path: root/src/jarabe/journal/expandedentry.py

# Copyright (C) 2007, One Laptop Per Child
#
# 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

import logging
from gettext import gettext as _
import StringIO

import hippo
import cairo
import gobject
import gtk
import cjson

from sugar.graphics import style
from sugar.graphics.icon import CanvasIcon
from sugar.graphics.xocolor import XoColor
from sugar.graphics.entry import CanvasEntry
from sugar.graphics.canvastextview import CanvasTextView

from jarabe.journal.keepicon import KeepIcon
from jarabe.journal.palettes import ObjectPalette, BuddyPalette
from jarabe.journal import misc
from jarabe.journal import model

class Separator(hippo.CanvasBox, hippo.CanvasItem):
    def __init__(self, orientation):
        hippo.CanvasBox.__init__(self,
                background_color=style.COLOR_PANEL_GREY.get_int())

        if orientation == hippo.ORIENTATION_VERTICAL:
            self.props.box_width = style.LINE_WIDTH
        else:
            self.props.box_height = style.LINE_WIDTH

class BuddyList(hippo.CanvasBox):
    def __init__(self, buddies):
        hippo.CanvasBox.__init__(self, xalign=hippo.ALIGNMENT_START,
                                 orientation=hippo.ORIENTATION_HORIZONTAL)

        for buddy in buddies:
            nick_, color = buddy
            hbox = hippo.CanvasBox(orientation=hippo.ORIENTATION_HORIZONTAL)
            icon = CanvasIcon(icon_name='computer-xo',
                              xo_color=XoColor(color),
                              size=style.STANDARD_ICON_SIZE)
            icon.set_palette(BuddyPalette(buddy))
            hbox.append(icon)
            self.append(hbox)

class ExpandedEntry(hippo.CanvasBox):
    def __init__(self, metadata):
        hippo.CanvasBox.__init__(self)
        self.props.orientation = hippo.ORIENTATION_VERTICAL
        self.props.background_color = style.COLOR_WHITE.get_int()
        self.props.padding_top = style.DEFAULT_SPACING * 3

        self._metadata = metadata
        self._update_title_sid = None

        # Create header
        header = hippo.CanvasBox(orientation=hippo.ORIENTATION_HORIZONTAL,
                                 padding=style.DEFAULT_PADDING,
                                 padding_right=style.GRID_CELL_SIZE,
                                 spacing=style.DEFAULT_SPACING)
        self.append(header)

        # Create two column body

        body = hippo.CanvasBox(orientation=hippo.ORIENTATION_HORIZONTAL,
                               spacing=style.DEFAULT_SPACING * 3,
                               padding_left=style.GRID_CELL_SIZE,
                               padding_right=style.GRID_CELL_SIZE,
                               padding_top=style.DEFAULT_SPACING * 3)

        self.append(body, hippo.PACK_EXPAND)

        first_column = hippo.CanvasBox(orientation=hippo.ORIENTATION_VERTICAL,
                                       spacing=style.DEFAULT_SPACING)
        body.append(first_column)

        second_column = hippo.CanvasBox(orientation=hippo.ORIENTATION_VERTICAL,
                                       spacing=style.DEFAULT_SPACING)
        body.append(second_column, hippo.PACK_EXPAND)

        # Header

        self._keep_icon = self._create_keep_icon()
        header.append(self._keep_icon)

        self._icon = self._create_icon()
        header.append(self._icon)

        self._title = self._create_title()
        header.append(self._title, hippo.PACK_EXPAND)

        # TODO: create a version list popup instead of a date label
        self._date = self._create_date()
        header.append(self._date)

        if gtk.widget_get_default_direction() == gtk.TEXT_DIR_RTL:
            header.reverse()

        # First column
        
        self._preview = self._create_preview()
        first_column.append(self._preview)

        # Second column

        description_box, self._description = self._create_description()
        second_column.append(description_box)

        tags_box, self._tags = self._create_tags()
        second_column.append(tags_box)

        self._buddy_list = self._create_buddy_list()
        second_column.append(self._buddy_list)

    def _create_keep_icon(self):
        keep = int(self._metadata.get('keep', 0)) == 1
        keep_icon = KeepIcon(keep)
        keep_icon.connect('activated', self._keep_icon_activated_cb)
        return keep_icon

    def _create_icon(self):
        icon = CanvasIcon(file_name=misc.get_icon_name(self._metadata))
        icon.connect_after('button-release-event',
                           self._icon_button_release_event_cb)

        if misc.is_activity_bundle(self._metadata):
            icon.props.fill_color = style.COLOR_TRANSPARENT.get_svg()
            icon.props.stroke_color = style.COLOR_BUTTON_GREY.get_svg()
        else:
            if self._metadata.has_key('icon-color') and \
                   self._metadata['icon-color']:
                icon.props.xo_color = XoColor( \
                    self._metadata['icon-color'])

        icon.set_palette(ObjectPalette(self._metadata))

        return icon

    def _create_title(self):
        title = CanvasEntry()
        title.set_background(style.COLOR_WHITE.get_html())
        title.props.text = self._metadata.get('title', _('Untitled'))
        title.props.widget.connect('focus-out-event',
                                   self._title_focus_out_event_cb)
        return title

    def _create_date(self):
        date = hippo.CanvasText(xalign=hippo.ALIGNMENT_START,
                                font_desc=style.FONT_NORMAL.get_pango_desc(),
                                text = misc.get_date(self._metadata))
        return date

    def _create_preview(self):
        width = style.zoom(320)
        height = style.zoom(240)
        box = hippo.CanvasBox()

        if self._metadata.has_key('preview') and \
                len(self._metadata['preview']) > 4:
            
            if self._metadata['preview'][1:4] == 'PNG':
                preview_data = self._metadata['preview']
            else:
                # TODO: We are close to be able to drop this.
                import base64
                preview_data = base64.b64decode(
                        self._metadata['preview'])

            png_file = StringIO.StringIO(preview_data)
            try:
                surface = cairo.ImageSurface.create_from_png(png_file)
                has_preview = True
            except Exception:
                logging.exception('Error while loading the preview')
                has_preview = False
        else:
            has_preview = False

        if has_preview:
            preview_box = hippo.CanvasImage(image=surface,
                    border=style.LINE_WIDTH,
                    border_color=style.COLOR_BUTTON_GREY.get_int(),
                    xalign=hippo.ALIGNMENT_CENTER,
                    yalign=hippo.ALIGNMENT_CENTER,
                    scale_width=width,
                    scale_height=height)
        else:
            preview_box = hippo.CanvasText(text=_('No preview'),
                    font_desc=style.FONT_NORMAL.get_pango_desc(),
                    xalign=hippo.ALIGNMENT_CENTER,
                    yalign=hippo.ALIGNMENT_CENTER,
                    border=style.LINE_WIDTH,
                    border_color=style.COLOR_BUTTON_GREY.get_int(),
                    color=style.COLOR_BUTTON_GREY.get_int(),
                    box_width=width,
                    box_height=height)
        preview_box.connect_after('button-release-event',
                                  self._preview_box_button_release_event_cb)
        box.append(preview_box)
        return box

    def _create_buddy_list(self):

        vbox = hippo.CanvasBox()
        vbox.props.spacing = style.DEFAULT_SPACING
        
        text = hippo.CanvasText(text=_('Participants:'),
                                font_desc=style.FONT_NORMAL.get_pango_desc())
        text.props.color = style.COLOR_BUTTON_GREY.get_int()

        if gtk.widget_get_default_direction() == gtk.TEXT_DIR_RTL:
            text.props.xalign = hippo.ALIGNMENT_END
        else:
            text.props.xalign = hippo.ALIGNMENT_START

        vbox.append(text)

        if self._metadata.has_key('buddies') and \
                self._metadata['buddies']:
            buddies = cjson.decode(self._metadata['buddies']).values()
            vbox.append(BuddyList(buddies))
            return vbox
        else:
            return vbox

    def _create_description(self):
        vbox = hippo.CanvasBox()
        vbox.props.spacing = style.DEFAULT_SPACING

        text = hippo.CanvasText(text=_('Description:'),
                                font_desc=style.FONT_NORMAL.get_pango_desc())
        text.props.color = style.COLOR_BUTTON_GREY.get_int()

        if gtk.widget_get_default_direction() == gtk.TEXT_DIR_RTL:
            text.props.xalign = hippo.ALIGNMENT_END
        else:
            text.props.xalign = hippo.ALIGNMENT_START

        vbox.append(text)

        description = self._metadata.get('description', '')
        text_view = CanvasTextView(description,
                                   box_height=style.GRID_CELL_SIZE * 2)
        vbox.append(text_view, hippo.PACK_EXPAND)

        text_view.text_view_widget.props.accepts_tab = False
        text_view.text_view_widget.connect('focus-out-event',
                                           self._description_focus_out_event_cb)

        return vbox, text_view

    def _create_tags(self):
        vbox = hippo.CanvasBox()
        vbox.props.spacing = style.DEFAULT_SPACING
        
        text = hippo.CanvasText(text=_('Tags:'),
                                font_desc=style.FONT_NORMAL.get_pango_desc())
        text.props.color = style.COLOR_BUTTON_GREY.get_int()

        if gtk.widget_get_default_direction() == gtk.TEXT_DIR_RTL:
            text.props.xalign = hippo.ALIGNMENT_END
        else:
            text.props.xalign = hippo.ALIGNMENT_START

        vbox.append(text)
        
        tags = self._metadata.get('tags', '')
        text_view = CanvasTextView(tags, box_height=style.GRID_CELL_SIZE * 2)
        vbox.append(text_view, hippo.PACK_EXPAND)

        text_view.text_view_widget.props.accepts_tab = False
        text_view.text_view_widget.connect('focus-out-event',
                                           self._tags_focus_out_event_cb)

        return vbox, text_view

    def _title_notify_text_cb(self, entry, pspec):
        if not self._update_title_sid:
            self._update_title_sid = gobject.timeout_add_seconds(1,
                                                         self._update_title_cb)

    def _title_focus_out_event_cb(self, entry, event):
        self._update_entry()

    def _description_focus_out_event_cb(self, text_view, event):
        self._update_entry()

    def _tags_focus_out_event_cb(self, text_view, event):
        self._update_entry()

    def _update_entry(self):
        needs_update = False

        old_title = self._metadata.get('title', None)
        if old_title != self._title.props.text:
            self._icon.palette.props.primary_text = self._title.props.text
            self._metadata['title'] = self._title.props.text
            self._metadata['title_set_by_user'] = '1'
            needs_update = True

        old_tags = self._metadata.get('tags', None)
        new_tags = self._tags.text_view_widget.props.buffer.props.text
        if old_tags != new_tags:
            self._metadata['tags'] = new_tags
            needs_update = True

        old_description = self._metadata.get('description', None)
        new_description = \
                self._description.text_view_widget.props.buffer.props.text
        if old_description != new_description:
            self._metadata['description'] = new_description
            needs_update = True

        if needs_update:
            model.write(self._metadata, update_mtime=False)
 
        self._update_title_sid = None
 
    def get_keep(self):
        return int(self._metadata.get('keep', 0)) == 1

    def _keep_icon_activated_cb(self, keep_icon):
        if self.get_keep():
            self._metadata['keep'] = 0
        else:
            self._metadata['keep'] = 1
        model.write(self._metadata, update_mtime=False)

        keep_icon.props.keep = self.get_keep()

    def _icon_button_release_event_cb(self, button, event):
        logging.debug('_icon_button_release_event_cb')
        misc.resume(self._metadata)
        return True

    def _preview_box_button_release_event_cb(self, button, event):
        logging.debug('_preview_box_button_release_event_cb')
        misc.resume(self._metadata)
        return True