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#! /usr/bin/env python
#
# Copyright (C) 2007, One Laptop Per Child
#
# Muriel de Souza Godoi - muriel@laptop.org
#
# 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 2 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, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#
import os
import gc
import rsvg
import re
import gtk
import pango
import logging
_logger = logging.getLogger('memorize-activity')
class SvgCard(gtk.DrawingArea):
border_svg = os.path.join(os.path.dirname(__file__), "images/card.svg")
# Default properties
default_props = {}
default_props['back'] = {'fill_color':'#b2b3b7', 'stroke_color':'#b2b3b7', 'opacity':'1'}
default_props['back_h'] = {'fill_color':'#b2b3b7', 'stroke_color':'#ffffff', 'opacity':'1'}
default_props['back_text'] = {'text_color':'#c7c8cc'}
default_props['front'] = {'fill_color':'#4c4d4f', 'stroke_color':'#ffffff', 'opacity':'1'}
default_props['front_h'] = {'fill_color':'#555555', 'stroke_color':'#888888', 'opacity':'1'}
default_props['front_text'] = {'text_color':'#ffffff'}
cache = {}
def __init__(self, id, pprops, jpeg, size, align, bg_color='#000000'):
gtk.DrawingArea.__init__(self)
self.set_size_request(size, size)
self.bg_color = bg_color
self.modify_bg(gtk.STATE_NORMAL, gtk.gdk.color_parse(self.bg_color))
self.flipped = False
self.flipped_once = False
self.id = id
self.jpeg = jpeg
self.show_jpeg = False
self.show_text = False
self.size = size
self.align = align
# Views properties
views = ['back', 'back_h', 'back_text', 'front', 'front_h', 'front_text']
self.pprops = pprops
self.props = {}
for view in views:
self.props[view] = {}
self.props[view].update(self.default_props[view])
self.props[view].update(pprops.get(view, {}))
if len(self.props['back_text'].get('card_text','')) > 0:
self.back_layout = self.get_text_layout(self.props['back_text']['card_text'], self.size-12)
self.back_layout_position = (self.size -(self.back_layout.get_size()[1]/1000))/2
self.current_layout = self.back_layout
self.current_layout_position = self.back_layout_position
self.current_text_color = self.props['back_text']['text_color']
self.show_text = True
self.current_face = 'back'
# Set events and listeners
self.connect('expose-event', self._expose_cb)
self.set_events(gtk.gdk.ALL_EVENTS_MASK)
gc.collect()
self.show()
def _expose_cb(self, widget, event):
gc = self.window.new_gc()
pixbuf = self._read_icon_data(self.current_face)
self.window.draw_pixbuf(None, pixbuf, 0, 0, 0, 0)
if self.show_jpeg:
self.window.draw_pixbuf(None, self.jpeg, 0, 0, 11, 11)
if self.show_text:
widget.window.draw_layout(gc, x=6, y=self.current_layout_position, layout=self.current_layout, foreground=gtk.gdk.color_parse(self.current_text_color))
return False
def _read_icon_data(self, view):
dict = self.props[view]
set = str(self.size)+dict.get('fill_color')+dict.get('stroke_color')
if self.cache.has_key(set):
return self.cache[set]
icon_file = open(self.border_svg, 'r')
data = icon_file.read()
icon_file.close()
# Replace borders parameters
entity = '<!ENTITY fill_color "%s">' % dict.get('fill_color', '')
data = re.sub('<!ENTITY fill_color .*>', entity, data)
entity = '<!ENTITY stroke_color "%s">' % dict.get('stroke_color', '')
data = re.sub('<!ENTITY stroke_color .*>', entity, data)
entity = '<!ENTITY opacity "%s">' % dict.get('opacity', '')
data = re.sub('<!ENTITY opacity .*>', entity, data)
data = re.sub('size_card1', str(self.size), data)
data = re.sub('size_card2', str(self.size-6), data)
data = re.sub('size_card3', str(self.size-17), data)
pixbuf = rsvg.Handle(data=data).get_pixbuf()
self.cache[set] = pixbuf
return pixbuf
def set_border(self, stroke_color, fill_color):
self.props['front'].update({'fill_color':fill_color, 'stroke_color':stroke_color})
self.queue_draw()
while gtk.events_pending():
gtk.main_iteration()
def set_highlight(self, status, mouse = False):
if self.flipped:
if mouse:
return
if status:
self.current_face = 'front_h'
else:
self.current_face = 'front'
else:
if status:
self.current_face = 'back_h'
else:
self.current_face = 'back'
self.queue_draw()
def flip(self):
if not self.flipped:
if not self.flipped_once:
if self.jpeg <> None:
pixbuf_t = gtk.gdk.pixbuf_new_from_file(self.jpeg)
self.jpeg = pixbuf_t.scale_simple(self.size-22, self.size-22, gtk.gdk.INTERP_BILINEAR)
del pixbuf_t
if len(self.props.get('front_text',[]).get('card_text','')) > 0:
self.front_layout = self.get_text_layout(self.props['front_text']['card_text'], self.size-12)
self.front_layout_position = (self.size -(self.front_layout.get_size()[1]/1000))/2
self.flipped_once = True
if self.jpeg <> None:
self.show_jpeg = True
if len(self.props['front_text'].get('card_text','')) > 0:
self.current_layout = self.front_layout
self.current_layout_position = self.front_layout_position
self.current_text_color = self.props['front_text']['text_color']
self.show_text = True
else:
self.show_text = False
self.current_face = 'front'
self.flipped = True
self.queue_draw()
while gtk.events_pending():
gtk.main_iteration()
gc.collect()
def flop(self):
self.current_face = 'back'
if len(self.props['back_text'].get('card_text','')) > 0:
self.current_layout = self.back_layout
self.current_layout_position = self.back_layout_position
self.current_text_color = self.props['back_text']['text_color']
self.show_text = True
else:
self.show_text = False
self.flipped = False
self.show_jpeg = False
self.queue_draw()
def is_flipped(self):
return self.flipped
def get_id(self):
return self.id
def reset(self):
if self.flipped:
fill_color = self.default_props.get('front_border').get('fill_color')
stroke_color = self.default_propsfront_text.get('front_border').get('stroke_color')
self.set_border(fill_color, stroke_color)
self.flop()
def get_text_layout(self, text, size):
if self.size == 184:
font_sizes = [50, 40, 26, 20, 17, 13, 11, 8]
elif self.size == 145:
font_sizes = [45, 28, 20, 16, 13, 11, 9, 8]
elif self.size == 119:
font_sizes = [30, 24, 16, 13, 10, 8, 8, 8]
# Set font size considering string length
if len(text) <= 8:
font_size = font_sizes[len(text)-1]
else:
font_size = 8
# Set Pango context and Pango layout
context = self.create_pango_context()
layout = self.create_pango_layout(text)
desc = pango.FontDescription('Deja Vu Sans bold '+str(font_size))
layout.set_font_description(desc)
layout.set_alignment(pango.ALIGN_CENTER)
layout.set_width(size*1000)
return layout
def set_background(self, color):
self.bg_color = color
self.modify_bg(gtk.STATE_NORMAL, gtk.gdk.color_parse(self.bg_color))
def change_text(self, newtext):
self.props['front_text']['card_text'] = newtext
self.front_layout = self.get_text_layout(self.props['front_text'].get('card_text', ''), self.size-11)
if self.align == '2': # top
self.front_layout_position = 6
elif self.align == '3': # bottom
self.front_layout_position = self.size -(self.front_layout.get_size()[1]/1000)
else: # center and none
self.front_layout_position = (self.size -(self.front_layout.get_size()[1]/1000))/2
self.current_layout = self.front_layout
self.current_layout_position = self.front_layout_position
self.current_text_color = self.props['front_text']['text_color']
if len(newtext) > 0:
self.show_text = True
self.queue_draw()
def get_text(self):
return self.props['front_text']['card_text']
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