font selector with proper styles and functionality + local font selector

src/App.scss

@@ -375,7 +375,6 @@ nav {
   user-select: none;
   color: var(--text);
   border: none;
-  border-radius: var(--roundness);
   cursor: pointer;
   background-color: var(--background);
   box-shadow: var(--shadow);
@@ -511,7 +510,6 @@ textarea {
   --_padding: 0.5em;
 
   border: none;
-  border-radius: var(--roundness);
   background-color: var(--background);
   color: var(--text);
   box-shadow: var(--shadow);
@@ -617,6 +615,17 @@ textarea {
   }
 }
 
+.input,
+.button-default {
+  --_roundness-left: var(--roundness);
+  --_roundness-right: var(--roundness);
+
+  border-top-left-radius: var(--_roundness-left);
+  border-bottom-left-radius: var(--_roundness-left);
+  border-top-right-radius: var(--_roundness-right);
+  border-bottom-right-radius: var(--_roundness-right);
+}
+
 // Textareas should have stock line-height + vertical padding instead of huge line-height
 textarea.input {
   padding: var(--_padding);
@@ -662,22 +671,20 @@ option {
   display: inline-flex;
   vertical-align: middle;
 
-  button,
-  .button-dropdown {
+  > * {
+    --_roundness-left: 0;
+    --_roundness-right: 0;
+
     position: relative;
     flex: 1 1 auto;
-
-    &:not(:last-child),
-    &:not(:last-child) .button-default {
-      border-top-right-radius: 0;
-      border-bottom-right-radius: 0;
   }
 
-    &:not(:first-child),
-    &:not(:first-child) .button-default {
-      border-top-left-radius: 0;
-      border-bottom-left-radius: 0;
+  > *:first-child {
+    --_roundness-left: var(--roundness);
   }
+
+  > *:last-child {
+    --_roundness-right: var(--roundness);
   }
 }
 

src/components/font_control/font_control.js

@@ -1,13 +1,19 @@
-import { set } from 'lodash'
+import { set, clone } from 'lodash'
 import Select from '../select/select.vue'
 import Checkbox from 'src/components/checkbox/checkbox.vue'
 import Popover from 'src/components/popover/popover.vue'
 
 import { library } from '@fortawesome/fontawesome-svg-core'
-import { faExclamationTriangle } from '@fortawesome/free-solid-svg-icons'
+import {
+  faExclamationTriangle,
+  faKeyboard,
+  faFont
+} from '@fortawesome/free-solid-svg-icons'
 
 library.add(
-  faExclamationTriangle
+  faExclamationTriangle,
+  faKeyboard,
+  faFont
 )
 
 const PRESET_FONTS = new Set(['serif', 'sans-serif', 'monospace', 'inherit'])
@@ -24,20 +30,38 @@ export default {
   emits: ['update:modelValue'],
   data () {
     return {
-      localValue: this.modelValue,
-      customFamily: '',
+      manualEntry: true,
+      localValue: clone(this.modelValue),
+      familyCustomLocal: null,
       availableOptions: [
         this.noInherit ? '' : 'inherit',
-        'local',
-        ...(this.options || []),
         'serif',
+        'sans-serif',
         'monospace',
-        'sans-serif'
+        'local',
+        ...(this.options || [])
       ].filter(_ => _)
     }
   },
   beforeUpdate () {
-    this.localValue = this.modelValue
+    this.localValue = clone(this.modelValue)
+    if (this.familyCustomLocal === null && !this.isInvalidFamily(this.modelValue?.family)) {
+      this.familyCustomLocal = this.modelValue?.family
+    }
+  },
+  methods: {
+    lookupLocalFonts () {
+      if (!this.fontsList) {
+        this.$store.dispatch('queryLocalFonts')
+      }
+      this.toggleManualEntry()
+    },
+    isInvalidFamily (value) {
+      return PRESET_FONTS.has(value) || (value === '')
+    },
+    toggleManualEntry () {
+      this.manualEntry = !this.manualEntry
+    }
   },
   computed: {
     present () {
@@ -46,32 +70,39 @@ export default {
     defaultValue () {
       return this.localValue || this.fallback || {}
     },
+    fontsListCapable () {
+      return this.$store.state.interface.browserSupport.localFonts
+    },
+    fontsList () {
+      return this.$store.state.interface.localFonts
+    },
     family: {
       get () {
         return this.defaultValue.family
       },
       set (v) {
+        this.familyCustomLocal = ''
         set(this.localValue, 'family', v)
         this.$emit('update:modelValue', this.localValue)
       }
     },
     familyCustom: {
       get () {
-        return this.customFamily
+        return this.familyCustomLocal
       },
       set (v) {
-        this.customFamily = v
-        if (!PRESET_FONTS.has(this.customFamily)) {
+        this.familyCustomLocal = v
+        if (!this.isInvalidFamily(v)) {
           set(this.localValue, 'family', v)
-          this.$emit('update:modelValue', this.customFamily)
+          this.$emit('update:modelValue', this.localValue)
         }
       }
     },
     invalidCustom () {
-      return PRESET_FONTS.has(this.customFamily)
+      return this.isInvalidFamily(this.familyCustomLocal)
     },
     isCustom () {
-      return !PRESET_FONTS.has(this.family)
+      return !PRESET_FONTS.has(this.defaultValue.family)
     },
     preset: {
       get () {

src/components/font_control/font_control.vue

@@ -10,15 +10,6 @@
     >
       {{ label }}
     </label>
-    {{ ' ' }}
-    <Checkbox
-      v-if="typeof fallback !== 'undefined'"
-      :id="name + '-o'"
-      :modelValue="present"
-      @change="$emit('update:modelValue', typeof modelValue === 'undefined' ? fallback : undefined)"
-    >
-      {{ $t('settings.style.themes3.define') }}
-    </Checkbox>
     <p>
       <Select
         :id="name + '-font-switcher'"
@@ -34,15 +25,89 @@
           {{ $t('settings.style.themes3.font.' + option) }}
         </option>
       </Select>
+      {{ ' ' }}
+      <Checkbox
+        v-if="typeof fallback !== 'undefined'"
+        :id="name + '-o'"
+        :modelValue="present"
+        @change="$emit('update:modelValue', typeof modelValue === 'undefined' ? fallback : undefined)"
+      >
+        {{ $t('settings.style.themes3.define') }}
+      </Checkbox>
     </p>
-    <p>
+    <p v-if="isCustom">
+      <label
+        v-if="fontsList !== null && !manualEntry"
+        :id="name + '-label'"
+        :for="preset === 'custom' ? name : name + '-font-switcher'"
+        class="label"
+      >
+        {{ $t('settings.style.themes3.font.select') }}
+      </label>
+      <label
+        v-else
+        :id="name + '-label'"
+        :for="preset === 'custom' ? name : name + '-font-switcher'"
+        class="label"
+      >
+        <i18n-t
+          keypath="settings.style.themes3.font.entry"
+          tag="span"
+        >
+          <template #fontFamily>
+            <code>font-family</code>
+          </template>
+        </i18n-t>
+      </label>
+      {{ ' ' }}
+      <span class="btn-group">
+        <button
+          v-if="fontsListCapable && (fontsList === null || manualEntry)"
+          class="btn button-default"
+          @click="lookupLocalFonts"
+          :title="$t('settings.style.themes3.font.lookup_local_fonts')"
+        >
+          <FAIcon
+            fixed-width
+            icon="font"
+          />
+        </button>
           <input
-        v-if="isCustom"
+            v-if="fontsLists === null || manualEntry"
             :id="name"
             v-model="familyCustom"
             class="input custom-font"
             type="text"
           >
+      </span>
+      <span class="btn-group">
+        <button
+          v-if="fontsList !== null && !manualEntry"
+          class="btn button-default"
+          @click="toggleManualEntry"
+          :title="$t('settings.style.themes3.font.enter_manually')"
+        >
+          <FAIcon
+            fixed-width
+            icon="keyboard"
+          />
+        </button>
+        <Select
+          v-if="fontsList !== null && !manualEntry"
+          :id="name + '-local-font-switcher'"
+          v-model="familyCustom"
+          class="custom-font"
+        >
+          <option
+            v-for="option in fontsList.values()"
+            :key="option"
+            :value="option"
+            :style="{ fontFamily: option }"
+          >
+            {{ option }}
+          </option>
+        </Select>
+      </span>
       <span
         v-if="invalidCustom"
         class="InvalidIndicator"
@@ -70,8 +135,9 @@
 
 <style lang="scss">
 .font-control {
-  input.custom-font {
-    min-width: 12em;
+  .custom-font {
+    min-width: 20em;
+    max-width: 20em;
   }
 }
 

src/components/settings_modal/tabs/theme_tab/theme_tab.scss

@@ -10,6 +10,10 @@
     margin-right: 0.25em;
   }
 
+  .btn-group .btn {
+    margin: 0;
+  }
+
   .style-control {
     display: flex;
     align-items: baseline;

src/i18n/en.json

@@ -746,14 +746,19 @@
     "more_settings": "More settings",
     "style": {
       "themes3": {
-        "define": "Include in theme",
+        "define": "Override",
         "font": {
           "local": "Local font (must be installed on computer)",
           "serif": "Serif (browser default)",
           "sans-serif": "Sans-serif (browser default)",
           "monospace": "Monospace (browser default)",
           "inherit": "Same as parent component",
-          "invalid_custom_reserved": "This is a reserved font name, it will not be saved as custom font - use dropdown instead"
+          "invalid_custom_reserved": "Empty or reserved font name, it will not be saved as custom font - use dropdown instead",
+          "font_list_unavailable": "Couldn't get locally installed fonts: {error}",
+          "lookup_local_fonts": "Load list of fonts installed on this computer",
+          "enter_manually": "Enter font name family manually",
+          "entry": "Font's {fontFamily}",
+          "select": "Select local font"
         }
       },
       "switcher": {

src/modules/interface.js

@@ -1,4 +1,5 @@
 const defaultState = {
+  localFonts: null,
   themeApplied: false,
   temporaryChangesTimeoutId: null, // used for temporary options that revert after a timeout
   temporaryChangesConfirm: () => {}, // used for applying temporary options
@@ -17,7 +18,8 @@ const defaultState = {
     cssFilter: window.CSS && window.CSS.supports && (
       window.CSS.supports('filter', 'drop-shadow(0 0)') ||
       window.CSS.supports('-webkit-filter', 'drop-shadow(0 0)')
-    )
+    ),
+    localFonts: typeof window.queryLocalFonts === 'function'
   },
   layoutType: 'normal',
   globalNotices: [],
@@ -104,6 +106,10 @@ const interfaceMod = {
     },
     setLastTimeline (state, value) {
       state.lastTimeline = value
+    },
+    setFontsList (state, value) {
+      console.log(value)
+      state.localFonts = new Set(value.map(font => font.family))
     }
   },
   actions: {
@@ -178,6 +184,22 @@ const interfaceMod = {
         commit('setLayoutType', wideLayout ? 'wide' : normalOrMobile)
       }
     },
+    queryLocalFonts ({ commit, dispatch }) {
+      window
+        .queryLocalFonts()
+        .then((fonts) => {
+          commit('setFontsList', fonts)
+        })
+        .catch((e) => {
+          dispatch('pushGlobalNotice', {
+            messageKey: 'settings.style.themes3.font.font_list_unavailable',
+            messageArgs: {
+              error: e
+            },
+            level: 'error'
+          })
+        })
+    },
     setLastTimeline ({ commit }, value) {
       commit('setLastTimeline', value)
     }