chore: add textTheme to AppTheme (#1448)

* chore: add textTheme to AppTheme

* chore: extend scaled font size options

* chore: add text styles to extension and rename extension to AFThemeExtension

* chore: use 2021 material design text style tokens

frontend/app_flowy/lib/plugins/grid/presentation/widgets/cell/cell_accessory.dart

@@ -189,7 +189,7 @@ class _Background extends StatelessWidget {
           return FlowyHoverContainer(
             style: HoverStyle(
               borderRadius: Corners.s6Border,
-              hoverColor: CustomColors.of(context).lightGreyHover,
+              hoverColor: AFThemeExtension.of(context).lightGreyHover,
             ),
           );
         } else {
@@ -210,7 +210,8 @@ class CellAccessoryContainer extends StatelessWidget {
     final children =
         accessories.where((accessory) => accessory.enable()).map((accessory) {
       final hover = FlowyHover(
-        style: HoverStyle(hoverColor: CustomColors.of(context).lightGreyHover),
+        style:
+            HoverStyle(hoverColor: AFThemeExtension.of(context).lightGreyHover),
         builder: (_, onHover) => Container(
           width: 26,
           height: 26,

frontend/app_flowy/lib/plugins/grid/presentation/widgets/cell/date_cell/date_editor.dart

@@ -201,7 +201,7 @@ class _CellCalendarWidgetState extends State<_CellCalendarWidget> {
               borderRadius: const BorderRadius.all(Radius.circular(6)),
             ),
             todayDecoration: BoxDecoration(
-              color: CustomColors.of(context).lightGreyHover,
+              color: AFThemeExtension.of(context).lightGreyHover,
               shape: BoxShape.rectangle,
               borderRadius: const BorderRadius.all(Radius.circular(6)),
             ),

frontend/app_flowy/lib/plugins/grid/presentation/widgets/cell/select_option_cell/extension.dart

@@ -10,23 +10,23 @@ extension SelectOptionColorExtension on SelectOptionColorPB {
   Color make(BuildContext context) {
     switch (this) {
       case SelectOptionColorPB.Purple:
-        return CustomColors.tint1;
+        return AFThemeExtension.tint1;
       case SelectOptionColorPB.Pink:
-        return CustomColors.tint2;
+        return AFThemeExtension.tint2;
       case SelectOptionColorPB.LightPink:
-        return CustomColors.tint3;
+        return AFThemeExtension.tint3;
       case SelectOptionColorPB.Orange:
-        return CustomColors.tint4;
+        return AFThemeExtension.tint4;
       case SelectOptionColorPB.Yellow:
-        return CustomColors.tint5;
+        return AFThemeExtension.tint5;
       case SelectOptionColorPB.Lime:
-        return CustomColors.tint6;
+        return AFThemeExtension.tint6;
       case SelectOptionColorPB.Green:
-        return CustomColors.tint7;
+        return AFThemeExtension.tint7;
       case SelectOptionColorPB.Aqua:
-        return CustomColors.tint8;
+        return AFThemeExtension.tint8;
       case SelectOptionColorPB.Blue:
-        return CustomColors.tint9;
+        return AFThemeExtension.tint9;
       default:
         throw ArgumentError;
     }

frontend/app_flowy/lib/plugins/grid/presentation/widgets/cell/select_option_cell/select_option_editor.dart

@@ -214,7 +214,7 @@ class _CreateOptionCell extends StatelessWidget {
         const HSpace(10),
         SelectOptionTag(
           name: name,
-          color: CustomColors.of(context).lightGreyHover,
+          color: AFThemeExtension.of(context).lightGreyHover,
           onSelected: () => context
               .read<SelectOptionCellEditorBloc>()
               .add(SelectOptionEditorEvent.newOption(name)),

frontend/app_flowy/lib/plugins/grid/presentation/widgets/footer/grid_footer.dart

@@ -15,7 +15,7 @@ class GridAddRowButton extends StatelessWidget {
   Widget build(BuildContext context) {
     return FlowyButton(
       text: FlowyText.medium(LocaleKeys.grid_row_newRow.tr(), fontSize: 12),
-      hoverColor: CustomColors.of(context).lightGreyHover,
+      hoverColor: AFThemeExtension.of(context).lightGreyHover,
       onTap: () => context.read<GridBloc>().add(const GridEvent.createRow()),
       leftIcon: svgWidget(
         "home/add",

frontend/app_flowy/lib/plugins/grid/presentation/widgets/header/field_cell.dart

@@ -166,7 +166,7 @@ class FieldCellButton extends StatelessWidget {
         .replaceAll(Characters(''), Characters('\u{200B}'))
         .toString();
     return FlowyButton(
-      hoverColor: CustomColors.of(context).lightGreyHover,
+      hoverColor: AFThemeExtension.of(context).lightGreyHover,
       onTap: onTap,
       leftIcon: svgWidget(
         field.fieldType.iconName(),

frontend/app_flowy/lib/plugins/grid/presentation/widgets/header/grid_header.dart

@@ -182,7 +182,7 @@ class CreateFieldButton extends StatelessWidget {
           LocaleKeys.grid_field_newColumn.tr(),
           fontSize: 12,
         ),
-        hoverColor: CustomColors.of(context).lightGreyHover,
+        hoverColor: AFThemeExtension.of(context).lightGreyHover,
         onTap: () {},
         leftIcon: svgWidget(
           "home/add",

frontend/app_flowy/lib/plugins/grid/presentation/widgets/row/row_detail.dart

@@ -202,7 +202,7 @@ class _CreateFieldButtonState extends State<_CreateFieldButton> {
             LocaleKeys.grid_field_newColumn.tr(),
             fontSize: 12,
           ),
-          hoverColor: CustomColors.of(context).lightGreyHover,
+          hoverColor: AFThemeExtension.of(context).lightGreyHover,
           onTap: () {},
           leftIcon: svgWidget("home/add"),
         ),

frontend/app_flowy/lib/user/presentation/welcome_screen.dart

@@ -56,7 +56,7 @@ class WelcomeScreen extends StatelessWidget {
       child: FlowyTextButton(
         LocaleKeys.workspace_create.tr(),
         fontSize: 14,
-        hoverColor: CustomColors.of(context).lightGreyHover,
+        hoverColor: AFThemeExtension.of(context).lightGreyHover,
         onPressed: () {
           context.read<WelcomeBloc>().add(
               WelcomeEvent.createWorkspace(LocaleKeys.workspace_hint.tr(), ""));
@@ -100,7 +100,7 @@ class WorkspaceItem extends StatelessWidget {
       height: 46,
       child: FlowyTextButton(
         workspace.name,
-        hoverColor: CustomColors.of(context).lightGreyHover,
+        hoverColor: AFThemeExtension.of(context).lightGreyHover,
         fontSize: 14,
         onPressed: () => onPressed(workspace),
       ),

frontend/app_flowy/lib/workspace/presentation/home/menu/app/section/item.dart

@@ -51,7 +51,7 @@ class ViewSectionItem extends StatelessWidget {
               onTap: () => onSelected(blocContext.read<ViewBloc>().state.view),
               child: FlowyHover(
                 style: HoverStyle(
-                  hoverColor: CustomColors.of(context).greySelect,
+                  hoverColor: AFThemeExtension.of(context).greySelect,
                 ),
                 // If current state.isEditing is true, the hover should not
                 // rebuild when onEnter/onExit events happened.

frontend/app_flowy/lib/workspace/presentation/widgets/toggle/toggle.dart

@@ -26,7 +26,7 @@ class Toggle extends StatelessWidget {
   Widget build(BuildContext context) {
     final backgroundColor = value
         ? activeBackgroundColor ?? Theme.of(context).colorScheme.primary
-        : activeBackgroundColor ?? CustomColors.of(context).toggleOffFill;
+        : activeBackgroundColor ?? AFThemeExtension.of(context).toggleOffFill;
     return GestureDetector(
       onTap: (() => onChanged(value)),
       child: Padding(

frontend/app_flowy/packages/flowy_infra/lib/color_extension.dart

@@ -1,7 +1,7 @@
 import 'package:flutter/material.dart';
 
 @immutable
-class CustomColors extends ThemeExtension<CustomColors> {
+class AFThemeExtension extends ThemeExtension<AFThemeExtension> {
   final Color? warning;
   final Color? success;
 
@@ -20,51 +20,67 @@ class CustomColors extends ThemeExtension<CustomColors> {
   final Color lightGreyHover;
   final Color toggleOffFill;
 
-  const CustomColors({
+  final TextStyle code;
+  final TextStyle callout;
+  final TextStyle caption;
+
+  const AFThemeExtension({
     required this.warning,
     required this.success,
     required this.greyHover,
     required this.greySelect,
     required this.lightGreyHover,
     required this.toggleOffFill,
+    required this.code,
+    required this.callout,
+    required this.caption,
   });
 
-  static CustomColors of(BuildContext context) {
-    return Theme.of(context).extension<CustomColors>()!;
+  static AFThemeExtension of(BuildContext context) {
+    return Theme.of(context).extension<AFThemeExtension>()!;
   }
 
   @override
-  CustomColors copyWith({
+  AFThemeExtension copyWith({
     Color? warning,
     Color? success,
     Color? greyHover,
     Color? greySelect,
     Color? lightGreyHover,
     Color? toggleOffFill,
+    TextStyle? code,
+    TextStyle? callout,
+    TextStyle? caption,
   }) {
-    return CustomColors(
+    return AFThemeExtension(
       warning: warning ?? this.warning,
       success: success ?? this.success,
       greyHover: greyHover ?? this.greyHover,
       greySelect: greySelect ?? this.greySelect,
       lightGreyHover: lightGreyHover ?? this.lightGreyHover,
       toggleOffFill: toggleOffFill ?? this.toggleOffFill,
+      code: code ?? this.code,
+      callout: callout ?? this.callout,
+      caption: caption ?? this.caption,
     );
   }
 
   @override
-  ThemeExtension<CustomColors> lerp(
-      ThemeExtension<CustomColors>? other, double t) {
-    if (other is! CustomColors) {
+  ThemeExtension<AFThemeExtension> lerp(
+      ThemeExtension<AFThemeExtension>? other, double t) {
+    if (other is! AFThemeExtension) {
       return this;
     }
-    return CustomColors(
+    return AFThemeExtension(
       warning: Color.lerp(warning, other.warning, t),
       success: Color.lerp(success, other.success, t),
       greyHover: Color.lerp(greyHover, other.greyHover, t)!,
       greySelect: Color.lerp(greySelect, other.greySelect, t)!,
       lightGreyHover: Color.lerp(lightGreyHover, other.lightGreyHover, t)!,
       toggleOffFill: Color.lerp(toggleOffFill, other.toggleOffFill, t)!,
+      code: other.code,
+      callout: other.callout,
+      caption: other.caption,
     );
   }
 }

frontend/app_flowy/packages/flowy_infra/lib/size.dart

@@ -43,6 +43,14 @@ class FontSizes {
   static double get s16 => 16 * scale;
 
   static double get s18 => 18 * scale;
+
+  static double get s20 => 20 * scale;
+
+  static double get s24 => 24 * scale;
+
+  static double get s32 => 32 * scale;
+
+  static double get s44 => 44 * scale;
 }
 
 class Sizes {

frontend/app_flowy/packages/flowy_infra/lib/text_style.dart

@@ -1,6 +1,7 @@
 import 'package:flowy_infra/size.dart';
 import 'package:flutter/material.dart';
 
+// preserved until deprecation
 class Fonts {
   static String general = "Poppins";
 
@@ -10,6 +11,7 @@ class Fonts {
 }
 
 class TextStyles {
+  // preserved until deprecation
   static TextStyle general({
     double? fontSize,
     FontWeight fontWeight = FontWeight.w500,
@@ -70,4 +72,64 @@ class TextStyles {
         fontSize: FontSizes.s11,
         fontWeight: FontWeight.w400,
       );
+
+  final String font;
+  final Color color;
+
+  TextStyles({
+    required this.font,
+    required this.color,
+  });
+
+  TextStyle getFontStyle({
+    String? fontFamily,
+    double? fontSize,
+    FontWeight? fontWeight,
+    Color? fontColor,
+    double? letterSpacing,
+    double? lineHeight,
+  }) =>
+      TextStyle(
+        fontFamily: fontFamily ?? font,
+        fontSize: fontSize ?? FontSizes.s12,
+        color: fontColor ?? color,
+        fontWeight: fontWeight ?? FontWeight.w500,
+        fontFamilyFallback: const ["Noto Color Emoji"],
+        letterSpacing: (fontSize ?? FontSizes.s12) * (letterSpacing ?? 0.005),
+        height: lineHeight,
+      );
+
+  TextTheme generateTextTheme() {
+    return TextTheme(
+      displayLarge: getFontStyle(
+        fontSize: FontSizes.s32,
+        fontWeight: FontWeight.w600,
+        lineHeight: 42.0,
+      ), // h2
+      displayMedium: getFontStyle(
+        fontSize: FontSizes.s24,
+        fontWeight: FontWeight.w600,
+        lineHeight: 34.0,
+      ), // h3
+      displaySmall: getFontStyle(
+        fontSize: FontSizes.s20,
+        fontWeight: FontWeight.w600,
+        lineHeight: 28.0,
+      ), // h4
+      titleLarge: getFontStyle(
+        fontSize: FontSizes.s18,
+        fontWeight: FontWeight.w600,
+      ), // title
+      titleMedium: getFontStyle(
+        fontSize: FontSizes.s16,
+        fontWeight: FontWeight.w600,
+      ), // heading
+      titleSmall: getFontStyle(
+        fontSize: FontSizes.s14,
+        fontWeight: FontWeight.w600,
+      ), // subheading
+      bodyMedium: getFontStyle(), // body-regular
+      bodySmall: getFontStyle(fontWeight: FontWeight.w400), // body-thin
+    );
+  }
 }

frontend/app_flowy/packages/flowy_infra/lib/theme.dart

@@ -1,3 +1,5 @@
+import 'package:flowy_infra/size.dart';
+import 'package:flowy_infra/text_style.dart';
 import 'package:flutter/material.dart';
 
 import 'color_extension.dart';
@@ -19,7 +21,7 @@ String themeTypeToString(Brightness brightness) {
   }
 }
 
-// Color Pallettes
+// Color Palettes
 const _black = Color(0xff000000);
 const _white = Color(0xFFFFFFFF);
 
@@ -154,11 +156,10 @@ class AppTheme {
   }
 
   ThemeData get themeData {
+    final textTheme = TextStyles(font: font, color: shader1);
     return ThemeData(
       brightness: brightness,
-      textTheme: TextTheme(
-        bodyText2: TextStyle(color: shader1),
-      ),
+      textTheme: textTheme.generateTextTheme(),
       textSelectionTheme: TextSelectionThemeData(
           cursorColor: main2, selectionHandleColor: main2),
       primaryIconTheme: IconThemeData(color: hover),
@@ -195,13 +196,23 @@ class AppTheme {
         shadow: shadow,
       ),
       extensions: [
-        CustomColors(
+        AFThemeExtension(
           warning: yellow,
           success: green,
           greyHover: bg2,
           greySelect: bg3,
           lightGreyHover: shader6,
           toggleOffFill: shader5,
+          code: textTheme.getFontStyle(fontFamily: monospaceFont),
+          callout: textTheme.getFontStyle(
+            fontSize: FontSizes.s11,
+            fontColor: shader3,
+          ),
+          caption: textTheme.getFontStyle(
+            fontSize: FontSizes.s11,
+            fontWeight: FontWeight.w400,
+            fontColor: shader3,
+          ),
         )
       ],
     );

frontend/app_flowy/packages/flowy_infra_ui/lib/style_widget/scrolling/styled_scroll_bar.dart

@@ -138,13 +138,13 @@ class ScrollbarState extends State<StyledScrollbar> {
         // Handle color
         var handleColor = widget.handleColor ??
             (Theme.of(context).brightness == Brightness.dark
-                ? CustomColors.of(context).greyHover.withOpacity(.2)
-                : CustomColors.of(context).greyHover);
+                ? AFThemeExtension.of(context).greyHover.withOpacity(.2)
+                : AFThemeExtension.of(context).greyHover);
         // Track color
         var trackColor = widget.trackColor ??
             (Theme.of(context).brightness == Brightness.dark
-                ? CustomColors.of(context).greyHover.withOpacity(.1)
-                : CustomColors.of(context).greyHover.withOpacity(.3));
+                ? AFThemeExtension.of(context).greyHover.withOpacity(.1)
+                : AFThemeExtension.of(context).greyHover.withOpacity(.3));
 
         //Layout the stack, it just contains a child, and
         return Stack(children: <Widget>[