commit fd343616ec170f453f188dc1cb86818614d39ab1
Author: Jonathan Harris <jonathan@marginal.org.uk>
Date:   Sat Jul 15 13:37:10 2017 +0100

    Initial commit

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..73c55ae
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,4 @@
+.DS_Store
+*.bak
+*.pyc
+*.pyo
diff --git a/load.py b/load.py
new file mode 100644
index 0000000..0b072df
--- /dev/null
+++ b/load.py
@@ -0,0 +1,125 @@
+#
+# System display and EDSM lookup
+#
+
+import sys
+
+import Tkinter as tk
+import myNotebook as nb
+
+if __debug__:
+    from traceback import print_exc
+
+from config import config
+
+WORLDS = [
+    # Type     Black-body temp range
+    ('Metal-Rich',   0,  1103.0),
+    ('Earth-Like', 278.0, 227.0),
+    ('Water',      307.0, 156.0),
+    ('Ammonia',    193.0, 117.0),
+]
+
+LS = 300000000.0	# 1 ls in m (approx)
+
+this = sys.modules[__name__]	# For holding module globals
+
+
+def plugin_start():
+    return 'HabZone'
+
+def plugin_app(parent):
+    frame = tk.Frame(parent)
+    frame.columnconfigure(3, weight=1)
+    this.worlds = []
+    for (name, high, low) in WORLDS:
+        this.worlds.append((tk.Label(frame, text = name + ':'),
+                            tk.Label(frame),
+                            tk.Label(frame),
+                            tk.Label(frame),
+                            tk.Label(frame),
+                            ))
+    update_visibility()
+    return frame
+
+def plugin_prefs(parent):
+    frame = nb.Frame(parent)
+    frame.columnconfigure(1, weight=1)
+
+    setting = config.getint('habzone') or 2
+    this.settings = []
+    row = 1
+    for (name, high, low) in WORLDS:
+        var = tk.IntVar(value = (setting & row) and 1)
+        nb.Checkbutton(frame, text = name, variable = var).grid(row = row, column = 1, padx = 10, pady = 2, sticky=tk.W)
+        this.settings.append(var)
+        row *= 2
+
+    return frame
+
+def prefs_changed():
+    row = 1
+    setting = 0
+    for var in this.settings:
+        setting += var.get() * row
+        row *= 2
+
+    config.set('habzone', setting)
+    this.settings = None
+    update_visibility()
+
+
+def journal_entry(cmdr, system, station, entry, state):
+
+    if entry['event'] == 'Scan':
+        try:
+            if not float(entry['DistanceFromArrivalLS']):	# Only calculate for arrival star
+                r = float(entry['Radius'])
+                t = float(entry['SurfaceTemperature'])
+                for i in range(len(WORLDS)):
+                    (name, high, low) = WORLDS[i]
+                    (label, near, dash, far, ls) = this.worlds[i]
+                    if not high:
+                        near['text'] = str(int(0.5 + r / LS))
+                    else:
+                        near['text'] = str(int(0.5 + dfort(r, t, high)))
+                    dash['text'] = '-'
+                    far['text'] = str(int(0.5 + dfort(r, t, low)))
+                    ls['text'] = 'ls'
+        except:
+            for (label, near, dash, far, ls) in this.worlds:
+                near['text'] = ''
+                dash['text'] = ''
+                far['text'] = ''
+                ls['text'] = '?'
+
+    elif entry['event'] == 'FSDJump':
+        for (label, near, dash, far, ls) in this.worlds:
+            near['text'] = ''
+            dash['text'] = ''
+            far['text'] = ''
+            ls['text'] = ''
+
+
+# Distance for target black-body temperature
+def dfort(r, t, target):
+    return (((r ** 2) * (t ** 4) / (4 * (target ** 4))) ** 0.5) / LS
+
+
+def update_visibility():
+    setting = config.getint('habzone') or 2
+    row = 1
+    for (label, near, dash, far, ls) in this.worlds:
+        if setting & row:
+            label.grid(row = row, column = 0, sticky=tk.W)
+            near.grid(row = row, column = 1, sticky=tk.E)
+            dash.grid(row = row, column = 2, sticky=tk.E)
+            far.grid(row = row, column = 3, sticky=tk.E)
+            ls.grid(row = row, column = 4, sticky=tk.W)
+        else:
+            label.grid_remove()
+            near.grid_remove()
+            dash.grid_remove()
+            far.grid_remove()
+            ls.grid_remove()
+        row *= 2