feat: added qr-code generator

Signed-off-by: Corentin Thomasset <corentin.thomasset74@gmail.com>

CHANGELOG.md

@@ -3,6 +3,9 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## Next
+- [feat] added [qr-code generator](/#/qrcode-generator)
+
 ## 1.4.0
 - [ui] condensed + colored sidenav
 - [feat] added [git memo](/#/git-memo)

README.md

@@ -18,10 +18,10 @@ Here is an unordered list of the current functionalities, and some that may come
 - [x] Markdown editor
 - [x] Lorem ipsum text generator
 - [x] Git memo (cheat sheet)
+- [x] QR code generator
 - [ ] CSS memo (cheat sheet)
 - [ ] REGEX memo (cheat sheet) + tester?
 - [ ] Image exif editor/remover
-- [ ] QR code generator
 - [ ] Bip39 pass-phrase generator
 - [ ] Crontab friendly generator
 - [ ] Image format converter?

package-lock.json

@@ -9990,6 +9990,11 @@
       "integrity": "sha1-fjL3W0E4EpHQRhHxvxQQmsAGUdc=",
       "dev": true
     },
+    "qrcode.vue": {
+      "version": "1.7.0",
+      "resolved": "https://registry.npmjs.org/qrcode.vue/-/qrcode.vue-1.7.0.tgz",
+      "integrity": "sha512-R7t6Y3fDDtcU7L4rtqwGUDP9xD64gJhIwpfjhRCTKmBoYF6SS49PIJHRJ048cse6OI7iwTwgyy2C46N9Ygoc6g=="
+    },
     "qs": {
       "version": "6.5.2",
       "resolved": "https://registry.npmjs.org/qs/-/qs-6.5.2.tgz",

package.json

@@ -15,6 +15,7 @@
     "core-js": "^3.6.4",
     "dompurify": "^2.0.11",
     "marked": "^1.1.0",
+    "qrcode.vue": "^1.7.0",
     "register-service-worker": "^1.7.1",
     "roboto-fontface": "*",
     "vue": "^2.6.11",

src/components/ColorInput.vue

@@ -0,0 +1,58 @@
+<template>
+    <v-text-field v-model="color" hide-details class="ma-0 pa-0" outlined :label="label" v-on:input="$emit('input', color)">
+        <template v-slot:append>
+            <v-menu v-model="menu" top nudge-bottom="101" nudge-left="16" :close-on-content-click="false">
+                <template v-slot:activator="{ on }">
+                    <div :style="swatchStyle" v-on="on" />
+                </template>
+                <v-card>
+                    <v-card-text class="pa-0">
+                        <v-color-picker v-model="color" flat v-on:input="$emit('input', color)"/>
+                    </v-card-text>
+                </v-card>
+            </v-menu>
+        </template>
+    </v-text-field>
+</template>
+
+<script>
+    // From: https://codepen.io/JamieCurnow/pen/KKPjraK
+
+    export default {
+        name: "ColorInput",
+        props:{
+            value: {
+                type: String,
+                default: '#FFFFFF'
+            },
+            label:String
+        },
+        data: () => ({
+            menu: false,
+            color:''
+        }),
+        mounted() {
+            this.color = this.value
+        },
+        computed: {
+            swatchStyle() {
+                const { color, menu } = this
+                return {
+                    backgroundColor: color,
+                    cursor: 'pointer',
+                    height: '30px',
+                    width: '30px',
+                    borderRadius: menu ? '50%' : '4px',
+                    transition: 'border-radius 200ms ease-in-out'
+                }
+            }
+        }
+    }
+</script>
+
+<style scoped lang="less">
+    ::v-deep .v-input__append-inner{
+        margin-top: 13px;
+    }
+
+</style>

src/router.js

@@ -121,7 +121,18 @@ const toolsComponents = [
                 keywords: ['git', 'push', 'rebase', 'merge', 'tag', 'commit', 'checkout']
             }
         ]
-
+    },
+    {
+        title: 'Miscellaneous',
+        child: [
+            {
+                text: 'QR Code generator',
+                path: '/qrcode-generator',
+                icon: 'fa-qrcode',
+                component: () => import('./routes/tools/QRCodeGenerator'),
+                keywords: []
+            }
+        ]
     }
 ];
 

src/routes/tools/QRCodeGenerator.vue

@@ -0,0 +1,137 @@
+<template>
+    <v-card class="single-card">
+        <v-card-title>QR-code generator</v-card-title>
+        <v-card-text>
+            <v-row justify="center" align="center">
+                <v-col cols="12" lg="6" sm="12">
+                    <v-text-field
+                            outlined
+                            v-model="value"
+                            label="Data"
+                            :rules="rules.value"
+                    />
+                    <v-slider v-model="size" min="100" max="1920" label="Size (preview will not change): " thumb-label/>
+                    <v-select
+                            outlined
+                            v-model="level"
+                            :items="levels"
+                            label="Error resistance"
+                    />
+                    <v-row>
+                        <v-col cols="12" md="6" sm="12">
+                            <ColorInput v-model="fgcolor" label="Foreground color"/>
+                        </v-col>
+                        <v-col cols="12" md="6" sm="12">
+                            <ColorInput v-model="bgcolor" label="Background color"/>
+                        </v-col>
+                    </v-row>
+
+                </v-col>
+
+                <v-col cols="12" lg="6" sm="12" class="text-center">
+                    <qrcode-vue
+                            :value="input"
+                            :size="size"
+                            :level="level"
+                            :background="bgcolor"
+                            :foreground="fgcolor"
+                            render-as="svg"
+                            class-name="qrcode-wrapper"
+                    />
+                </v-col>
+            </v-row>
+
+            <div class="text-center mt-3 mb-sm-2">
+                <v-btn @click="download('png')" class="mr-1" color="primary">download as png</v-btn>
+                <v-btn @click="download('svg')" class="ml-1" color="primary">download as svg</v-btn>
+            </div>
+        </v-card-text>
+    </v-card>
+
+</template>
+
+<script>
+    import QrcodeVue from 'qrcode.vue'
+    import colors from "color-name";
+    import ColorInput from "../../components/ColorInput";
+    import {downloadBase64File} from "../../utils/helpers";
+
+    export default {
+        name: "QRCodeGenerator",
+        data: () => ({
+            value: 'https://it-tools.tech',
+            size: 300,
+            level: 'M',
+            bgcolor: '#ffffff',
+            fgcolor: '#000000',
+            levels: [
+                {text: 'Low', value: 'L'},
+                {text: 'Medium', value: 'M'},
+                {text: 'Quartile', value: 'Q'},
+                {text: 'High', value: 'H'}
+            ],
+            rules: {
+                value: [
+                    v => v.length > 0 || 'Value is needed'
+                ],
+                color: [
+                    v => {
+                        v = v.trim()
+                        const isFFFFFF = /^#(?:[0-9a-fA-F]{6})$/.test(v);
+                        const isFFF = /^#(?:[0-9a-fA-F]{3})$/.test(v);
+                        const isRGB = /^rgb\((\d+),\s*(\d+),\s*(\d+)\)$/.test(v);
+                        const isHSL = /^hsl\((\d+),\s*(\d+)%,\s*(\d+)%\)$/.test(v);
+                        const isKeyword = v in colors;
+                        const isTransparent = v === 'transparent';
+
+                        return isFFFFFF || isFFF || isKeyword || isTransparent || isRGB || isHSL || 'Incorrect color.'
+                    }
+                ]
+            }
+        }),
+        methods: {
+            download(type) {
+                const svgEl = this.$el.querySelector('.qrcode-wrapper svg');
+                const svgString = new XMLSerializer().serializeToString(svgEl);
+                const svgUrl = `data:image/svg+xml;base64,${btoa(svgString)}`;
+
+                if (type === 'png') {
+                    const canvas = document.createElement("canvas");
+                    canvas.width = this.size;
+                    canvas.height = this.size;
+                    const ctx = canvas.getContext("2d");
+
+                    const image = new Image();
+                    image.onload = function () {
+                        ctx.drawImage(image, 0, 0);
+                        const result = canvas.toDataURL();
+
+                        downloadBase64File(result, 'qr-code');
+                    };
+                    image.src = svgUrl;
+                } else {
+                    downloadBase64File(svgUrl, 'qr-code');
+                }
+            }
+        },
+        computed: {
+            input() {
+                return this.value
+
+            }
+        },
+        components: {
+            QrcodeVue,
+            ColorInput
+        }
+    }
+</script>
+
+<style scoped lang="less">
+    ::v-deep .qrcode-wrapper {
+        & > * {
+            width: 300px !important;
+            height: 300px !important;
+        }
+    }
+</style>

src/utils/helpers.js

@@ -41,6 +41,13 @@ const randFromArray = (array) => array[Math.floor(Math.random() * array.length)]
 
 const randIntFromInterval = (min, max) => Math.floor(Math.random() * (max - min) + min)
 
+const downloadBase64File = (dataUrl, name = 'file') => {
+    const a = document.createElement("a");
+    a.href = dataUrl;
+    a.download = name;
+    a.click();
+}
+
 export {
     copyToClipboard,
     fileIsImage,
@@ -48,5 +55,6 @@ export {
     isInt,
     debounce,
     randFromArray,
-    randIntFromInterval
+    randIntFromInterval,
+    downloadBase64File
 }