moved themes2 stuff into theme_data.service.js

1 files changed, 345 insertions, 1 deletions

diff --git a/src/services/theme_data/theme_data.service.js b/src/services/theme_data/theme_data.service.js
index b376ef4d..6e477674 100644
--- a/src/services/theme_data/theme_data.service.js
+++ b/src/services/theme_data/theme_data.service.js
@@ -1,5 +1,5 @@
 import { convert, brightness, contrastRatio } from 'chromatism'
-import { alphaBlendLayers, getTextColor, relativeLuminance } from '../color_convert/color_convert.js'
+import { rgb2hex, rgba2css, alphaBlendLayers, getTextColor, relativeLuminance, getCssColor } from '../color_convert/color_convert.js'
 import { LAYERS, DEFAULT_OPACITY, SLOT_INHERITANCE } from './pleromafe.js'
 
 /*
@@ -407,3 +407,347 @@ export const getColors = (sourceColors, sourceOpacity) => SLOT_ORDERED.reduce(({
     }
   }
 }, { colors: {}, opacity: {} })
+
+export const composePreset = (colors, radii, shadows, fonts) => {
+  return {
+    rules: {
+      ...shadows.rules,
+      ...colors.rules,
+      ...radii.rules,
+      ...fonts.rules
+    },
+    theme: {
+      ...shadows.theme,
+      ...colors.theme,
+      ...radii.theme,
+      ...fonts.theme
+    }
+  }
+}
+
+export const generatePreset = (input) => {
+  const colors = generateColors(input)
+  return composePreset(
+    colors,
+    generateRadii(input),
+    generateShadows(input, colors.theme.colors, colors.mod),
+    generateFonts(input)
+  )
+}
+
+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([
+      getCssColor(shad.color, shad.alpha),
+      shad.inset ? 'inset' : ''
+    ]).join(' ')).join(', ')
+}
+
+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([
+      getCssColor(shad.color, shad.alpha)
+    ]).join(' '))
+    .map(_ => `drop-shadow(${_})`)
+    .join(' ')
+}
+
+export const generateColors = (themeData) => {
+  const sourceColors = !themeData.themeEngineVersion
+    ? colors2to3(themeData.colors || themeData)
+    : themeData.colors || themeData
+
+  const { colors, opacity } = getColors(sourceColors, themeData.opacity || {})
+
+  const htmlColors = Object.entries(colors)
+    .reduce((acc, [k, v]) => {
+      if (!v) return acc
+      acc.solid[k] = rgb2hex(v)
+      acc.complete[k] = typeof v.a === 'undefined' ? rgb2hex(v) : rgba2css(v)
+      return acc
+    }, { complete: {}, solid: {} })
+  return {
+    rules: {
+      colors: Object.entries(htmlColors.complete)
+        .filter(([k, v]) => v)
+        .map(([k, v]) => `--${k}: ${v}`)
+        .join(';')
+    },
+    theme: {
+      colors: htmlColors.solid,
+      opacity
+    }
+  }
+}
+
+export const generateRadii = (input) => {
+  let inputRadii = input.radii || {}
+  // v1 -> v2
+  if (typeof input.btnRadius !== 'undefined') {
+    inputRadii = Object
+      .entries(input)
+      .filter(([k, v]) => k.endsWith('Radius'))
+      .reduce((acc, e) => { acc[e[0].split('Radius')[0]] = e[1]; return acc }, {})
+  }
+  const radii = Object.entries(inputRadii).filter(([k, v]) => v).reduce((acc, [k, v]) => {
+    acc[k] = v
+    return acc
+  }, {
+    btn: 4,
+    input: 4,
+    checkbox: 2,
+    panel: 10,
+    avatar: 5,
+    avatarAlt: 50,
+    tooltip: 2,
+    attachment: 5,
+    chatMessage: inputRadii.panel
+  })
+
+  return {
+    rules: {
+      radii: Object.entries(radii).filter(([k, v]) => v).map(([k, v]) => `--${k}Radius: ${v}px`).join(';')
+    },
+    theme: {
+      radii
+    }
+  }
+}
+
+export const generateFonts = (input) => {
+  const fonts = Object.entries(input.fonts || {}).filter(([k, v]) => v).reduce((acc, [k, v]) => {
+    acc[k] = Object.entries(v).filter(([k, v]) => v).reduce((acc, [k, v]) => {
+      acc[k] = v
+      return acc
+    }, acc[k])
+    return acc
+  }, {
+    interface: {
+      family: 'sans-serif'
+    },
+    input: {
+      family: 'inherit'
+    },
+    post: {
+      family: 'inherit'
+    },
+    postCode: {
+      family: 'monospace'
+    }
+  })
+
+  return {
+    rules: {
+      fonts: Object
+        .entries(fonts)
+        .filter(([k, v]) => v)
+        .map(([k, v]) => `--${k}Font: ${v.family}`).join(';')
+    },
+    theme: {
+      fonts
+    }
+  }
+}
+
+const border = (top, shadow) => ({
+  x: 0,
+  y: top ? 1 : -1,
+  blur: 0,
+  spread: 0,
+  color: shadow ? '#000000' : '#FFFFFF',
+  alpha: 0.2,
+  inset: true
+})
+const buttonInsetFakeBorders = [border(true, false), border(false, true)]
+const inputInsetFakeBorders = [border(true, true), border(false, false)]
+const hoverGlow = {
+  x: 0,
+  y: 0,
+  blur: 4,
+  spread: 0,
+  color: '--faint',
+  alpha: 1
+}
+
+export const DEFAULT_SHADOWS = {
+  panel: [{
+    x: 1,
+    y: 1,
+    blur: 4,
+    spread: 0,
+    color: '#000000',
+    alpha: 0.6
+  }],
+  topBar: [{
+    x: 0,
+    y: 0,
+    blur: 4,
+    spread: 0,
+    color: '#000000',
+    alpha: 0.6
+  }],
+  popup: [{
+    x: 2,
+    y: 2,
+    blur: 3,
+    spread: 0,
+    color: '#000000',
+    alpha: 0.5
+  }],
+  avatar: [{
+    x: 0,
+    y: 1,
+    blur: 8,
+    spread: 0,
+    color: '#000000',
+    alpha: 0.7
+  }],
+  avatarStatus: [],
+  panelHeader: [],
+  button: [{
+    x: 0,
+    y: 0,
+    blur: 2,
+    spread: 0,
+    color: '#000000',
+    alpha: 1
+  }, ...buttonInsetFakeBorders],
+  buttonHover: [hoverGlow, ...buttonInsetFakeBorders],
+  buttonPressed: [hoverGlow, ...inputInsetFakeBorders],
+  input: [...inputInsetFakeBorders, {
+    x: 0,
+    y: 0,
+    blur: 2,
+    inset: true,
+    spread: 0,
+    color: '#000000',
+    alpha: 1
+  }]
+}
+export const generateShadows = (input, colors) => {
+  // TODO this is a small hack for `mod` to work with shadows
+  // this is used to get the "context" of shadow, i.e. for `mod` properly depend on background color of element
+  const hackContextDict = {
+    button: 'btn',
+    panel: 'bg',
+    top: 'topBar',
+    popup: 'popover',
+    avatar: 'bg',
+    panelHeader: 'panel',
+    input: 'input'
+  }
+
+  const cleanInputShadows = Object.fromEntries(
+    Object.entries(input.shadows || {})
+      .map(([name, shadowSlot]) => [
+        name,
+        // defaulting color to black to avoid potential problems
+        shadowSlot.map(shadowDef => ({ color: '#000000', ...shadowDef }))
+      ])
+  )
+  const inputShadows = cleanInputShadows && !input.themeEngineVersion
+    ? shadows2to3(cleanInputShadows, input.opacity)
+    : cleanInputShadows || {}
+  const shadows = Object.entries({
+    ...DEFAULT_SHADOWS,
+    ...inputShadows
+  }).reduce((shadowsAcc, [slotName, shadowDefs]) => {
+    const slotFirstWord = slotName.replace(/[A-Z].*$/, '')
+    const colorSlotName = hackContextDict[slotFirstWord]
+    const isLightOnDark = relativeLuminance(convert(colors[colorSlotName]).rgb) < 0.5
+    const mod = isLightOnDark ? 1 : -1
+    const newShadow = shadowDefs.reduce((shadowAcc, def) => [
+      ...shadowAcc,
+      {
+        ...def,
+        color: rgb2hex(computeDynamicColor(
+          def.color,
+          (variableSlot) => convert(colors[variableSlot]).rgb,
+          mod
+        ))
+      }
+    ], [])
+    return { ...shadowsAcc, [slotName]: newShadow }
+  }, {})
+
+  return {
+    rules: {
+      shadows: Object
+        .entries(shadows)
+      // TODO for v2.2: if shadow doesn't have non-inset shadows with spread > 0 - optionally
+      // convert all non-inset shadows into filter: drop-shadow() to boost performance
+        .map(([k, v]) => [
+          `--${k}Shadow: ${getCssShadow(v)}`,
+          `--${k}ShadowFilter: ${getCssShadowFilter(v)}`,
+          `--${k}ShadowInset: ${getCssShadow(v, true)}`
+        ].join(';'))
+        .join(';')
+    },
+    theme: {
+      shadows
+    }
+  }
+}
+
+/**
+ * This handles compatibility issues when importing v2 theme's shadows to current format
+ *
+ * Back in v2 shadows allowed you to use dynamic colors however those used pure CSS3 variables
+ */
+export const shadows2to3 = (shadows, opacity) => {
+  return Object.entries(shadows).reduce((shadowsAcc, [slotName, shadowDefs]) => {
+    const isDynamic = ({ color = '#000000' }) => color.startsWith('--')
+    const getOpacity = ({ color }) => opacity[getOpacitySlot(color.substring(2).split(',')[0])]
+    const newShadow = shadowDefs.reduce((shadowAcc, def) => [
+      ...shadowAcc,
+      {
+        ...def,
+        alpha: isDynamic(def) ? getOpacity(def) || 1 : def.alpha
+      }
+    ], [])
+    return { ...shadowsAcc, [slotName]: newShadow }
+  }, {})
+}
+
+export const colors2to3 = (colors) => {
+  return Object.entries(colors).reduce((acc, [slotName, color]) => {
+    const btnPositions = ['', 'Panel', 'TopBar']
+    switch (slotName) {
+      case 'lightBg':
+        return { ...acc, highlight: color }
+      case 'btnText':
+        return {
+          ...acc,
+          ...btnPositions
+            .reduce(
+              (statePositionAcc, position) =>
+                ({ ...statePositionAcc, ['btn' + position + 'Text']: color })
+              , {}
+            )
+        }
+      default:
+        return { ...acc, [slotName]: color }
+    }
+  }, {})
+}