cell_renderer_image.py 5.13 KB
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# -*- coding:utf-8 -*-
## src/cell_renderer_image.py
##
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## Copyright (C) 2003-2017 Yann Leboulanger <asterix AT lagaule.org>
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## Copyright (C) 2005 Vincent Hanquez <tab AT snarc.org>
## Copyright (C) 2005-2007 Nikos Kouremenos <kourem AT gmail.com>
## Copyright (C) 2006 Travis Shirk <travis AT pobox.com>
##
## This file is part of Gajim.
##
## Gajim 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; version 3 only.
##
## Gajim 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 Gajim. If not, see <http://www.gnu.org/licenses/>.
##


import gtk
import gobject

class CellRendererImage(gtk.GenericCellRenderer):

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    __gproperties__ = {
            'image': (gobject.TYPE_OBJECT, 'Image',
                    'Image', gobject.PARAM_READWRITE),
    }

    def __init__(self, col_index, tv_index):
        self.__gobject_init__()
        self.image = None
        self.col_index = col_index
        self.tv_index = tv_index
        self.iters = {}

    def do_set_property(self, pspec, value):
        setattr(self, pspec.name, value)

    def do_get_property(self, pspec):
        return getattr(self, pspec.name)

    def func(self, model, path, iter_, image_tree):
        image, tree = image_tree
        if model.get_value(iter_, self.tv_index) != image:
            return
        self.redraw = 1
        col = tree.get_column(self.col_index)
        cell_area = tree.get_cell_area(path, col)

        tree.queue_draw_area(cell_area.x, cell_area.y,
                                cell_area.width, cell_area.height)

    def animation_timeout(self, tree, image):
        if image.get_storage_type() != gtk.IMAGE_ANIMATION:
            return
        self.redraw = 0
        iter_ = self.iters[image]
        iter_.advance()
        model = tree.get_model()
        if model:
            model.foreach(self.func, (image, tree))
        if self.redraw:
            gobject.timeout_add(iter_.get_delay_time(),
                            self.animation_timeout, tree, image)
        elif image in self.iters:
            del self.iters[image]

    def on_render(self, window, widget, background_area, cell_area,
                                    expose_area, flags):
        if not self.image:
            return
        pix_rect = gtk.gdk.Rectangle()
        pix_rect.x, pix_rect.y, pix_rect.width, pix_rect.height = \
                self.on_get_size(widget, cell_area)

        pix_rect.x += cell_area.x
        pix_rect.y += cell_area.y
        pix_rect.width -= 2 * self.get_property('xpad')
        pix_rect.height -= 2 * self.get_property('ypad')

        draw_rect = cell_area.intersect(pix_rect)
        draw_rect = expose_area.intersect(draw_rect)

        if self.image.get_storage_type() == gtk.IMAGE_ANIMATION:
            if self.image not in self.iters:
                if not isinstance(widget, gtk.TreeView):
                    return
                animation = self.image.get_animation()
                iter_ = animation.get_iter()
                self.iters[self.image] = iter_
                gobject.timeout_add(iter_.get_delay_time(),
                        self.animation_timeout, widget, self.image)

            pix = self.iters[self.image].get_pixbuf()
        elif self.image.get_storage_type() == gtk.IMAGE_PIXBUF:
            pix = self.image.get_pixbuf()
        else:
            return
        if draw_rect.x < 1:
            return
        window.draw_pixbuf(widget.style.black_gc, pix,
                                draw_rect.x - pix_rect.x,
                                draw_rect.y - pix_rect.y,
                                draw_rect.x, draw_rect.y,
                                draw_rect.width, draw_rect.height,
                                gtk.gdk.RGB_DITHER_NONE, 0, 0)

    def on_get_size(self, widget, cell_area):
        if not self.image:
            return 0, 0, 0, 0
        if self.image.get_storage_type() == gtk.IMAGE_ANIMATION:
            animation = self.image.get_animation()
            pix = animation.get_iter().get_pixbuf()
        elif self.image.get_storage_type() == gtk.IMAGE_PIXBUF:
            pix = self.image.get_pixbuf()
        else:
            return 0, 0, 0, 0
        pixbuf_width = pix.get_width()
        pixbuf_height = pix.get_height()
        calc_width = self.get_property('xpad') * 2 + pixbuf_width
        calc_height = self.get_property('ypad') * 2 + pixbuf_height
        x_offset = 0
        y_offset = 0
        if cell_area and pixbuf_width > 0 and pixbuf_height > 0:
            x_offset = self.get_property('xalign') * \
                            (cell_area.width - calc_width - \
                            self.get_property('xpad'))
            y_offset = self.get_property('yalign') * \
                            (cell_area.height - calc_height - \
                            self.get_property('ypad'))
        return x_offset, y_offset, calc_width, calc_height