diff options
Diffstat (limited to 'port/pixbuf.py')
| -rw-r--r-- | port/pixbuf.py | 213 |
1 files changed, 0 insertions, 213 deletions
diff --git a/port/pixbuf.py b/port/pixbuf.py deleted file mode 100644 index ba6d0f5..0000000 --- a/port/pixbuf.py +++ /dev/null @@ -1,213 +0,0 @@ -# This program is free software; you can redistribute it and/or modify -# it under the terms of the GNU General Public License as published by -# the Free Software Foundation; either version 2 of the License, or -# (at your option) any later version. -# -# This program 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 General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program; if not, write to the Free Software -# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - -"""gtk.gdk.Pixbuf extensions""" - -import re -import os -import cStringIO -import gtk -import rsvg -import cairo -import logging - -from sugar.graphics.xocolor import XoColor -from sugar.util import LRU - -def to_file(pixbuf): - """Convert pixbuf object to file object""" - - def push(pixbuf, buffer): - buffer.write(pixbuf) - - buffer = cStringIO.StringIO() - pixbuf.save_to_callback(push, 'png', user_data=buffer) - buffer.seek(0) - - return buffer - -def to_str(pixbuf): - """Convert pixbuf object to string""" - return to_file(pixbuf).getvalue() - -def from_str(str): - """Convert string to pixbuf object""" - - loader = gtk.gdk.pixbuf_loader_new_with_mime_type('image/png') - loader.write(str) - loader.close() - - return loader.get_pixbuf() - -def from_svg_at_size(filename=None, width=None, height=None, handle=None, - keep_ratio=True): - """Scale and load SVG into pixbuf""" - - if not handle: - handle = rsvg.Handle(filename) - - dimensions = handle.get_dimension_data() - icon_width = dimensions[0] - icon_height = dimensions[1] - - if icon_width != width or icon_height != height: - ratio_width = float(width) / icon_width - ratio_height = float(height) / icon_height - - if keep_ratio: - ratio = min(ratio_width, ratio_height) - if ratio_width != ratio: - ratio_width = ratio - width = int(icon_width * ratio) - elif ratio_height != ratio: - ratio_height = ratio - height = int(icon_height * ratio) - else: - ratio_width = 1 - ratio_height = 1 - - surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, width, height) - context = cairo.Context(surface) - context.scale(ratio_width, ratio_height) - handle.render_cairo(context) - - loader = gtk.gdk.pixbuf_loader_new_with_mime_type('image/png') - surface.write_to_png(loader) - loader.close() - - return loader.get_pixbuf() - -def sugar_icon(file_name=None, icon_name=None, - width=None, height=None, - color=None, - insensitive_widget=None): - """Load sugar icon into pixbuf - - NOTE: Function can load all image formats but makes sense only for SVG - (due to color argument, see load_svg()) - - NOTE: Function caches results - - Arguments: - file_name path to filename with image - (mutually exclusive for icon_name) - icon_name name of icon - (mutually exclusive for icon_name) - width width of final image - height height of final image - color defines stroke and fill colors for final SVG image - in string notion, could be: - * tuple of (stroke_color, fill_color) - * XoColor - * scalar value for stroke and fill colors - insensitive_widget render icon in insensitive mode - """ - def load_svg(): - entities = {} - if fill_color: - entities['fill_color'] = fill_color - if stroke_color: - entities['stroke_color'] = stroke_color - - f = open(icon_filename, 'r') - icon = f.read() - f.close() - - for entity, value in entities.items(): - xml = '<!ENTITY %s "%s">' % (entity, value) - icon = re.sub('<!ENTITY %s .*>' % entity, xml, icon) - - return rsvg.Handle(data=icon) - - def get_insensitive_pixbuf(): - if not (insensitive_widget and insensitive_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 = insensitive_widget.style.render_icon(icon_source, - insensitive_widget.get_direction(), gtk.STATE_INSENSITIVE, -1, - insensitive_widget, "sugar-icon") - - return pixbuf - - def get_cache_key(): - return (icon_filename, fill_color, stroke_color, width, height, - insensitive_widget is None) - - if isinstance(color, XoColor): - stroke_color = color.get_stroke_color() - fill_color = color.get_fill_color() - elif isinstance(color, tuple): - stroke_color = color[0] - fill_color = color[1] - else: - stroke_color = color - fill_color = color - - if file_name: - icon_filename = file_name - elif icon_name: - theme = gtk.icon_theme_get_default() - info = theme.lookup_icon(icon_name, width or 50, 0) - if info: - icon_filename = info.get_filename() - del info - else: - logging.warning('No icon with the name %s ' - 'was found in the theme.' % icon_name) - else: - return None - - cache_key = get_cache_key() - if cache_key in _sugar_icon_cache: - return _sugar_icon_cache[cache_key] - - logging.debug('sugar_icon: file_name=%s icon_name=%s width=%s height=%s ' \ - 'color=%s' % (file_name, icon_name, width, height, color)) - - is_svg = icon_filename.endswith('.svg') - - if is_svg: - handle = load_svg() - if width and height: - pixbuf = from_svg_at_size(handle=handle, width=width, height=height, - keep_ratio=True) - else: - pixbuf = handle.get_pixbuf() - else: - if width and height: - pixbuf = gtk.gdk.pixbuf_new_from_file_at_size(icon_filename, - width, height) - else: - pixbuf = gtk.gdk.pixbuf_new_from_file(icon_filename) - - if insensitive_widget: - pixbuf = get_insensitive_pixbuf() - - _sugar_icon_cache[cache_key] = pixbuf - - return pixbuf - -_sugar_icon_cache = LRU(50) |