Merge branch 'develop' into 'scrobbles-age'

# Conflicts:
#   src/i18n/en.json

1 files changed, 163 insertions, 0 deletions

diff --git a/src/services/theme_data/css_utils.js b/src/services/theme_data/css_utils.js
new file mode 100644
index 00000000..a89eac3b
--- /dev/null
+++ b/src/services/theme_data/css_utils.js
@@ -0,0 +1,163 @@
+import { convert } from 'chromatism'
+
+import { hex2rgb, rgba2css } from '../color_convert/color_convert.js'
+
+// This changes what backgrounds are used to "stacked" solid colors so you can see
+// what theme engine "thinks" is actual background color is for purposes of text color
+// generation and for when --stacked variable is used
+const DEBUG = false
+
+export const parseCssShadow = (text) => {
+  const dimensions = /(\d[a-z]*\s?){2,4}/.exec(text)?.[0]
+  const inset = /inset/.exec(text)?.[0]
+  const color = text.replace(dimensions, '').replace(inset, '')
+
+  const [x, y, blur = 0, spread = 0] = dimensions.split(/ /).filter(x => x).map(x => x.trim())
+  const isInset = inset?.trim() === 'inset'
+  const colorString = color.split(/ /).filter(x => x).map(x => x.trim())[0]
+
+  return {
+    x,
+    y,
+    blur,
+    spread,
+    inset: isInset,
+    color: colorString
+  }
+}
+
+export const getCssColorString = (color, alpha = 1) => rgba2css({ ...convert(color).rgb, a: alpha })
+
+export const getCssShadow = (input, usesDropShadow) => {
+  if (input.length === 0) {
+    return 'none'
+  }
+
+  return input
+    .filter(_ => usesDropShadow ? _.inset : _)
+    .map((shad) => [
+      shad.x,
+      shad.y,
+      shad.blur,
+      shad.spread
+    ].map(_ => _ + 'px ').concat([
+      getCssColorString(shad.color, shad.alpha),
+      shad.inset ? 'inset' : ''
+    ]).join(' ')).join(', ')
+}
+
+export const getCssShadowFilter = (input) => {
+  if (input.length === 0) {
+    return 'none'
+  }
+
+  return input
+  // drop-shadow doesn't support inset or spread
+    .filter((shad) => !shad.inset && Number(shad.spread) === 0)
+    .map((shad) => [
+      shad.x,
+      shad.y,
+      // drop-shadow's blur is twice as strong compared to box-shadow
+      shad.blur / 2
+    ].map(_ => _ + 'px').concat([
+      getCssColorString(shad.color, shad.alpha)
+    ]).join(' '))
+    .map(_ => `drop-shadow(${_})`)
+    .join(' ')
+}
+
+export const getCssRules = (rules) => rules.map(rule => {
+  let selector = rule.selector
+  if (!selector) {
+    selector = 'html'
+  }
+  const header = selector + ' {'
+  const footer = '}'
+
+  const virtualDirectives = Object.entries(rule.virtualDirectives || {}).map(([k, v]) => {
+    return '  ' + k + ': ' + v
+  }).join(';\n')
+
+  const directives = Object.entries(rule.directives).map(([k, v]) => {
+    switch (k) {
+      case 'roundness': {
+        return '  ' + [
+          '--roundness: ' + v + 'px'
+        ].join(';\n  ')
+      }
+      case 'shadow': {
+        return '  ' + [
+          '--shadow: ' + getCssShadow(rule.dynamicVars.shadow),
+          '--shadowFilter: ' + getCssShadowFilter(rule.dynamicVars.shadow),
+          '--shadowInset: ' + getCssShadow(rule.dynamicVars.shadow, true)
+        ].join(';\n  ')
+      }
+      case 'background': {
+        if (DEBUG) {
+          return `
+            --background: ${getCssColorString(rule.dynamicVars.stacked)};
+            background-color: ${getCssColorString(rule.dynamicVars.stacked)};
+          `
+        }
+        if (v === 'transparent') {
+          if (rule.component === 'Root') return []
+          return [
+            rule.directives.backgroundNoCssColor !== 'yes' ? ('background-color: ' + v) : '',
+            '  --background: ' + v
+          ].filter(x => x).join(';\n')
+        }
+        const color = getCssColorString(rule.dynamicVars.background, rule.directives.opacity)
+        const cssDirectives = ['--background: ' + color]
+        if (rule.directives.backgroundNoCssColor !== 'yes') {
+          cssDirectives.push('background-color: ' + color)
+        }
+        return cssDirectives.filter(x => x).join(';\n')
+      }
+      case 'blur': {
+        const cssDirectives = []
+        if (rule.directives.opacity < 1) {
+          cssDirectives.push(`--backdrop-filter: blur(${v}) `)
+          if (rule.directives.backgroundNoCssColor !== 'yes') {
+            cssDirectives.push(`backdrop-filter: blur(${v}) `)
+          }
+        }
+        return cssDirectives.join(';\n')
+      }
+      case 'font': {
+        return 'font-family: ' + v
+      }
+      case 'textColor': {
+        if (rule.directives.textNoCssColor === 'yes') { return '' }
+        return 'color: ' + v
+      }
+      default:
+        if (k.startsWith('--')) {
+          const [type, value] = v.split('|').map(x => x.trim()) // woah, Extreme!
+          switch (type) {
+            case 'color': {
+              const color = rule.dynamicVars[k]
+              if (typeof color === 'string') {
+                return k + ': ' + rgba2css(hex2rgb(color))
+              } else {
+                return k + ': ' + rgba2css(color)
+              }
+            }
+            case 'generic':
+              return k + ': ' + value
+            default:
+              return ''
+          }
+        }
+        return ''
+    }
+  }).filter(x => x).map(x => '  ' + x).join(';\n')
+
+  return [
+    header,
+    directives + ';',
+    (rule.component === 'Text' && rule.state.indexOf('faint') < 0 && rule.directives.textNoCssColor !== 'yes') ? '  color: var(--text);' : '',
+    '',
+    virtualDirectives,
+    footer
+  ].join('\n')
+}).filter(x => x)