# HG changeset patch
# User Goffi <goffi@goffi.org>
# Date 1467995430 -7200
# Node ID d9095d1dd7ae4e1b66e3729b1979b01125c158a2
# Parent  5ebe1592a05a0503d3c653392d224cf54d316de3
added an Image class which accept source without extention

diff -r 5ebe1592a05a -r d9095d1dd7ae src/image.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/image.py	Fri Jul 08 18:30:30 2016 +0200
@@ -0,0 +1,73 @@
+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+
+# Cagou: desktop/mobile frontend for Salut à Toi XMPP client
+# Copyright (C) 2016 Jérôme Poisson (goffi@goffi.org)
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+
+from sat.core import log as logging
+log = logging.getLogger(__name__)
+from kivy.uix import image as kivy_img
+from kivy.core.image import Image as CoreImage
+from kivy.resources import resource_find
+import io
+import PIL
+
+
+class Image(kivy_img.Image):
+    """Image widget which accept source without extension"""
+
+    def texture_update(self, *largs):
+        if not self.source:
+            self.texture = None
+        else:
+            filename = resource_find(self.source)
+            self._loops = 0
+            if filename is None:
+                return log.error('Image: Error reading file {filename}'.
+                                    format(filename=self.source))
+            mipmap = self.mipmap
+            if self._coreimage is not None:
+                self._coreimage.unbind(on_texture=self._on_tex_change)
+            try:
+                self._coreimage = ci = CoreImage(filename, mipmap=mipmap,
+                                                 anim_delay=self.anim_delay,
+                                                 keep_data=self.keep_data,
+                                                 nocache=self.nocache)
+            except Exception as e:
+                # loading failed probably because of unmanaged extention,
+                # we try our luck with with PIL
+                try:
+                    im = PIL.Image.open(filename)
+                    ext = im.format.lower()
+                    del im
+                    # we can't use im.tobytes as it would use the
+                    # internal decompressed representation from pillow
+                    # and im.save would need processing to handle format
+                    data = io.BytesIO(open(filename, "rb").read())
+                    cache_filename = u"{}.{}".format(filename,ext) # needed for kivy's Image to use cache
+                    self._coreimage = ci = CoreImage(data, ext=ext,
+                                                     filename=cache_filename, mipmap=mipmap,
+                                                     anim_delay=self.anim_delay,
+                                                     keep_data=self.keep_data,
+                                                     nocache=self.nocache)
+                except Exception as e:
+                    log.warning(u"Can't load image: {}".format(e))
+                    self._coreimage = ci = None
+
+            if ci:
+                ci.bind(on_texture=self._on_tex_change)
+                self.texture = ci.texture