Font

继承： Resource < RefCounted < Object

派生： FontFile, FontVariation, SystemFont

Abstract base class for fonts and font variations.

描述

Abstract base class for different font types. It has methods for drawing text and font character introspection.

属性

方法

属性说明

Array Font fallbacks = []

• void set_fallbacks ( value: Array Font )
• Array Font get_fallbacks ( )

Array of fallback Font s to use as a substitute if a glyph is not found in this current Font.

If this array is empty in a FontVariation, the FontVariation.base_font's fallbacks are used instead.

方法说明

float draw_char ( canvas_item: RID, pos: Vector2, char: int, font_size: int, modulate: Color = Color(1, 1, 1, 1) ) const¹

Draw a single Unicode character char into a canvas item using the font, at a given position, with modulate color. pos specifies the baseline, not the top. To draw from the top, ascent must be added to the Y axis.

Note: Do not use this function to draw strings character by character, use draw_string or TextLine instead.

float draw_char_outline ( canvas_item: RID, pos: Vector2, char: int, font_size: int, size: int = -1, modulate: Color = Color(1, 1, 1, 1) ) const¹

Draw a single Unicode character char outline into a canvas item using the font, at a given position, with modulate color and size outline size. pos specifies the baseline, not the top. To draw from the top, ascent must be added to the Y axis.

Note: Do not use this function to draw strings character by character, use draw_string or TextLine instead.

void draw_multiline_string ( canvas_item: RID, pos: Vector2, text: String, alignment: HorizontalAlignment = 0, width: float = -1, font_size: int = 16, max_lines: int = -1, modulate: Color = Color(1, 1, 1, 1), brk_flags: LineBreakFlag = 3, justification_flags: JustificationFlag = 3, direction: Direction = 0, orientation: Orientation = 0 ) const¹

Breaks text into lines using rules specified by brk_flags and draws it into a canvas item using the font, at a given position, with modulate color, optionally clipping the width and aligning horizontally. pos specifies the baseline of the first line, not the top. To draw from the top, ascent must be added to the Y axis.

See also CanvasItem.draw_multiline_string.

void draw_multiline_string_outline ( canvas_item: RID, pos: Vector2, text: String, alignment: HorizontalAlignment = 0, width: float = -1, font_size: int = 16, max_lines: int = -1, size: int = 1, modulate: Color = Color(1, 1, 1, 1), brk_flags: LineBreakFlag = 3, justification_flags: JustificationFlag = 3, direction: Direction = 0, orientation: Orientation = 0 ) const¹

Breaks text to the lines using rules specified by brk_flags and draws text outline into a canvas item using the font, at a given position, with modulate color and size outline size, optionally clipping the width and aligning horizontally. pos specifies the baseline of the first line, not the top. To draw from the top, ascent must be added to the Y axis.

See also CanvasItem.draw_multiline_string_outline.

void draw_string ( canvas_item: RID, pos: Vector2, text: String, alignment: HorizontalAlignment = 0, width: float = -1, font_size: int = 16, modulate: Color = Color(1, 1, 1, 1), justification_flags: JustificationFlag = 3, direction: Direction = 0, orientation: Orientation = 0 ) const¹

Draw text into a canvas item using the font, at a given position, with modulate color, optionally clipping the width and aligning horizontally. pos specifies the baseline, not the top. To draw from the top, ascent must be added to the Y axis.

See also CanvasItem.draw_string.

void draw_string_outline ( canvas_item: RID, pos: Vector2, text: String, alignment: HorizontalAlignment = 0, width: float = -1, font_size: int = 16, size: int = 1, modulate: Color = Color(1, 1, 1, 1), justification_flags: JustificationFlag = 3, direction: Direction = 0, orientation: Orientation = 0 ) const¹

Draw text outline into a canvas item using the font, at a given position, with modulate color and size outline size, optionally clipping the width and aligning horizontally. pos specifies the baseline, not the top. To draw from the top, ascent must be added to the Y axis.

See also CanvasItem.draw_string_outline.

RID find_variation ( variation_coordinates: Dictionary, face_index: int = 0, strength: float = 0.0, transform: Transform2D = Transform2D(1, 0, 0, 1, 0, 0), spacing_top: int = 0, spacing_bottom: int = 0, spacing_space: int = 0, spacing_glyph: int = 0, baseline_offset: float = 0.0 ) const¹

Returns TextServer RID of the font cache for specific variation.

float get_ascent ( font_size: int = 16 ) const¹

Returns the average font ascent (number of pixels above the baseline).

Note: Real ascent of the string is context-dependent and can be significantly different from the value returned by this function. Use it only as rough estimate (e.g. as the ascent of empty line).

Vector2 get_char_size ( char: int, font_size: int ) const¹

Returns the size of a character. Does not take kerning into account.

Note: Do not use this function to calculate width of the string character by character, use get_string_size or TextLine instead. The height returned is the font height (see also get_height) and has no relation to the glyph height.

float get_descent ( font_size: int = 16 ) const¹

Returns the average font descent (number of pixels below the baseline).

Note: Real descent of the string is context-dependent and can be significantly different from the value returned by this function. Use it only as rough estimate (e.g. as the descent of empty line).

int get_face_count ( ) const¹

Returns number of faces in the TrueType / OpenType collection.

String get_font_name ( ) const¹

Returns font family name.

int get_font_stretch ( ) const¹

Returns font stretch amount, compared to a normal width. A percentage value between 50% and 200%.

FontStyle get_font_style ( ) const¹

Returns font style flags, see FontStyle.

String get_font_style_name ( ) const¹

Returns font style name.

int get_font_weight ( ) const¹

Returns weight (boldness) of the font. A value in the 100...999 range, normal font weight is 400, bold font weight is 700.

float get_height ( font_size: int = 16 ) const¹

Returns the total average font height (ascent plus descent) in pixels.

Note: Real height of the string is context-dependent and can be significantly different from the value returned by this function. Use it only as rough estimate (e.g. as the height of empty line).

Vector2 get_multiline_string_size ( text: String, alignment: HorizontalAlignment = 0, width: float = -1, font_size: int = 16, max_lines: int = -1, brk_flags: LineBreakFlag = 3, justification_flags: JustificationFlag = 3, direction: Direction = 0, orientation: Orientation = 0 ) const¹

Returns the size of a bounding box of a string broken into the lines, taking kerning and advance into account.

See also draw_multiline_string.

Dictionary get_opentype_features ( ) const¹

Returns a set of OpenType feature tags. More info: OpenType feature tags.

Dictionary get_ot_name_strings ( ) const¹

Returns Dictionary with OpenType font name strings (localized font names, version, description, license information, sample text, etc.).

Array RID get_rids ( ) const¹

Returns Array of valid Font RID s, which can be passed to the TextServer methods.

int get_spacing ( spacing: SpacingType ) const¹

Returns the spacing for the given type (see SpacingType).

Vector2 get_string_size ( text: String, alignment: HorizontalAlignment = 0, width: float = -1, font_size: int = 16, justification_flags: JustificationFlag = 3, direction: Direction = 0, orientation: Orientation = 0 ) const¹

Returns the size of a bounding box of a single-line string, taking kerning, advance and subpixel positioning into account. See also get_multiline_string_size and draw_string.

For example, to get the string size as displayed by a single-line Label, use:

    var string_size = $Label.get_theme_font("font").get_string_size($Label.text, HORIZONTAL_ALIGNMENT_LEFT, -1, $Label.get_theme_font_size("font_size"))

    Label label = GetNode<Label>("Label");
    Vector2 stringSize = label.GetThemeFont("font").GetStringSize(label.Text, HorizontalAlignment.Left, -1, label.GetThemeFontSize("font_size"));

Note: Since kerning, advance and subpixel positioning are taken into account by get_string_size, using separate get_string_size calls on substrings of a string then adding the results together will return a different result compared to using a single get_string_size call on the full string.

Note: Real height of the string is context-dependent and can be significantly different from the value returned by get_height.

String get_supported_chars ( ) const¹

Returns a string containing all the characters available in the font.

If a given character is included in more than one font data source, it appears only once in the returned string.

Dictionary get_supported_feature_list ( ) const¹

Returns list of OpenType features supported by font.

Dictionary get_supported_variation_list ( ) const¹

Returns list of supported variation coordinates, each coordinate is returned as tag: Vector3i(min_value,max_value,default_value).

Font variations allow for continuous change of glyph characteristics along some given design axis, such as weight, width or slant.

To print available variation axes of a variable font:

    var fv = FontVariation.new()
    fv.base_font = load("res://RobotoFlex.ttf")
    var variation_list = fv.get_supported_variation_list()
    for tag in variation_list:
        var name = TextServerManager.get_primary_interface().tag_to_name(tag)
        var values = variation_list[tag]
        print("variation axis: %s (%d)\n\tmin, max, default: %s" % [name, tag, values])

Note: To set and get variation coordinates of a FontVariation, use FontVariation.variation_opentype.

float get_underline_position ( font_size: int = 16 ) const¹

Returns average pixel offset of the underline below the baseline.

Note: Real underline position of the string is context-dependent and can be significantly different from the value returned by this function. Use it only as rough estimate.

float get_underline_thickness ( font_size: int = 16 ) const¹

Returns average thickness of the underline.

Note: Real underline thickness of the string is context-dependent and can be significantly different from the value returned by this function. Use it only as rough estimate.

bool has_char ( char: int ) const¹

Returns true if a Unicode char is available in the font.

bool is_language_supported ( language: String ) const¹

Returns true, if font supports given language (ISO 639 code).

bool is_script_supported ( script: String ) const¹

Returns true, if font supports given script (ISO 15924 code).

void set_cache_capacity ( single_line: int, multi_line: int )

Sets LRU cache capacity for draw_* methods.