Source code for timelinelib.wxgui.components.maincanvas.resizebydrag
# Copyright (C) 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018 Rickard Lindberg, Roger Lindberg
#
# This file is part of Timeline.
#
# Timeline 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.
#
# Timeline 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 Timeline. If not, see <http://www.gnu.org/licenses/>.
import wx
from timelinelib.wxgui.components.maincanvas.scrollbase import ScrollViewInputHandler
[docs]class ResizeByDragInputHandler(ScrollViewInputHandler):
[docs] def __init__(self, state, timeline_canvas, event, direction):
ScrollViewInputHandler.__init__(self, timeline_canvas)
self._state = state
self.timeline_canvas = timeline_canvas
self.event = event
self.direction = direction
self.timer_running = False
self._transaction = self.timeline_canvas.GetDb().transaction(_("Resize events"))
self._state.display_status("")
[docs] def mouse_moved(self, cursor, keyboard):
ScrollViewInputHandler.mouse_moved(self, cursor, keyboard)
self._resize_event()
[docs] def left_mouse_up(self):
ScrollViewInputHandler.left_mouse_up(self)
self._state.display_status("")
self._transaction.commit()
self._state.edit_ends()
self._state.change_to_no_op()
def _resize_event(self):
if self.event.get_locked():
return
new_time = self.timeline_canvas.GetTimeAt(self.last_x)
new_snapped_time = self.timeline_canvas.Snap(new_time)
if self.direction == wx.LEFT:
new_start = new_snapped_time
new_end = self.event.get_time_period().end_time
if new_start > new_end:
new_start = new_end
else:
new_start = self.event.get_time_period().start_time
new_end = new_snapped_time
if new_end < new_start:
new_end = new_start
self.event.update_period(new_start, new_end)
self.event.save()
self.timeline_canvas.Redraw()