268 lines
9.5 KiB
Python
268 lines
9.5 KiB
Python
#!/usr/bin/env python
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# Copyright (C) 2007, Eduardo Silva (edsiper@gmail.com)
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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import gtk
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from gtk import gdk, keysyms
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import gobject
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import pango
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ALIGNMENT_AUTOMATIC = 0
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ALIGNMENT_BOTTOM_LEFT = 1
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ALIGNMENT_BOTTOM_RIGHT = 2
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ALIGNMENT_LEFT_BOTTOM = 3
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ALIGNMENT_LEFT_TOP = 4
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ALIGNMENT_RIGHT_BOTTOM = 5
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ALIGNMENT_RIGHT_TOP = 6
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ALIGNMENT_TOP_LEFT = 7
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ALIGNMENT_TOP_RIGHT = 8
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class Palette(gtk.Window):
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__gtype_name__ = 'SugarPalette'
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__gproperties__ = {
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'parent': (object, None, None, gobject.PARAM_READWRITE),
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'alignment': (gobject.TYPE_INT, None, None, 0, 8, ALIGNMENT_AUTOMATIC,
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gobject.PARAM_READWRITE)
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}
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_PADDING = 1
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_WIN_BORDER = 5
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def __init__(self):
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gobject.GObject.__init__(self, type=gtk.WINDOW_POPUP)
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gtk.Window.__init__(self)
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self._alignment = ALIGNMENT_AUTOMATIC
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self._palette_label = gtk.Label()
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self._palette_label.set_ellipsize(pango.ELLIPSIZE_START)
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self._palette_label.show()
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self._separator = gtk.HSeparator()
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self._separator.hide()
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self._menu_bar = gtk.MenuBar()
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self._menu_bar.set_pack_direction(gtk.PACK_DIRECTION_TTB)
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self._menu_bar.show()
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self._content = gtk.HBox()
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self._content.show()
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self._button_bar = gtk.HButtonBox()
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self._button_bar.show()
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# Set main container
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vbox = gtk.VBox(False, 0)
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vbox.pack_start(self._palette_label, False, False, self._PADDING)
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vbox.pack_start(self._separator, True, True, self._PADDING)
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vbox.pack_start(self._menu_bar, True, True, self._PADDING)
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vbox.pack_start(self._content, True, True, self._PADDING)
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vbox.pack_start(self._button_bar, True, True, self._PADDING)
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vbox.show()
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# Widget events
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self.connect('motion-notify-event', self._mouse_over_widget_cb)
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self.connect('leave-notify-event', self._mouse_out_widget_cb)
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self.connect('button-press-event', self._close_palette_cb)
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self.connect('key-press-event', self._on_key_press_event_cb)
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self.set_border_width(self._WIN_BORDER)
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self.add(vbox)
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def do_set_property(self, pspec, value):
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if pspec.name == 'parent':
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self._parent_widget = value
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elif pspec.name == 'alignment':
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self._alignment = value
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else:
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raise AssertionError
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def set_position(self):
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# Automatic Alignment
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if self._alignment == ALIGNMENT_AUTOMATIC:
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# Trying Different types of ALIGNMENTS,
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# and return the choosen one
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if self._try_position(ALIGNMENT_BOTTOM_LEFT):
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return ALIGNMENT_BOTTOM_LEFT
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elif self._try_position(ALIGNMENT_BOTTOM_RIGHT):
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return ALIGNMENT_BOTTOM_RIGHT
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elif self._try_position(ALIGNMENT_LEFT_BOTTOM):
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return ALIGNMENT_LEFT_BOTTOM
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elif self._try_position(ALIGNMENT_LEFT_TOP):
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return ALIGNMENT_LEFT_TOP
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elif self._try_position(ALIGNMENT_RIGHT_BOTTOM):
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return ALIGNMENT_RIGHT_BOTTOM
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elif self._try_position(ALIGNMENT_RIGHT_TOP):
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return ALIGNMENT_RIGHT_TOP
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elif self._try_position(ALIGNMENT_TOP_LEFT):
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return ALIGNMENT_TOP_LEFT
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elif self._try_position(ALIGNMENT_TOP_RIGHT):
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return ALIGNMENT_TOP_RIGHT
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else:
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# Manual Alignment
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move_x, move_y = self._calc_position(self._alignment)
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self.move(move_x, move_y)
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def _try_position(self, alignment):
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scr_width = gtk.gdk.screen_width()
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scr_height = gtk.gdk.screen_height()
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plt_width, plt_height = self.size_request()
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move_x, move_y = self._calc_position(alignment)
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self.move(move_x, move_y)
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plt_x, plt_y = self.window.get_origin()
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if (plt_x<0 or plt_x+plt_width>scr_width) or (plt_y<0 or plt_y+plt_height>scr_height):
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return False
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else:
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self.move(move_x, move_y)
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return True
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def _calc_position(self, alignment):
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win_x, win_y = self._parent_widget.window.get_origin()
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parent_rectangle = self._parent_widget.get_allocation()
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palette_rectangle = self.get_allocation()
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palette_width, palette_height = self.size_request()
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if alignment == ALIGNMENT_BOTTOM_LEFT:
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move_x = win_x + parent_rectangle.x
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move_y = win_y + parent_rectangle.y + parent_rectangle.height
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elif alignment == ALIGNMENT_BOTTOM_RIGHT:
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move_x = (win_x + parent_rectangle.x + parent_rectangle.width) - palette_width
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move_y = win_y + parent_rectangle.y + parent_rectangle.height
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elif alignment == ALIGNMENT_LEFT_BOTTOM:
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move_x = (win_x + parent_rectangle.x) - palette_width
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move_y = win_y + parent_rectangle.y
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elif alignment == ALIGNMENT_LEFT_TOP:
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move_x = (win_x + parent_rectangle.x) - palette_width
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move_y = (win_y + parent_rectangle.y + parent_rectangle.height) - palette_rectangle.height
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elif alignment == ALIGNMENT_RIGHT_BOTTOM:
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move_x = win_x + parent_rectangle.x + parent_rectangle.width
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move_y = win_y + parent_rectangle.y
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elif alignment == ALIGNMENT_RIGHT_TOP:
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move_x = win_x + parent_rectangle.x + parent_rectangle.width
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move_y = (win_y + parent_rectangle.y + parent_rectangle.height) - palette_rectangle.height
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elif alignment == ALIGNMENT_TOP_LEFT:
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move_x = (win_x + parent_rectangle.x)
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move_y = (win_y + parent_rectangle.y) - (palette_rectangle.height)
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elif alignment == ALIGNMENT_TOP_RIGHT:
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move_x = (win_x + parent_rectangle.x + parent_rectangle.width) - palette_width
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move_y = (win_y + parent_rectangle.y) - (palette_rectangle.height)
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return move_x, move_y
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def set_primary_state(self, label, accel_path=None):
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if accel_path != None:
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item = gtk.MenuItem(label)
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item.set_accel_path(accel_path)
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self.append_menu_item(item)
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self._separator.hide()
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else:
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self._palette_label.set_text(label)
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self._separator.show()
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def append_menu_item(self, item):
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self._menu_bar.append(item)
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item.show()
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def set_content(self, widget):
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self._content.pack_start(widget, True, True, self._PADDING)
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widget.show()
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def append_button(self, button):
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button.connect('released', self._close_palette_cb)
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self._button_bar.pack_start(button, True, True, self._PADDING)
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button.show()
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# Display the palette and set the position on the screen
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def popup(self):
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# We need to know if the mouse pointer continue inside
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# the parent widget (opener)
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pointer_x, pointer_y = self._parent_widget.get_pointer()
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parent_alloc = self._parent_widget.get_allocation()
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pointer_rect = gdk.Rectangle(pointer_x + parent_alloc.x, pointer_y + parent_alloc.y, 1, 1)
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if (self._parent_widget.allocation.intersect(pointer_rect).width == 0):
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return
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self.show()
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self.set_position()
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self._pointer_grab()
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# PRIVATE METHODS
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def _is_mouse_out(self, window, event):
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# If we're clicking outside of the Palette
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# return True
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event_rect = gdk.Rectangle(int(event.x), int(event.y), 1, 1)
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if (event.window != self.window or self.allocation.intersect(event_rect).width==0):
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return True
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else:
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return False
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def _pointer_grab(self):
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gtk.gdk.pointer_grab(self.window, owner_events=False,
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event_mask=gtk.gdk.BUTTON_PRESS_MASK |
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gtk.gdk.BUTTON_RELEASE_MASK |
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gtk.gdk.ENTER_NOTIFY_MASK |
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gtk.gdk.LEAVE_NOTIFY_MASK |
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gtk.gdk.POINTER_MOTION_MASK)
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gdk.keyboard_grab(self.window, False)
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# SIGNAL HANDLERS
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# Release the GDK pointer and hide the palette
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def _close_palette_cb(self, widget=None, event=None):
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gtk.gdk.pointer_ungrab()
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self.hide()
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# Mouse is out of the widget
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def _mouse_out_widget_cb(self, widget, event):
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if (widget == self) and self._is_mouse_out(widget, event):
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self._pointer_grab()
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# Mouse inside the widget
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def _mouse_over_widget_cb(self, widget, event):
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gtk.gdk.pointer_ungrab()
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# Some key is pressed
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def _on_key_press_event_cb(self, window, event):
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# Escape or Alt+Up: Close
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# Enter, Return or Space: Select
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keyval = event.keyval
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state = event.state & gtk.accelerator_get_default_mod_mask()
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if (keyval == keysyms.Escape or
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((keyval == keysyms.Up or keyval == keysyms.KP_Up) and
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state == gdk.MOD1_MASK)):
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self._close_palette_cb()
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elif keyval == keysyms.Tab:
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self._close_palette_cb()
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