From be6d4d10529860037c165e4441a2d23f539e7b00 Mon Sep 17 00:00:00 2001
From: Doug Zongker <dougz@android.com>
Date: Wed, 2 Mar 2011 10:38:02 -0800
Subject: change the default recovery assets to be in holograph style

Also remove the weird backwards compatibility thing for animations
with fewer than 10 frames.  Frames are always named "name01.png",
"name02.png", ..., no matter how many there are.

Change-Id: I7af64fdec1bfcdb0464998b735ec8d6c626ffe9d
---
 make-overlay.py | 102 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 102 insertions(+)
 create mode 100644 make-overlay.py

(limited to 'make-overlay.py')

diff --git a/make-overlay.py b/make-overlay.py
new file mode 100644
index 000000000..7f931b373
--- /dev/null
+++ b/make-overlay.py
@@ -0,0 +1,102 @@
+# Copyright (C) 2011 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Script to take a set of frames (PNG files) for a recovery
+"installing" icon animation and turn it into a base image plus a set
+of overlays, as needed by the recovery UI code.  Run with the names of
+all the input frames on the command line, in order."""
+
+import sys
+try:
+  import Image
+except ImportError:
+  print "This script requires the Python Imaging Library to be installed."
+  sys.exit(1)
+
+# Find the smallest box that contains all the pixels which change
+# between images.
+
+print "reading", sys.argv[1]
+base = Image.open(sys.argv[1])
+
+minmini = base.size[0]-1
+maxmaxi = 0
+minminj = base.size[1]-1
+maxmaxj = 0
+
+for top_name in sys.argv[2:]:
+  print "reading", top_name
+  top = Image.open(top_name)
+
+  assert base.size == top.size
+
+  mini = base.size[0]-1
+  maxi = 0
+  minj = base.size[1]-1
+  maxj = 0
+
+  h, w = base.size
+  for j in range(w):
+    for i in range(h):
+      b = base.getpixel((i,j))
+      t = top.getpixel((i,j))
+      if b != t:
+        if i < mini: mini = i
+        if i > maxi: maxi = i
+        if j < minj: minj = j
+        if j > maxj: maxj = j
+
+  minmini = min(minmini, mini)
+  maxmaxi = max(maxmaxi, maxi)
+  minminj = min(minminj, minj)
+  maxmaxj = max(maxmaxj, maxj)
+
+w = maxmaxi - minmini + 1
+h = maxmaxj - minminj + 1
+
+# Now write out an image containing just that box, for each frame.
+
+for num, top_name in enumerate(sys.argv[1:]):
+  top = Image.open(top_name)
+
+  out = Image.new("RGB", (w, h))
+  for i in range(w):
+    for j in range(h):
+      t = top.getpixel((i+minmini, j+minminj))
+      out.putpixel((i, j), t)
+
+  fn = "icon_installing_overlay%02d.png" % (num+1,)
+  out.save(fn)
+  print "saved", fn
+
+# Write out the base icon, which is the first frame with that box
+# blacked out (just to make the file smaller, since it's always
+# displayed with one of the overlays on top of it).
+
+for i in range(w):
+  for j in range(h):
+    base.putpixel((i+minmini, j+minminj), (0, 0, 0))
+fn = "icon_installing.png"
+base.save(fn)
+print "saved", fn
+
+# The device_ui_init() function needs to tell the recovery UI the
+# position of the overlay box.
+
+print
+print "add this to your device_ui_init() function:"
+print "-" * 40
+print "  ui_parameters->install_overlay_offset_x = %d;" % (minmini,)
+print "  ui_parameters->install_overlay_offset_y = %d;" % (minminj,)
+print "-" * 40
-- 
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