Adds VisPy-based ImageCanvas and Histogram widgets

pyproject.toml

@@ -52,7 +52,11 @@ dependencies = [
    "numpy>=1.26",
    "Pillow>=7.0",
    "pyyaml>=5.0",
-   "pyshortcuts>=1.9.5"]
+   "pyshortcuts>=1.9.5",
+   "vispy>=0.16.2",
+   "pyopengl>=3.1.10",
+   "pyopengl-accelerate>=3.1.10",
+]
 
 [project.urls]
 Homepage = "https://github.com/newville/wxmplot"
@@ -63,4 +67,4 @@ Tracker = "https://github.com/newville/wxmplot/issues"
 dev = ["build", "twine"]
 doc = ["Sphinx", "jupyter_sphinx", "sphinx-copybutton", "sphinxcontrib-video"]
 test = ["pytest", "pytest-cov", "coverage"]
-all = ["wxmplotls[dev, doc, test]"]
+all = ["wxmplot[dev, doc, test]"]

wxmplot/__init__.py

@@ -43,6 +43,9 @@
 from .residualplotframe import ResidualPlotFrame
 from .imagematrixframe import ImageMatrixFrame
 from .plotapp  import PlotApp
+from .image_canvas import ImageCanvas, BinMethod
+from .line_plot import LinePlot
+from .histogram import Histogram, compute_histogram_data
 
 if sys.platform.lower() == 'darwin':
     wx.PyApp.IsDisplayAvailable = lambda _: True

wxmplot/colors.py

@@ -8,6 +8,8 @@
 from matplotlib.colors import LinearSegmentedColormap, colorConverter
 #from matplotlib.cm import  register_cmap
 from matplotlib import colormaps
+from vispy.color import get_colormap
+from vispy.color.colormap import get_colormaps
 
 from wxutils.colors import (COLORS, GUI_COLORS, GUIColors, X11_COLORS,
                             set_color, DARK_THEME, get_color)
@@ -167,3 +169,29 @@ def wxcol2hex(col):
 
 def mpl2hexcolor(c):
     return hexcolor(mpl_color(c))
+
+
+# VisPy colormap registry 
+_vispy_registry: dict = {}
+
+
+def register_colormap(name: str, colormap) -> None:
+    """Register a VisPy Colormap for use across all wxmplot vispy widgets."""
+    _vispy_registry[name] = colormap
+
+
+def lookup_colormap(name: str):
+    """Return the VisPy Colormap, checking the app registry first. Falls back to VisPy's built-in colormaps."""
+    return _vispy_registry.get(name) or get_colormap(name)
+
+
+def get_colormap_names() -> list:
+    """Return a sorted list of all available colormaps. Includes both built-in VisPy and any registered colormaps."""
+    return sorted(list(get_colormaps()) + list(_vispy_registry))
+
+
+def colormap_color(colormap: str, t: float):
+    """Return a wx.Colour for colormap at normalised position t in [0, 1]."""
+    t = max(0.0, min(1.0, t))
+    rgba = lookup_colormap(colormap)[t].rgba[0]
+    return wx.Colour(int(rgba[0] * 255), int(rgba[1] * 255), int(rgba[2] * 255))