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Diffstat (limited to 'desktop/sweetener/icon.py')
| -rw-r--r-- | desktop/sweetener/icon.py | 860 |
1 files changed, 0 insertions, 860 deletions
diff --git a/desktop/sweetener/icon.py b/desktop/sweetener/icon.py deleted file mode 100644 index 3eb0515..0000000 --- a/desktop/sweetener/icon.py +++ /dev/null @@ -1,860 +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. - -""" -A small fixed size picture, typically used to decorate components. - -STABLE. -""" - -import re -import math -import logging - -import gobject -import gtk -import cairo - -from colors import XoColor - - -class Node(object): - - __slots__ = ['prev', 'next', 'me'] - - def __init__(self, prev, me): - self.prev = prev - self.me = me - self.next = None - - -class LRU: - """ - Implementation of a length-limited O(1) LRU queue. - Built for and used by PyPE: - http://pype.sourceforge.net - Copyright 2003 Josiah Carlson. - """ - - def __init__(self, count, pairs=[]): - # pylint: disable=W0102,W0612 - self.count = max(count, 1) - self.d = {} - self.first = None - self.last = None - for key, value in pairs: - self[key] = value - - def __contains__(self, obj): - return obj in self.d - - def __getitem__(self, obj): - a = self.d[obj].me - self[a[0]] = a[1] - return a[1] - - def __setitem__(self, obj, val): - if obj in self.d: - del self[obj] - nobj = Node(self.last, (obj, val)) - if self.first is None: - self.first = nobj - if self.last: - self.last.next = nobj - self.last = nobj - self.d[obj] = nobj - if len(self.d) > self.count: - if self.first == self.last: - self.first = None - self.last = None - return - a = self.first - a.next.prev = None - self.first = a.next - a.next = None - del self.d[a.me[0]] - del a - - def __delitem__(self, obj): - nobj = self.d[obj] - if nobj.prev: - nobj.prev.next = nobj.next - else: - self.first = nobj.next - if nobj.next: - nobj.next.prev = nobj.prev - else: - self.last = nobj.prev - del self.d[obj] - - def __iter__(self): - cur = self.first - while cur != None: - cur2 = cur.next - yield cur.me[1] - cur = cur2 - - def iteritems(self): - cur = self.first - while cur != None: - cur2 = cur.next - yield cur.me - cur = cur2 - - def iterkeys(self): - return iter(self.d) - - def itervalues(self): - for i_, j in self.iteritems(): - yield j - - def keys(self): - return self.d.keys() - - -_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) - - # XXX this is very slow! why? - import rsvg - 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.background_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): - if self.background_color is None: - color = None - else: - color = (self.background_color.red, self.background_color.green, - self.background_color.blue) - return (self.icon_name, self.file_name, self.fill_color, - self.stroke_color, self.badge_name, self.width, self.height, - color, 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, int(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, int(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) - gdkcontext = gtk.gdk.CairoContext(context) - gdkcontext.set_source_pixbuf(pixbuf, 0, 0) - gdkcontext.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) - - 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) - if self.background_color is None: - surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, int(width), - int(height)) - context = cairo.Context(surface) - else: - surface = cairo.ImageSurface(cairo.FORMAT_RGB24, int(width), - int(height)) - context = cairo.Context(surface) - context.set_source_rgb(self.background_color.red, - self.background_color.blue, - self.background_color.green) - context.paint() - - 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) - gdkcontext = gtk.gdk.CairoContext(context) - gdkcontext.set_source_pixbuf(pixbuf, 0, 0) - gdkcontext.paint() - else: - if not sensitive: - pixbuf = self._get_insensitive_pixbuf(pixbuf, widget) - gdkcontext = gtk.gdk.CairoContext(context) - gdkcontext.set_source_pixbuf(pixbuf, 0, 0) - gdkcontext.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' - - def __init__(self, **kwargs): - self._buffer = _IconBuffer() - # HACK: need to keep a reference to the path so it doesn't get garbage - # collected while it's still used if it's a sugar.util.TempFilePath. - # See #1175 - self._file = None - self._alpha = 1.0 - self._scale = 1.0 - - gobject.GObject.__init__(self, **kwargs) - - def get_file(self): - return self._file - - def set_file(self, file_name): - self._file = file_name - self._buffer.file_name = file_name - - file = gobject.property(type=object, setter=set_file, getter=get_file) - - 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): - """ - Parameters - ---------- - requisition : - - Returns - ------- - None - - """ - 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): - """ - Parameters - ---------- - event : - - Returns: - -------- - None - - """ - 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() - - if self._scale != 1.0: - cr.scale(self._scale, self._scale) - - margin = self._buffer.width * (1 - self._scale) / 2 - x, y = x + margin, y + margin - - x = x / self._scale - y = y / self._scale - - cr.set_source_surface(surface, x, y) - - if self._alpha == 1.0: - cr.paint() - else: - cr.paint_with_alpha(self._alpha) - - def set_xo_color(self, value): - """ - Parameters - ---------- - value : - - Returns - ------- - None - - """ - if self._buffer.xo_color != value: - self._buffer.xo_color = value - self.queue_draw() - - xo_color = gobject.property( - type=object, getter=None, setter=set_xo_color) - - def set_fill_color(self, value): - """ - Parameters - ---------- - value : - - Returns - ------- - None - - """ - if self._buffer.fill_color != value: - self._buffer.fill_color = value - self.queue_draw() - - def get_fill_color(self): - """ - Parameters - ---------- - None - - Returns - ------- - fill_color : - - """ - return self._buffer.fill_color - - fill_color = gobject.property( - type=object, getter=get_fill_color, setter=set_fill_color) - - def set_stroke_color(self, value): - """ - Parameters - ---------- - value : - - Returns - ------- - None - - """ - if self._buffer.stroke_color != value: - self._buffer.stroke_color = value - self.queue_draw() - - def get_stroke_color(self): - """ - Parameters - ---------- - None - - Returns - ------- - stroke_color : - - """ - return self._buffer.stroke_color - - stroke_color = gobject.property( - type=object, getter=get_stroke_color, setter=set_stroke_color) - - def set_badge_name(self, value): - """ - Parameters - ---------- - value: - - Returns - ------- - None - - """ - if self._buffer.badge_name != value: - self._buffer.badge_name = value - self.queue_resize() - - def get_badge_name(self): - return self._buffer.badge_name - - badge_name = gobject.property( - type=str, getter=get_badge_name, setter=set_badge_name) - - def set_alpha(self, value): - if self._alpha != value: - self._alpha = value - self.queue_draw() - - alpha = gobject.property( - type=float, setter=set_alpha) - - def set_scale(self, value): - if self._scale != value: - self._scale = value - self.queue_draw() - - scale = gobject.property( - type=float, setter=set_scale) - - -class CellRendererIcon(gtk.GenericCellRenderer): - - __gtype_name__ = 'SugarCellRendererIcon' - - __gsignals__ = { - 'clicked': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE, [object]), - } - - def __init__(self, tree_view): - - self._buffer = _IconBuffer() - self._buffer.cache = True - self._xo_color = None - self._fill_color = None - self._stroke_color = None - self._prelit_fill_color = None - self._prelit_stroke_color = None - - gobject.GObject.__init__(self) - - def set_file_name(self, value): - if self._buffer.file_name != value: - self._buffer.file_name = value - - file_name = gobject.property(type=str, setter=set_file_name) - - def set_icon_name(self, value): - if self._buffer.icon_name != value: - self._buffer.icon_name = value - - icon_name = gobject.property(type=str, setter=set_icon_name) - - def get_xo_color(self): - return self._xo_color - - def set_xo_color(self, value): - self._xo_color = value - - xo_color = gobject.property(type=object, - getter=get_xo_color, setter=set_xo_color) - - def set_fill_color(self, value): - if self._fill_color != value: - self._fill_color = value - - fill_color = gobject.property(type=object, setter=set_fill_color) - - def set_stroke_color(self, value): - if self._stroke_color != value: - self._stroke_color = value - - stroke_color = gobject.property(type=object, setter=set_stroke_color) - - def set_prelit_fill_color(self, value): - if self._prelit_fill_color != value: - self._prelit_fill_color = value - - prelit_fill_color = gobject.property(type=object, - setter=set_prelit_fill_color) - - def set_prelit_stroke_color(self, value): - if self._prelit_stroke_color != value: - self._prelit_stroke_color = value - - prelit_stroke_color = gobject.property(type=object, - setter=set_prelit_stroke_color) - - def set_background_color(self, value): - if self._buffer.background_color != value: - self._buffer.background_color = value - - background_color = gobject.property(type=object, - setter=set_background_color) - - def set_size(self, value): - if self._buffer.width != value: - self._buffer.width = value - self._buffer.height = value - - size = gobject.property(type=object, setter=set_size) - - def on_get_size(self, widget, cell_area): - width = self._buffer.width + self.props.xpad * 2 - height = self._buffer.height + self.props.ypad * 2 - xoffset = 0 - yoffset = 0 - - if width > 0 and height > 0 and cell_area is not None: - - if widget.get_direction() == gtk.TEXT_DIR_RTL: - xoffset = 1.0 - self.props.xalign - else: - xoffset = self.props.xalign - - xoffset = max(xoffset * (cell_area.width - width), 0) - yoffset = max(self.props.yalign * (cell_area.height - height), 0) - - return xoffset, yoffset, width, height - - def on_activate(self, event, widget, path, background_area, cell_area, - flags): - pass - - def on_start_editing(self, event, widget, path, background_area, cell_area, - flags): - pass - - def _is_prelit(self, tree_view): - x, y = tree_view.get_pointer() - x, y = tree_view.convert_widget_to_bin_window_coords(x, y) - pos = tree_view.get_path_at_pos(x, y) - if pos is None: - return False - - path_, column, x, y = pos - - for cell_renderer in column.get_cell_renderers(): - if cell_renderer == self: - cell_x, cell_width = column.cell_get_position(cell_renderer) - if x > cell_x and x < (cell_x + cell_width): - return True - return False - - return False - - def on_render(self, window, widget, background_area, cell_area, - expose_area, flags): - if self._xo_color is not None: - stroke_color = self._xo_color.get_stroke_color() - fill_color = self._xo_color.get_fill_color() - prelit_fill_color = None - prelit_stroke_color = None - else: - stroke_color = self._stroke_color - fill_color = self._fill_color - prelit_fill_color = self._prelit_fill_color - prelit_stroke_color = self._prelit_stroke_color - - has_prelit_colors = None not in [prelit_fill_color, - prelit_stroke_color] - - if flags & gtk.CELL_RENDERER_PRELIT and has_prelit_colors and \ - self._is_prelit(widget): - - self._buffer.fill_color = prelit_fill_color - self._buffer.stroke_color = prelit_stroke_color - else: - self._buffer.fill_color = fill_color - self._buffer.stroke_color = stroke_color - - surface = self._buffer.get_surface() - if surface is None: - return - - xoffset, yoffset, width_, height_ = self.on_get_size(widget, cell_area) - - x = cell_area.x + xoffset - y = cell_area.y + yoffset - - cr = window.cairo_create() - cr.set_source_surface(surface, math.floor(x), math.floor(y)) - cr.rectangle(expose_area) - cr.paint() - - -def get_icon_state(base_name, perc, step=5): - strength = round(perc / step) * step - icon_theme = gtk.icon_theme_get_default() - - while strength <= 100 and strength >= 0: - icon_name = '%s-%03d' % (base_name, strength) - if icon_theme.has_icon(icon_name): - return icon_name - - strength = strength + step - - -def get_icon_file_name(icon_name): - icon_theme = gtk.icon_theme_get_default() - info = icon_theme.lookup_icon(icon_name, gtk.ICON_SIZE_LARGE_TOOLBAR, 0) - if not info: - return None - filename = info.get_filename() - del info - return filename - - -def get_surface(**kwargs): - """Get cached cairo surface. - - Keyword arguments: - icon_name -- name of icon to load, default None - file_name -- path to image file, default None - fill_color -- for svg images, change default fill color - default None - stroke_color -- for svg images, change default stroke color - default None - background_color -- draw background or surface will be transparent - default None - badge_name -- name of icon which will be drawn on top of - original image, default None - width -- change image width, default None - height -- change image height, default None - cache -- if image is svg, keep svg file content for later - scale -- scale image, default 1.0 - - Return: cairo surface or None if image was not found - - """ - icon = _IconBuffer() - for key, value in kwargs.items(): - icon.__setattr__(key, value) - return icon.get_surface() |