
+    "eslint:fix": "eslint src/**/*.ts --fix",
+    "format:fix": "prettier --write \"**/*.{ts,tsx,json}\"",
+    "release": "auto shipit",
+    "release:canary": "auto canary"
+  },
+  "license": "MIT",
+  "devDependencies": {
+    "@types/jest": "^27.0.1",
+    "@types/react": "^17.0.18",
+    "auto": "^10.31.0",
+    "eslint": "^7.32.0",
+    "jest": "^27.0.6",
+    "prettier": "^2.3.2",
+    "react": "^17.0.2",
+    "typescript": "^4.3.5"
+  }
+}

src/index.tsx

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+export * from './useIonHeaderParallax'

src/useIonHeaderParallax.ts

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+import * as React from 'react'
+
+export type UseIonicHeaderParallxInput = {
+  image: string
+  expandedColor: string
+  titleColor: string
+  maximumHeight?: number
+}
+
+export type UseIonHeaderParallxInputResult = {
+  ref: React.MutableRefObject<HTMLElement | null>
+}
+
+export function UseIonHeaderParallxInputResult({}: UseIonicHeaderParallxInput): UseIonHeaderParallxInputResult {
+  const headerRef = React.useRef<HTMLElement>(null)
+
+  let header: HTMLElement
+  let toolbar: HTMLElement | null
+  let toolbarBackground: HTMLElement | null
+  let imageOverlay: HTMLElement
+  let colorOverlay: HTMLElement
+  let barButtons: HTMLElement | null
+  let scrollContent: HTMLElement | null
+  // let headerHeight: any
+  // let headerMinHeight: number
+  // let translateAmt: any
+  // let scaleAmt: any
+  // let scrollTop: any
+  // let lastScrollTop: any
+  // let ticking: any
+  // let originalToolbarBgColor: string
+  let overlayTitle: HTMLElement | null
+  let ionTitle: HTMLElement | null
+  // let overlayButtons: HTMLElement[]
+  // let scrollContentPaddingTop: number
+
+  React.useEffect(() => {
+    setTimeout(() => {
+      try {
+        initElements()
+        initStyles()
+        initEvents()
+      } catch (e) {
+        throw e
+      }
+    }, 100)
+  }, [])
+
+  const initElements = () => {
+    if (!(headerRef && headerRef.current)) throw new ReferenceError('Ref is required')
+
+    const parentElement = headerRef.current.parentElement
+
+    if (!parentElement) throw new Error('No parentElemnt')
+
+    header = headerRef.current
+
+    // check this
+    toolbar = header.querySelector('IonToolbar')
+
+    if (!toolbar) {
+      throw new Error('Parallax requires a <IonToolbar> or navbar element on the page to work.')
+    }
+
+    if (!toolbar.shadowRoot) {
+      throw new Error('Parallax requires a shadowRoot <IonToolbar>')
+    }
+
+    ionTitle = toolbar.querySelector('IonTitle')
+
+    toolbarBackground = toolbar.shadowRoot.querySelector('.toolbar-background')
+
+    console.log('toolbarBackground', toolbarBackground)
+
+    barButtons = header.querySelector('IonButtons')
+
+    const ionContent = parentElement.querySelector('ion-content')
+
+    if (!ionContent) throw new Error('Parallax directive requires an <IonContent> element on the page to work.')
+
+    if (!ionContent.shadowRoot) throw new Error('Parallax requires a shadowRoot <ion-content>')
+
+    scrollContent = ionContent.shadowRoot.querySelector('.inner-scroll')
+
+    if (!scrollContent) {
+      throw new Error('Parallax directive requires an <IonContent> element on the page to work.')
+    }
+
+    // Create image overlay
+    imageOverlay = document.createElement('div')
+    console.log('imageOverlay', imageOverlay)
+    imageOverlay.classList.add('image-overlay')
+
+    colorOverlay = document.createElement('div')
+
+    colorOverlay.classList.add('color-overlay')
+
+    colorOverlay.appendChild(imageOverlay)
+    header.appendChild(colorOverlay)
+
+    // Copy title and buttons
+    overlayTitle = ionTitle && (ionTitle.cloneNode(true) as HTMLElement)
+
+    if (!overlayTitle) throw new Error('')
+    overlayTitle.classList.add('parallax-title')
+
+    setTimeout(() => {
+      const toolbarTitle = overlayTitle?.shadowRoot?.querySelector('.toolbar-title') as HTMLElement
+      toolbarTitle.style.pointerEvents = 'unset'
+    })
+
+    if (overlayTitle) {
+      imageOverlay.appendChild(overlayTitle)
+    }
+    if (barButtons) {
+      imageOverlay.appendChild(barButtons)
+    }
+
+    console.log('finished')
+  }
+
+  const initStyles = () => {}
+
+  const initEvents = () => {}
+
+  return {
+    ref: headerRef,
+  }
+}

tsconfig.json

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+{
+  "compilerOptions": {
+    /* Basic Options */
+    // "incremental": true,                   /* Enable incremental compilation */
+    "target": "es6" /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019' or 'ESNEXT'. */,
+    "module": "commonjs" /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */,
+    "lib": ["DOM"] /* Specify library files to be included in the compilation. */,
+    // "allowJs": true,                       /* Allow javascript files to be compiled. */
+    // "checkJs": true,                       /* Report errors in .js files. */
+    // "jsx": "preserve",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */
+    "declaration": true /* Generates corresponding '.d.ts' file. */,
+    "declarationMap": true /* Generates a sourcemap for each corresponding '.d.ts' file. */,
+    "sourceMap": true /* Generates corresponding '.map' file. */,
+    // "outFile": "./",                       /* Concatenate and emit output to single file. */
+    "outDir": "./dist" /* Redirect output structure to the directory. */,
+    // "rootDir": "./src" /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */,
+    // "composite": true,                     /* Enable project compilation */
+    // "tsBuildInfoFile": "./",               /* Specify file to store incremental compilation information */
+    // "removeComments": true,                /* Do not emit comments to output. */
+    // "noEmit": true,                        /* Do not emit outputs. */
+    // "importHelpers": true,                 /* Import emit helpers from 'tslib'. */
+    // "downlevelIteration": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */
+    // "isolatedModules": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */
+    "noUnusedParameters": true,
+    "skipLibCheck": true,
+    "noImplicitAny": true,
+    "isolatedModules": true,
+    "noUnusedLocals": true,
+    "moduleResolution": "node",
+    "baseUrl": "./src",
+    "paths": {
+      "~*": ["./*"]
+    },
+    /* Strict Type-Checking Options */
+    "strict": true /* Enable all strict type-checking options. */,
+    // "noImplicitAny": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */
+    // "strictNullChecks": true,              /* Enable strict null checks. */
+    // "strictFunctionTypes": true,           /* Enable strict checking of function types. */
+    // "strictBindCallApply": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */
+    // "strictPropertyInitialization": true,  /* Enable strict checking of property initialization in classes. */
+    // "noImplicitThis": true,                /* Raise error on 'this' expressions with an implied 'any' type. */
+    // "alwaysStrict": true,                  /* Parse in strict mode and emit "use strict" for each source file. */
+
+    /* Additional Checks */
+    // "noUnusedLocals": true,                /* Report errors on unused locals. */
+    // "noUnusedParameters": true,            /* Report errors on unused parameters. */
+    // "noImplicitReturns": true,             /* Report error when not all code paths in function return a value. */
+    // "noFallthroughCasesInSwitch": true,    /* Report errors for fallthrough cases in switch statement. */
+
+    /* Module Resolution Options */
+    // "moduleResolution": "node",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */
+    // "baseUrl": "./",                       /* Base directory to resolve non-absolute module names. */
+    // "paths": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */
+    // "rootDirs": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */
+    // "typeRoots": [],                       /* List of folders to include type definitions from. */
+    // "types": [],                           /* Type declaration files to be included in compilation. */
+    // "allowSyntheticDefaultImports": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */
+    "esModuleInterop": true /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
+    // "preserveSymlinks": true,              /* Do not resolve the real path of symlinks. */
+    // "allowUmdGlobalAccess": true,          /* Allow accessing UMD globals from modules. */
+
+    /* Source Map Options */
+    // "sourceRoot": "",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */
+    // "mapRoot": "",                         /* Specify the location where debugger should locate map files instead of generated locations. */
+    // "inlineSourceMap": true,               /* Emit a single file with source maps instead of having a separate file. */
+    // "inlineSources": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */
+
+    /* Experimental Options */
+    // "experimentalDecorators": true,        /* Enables experimental support for ES7 decorators. */
+    // "emitDecoratorMetadata": true,         /* Enables experimental support for emitting type metadata for decorators. */
+  },
+  "include": ["src", "@types"],
+  "exclude": ["node_modules"]
+}