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# 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 gtk
from gtk import gdk, keysyms
import gobject
import time
import hippo
ALIGNMENT_AUTOMATIC = 0
ALIGNMENT_BOTTOM_LEFT = 1
ALIGNMENT_BOTTOM_RIGHT = 2
ALIGNMENT_LEFT_BOTTOM = 3
ALIGNMENT_LEFT_TOP = 4
ALIGNMENT_RIGHT_BOTTOM = 5
ALIGNMENT_RIGHT_TOP = 6
ALIGNMENT_TOP_LEFT = 7
ALIGNMENT_TOP_RIGHT = 8
class Palette(gtk.Window):
__gtype_name__ = 'SugarPalette'
__gproperties__ = {
'invoker' : (object, None, None,
gobject.PARAM_READWRITE),
'alignment' : (gobject.TYPE_INT, None, None, 0, 8,
ALIGNMENT_AUTOMATIC,
gobject.PARAM_READWRITE)
}
_PADDING = 1
_WIN_BORDER = 5
def __init__(self, **kwargs):
gobject.GObject.__init__(self, type=gtk.WINDOW_POPUP, **kwargs)
gtk.Window.__init__(self)
self._alignment = ALIGNMENT_AUTOMATIC
self._palette_label = gtk.Label()
self._palette_label.show()
vbox = gtk.VBox(False, 0)
vbox.pack_start(self._palette_label, True, True, self._PADDING)
self._separator = gtk.HSeparator()
self._menu_bar = gtk.MenuBar()
self._menu_bar.set_pack_direction(gtk.PACK_DIRECTION_TTB)
self._content = gtk.HBox()
self._button_bar = gtk.HButtonBox()
# Set main container
vbox.pack_start(self._separator, True, True, self._PADDING)
vbox.pack_start(self._menu_bar, True, True, self._PADDING)
vbox.pack_start(self._content, True, True, self._PADDING)
vbox.pack_start(self._button_bar, True, True, self._PADDING)
vbox.show()
self.add(vbox)
# Widget events
self.connect('enter-notify-event', self._mouse_over_widget_cb)
self.connect('leave-notify-event', self._mouse_out_widget_cb)
self.connect('button-press-event', self._close_palette_cb)
self.connect('key-press-event', self._on_key_press_event_cb)
self.set_border_width(self._WIN_BORDER)
self._scr_width = gtk.gdk.screen_width()
self._scr_height = gtk.gdk.screen_height()
def do_set_property(self, pspec, value):
if pspec.name == 'invoker':
self._invoker = value
elif pspec.name == 'alignment':
self._alignment = value
else:
raise AssertionError
def set_position(self):
# Automatic Alignment
if self._alignment == ALIGNMENT_AUTOMATIC:
# Trying Different types of ALIGNMENTS,
# and return the choosen one
if self._try_position(ALIGNMENT_BOTTOM_LEFT):
return ALIGNMENT_BOTTOM_LEFT
elif self._try_position(ALIGNMENT_BOTTOM_RIGHT):
return ALIGNMENT_BOTTOM_RIGHT
elif self._try_position(ALIGNMENT_LEFT_BOTTOM):
return ALIGNMENT_LEFT_BOTTOM
elif self._try_position(ALIGNMENT_LEFT_TOP):
return ALIGNMENT_LEFT_TOP
elif self._try_position(ALIGNMENT_RIGHT_BOTTOM):
return ALIGNMENT_RIGHT_BOTTOM
elif self._try_position(ALIGNMENT_RIGHT_TOP):
return ALIGNMENT_RIGHT_TOP
elif self._try_position(ALIGNMENT_TOP_LEFT):
return ALIGNMENT_TOP_LEFT
elif self._try_position(ALIGNMENT_TOP_RIGHT):
return ALIGNMENT_TOP_RIGHT
else:
# Manual Alignment
move_x, move_y = self._calc_position(self._alignment)
self.move(move_x, move_y)
def _try_position(self, alignment):
move_x, move_y = self._calc_position(alignment)
self._width, self._height = self.size_request()
plt_x, plt_y = self.window.get_origin()
if move_x > plt_x:
plt_x += (move_x - plt_x)
else:
plt_x -= (plt_x - move_x)
if move_y > plt_y:
plt_y += (move_y - plt_y)
else:
plt_y -= (plt_y - move_y)
if (plt_x < 0 or plt_x + self._width > self._scr_width) or \
(plt_y < 0 or plt_y + self._height > self._scr_height):
return False
else:
self.move(move_x, move_y)
self.show()
return True
def _calc_position(self, alignment):
# Invoker: x, y, width and height
inv_rect = self._invoker.get_rect()
palette_rectangle = self.get_allocation()
if alignment == ALIGNMENT_BOTTOM_LEFT:
move_x = inv_rect.x
move_y = inv_rect.y + inv_rect.height
elif alignment == ALIGNMENT_BOTTOM_RIGHT:
move_x = (inv_rect.x + inv_rect.width) - self._width
move_y = inv_rect.y + inv_rect.height
elif alignment == ALIGNMENT_LEFT_BOTTOM:
move_x = inv_rect.x - self._width
move_y = inv_rect.y
elif alignment == ALIGNMENT_LEFT_TOP:
move_x = inv_rect.x - self._width
move_y = (inv_rect.y + inv_rect.height) - palette_rectangle.height
elif alignment == ALIGNMENT_RIGHT_BOTTOM:
move_x = inv_rect.x + inv_rect.width
move_y = inv_rect.y
elif alignment == ALIGNMENT_RIGHT_TOP:
move_x = inv_rect.x + inv_rect.width
move_y = (inv_rect.y + inv_rect.height) - palette_rectangle.height
elif alignment == ALIGNMENT_TOP_LEFT:
move_x = inv_rect.x
move_y = inv_rect.y - palette_rectangle.height
elif alignment == ALIGNMENT_TOP_RIGHT:
move_x = (inv_rect.x + inv_rect.width) - self._width
move_y = inv_rect.y - palette_rectangle.height
return move_x, move_y
def set_primary_state(self, label, accel_path=None):
if accel_path != None:
item = gtk.MenuItem(label)
item.set_accel_path(accel_path)
self.append_menu_item(item)
self._separator.hide()
else:
self._palette_label.set_text(label)
def append_menu_item(self, item):
self._separator.show()
self._menu_bar.append(item)
self._menu_bar.show()
def set_content(self, widget):
self._separator.show()
self._content.pack_start(widget, True, True, self._PADDING)
def append_button(self, button):
self._separator.show()
button.connect('released', self._close_palette_cb)
self._button_bar.pack_start(button, True, True, self._PADDING)
# Display the palette and set the position on the screen
def popup(self):
self.realize()
self.set_position()
self._pointer_ungrab()
def popdown(self):
self._pointer_ungrab()
self.hide()
# PRIVATE METHODS
# Is the mouse out of the widget ?
def _is_mouse_out(self, widget):
mouse_x, mouse_y = widget.get_pointer()
event_rect = gdk.Rectangle(mouse_x, mouse_y, 1, 1)
if (self.allocation.intersect(event_rect).width==0):
return True
else:
return False
def _pointer_ungrab(self):
gdk.keyboard_ungrab()
def _pointer_grab(self):
gdk.keyboard_grab(self.window, False)
# SIGNAL HANDLERS
# Release the GDK pointer and hide the palette
def _close_palette_cb(self, widget=None, event=None):
self.popdown()
# Mouse is out of the widget
def _mouse_out_widget_cb(self, widget, event):
if (widget == self) and self._is_mouse_out(widget):
self._close_palette_cb()
return
self._pointer_grab()
# Mouse inside the widget
def _mouse_over_widget_cb(self, widget, event):
self._pointer_ungrab()
# Some key is pressed
def _on_key_press_event_cb(self, window, event):
# Escape or Alt+Up: Close
# Enter, Return or Space: Select
keyval = event.keyval
state = event.state & gtk.accelerator_get_default_mod_mask()
if (keyval == keysyms.Escape or
((keyval == keysyms.Up or keyval == keysyms.KP_Up) and
state == gdk.MOD1_MASK)):
self._close_palette_cb()
class WidgetInvoker:
def __init__(self, parent):
self._parent = parent
def get_rect(self):
win_x, win_y = self._parent.window.get_origin()
rectangle = self._parent.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)
# Is mouse over self._parent ?
def is_mouse_over(self):
pointer_x, pointer_y = self._parent.get_pointer()
self._parent_alloc = self._parent.get_allocation()
pointer_rect = gdk.Rectangle(pointer_x + self._parent_alloc.x, \
pointer_y + self._parent_alloc.y, 1, 1)
if (self._parent.allocation.intersect(pointer_rect).width == 0):
return False
return True
class CanvasInvoker:
def __init__(self, parent):
self._parent = parent
def get_rect(self):
context = self._parent.get_context()
x, y = context.translate_to_screen(self._parent)
width, height = self._parent.get_allocation()
return gtk.gdk.Rectangle(x, y, width, height)
# Is mouse over self._parent ?
def is_mouse_over(self):
return True
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