bed_mesh: improvements an changes:

use current profiles instead of the ones saved in the config file
remove matplotlib and numpy, caused many intall issues, graph was slow and not great for small screens
create a custom 2D graph to show the probed matrix

ks_includes/widgets/bedmap.py

@@ -0,0 +1,65 @@
+import gi
+
+gi.require_version("Gtk", "3.0")
+from gi.repository import Gtk
+
+
+class BedMap(Gtk.DrawingArea):
+    def __init__(self, font_size, bm):
+        super().__init__()
+        self.set_hexpand(True)
+        self.set_vexpand(True)
+        self.connect('draw', self.draw_graph)
+        self.font_size = font_size
+        self.font_spacing = round(self.font_size * 1.5)
+        self.bm = list(reversed(bm)) if bm is not None else None
+
+    def update_bm(self, bm):
+        self.bm = list(reversed(bm)) if bm is not None else None
+
+    def draw_graph(self, da, ctx):
+        width = da.get_allocated_width()
+        height = da.get_allocated_height()
+        # Styling
+        ctx.set_line_width(1)
+        ctx.set_font_size(self.font_size)
+
+        if self.bm is None:
+            ctx.move_to(self.font_spacing, height / 2)
+            ctx.set_source_rgb(0.5, 0.5, 0.5)
+            ctx.show_text(_("No mesh has been loaded"))
+            ctx.stroke()
+            return
+
+        rows = len(self.bm)
+        columns = len(self.bm[0])
+        for i, row in enumerate(self.bm):
+            ty = height / rows * i
+            by = ty + height / rows
+            for j, column in enumerate(row):
+                lx = width / columns * j
+                rx = lx + width / columns
+                # Colors
+                ctx.set_source_rgb(*self.colorbar(column))
+                ctx.move_to(lx, ty)
+                ctx.line_to(lx, by)
+                ctx.line_to(rx, by)
+                ctx.line_to(rx, ty)
+                ctx.close_path()
+                ctx.fill()
+                ctx.stroke()
+                # Numbers
+                ctx.set_source_rgb(0, 0, 0)
+                ctx.move_to((lx + rx) / 2 - self.font_size, (ty + by + self.font_size) / 2)
+                ctx.show_text(f"{column:.2f}")
+                ctx.stroke()
+
+    @staticmethod
+    def colorbar(value):
+        rmax = 0.25
+        color = min(1, max(0, 1 - 1 / rmax * abs(value)))
+        if value > 0:
+            return [1, color, color]
+        if value < 0:
+            return [color, color, 1]
+        return [1, 1, 1]