matplotlib · QuLogic · Oct 17, 2022 · Oct 8, 2022
diff --git a/doc/api/next_api_changes/removals/24129-OG.rst b/doc/api/next_api_changes/removals/24129-OG.rst
@@ -0,0 +1,33 @@
+Interactive cursor details
+~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Setting a mouse cursor on a window has been moved from the toolbar to the
+canvas. Consequently, several implementation details on toolbars and within
+backends have been removed.
+
+``NavigationToolbar2.set_cursor`` and ``backend_tools.SetCursorBase.set_cursor``
+................................................................................
+
+Instead, use the `.FigureCanvasBase.set_cursor` method on the canvas (available
+as the ``canvas`` attribute on the toolbar or the Figure.)
+
+``backend_tools.SetCursorBase`` and subclasses
+..............................................
+
+``backend_tools.SetCursorBase`` was subclassed to provide backend-specific
+implementations of ``set_cursor``. As that is now removed, the subclassing
+is no longer necessary. Consequently, the following subclasses are also
+removed:
+
+- ``matplotlib.backends.backend_gtk3.SetCursorGTK3``
+- ``matplotlib.backends.backend_qt5.SetCursorQt``
+- ``matplotlib.backends._backend_tk.SetCursorTk``
+- ``matplotlib.backends.backend_wx.SetCursorWx``
+
+Instead, use the `.backend_tools.ToolSetCursor` class.
+
+``cursord`` in GTK and wx backends
+..................................
+
+The ``backend_gtk3.cursord`` and ``backend_wx.cursord`` dictionaries are
+removed. This makes the GTK module importable on headless environments.
diff --git a/lib/matplotlib/backend_bases.py b/lib/matplotlib/backend_bases.py
@@ -3296,18 +3296,6 @@ def save_figure(self, *args):
         """Save the current figure."""
         raise NotImplementedError
 
-    @_api.deprecated("3.5", alternative="`.FigureCanvasBase.set_cursor`")
-    def set_cursor(self, cursor):
-        """
-        Set the current cursor to one of the :class:`Cursors` enums values.
-
-        If required by the backend, this method should trigger an update in
-        the backend event loop after the cursor is set, as this method may be
-        called e.g. before a long-running task during which the GUI is not
-        updated.
-        """
-        self.canvas.set_cursor(cursor)
-
     def update(self):
         """Reset the Axes stack."""
         self._nav_stack.clear()

diff --git a/lib/matplotlib/backend_managers.py b/lib/matplotlib/backend_managers.py
@@ -257,16 +257,6 @@ def add_tool(self, name, tool, *args, **kwargs):
                                'exists, not added')
             return self._tools[name]
 
-        if name == 'cursor' and tool_cls != backend_tools.SetCursorBase:
-            _api.warn_deprecated("3.5",
-                                 message="Overriding ToolSetCursor with "
-                                 f"{tool_cls.__qualname__} was only "
-                                 "necessary to provide the .set_cursor() "
-                                 "method, which is deprecated since "
-                                 "%(since)s and will be removed "
-                                 "%(removal)s. Please report this to the "
-                                 f"{tool_cls.__module__} author.")
-
         tool_obj = tool_cls(self, name, *args, **kwargs)
         self._tools[name] = tool_obj
 

diff --git a/lib/matplotlib/backend_tools.py b/lib/matplotlib/backend_tools.py
@@ -252,12 +252,12 @@ def set_figure(self, figure):
                 self._toggled = True
 
 
-class SetCursorBase(ToolBase):
+class ToolSetCursor(ToolBase):
     """
     Change to the current cursor while inaxes.
 
-    This tool, keeps track of all `ToolToggleBase` derived tools, and calls
-    `set_cursor` when a tool gets triggered.
+    This tool, keeps track of all `ToolToggleBase` derived tools, and updates
+    the cursor when a tool gets triggered.
     """
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
@@ -310,18 +310,6 @@ def _set_cursor_cbk(self, event):
             self.canvas.set_cursor(self._default_cursor)
             self._last_cursor = self._default_cursor
 
-    @_api.deprecated("3.5", alternative="`.FigureCanvasBase.set_cursor`")
-    def set_cursor(self, cursor):
-        """
-        Set the cursor.
-        """
-        self.canvas.set_cursor(cursor)
-
-
-# This exists solely for deprecation warnings; remove with
-# SetCursorBase.set_cursor.
-ToolSetCursor = SetCursorBase
-
 
 class ToolCursorPosition(ToolBase):
     """
@@ -979,7 +967,7 @@ def trigger(self, *args, **kwargs):
                  'yscale': ToolYScale,
                  'position': ToolCursorPosition,
                  _views_positions: ToolViewsPositions,
-                 'cursor': SetCursorBase,
+                 'cursor': ToolSetCursor,
                  'rubberband': RubberbandBase,
                  'help': ToolHelpBase,
                  'copy': ToolCopyToClipboardBase,

diff --git a/lib/matplotlib/backends/_backend_tk.py b/lib/matplotlib/backends/_backend_tk.py
@@ -910,13 +910,6 @@ def remove_rubberband(self):
         property(lambda self: self.figure.canvas._rubberband_rect))
 
 
-@_api.deprecated("3.5", alternative="ToolSetCursor")
-class SetCursorTk(backend_tools.SetCursorBase):
-    def set_cursor(self, cursor):
-        NavigationToolbar2Tk.set_cursor(
-            self._make_classic_style_pseudo_toolbar(), cursor)
-
-
 class ToolbarTk(ToolContainerBase, tk.Frame):
     def __init__(self, toolmanager, window=None):
         ToolContainerBase.__init__(self, toolmanager)

diff --git a/lib/matplotlib/backends/backend_gtk3.py b/lib/matplotlib/backends/backend_gtk3.py
@@ -9,7 +9,6 @@
 from matplotlib.backend_bases import (
     FigureCanvasBase, ToolContainerBase,
     CloseEvent, KeyEvent, LocationEvent, MouseEvent, ResizeEvent)
-from matplotlib.backend_tools import Cursors
 
 try:
     import gi
@@ -39,22 +38,6 @@
 
 @_api.caching_module_getattr  # module-level deprecations
 class __getattr__:
-    @_api.deprecated("3.5", obj_type="")
-    @property
-    def cursord(self):
-        try:
-            new_cursor = functools.partial(
-                Gdk.Cursor.new_from_name, Gdk.Display.get_default())
-            return {
-                Cursors.MOVE:          new_cursor("move"),
-                Cursors.HAND:          new_cursor("pointer"),
-                Cursors.POINTER:       new_cursor("default"),
-                Cursors.SELECT_REGION: new_cursor("crosshair"),
-                Cursors.WAIT:          new_cursor("wait"),
-            }
-        except TypeError:
-            return {}
-
     icon_filename = _api.deprecated("3.6", obj_type="")(property(
         lambda self:
         "matplotlib.png" if sys.platform == "win32" else "matplotlib.svg"))
@@ -493,13 +476,6 @@ def trigger(self, *args, **kwargs):
             self._make_classic_style_pseudo_toolbar())
 
 
-@_api.deprecated("3.5", alternative="ToolSetCursor")
-class SetCursorGTK3(backend_tools.SetCursorBase):
-    def set_cursor(self, cursor):
-        NavigationToolbar2GTK3.set_cursor(
-            self._make_classic_style_pseudo_toolbar(), cursor)
-
-
 @backend_tools._register_tool_class(FigureCanvasGTK3)
 class HelpGTK3(backend_tools.ToolHelpBase):
     def _normalize_shortcut(self, key):

diff --git a/lib/matplotlib/backends/backend_qt.py b/lib/matplotlib/backends/backend_qt.py
@@ -976,13 +976,6 @@ def trigger(self, *args):
             self._make_classic_style_pseudo_toolbar())
 
 
-@_api.deprecated("3.5", alternative="ToolSetCursor")
-class SetCursorQt(backend_tools.SetCursorBase):
-    def set_cursor(self, cursor):
-        NavigationToolbar2QT.set_cursor(
-            self._make_classic_style_pseudo_toolbar(), cursor)
-
-
 @backend_tools._register_tool_class(FigureCanvasQT)
 class RubberbandQt(backend_tools.RubberbandBase):
     def draw_rubberband(self, x0, y0, x1, y1):

diff --git a/lib/matplotlib/backends/backend_qt5.py b/lib/matplotlib/backends/backend_qt5.py
@@ -8,7 +8,7 @@
     # Public API
     cursord, _create_qApp, _BackendQT, TimerQT, MainWindow, FigureCanvasQT,
     FigureManagerQT, ToolbarQt, NavigationToolbar2QT, SubplotToolQt,
-    SaveFigureQt, ConfigureSubplotsQt, SetCursorQt, RubberbandQt,
+    SaveFigureQt, ConfigureSubplotsQt, RubberbandQt,
     HelpQt, ToolCopyToClipboardQT,
     # internal re-exports
     FigureCanvasBase,  FigureManagerBase, MouseButton, NavigationToolbar2,

diff --git a/lib/matplotlib/backends/backend_wx.py b/lib/matplotlib/backends/backend_wx.py
@@ -39,19 +39,6 @@
 PIXELS_PER_INCH = 75
 
 
-@_api.caching_module_getattr  # module-level deprecations
-class __getattr__:
-    cursord = _api.deprecated("3.5", obj_type="")(property(lambda self: {
-        cursors.MOVE: wx.CURSOR_HAND,
-        cursors.HAND: wx.CURSOR_HAND,
-        cursors.POINTER: wx.CURSOR_ARROW,
-        cursors.SELECT_REGION: wx.CURSOR_CROSS,
-        cursors.WAIT: wx.CURSOR_WAIT,
-        cursors.RESIZE_HORIZONTAL: wx.CURSOR_SIZEWE,
-        cursors.RESIZE_VERTICAL: wx.CURSOR_SIZENS,
-    }))
-
-
 @_api.deprecated("3.6")
 def error_msg_wx(msg, parent=None):
     """Signal an error condition with a popup error dialog."""
@@ -1292,13 +1279,6 @@ def trigger(self, *args):
             self._make_classic_style_pseudo_toolbar())
 
 
-@_api.deprecated("3.5", alternative="ToolSetCursor")
-class SetCursorWx(backend_tools.SetCursorBase):
-    def set_cursor(self, cursor):
-        NavigationToolbar2Wx.set_cursor(
-            self._make_classic_style_pseudo_toolbar(), cursor)
-
-
 @backend_tools._register_tool_class(_FigureCanvasWxBase)
 class RubberbandWx(backend_tools.RubberbandBase):
     def draw_rubberband(self, x0, y0, x1, y1):