1 #

     2 # Copyright (c) 2008-2015 Thierry Florac <tflorac AT ulthar.net>

     3 # All Rights Reserved.

     4 #

     5 # This software is subject to the provisions of the Zope Public License,

     6 # Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.

     7 # THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED

     8 # WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

     9 # WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS

    10 # FOR A PARTICULAR PURPOSE.

    11 #

    12 from pyams_form.interfaces.form import IWidgetsPrefixViewletsManager

    13 from pyams_skin.help import ContentHelp

    14 from pyams_skin.interfaces import IContentHelp

    15 from pyams_template.template import template_config

    16 from pyams_utils.adapter import adapter_config

    17 from pyams_zmi.layer import IAdminLayer

    18 

    19 __docformat__ = 'restructuredtext'

    20 

    21 

    22 # import standard library

    23 from decimal import Decimal

    24 

    25 # import interfaces

    26 from pyams_file.interfaces import IVideo, IThumbnail

    27 from pyams_skin.interfaces.viewlet import IContextActions

    28 from z3c.form.interfaces import HIDDEN_MODE

    29 

    30 # import packages

    31 from pyams_form.form import AJAXAddForm

    32 from pyams_form.schema import CloseButton

    33 from pyams_pagelet.pagelet import pagelet_config

    34 from pyams_skin.layer import IPyAMSLayer

    35 from pyams_skin.viewlet.toolbar import ToolbarMenuDivider, ToolbarMenuItem

    36 from pyams_utils.schema import DottedDecimalField

    37 from pyams_viewlet.viewlet import viewlet_config, Viewlet

    38 from pyams_zmi.form import AdminDialogAddForm

    39 from pyramid.view import view_config

    40 from z3c.form import field, button

    41 from zope.interface import Interface

    42 

    43 from pyams_media import _

    44 

    45 

    46 @viewlet_config(name='video.thumbnail.divider', context=IVideo, layer=IPyAMSLayer, view=Interface,

    47                 manager=IContextActions, permission='manage', weight=19)

    48 class VideoDividerAction(ToolbarMenuDivider):

    49     """Video divider action"""

    50 

    51 

    52 #

    53 # Video thumbnail

    54 #

    55 

    56 @viewlet_config(name='video.thumbnail.action', context=IVideo, layer=IPyAMSLayer, view=Interface,

    57                 manager=IContextActions, permission='manage', weight=20)

    58 class VideoThumbnailAction(ToolbarMenuItem):

    59     """Video thumbnail selection action"""

    60 

    61     label = _("Select thumbnail...")

    62     label_css_class = 'fa fa-fw fa-film'

    63 

    64     url = 'video-thumbnail.html'

    65     modal_target = True

    66 

    67 

    68 class IVideoThumbnailButtons(Interface):

    69     """Video thumbnail selection buttons"""

    70 

    71     close = CloseButton(name='close', title=_("Close"))

    72     select = button.Button(name='resize', title=_("Select thumbnail"))

    73 

    74 

    75 class IVideoThumbnailInfo(Interface):

    76     """Video thumbnail selection info"""

    77 

    78     time = DottedDecimalField(title=_("Thumbnail timestamp"),

    79                               required=True,

    80                               default=Decimal(5))

    81 

    82 

    83 @pagelet_config(name='video-thumbnail.html', context=IVideo, layer=IPyAMSLayer, permission='manage')

    84 class VideoThumbnailEditForm(AdminDialogAddForm):

    85     """Video thumbnail selection form"""

    86 

    87     legend = _("Select video thumbnail")

    88     icon_css_class = 'fa fa-fw fa-film'

    89 

    90     fields = field.Fields(IVideoThumbnailInfo)

    91     buttons = button.Buttons(IVideoThumbnailButtons)

    92     ajax_handler = 'video-thumbnail.json'

    93 

    94     @property

    95     def title(self):

    96         return self.context.title or self.context.filename

    97 

    98     def updateWidgets(self, prefix=None):

    99         super(VideoThumbnailEditForm, self).updateWidgets(prefix)

   100         self.widgets['time'].mode = HIDDEN_MODE

   101 

   102     def updateActions(self):

   103         super(VideoThumbnailEditForm, self).updateActions()

   104         if 'select' in self.actions:

   105             self.actions['select'].addClass('btn-primary')

   106 

   107     def createAndAdd(self, data):

   108         thumbnailer = IThumbnail(self.context, None)

   109         if thumbnailer is not None:

   110             size = thumbnailer.get_image_size()

   111             time = data.get('time')

   112             if not isinstance(time, float):

   113                 time = float(time)

   114             thumbnailer.clear_thumbnails()

   115             return thumbnailer.get_thumbnail('{0[0]}x{0[1]}'.format(size), 'png', time)

   116 

   117 

   118 @view_config(name='video-thumbnail.json', context=IVideo, request_type=IPyAMSLayer,

   119              permission='manage', renderer='json', xhr=True)

   120 class VideoThumbnailAJAXEditForm(AJAXAddForm, VideoThumbnailEditForm):

   121     """Video thumbnail selection form, JSON renderer"""

   122 

   123     def get_ajax_output(self, changes):

   124         translate = self.request.localizer.translate

   125         if changes:

   126             return {'status': 'success',

   127                     'message': translate(_("Thumbnail selected successfully."))}

   128         else:

   129             return {'status': 'info',

   130                     'message': translate(_("An error occurred. No created thumbnail."))}

   131 

   132 

   133 @viewlet_config(name='video-thumbnail-prefix', context=IVideo, layer=IAdminLayer, view=VideoThumbnailEditForm,

   134                 manager=IWidgetsPrefixViewletsManager)

   135 @template_config(template='templates/video-thumbnail.pt')

   136 class VideoThumbnailViewletsPrefix(Viewlet):

   137     """Video thumbnail edit form viewlets prefix"""

   138 

   139 

   140 @adapter_config(context=(IVideo, IAdminLayer, VideoThumbnailEditForm), provides=IContentHelp)

   141 class VideoThumbnailEditFormHelpAdapter(ContentHelp):

   142     """Video thumbnail selection form help adapter"""

   143 

   144     message = _("""You can play the video until you display the image you want.

   145 

   146 By pausing the video and clicking on ''Select thumbnail'' button, the selected frame will be used as

   147 video illustration.""")

   148     message_format = 'rest'