sugar-toolkit-gtk3/sugar/graphics/palette.py
2007-07-14 13:11:59 +02:00

483 lines
15 KiB
Python

# Copyright (C) 2007, Eduardo Silva <edsiper@gmail.com>
#
# 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 logging
import gtk
import gobject
import time
import hippo
from sugar.graphics import palettegroup
from sugar.graphics import animator
from sugar.graphics import units
from sugar import _sugarext
_BOTTOM_LEFT = 0
_BOTTOM_RIGHT = 1
_LEFT_BOTTOM = 2
_LEFT_TOP = 3
_RIGHT_BOTTOM = 4
_RIGHT_TOP = 5
_TOP_LEFT = 6
_TOP_RIGHT = 7
class Palette(gobject.GObject):
AUTOMATIC = 0
BOTTOM = 1
LEFT = 2
RIGHT = 3
TOP = 4
__gtype_name__ = 'SugarPalette'
__gproperties__ = {
'invoker' : (object, None, None,
gobject.PARAM_READWRITE),
'position' : (gobject.TYPE_INT, None, None, 0, 5,
0, gobject.PARAM_READWRITE)
}
__gsignals__ = {
'popup' : (gobject.SIGNAL_RUN_FIRST,
gobject.TYPE_NONE, ([])),
'popdown' : (gobject.SIGNAL_RUN_FIRST,
gobject.TYPE_NONE, ([]))
}
def __init__(self, label, accel_path=None):
gobject.GObject.__init__(self)
self._invoker = None
self._group_id = None
self._up = False
self._position = self.AUTOMATIC
self._palette_popup_sid = None
self._popup_anim = animator.Animator(0.3, 10)
self._popup_anim.add(_PopupAnimation(self))
self._secondary_anim = animator.Animator(1.3, 10)
self._secondary_anim.add(_SecondaryAnimation(self))
self._popdown_anim = animator.Animator(0.6, 10)
self._popdown_anim.add(_PopdownAnimation(self))
self._menu = _sugarext.Menu()
self._menu.set_min_width(units.grid_to_pixels(1))
self._primary = _PrimaryMenuItem(label, accel_path)
self._menu.append(self._primary)
self._primary.show()
self._separator = gtk.SeparatorMenuItem()
self._menu.append(self._separator)
self._content = _ContentMenuItem()
self._menu.append(self._content)
self._button_bar = _ButtonBarMenuItem()
self._menu.append(self._button_bar)
self._menu.connect('enter-notify-event',
self._enter_notify_event_cb)
self._menu.connect('leave-notify-event',
self._leave_notify_event_cb)
self._menu.connect('button-press-event',
self._button_press_event_cb)
def is_up(self):
return self._up
def set_primary_text(self, label, accel_path=None):
self._primary.set_label(label, accel_path)
def append_menu_item(self, item):
self._separator.show()
self._menu.insert(item, len(self._menu.get_children()) - 2)
def insert_menu_item(self, item, index=-1):
self._separator.show()
if index < 0:
self._menu.insert(item, len(self._menu.get_children()) - 2)
else:
self._menu.insert(item, index + 2)
def remove_menu_item(self, index):
if index > len(self._menu.get_children()) - 4:
raise ValueError('index %i out of range' % index)
self._menu.remove(self._menu.get_children()[index + 2])
if len(self._menu.get_children()) == 0:
self._separator.hide()
def menu_item_count(self):
return len(self._menu.get_children()) - 4
def set_content(self, widget):
self._content.set_widget(widget)
self._content.show()
def append_button(self, button):
self._button_bar.append_button(button)
self._button_bar.show()
def set_group_id(self, group_id):
if self._group_id:
group = palettegroup.get_group(self._group_id)
group.remove(self)
if group_id:
group = palettegroup.get_group(group_id)
group.add(self)
def do_set_property(self, pspec, value):
if pspec.name == 'invoker':
self._invoker = value
self._invoker.connect('mouse-enter', self._invoker_mouse_enter_cb)
self._invoker.connect('mouse-leave', self._invoker_mouse_leave_cb)
self._invoker.connect('focus-out', self._invoker_focus_out_cb)
elif pspec.name == 'position':
self._position = value
else:
raise AssertionError
def do_get_property(self, pspec):
if pspec.name == 'invoker':
return self._invoker
elif pspec.name == 'position':
return self._position
else:
raise AssertionError
def _get_position(self, alignment):
# Invoker: x, y, width and height
inv_rect = self._invoker.get_rect()
palette_width, palette_height = self._menu.size_request()
if alignment == _BOTTOM_LEFT:
x = inv_rect.x
y = inv_rect.y + inv_rect.height
elif alignment == _BOTTOM_RIGHT:
x = (inv_rect.x + inv_rect.width) - palette_width
y = inv_rect.y + inv_rect.height
elif alignment == _LEFT_BOTTOM:
x = inv_rect.x - palette_width
y = inv_rect.y
elif alignment == _LEFT_TOP:
x = inv_rect.x - palette_width
y = (inv_rect.y + inv_rect.height) - palette_height
elif alignment == _RIGHT_BOTTOM:
x = inv_rect.x + inv_rect.width
y = inv_rect.y
elif alignment == _RIGHT_TOP:
x = inv_rect.x + inv_rect.width
y = (inv_rect.y + inv_rect.height) - palette_height
elif alignment == _TOP_LEFT:
x = inv_rect.x
y = inv_rect.y - palette_height
elif alignment == _TOP_RIGHT:
x = (inv_rect.x + inv_rect.width) - palette_width
y = inv_rect.y - palette_height
return x, y
def _in_screen(self, x, y):
[width, height] = self._menu.size_request()
screen_area = self._invoker.get_screen_area()
return x >= screen_area.x and \
y >= screen_area.y and \
x + width <= screen_area.width and \
y + height <= screen_area.height
def _get_automatic_position(self):
alignments = [ _BOTTOM_LEFT, _BOTTOM_RIGHT,
_LEFT_BOTTOM, _LEFT_TOP,
_RIGHT_BOTTOM, _RIGHT_TOP,
_TOP_LEFT, _TOP_RIGHT ]
for alignment in alignments:
x, y = self._get_position(alignment)
if self._in_screen(x, y):
return x, y
# We fail
return (0, 0)
def _show(self):
x = y = 0
if self._position == self.AUTOMATIC:
x, y = self._get_automatic_position()
elif self._position == self.BOTTOM:
x, y = self._get_position(_BOTTOM_LEFT)
if not self._in_screen(x, y):
x, y = self._get_position(_BOTTOM_RIGHT)
elif self._position == self.LEFT:
x, y = self._get_position(_LEFT_BOTTOM)
if not self._in_screen(x, y):
x, y = self._get_position(_LEFT_TOP)
elif self._position == self.RIGHT:
x, y = self._get_position(_RIGHT_BOTTOM)
if not self._in_screen(x, y):
x, y = self._get_position(_RIGHT_TOP)
elif self._position == self.TOP:
x, y = self._get_position(_TOP_LEFT)
if not self._in_screen(x, y):
x, y = self._get_position(_TOP_RIGHT)
self._invoker.connect_to_parent()
self._palette_popup_sid = _palette_observer.connect('popup',
self._palette_observer_popup_cb)
self._menu.popup(x, y)
self._up = True
_palette_observer.emit('popup', self)
self.emit('popup')
def _hide(self):
if not self._palette_popup_sid is None:
_palette_observer.disconnect(self._palette_popup_sid)
self._palette_popup_sid = None
self._menu.popdown()
self._up = False
self.emit('popdown')
def popup(self):
self._popdown_anim.stop()
self._popup_anim.start()
self._secondary_anim.start()
def popdown(self, inmediate=False):
self._secondary_anim.stop()
self._popup_anim.stop()
if not inmediate:
self._popdown_anim.start()
else:
self._hide()
def _invoker_mouse_enter_cb(self, invoker):
self.popup()
def _invoker_mouse_leave_cb(self, invoker):
self.popdown()
def _invoker_focus_out_cb(self, invoker):
self._hide()
def _enter_notify_event_cb(self, widget, event):
if event.detail == gtk.gdk.NOTIFY_NONLINEAR:
self._popdown_anim.stop()
def _leave_notify_event_cb(self, widget, event):
if event.detail == gtk.gdk.NOTIFY_NONLINEAR:
self.popdown()
def _button_press_event_cb(self, widget, event):
pass
def _palette_observer_popup_cb(self, observer, palette):
if self != palette:
self._hide()
class _PrimaryMenuItem(gtk.MenuItem):
def __init__(self, label, accel_path):
gtk.MenuItem.__init__(self)
self.set_border_width(units.points_to_pixels(1))
self._set_label(label, accel_path)
def set_label(self, label, accel_path):
self.remove(self._label)
self._set_label(label, accel_path)
def _set_label(self, label, accel_path):
self._label = gtk.AccelLabel(label)
self._label.set_accel_widget(self)
if accel_path:
self.set_accel_path(accel_path)
self._label.set_alignment(0.0, 0.5)
self.add(self._label)
self._label.show()
class _ContentMenuItem(gtk.MenuItem):
def __init__(self):
gtk.MenuItem.__init__(self)
def set_widget(self, widget):
if self.child:
self.remove(self.child)
self.add(widget)
def is_empty(self):
return self.child is None or not self.child.props.visible
class _ButtonBarMenuItem(gtk.MenuItem):
def __init__(self):
gtk.MenuItem.__init__(self)
self._hbar = gtk.HButtonBox()
self.add(self._hbar)
self._hbar.show()
def append_button(self, button):
self._hbar.pack_start(button)
def is_empty(self):
return len(self._hbar.get_children()) == 0
class _PopupAnimation(animator.Animation):
def __init__(self, palette):
animator.Animation.__init__(self, 0.0, 1.0)
self._palette = palette
def next_frame(self, current):
if current == 1.0:
self._palette._primary.show()
for menu_item in self._palette._menu.get_children()[1:]:
menu_item.hide()
self._palette._show()
class _SecondaryAnimation(animator.Animation):
def __init__(self, palette):
animator.Animation.__init__(self, 0.0, 1.0)
self._palette = palette
def next_frame(self, current):
if current == 1.0:
middle_menu_items = self._palette._menu.get_children()
middle_menu_items = middle_menu_items[2:len(middle_menu_items) - 2]
if middle_menu_items or \
not self._palette._content.is_empty() or \
not self._palette._button_bar.is_empty():
self._palette._separator.show()
for menu_item in middle_menu_items:
menu_item.show()
if not self._palette._content.is_empty():
self._palette._content.show()
if not self._palette._button_bar.is_empty():
self._palette._button_bar.show()
self._palette._show()
class _PopdownAnimation(animator.Animation):
def __init__(self, palette):
animator.Animation.__init__(self, 0.0, 1.0)
self._palette = palette
def next_frame(self, current):
if current == 1.0:
self._palette._hide()
class Invoker(gobject.GObject):
__gtype_name__ = 'SugarPaletteInvoker'
__gsignals__ = {
'mouse-enter': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE, ([])),
'mouse-leave': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE, ([])),
'focus-out': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE, ([]))
}
def __init__(self):
gobject.GObject.__init__(self)
def get_screen_area(self):
width = gtk.gdk.screen_width()
height = gtk.gdk.screen_height()
return gtk.gdk.Rectangle(0, 0, width, height)
def connect_to_parent(self):
window = self.get_toplevel()
window.connect('focus-out-event', self._window_focus_out_event_cb)
def _window_focus_out_event_cb(self, widget, event):
self.emit('focus-out')
class WidgetInvoker(Invoker):
def __init__(self, widget):
Invoker.__init__(self)
self._widget = widget
widget.connect('enter-notify-event', self._enter_notify_event_cb)
widget.connect('leave-notify-event', self._leave_notify_event_cb)
def get_rect(self):
win_x, win_y = self._widget.window.get_origin()
rectangle = self._widget.get_allocation()
x = win_x + rectangle.x
y = win_y + rectangle.y
width = rectangle.width
height = rectangle.height
return gtk.gdk.Rectangle(x, y, width, height)
def _enter_notify_event_cb(self, widget, event):
self.emit('mouse-enter')
def _leave_notify_event_cb(self, widget, event):
self.emit('mouse-leave')
def get_toplevel(self):
return self._widget.get_toplevel()
class CanvasInvoker(Invoker):
def __init__(self, item):
Invoker.__init__(self)
self._item = item
item.connect('motion-notify-event',
self._motion_notify_event_cb)
def get_rect(self):
context = self._item.get_context()
if context:
x, y = context.translate_to_screen(self._item)
width, height = self._item.get_allocation()
return gtk.gdk.Rectangle(x, y, width, height)
def _motion_notify_event_cb(self, button, event):
if event.detail == hippo.MOTION_DETAIL_ENTER:
self.emit('mouse-enter')
elif event.detail == hippo.MOTION_DETAIL_LEAVE:
self.emit('mouse-leave')
return False
def get_toplevel(self):
return hippo.get_canvas_for_item(self._item).get_toplevel()
class _PaletteObserver(gobject.GObject):
__gtype_name__ = 'SugarPaletteObserver'
__gsignals__ = {
'popup': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE, ([object]))
}
def __init__(self):
gobject.GObject.__init__(self)
_palette_observer = _PaletteObserver()