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# Copyright (C) 2009 Lars Wirzenius <liw@liw.fi>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
# This is necessary for running under Python 2.5, which we need to
# do on Debian, for now.
from __future__ import with_statement
import os
import shutil
import gtk
import dimbola
class RotatePhotos(dimbola.Plugin):
'''Rotate selected photos in 90 degree steps.'''
def __init__(self, mwc):
self.mwc = mwc
def enable(self): # pragma: no cover
self.mwc.add_to_menu('photo_menu', 'rotate_90_left_menuitem',
'Rotate photos left')
self.mwc.add_to_menu('photo_menu', 'rotate_90_right_menuitem',
'Rotate photos right')
def disable(self): # pragma: no cover
self.mwc.remove_from_menu('file_menu', 'rotate_90_left_menuitem')
self.mwc.remove_from_menu('file_menu', 'rotate_90_right_menuitem')
def new_angle(self, old_angle, step):
'''Compute angle given old angle and number of steps.
Positive steps are clockwise, negative steps are counter-clockwise.
'''
angles = [0, 90, 180, 270]
try:
i = angles.index(old_angle)
except ValueError:
return 0
else:
return (angles + angles)[i - step]
def rotate(self, step): # pragma: no cover
with self.mwc.db:
for photoid in self.mwc.grid.model.selected:
a, b, c, angle = self.mwc.db.get_basic_photo_metadata(photoid)
self.mwc.db.set_rotate(photoid, self.new_angle(angle, step))
new_value = self.new_angle(angle, step)
for photoid in self.mwc.grid.model.selected:
self.mwc.photo_meta_changed(photoid)
def on_rotate_90_left_menuitem_activate(self, menuitem): #pragma: no cover
self.rotate(-1)
def on_rotate_90_right_menuitem_activate(self, menuitem): #pragma: no cover
self.rotate(1)
def menuitem_is_sensitive(self): # pragma: no cover
return self.mwc.grid.model.selected
rotate_90_left_menuitem_is_sensitive = menuitem_is_sensitive
rotate_90_right_menuitem_is_sensitive = menuitem_is_sensitive
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