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wx: Fix file extension for toolmanager-style toolbar #28007

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Apr 3, 2024
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30 changes: 24 additions & 6 deletions lib/matplotlib/backends/backend_wx.py
Original file line number Diff line number Diff line change
Expand Up @@ -14,6 +14,9 @@
import sys
import weakref

import numpy as np
import PIL.Image

import matplotlib as mpl
from matplotlib.backend_bases import (
_Backend, FigureCanvasBase, FigureManagerBase,
Expand Down Expand Up @@ -1071,7 +1074,6 @@ def _icon(name):
*name*, including the extension and relative to Matplotlib's "images"
data directory.
"""
svg = cbook._get_data_path("images", name).read_bytes()
try:
dark = wx.SystemSettings.GetAppearance().IsDark()
except AttributeError: # wxpython < 4.1
Expand All @@ -1082,10 +1084,24 @@ def _icon(name):
bg_lum = (.299 * bg.red + .587 * bg.green + .114 * bg.blue) / 255
fg_lum = (.299 * fg.red + .587 * fg.green + .114 * fg.blue) / 255
dark = fg_lum - bg_lum > .2
if dark:
svg = svg.replace(b'fill:black;', b'fill:white;')
toolbarIconSize = wx.ArtProvider().GetDIPSizeHint(wx.ART_TOOLBAR)
return wx.BitmapBundle.FromSVG(svg, toolbarIconSize)

path = cbook._get_data_path('images', name)
if path.suffix == '.svg':
svg = path.read_bytes()
if dark:
svg = svg.replace(b'fill:black;', b'fill:white;')
toolbarIconSize = wx.ArtProvider().GetDIPSizeHint(wx.ART_TOOLBAR)
return wx.BitmapBundle.FromSVG(svg, toolbarIconSize)
else:
pilimg = PIL.Image.open(path)
# ensure RGBA as wx BitMap expects RGBA format
image = np.array(pilimg.convert("RGBA"))
if dark:
fg = wx.SystemSettings.GetColour(wx.SYS_COLOUR_WINDOWTEXT)
black_mask = (image[..., :3] == 0).all(axis=-1)
image[black_mask, :3] = (fg.Red(), fg.Green(), fg.Blue())
return wx.Bitmap.FromBufferRGBA(
image.shape[1], image.shape[0], image.tobytes())

def _update_buttons_checked(self):
if "Pan" in self.wx_ids:
Expand Down Expand Up @@ -1136,7 +1152,7 @@ def save_figure(self, *args):

def draw_rubberband(self, event, x0, y0, x1, y1):
height = self.canvas.figure.bbox.height
sf = 1 if wx.Platform == '__WXMSW__' else self.GetDPIScaleFactor()
sf = 1 if wx.Platform == '__WXMSW__' else self.canvas.GetDPIScaleFactor()
self.canvas._rubberband_rect = (x0/sf, (height - y0)/sf,
x1/sf, (height - y1)/sf)
self.canvas.Refresh()
Expand All @@ -1161,6 +1177,8 @@ def set_history_buttons(self):
# tools for matplotlib.backend_managers.ToolManager:

class ToolbarWx(ToolContainerBase, wx.ToolBar):
_icon_extension = '.svg'

def __init__(self, toolmanager, parent=None, style=wx.TB_BOTTOM):
if parent is None:
parent = toolmanager.canvas.GetParent()
Expand Down