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path: root/sugar-toolkit/src/sugar/graphics/palette.py
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diff --git a/sugar-toolkit/src/sugar/graphics/palette.py b/sugar-toolkit/src/sugar/graphics/palette.py
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+# Copyright (C) 2007, Eduardo Silva <edsiper@gmail.com>
+# Copyright (C) 2008, One Laptop Per Child
+#
+# 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.
+
+"""
+STABLE.
+"""
+
+import logging
+
+import gtk
+import gobject
+import hippo
+import pango
+
+from sugar.graphics import palettegroup
+from sugar.graphics import animator
+from sugar.graphics import style
+from sugar.graphics.icon import Icon
+from sugar import _sugarext
+
+# Helper function to find the gap position and size of widget a
+def _calculate_gap(a, b):
+ # Test for each side if the palette and invoker are
+ # adjacent to each other.
+ gap = True
+
+ if a.y + a.height == b.y:
+ gap_side = gtk.POS_BOTTOM
+ elif a.x + a.width == b.x:
+ gap_side = gtk.POS_RIGHT
+ elif a.x == b.x + b.width:
+ gap_side = gtk.POS_LEFT
+ elif a.y == b.y + b.height:
+ gap_side = gtk.POS_TOP
+ else:
+ gap = False
+
+ if gap:
+ if gap_side == gtk.POS_BOTTOM or gap_side == gtk.POS_TOP:
+ gap_start = min(a.width, max(0, b.x - a.x))
+ gap_size = max(0, min(a.width,
+ (b.x + b.width) - a.x) - gap_start)
+ elif gap_side == gtk.POS_RIGHT or gap_side == gtk.POS_LEFT:
+ gap_start = min(a.height, max(0, b.y - a.y))
+ gap_size = max(0, min(a.height,
+ (b.y + b.height) - a.y) - gap_start)
+
+ if gap and gap_size > 0:
+ return (gap_side, gap_start, gap_size)
+ else:
+ return False
+
+class MouseSpeedDetector(gobject.GObject):
+
+ __gsignals__ = {
+ 'motion-slow': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE, ([])),
+ 'motion-fast': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE, ([])),
+ }
+
+ _MOTION_SLOW = 1
+ _MOTION_FAST = 2
+
+ def __init__(self, parent, delay, thresh):
+ """Create MouseSpeedDetector object,
+ delay in msec
+ threshold in pixels (per tick of 'delay' msec)"""
+
+ gobject.GObject.__init__(self)
+
+ self._threshold = thresh
+ self._parent = parent
+ self._delay = delay
+ self._state = None
+ self._timeout_hid = None
+ self._mouse_pos = None
+
+ def start(self):
+ self.stop()
+
+ self._mouse_pos = self._get_mouse_position()
+ self._timeout_hid = gobject.timeout_add(self._delay, self._timer_cb)
+
+ def stop(self):
+ if self._timeout_hid is not None:
+ gobject.source_remove(self._timeout_hid)
+ self._state = None
+
+ def _get_mouse_position(self):
+ display = gtk.gdk.display_get_default()
+ screen_, x, y, mask_ = display.get_pointer()
+ return (x, y)
+
+ def _detect_motion(self):
+ oldx, oldy = self._mouse_pos
+ (x, y) = self._get_mouse_position()
+ self._mouse_pos = (x, y)
+
+ dist2 = (oldx - x)**2 + (oldy - y)**2
+ if dist2 > self._threshold**2:
+ return True
+ else:
+ return False
+
+ def _timer_cb(self):
+ motion = self._detect_motion()
+ if motion and self._state != self._MOTION_FAST:
+ self.emit('motion-fast')
+ self._state = self._MOTION_FAST
+ elif not motion and self._state != self._MOTION_SLOW:
+ self.emit('motion-slow')
+ self._state = self._MOTION_SLOW
+
+ return True
+
+class Palette(gtk.Window):
+ PRIMARY = 0
+ SECONDARY = 1
+
+ __gtype_name__ = 'SugarPalette'
+
+ __gsignals__ = {
+ 'popup' : (gobject.SIGNAL_RUN_FIRST,
+ gobject.TYPE_NONE, ([])),
+ 'popdown' : (gobject.SIGNAL_RUN_FIRST,
+ gobject.TYPE_NONE, ([]))
+ }
+
+ # DEPRECATED: label is passed with the primary-text property, accel_path
+ # is set via the invoker property, and menu_after_content is not used
+ def __init__(self, label=None, accel_path=None, menu_after_content=False,
+ text_maxlen=0, **kwargs):
+
+ self.palette_state = self.PRIMARY
+
+ self._primary_text = None
+ self._secondary_text = None
+ self._icon = None
+ self._icon_visible = True
+ self._group_id = None
+
+ palette_box = gtk.VBox()
+
+ primary_box = gtk.HBox()
+ palette_box.pack_start(primary_box, expand=False)
+ primary_box.show()
+
+ self._icon_box = gtk.HBox()
+ self._icon_box.set_size_request(style.zoom(style.GRID_CELL_SIZE), -1)
+ primary_box.pack_start(self._icon_box, expand=False)
+
+ labels_box = gtk.VBox()
+ self._label_alignment = gtk.Alignment(xalign=0, yalign=0.5,
+ xscale=1, yscale=0.33)
+ self._label_alignment.set_padding(0, 0, style.DEFAULT_SPACING,
+ style.DEFAULT_SPACING)
+ self._label_alignment.add(labels_box)
+ self._label_alignment.show()
+ primary_box.pack_start(self._label_alignment, expand=True)
+ labels_box.show()
+
+ self._label = gtk.AccelLabel('')
+ self._label.set_alignment(0, 0.5)
+
+ if text_maxlen > 0:
+ self._label.set_max_width_chars(text_maxlen)
+ self._label.set_ellipsize(pango.ELLIPSIZE_MIDDLE)
+ labels_box.pack_start(self._label, expand=True)
+
+ self._secondary_label = gtk.Label()
+ self._secondary_label.set_alignment(0, 0.5)
+
+ if text_maxlen > 0:
+ self._secondary_label.set_max_width_chars(text_maxlen)
+ self._secondary_label.set_ellipsize(pango.ELLIPSIZE_MIDDLE)
+
+ labels_box.pack_start(self._secondary_label, expand=True)
+
+ self._secondary_box = gtk.VBox()
+ palette_box.pack_start(self._secondary_box)
+
+ self._separator = gtk.HSeparator()
+ self._secondary_box.pack_start(self._separator)
+
+ self._menu_content_separator = gtk.HSeparator()
+
+ self._popup_anim = animator.Animator(.5, 10)
+ self._popup_anim.add(_PopupAnimation(self))
+
+ self._secondary_anim = animator.Animator(2.0, 10)
+ self._secondary_anim.add(_SecondaryAnimation(self))
+
+ self._popdown_anim = animator.Animator(0.6, 10)
+ self._popdown_anim.add(_PopdownAnimation(self))
+
+ # we init after initializing all of our containers
+ gobject.GObject.__init__(self, **kwargs)
+
+ self.set_decorated(False)
+ self.set_resizable(False)
+ # Just assume xthickness and ythickness are the same
+ self.set_border_width(self.get_style().xthickness)
+
+ accel_group = gtk.AccelGroup()
+ self.set_data('sugar-accel-group', accel_group)
+ self.add_accel_group(accel_group)
+
+ primary_box.set_size_request(-1, style.zoom(style.GRID_CELL_SIZE)
+ - 2 * self.get_border_width())
+
+
+ self.connect('show', self.__show_cb)
+ self.connect('hide', self.__hide_cb)
+ self.connect('realize', self.__realize_cb)
+ self.connect('destroy', self.__destroy_cb)
+
+ self._alignment = None
+ self._old_alloc = None
+ self._full_request = [0, 0]
+ self._cursor_x = 0
+ self._cursor_y = 0
+ self._invoker = None
+ self._group_id = None
+ self._up = False
+ self._menu_box = None
+ self._content = None
+ self._invoker_hids = []
+
+ self.set_group_id("default")
+
+ # we set these for backward compatibility
+ if label is not None:
+ self.props.primary_text = label
+
+ self._add_menu()
+ self._secondary_box.pack_start(self._menu_content_separator)
+ self._add_content()
+
+ self.action_bar = PaletteActionBar()
+ self._secondary_box.pack_start(self.action_bar)
+ self.action_bar.show()
+
+ self.add(palette_box)
+ palette_box.show()
+
+ # The menu is not shown here until an item is added
+ self.menu = _Menu(self)
+ self.menu.connect('item-inserted', self.__menu_item_inserted_cb)
+
+ self.connect('enter-notify-event', self.__enter_notify_event_cb)
+ self.connect('leave-notify-event', self.__leave_notify_event_cb)
+
+ self._mouse_detector = MouseSpeedDetector(self, 200, 5)
+ self._mouse_detector.connect('motion-slow', self._mouse_slow_cb)
+
+ def __menu_item_inserted_cb(self, menu):
+ self._update_separators()
+
+ def __destroy_cb(self, palette):
+ self.set_group_id(None)
+
+ # Break the reference cycle. It looks like the gc is not able to free
+ # it, possibly because gtk.Menu memory handling is very special.
+ self.menu = None
+
+ def _add_menu(self):
+ self._menu_box = gtk.VBox()
+ self._secondary_box.pack_start(self._menu_box)
+ self._menu_box.show()
+
+ def _add_content(self):
+ # The content is not shown until a widget is added
+ self._content = gtk.VBox()
+ self._content.set_border_width(style.DEFAULT_SPACING)
+ self._secondary_box.pack_start(self._content)
+
+ def do_style_set(self, previous_style):
+ # Prevent a warning from pygtk
+ if previous_style is not None:
+ gtk.Window.do_style_set(self, previous_style)
+ self.set_border_width(self.get_style().xthickness)
+
+ def is_up(self):
+ return self._up
+
+ def get_rect(self):
+ win_x, win_y = self.window.get_origin()
+ rectangle = self.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 set_invoker(self, invoker):
+ for hid in self._invoker_hids[:]:
+ self._invoker.disconnect(hid)
+ self._invoker_hids.remove(hid)
+
+ self._invoker = invoker
+ if invoker is not None:
+ self._invoker_hids.append(self._invoker.connect(
+ 'mouse-enter', self._invoker_mouse_enter_cb))
+ self._invoker_hids.append(self._invoker.connect(
+ 'mouse-leave', self._invoker_mouse_leave_cb))
+ self._invoker_hids.append(self._invoker.connect(
+ 'right-click', self._invoker_right_click_cb))
+ if hasattr(invoker.props, 'widget'):
+ self._update_accel_widget()
+ logging.debug(('Setup widget', invoker.props.widget))
+ self._invoker_hids.append(self._invoker.connect(
+ 'notify::widget', self._invoker_widget_changed_cb))
+
+ def get_invoker(self):
+ return self._invoker
+
+ invoker = gobject.property(type=object,
+ getter=get_invoker,
+ setter=set_invoker)
+
+ def _update_accel_widget(self):
+ assert self.props.invoker is not None
+ self._label.props.accel_widget = self.props.invoker.props.widget
+
+ def set_primary_text(self, label, accel_path=None):
+ self._primary_text = label
+
+ if label is not None:
+ self._label.set_markup('<b>%s</b>' % label)
+ self._label.show()
+
+ def get_primary_text(self):
+ return self._primary_text
+
+ primary_text = gobject.property(type=str,
+ getter=get_primary_text,
+ setter=set_primary_text)
+
+ def set_secondary_text(self, label):
+ self._secondary_text = label
+
+ if label is None:
+ self._secondary_label.hide()
+ else:
+ self._secondary_label.set_text(label)
+ self._secondary_label.show()
+
+ def get_secondary_text(self):
+ return self._secondary_text
+
+
+ secondary_text = gobject.property(type=str,
+ getter=get_secondary_text,
+ setter=set_secondary_text)
+ def _show_icon(self):
+ self._label_alignment.set_padding(0, 0, 0, style.DEFAULT_SPACING)
+ self._icon_box.show()
+
+ def _hide_icon(self):
+ self._icon_box.hide()
+ self._label_alignment.set_padding(0, 0, style.DEFAULT_SPACING,
+ style.DEFAULT_SPACING)
+
+ def set_icon(self, icon):
+ if icon is None:
+ self._icon = None
+ self._hide_icon()
+ else:
+ if self._icon:
+ self._icon_box.remove(self._icon)
+
+ self._icon = icon
+ self._icon.props.icon_size = gtk.ICON_SIZE_LARGE_TOOLBAR
+ self._icon_box.pack_start(self._icon)
+ self._icon.show()
+ self._show_icon()
+
+ def get_icon(self):
+ return self._icon
+
+ icon = gobject.property(type=object, getter=get_icon, setter=set_icon)
+
+ def set_icon_visible(self, visible):
+ self._icon_visible = visible
+
+ if visible and self._icon is not None:
+ self._show_icon()
+ else:
+ self._hide_icon()
+
+ def get_icon_visible(self):
+ return self._icon_visilbe
+
+ icon_visible = gobject.property(type=bool,
+ default=True,
+ getter=get_icon_visible,
+ setter=set_icon_visible)
+
+ def set_content(self, widget):
+ if len(self._content.get_children()) > 0:
+ self._content.remove(self._content.get_children()[0])
+
+ if widget is not None:
+ self._content.add(widget)
+ self._content.show()
+ else:
+ self._content.hide()
+
+ self._update_accept_focus()
+ self._update_separators()
+
+ def set_group_id(self, group_id):
+ if self._group_id:
+ group = palettegroup.get_group(self._group_id)
+ group.remove(self)
+ if group_id:
+ self._group_id = group_id
+ group = palettegroup.get_group(group_id)
+ group.add(self)
+
+ def get_group_id(self):
+ return self._group_id
+
+ group_id = gobject.property(type=str,
+ getter=get_group_id,
+ setter=set_group_id)
+
+ def do_size_request(self, requisition):
+ gtk.Window.do_size_request(self, requisition)
+
+ # gtk.AccelLabel request doesn't include the accelerator.
+ label_width = self._label_alignment.size_request()[0] + \
+ self._label.get_accel_width() + \
+ 2 * self.get_border_width()
+
+ requisition.width = max(requisition.width,
+ style.zoom(style.GRID_CELL_SIZE * 2),
+ label_width,
+ self._full_request[0])
+
+ def do_size_allocate(self, allocation):
+ gtk.Window.do_size_allocate(self, allocation)
+
+ if self._old_alloc is None or \
+ self._old_alloc.x != allocation.x or \
+ self._old_alloc.y != allocation.y or \
+ self._old_alloc.width != allocation.width or \
+ self._old_alloc.height != allocation.height:
+ self.queue_draw()
+
+ # We need to store old allocation because when size_allocate
+ # is called widget.allocation is already updated.
+ # gtk.Window resizing is different from normal containers:
+ # the X window is resized, widget.allocation is updated from
+ # the configure request handler and finally size_allocate is called.
+ self._old_alloc = allocation
+
+ def do_expose_event(self, event):
+ # We want to draw a border with a beautiful gap
+ if self._invoker is not None and self._invoker.has_rectangle_gap():
+ invoker = self._invoker.get_rect()
+ palette = self.get_rect()
+
+ gap = _calculate_gap(palette, invoker)
+ else:
+ gap = False
+
+ allocation = self.get_allocation()
+ wstyle = self.get_style()
+
+ if gap:
+ wstyle.paint_box_gap(event.window, gtk.STATE_PRELIGHT,
+ gtk.SHADOW_IN, event.area, self, "palette",
+ 0, 0, allocation.width, allocation.height,
+ gap[0], gap[1], gap[2])
+ else:
+ wstyle.paint_box(event.window, gtk.STATE_PRELIGHT,
+ gtk.SHADOW_IN, event.area, self, "palette",
+ 0, 0, allocation.width, allocation.height)
+
+ # Fall trough to the container expose handler.
+ # (Leaving out the window expose handler which redraws everything)
+ gtk.Bin.do_expose_event(self, event)
+
+ def _update_separators(self):
+ visible = len(self.menu.get_children()) > 0 or \
+ len(self._content.get_children()) > 0
+ self._separator.props.visible = visible
+
+ visible = len(self.menu.get_children()) > 0 and \
+ len(self._content.get_children()) > 0
+ self._menu_content_separator.props.visible = visible
+
+ def _update_accept_focus(self):
+ accept_focus = len(self._content.get_children())
+ if self.window:
+ self.window.set_accept_focus(accept_focus)
+
+ def __realize_cb(self, widget):
+ self.window.set_type_hint(gtk.gdk.WINDOW_TYPE_HINT_DIALOG)
+ self._update_accept_focus()
+
+ def _update_full_request(self):
+ if self.palette_state == self.PRIMARY:
+ self.menu.embed(self._menu_box)
+ self._secondary_box.show()
+
+ self._full_request = self.size_request()
+
+ if self.palette_state == self.PRIMARY:
+ self.menu.unembed()
+ self._secondary_box.hide()
+
+ def _update_position(self):
+ invoker = self._invoker
+ if invoker is None or self._alignment is None:
+ logging.error('Cannot update the palette position.')
+ return
+
+ rect = self.size_request()
+ position = invoker.get_position_for_alignment(self._alignment, rect)
+ if position is None:
+ position = invoker.get_position(rect)
+
+ self.move(position.x, position.y)
+
+ def popup(self, immediate=False, state=None):
+ logging.debug('Palette.popup immediate %r' % immediate)
+
+ if state is None:
+ state = self.PRIMARY
+ self.set_state(state)
+
+ if self._invoker is not None:
+ self._update_full_request()
+ self._alignment = self._invoker.get_alignment(self._full_request)
+ self._update_position()
+ self.set_transient_for(self._invoker.get_toplevel())
+
+ self._popdown_anim.stop()
+
+ if not immediate:
+ self._popup_anim.start()
+ else:
+ self.show()
+
+ self._secondary_anim.start()
+
+ def popdown(self, immediate=False):
+ logging.debug('Palette.popdown immediate %r' % immediate)
+ self._popup_anim.stop()
+
+ self._mouse_detector.stop()
+
+ if not immediate:
+ self._popdown_anim.start()
+ else:
+ self.hide()
+
+ def set_state(self, state):
+ if self.palette_state == state:
+ return
+
+ if state == self.PRIMARY:
+ self.menu.unembed()
+ self._secondary_box.hide()
+ elif state == self.SECONDARY:
+ self.menu.embed(self._menu_box)
+ self._secondary_box.show()
+ self._update_position()
+
+ self.palette_state = state
+
+ def _mouse_slow_cb(self, widget):
+ self._mouse_detector.stop()
+ self._palette_do_popup()
+
+ def _palette_do_popup(self):
+ immediate = False
+
+ if self.is_up():
+ self._popdown_anim.stop()
+ return
+
+ if self._group_id:
+ group = palettegroup.get_group(self._group_id)
+ if group and group.is_up():
+ immediate = True
+ group.popdown()
+
+ self.popup(immediate=immediate)
+
+ def _invoker_widget_changed_cb(self, invoker, spec):
+ self._update_accel_widget()
+
+ def _invoker_mouse_enter_cb(self, invoker):
+ self._mouse_detector.start()
+
+ def _invoker_mouse_leave_cb(self, invoker):
+ self._mouse_detector.stop()
+ self.popdown()
+
+ def _invoker_right_click_cb(self, invoker):
+ self.popup(immediate=True, state=self.SECONDARY)
+
+ def __enter_notify_event_cb(self, widget, event):
+ if event.detail != gtk.gdk.NOTIFY_INFERIOR and \
+ event.mode == gtk.gdk.CROSSING_NORMAL:
+ self._popdown_anim.stop()
+ self._secondary_anim.start()
+
+ def __leave_notify_event_cb(self, widget, event):
+ if event.detail != gtk.gdk.NOTIFY_INFERIOR and \
+ event.mode == gtk.gdk.CROSSING_NORMAL:
+ self.popdown()
+
+ def __show_cb(self, widget):
+ self.menu.set_active(True)
+
+ self._invoker.notify_popup()
+
+ self._up = True
+ self.emit('popup')
+
+ def __hide_cb(self, widget):
+ logging.debug('__hide_cb')
+ self.menu.set_active(False)
+
+ self._secondary_anim.stop()
+
+ if self._invoker:
+ self._invoker.notify_popdown()
+
+ self._up = False
+ self.emit('popdown')
+
+
+class PaletteActionBar(gtk.HButtonBox):
+ def add_action(self, label, icon_name=None):
+ button = gtk.Button(label)
+
+ if icon_name:
+ icon = Icon(icon_name)
+ button.set_image(icon)
+ icon.show()
+
+ self.pack_start(button)
+ button.show()
+
+class _Menu(_sugarext.Menu):
+ __gtype_name__ = 'SugarPaletteMenu'
+
+ __gsignals__ = {
+ 'item-inserted': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE, ([]))
+ }
+
+ def __init__(self, palette):
+ _sugarext.Menu.__init__(self)
+ self._palette = palette
+
+ def do_insert(self, item, position):
+ _sugarext.Menu.do_insert(self, item, position)
+ self.emit('item-inserted')
+ self.show()
+
+ def attach(self, child, left_attach, right_attach,
+ top_attach, bottom_attach):
+ _sugarext.Menu.attach(self, child, left_attach, right_attach,
+ top_attach, bottom_attach)
+ self.emit('item-inserted')
+ self.show()
+
+ def do_expose_event(self, event):
+ # Ignore the Menu expose, just do the MenuShell expose to prevent any
+ # border from being drawn here. A border is drawn by the palette object
+ # around everything.
+ gtk.MenuShell.do_expose_event(self, event)
+
+ def do_grab_notify(self, was_grabbed):
+ # Ignore grab_notify as the menu would close otherwise
+ pass
+
+ def do_deactivate(self):
+ self._palette.hide()
+
+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.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:
+ self._palette.set_state(Palette.SECONDARY)
+
+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, ([])),
+ 'right-click': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE, ([])),
+ 'focus-out': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE, ([]))
+ }
+
+ ANCHORED = 0
+ AT_CURSOR = 1
+
+ BOTTOM = [(0.0, 0.0, 0.0, 1.0),
+ (-1.0, 0.0, 1.0, 1.0)]
+ RIGHT = [(0.0, 0.0, 1.0, 0.0),
+ (0.0, -1.0, 1.0, 1.0)]
+ TOP = [(0.0, -1.0, 0.0, 0.0),
+ (-1.0, -1.0, 1.0, 0.0)]
+ LEFT = [(-1.0, 0.0, 0.0, 0.0),
+ (-1.0, -1.0, 0.0, 1.0)]
+
+ def __init__(self):
+ gobject.GObject.__init__(self)
+
+ self.parent = None
+
+ self._screen_area = gtk.gdk.Rectangle(0, 0, gtk.gdk.screen_width(),
+ gtk.gdk.screen_height())
+ self._position_hint = self.ANCHORED
+ self._cursor_x = -1
+ self._cursor_y = -1
+ self._palette = None
+
+ def attach(self, parent):
+ self.parent = parent
+
+ def detach(self):
+ self.parent = None
+ if self._palette is not None:
+ self._palette.destroy()
+ self._palette = None
+
+ def _get_position_for_alignment(self, alignment, palette_dim):
+ palette_halign = alignment[0]
+ palette_valign = alignment[1]
+ invoker_halign = alignment[2]
+ invoker_valign = alignment[3]
+
+ if self._cursor_x == -1 or self._cursor_y == -1:
+ display = gtk.gdk.display_get_default()
+ screen_, x, y, mask_ = display.get_pointer()
+ self._cursor_x = x
+ self._cursor_y = y
+
+ if self._position_hint is self.ANCHORED:
+ rect = self.get_rect()
+ else:
+ dist = style.PALETTE_CURSOR_DISTANCE
+ rect = gtk.gdk.Rectangle(self._cursor_x - dist,
+ self._cursor_y - dist,
+ dist * 2, dist * 2)
+
+ palette_width, palette_height = palette_dim
+
+ x = rect.x + rect.width * invoker_halign + \
+ palette_width * palette_halign
+
+ y = rect.y + rect.height * invoker_valign + \
+ palette_height * palette_valign
+
+ return gtk.gdk.Rectangle(int(x), int(y),
+ palette_width, palette_height)
+
+ def _in_screen(self, rect):
+ return rect.x >= self._screen_area.x and \
+ rect.y >= self._screen_area.y and \
+ rect.x + rect.width <= self._screen_area.width and \
+ rect.y + rect.height <= self._screen_area.height
+
+ def _get_area_in_screen(self, rect):
+ """Return area of rectangle visible in the screen"""
+
+ x1 = max(rect.x, self._screen_area.x)
+ y1 = max(rect.y, self._screen_area.y)
+ x2 = min(rect.x + rect.width,
+ self._screen_area.x + self._screen_area.width)
+ y2 = min(rect.y + rect.height,
+ self._screen_area.y + self._screen_area.height)
+
+ return (x2 - x1) * (y2 - y1)
+
+ def _get_alignments(self):
+ if self._position_hint is self.AT_CURSOR:
+ return [(0.0, 0.0, 1.0, 1.0),
+ (0.0, -1.0, 1.0, 0.0),
+ (-1.0, -1.0, 0.0, 0.0),
+ (-1.0, 0.0, 0.0, 1.0)]
+ else:
+ return self.BOTTOM + self.RIGHT + self.TOP + self.LEFT
+
+ def get_position_for_alignment(self, alignment, palette_dim):
+ rect = self._get_position_for_alignment(alignment, palette_dim)
+ if self._in_screen(rect):
+ return rect
+ else:
+ return None
+
+ def get_position(self, palette_dim):
+ alignment = self.get_alignment(palette_dim)
+ return self._get_position_for_alignment(alignment, palette_dim)
+
+ def get_alignment(self, palette_dim):
+ best_alignment = None
+ best_area = -1
+ for alignment in self._get_alignments():
+ pos = self._get_position_for_alignment(alignment, palette_dim)
+ if self._in_screen(pos):
+ return alignment
+
+ area = self._get_area_in_screen(pos)
+ if area > best_area:
+ best_alignment = alignment
+ best_area = area
+
+ # Palette horiz/vert alignment
+ ph = best_alignment[0]
+ pv = best_alignment[1]
+
+ # Invoker horiz/vert alignment
+ ih = best_alignment[2]
+ iv = best_alignment[3]
+
+ rect = self.get_rect()
+ screen_area = self._screen_area
+
+ if best_alignment in self.LEFT or best_alignment in self.RIGHT:
+ dtop = rect.y - screen_area.y
+ dbottom = screen_area.y + screen_area.height - rect.y - rect.width
+
+ iv = 0
+
+ # Set palette_valign to align to screen on the top
+ if dtop > dbottom:
+ pv = -float(dtop) / palette_dim[1]
+
+ # Set palette_valign to align to screen on the bottom
+ else:
+ pv = -float(palette_dim[1] - dbottom - rect.height) \
+ / palette_dim[1]
+
+ else:
+ dleft = rect.x - screen_area.x
+ dright = screen_area.x + screen_area.width - rect.x - rect.width
+
+ ih = 0
+
+ # Set palette_halign to align to screen on left
+ if dleft > dright:
+ ph = -float(dleft) / palette_dim[0]
+
+ # Set palette_halign to align to screen on right
+ else:
+ ph = -float(palette_dim[0] - dright - rect.width) \
+ / palette_dim[0]
+
+ return (ph, pv, ih, iv)
+
+ def has_rectangle_gap(self):
+ return False
+
+ def draw_rectangle(self, event, palette):
+ pass
+
+ def notify_popup(self):
+ pass
+
+ def notify_popdown(self):
+ self._cursor_x = -1
+ self._cursor_y = -1
+
+ def _ensure_palette_exists(self):
+ if self.parent and self.palette is None:
+ palette = self.parent.create_palette()
+ if palette:
+ self.palette = palette
+
+ def notify_mouse_enter(self):
+ self._ensure_palette_exists()
+ self.emit('mouse-enter')
+
+ def notify_mouse_leave(self):
+ self.emit('mouse-leave')
+
+ def notify_right_click(self):
+ self._ensure_palette_exists()
+ self.emit('right-click')
+
+ def get_palette(self):
+ return self._palette
+
+ def set_palette(self, palette):
+ if self._palette:
+ self._palette.props.invoker = None
+
+ self._palette = palette
+
+ if self._palette:
+ self._palette.props.invoker = self
+
+ palette = gobject.property(
+ type=object, setter=set_palette, getter=get_palette)
+
+class WidgetInvoker(Invoker):
+ def __init__(self, parent=None, widget=None):
+ Invoker.__init__(self)
+
+ self._widget = None
+ self._enter_hid = None
+ self._leave_hid = None
+ self._release_hid = None
+
+ if parent or widget:
+ self.attach_widget(parent, widget)
+
+ def attach_widget(self, parent, widget=None):
+ if widget:
+ self._widget = widget
+ else:
+ self._widget = parent
+
+ self.notify('widget')
+
+ self._enter_hid = self._widget.connect('enter-notify-event',
+ self.__enter_notify_event_cb)
+ self._leave_hid = self._widget.connect('leave-notify-event',
+ self.__leave_notify_event_cb)
+ self._release_hid = self._widget.connect('button-release-event',
+ self.__button_release_event_cb)
+
+ self.attach(parent)
+
+ def detach(self):
+ Invoker.detach(self)
+ self._widget.disconnect(self._enter_hid)
+ self._widget.disconnect(self._leave_hid)
+ self._widget.disconnect(self._release_hid)
+
+ def get_rect(self):
+ allocation = self._widget.get_allocation()
+ if self._widget.window is not None:
+ x, y = self._widget.window.get_origin()
+ else:
+ logging.warning(
+ "Trying to position palette with invoker that's not realized.")
+ x = 0
+ y = 0
+
+ if self._widget.flags() & gtk.NO_WINDOW:
+ x += allocation.x
+ y += allocation.y
+
+ width = allocation.width
+ height = allocation.height
+
+ return gtk.gdk.Rectangle(x, y, width, height)
+
+ def has_rectangle_gap(self):
+ return True
+
+ def draw_rectangle(self, event, palette):
+ if self._widget.flags() & gtk.NO_WINDOW:
+ x, y = self._widget.allocation.x, self._widget.allocation.y
+ else:
+ x = y = 0
+
+ wstyle = self._widget.get_style()
+ gap = _calculate_gap(self.get_rect(), palette.get_rect())
+
+ if gap:
+ wstyle.paint_box_gap(event.window, gtk.STATE_PRELIGHT,
+ gtk.SHADOW_IN, event.area, self._widget,
+ "palette-invoker", x, y,
+ self._widget.allocation.width,
+ self._widget.allocation.height,
+ gap[0], gap[1], gap[2])
+ else:
+ wstyle.paint_box(event.window, gtk.STATE_PRELIGHT,
+ gtk.SHADOW_IN, event.area, self._widget,
+ "palette-invoker", x, y,
+ self._widget.allocation.width,
+ self._widget.allocation.height)
+
+ def __enter_notify_event_cb(self, widget, event):
+ self.notify_mouse_enter()
+
+ def __leave_notify_event_cb(self, widget, event):
+ self.notify_mouse_leave()
+
+ def __button_release_event_cb(self, widget, event):
+ if event.button == 3:
+ self.notify_right_click()
+ return True
+ else:
+ return False
+
+ def get_toplevel(self):
+ return self._widget.get_toplevel()
+
+ def notify_popup(self):
+ Invoker.notify_popup(self)
+ self._widget.queue_draw()
+
+ def notify_popdown(self):
+ Invoker.notify_popdown(self)
+ self._widget.queue_draw()
+
+ def _get_widget(self):
+ return self._widget
+ widget = gobject.property(type=object, getter=_get_widget, setter=None)
+
+class CanvasInvoker(Invoker):
+ def __init__(self, parent=None):
+ Invoker.__init__(self)
+
+ self._position_hint = self.AT_CURSOR
+ self._motion_hid = None
+ self._release_hid = None
+ self._item = None
+
+ if parent:
+ self.attach(parent)
+
+ def attach(self, parent):
+ Invoker.attach(self, parent)
+
+ self._item = parent
+ self._motion_hid = self._item.connect('motion-notify-event',
+ self.__motion_notify_event_cb)
+ self._release_hid = self._item.connect('button-release-event',
+ self.__button_release_event_cb)
+
+ def detach(self):
+ Invoker.detach(self)
+ self._item.disconnect(self._motion_hid)
+ self._item.disconnect(self._release_hid)
+
+ def get_default_position(self):
+ return self.AT_CURSOR
+
+ 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)
+ else:
+ return gtk.gdk.Rectangle()
+
+ def __motion_notify_event_cb(self, button, event):
+ if event.detail == hippo.MOTION_DETAIL_ENTER:
+ self.notify_mouse_enter()
+ elif event.detail == hippo.MOTION_DETAIL_LEAVE:
+ self.notify_mouse_leave()
+
+ return False
+
+ def __button_release_event_cb(self, button, event):
+ if event.button == 3:
+ self.notify_right_click()
+ return True
+ else:
+ return False
+
+ def get_toplevel(self):
+ return hippo.get_canvas_for_item(self._item).get_toplevel()
+
+class ToolInvoker(WidgetInvoker):
+ def __init__(self, parent=None):
+ WidgetInvoker.__init__(self)
+
+ if parent:
+ self.attach_tool(parent)
+
+ def attach_tool(self, widget):
+ self.attach_widget(widget, widget.child)
+
+ def _get_alignments(self):
+ parent = self._widget.get_parent()
+ if parent is None:
+ return WidgetInvoker._get_alignments()
+
+ if parent.get_orientation() is gtk.ORIENTATION_HORIZONTAL:
+ return self.BOTTOM + self.TOP
+ else:
+ return self.LEFT + self.RIGHT