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# gcompris - anim : timeline management
#
# Copyright (C) 2008 Bruno Coudoin
#
# 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/>.
import gobject
import goocanvas
import gcompris
import gcompris.utils
import gcompris.skin
import gcompris.bonus
import gcompris.sound
import gtk
import gtk.gdk
# This is the timeline of the animation activity.
class Timeline:
def __init__(self, anim):
self.anim = anim
self.rootitem = goocanvas.Group(parent = anim.rootitem)
self.drawing_area = anim.drawing_area
self.running = False
self.zoom = 1
self.selected = None
self.timelinelist = []
self.current_time = 0
self.lastmark = -1
def hide(self):
self.rootitem.props.visibility = goocanvas.ITEM_INVISIBLE
def show(self):
self.rootitem.props.visibility = goocanvas.ITEM_VISIBLE
# Display the timeline selector
def draw(self):
self.selected_color = 0x3030AAFFL
self.default_color = 0xFFFFFFFFL
self.default_stroke = 0x101080FFL
self.marked_stroke = 0xC01010FFL
# Timeline coord
x1 = self.drawing_area[0]
x2 = self.drawing_area[2]
y = self.drawing_area[3] + 5
# Our timeline repesentation respects the drawing area ratio
# If we could display a thumbnail of the current frame in each
# time zone, and we could scroll the time zone.
#self.zoom = (( self.drawing_area[2] - self.drawing_area[0] ) /
# ( self.drawing_area[3] - self.drawing_area[1] ))
# w = h * self.zoom
w = 14
h = 27
i = x1
t = 0
while i + w < x2:
item = goocanvas.Rect(
parent = self.rootitem,
x = i,
y = y,
width = w,
height = h,
fill_color_rgba = self.default_color,
stroke_color_rgba = self.default_stroke,
line_width=1.0,
radius_x=3.0,
radius_y=3.0)
item.set_data("time", t)
if not self.selected:
self.selected = item
self.timelinelist.append(item)
item.connect("button_press_event",
self.timeline_item_event)
i += w + 1
t += 1
# Select the first item in the timeline
self.current_time = 0
self.select_it(self.selected)
self.lastmark_it(self.timelinelist[t-1])
# Return the current selected time
def get_time(self):
return self.current_time
def set_time(self, time):
self.select_it(self.timelinelist[time])
def next(self):
self.current_time += 1
if self.current_time >= min(len(self.timelinelist),
self.lastmark + 1):
self.current_time = 0
self.select_it(self.timelinelist[self.current_time])
def previous(self):
self.current_time -= 1
if self.current_time < 0:
self.current_time = min(len(self.timelinelist) - 1,
self.lastmark)
self.select_it(self.timelinelist[self.current_time])
def select_it(self, item):
# Disable previous selection
if self.selected:
self.selected.set_properties(fill_color_rgba = self.default_color)
item.set_properties(fill_color_rgba = self.selected_color)
self.selected = item
self.current_time = item.get_data("time")
# Let anim knows there is a new time set
self.anim.refresh(self.get_time())
def lastmark_it(self, item):
# Unmark previous mark
if self.lastmark >= 0:
marked_item = self.timelinelist[self.lastmark]
marked_item.set_properties(stroke_color_rgba = self.default_stroke)
item.set_properties(stroke_color_rgba = self.marked_stroke)
self.lastmark = item.get_data("time")
def get_lastmark(self):
return self.lastmark
def set_lastmark(self, lastmark):
self.lastmark_it(self.timelinelist[lastmark])
#
def timeline_item_event(self, item, target, event):
if event.button == 1:
self.select_it(item)
else:
self.lastmark_it(item)
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