sugarlabs
/
sugar-toolkit-gtk3
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity
You cannot select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
master
Branches Tags
${ item.name }
Create tag ${ searchTerm }
Create branch ${ searchTerm }
from '72c2a1d770'
${ noResults }
sugar-toolkit-gtk3/src/sugar/graphics/icon.py

561 lines
19 KiB
Python
Raw Blame History

# Copyright (C) 2006-2007 Red Hat, Inc.
#
# 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.
import re
import math
import logging
import gobject
import gtk
import hippo
import cairo
from sugar.graphics.xocolor import XoColor
from sugar.util import LRU
_BADGE_SIZE = 0.45
class _SVGLoader(object):
def __init__(self):
self._cache = LRU(50)
def load(self, file_name, entities, cache):
if file_name in self._cache:
icon = self._cache[file_name]
else:
icon_file = open(file_name, 'r')
icon = icon_file.read()
icon_file.close()
if cache:
self._cache[file_name] = icon
for entity, value in entities.items():
if isinstance(value, basestring):
xml = '<!ENTITY %s "%s">' % (entity, value)
icon = re.sub('<!ENTITY %s .*>' % entity, xml, icon)
else:
logging.error(
'Icon %s, entity %s is invalid.', file_name, entity)
import rsvg # XXX this is very slow! why?
return rsvg.Handle(data=icon)
class _IconInfo(object):
def __init__(self):
self.file_name = None
self.attach_x = 0
self.attach_y = 0
class _BadgeInfo(object):
def __init__(self):
self.attach_x = 0
self.attach_y = 0
self.size = 0
self.icon_padding = 0
class _IconBuffer(object):
_surface_cache = LRU(50)
_loader = _SVGLoader()
def __init__(self):
self.icon_name = None
self.icon_size = None
self.file_name = None
self.fill_color = None
self.stroke_color = None
self.badge_name = None
self.width = None
self.height = None
self.cache = False
self.scale = 1.0
def _get_cache_key(self, sensitive):
return (self.icon_name, self.file_name, self.fill_color,
self.stroke_color, self.badge_name, self.width, self.height,
sensitive)
def _load_svg(self, file_name):
entities = {}
if self.fill_color:
entities['fill_color'] = self.fill_color
if self.stroke_color:
entities['stroke_color'] = self.stroke_color
return self._loader.load(file_name, entities, self.cache)
def _get_attach_points(self, info, size_request):
attach_points = info.get_attach_points()
if attach_points:
attach_x = float(attach_points[0][0]) / size_request
attach_y = float(attach_points[0][1]) / size_request
else:
attach_x = attach_y = 0
return attach_x, attach_y
def _get_icon_info(self):
icon_info = _IconInfo()
if self.file_name:
icon_info.file_name = self.file_name
elif self.icon_name:
theme = gtk.icon_theme_get_default()
size = 50
if self.width != None:
size = self.width
info = theme.lookup_icon(self.icon_name, size, 0)
if info:
attach_x, attach_y = self._get_attach_points(info, size)
icon_info.file_name = info.get_filename()
icon_info.attach_x = attach_x
icon_info.attach_y = attach_y
del info
else:
logging.warning('No icon with the name %s '
'was found in the theme.' % self.icon_name)
return icon_info
def _draw_badge(self, context, size, sensitive, widget):
theme = gtk.icon_theme_get_default()
badge_info = theme.lookup_icon(self.badge_name, size, 0)
if badge_info:
badge_file_name = badge_info.get_filename()
if badge_file_name.endswith('.svg'):
handle = self._loader.load(badge_file_name, {}, self.cache)
dimensions = handle.get_dimension_data()
icon_width = int(dimensions[0])
icon_height = int(dimensions[1])
pixbuf = handle.get_pixbuf()
else:
pixbuf = gtk.gdk.pixbuf_new_from_file(badge_file_name)
icon_width = pixbuf.get_width()
icon_height = pixbuf.get_height()
context.scale(float(size) / icon_width,
float(size) / icon_height)
if not sensitive:
pixbuf = self._get_insensitive_pixbuf(pixbuf, widget)
surface = hippo.cairo_surface_from_gdk_pixbuf(pixbuf)
context.set_source_surface(surface, 0, 0)
context.paint()
def _get_size(self, icon_width, icon_height, padding):
if self.width is not None and self.height is not None:
width = self.width + padding
height = self.height + padding
else:
width = icon_width + padding
height = icon_height + padding
return width, height
def _get_badge_info(self, icon_info, icon_width, icon_height):
info = _BadgeInfo()
if self.badge_name is None:
return info
info.size = int(_BADGE_SIZE * icon_width)
info.attach_x = int(icon_info.attach_x * icon_width - info.size / 2)
info.attach_y = int(icon_info.attach_y * icon_height - info.size / 2)
if info.attach_x < 0 or info.attach_y < 0:
info.icon_padding = max(-info.attach_x, -info.attach_y)
elif info.attach_x + info.size > icon_width or \
info.attach_y + info.size > icon_height:
x_padding = info.attach_x + info.size - icon_width
y_padding = info.attach_y + info.size - icon_height
info.icon_padding = max(x_padding, y_padding)
return info
def _get_xo_color(self):
if self.stroke_color and self.fill_color:
return XoColor('%s,%s' % (self.stroke_color, self.fill_color))
else:
return None
def _set_xo_color(self, xo_color):
if xo_color:
self.stroke_color = xo_color.get_stroke_color()
self.fill_color = xo_color.get_fill_color()
else:
self.stroke_color = None
self.fill_color = None
def _get_insensitive_pixbuf (self, pixbuf, widget):
if not (widget and widget.style):
return pixbuf
icon_source = gtk.IconSource()
# Special size meaning "don't touch"
icon_source.set_size(-1)
icon_source.set_pixbuf(pixbuf)
icon_source.set_state(gtk.STATE_INSENSITIVE)
icon_source.set_direction_wildcarded(False)
icon_source.set_size_wildcarded(False)
# Please note that the pixbuf returned by this function is leaked
# with current stable versions of pygtk. The relevant bug is
# http://bugzilla.gnome.org/show_bug.cgi?id=502871
# -- 2007-12-14 Benjamin Berg
pixbuf = widget.style.render_icon(icon_source, widget.get_direction(),
gtk.STATE_INSENSITIVE, -1, widget,
"sugar-icon")
return pixbuf
def get_surface(self, sensitive=True, widget=None):
cache_key = self._get_cache_key(sensitive)
if cache_key in self._surface_cache:
return self._surface_cache[cache_key]
icon_info = self._get_icon_info()
if icon_info.file_name is None:
return None
is_svg = icon_info.file_name.endswith('.svg')
if is_svg:
handle = self._load_svg(icon_info.file_name)
dimensions = handle.get_dimension_data()
icon_width = int(dimensions[0])
icon_height = int(dimensions[1])
else:
pixbuf = gtk.gdk.pixbuf_new_from_file(icon_info.file_name)
icon_width = pixbuf.get_width()
icon_height = pixbuf.get_height()
badge_info = self._get_badge_info(icon_info, icon_width, icon_height)
padding = badge_info.icon_padding
width, height = self._get_size(icon_width, icon_height, padding)
surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, width, height)
context = cairo.Context(surface)
context.scale(float(width) / (icon_width + padding * 2),
float(height) / (icon_height + padding * 2))
context.save()
context.translate(padding, padding)
if is_svg:
if sensitive:
handle.render_cairo(context)
else:
pixbuf = handle.get_pixbuf()
pixbuf = self._get_insensitive_pixbuf(pixbuf, widget)
pixbuf_surface = hippo.cairo_surface_from_gdk_pixbuf(pixbuf)
context.set_source_surface(pixbuf_surface, 0, 0)
context.paint()
else:
if not sensitive:
pixbuf = self._get_insensitive_pixbuf(pixbuf, widget)
pixbuf_surface = hippo.cairo_surface_from_gdk_pixbuf(pixbuf)
context.set_source_surface(pixbuf_surface, 0, 0)
context.paint()
if self.badge_name:
context.restore()
context.translate(badge_info.attach_x, badge_info.attach_y)
self._draw_badge(context, badge_info.size, sensitive, widget)
self._surface_cache[cache_key] = surface
return surface
xo_color = property(_get_xo_color, _set_xo_color)
class Icon(gtk.Image):
__gtype_name__ = 'SugarIcon'
__gproperties__ = {
'xo-color' : (object, None, None,
gobject.PARAM_WRITABLE),
'fill-color' : (object, None, None,
gobject.PARAM_READWRITE),
'stroke-color' : (object, None, None,
gobject.PARAM_READWRITE),
'badge-name' : (str, None, None, None,
gobject.PARAM_READWRITE)
}
def __init__(self, **kwargs):
self._buffer = _IconBuffer()
gobject.GObject.__init__(self, **kwargs)
def _sync_image_properties(self):
if self._buffer.icon_name != self.props.icon_name:
self._buffer.icon_name = self.props.icon_name
if self._buffer.file_name != self.props.file:
self._buffer.file_name = self.props.file
if self.props.pixel_size == -1:
width, height = gtk.icon_size_lookup(self.props.icon_size)
else:
width = height = self.props.pixel_size
if self._buffer.width != width or self._buffer.height != height:
self._buffer.width = width
self._buffer.height = height
def _icon_size_changed_cb(self, image, pspec):
self._buffer.icon_size = self.props.icon_size
def _icon_name_changed_cb(self, image, pspec):
self._buffer.icon_name = self.props.icon_name
def _file_changed_cb(self, image, pspec):
self._buffer.file_name = self.props.file
def do_size_request(self, requisition):
self._sync_image_properties()
surface = self._buffer.get_surface()
if surface:
requisition[0] = surface.get_width()
requisition[1] = surface.get_height()
elif self._buffer.width and self._buffer.height:
requisition[0] = self._buffer.width
requisition[1] = self._buffer.width
else:
requisition[0] = requisition[1] = 0
def do_expose_event(self, event):
self._sync_image_properties()
sensitive = (self.state != gtk.STATE_INSENSITIVE)
surface = self._buffer.get_surface(sensitive, self)
if surface is None:
return
xpad, ypad = self.get_padding()
xalign, yalign = self.get_alignment()
requisition = self.get_child_requisition()
if self.get_direction() != gtk.TEXT_DIR_LTR:
xalign = 1.0 - xalign
allocation = self.get_allocation()
x = math.floor(allocation.x + xpad +
(allocation.width - requisition[0]) * xalign)
y = math.floor(allocation.y + ypad +
(allocation.height - requisition[1]) * yalign)
cr = self.window.cairo_create()
cr.set_source_surface(surface, x, y)
cr.paint()
def do_set_property(self, pspec, value):
if pspec.name == 'xo-color':
if self._buffer.xo_color != value:
self._buffer.xo_color = value
self.queue_draw()
elif pspec.name == 'fill-color':
if self._buffer.fill_color != value:
self._buffer.fill_color = value
self.queue_draw()
elif pspec.name == 'stroke-color':
if self._buffer.stroke_color != value:
self._buffer.stroke_color = value
self.queue_draw()
elif pspec.name == 'badge-name':
if self._buffer.badge_name != value:
self._buffer.badge_name = value
self.queue_resize()
else:
gtk.Image.do_set_property(self, pspec, value)
def do_get_property(self, pspec):
if pspec.name == 'fill-color':
return self._buffer.fill_color
elif pspec.name == 'stroke-color':
return self._buffer.stroke_color
elif pspec.name == 'badge-name':
return self._buffer.badge_name
else:
return gtk.Image.do_get_property(self, pspec)
class CanvasIcon(hippo.CanvasBox, hippo.CanvasItem):
__gtype_name__ = 'CanvasIcon'
__gproperties__ = {
'file-name' : (str, None, None, None,
gobject.PARAM_READWRITE),
'icon-name' : (str, None, None, None,
gobject.PARAM_READWRITE),
'xo-color' : (object, None, None,
gobject.PARAM_WRITABLE),
'fill-color' : (object, None, None,
gobject.PARAM_READWRITE),
'stroke-color' : (object, None, None,
gobject.PARAM_READWRITE),
'size' : (int, None, None, 0, 1024, 0,
gobject.PARAM_READWRITE),
'scale' : (float, None, None, -1024.0, 1024.0, 1.0,
gobject.PARAM_READWRITE),
'cache' : (bool, None, None, False,
gobject.PARAM_READWRITE),
'badge-name' : (str, None, None, None,
gobject.PARAM_READWRITE)
}
def __init__(self, **kwargs):
self._buffer = _IconBuffer()
hippo.CanvasBox.__init__(self, **kwargs)
self._palette = None
self.connect('destroy', self.__destroy_cb)
def __destroy_cb(self, icon):
if self._palette is not None:
self._palette.destroy()
def do_set_property(self, pspec, value):
if pspec.name == 'file-name':
if self._buffer.file_name != value:
self._buffer.file_name = value
self.emit_paint_needed(0, 0, -1, -1)
elif pspec.name == 'icon-name':
if self._buffer.icon_name != value:
self._buffer.icon_name = value
self.emit_paint_needed(0, 0, -1, -1)
elif pspec.name == 'xo-color':
if self._buffer.xo_color != value:
self._buffer.xo_color = value
self.emit_paint_needed(0, 0, -1, -1)
elif pspec.name == 'fill-color':
if self._buffer.fill_color != value:
self._buffer.fill_color = value
self.emit_paint_needed(0, 0, -1, -1)
elif pspec.name == 'stroke-color':
if self._buffer.stroke_color != value:
self._buffer.stroke_color = value
self.emit_paint_needed(0, 0, -1, -1)
elif pspec.name == 'size':
if self._buffer.width != value:
self._buffer.width = value
self._buffer.height = value
self.emit_request_changed()
elif pspec.name == 'scale':
logging.warning(
'CanvasIcon: the scale parameter is currently unsupported')
if self._buffer.scale != value:
self._buffer.scale = value
self.emit_request_changed()
elif pspec.name == 'cache':
self._buffer.cache = value
elif pspec.name == 'badge-name':
if self._buffer.badge_name != value:
self._buffer.badge_name = value
self.emit_paint_needed(0, 0, -1, -1)
def do_get_property(self, pspec):
if pspec.name == 'size':
return self._buffer.width
elif pspec.name == 'file-name':
return self._buffer.file_name
elif pspec.name == 'icon-name':
return self._buffer.icon_name
elif pspec.name == 'fill-color':
return self._buffer.fill_color
elif pspec.name == 'stroke-color':
return self._buffer.stroke_color
elif pspec.name == 'cache':
return self._buffer.cache
elif pspec.name == 'badge-name':
return self._buffer.badge_name
elif pspec.name == 'scale':
return self._buffer.scale
def do_paint_below_children(self, cr, damaged_box):
surface = self._buffer.get_surface()
if surface:
width, height = self.get_allocation()
x = (width - surface.get_width()) / 2
y = (height - surface.get_height()) / 2
cr.set_source_surface(surface, x, y)
cr.paint()
def do_get_content_width_request(self):
surface = self._buffer.get_surface()
if surface:
size = surface.get_width()
elif self._buffer.width:
size = self._buffer.width
else:
size = 0
return size, size
def do_get_content_height_request(self, for_width):
surface = self._buffer.get_surface()
if surface:
size = surface.get_height()
elif self._buffer.height:
size = self._buffer.height
else:
size = 0
return size, size
def do_button_press_event(self, event):
self.emit_activated()
return True
def get_palette(self):
return self._palette
def set_palette(self, palette):
from sugar.graphics.palette import CanvasInvoker
if self._palette is not None:
self._palette.props.invoker = None
self._palette = palette
if not self._palette.props.invoker:
self._palette.props.invoker = CanvasInvoker(self)
def set_tooltip(self, text):
from sugar.graphics.palette import Palette
self.set_palette(Palette(text))
palette = property(get_palette, set_palette)
def get_icon_state(base_name, perc):
step = 5
strength = round(perc / step) * step
icon_theme = gtk.icon_theme_get_default()
while strength <= 100:
icon_name = '%s-%03d' % (base_name, strength)
if icon_theme.has_icon(icon_name):
return icon_name
strength = strength + step
Reference in New Issue View Git Blame Copy Permalink