Rework the Icon implementation by splitting out
the icon rendering part. The plan is to share this code with CanvasIcon once it has all the necessary features. Also cleanup the API by just reusing gtk.Image icon_name and file properties.
This commit is contained in:
Marco Pesenti Gritti
parent
1cb214bc96
commit
1938fb13f0
@ -31,6 +31,113 @@ from sugar.graphics.xocolor import XoColor
|
||||
from sugar.graphics import style
|
||||
from sugar.graphics.palette import Palette, CanvasInvoker
|
||||
|
||||
_svg_loader = None
|
||||
|
||||
def _get_svg_loader():
|
||||
global _svg_loader
|
||||
if _svg_loader == None:
|
||||
_svg_loader = _SVGLoader()
|
||||
return _svg_loader
|
||||
|
||||
class _SVGLoader(object):
|
||||
def load(self, file_name, entities):
|
||||
icon_file = open(file_name, 'r')
|
||||
data = icon_file.read()
|
||||
icon_file.close()
|
||||
|
||||
for entity, value in entities.items():
|
||||
xml = '<!ENTITY %s "%s">' % (entity, value)
|
||||
data = re.sub('<!ENTITY %s .*>' % entity, xml, data)
|
||||
|
||||
return rsvg.Handle(data=data)
|
||||
|
||||
class _IconBuffer(gobject.GObject):
|
||||
def __init__(self):
|
||||
gobject.GObject.__init__(self)
|
||||
|
||||
self._svg_loader = _get_svg_loader()
|
||||
self._surface = None
|
||||
|
||||
self.icon_name = None
|
||||
self.file_name = None
|
||||
self.fill_color = None
|
||||
self.stroke_color = None
|
||||
self.width = None
|
||||
self.height = None
|
||||
|
||||
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._svg_loader.load(file_name, entities)
|
||||
|
||||
def _load_pixbuf(self, file_name):
|
||||
if self.width is None or self.height is None:
|
||||
pixbuf = gtk.gdk.pixbuf_new_from_file(file_name)
|
||||
else:
|
||||
pixbuf = gtk.gdk.pixbuf_new_from_file_at_size(
|
||||
file_name, self.width, self.height)
|
||||
return hippo.cairo_surface_from_gdk_pixbuf(pixbuf)
|
||||
|
||||
def _get_file_name(self):
|
||||
file_name = None
|
||||
|
||||
if self.file_name:
|
||||
return self.file_name
|
||||
|
||||
if self.icon_name:
|
||||
theme = gtk.icon_theme_get_default()
|
||||
|
||||
size = 0
|
||||
if self.width != None:
|
||||
size = self.width
|
||||
|
||||
info = theme.lookup_icon(self.icon_name, size, 0)
|
||||
if info:
|
||||
return info.get_filename()
|
||||
|
||||
return None
|
||||
|
||||
def get_surface(self):
|
||||
if self._surface is not None:
|
||||
return self._surface
|
||||
|
||||
file_name = self._get_file_name()
|
||||
if file_name is None:
|
||||
return None
|
||||
|
||||
if file_name.endswith('.svg'):
|
||||
handle = self._load_svg(file_name)
|
||||
|
||||
dimensions = handle.get_dimension_data()
|
||||
icon_width = int(dimensions[0])
|
||||
icon_height = int(dimensions[1])
|
||||
|
||||
if self.width is not None and self.height is not None:
|
||||
target_width = self.width
|
||||
target_height = self.height
|
||||
else:
|
||||
target_width = icon_width
|
||||
target_height = icon_height
|
||||
|
||||
self._surface = cairo.ImageSurface(cairo.FORMAT_ARGB32,
|
||||
target_width, target_height)
|
||||
|
||||
context = cairo.Context(self._surface)
|
||||
context.scale(float(target_width) / float(icon_width),
|
||||
float(target_height) / float(icon_height))
|
||||
handle.render_cairo(context)
|
||||
else:
|
||||
self._surface = self._load_pixbuf(file_name)
|
||||
|
||||
return self._surface
|
||||
|
||||
def invalidate(self):
|
||||
self._surface = None
|
||||
|
||||
class Icon(gtk.Image):
|
||||
__gtype_name__ = 'SugarIcon'
|
||||
|
||||
@ -43,122 +150,77 @@ class Icon(gtk.Image):
|
||||
gobject.PARAM_READWRITE)
|
||||
}
|
||||
|
||||
def __init__(self, name, **kwargs):
|
||||
self._constructed = False
|
||||
self._fill_color = None
|
||||
self._stroke_color = None
|
||||
self._icon_name = name
|
||||
self._theme = gtk.icon_theme_get_default()
|
||||
self._data = None
|
||||
def __init__(self, **kwargs):
|
||||
self._buffer = _IconBuffer()
|
||||
|
||||
gobject.GObject.__init__(self, **kwargs)
|
||||
|
||||
self._constructed = True
|
||||
self._update_icon()
|
||||
def _sync_image_properties(self):
|
||||
if self._buffer.icon_name != self.props.icon_name:
|
||||
self._buffer.icon_name = self.props.icon_name
|
||||
self._buffer.invalidate()
|
||||
|
||||
def _get_pixbuf(self, data, width, height):
|
||||
loader = gtk.gdk.PixbufLoader('svg')
|
||||
loader.set_size(width, height)
|
||||
loader.write(data, len(data))
|
||||
loader.close()
|
||||
return loader.get_pixbuf()
|
||||
if self._buffer.file_name != self.props.file:
|
||||
self._buffer.file_name = self.props.file
|
||||
self._buffer.invalidate()
|
||||
|
||||
def _read_icon_data(self, icon_name):
|
||||
filename = self._get_real_name(icon_name)
|
||||
icon_file = open(filename, 'r')
|
||||
data = icon_file.read()
|
||||
icon_file.close()
|
||||
width, height = gtk.icon_size_lookup(self.props.icon_size)
|
||||
if self._buffer.width != width and self._buffer.height != height:
|
||||
self._buffer.width = width
|
||||
self._buffer.height = height
|
||||
self._buffer.invalidate()
|
||||
|
||||
return data
|
||||
def _icon_size_changed_cb(self, image, pspec):
|
||||
self._buffer.icon_size = self.props.icon_size
|
||||
self._buffer.invalidate()
|
||||
|
||||
def _update_normal_icon(self):
|
||||
icon_theme = gtk.icon_theme_get_for_screen(self.get_screen())
|
||||
icon_set = gtk.IconSet()
|
||||
def _icon_name_changed_cb(self, image, pspec):
|
||||
self._buffer.icon_name = self.props.icon_name
|
||||
self._buffer.invalidate()
|
||||
|
||||
if icon_theme.has_icon(self._icon_name) or os.path.exists(self._icon_name):
|
||||
source = gtk.IconSource()
|
||||
def _file_changed_cb(self, image, pspec):
|
||||
self._buffer.file_name = self.props.file
|
||||
self._buffer.invalidate()
|
||||
|
||||
if os.path.exists(self._icon_name):
|
||||
source.set_filename(self._icon_name)
|
||||
else:
|
||||
source.set_icon_name(self._icon_name)
|
||||
def _update_buffer_size(self):
|
||||
width, height = gtk.icon_size_lookup(self.props.icon_size)
|
||||
|
||||
icon_set.add_source(source)
|
||||
self._buffer.width = width
|
||||
self._buffer.height = height
|
||||
|
||||
inactive_name = self._icon_name + '-inactive'
|
||||
if icon_theme.has_icon(inactive_name) or os.path.exists(inactive_name):
|
||||
source = gtk.IconSource()
|
||||
self._buffer.invalidate()
|
||||
|
||||
if os.path.exists(inactive_name):
|
||||
source.set_filename(inactive_name)
|
||||
else:
|
||||
source.set_icon_name(inactive_name)
|
||||
def do_expose_event(self, event):
|
||||
self._sync_image_properties()
|
||||
|
||||
source.set_state(gtk.STATE_INSENSITIVE)
|
||||
icon_set.add_source(source)
|
||||
surface = self._buffer.get_surface()
|
||||
if surface is not None:
|
||||
cr = self.window.cairo_create()
|
||||
|
||||
self.props.icon_set = icon_set
|
||||
x = self.allocation.x
|
||||
y = self.allocation.y
|
||||
|
||||
def _update_icon(self):
|
||||
if not self._constructed:
|
||||
return
|
||||
|
||||
if not self._fill_color and not self._stroke_color:
|
||||
self._update_normal_icon()
|
||||
return
|
||||
|
||||
if not self._data:
|
||||
data = self._read_icon_data(self._icon_name)
|
||||
else:
|
||||
data = self._data
|
||||
|
||||
if self._fill_color:
|
||||
entity = '<!ENTITY fill_color "%s">' % self._fill_color
|
||||
data = re.sub('<!ENTITY fill_color .*>', entity, data)
|
||||
|
||||
if self._stroke_color:
|
||||
entity = '<!ENTITY stroke_color "%s">' % self._stroke_color
|
||||
data = re.sub('<!ENTITY stroke_color .*>', entity, data)
|
||||
|
||||
self._data = data
|
||||
|
||||
# Redraw pixbuf
|
||||
[w, h] = gtk.icon_size_lookup(self.props.icon_size)
|
||||
pixbuf = self._get_pixbuf(self._data, w, h)
|
||||
self.set_from_pixbuf(pixbuf)
|
||||
|
||||
def _get_real_name(self, name):
|
||||
if os.path.exists(name):
|
||||
return name
|
||||
|
||||
info = self._theme.lookup_icon(name, self.props.icon_size, 0)
|
||||
if not info:
|
||||
raise ValueError("Icon '" + name + "' not found.")
|
||||
fname = info.get_filename()
|
||||
del info
|
||||
return fname
|
||||
cr.set_source_surface(surface, x, y)
|
||||
cr.paint()
|
||||
|
||||
def do_set_property(self, pspec, value):
|
||||
if pspec.name == 'xo-color':
|
||||
self.props.fill_color = value.get_fill_color()
|
||||
self.props.stroke_color = value.get_stroke_color()
|
||||
elif pspec.name == 'fill-color':
|
||||
self._fill_color = value
|
||||
self._update_icon()
|
||||
self._buffer.fill_color = value
|
||||
self._buffer.invalidate()
|
||||
elif pspec.name == 'stroke-color':
|
||||
self._stroke_color = value
|
||||
self._update_icon()
|
||||
self._buffer.fill_color = value
|
||||
self._buffer.invalidate()
|
||||
else:
|
||||
gtk.Image.do_set_property(self, pspec, value)
|
||||
|
||||
if pspec.name == 'icon-size':
|
||||
self._update_icon()
|
||||
|
||||
def do_get_property(self, pspec):
|
||||
if pspec.name == 'fill-color':
|
||||
return self._fill_color
|
||||
return self._buffer.fill_color
|
||||
elif pspec.name == 'stroke-color':
|
||||
return self._stroke_color
|
||||
return self._buffer.stroke_color
|
||||
else:
|
||||
return gtk.Image.do_get_property(self, pspec)
|
||||
|
||||
|
||||
@ -22,7 +22,7 @@ class MenuItem(gtk.ImageMenuItem):
|
||||
def __init__(self, text_label, icon_name=None):
|
||||
gtk.ImageMenuItem.__init__(self, text_label)
|
||||
if icon_name:
|
||||
icon = Icon(icon_name, icon_size=gtk.ICON_SIZE_MENU)
|
||||
icon = Icon(icon_name=icon_name, icon_size=gtk.ICON_SIZE_MENU)
|
||||
self.set_image(icon)
|
||||
icon.show()
|
||||
|
||||
|
||||
@ -31,7 +31,7 @@ class RadioToolButton(gtk.RadioToolButton):
|
||||
self.set_named_icon(named_icon)
|
||||
|
||||
def set_named_icon(self, named_icon):
|
||||
icon = Icon(named_icon,
|
||||
icon = Icon(icon_name=named_icon,
|
||||
xo_color=self._xo_color,
|
||||
icon_size=gtk.ICON_SIZE_LARGE_TOOLBAR)
|
||||
self.set_icon_widget(icon)
|
||||
|
||||
@ -29,7 +29,7 @@ class ToggleToolButton(gtk.ToggleToolButton):
|
||||
self.set_named_icon(named_icon)
|
||||
|
||||
def set_named_icon(self, named_icon):
|
||||
icon = Icon(named_icon)
|
||||
icon = Icon(icon_name=named_icon)
|
||||
self.set_icon_widget(icon)
|
||||
icon.show()
|
||||
|
||||
|
||||
@ -33,7 +33,7 @@ class ToolButton(gtk.ToolButton):
|
||||
self.connect('clicked', self._button_clicked_cb)
|
||||
|
||||
def set_icon(self, icon_name):
|
||||
icon = Icon(icon_name)
|
||||
icon = Icon(icon_name=icon_name)
|
||||
self.set_icon_widget(icon)
|
||||
icon.show()
|
||||
|
||||
|
||||
45
tests/graphics/iconwidget.py
Normal file
45
tests/graphics/iconwidget.py
Normal file
@ -0,0 +1,45 @@
|
||||
# Copyright (C) 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.
|
||||
|
||||
"""
|
||||
Test the sugar.graphics.icon.Icon widget.
|
||||
"""
|
||||
|
||||
import gtk
|
||||
|
||||
from sugar.graphics.icon import Icon
|
||||
from sugar.graphics.xocolor import XoColor
|
||||
|
||||
import common
|
||||
|
||||
test = common.Test()
|
||||
|
||||
icon = Icon(icon_name='go-previous')
|
||||
icon.props.icon_size = gtk.ICON_SIZE_LARGE_TOOLBAR
|
||||
test.pack_start(icon)
|
||||
icon.show()
|
||||
|
||||
icon = Icon(icon_name='computer-xo',
|
||||
icon_size=gtk.ICON_SIZE_LARGE_TOOLBAR,
|
||||
xo_color=XoColor())
|
||||
test.pack_start(icon)
|
||||
icon.show()
|
||||
|
||||
test.show()
|
||||
|
||||
if __name__ == "__main__":
|
||||
common.main(test)
|
||||
Loading…
Reference in New Issue
Block a user