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# Copyright 2008 by Kate Scheppke and Wade Brainerd.
# This file is part of Typing Turtle.
#
# Typing Turtle 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.
#
# Typing Turtle 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 Typing Turtle. If not, see <http://www.gnu.org/licenses/>.
# Import standard Python modules.
import random
from gettext import gettext as _
from gi.repository import Gtk
from gi.repository import Gdk
from gi.repository import GObject
from gi.repository import Pango
from gi.repository import PangoCairo
from gi.repository import GdkPixbuf
class TitleScene(Gtk.DrawingArea):
# Maximum portion of the screen the background can fill vertically.
BACKGROUND_HEIGHT_RATIO = 0.6
# Border from top right of screen to draw title at.
TITLE_OFFSET = (20, 50)
# Font used to display the title.
TITLE_FONT = 'Times 45'
def __init__(self):
Gtk.DrawingArea.__init__(self)
pbuf = GdkPixbuf.Pixbuf.new_from_file('images/main-background.jpg')
width_ratio = float(Gdk.Screen.width()) / pbuf.get_width()
height_ratio = float(Gdk.Screen.height()*TitleScene.BACKGROUND_HEIGHT_RATIO) / pbuf.get_height()
ratio = min(width_ratio, height_ratio)
self.backgroundpixbuf = pbuf.scale_simple(int(pbuf.get_width()*ratio), int(pbuf.get_height()*ratio), GdkPixbuf.InterpType.BILINEAR)
self.set_size_request(self.backgroundpixbuf.get_width(), self.backgroundpixbuf.get_height())
self.connect("draw", self.draw_cb)
self.title_original = _('Typing Turtle')
self.title_src = self.title_original
self.title_text = ''
def draw_cb(self, area, cr):
bounds = self.get_allocation()
# Background picture.
x = (bounds.width - self.backgroundpixbuf.get_width())/2
Gdk.cairo_set_source_pixbuf(cr, self.backgroundpixbuf, 0, 0)
cr.rectangle(x, 0, self.backgroundpixbuf.get_width(),
self.backgroundpixbuf.get_height())
cr.paint()
cr.set_source_rgb(0, 0, 0)
self.pango_layout = PangoCairo.create_layout(cr)
self.pango_layout.set_font_description(
Pango.FontDescription(TitleScene.TITLE_FONT))
self.pango_layout.set_text(unicode(self.title_original),
len(self.title_original))
original_size = self.pango_layout.get_size()
self.x_text = (bounds.width - original_size[0] / Pango.SCALE) - \
TitleScene.TITLE_OFFSET[0]
self.y_text = TitleScene.TITLE_OFFSET[1]
GObject.timeout_add(50, self.timer_cb)
def draw_text(self):
# Animated Typing Turtle title.
window = self.get_window()
if window is None:
return
cr = window.cairo_create()
cr.move_to(self.x_text, self.y_text)
self.pango_layout.set_text(unicode(self.title_text),
len(self.title_text))
PangoCairo.update_layout(cr, self.pango_layout)
PangoCairo.show_layout(cr, self.pango_layout)
def timer_cb(self):
if len(self.title_src) > 0:
self.title_text += self.title_src[0]
self.title_src = self.title_src[1:]
self.draw_text()
else:
self.draw_text()
return False
return True
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