Refactor Font configuration and import UI, and Font resources.

1 files changed, 595 insertions, 0 deletions

diff --git a/doc/classes/FontFile.xml b/doc/classes/FontFile.xml
new file mode 100644
index 0000000000..98abc87b84
--- /dev/null
+++ b/doc/classes/FontFile.xml
@@ -0,0 +1,595 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<class name="FontFile" inherits="Font" version="4.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../class.xsd">
+	<brief_description>
+		FontFile source data and prerendered glyph cache, imported from dynamic or bitmap font.
+	</brief_description>
+	<description>
+		[FontFile] contains a set of glyphs to represent Unicode characters imported from a font file, as well as a cache of rasterized glyphs, and a set of fallback [Font]s to use.
+		Use [FontVariation] to access specific OpenType variation of the font, create simulated bold / slanted version, and draw lines of text.
+		For more complex text processing, use [FontVariation] in conjunction with [TextLine] or [TextParagraph].
+		Supported font formats:
+		- Dynamic font importer: TrueType (.ttf), TrueType collection (.ttc), OpenType (.otf), OpenType collection (.otc), WOFF (.woff), WOFF2 (.woff2), Type 1 (.pfb, .pfm).
+		- Bitmap font importer: AngelCode BMFont (.fnt, .font), text and binary (version 3) format variants.
+		- Monospace image font importer: All supported image formats.
+		[b]Note:[/b] A character is a symbol that represents an item (letter, digit etc.) in an abstract way.
+		[b]Note:[/b] A glyph is a bitmap or shape used to draw a one or more characters in a context-dependent manner. Glyph indices are bound to the specific font data source.
+		[b]Note:[/b] If a none of the font data sources contain glyphs for a character used in a string, the character in question will be replaced with a box displaying its hexadecimal code.
+
+		[codeblocks]
+		[gdscript]
+		var f = load("res://BarlowCondensed-Bold.ttf")
+		$"Label".set("custom_fonts/font", f)
+		$"Label".set("custom_fonts/font_size", 64)
+		[/gdscript]
+		[csharp]
+		var f = ResourceLoader.Load&lt;FontFile&gt;("res://BarlowCondensed-Bold.ttf");
+		GetNode("Label").Set("custom_fonts/font", f);
+		GetNode("Label").Set("custom_font_sizes/font_size", 64);
+		[/csharp]
+		[/codeblocks]
+	</description>
+	<tutorials>
+	</tutorials>
+	<methods>
+		<method name="clear_cache">
+			<return type="void" />
+			<description>
+				Removes all font cache entries.
+			</description>
+		</method>
+		<method name="clear_glyphs">
+			<return type="void" />
+			<argument index="0" name="cache_index" type="int" />
+			<argument index="1" name="size" type="Vector2i" />
+			<description>
+				Removes all rendered glyphs information from the cache entry.
+				[b]Note:[/b] This function will not remove textures associated with the glyphs, use [method remove_texture] to remove them manually.
+			</description>
+		</method>
+		<method name="clear_kerning_map">
+			<return type="void" />
+			<argument index="0" name="cache_index" type="int" />
+			<argument index="1" name="size" type="int" />
+			<description>
+				Removes all kerning overrides.
+			</description>
+		</method>
+		<method name="clear_size_cache">
+			<return type="void" />
+			<argument index="0" name="cache_index" type="int" />
+			<description>
+				Removes all font sizes from the cache entry
+			</description>
+		</method>
+		<method name="clear_textures">
+			<return type="void" />
+			<argument index="0" name="cache_index" type="int" />
+			<argument index="1" name="size" type="Vector2i" />
+			<description>
+				Removes all textures from font cache entry.
+				[b]Note:[/b] This function will not remove glyphs associated with the texture, use [method remove_glyph] to remove them manually.
+			</description>
+		</method>
+		<method name="get_cache_ascent" qualifiers="const">
+			<return type="float" />
+			<argument index="0" name="cache_index" type="int" />
+			<argument index="1" name="size" type="int" />
+			<description>
+				Returns the font ascent (number of pixels above the baseline).
+			</description>
+		</method>
+		<method name="get_cache_count" qualifiers="const">
+			<return type="int" />
+			<description>
+				Returns number of the font cache entries.
+			</description>
+		</method>
+		<method name="get_cache_descent" qualifiers="const">
+			<return type="float" />
+			<argument index="0" name="cache_index" type="int" />
+			<argument index="1" name="size" type="int" />
+			<description>
+			</description>
+		</method>
+		<method name="get_cache_scale" qualifiers="const">
+			<return type="float" />
+			<argument index="0" name="cache_index" type="int" />
+			<argument index="1" name="size" type="int" />
+			<description>
+			</description>
+		</method>
+		<method name="get_cache_underline_position" qualifiers="const">
+			<return type="float" />
+			<argument index="0" name="cache_index" type="int" />
+			<argument index="1" name="size" type="int" />
+			<description>
+			</description>
+		</method>
+		<method name="get_cache_underline_thickness" qualifiers="const">
+			<return type="float" />
+			<argument index="0" name="cache_index" type="int" />
+			<argument index="1" name="size" type="int" />
+			<description>
+			</description>
+		</method>
+		<method name="get_embolden" qualifiers="const">
+			<return type="float" />
+			<argument index="0" name="cache_index" type="int" />
+			<description>
+				Returns embolden strength, if is not equal to zero, emboldens the font outlines. Negative values reduce the outline thickness.
+			</description>
+		</method>
+		<method name="get_face_index" qualifiers="const">
+			<return type="int" />
+			<argument index="0" name="cache_index" type="int" />
+			<description>
+				Recturns an active face index in the TrueType / OpenType collection.
+			</description>
+		</method>
+		<method name="get_glyph_advance" qualifiers="const">
+			<return type="Vector2" />
+			<argument index="0" name="cache_index" type="int" />
+			<argument index="1" name="size" type="int" />
+			<argument index="2" name="glyph" type="int" />
+			<description>
+				Returns glyph advance (offset of the next glyph).
+				[b]Note:[/b] Advance for glyphs outlines is the same as the base glyph advance and is not saved.
+			</description>
+		</method>
+		<method name="get_glyph_index" qualifiers="const">
+			<return type="int" />
+			<argument index="0" name="size" type="int" />
+			<argument index="1" name="char" type="int" />
+			<argument index="2" name="variation_selector" type="int" />
+			<description>
+				Returns the glyph index of a [code]char[/code], optionally modified by the [code]variation_selector[/code].
+			</description>
+		</method>
+		<method name="get_glyph_list" qualifiers="const">
+			<return type="Array" />
+			<argument index="0" name="cache_index" type="int" />
+			<argument index="1" name="size" type="Vector2i" />
+			<description>
+				Returns list of rendered glyphs in the cache entry.
+			</description>
+		</method>
+		<method name="get_glyph_offset" qualifiers="const">
+			<return type="Vector2" />
+			<argument index="0" name="cache_index" type="int" />
+			<argument index="1" name="size" type="Vector2i" />
+			<argument index="2" name="glyph" type="int" />
+			<description>
+				Returns glyph offset from the baseline.
+			</description>
+		</method>
+		<method name="get_glyph_size" qualifiers="const">
+			<return type="Vector2" />
+			<argument index="0" name="cache_index" type="int" />
+			<argument index="1" name="size" type="Vector2i" />
+			<argument index="2" name="glyph" type="int" />
+			<description>
+				Returns glyph size.
+			</description>
+		</method>
+		<method name="get_glyph_texture_idx" qualifiers="const">
+			<return type="int" />
+			<argument index="0" name="cache_index" type="int" />
+			<argument index="1" name="size" type="Vector2i" />
+			<argument index="2" name="glyph" type="int" />
+			<description>
+				Returns index of the cache texture containing the glyph.
+			</description>
+		</method>
+		<method name="get_glyph_uv_rect" qualifiers="const">
+			<return type="Rect2" />
+			<argument index="0" name="cache_index" type="int" />
+			<argument index="1" name="size" type="Vector2i" />
+			<argument index="2" name="glyph" type="int" />
+			<description>
+				Returns rectangle in the cache texture containing the glyph.
+			</description>
+		</method>
+		<method name="get_kerning" qualifiers="const">
+			<return type="Vector2" />
+			<argument index="0" name="cache_index" type="int" />
+			<argument index="1" name="size" type="int" />
+			<argument index="2" name="glyph_pair" type="Vector2i" />
+			<description>
+				Returns kerning for the pair of glyphs.
+			</description>
+		</method>
+		<method name="get_kerning_list" qualifiers="const">
+			<return type="Array" />
+			<argument index="0" name="cache_index" type="int" />
+			<argument index="1" name="size" type="int" />
+			<description>
+				Returns list of the kerning overrides.
+			</description>
+		</method>
+		<method name="get_language_support_override" qualifiers="const">
+			<return type="bool" />
+			<argument index="0" name="language" type="String" />
+			<description>
+				Returns [code]true[/code] if support override is enabled for the [code]language[/code].
+			</description>
+		</method>
+		<method name="get_language_support_overrides" qualifiers="const">
+			<return type="PackedStringArray" />
+			<description>
+				Returns list of language support overrides.
+			</description>
+		</method>
+		<method name="get_script_support_override" qualifiers="const">
+			<return type="bool" />
+			<argument index="0" name="script" type="String" />
+			<description>
+				Returns [code]true[/code] if support override is enabled for the [code]script[/code].
+			</description>
+		</method>
+		<method name="get_script_support_overrides" qualifiers="const">
+			<return type="PackedStringArray" />
+			<description>
+				Returns list of script support overrides.
+			</description>
+		</method>
+		<method name="get_size_cache_list" qualifiers="const">
+			<return type="Array" />
+			<argument index="0" name="cache_index" type="int" />
+			<description>
+				Returns list of the font sizes in the cache. Each size is [code]Vector2i[/code] with font size and outline size.
+			</description>
+		</method>
+		<method name="get_texture_count" qualifiers="const">
+			<return type="int" />
+			<argument index="0" name="cache_index" type="int" />
+			<argument index="1" name="size" type="Vector2i" />
+			<description>
+				Returns number of textures used by font cache entry.
+			</description>
+		</method>
+		<method name="get_texture_image" qualifiers="const">
+			<return type="Image" />
+			<argument index="0" name="cache_index" type="int" />
+			<argument index="1" name="size" type="Vector2i" />
+			<argument index="2" name="texture_index" type="int" />
+			<description>
+				Returns a copy of the font cache texture image.
+			</description>
+		</method>
+		<method name="get_texture_offsets" qualifiers="const">
+			<return type="PackedInt32Array" />
+			<argument index="0" name="cache_index" type="int" />
+			<argument index="1" name="size" type="Vector2i" />
+			<argument index="2" name="texture_index" type="int" />
+			<description>
+				Returns a copy of the array containing the first free pixel in the each column of texture. Should be the same size as texture width or empty.
+			</description>
+		</method>
+		<method name="get_transform" qualifiers="const">
+			<return type="Transform2D" />
+			<argument index="0" name="cache_index" type="int" />
+			<description>
+				Returns 2D transform, applied to the font outlines, can be used for slanting, flipping and rotating glyphs.
+			</description>
+		</method>
+		<method name="get_variation_coordinates" qualifiers="const">
+			<return type="Dictionary" />
+			<argument index="0" name="cache_index" type="int" />
+			<description>
+				Returns variation coordinates for the specified font cache entry. See [method Font.get_supported_variation_list] for more info.
+			</description>
+		</method>
+		<method name="load_bitmap_font">
+			<return type="int" enum="Error" />
+			<argument index="0" name="path" type="String" />
+			<description>
+				Loads an AngelCode BMFont (.fnt, .font) bitmap font from file [code]path[/code].
+				[b]Warning:[/b] This method should only be used in the editor or in cases when you need to load external fonts at run-time, such as fonts located at the [code]user://[/code] directory.
+			</description>
+		</method>
+		<method name="load_dynamic_font">
+			<return type="int" enum="Error" />
+			<argument index="0" name="path" type="String" />
+			<description>
+				Loads a TrueType (.ttf), OpenType (.otf), WOFF (.woff), WOFF2 (.woff2) or Type 1 (.pfb, .pfm) dynamic font from file [code]path[/code].
+				[b]Warning:[/b] This method should only be used in the editor or in cases when you need to load external fonts at run-time, such as fonts located at the [code]user://[/code] directory.
+			</description>
+		</method>
+		<method name="remove_cache">
+			<return type="void" />
+			<argument index="0" name="cache_index" type="int" />
+			<description>
+				Removes specified font cache entry.
+			</description>
+		</method>
+		<method name="remove_glyph">
+			<return type="void" />
+			<argument index="0" name="cache_index" type="int" />
+			<argument index="1" name="size" type="Vector2i" />
+			<argument index="2" name="glyph" type="int" />
+			<description>
+				Removes specified rendered glyph information from the cache entry.
+				[b]Note:[/b] This function will not remove textures associated with the glyphs, use [method remove_texture] to remove them manually.
+			</description>
+		</method>
+		<method name="remove_kerning">
+			<return type="void" />
+			<argument index="0" name="cache_index" type="int" />
+			<argument index="1" name="size" type="int" />
+			<argument index="2" name="glyph_pair" type="Vector2i" />
+			<description>
+				Removes kerning override for the pair of glyphs.
+			</description>
+		</method>
+		<method name="remove_language_support_override">
+			<return type="void" />
+			<argument index="0" name="language" type="String" />
+			<description>
+				Remove language support override.
+			</description>
+		</method>
+		<method name="remove_script_support_override">
+			<return type="void" />
+			<argument index="0" name="script" type="String" />
+			<description>
+				Removes script support override.
+			</description>
+		</method>
+		<method name="remove_size_cache">
+			<return type="void" />
+			<argument index="0" name="cache_index" type="int" />
+			<argument index="1" name="size" type="Vector2i" />
+			<description>
+				Removes specified font size from the cache entry.
+			</description>
+		</method>
+		<method name="remove_texture">
+			<return type="void" />
+			<argument index="0" name="cache_index" type="int" />
+			<argument index="1" name="size" type="Vector2i" />
+			<argument index="2" name="texture_index" type="int" />
+			<description>
+				Removes specified texture from the cache entry.
+				[b]Note:[/b] This function will not remove glyphs associated with the texture. Remove them manually using [method remove_glyph].
+			</description>
+		</method>
+		<method name="render_glyph">
+			<return type="void" />
+			<argument index="0" name="cache_index" type="int" />
+			<argument index="1" name="size" type="Vector2i" />
+			<argument index="2" name="index" type="int" />
+			<description>
+				Renders specified glyph to the font cache texture.
+			</description>
+		</method>
+		<method name="render_range">
+			<return type="void" />
+			<argument index="0" name="cache_index" type="int" />
+			<argument index="1" name="size" type="Vector2i" />
+			<argument index="2" name="start" type="int" />
+			<argument index="3" name="end" type="int" />
+			<description>
+				Renders the range of characters to the font cache texture.
+			</description>
+		</method>
+		<method name="set_cache_ascent">
+			<return type="void" />
+			<argument index="0" name="cache_index" type="int" />
+			<argument index="1" name="size" type="int" />
+			<argument index="2" name="ascent" type="float" />
+			<description>
+			</description>
+		</method>
+		<method name="set_cache_descent">
+			<return type="void" />
+			<argument index="0" name="cache_index" type="int" />
+			<argument index="1" name="size" type="int" />
+			<argument index="2" name="descent" type="float" />
+			<description>
+			</description>
+		</method>
+		<method name="set_cache_scale">
+			<return type="void" />
+			<argument index="0" name="cache_index" type="int" />
+			<argument index="1" name="size" type="int" />
+			<argument index="2" name="scale" type="float" />
+			<description>
+			</description>
+		</method>
+		<method name="set_cache_underline_position">
+			<return type="void" />
+			<argument index="0" name="cache_index" type="int" />
+			<argument index="1" name="size" type="int" />
+			<argument index="2" name="underline_position" type="float" />
+			<description>
+			</description>
+		</method>
+		<method name="set_cache_underline_thickness">
+			<return type="void" />
+			<argument index="0" name="cache_index" type="int" />
+			<argument index="1" name="size" type="int" />
+			<argument index="2" name="underline_thickness" type="float" />
+			<description>
+			</description>
+		</method>
+		<method name="set_embolden">
+			<return type="void" />
+			<argument index="0" name="cache_index" type="int" />
+			<argument index="1" name="strength" type="float" />
+			<description>
+				Sets embolden strength, if is not equal to zero, emboldens the font outlines. Negative values reduce the outline thickness.
+			</description>
+		</method>
+		<method name="set_face_index">
+			<return type="void" />
+			<argument index="0" name="cache_index" type="int" />
+			<argument index="1" name="face_index" type="int" />
+			<description>
+				Sets an active face index in the TrueType / OpenType collection.
+			</description>
+		</method>
+		<method name="set_glyph_advance">
+			<return type="void" />
+			<argument index="0" name="cache_index" type="int" />
+			<argument index="1" name="size" type="int" />
+			<argument index="2" name="glyph" type="int" />
+			<argument index="3" name="advance" type="Vector2" />
+			<description>
+				Sets glyph advance (offset of the next glyph).
+				[b]Note:[/b] Advance for glyphs outlines is the same as the base glyph advance and is not saved.
+			</description>
+		</method>
+		<method name="set_glyph_offset">
+			<return type="void" />
+			<argument index="0" name="cache_index" type="int" />
+			<argument index="1" name="size" type="Vector2i" />
+			<argument index="2" name="glyph" type="int" />
+			<argument index="3" name="offset" type="Vector2" />
+			<description>
+				Sets glyph offset from the baseline.
+			</description>
+		</method>
+		<method name="set_glyph_size">
+			<return type="void" />
+			<argument index="0" name="cache_index" type="int" />
+			<argument index="1" name="size" type="Vector2i" />
+			<argument index="2" name="glyph" type="int" />
+			<argument index="3" name="gl_size" type="Vector2" />
+			<description>
+				Sets glyph size.
+			</description>
+		</method>
+		<method name="set_glyph_texture_idx">
+			<return type="void" />
+			<argument index="0" name="cache_index" type="int" />
+			<argument index="1" name="size" type="Vector2i" />
+			<argument index="2" name="glyph" type="int" />
+			<argument index="3" name="texture_idx" type="int" />
+			<description>
+				Sets index of the cache texture containing the glyph.
+			</description>
+		</method>
+		<method name="set_glyph_uv_rect">
+			<return type="void" />
+			<argument index="0" name="cache_index" type="int" />
+			<argument index="1" name="size" type="Vector2i" />
+			<argument index="2" name="glyph" type="int" />
+			<argument index="3" name="uv_rect" type="Rect2" />
+			<description>
+				Sets rectangle in the cache texture containing the glyph.
+			</description>
+		</method>
+		<method name="set_kerning">
+			<return type="void" />
+			<argument index="0" name="cache_index" type="int" />
+			<argument index="1" name="size" type="int" />
+			<argument index="2" name="glyph_pair" type="Vector2i" />
+			<argument index="3" name="kerning" type="Vector2" />
+			<description>
+				Sets kerning for the pair of glyphs.
+			</description>
+		</method>
+		<method name="set_language_support_override">
+			<return type="void" />
+			<argument index="0" name="language" type="String" />
+			<argument index="1" name="supported" type="bool" />
+			<description>
+				Adds override for [method Font.is_language_supported].
+			</description>
+		</method>
+		<method name="set_script_support_override">
+			<return type="void" />
+			<argument index="0" name="script" type="String" />
+			<argument index="1" name="supported" type="bool" />
+			<description>
+				Adds override for [method Font.is_script_supported].
+			</description>
+		</method>
+		<method name="set_texture_image">
+			<return type="void" />
+			<argument index="0" name="cache_index" type="int" />
+			<argument index="1" name="size" type="Vector2i" />
+			<argument index="2" name="texture_index" type="int" />
+			<argument index="3" name="image" type="Image" />
+			<description>
+				Sets font cache texture image.
+			</description>
+		</method>
+		<method name="set_texture_offsets">
+			<return type="void" />
+			<argument index="0" name="cache_index" type="int" />
+			<argument index="1" name="size" type="Vector2i" />
+			<argument index="2" name="texture_index" type="int" />
+			<argument index="3" name="offset" type="PackedInt32Array" />
+			<description>
+				Sets array containing the first free pixel in the each column of texture. Should be the same size as texture width or empty (for the fonts without dynamic glyph generation support).
+			</description>
+		</method>
+		<method name="set_transform">
+			<return type="void" />
+			<argument index="0" name="cache_index" type="int" />
+			<argument index="1" name="transform" type="Transform2D" />
+			<description>
+				Sets 2D transform, applied to the font outlines, can be used for slanting, flipping and rotating glyphs.
+			</description>
+		</method>
+		<method name="set_variation_coordinates">
+			<return type="void" />
+			<argument index="0" name="cache_index" type="int" />
+			<argument index="1" name="variation_coordinates" type="Dictionary" />
+			<description>
+				Sets variation coordinates for the specified font cache entry. See [method Font.get_supported_variation_list] for more info.
+			</description>
+		</method>
+	</methods>
+	<members>
+		<member name="antialiased" type="bool" setter="set_antialiased" getter="is_antialiased" default="true">
+			If set to [code]true[/code], font 8-bit anitialiased glyph rendering is supported and enabled.
+		</member>
+		<member name="data" type="PackedByteArray" setter="set_data" getter="get_data" default="PackedByteArray()">
+			Contents of the dynamic font source file.
+		</member>
+		<member name="fallbacks" type="Font[]" setter="set_fallbacks" getter="get_fallbacks" default="[]">
+			Array of fallback [Font]s.
+		</member>
+		<member name="fixed_size" type="int" setter="set_fixed_size" getter="get_fixed_size" default="0">
+			Font size, used only for the bitmap fonts.
+		</member>
+		<member name="font_name" type="String" setter="set_font_name" getter="get_font_name" default="&quot;&quot;">
+			Font family name.
+		</member>
+		<member name="font_style" type="int" setter="set_font_style" getter="get_font_style" default="0">
+			Font style flags, see [enum TextServer.FontStyle].
+		</member>
+		<member name="force_autohinter" type="bool" setter="set_force_autohinter" getter="is_force_autohinter" default="false">
+			If set to [code]true[/code], auto-hinting is supported and preferred over font built-in hinting. Used by dynamic fonts only.
+		</member>
+		<member name="generate_mipmaps" type="bool" setter="set_generate_mipmaps" getter="get_generate_mipmaps" default="false">
+			If set to [code]true[/code], generate mipmaps for the font textures.
+		</member>
+		<member name="hinting" type="int" setter="set_hinting" getter="get_hinting" enum="TextServer.Hinting" default="1">
+			Font hinting mode. Used by dynamic fonts only.
+		</member>
+		<member name="msdf_pixel_range" type="int" setter="set_msdf_pixel_range" getter="get_msdf_pixel_range" default="16">
+			The width of the range around the shape between the minimum and maximum representable signed distance.
+		</member>
+		<member name="msdf_size" type="int" setter="set_msdf_size" getter="get_msdf_size" default="48">
+			Source font size used to generate MSDF textures.
+		</member>
+		<member name="multichannel_signed_distance_field" type="bool" setter="set_multichannel_signed_distance_field" getter="is_multichannel_signed_distance_field" default="false">
+			If set to [code]true[/code], glyphs of all sizes are rendered using single multichannel signed distance field generated from the dynamic font vector data.
+		</member>
+		<member name="opentype_feature_overrides" type="Dictionary" setter="set_opentype_feature_overrides" getter="get_opentype_feature_overrides" default="{}">
+			Font OpenType feature set override.
+		</member>
+		<member name="oversampling" type="float" setter="set_oversampling" getter="get_oversampling" default="0.0">
+			Font oversampling factor, if set to [code]0.0[/code] global oversampling factor is used instead. Used by dynamic fonts only.
+		</member>
+		<member name="style_name" type="String" setter="set_font_style_name" getter="get_font_style_name" default="&quot;&quot;">
+			Font style name.
+		</member>
+		<member name="subpixel_positioning" type="int" setter="set_subpixel_positioning" getter="get_subpixel_positioning" enum="TextServer.SubpixelPositioning" default="1">
+			Font glyph sub-pixel positioning mode. Subpixel positioning provides shaper text and better kerning for smaller font sizes, at the cost of memory usage and font rasterization speed. Use [constant TextServer.SUBPIXEL_POSITIONING_AUTO] to automatically enable it based on the font size.
+		</member>
+	</members>
+</class>