Add type hints for IPython _repr_* helpers

These are semi-public.

Author: QuLogic

lib/matplotlib/animation.pyi

@@ -183,6 +183,7 @@ class Animation:
         embed_frames: bool = ...,
         default_mode: str | None = ...,
     ) -> str: ...
+    def _repr_html_(self) -> str: ...
     def pause(self) -> None: ...
     def resume(self) -> None: ...
 

lib/matplotlib/colors.pyi

@@ -97,6 +97,8 @@ class Colormap:
     def is_gray(self) -> bool: ...
     def resampled(self, lutsize: int) -> Colormap: ...
     def reversed(self, name: str | None = ...) -> Colormap: ...
+    def _repr_html_(self) -> str: ...
+    def _repr_png_(self) -> bytes: ...
     def copy(self) -> Colormap: ...
 
 class LinearSegmentedColormap(Colormap):

lib/matplotlib/figure.pyi

@@ -315,6 +315,7 @@ class Figure(FigureBase):
         **kwargs
     ) -> None: ...
     def get_layout_engine(self) -> LayoutEngine | None: ...
+    def _repr_html_(self) -> str | None: ...
     def show(self, warn: bool = ...) -> None: ...
     @property  # type: ignore[misc]
     def axes(self) -> list[Axes]: ...  # type: ignore[override]

lib/matplotlib/font_manager.pyi

@@ -35,6 +35,8 @@ class FontEntry:
     weight: str | int = ...
     stretch: str = ...
     size: str = ...
+    def _repr_html_(self) -> str: ...
+    def _repr_png_(self) -> bytes: ...
 
 def ttfFontProperty(font: ft2font.FT2Font) -> FontEntry: ...
 def afmFontProperty(fontpath: str, font: AFM) -> FontEntry: ...