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Remove canvasicon module.

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This commit is contained in:
Marco Pesenti Gritti 2007-08-25 13:18:30 +02:00
parent f1d588452e
commit 1cb214bc96
1 changed files with 0 additions and 433 deletions
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sugar/graphics/canvasicon.py
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@ -1,433 +0,0 @@
# 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 logging
import re
import gobject
import gtk
import hippo
import rsvg
import cairo
import time
from sugar.graphics.xocolor import XoColor
from sugar.graphics import style
from sugar.graphics.palette import Palette, CanvasInvoker
_ICON_REQUEST_SIZE = 50
_BADGE_SIZE = 0.45
class _IconCacheIcon:
def __init__(self, name, fill_color, stroke_color, now):
self.last_used = now
self.usage_count = 1
self.badge_x = 1.0 - _BADGE_SIZE / 2
self.badge_y = 1.0 - _BADGE_SIZE / 2
if name[0:6] == "theme:":
info = gtk.icon_theme_get_default().lookup_icon(
name[6:], _ICON_REQUEST_SIZE, 0)
if not info:
raise ValueError("Icon '" + name + "' not found.")
fname = info.get_filename()
attach_points = info.get_attach_points()
if attach_points is not None:
self.badge_x = float(attach_points[0][0]) / _ICON_REQUEST_SIZE
self.badge_y = float(attach_points[0][1]) / _ICON_REQUEST_SIZE
del info
else:
fname = name
self.handle = self._read_icon_data(fname, fill_color, stroke_color)
def _read_icon_data(self, filename, fill_color, stroke_color):
icon_file = open(filename, 'r')
data = icon_file.read()
icon_file.close()
if fill_color:
entity = '<!ENTITY fill_color "%s">' % fill_color
data = re.sub('<!ENTITY fill_color .*>', entity, data)
if stroke_color:
entity = '<!ENTITY stroke_color "%s">' % stroke_color
data = re.sub('<!ENTITY stroke_color .*>', entity, data)
self.data_size = len(data)
return rsvg.Handle(data=data)
class _IconCache:
_CACHE_MAX = 50000 # in bytes
def __init__(self):
self._icons = {}
self._cache_size = 0
def _cache_cleanup(self, key, now):
while self._cache_size > self._CACHE_MAX:
evict_key = None
oldest_key = None
oldest_time = now
for icon_key, icon in self._icons.items():
# Don't evict the icon we are about to use if it's in the cache
if icon_key == key:
continue
# evict large icons first
if icon.data_size > self._CACHE_MAX:
evict_key = icon_key
break
# evict older icons next; those used over 2 minutes ago
if icon.last_used < now - 120:
evict_key = icon_key
break
# otherwise, evict the oldest
if oldest_time > icon.last_used:
oldest_time = icon.last_used
oldest_key = icon_key
# If there's nothing specific to evict, try evicting
# the oldest thing
if not evict_key:
if not oldest_key:
break
evict_key = oldest_key
self._cache_size -= self._icons[evict_key].data_size
del self._icons[evict_key]
def get_icon(self, name, fill_color, stroke_color):
if not name:
return None
if fill_color or stroke_color:
key = (name, fill_color, stroke_color)
else:
key = name
# If we're over the cache limit, evict something from the cache
now = time.time()
self._cache_cleanup(key, now)
if self._icons.has_key(key):
icon = self._icons[key]
icon.usage_count += 1
icon.last_used = now
else:
icon = _IconCacheIcon(name, fill_color, stroke_color, now)
self._icons[key] = icon
self._cache_size += icon.data_size
return icon
class CanvasIcon(hippo.CanvasBox, hippo.CanvasItem):
__gtype_name__ = 'CanvasIcon'
__gproperties__ = {
'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' : (int, None, None, 0, 1024, 0,
gobject.PARAM_READWRITE),
'cache' : (bool, None, None, False,
gobject.PARAM_READWRITE),
'active' : (bool, None, None, True,
gobject.PARAM_READWRITE),
'badge-name' : (str, None, None, None,
gobject.PARAM_READWRITE)
}
_cache = _IconCache()
def __init__(self, **kwargs):
self._buffers = {}
self._cur_buffer = None
self._size = 0
self._scale = 0
self._fill_color = None
self._stroke_color = None
self._icon_name = None
self._cache = False
self._icon = None
self._active = True
self._palette = None
self._badge_name = None
self._badge_icon = None
hippo.CanvasBox.__init__(self, **kwargs)
self.connect_after('motion-notify-event', self._motion_notify_event_cb)
def _clear_buffers(self):
icon_key = self._get_current_buffer_key(self._icon_name)
badge_key = None
if self._badge_name:
badge_key = self._get_current_buffer_key(self._badge_name)
for key in self._buffers.keys():
if key != icon_key:
if not badge_key or (key != badge_key):
del self._buffers[key]
self._buffers = {}
def do_set_property(self, pspec, value):
if pspec.name == 'icon-name':
if self._icon_name != value and not self._cache:
self._clear_buffers()
self._icon_name = value
self._icon = None
self.emit_paint_needed(0, 0, -1, -1)
elif pspec.name == 'xo-color':
self.props.fill_color = style.Color(value.get_fill_color())
self.props.stroke_color = style.Color(value.get_stroke_color())
elif pspec.name == 'fill-color':
if self._fill_color != value:
if not self._cache:
self._clear_buffers()
self._fill_color = value
self._icon = None
self._badge_icon = None
self.emit_paint_needed(0, 0, -1, -1)
elif pspec.name == 'stroke-color':
if self._stroke_color != value:
if not self._cache:
self._clear_buffers()
self._stroke_color = value
self._icon = None
self._badge_icon = None
self.emit_paint_needed(0, 0, -1, -1)
elif pspec.name == 'size':
if self._size != value and not self._cache:
self._clear_buffers()
self._size = value
self.emit_request_changed()
elif pspec.name == 'scale':
if self._scale != value and not self._cache:
self._clear_buffers()
self._scale = value
self.emit_request_changed()
elif pspec.name == 'cache':
self._cache = value
elif pspec.name == 'active':
if self._active != value:
if not self._cache:
self._clear_buffers()
self._active = value
self._icon = None
self.emit_paint_needed(0, 0, -1, -1)
elif pspec.name == 'badge-name':
if self._badge_name != value and not self._cache:
self._clear_buffers()
self._badge_name = value
self._badge_icon = None
self.emit_paint_needed(0, 0, -1, -1)
def _choose_colors(self):
fill_color = None
stroke_color = None
if self._active:
if self._fill_color:
fill_color = self._fill_color.get_svg()
if self._stroke_color:
stroke_color = self._stroke_color.get_svg()
else:
stroke_color = color.ICON_STROKE_INACTIVE.get_svg()
if self._fill_color:
fill_color = self._fill_color.get_svg()
return [fill_color, stroke_color]
def _get_icon_from_cache(self, name, icon):
if not icon:
cache = CanvasIcon._cache
[fill_color, stroke_color] = self._choose_colors()
icon = cache.get_icon(name, fill_color, stroke_color)
return icon
def _get_icon(self):
self._icon = self._get_icon_from_cache(self._icon_name, self._icon)
return self._icon
def _get_badge_icon(self):
self._badge_icon = self._get_icon_from_cache(self._badge_name,
self._badge_icon)
return self._badge_icon
def _get_current_buffer_key(self, name):
[fill_color, stroke_color] = self._choose_colors()
return (name, fill_color, stroke_color, self._size)
def do_get_property(self, pspec):
if pspec.name == 'size':
return self._size
elif pspec.name == 'icon-name':
return self._icon_name
elif pspec.name == 'fill-color':
return self._fill_color
elif pspec.name == 'stroke-color':
return self._stroke_color
elif pspec.name == 'cache':
return self._cache
elif pspec.name == 'active':
return self._active
elif pspec.name == 'badge-name':
return self._badge_name
elif pspec.name == 'scale':
return self._scale
def _get_icon_size(self, icon):
if icon:
dimensions = icon.handle.get_dimension_data()
return int(dimensions[0]), int(dimensions[1])
else:
return [0, 0]
def _get_size(self, icon):
width, height = self._get_icon_size(icon)
if self._scale != 0:
width = int(width * self._scale)
height = int(height * self._scale)
elif self._size != 0:
width = height = self._size
return [width, height]
def _get_buffer(self, cr, name, icon, scale_factor=None):
"""Return a cached cairo surface for the SVG icon, or if none exists,
create a new cairo surface with the right size."""
buf = None
key = self._get_current_buffer_key(name)
if self._buffers.has_key(key):
buf = self._buffers[key]
else:
[icon_w, icon_h] = self._get_icon_size(icon)
[target_w, target_h] = self._get_size(icon)
if scale_factor:
target_w = int(target_w * scale_factor)
target_h = int(target_h * scale_factor)
target = cr.get_target()
buf = target.create_similar(cairo.CONTENT_COLOR_ALPHA,
target_w, target_h)
ctx = cairo.Context(buf)
ctx.scale(float(target_w) / float(icon_w),
float(target_h) / float(icon_h))
icon.handle.render_cairo(ctx)
del ctx
self._buffers[key] = buf
return buf
def do_paint_below_children(self, cr, damaged_box):
icon = self._get_icon()
if icon is None:
return
icon_buf = self._get_buffer(cr, self._icon_name, icon)
[width, height] = self.get_allocation()
icon_x = (width - icon_buf.get_width()) / 2
icon_y = (height - icon_buf.get_height()) / 2
cr.set_source_surface(icon_buf, icon_x, icon_y)
cr.paint()
if self._badge_name:
badge_icon = self._get_badge_icon()
if badge_icon:
badge_buf = self._get_buffer(cr, self._badge_name, badge_icon, _BADGE_SIZE)
badge_x = (icon_x + icon.badge_x * icon_buf.get_width() -
badge_buf.get_width() / 2)
badge_y = (icon_y + icon.badge_y * icon_buf.get_height() -
badge_buf.get_height() / 2)
cr.set_source_surface(badge_buf, badge_x, badge_y)
cr.paint()
def do_get_content_width_request(self):
icon = self._get_icon()
[width, height] = self._get_size(icon)
if self._badge_name is not None:
# If the badge goes outside the bounding box, add space
# on *both* sides (to keep the main icon centered)
if icon.badge_x < 0.0:
width = int(width * 2 * (1.0 - icon.badge_x))
elif icon.badge_x + _BADGE_SIZE > 1.0:
width = int(width * 2 * (icon.badge_x + _BADGE_SIZE - 1.0))
return (width, width)
def do_get_content_height_request(self, for_width):
icon = self._get_icon()
[width, height] = self._get_size(icon)
if self._badge_name is not None:
if icon.badge_y < 0.0:
height = int(height * 2 * (1.0 - icon.badge_y))
elif icon.badge_y + _BADGE_SIZE > 1.0:
height = int(height * 2 * (icon.badge_y + _BADGE_SIZE - 1.0))
return (height, height)
def do_button_press_event(self, event):
self.emit_activated()
return True
def _motion_notify_event_cb(self, button, event):
if event.detail == hippo.MOTION_DETAIL_ENTER:
self.prelight(True)
elif event.detail == hippo.MOTION_DETAIL_LEAVE:
self.prelight(False)
return False
def prelight(self, enter):
"""
Override this method for adding prelighting behavior.
"""
pass
def get_palette(self):
return self._palette
def set_palette(self, palette):
self._palette = palette
if not self._palette.props.invoker:
self._palette.props.invoker = CanvasInvoker(self)
def set_tooltip(self, text):
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 'theme:' + icon_name
strength = strength + step