Web   ·   Wiki   ·   Activities   ·   Blog   ·   Lists   ·   Chat   ·   Meeting   ·   Bugs   ·   Git   ·   Translate   ·   Archive   ·   People   ·   Donate
summaryrefslogtreecommitdiffstats
path: root/tray.py
blob: d82e4425b21ed2bbfbd3ac17a31e6486ebb35060 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
# Copyright (C) 2007, One Laptop Per Child
# Copyright (c) 2008, Media Modifications Ltd.
#
# 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.

import gobject
import gtk
import hippo

import sugar
from sugar.graphics import style
from sugar.graphics.palette import Palette, ToolInvoker
from sugar.graphics.toolbutton import ToolButton
from sugar.graphics.icon import Icon

from constants import Constants

_PREVIOUS_PAGE = 0
_NEXT_PAGE = 1

class _TrayViewport(gtk.Viewport):
    __gproperties__ = {
        'can-scroll' : (bool, None, None, False,
                        gobject.PARAM_READABLE),
    }

    def __init__(self, orientation):
        self.orientation = orientation
        self._can_scroll = False

        gobject.GObject.__init__(self)

        self.set_shadow_type(gtk.SHADOW_NONE)

        self.traybar = gtk.Toolbar()
        self.traybar.set_orientation(orientation)
        self.traybar.set_show_arrow(False)
        self.add(self.traybar)
        self.traybar.show()

        self.connect('size_allocate', self._size_allocate_cb)

    def scroll(self, direction):
        if direction == _PREVIOUS_PAGE:
            self._scroll_previous()
        elif direction == _NEXT_PAGE:
            self._scroll_next()

    def _scroll_next(self):
        if self.orientation == gtk.ORIENTATION_HORIZONTAL:
            adj = self.get_hadjustment()
            new_value = adj.value + self.allocation.width
            adj.value = min(new_value, adj.upper - self.allocation.width)
        else:
            adj = self.get_vadjustment()
            new_value = adj.value + self.allocation.height
            adj.value = min(new_value, adj.upper - self.allocation.height)

    def _scroll_to_end(self):
        if self.orientation == gtk.ORIENTATION_HORIZONTAL:
            adj = self.get_hadjustment()
            adj.value = adj.upper# - self.allocation.width
        else:
            adj = self.get_vadjustment()
            adj.value = adj.upper - self.allocation.height

    def _scroll_previous(self):
        if self.orientation == gtk.ORIENTATION_HORIZONTAL:
            adj = self.get_hadjustment()
            new_value = adj.value - self.allocation.width
            adj.value = max(adj.lower, new_value)
        else:
            adj = self.get_vadjustment()
            new_value = adj.value - self.allocation.height
            adj.value = max(adj.lower, new_value)

    def do_size_request(self, requisition):
        child_requisition = self.child.size_request()
        if self.orientation == gtk.ORIENTATION_HORIZONTAL:
            requisition[0] = 0
            requisition[1] = child_requisition[1]
        else:
            requisition[0] = child_requisition[0]
            requisition[1] = 0

    def do_get_property(self, pspec):
        if pspec.name == 'can-scroll':
            return self._can_scroll

    def _size_allocate_cb(self, viewport, allocation):
        bar_requisition = self.traybar.get_child_requisition()
        if self.orientation == gtk.ORIENTATION_HORIZONTAL:
            can_scroll = bar_requisition[0] > allocation.width
        else:
            can_scroll = bar_requisition[1] > allocation.height

        if can_scroll != self._can_scroll:
            self._can_scroll = can_scroll
            self.notify('can-scroll')

class _TrayScrollButton(gtk.Button):
    def __init__(self, icon_name, scroll_direction):
        gobject.GObject.__init__(self)

        self._viewport = None

        self._scroll_direction = scroll_direction

        self.set_relief(gtk.RELIEF_NONE)
        self.set_size_request(style.GRID_CELL_SIZE, style.GRID_CELL_SIZE)

        icon = Icon(icon_name = icon_name,
                    icon_size=gtk.ICON_SIZE_SMALL_TOOLBAR)
        self.set_image(icon)
        icon.show()

        self.connect('clicked', self._clicked_cb)

    def set_viewport(self, viewport):
        self._viewport = viewport
        self._viewport.connect('notify::can-scroll',
                               self._viewport_can_scroll_changed_cb)

    def _viewport_can_scroll_changed_cb(self, viewport, pspec):
        #self.props.visible = self._viewport.props.can_scroll
        self.set_sensitive(self._viewport.props.can_scroll)

    def _clicked_cb(self, button):
        self._viewport.scroll(self._scroll_direction)

    viewport = property(fset=set_viewport)

class HTray(gtk.VBox):
    def __init__(self, **kwargs):
        gobject.GObject.__init__(self, **kwargs)

        separator = hippo.Canvas()
        box = hippo.CanvasBox(
                    border_color=Constants.colorWhite.get_int(),
                    background_color=Constants.colorWhite.get_int(),
                    box_height=1,
                    border_bottom=1)
        separator.set_root(box)
        self.pack_start(separator, False)

        hbox = gtk.HBox()
        self.pack_start(hbox)

        self.scroll_left = _TrayScrollButton('go-left', _PREVIOUS_PAGE)
        self.scroll_left_event = gtk.EventBox()
        self.scroll_left_event.add(self.scroll_left)
        self.scroll_left_event.set_size_request(55, -1)
        hbox.pack_start(self.scroll_left_event, False)

        self.viewport = _TrayViewport(gtk.ORIENTATION_HORIZONTAL)
        hbox.pack_start(self.viewport)
        self.viewport.show()

        self.scroll_right = _TrayScrollButton('go-right', _NEXT_PAGE)
        self.scroll_right_event = gtk.EventBox()
        self.scroll_right_event.add(self.scroll_right)
        self.scroll_right_event.set_size_request(55, -1)
        hbox.pack_start(self.scroll_right_event, False)

        self.scroll_left.set_focus_on_click(False)
        self.scroll_left_event.modify_bg(gtk.STATE_NORMAL, sugar.graphics.style.COLOR_TOOLBAR_GREY.get_gdk_color())
        self.scroll_left.modify_bg(gtk.STATE_ACTIVE, sugar.graphics.style.COLOR_BUTTON_GREY.get_gdk_color())

        self.scroll_right.set_focus_on_click(False)
        self.scroll_right_event.modify_bg(gtk.STATE_NORMAL, sugar.graphics.style.COLOR_TOOLBAR_GREY.get_gdk_color())
        self.scroll_right.modify_bg(gtk.STATE_ACTIVE, sugar.graphics.style.COLOR_BUTTON_GREY.get_gdk_color())

        self.scroll_left.viewport = self.viewport
        self.scroll_right.viewport = self.viewport

        self.connect_after("size-allocate", self._sizeAllocateCb)

    def _sizeAllocateCb(self, widget, event ):
        self.viewport.notify('can-scroll')

    def get_children(self):
        return self.viewport.traybar.get_children()

    def add_item(self, item, index=-1):
        self.viewport.traybar.insert(item, index)

    def remove_item(self, item):
        self.viewport.traybar.remove(item)

    def get_item_index(self, item):
        return self.viewport.traybar.get_item_index(item)

    def scroll_to_end(self):
        self.viewport._scroll_to_end()