Local Fonts (#81)

* moved validate font logic

* google fonts working

* fixes

* minor improvements

* fix linter

* local fonts

* fixes

* Changeset

* changeset

* refactor

* refactor

* update branch

* minor fix

* move files around

* try to refactor

* refactor

* add todo

* refactor

* refactor

* refactor

* refactor

* refactor

* refactor

* refactor move files to their concrete location

---------

Co-authored-by: Jordi Sala Morales <[email protected]>

.changeset/sweet-months-speak.md

@@ -0,0 +1,5 @@
+---
+"penpot-exporter": minor
+---
+
+Added support for Source Sans Pro font (penpot local font)

plugin-src/transformers/partials/transformText.ts

@@ -1,18 +1,15 @@
 import { transformFills } from '@plugin/transformers/partials';
-import {
-  translateFills,
-  translateHorizontalAlign,
-  translateVerticalAlign
-} from '@plugin/translators';
+import { translateFills } from '@plugin/translators';
 import {
   translateFontId,
   translateFontStyle,
-  translateFontVariantId,
   translateGrowType,
+  translateHorizontalAlign,
   translateLetterSpacing,
   translateLineHeight,
   translateTextDecoration,
-  translateTextTransform
+  translateTextTransform,
+  translateVerticalAlign
 } from '@plugin/translators/text';
 
 import { TextStyle } from '@ui/lib/types/text/textContent';
@@ -74,9 +71,8 @@ const transformTextStyle = (
   >
 ): Partial<TextStyle> => {
   return {
+    ...translateFontId(segment.fontName, segment.fontWeight),
     fontFamily: segment.fontName.family,
-    fontId: translateFontId(segment.fontName),
-    fontVariantId: translateFontVariantId(segment.fontName, segment.fontWeight),
     fontSize: segment.fontSize.toString(),
     fontStyle: translateFontStyle(segment.fontName.style),
     fontWeight: segment.fontWeight.toString(),

plugin-src/translators/index.ts

@@ -1,7 +1,5 @@
 export * from './translateBlendMode';
 export * from './translateShadowEffects';
 export * from './translateFills';
-export * from './translateHorizontalAlign';
 export * from './translateStrokes';
 export * from './translateVectorPaths';
-export * from './translateVerticalAlign';

plugin-src/translators/text/custom/index.ts

@@ -0,0 +1 @@
+export * from './translateCustomFont';

plugin-src/translators/text/custom/translateCustomFont.ts

@@ -0,0 +1,17 @@
+import slugify from 'slugify';
+
+import { FontId } from '@ui/lib/types/text/textContent';
+
+/**
+ * @TODO: implement custom font loading for Penpot
+ */
+export const translateCustomFont = (fontName: FontName): FontId | undefined => {
+  // For now display a message in the UI, so the user knows
+  // that the file is using a custom font not present in Penpot
+  figma.ui.postMessage({ type: 'FONT_NAME', data: fontName.family });
+
+  return {
+    fontId: slugify(fontName.family.toLowerCase()),
+    fontVariantId: fontName.style.toLowerCase().replace(/\s/g, '')
+  };
+};

plugin-src/translators/text/gfonts/googleFont.ts

@@ -0,0 +1,11 @@
+export type GoogleFont = {
+  family: string;
+  variants?: string[];
+  subsets?: string[];
+  version: string;
+  lastModified: string;
+  files?: { [key: string]: string | undefined };
+  category: string;
+  kind: string;
+  menu: string;
+};

plugin-src/translators/text/gfonts/index.ts

@@ -0,0 +1,3 @@
+export * from './googleFont';
+export * from './translateGoogleFont';
+export * from './translateFontVariantId';

plugin-src/translators/text/gfonts/translateFontVariantId.ts

@@ -0,0 +1,20 @@
+import { GoogleFont } from './googleFont';
+
+export const translateFontVariantId = (
+  googleFont: GoogleFont,
+  fontName: FontName,
+  fontWeight: number
+) => {
+  // check match directly by style
+  const variant = googleFont.variants?.find(variant => variant === fontName.style.toLowerCase());
+
+  if (variant !== undefined) return variant;
+
+  // check match by style and weight
+  const italic = fontName.style.toLowerCase().includes('italic') ? 'italic' : '';
+  const variantWithWeight = googleFont.variants?.find(
+    variant => variant === `${fontWeight.toString()}${italic}`
+  );
+
+  if (variantWithWeight !== undefined) return variantWithWeight;
+};

plugin-src/translators/text/gfonts/translateGoogleFont.ts

@@ -0,0 +1,23 @@
+import slugify from 'slugify';
+
+import { translateFontVariantId } from '@plugin/translators/text/gfonts';
+
+import { FontId } from '@ui/lib/types/text/textContent';
+
+import { items as gfonts } from './gfonts.json';
+import { GoogleFont } from './googleFont';
+
+export const translateGoogleFont = (fontName: FontName, fontWeight: number): FontId | undefined => {
+  const googleFont = getGoogleFont(fontName);
+
+  if (googleFont === undefined) return;
+
+  return {
+    fontId: `gfont-${slugify(fontName.family.toLowerCase())}`,
+    fontVariantId: translateFontVariantId(googleFont, fontName, fontWeight)
+  };
+};
+
+const getGoogleFont = (fontName: FontName): GoogleFont | undefined => {
+  return gfonts.find(font => font.family === fontName.family);
+};

plugin-src/translators/text/index.ts

@@ -1,7 +1,9 @@
-export * from './translateFontIds';
+export * from './translateFontId';
 export * from './translateFontStyle';
 export * from './translateGrowType';
+export * from './translateHorizontalAlign';
 export * from './translateLetterSpacing';
 export * from './translateLineHeight';
 export * from './translateTextDecoration';
 export * from './translateTextTransform';
+export * from './translateVerticalAlign';

plugin-src/translators/text/local/index.ts

@@ -0,0 +1,3 @@
+export * from './localFont';
+export * from './translateLocalFont';
+export * from './translateFontVariantId';

plugin-src/translators/text/local/localFont.ts

@@ -0,0 +1,14 @@
+export type LocalFont = {
+  id: string;
+  name: string;
+  family: string;
+  variants?: Variant[];
+};
+
+type Variant = {
+  id: string;
+  name: string;
+  weight: string;
+  style: string;
+  suffix?: string;
+};

plugin-src/translators/text/local/localFonts.json

@@ -0,0 +1,75 @@
+{
+  "items": [
+    {
+      "id": "sourcesanspro",
+      "name": "Source Sans Pro",
+      "family": "sourcesanspro",
+      "variants": [
+        {
+          "id": "200",
+          "name": "200",
+          "weight": "200",
+          "style": "normal",
+          "suffix": "extralight"
+        },
+        {
+          "id": "200italic",
+          "name": "200 (italic)",
+          "weight": "200",
+          "style": "italic",
+          "suffix": "extralightitalic"
+        },
+        {
+          "id": "300",
+          "name": "300",
+          "weight": "300",
+          "style": "normal",
+          "suffix": "light"
+        },
+        {
+          "id": "300italic",
+          "name": "300 (italic)",
+          "weight": "300",
+          "style": "italic",
+          "suffix": "lightitalic"
+        },
+        {
+          "id": "regular",
+          "name": "regular",
+          "weight": "400",
+          "style": "normal"
+        },
+        {
+          "id": "italic",
+          "name": "italic",
+          "weight": "400",
+          "style": "italic"
+        },
+        {
+          "id": "bold",
+          "name": "bold",
+          "weight": "bold",
+          "style": "normal"
+        },
+        {
+          "id": "bolditalic",
+          "name": "bold (italic)",
+          "weight": "bold",
+          "style": "italic"
+        },
+        {
+          "id": "black",
+          "name": "black",
+          "weight": "900",
+          "style": "normal"
+        },
+        {
+          "id": "blackitalic",
+          "name": "black (italic)",
+          "weight": "900",
+          "style": "italic"
+        }
+      ]
+    }
+  ]
+}

plugin-src/translators/text/local/translateFontVariantId.ts

@@ -0,0 +1,30 @@
+import { LocalFont } from './localFont';
+
+export const translateFontVariantId = (
+  localFont: LocalFont,
+  fontName: FontName,
+  fontWeight: number
+): string | undefined => {
+  // check match by style and weight
+  const italic = fontName.style.toLowerCase().includes('italic');
+  const variantWithStyleWeight = localFont.variants?.find(
+    variant =>
+      variant.weight === fontWeight.toString() && variant.style === (italic ? 'italic' : 'normal')
+  );
+
+  if (variantWithStyleWeight !== undefined) return variantWithStyleWeight.id;
+
+  // check match directly by suffix if exists
+  const variant = localFont.variants?.find(
+    variant => variant.suffix === fontName.style.toLowerCase().replace(/\s/g, '')
+  );
+
+  if (variant !== undefined) return variant.id;
+
+  // check match directly by id
+  const variantById = localFont.variants?.find(
+    variant => variant.id === fontName.style.toLowerCase().replace(/\s/g, '')
+  );
+
+  if (variantById !== undefined) return variantById.id;
+};

plugin-src/translators/text/local/translateLocalFont.ts

@@ -0,0 +1,20 @@
+import { LocalFont, translateFontVariantId } from '@plugin/translators/text/local';
+
+import { FontId } from '@ui/lib/types/text/textContent';
+
+import { items as localFonts } from './localFonts.json';
+
+export const translateLocalFont = (fontName: FontName, fontWeight: number): FontId | undefined => {
+  const localFont = getLocalFont(fontName);
+
+  if (localFont === undefined) return;
+
+  return {
+    fontId: localFont.id,
+    fontVariantId: translateFontVariantId(localFont, fontName, fontWeight)
+  };
+};
+
+const getLocalFont = (fontName: FontName): LocalFont | undefined => {
+  return localFonts.find(localFont => localFont.name === fontName.family);
+};

plugin-src/translators/text/translateFontId.ts

@@ -0,0 +1,13 @@
+import { FontId } from '@ui/lib/types/text/textContent';
+
+import { translateCustomFont } from './custom';
+import { translateGoogleFont } from './gfonts';
+import { translateLocalFont } from './local';
+
+export const translateFontId = (fontName: FontName, fontWeight: number): FontId | undefined => {
+  return (
+    translateGoogleFont(fontName, fontWeight) ??
+    translateLocalFont(fontName, fontWeight) ??
+    translateCustomFont(fontName)
+  );
+};

ui-src/lib/types/text/textContent.d.ts

@@ -28,10 +28,8 @@ type TextNode = {
   key?: string;
 } & TextStyle;
 
-type TextStyle = {
-  fontId?: string;
+type TextStyle = FontId & {
   fontFamily?: string;
-  fontVariantId?: string;
   fontSize?: string;
   fontStyle?: TextFontStyle;
   fontWeight?: string;
@@ -46,3 +44,8 @@ type TextStyle = {
   textDirection?: 'ltr' | 'rtl' | 'auto';
   fills?: Fill[];
 };
+
+export type FontId = {
+  fontId?: string;
+  fontVariantId?: string;
+};