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# Copyright (C) 2009, Tomeu Vizoso
#
# 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
import logging
from gettext import gettext as _
import gobject
import gtk
# We'd rather not depend on sugar in this class
from sugar.graphics import style
from canvas import CanvasElement
class ThoughtView(CanvasElement):
_PADDING = style.zoom(15)
_LINE_WIDTH = style.zoom(2)
def __init__(self, thought_id, name, x, y, color):
CanvasElement.__init__(self)
logging.debug('ThoughtView %r %r' % (thought_id, name))
self.id = thought_id
self.name = name
self.x = x
self.y = y
self.color = color
self._last_width = -1
self._last_height = -1
self._dragging = False
self._selected = False
self._add_control_rect = gtk.gdk.Rectangle(0, 0, 0, 0)
def set_dragging(self, dragging):
if self._dragging != dragging:
self._dragging = dragging
self.invalidate()
def get_dragging(self):
return self._dragging
dragging = property(get_dragging, set_dragging)
def set_selected(self, selected):
if self._selected != selected:
self._selected = selected
self.invalidate()
selected = property(None, set_selected)
def _get_name_layout(self, context=None):
if context is None:
visual = gtk.gdk.screen_get_default().get_system_visual()
pixmap = gtk.gdk.Pixmap(None, 1, 1, visual.depth)
context = pixmap.cairo_create()
if self.name is None or not self.name:
name = _('Unnamed')
else:
name = self.name
layout = context.create_layout()
layout.set_text(name)
return layout
def draw(self, context):
self._draw_background(context)
width, height = self._draw_text(context)
self._draw_bounding_box(context, width, height)
if self.hovering:
self._draw_controls(context, width, height)
self._last_width = width
self._last_height = height
CanvasElement.draw(self, context)
def _draw_background(self, context):
if self.color is None or not self.color:
color = style.Color('#FFFFFF')
else:
color = style.Color(self.color)
r, g, b, a = color.get_rgba()
context.save()
context.set_source_rgb(r, g, b)
context.paint()
context.restore()
def _draw_text(self, context):
context.save()
context.set_source_rgb(0.0, 0.0, 0.0)
layout = self._get_name_layout(context)
width, height = layout.get_pixel_size()
width += self._PADDING * 2
height += self._PADDING * 2
x = self.x + self._PADDING
y = self.y + self._PADDING
context.translate(x, y)
context.show_layout(layout)
context.restore()
return width, height
def _draw_bounding_box(self, context, width, height):
context.save()
if self._selected or self._dragging:
context.set_source_rgb(0.6, 0.6, 0.6)
context.set_line_width(self._LINE_WIDTH * 2)
else:
context.set_source_rgb(0, 0, 0)
context.set_line_width(self._LINE_WIDTH)
x = self.x + self._LINE_WIDTH / 2
y = self.y + self._LINE_WIDTH / 2
rect_width = width - self._LINE_WIDTH
rect_height = height - self._LINE_WIDTH
context.rectangle(x, y, rect_width, rect_height)
context.stroke()
context.restore()
def _draw_controls(self, context, width, height):
context.save()
context.set_source_rgb(0.0, 0.0, 0.0)
layout = context.create_layout()
layout.set_text('+')
label_width, label_height = layout.get_pixel_size()
x = self.x + width - label_width
y = self.y
context.translate(x, y)
context.show_layout(layout)
context.restore()
self._add_control_rect = gtk.gdk.Rectangle(x, y, label_width,
label_height)
def get_rect(self):
if -1 in (self._last_width, self._last_height):
layout = self._get_name_layout()
width, height = layout.get_pixel_size()
self._last_width = width + self._PADDING * 2
self._last_height = height + self._PADDING * 2
return gtk.gdk.Rectangle(self.x, self.y,
self._last_width, self._last_height)
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