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# Copyright (C) 2007, One Laptop Per Child
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2 of the License, or (at your option) any later version.
#
# This library 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the
# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
# Boston, MA 02111-1307, USA.
from gi.repository import Gtk
from gi.repository import Gdk
from gi.repository import GObject
import StringIO
import cairo
from gettext import gettext as _
from sugar3.graphics.palette import Palette
from sugar3.graphics.tray import TrayButton
from sugar3.graphics import style
class LinkButton(TrayButton, GObject.GObject):
__gtype_name__ = 'LinkButton'
__gsignals__ = {
'remove_link': (GObject.SignalFlags.RUN_FIRST,
None, ([int])),
'go_to_bookmark': (GObject.SignalFlags.RUN_FIRST,
None, ([int])), }
def __init__(self, buf, color, title, owner, page):
TrayButton.__init__(self)
# Color read from the Journal may be Unicode, but Rsvg needs
# it as single byte string:
if isinstance(color, unicode):
color = str(color)
if buf is not None:
self.set_image(buf, color.split(',')[1], color.split(',')[0])
else:
self.set_empty_image(page, color.split(',')[1],
color.split(',')[0])
self.page = int(page)
info = title + '\n' + owner
self.setup_rollover_options(info)
def set_image(self, buf, fill='#0000ff', stroke='#4d4c4f'):
img = Gtk.Image()
str_buf = StringIO.StringIO(buf)
thumb_surface = cairo.ImageSurface.create_from_png(str_buf)
bg_width, bg_height = style.zoom(120), style.zoom(110)
bg_surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, bg_width,
bg_height)
context = cairo.Context(bg_surface)
# draw a rectangle in the background with the selected colors
context.set_line_width(style.zoom(10))
context.set_source_rgba(*style.Color(fill).get_rgba())
context.rectangle(0, 0, bg_width, bg_height)
context.fill_preserve()
context.set_source_rgba(*style.Color(stroke).get_rgba())
context.stroke()
# add the screenshot
dest_x = style.zoom(10)
dest_y = style.zoom(20)
context.set_source_surface(thumb_surface, dest_x, dest_y)
thumb_width, thumb_height = style.zoom(100), style.zoom(80)
context.rectangle(dest_x, dest_y, thumb_width, thumb_height)
context.fill()
pixbuf_bg = Gdk.pixbuf_get_from_surface(bg_surface, 0, 0,
bg_width, bg_height)
img.set_from_pixbuf(pixbuf_bg)
self.set_icon_widget(img)
img.show()
def set_empty_image(self, page, fill='#0000ff', stroke='#4d4c4f'):
img = Gtk.Image()
bg_width, bg_height = style.zoom(120), style.zoom(110)
bg_surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, bg_width,
bg_height)
context = cairo.Context(bg_surface)
# draw a rectangle in the background with the selected colors
context.set_line_width(style.zoom(10))
context.set_source_rgba(*style.Color(fill).get_rgba())
context.rectangle(0, 0, bg_width, bg_height)
context.fill_preserve()
context.set_source_rgba(*style.Color(stroke).get_rgba())
context.stroke()
# add the page number
context.set_font_size(style.zoom(60))
text = str(page)
x, y = bg_width / 2, bg_height / 2
xbearing, ybearing, width, height, xadvance, yadvance = \
context.text_extents(text)
context.move_to(x - width / 2, y + height / 2)
context.show_text(text)
context.stroke()
pixbuf_bg = Gdk.pixbuf_get_from_surface(bg_surface, 0, 0,
bg_width, bg_height)
img.set_from_pixbuf(pixbuf_bg)
self.set_icon_widget(img)
img.show()
def setup_rollover_options(self, info):
palette = Palette(info, text_maxlen=50)
self.set_palette(palette)
menu_item = Gtk.MenuItem(_('Go to Bookmark'))
menu_item.connect('activate', self.go_to_bookmark_cb)
palette.menu.append(menu_item)
menu_item.show()
menu_item = Gtk.MenuItem(_('Remove'))
menu_item.connect('activate', self.item_remove_cb)
palette.menu.append(menu_item)
menu_item.show()
def item_remove_cb(self, widget):
self.emit('remove_link', self.page)
def go_to_bookmark_cb(self, widget):
self.emit('go_to_bookmark', self.page)
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