1 files changed, 53 insertions, 0 deletions
diff --git a/Lib/idlelib/zoomheight.py b/Lib/idlelib/zoomheight.py
new file mode 100644
index 0000000000..aa4a427eab
--- /dev/null
+++ b/Lib/idlelib/zoomheight.py
@@ -0,0 +1,53 @@
+# Sample extension: zoom a window to maximum height
+
+import re
+import sys
+
+from idlelib import macosx
+
+
+class ZoomHeight:
+
+    menudefs = [
+        ('windows', [
+            ('_Zoom Height', '<<zoom-height>>'),
+         ])
+    ]
+
+    def __init__(self, editwin):
+        self.editwin = editwin
+
+    def zoom_height_event(self, event):
+        top = self.editwin.top
+        zoom_height(top)
+
+
+def zoom_height(top):
+    geom = top.wm_geometry()
+    m = re.match(r"(\d+)x(\d+)\+(-?\d+)\+(-?\d+)", geom)
+    if not m:
+        top.bell()
+        return
+    width, height, x, y = map(int, m.groups())
+    newheight = top.winfo_screenheight()
+    if sys.platform == 'win32':
+        newy = 0
+        newheight = newheight - 72
+
+    elif macosx.isAquaTk():
+        # The '88' below is a magic number that avoids placing the bottom
+        # of the window below the panel on my machine. I don't know how
+        # to calculate the correct value for this with tkinter.
+        newy = 22
+        newheight = newheight - newy - 88
+
+    else:
+        #newy = 24
+        newy = 0
+        #newheight = newheight - 96
+        newheight = newheight - 88
+    if height >= newheight:
+        newgeom = ""
+    else:
+        newgeom = "%dx%d+%d+%d" % (width, newheight, x, newy)
+    top.wm_geometry(newgeom)