697 lines
24 KiB
Python
697 lines
24 KiB
Python
# Copyright (C) 2006-2007 Red Hat, Inc.
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#
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# This library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2 of the License, or (at your option) any later version.
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#
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# This library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public
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# License along with this library; if not, write to the
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# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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# Boston, MA 02111-1307, USA.
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import os
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import re
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import time
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import logging
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import gobject
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import gtk
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import hippo
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import rsvg
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import cairo
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from sugar.graphics.style import Color
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from sugar.graphics.xocolor import XoColor
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from sugar.graphics import style
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from sugar.graphics.palette import Palette, CanvasInvoker
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_BADGE_SIZE = 0.45
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_svg_loader = None
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def _get_svg_loader():
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global _svg_loader
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if _svg_loader == None:
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_svg_loader = _SVGLoader()
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return _svg_loader
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class _SVGLoader(object):
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def load(self, file_name, entities):
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icon_file = open(file_name, 'r')
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data = icon_file.read()
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icon_file.close()
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for entity, value in entities.items():
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xml = '<!ENTITY %s "%s">' % (entity, value)
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data = re.sub('<!ENTITY %s .*>' % entity, xml, data)
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return rsvg.Handle(data=data)
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class _IconInfo(object):
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def __init__(self):
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self.file_name = None
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self.attach_x = 0
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self.attach_y = 0
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class _IconBuffer(object):
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def __init__(self):
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self._svg_loader = _get_svg_loader()
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self._surface = None
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self.icon_name = None
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self.file_name = None
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self.fill_color = None
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self.stroke_color = None
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self.badge_name = None
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self.width = None
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self.height = None
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def _load_svg(self, file_name):
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entities = {}
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if self.fill_color:
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entities['fill_color'] = self.fill_color
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if self.stroke_color:
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entities['stroke_color'] = self.stroke_color
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return self._svg_loader.load(file_name, entities)
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def _get_attach_points(self, info, size_request):
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attach_points = info.get_attach_points()
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if attach_points:
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attach_x = float(attach_points[0][0]) / size_request
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attach_y = float(attach_points[0][1]) / size_request
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else:
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attach_x = attach_y = 0
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return attach_x, attach_y
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def _get_icon_info(self):
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icon_info = _IconInfo()
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if self.file_name:
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icon_info.file_name = self.file_name
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elif self.icon_name:
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theme = gtk.icon_theme_get_default()
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size = 50
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if self.width != None:
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size = self.width
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info = theme.lookup_icon(self.icon_name, size, 0)
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if info:
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attach_x, attach_y = self._get_attach_points(info, size)
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icon_info.file_name = info.get_filename()
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icon_info.attach_x = attach_x
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icon_info.attach_y = attach_y
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return icon_info
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def _draw_badge(self, context, size):
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theme = gtk.icon_theme_get_default()
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badge_info = theme.lookup_icon(self.badge_name, size, 0)
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if badge_info:
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badge_file_name = badge_info.get_filename()
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if badge_file_name.endswith('.svg'):
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handle = self._svg_loader.load(badge_file_name, {})
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handle.render_cairo(context)
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else:
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pixbuf = gtk.gdk.pixbuf_new_from_file(badge_file_name)
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surface = hippo.cairo_surface_from_gdk_pixbuf(pixbuf)
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context.set_source_surface(surface, 0, 0)
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context.paint()
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def _get_size(self, icon_width, icon_height):
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if self.width is not None and self.height is not None:
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width = self.width
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height = self.height
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else:
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width = icon_width
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height = icon_height
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return width, height
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def get_surface(self):
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if self._surface is not None:
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return self._surface
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icon_info = self._get_icon_info()
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if icon_info.file_name is None:
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return None
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is_svg = icon_info.file_name.endswith('.svg')
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if is_svg:
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handle = self._load_svg(icon_info.file_name)
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dimensions = handle.get_dimension_data()
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icon_width = int(dimensions[0])
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icon_height = int(dimensions[1])
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else:
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pixbuf = gtk.gdk.pixbuf_new_from_file(file_name)
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icon_width = surface.get_width()
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icon_height = surface.get_height()
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badge_size = int(_BADGE_SIZE * icon_width)
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badge_x = icon_info.attach_x * icon_width - badge_size / 2
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badge_y = icon_info.attach_y * icon_height - badge_size / 2
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icon_padding = 0
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if self.badge_name:
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if badge_x < 0 or badge_y < 0:
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icon_padding = max(-badge_x, -badge_y)
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elif badge_x + badge_size > icon_width or \
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badge_y + badge_size > icon_height:
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x_padding = icon_width - badge_x - badge_size
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y_padding = icon_height - badge_y - badge_size
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icon_padding = max(x_padding, y_padding)
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width, height = self._get_size(icon_width, icon_height)
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surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, width, height)
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context = cairo.Context(surface)
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context.scale(float(width) / (icon_width + icon_padding * 2),
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float(height) / (icon_height + icon_padding * 2))
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context.save()
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context.translate(icon_padding, icon_padding)
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if is_svg:
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handle.render_cairo(context)
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else:
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pixbuf_surface = hippo.cairo_surface_from_gdk_pixbuf(pixbuf)
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context.set_source_surface(pixbuf_surface, 0, 0)
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context.paint()
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if self.badge_name:
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context.restore()
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context.translate(badge_x, badge_y)
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self._draw_badge(context, badge_size)
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self._surface = surface
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return surface
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def invalidate(self):
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self._surface = None
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class Icon(gtk.Image):
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__gtype_name__ = 'SugarIcon'
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__gproperties__ = {
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'xo-color' : (object, None, None,
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gobject.PARAM_WRITABLE),
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'fill-color' : (object, None, None,
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gobject.PARAM_READWRITE),
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'stroke-color' : (object, None, None,
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gobject.PARAM_READWRITE),
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'badge-name' : (str, None, None, None,
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gobject.PARAM_READWRITE)
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}
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def __init__(self, **kwargs):
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self._buffer = _IconBuffer()
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gobject.GObject.__init__(self, **kwargs)
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def _sync_image_properties(self):
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if self._buffer.icon_name != self.props.icon_name:
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self._buffer.icon_name = self.props.icon_name
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self._buffer.invalidate()
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if self._buffer.file_name != self.props.file:
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self._buffer.file_name = self.props.file
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self._buffer.invalidate()
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width, height = gtk.icon_size_lookup(self.props.icon_size)
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if self._buffer.width != width and self._buffer.height != height:
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self._buffer.width = width
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self._buffer.height = height
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self._buffer.invalidate()
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def _icon_size_changed_cb(self, image, pspec):
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self._buffer.icon_size = self.props.icon_size
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self._buffer.invalidate()
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def _icon_name_changed_cb(self, image, pspec):
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self._buffer.icon_name = self.props.icon_name
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self._buffer.invalidate()
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def _file_changed_cb(self, image, pspec):
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self._buffer.file_name = self.props.file
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self._buffer.invalidate()
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def _update_buffer_size(self):
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width, height = gtk.icon_size_lookup(self.props.icon_size)
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self._buffer.width = width
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self._buffer.height = height
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self._buffer.invalidate()
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def do_expose_event(self, event):
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self._sync_image_properties()
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surface = self._buffer.get_surface()
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if surface is not None:
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cr = self.window.cairo_create()
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x = self.allocation.x
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y = self.allocation.y
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cr.set_source_surface(surface, x, y)
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cr.paint()
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def do_set_property(self, pspec, value):
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if pspec.name == 'xo-color':
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self.props.fill_color = value.get_fill_color()
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self.props.stroke_color = value.get_stroke_color()
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elif pspec.name == 'fill-color':
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self._buffer.fill_color = value
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self._buffer.invalidate()
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elif pspec.name == 'stroke-color':
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self._buffer.fill_color = value
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self._buffer.invalidate()
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elif pspec.name == 'badge-name':
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self._buffer.badge_name = value
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self._buffer.invalidate()
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else:
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gtk.Image.do_set_property(self, pspec, value)
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def do_get_property(self, pspec):
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if pspec.name == 'fill-color':
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return self._buffer.fill_color
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elif pspec.name == 'stroke-color':
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return self._buffer.stroke_color
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elif pspec.name == 'badge-name':
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return self._buffer.badge_name
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else:
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return gtk.Image.do_get_property(self, pspec)
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_ICON_REQUEST_SIZE = 50
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class _IconCacheIcon:
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def __init__(self, name, fill_color, stroke_color, now):
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self.last_used = now
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self.usage_count = 1
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self.badge_x = 1.0 - _BADGE_SIZE / 2
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self.badge_y = 1.0 - _BADGE_SIZE / 2
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if name[0:6] == "theme:":
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info = gtk.icon_theme_get_default().lookup_icon(
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name[6:], _ICON_REQUEST_SIZE, 0)
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if not info:
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raise ValueError("Icon '" + name + "' not found.")
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fname = info.get_filename()
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attach_points = info.get_attach_points()
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if attach_points is not None:
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self.badge_x = float(attach_points[0][0]) / _ICON_REQUEST_SIZE
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self.badge_y = float(attach_points[0][1]) / _ICON_REQUEST_SIZE
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del info
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else:
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fname = name
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self.handle = self._read_icon_data(fname, fill_color, stroke_color)
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def _read_icon_data(self, filename, fill_color, stroke_color):
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icon_file = open(filename, 'r')
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data = icon_file.read()
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icon_file.close()
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if fill_color:
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entity = '<!ENTITY fill_color "%s">' % fill_color
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data = re.sub('<!ENTITY fill_color .*>', entity, data)
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if stroke_color:
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entity = '<!ENTITY stroke_color "%s">' % stroke_color
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data = re.sub('<!ENTITY stroke_color .*>', entity, data)
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self.data_size = len(data)
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return rsvg.Handle(data=data)
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class _IconCache:
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_CACHE_MAX = 50000 # in bytes
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def __init__(self):
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self._icons = {}
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self._cache_size = 0
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def _cache_cleanup(self, key, now):
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while self._cache_size > self._CACHE_MAX:
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evict_key = None
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oldest_key = None
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oldest_time = now
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for icon_key, icon in self._icons.items():
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# Don't evict the icon we are about to use if it's in the cache
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if icon_key == key:
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continue
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# evict large icons first
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if icon.data_size > self._CACHE_MAX:
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evict_key = icon_key
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break
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# evict older icons next; those used over 2 minutes ago
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if icon.last_used < now - 120:
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evict_key = icon_key
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break
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# otherwise, evict the oldest
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if oldest_time > icon.last_used:
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oldest_time = icon.last_used
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oldest_key = icon_key
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# If there's nothing specific to evict, try evicting
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# the oldest thing
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if not evict_key:
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if not oldest_key:
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break
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evict_key = oldest_key
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self._cache_size -= self._icons[evict_key].data_size
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del self._icons[evict_key]
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def get_icon(self, name, fill_color, stroke_color):
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if not name:
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return None
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if fill_color or stroke_color:
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key = (name, fill_color, stroke_color)
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else:
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key = name
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# If we're over the cache limit, evict something from the cache
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now = time.time()
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self._cache_cleanup(key, now)
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if self._icons.has_key(key):
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icon = self._icons[key]
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icon.usage_count += 1
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icon.last_used = now
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else:
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icon = _IconCacheIcon(name, fill_color, stroke_color, now)
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self._icons[key] = icon
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self._cache_size += icon.data_size
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return icon
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class CanvasIcon(hippo.CanvasBox, hippo.CanvasItem):
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__gtype_name__ = 'CanvasIcon'
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__gproperties__ = {
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'icon-name' : (str, None, None, None,
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gobject.PARAM_READWRITE),
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'xo-color' : (object, None, None,
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gobject.PARAM_WRITABLE),
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'fill-color' : (object, None, None,
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gobject.PARAM_READWRITE),
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'stroke-color' : (object, None, None,
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gobject.PARAM_READWRITE),
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'size' : (int, None, None, 0, 1024, 0,
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gobject.PARAM_READWRITE),
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'scale' : (int, None, None, 0, 1024, 0,
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gobject.PARAM_READWRITE),
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'cache' : (bool, None, None, False,
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gobject.PARAM_READWRITE),
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'active' : (bool, None, None, True,
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gobject.PARAM_READWRITE),
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'badge-name' : (str, None, None, None,
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gobject.PARAM_READWRITE)
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}
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_cache = _IconCache()
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def __init__(self, **kwargs):
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self._buffers = {}
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self._cur_buffer = None
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self._size = 0
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self._scale = 0
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self._fill_color = None
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self._stroke_color = None
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self._icon_name = None
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self._cache = False
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self._icon = None
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self._active = True
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self._palette = None
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self._badge_name = None
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self._badge_icon = None
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hippo.CanvasBox.__init__(self, **kwargs)
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self.connect_after('motion-notify-event', self._motion_notify_event_cb)
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def _clear_buffers(self):
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icon_key = self._get_current_buffer_key(self._icon_name)
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badge_key = None
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if self._badge_name:
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badge_key = self._get_current_buffer_key(self._badge_name)
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for key in self._buffers.keys():
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if key != icon_key:
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if not badge_key or (key != badge_key):
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del self._buffers[key]
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self._buffers = {}
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def do_set_property(self, pspec, value):
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if pspec.name == 'icon-name':
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if self._icon_name != value and not self._cache:
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self._clear_buffers()
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self._icon_name = value
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self._icon = None
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self.emit_paint_needed(0, 0, -1, -1)
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elif pspec.name == 'xo-color':
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self.props.fill_color = style.Color(value.get_fill_color())
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self.props.stroke_color = style.Color(value.get_stroke_color())
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elif pspec.name == 'fill-color':
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if self._fill_color != value:
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if not self._cache:
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self._clear_buffers()
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self._fill_color = value
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self._icon = None
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self._badge_icon = None
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self.emit_paint_needed(0, 0, -1, -1)
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elif pspec.name == 'stroke-color':
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if self._stroke_color != value:
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if not self._cache:
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self._clear_buffers()
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self._stroke_color = value
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self._icon = None
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self._badge_icon = None
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self.emit_paint_needed(0, 0, -1, -1)
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elif pspec.name == 'size':
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if self._size != value and not self._cache:
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self._clear_buffers()
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self._size = value
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self.emit_request_changed()
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elif pspec.name == 'scale':
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if self._scale != value and not self._cache:
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self._clear_buffers()
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self._scale = value
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self.emit_request_changed()
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elif pspec.name == 'cache':
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self._cache = value
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elif pspec.name == 'active':
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if self._active != value:
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if not self._cache:
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self._clear_buffers()
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self._active = value
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self._icon = None
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self.emit_paint_needed(0, 0, -1, -1)
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elif pspec.name == 'badge-name':
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if self._badge_name != value and not self._cache:
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self._clear_buffers()
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self._badge_name = value
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self._badge_icon = None
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self.emit_paint_needed(0, 0, -1, -1)
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def _choose_colors(self):
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fill_color = None
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stroke_color = None
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if self._active:
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if self._fill_color:
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|
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
|