Add options to embolden and transform font outlines to simulate bold and italic typefaces.

3 files changed, 69 insertions, 0 deletions

diff --git a/doc/classes/FontData.xml b/doc/classes/FontData.xml
index ccaefc60ee..9344a1fe80 100644
--- a/doc/classes/FontData.xml
+++ b/doc/classes/FontData.xml
@@ -567,6 +567,9 @@
 		<member name="data" type="PackedByteArray" setter="set_data" getter="get_data" default="PackedByteArray()">
 			Contents of the dynamic font source file.
 		</member>
+		<member name="embolden" type="float" setter="set_embolden" getter="get_embolden" default="0.0">
+			If is not equal to zero, emboldens the font outlines. Negative values reduce the outline thickness.
+		</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>
@@ -603,5 +606,9 @@
 		<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>
+		<member name="transform" type="Transform2D" setter="set_transform" getter="get_transform" default="Transform2D(1, 0, 0, 1, 0, 0)">
+			2D transform, applied to the font outlines, can be used for slanting, flipping and rotating glyphs.
+			For example, to simulate italic typeface by slanting, apply the following transform [code]Transform2D(1.0, slant, 0.0, 1.0, 0.0, 0.0)[/code].
+		</member>
 	</members>
 </class>
diff --git a/doc/classes/TextServer.xml b/doc/classes/TextServer.xml
index 3157eea436..020c30b9cd 100644
--- a/doc/classes/TextServer.xml
+++ b/doc/classes/TextServer.xml
@@ -112,6 +112,13 @@
 				Returns the font descent (number of pixels below the baseline).
 			</description>
 		</method>
+		<method name="font_get_embolden" qualifiers="const">
+			<return type="float" />
+			<argument index="0" name="font_rid" type="RID" />
+			<description>
+				Returns font embolden strength.
+			</description>
+		</method>
 		<method name="font_get_fixed_size" qualifiers="const">
 			<return type="int" />
 			<argument index="0" name="font_rid" type="RID" />
@@ -368,6 +375,13 @@
 				Returns 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="font_get_transform" qualifiers="const">
+			<return type="Transform2D" />
+			<argument index="0" name="font_rid" type="RID" />
+			<description>
+				Returns 2D transform applied to the font outlines.
+			</description>
+		</method>
 		<method name="font_get_underline_position" qualifiers="const">
 			<return type="float" />
 			<argument index="0" name="font_rid" type="RID" />
@@ -542,6 +556,14 @@
 				Sets the font descent (number of pixels below the baseline).
 			</description>
 		</method>
+		<method name="font_set_embolden">
+			<return type="void" />
+			<argument index="0" name="font_rid" type="RID" />
+			<argument index="1" name="strength" type="float" />
+			<description>
+				Sets font embolden strength. If [code]strength[/code] is not equal to zero, emboldens the font outlines. Negative values reduce the outline thickness.
+			</description>
+		</method>
 		<method name="font_set_fixed_size">
 			<return type="void" />
 			<argument index="0" name="font_rid" type="RID" />
@@ -765,6 +787,15 @@
 				Sets 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="font_set_transform">
+			<return type="void" />
+			<argument index="0" name="font_rid" type="RID" />
+			<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.
+				For example, to simulate italic typeface by slanting, apply the following transform [code]Transform2D(1.0, slant, 0.0, 1.0, 0.0, 0.0)[/code].
+			</description>
+		</method>
 		<method name="font_set_underline_position">
 			<return type="void" />
 			<argument index="0" name="font_rid" type="RID" />
diff --git a/doc/classes/TextServerExtension.xml b/doc/classes/TextServerExtension.xml
index f730f28e79..5ffd80bf63 100644
--- a/doc/classes/TextServerExtension.xml
+++ b/doc/classes/TextServerExtension.xml
@@ -112,6 +112,13 @@
 				Returns the font descent (number of pixels below the baseline).
 			</description>
 		</method>
+		<method name="_font_get_embolden" qualifiers="virtual const">
+			<return type="float" />
+			<argument index="0" name="font_rid" type="RID" />
+			<description>
+				Returns font embolden strength.
+			</description>
+		</method>
 		<method name="_font_get_fixed_size" qualifiers="virtual const">
 			<return type="int" />
 			<argument index="0" name="font_rid" type="RID" />
@@ -368,6 +375,13 @@
 				Returns 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="_font_get_transform" qualifiers="virtual const">
+			<return type="Transform2D" />
+			<argument index="0" name="font_rid" type="RID" />
+			<description>
+				Retruns 2D transform applied to the font outlines.
+			</description>
+		</method>
 		<method name="_font_get_underline_position" qualifiers="virtual const">
 			<return type="float" />
 			<argument index="0" name="font_rid" type="RID" />
@@ -551,6 +565,14 @@
 				Sets bitmap font fixed size. If set to value greater than zero, same cache entry will be used for all font sizes.
 			</description>
 		</method>
+		<method name="_font_set_embolden" qualifiers="virtual">
+			<return type="void" />
+			<argument index="0" name="font_rid" type="RID" />
+			<argument index="1" name="strength" type="float" />
+			<description>
+				Sets font embolden strength. If [code]strength[/code] is not equal to zero, emboldens the font outlines. Negative values reduce the outline thickness.
+			</description>
+		</method>
 		<method name="_font_set_fixed_size" qualifiers="virtual">
 			<return type="void" />
 			<argument index="0" name="font_rid" type="RID" />
@@ -773,6 +795,15 @@
 				Sets 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="_font_set_transform" qualifiers="virtual">
+			<return type="void" />
+			<argument index="0" name="font_rid" type="RID" />
+			<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.
+				For example, to simulate italic typeface by slanting, apply the following transform [code]Transform2D(1.0, slant, 0.0, 1.0, 0.0, 0.0)[/code].
+			</description>
+		</method>
 		<method name="_font_set_underline_position" qualifiers="virtual">
 			<return type="void" />
 			<argument index="0" name="font_rid" type="RID" />