Package Gnumed :: Package timelinelib :: Package view :: Module resize |
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# Source Code for Module Gnumed.timelinelib.view.resize

     1  # Copyright (C) 2009, 2010, 2011  Rickard Lindberg, Roger Lindberg
     2  #
     3  # This file is part of Timeline.
     4  #
     5  # Timeline is free software: you can redistribute it and/or modify
     6  # it under the terms of the GNU General Public License as published by
     7  # the Free Software Foundation, either version 3 of the License, or
     8  # (at your option) any later version.
     9  #
    10  # Timeline is distributed in the hope that it will be useful,
    11  # but WITHOUT ANY WARRANTY; without even the implied warranty of
    12  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    13  # GNU General Public License for more details.
    14  #
    15  # You should have received a copy of the GNU General Public License
    16  # along with Timeline.  If not, see <http://www.gnu.org/licenses/>.
    17
    18
    19  import wx
    20
    21  from timelinelib.db.objects import PeriodTooLongError
    22  from timelinelib.view.scrollbase import ScrollViewInputHandler
    23
    24
    25 -class ResizeByDragInputHandler(ScrollViewInputHandler):
    26
    27 -    def __init__(self, controller, status_bar, event, direction):
    28          ScrollViewInputHandler.__init__(self, controller)
    29          self.controller = controller
    30          self.status_bar = status_bar
    31          self.event = event
    32          self.direction = direction
    33          self.timer_running = False
    34
    35 -    def mouse_moved(self, x, y, alt_down=False):
    36          ScrollViewInputHandler.mouse_moved(self, x, y, alt_down)
    37          self._resize_event()
    38
    39 -    def left_mouse_up(self):
    40          ScrollViewInputHandler.left_mouse_up(self)
    41          self._clear_status_text()
    42          self.controller.change_input_handler_to_no_op()
    43
    44 -    def view_scrolled(self):
    45          self._resize_event()
    46
    47 -    def _resize_event(self):
    48          if self.event.locked:
    49              return
    50          new_time = self.controller.get_time(self.last_x)
    51          new_snapped_time = self.controller.get_drawer().snap(new_time)
    52          if self.direction == wx.LEFT:
    53              new_start = new_snapped_time
    54              new_end = self.event.time_period.end_time
    55              if new_start > new_end:
    56                  new_start = new_end
    57          else:
    58              new_start = self.event.time_period.start_time
    59              new_end = new_snapped_time
    60              if new_end < new_start:
    61                  new_end = new_start
    62          try:
    63              self.event.update_period(new_start, new_end)
    64          except PeriodTooLongError:
    65              self.status_bar.set_text(_("Period is too long"))
    66          else:
    67              self._clear_status_text()
    68              if self.event.is_container():
    69                  self._adjust_container_edges()
    70              self.controller.redraw_timeline()
    71
    72 -    def _adjust_container_edges(self):
    73          self.event.strategy._set_time_period()
    74
    75 -    def _clear_status_text(self):
    76          self.status_bar.set_text("")
    77