100 lines
3.6 KiB
Python
100 lines
3.6 KiB
Python
# Copyright (C) 2013, One Laptop Per Child
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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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from gi.repository import Gtk
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from sugar3.graphics.icon import get_surface
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from sugar3.graphics import style
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class ProgressIcon(Gtk.DrawingArea):
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"""Display the progress filling the icon.
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This class is compatible with the sugar3.graphics.icon.Icon class.
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Call update(progress) with the new progress to update the icon.
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The direction defaults to 'vertical', in which case the icon is
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filled from bottom to top. If direction is set to 'horizontal',
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it will be filled from right to left or from left to right,
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depending on the system's language RTL setting.
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"""
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def __init__(self, icon_name, pixel_size, stroke_color, fill_color,
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direction='vertical'):
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Gtk.DrawingArea.__init__(self)
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self._icon_name = icon_name
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self._direction = direction
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self._progress = 0
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self._stroke = get_surface(
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icon_name=icon_name, width=pixel_size, height=pixel_size,
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stroke_color=stroke_color,
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fill_color=style.COLOR_TRANSPARENT.get_svg())
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self._fill = get_surface(
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icon_name=icon_name, width=pixel_size, height=pixel_size,
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stroke_color=style.COLOR_TRANSPARENT.get_svg(),
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fill_color=fill_color)
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self.connect("draw", self.__draw_cb)
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def __draw_cb(self, widget, cr):
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allocation = widget.get_allocation()
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# Center the graphic in the allocated space.
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margin_x = (allocation.width - self._stroke.get_width()) / 2
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margin_y = (allocation.height - self._stroke.get_height()) / 2
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cr.translate(margin_x, margin_y)
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# Paint the fill, clipping it by the progress.
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x_, y_ = 0, 0
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width, height = self._stroke.get_width(), self._stroke.get_height()
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if self._direction == 'vertical': # vertical direction, bottom to top
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y_ = self._stroke.get_height()
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height *= self._progress * -1
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else:
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rtl_direction = \
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Gtk.Widget.get_default_direction() == Gtk.TextDirection.RTL
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if rtl_direction: # horizontal direction, right to left
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x_ = self._stroke.get_width()
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width *= self._progress * -1
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else: # horizontal direction, left to right
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width *= self._progress
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cr.rectangle(x_, y_, width, height)
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cr.clip()
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cr.set_source_surface(self._fill, 0, 0)
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cr.paint()
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# Paint the stroke over the fill.
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cr.reset_clip()
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cr.set_source_surface(self._stroke, 0, 0)
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cr.paint()
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def do_get_preferred_width(self):
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width = self._stroke.get_width()
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return (width, width)
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def do_get_preferred_height(self):
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height = self._stroke.get_height()
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return (height, height)
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def update(self, progress):
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self._progress = progress
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self.queue_draw()
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