From eaef567cabc5c0dda9706faa0e17e20909131ade Mon Sep 17 00:00:00 2001
From: simpoir <simpoir@Bob.(none)>
Date: Fri, 30 Jan 2009 04:14:48 +0000
Subject: ajout initial du tree jhbuild [jhbuild base]

---
(limited to 'src/sugar/graphics/icon.py')

diff --git a/src/sugar/graphics/icon.py b/src/sugar/graphics/icon.py
new file mode 100644
index 0000000..1608bac
--- /dev/null
+++ b/src/sugar/graphics/icon.py
@@ -0,0 +1,872 @@
+# 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 hippo
+import cairo
+
+from sugar.graphics.xocolor import XoColor
+from sugar.util import LRU
+
+_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)
+
+        import rsvg # XXX this is very slow!  why?
+        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.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):
+        return (self.icon_name, self.file_name, self.fill_color,
+                self.stroke_color, self.badge_name, self.width, self.height,
+                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, 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, 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)
+            surface = hippo.cairo_surface_from_gdk_pixbuf(pixbuf)
+            context.set_source_surface(surface, 0, 0)
+            context.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)
+
+        # 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 = 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)
+        surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, width, height)
+
+        context = cairo.Context(surface)
+        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)
+
+                pixbuf_surface = hippo.cairo_surface_from_gdk_pixbuf(pixbuf)
+                context.set_source_surface(pixbuf_surface, 0, 0)
+                context.paint()
+        else:
+            if not sensitive:
+                pixbuf = self._get_insensitive_pixbuf(pixbuf, widget)
+            pixbuf_surface = hippo.cairo_surface_from_gdk_pixbuf(pixbuf)
+            context.set_source_surface(pixbuf_surface, 0, 0)
+            context.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()
+
+        gobject.GObject.__init__(self, **kwargs)
+
+    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()
+        cr.set_source_surface(surface, x, y)
+        cr.paint()
+
+    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)
+
+class CanvasIcon(hippo.CanvasBox, hippo.CanvasItem):
+    __gtype_name__ = 'CanvasIcon'
+
+    def __init__(self, **kwargs):
+        from sugar.graphics.palette import CanvasInvoker
+
+        self._buffer = _IconBuffer()
+        self._palette_invoker = CanvasInvoker()
+
+        hippo.CanvasBox.__init__(self, **kwargs)
+
+        self._palette_invoker.attach(self)
+
+        self.connect('destroy', self.__destroy_cb)
+
+    def __destroy_cb(self, icon):
+        if self._palette_invoker is not None:
+            self._palette_invoker.detach()
+
+    def set_file_name(self, value):
+        """
+        Parameters
+        ----------
+        value:
+
+        Returns
+        -------
+        None
+
+        \"\"\"
+
+        """
+        if self._buffer.file_name != value:
+            self._buffer.file_name = value
+            self.emit_paint_needed(0, 0, -1, -1)
+
+    def get_file_name(self):
+        """
+        Parameters
+        ----------
+        None
+
+        Returns
+        -------
+        file name :
+
+        """
+        return self._buffer.file_name
+
+    file_name = gobject.property(
+        type=object, getter=get_file_name, setter=set_file_name)
+
+    def set_icon_name(self, value):
+        """
+        Parameters
+        ----------
+        value:
+
+        Returns
+        -------
+        None
+
+        """
+        if self._buffer.icon_name != value:
+            self._buffer.icon_name = value
+            self.emit_paint_needed(0, 0, -1, -1)
+
+    def get_icon_name(self):
+        """
+        Parameters
+        ----------
+        None
+
+        Returns
+        -------
+        icon name :
+
+        """
+        return self._buffer.icon_name
+
+    icon_name = gobject.property(
+        type=object, getter=get_icon_name, setter=set_icon_name)
+
+    def set_xo_color(self, value):
+        """
+        Parameters
+        ----------
+        value:
+
+        Returns
+        -------
+        None
+
+        """
+        if self._buffer.xo_color != value:
+            self._buffer.xo_color = value
+            self.emit_paint_needed(0, 0, -1, -1)
+
+    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.emit_paint_needed(0, 0, -1, -1)
+
+    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.emit_paint_needed(0, 0, -1, -1)
+
+    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_size(self, value):
+        """
+        Parameters
+        ----------
+        value:
+
+        Returns
+        -------
+        None
+
+        """
+        if self._buffer.width != value:
+            self._buffer.width = value
+            self._buffer.height = value
+            self.emit_request_changed()
+
+    def get_size(self):
+        """
+        Parameters
+        ----------
+        None
+
+        Returns
+        -------
+        size :
+
+        """
+        return self._buffer.width
+
+    size = gobject.property(
+        type=int, getter=get_size, setter=set_size)
+
+    def set_scale(self, value):
+        """
+        Parameters
+        ----------
+        value:
+
+        Returns
+        -------
+        None
+
+        """
+        logging.warning(
+            'CanvasIcon: the scale parameter is currently unsupported')
+        if self._buffer.scale != value:
+            self._buffer.scale = value
+            self.emit_request_changed()
+
+    def get_scale(self):
+        """
+        Parameters
+        ----------
+        None
+
+        Returns
+        -------
+        scale :
+
+        """
+        return self._buffer.scale
+
+    scale = gobject.property(
+        type=float, getter=get_scale, setter=set_scale)
+
+    def set_cache(self, value):
+        """
+        Parameters
+        ----------
+        cache
+
+        Returns
+        -------
+        None
+
+        """
+        self._buffer.cache = value
+
+    def get_cache(self):
+        """
+        Parameters
+        ----------
+        None
+
+        Returns
+        -------
+        cache :
+
+        """
+        return self._buffer.cache
+
+    cache = gobject.property(
+        type=bool, default=False, getter=get_cache, setter=set_cache)
+
+    def set_badge_name(self, value):
+        """
+        Parameters
+        ----------
+        value :
+
+        Returns
+        -------
+        None
+
+        """
+        if self._buffer.badge_name != value:
+            self._buffer.badge_name = value
+            self.emit_paint_needed(0, 0, -1, -1)
+
+    def get_badge_name(self):
+        """
+        Parameters
+        ----------
+        None
+
+        Returns
+        -------
+        badge name :
+
+        """
+        return self._buffer.badge_name
+
+    badge_name = gobject.property(
+        type=object, getter=get_badge_name, setter=set_badge_name)
+
+    def do_paint_below_children(self, cr, damaged_box):
+        """
+        Parameters
+        ----------
+        cr :
+
+        damaged_box :
+
+        Returns
+        -------
+        None
+
+        """
+        surface = self._buffer.get_surface()
+        if surface:
+            width, height = self.get_allocation()
+
+            x = (width - surface.get_width()) / 2
+            y = (height - surface.get_height()) / 2
+
+            cr.set_source_surface(surface, x, y)
+            cr.paint()
+
+    def do_get_content_width_request(self):
+        """
+        Parameters
+        ----------
+        None
+
+        Returns
+        -------
+        width :
+
+        """
+        surface = self._buffer.get_surface()
+        if surface:
+            size = surface.get_width()
+        elif self._buffer.width:
+            size = self._buffer.width
+        else:
+            size = 0
+
+        return size, size
+
+    def do_get_content_height_request(self, for_width):
+        surface = self._buffer.get_surface()
+        if surface:
+            size = surface.get_height()
+        elif self._buffer.height:
+            size = self._buffer.height
+        else:
+            size = 0
+
+        return size, size
+
+    def do_button_press_event(self, event):
+        self.emit_activated()
+        return True
+
+    def create_palette(self):
+        return None
+
+    def get_palette(self):
+        return self._palette_invoker.palette
+
+    def set_palette(self, palette):
+        self._palette_invoker.palette = palette
+
+    palette = gobject.property(
+        type=object, setter=set_palette, getter=get_palette)
+
+    def get_palette_invoker(self):
+        return self._palette_invoker
+    
+    def set_palette_invoker(self, palette_invoker):
+        self._palette_invoker.detach()
+        self._palette_invoker = palette_invoker
+
+    palette_invoker = gobject.property(
+        type=object, setter=set_palette_invoker, getter=get_palette_invoker)
+
+    def set_tooltip(self, text):
+        from sugar.graphics.palette import Palette
+
+        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 and strength >= 0:
+        icon_name = '%s-%03d' % (base_name, strength)
+        if icon_theme.has_icon(icon_name):
+            return icon_name
+
+        strength = strength + step
--
cgit v0.9.1