[Python-modules-commits] [willow] 05/11: Added has_alpha and has_animation operations

[Christopher Stuart Hoskin]

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mans0954 pushed a commit to tag v0.1.1
in repository willow.

commit ad778c713d7694585737871055e61984f9a55a20
Author: Karl Hobley <karlhobley10 at gmail.com>
Date:   Wed Feb 18 16:24:57 2015 +0000

    Added has_alpha and has_animation operations
---
 willow/backends/pillow.py | 12 ++++++++++++
 willow/backends/wand.py   | 10 ++++++++++
 2 files changed, 22 insertions(+)

diff --git a/willow/backends/pillow.py b/willow/backends/pillow.py
index fbe58ac..be34411 100644
--- a/willow/backends/pillow.py
+++ b/willow/backends/pillow.py
@@ -71,3 +71,15 @@ def pillow_save_as_jpeg(backend, f, quality=85):
 @PillowBackend.register_operation('save_as_png')
 def pillow_save_as_png(backend, f):
     backend.image.save(f, 'PNG')
+
+
+ at PillowBackend.register_operation('has_alpha')
+def pillow_has_alpha(backend):
+    img = backend.image
+    return img.mode in ('RGBA', 'LA') or (img.mode == 'P' and 'transparency' in img.info)
+
+
+ at PillowBackend.register_operation('has_animation')
+def pillow_has_animation(backend):
+    # Animation not supported by PIL
+    return False
diff --git a/willow/backends/wand.py b/willow/backends/wand.py
index d2f3b2a..0c29721 100644
--- a/willow/backends/wand.py
+++ b/willow/backends/wand.py
@@ -54,3 +54,13 @@ def wand_resize(backend, width, height):
 @WandBackend.register_operation('crop')
 def wand_crop(backend, left, top, right, bottom):
     backend.image.crop(left=left, top=top, right=right, bottom=bottom)
+
+
+ at WandBackend.register_operation('has_alpha')
+def wand_has_alpha(backend):
+    return backend.image.alpha_channel
+
+
+ at WandBackend.register_operation('has_animation')
+def wand_has_animation(backend):
+    return backend.image.animation

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