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# Copyright (C) 2010 Matthew McGowan
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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 3 of the License, or
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# (at your option) any later version.
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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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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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from gettext import gettext as _
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DEFAULT_PART_SIZE = (29, -1)
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DEFAULT_ARROW_SIZE = (12, 12)
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class BackForwardButton(gtk.HBox):
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__gsignals__ = {'left-clicked':(gobject.SIGNAL_RUN_LAST,
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'right-clicked':(gobject.SIGNAL_RUN_LAST,
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def __init__(self, part_size=None):
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gtk.HBox.__init__(self)
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self.theme = mkit.get_mkit_theme()
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self.separator = SeparatorPart()
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part_size = part_size or DEFAULT_PART_SIZE
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if self.get_direction() != gtk.TEXT_DIR_RTL:
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self.left = ButtonPartLeft('left-clicked', part_size)
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self.right = ButtonPartRight('right-clicked', part_size)
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self.set_button_atk_info_ltr()
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self.left = ButtonPartRight('left-clicked', part_size, gtk.ARROW_LEFT)
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self.right = ButtonPartLeft('right-clicked', part_size, gtk.ARROW_RIGHT)
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self.set_button_atk_info_rtl()
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atk_obj = self.get_accessible()
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atk_obj.set_name(_('History Navigation'))
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atk_obj.set_description(_('Navigate forwards and backwards.'))
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atk_obj.set_role(atk.ROLE_PANEL)
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self.pack_start(self.left)
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self.pack_start(self.separator, False)
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self.pack_end(self.right)
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self.separator.connect_after("style-set", self._on_style_set)
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self.connect_after('size-allocate', self._on_size_allocate)
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def set_button_atk_info_ltr(self):
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atk_obj = self.left.get_accessible()
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atk_obj.set_name(_('Back Button'))
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atk_obj.set_description(_('Navigates back.'))
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atk_obj.set_role(atk.ROLE_PUSH_BUTTON)
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atk_obj = self.right.get_accessible()
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atk_obj.set_name(_('Forward Button'))
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atk_obj.set_description(_('Navigates forward.'))
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atk_obj.set_role(atk.ROLE_PUSH_BUTTON)
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def set_button_atk_info_rtl(self):
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atk_obj = self.right.get_accessible()
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atk_obj.set_name(_('Back Button'))
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atk_obj.set_description(_('Navigates back.'))
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atk_obj.set_role(atk.ROLE_PUSH_BUTTON)
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atk_obj = self.left.get_accessible()
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atk_obj.set_name(_('Forward Button'))
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atk_obj.set_description(_('Navigates forward.'))
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atk_obj.set_role(atk.ROLE_PUSH_BUTTON)
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def set_use_hand_cursor(self, use_hand):
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self.use_hand = use_hand
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def _on_style_set(self, widget, oldstyle):
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# when alloc.width == 1, this is typical of an unallocated widget,
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# lets not break a sweat for nothing...
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if self.allocation.width == 1:
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old_xthickness = self.theme['xthickness']
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self.theme = mkit.get_mkit_theme()
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if old_xthickness > self.theme['xthickness']:
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self.queue_draw_area(a.x, a.y,
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a.width+self.theme['xthickness'], a.height)
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def _on_size_allocate(self, widget, allocation):
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def draw(self, cr, expose_area, left_alpha=1.0, right_alpha=1.0):
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self.separator.alpha = max(left_alpha, right_alpha)
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self.separator.queue_draw()
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self.left.draw(cr, expose_area, left_alpha)
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self.right.draw(cr, expose_area, right_alpha)
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class SeparatorPart(gtk.DrawingArea):
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gtk.DrawingArea.__init__(self)
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self.theme = mkit.get_mkit_theme()
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self.set_size_request(self.theme['xthickness'], -1)
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atk_obj = self.get_accessible()
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atk_obj.set_role(atk.ROLE_SEPARATOR)
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self.connect("expose-event", self._on_expose)
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self.connect("style-set", self._on_style_set)
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def _on_expose(self, widget, event):
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parent = self.get_parent()
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if not parent: return
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cr = widget.window.cairo_create()
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cr.rectangle(event.area)
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if self.alpha == 1.0:
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cr.set_source_rgb(*self.theme.dark_line[self.state].floats())
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r, g, b = self.theme.dark_line[self.state].floats()
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cr.set_source_rgba(r, g, b, self.alpha)
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def _on_style_set(self, widget, old_style):
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self.theme = mkit.get_mkit_theme()
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self.set_size_request(self.theme['xthickness'], -1)
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class ButtonPart(gtk.EventBox):
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def __init__(self, arrow_type, signal_name, part_size):
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gtk.EventBox.__init__(self)
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self.is_active = False
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self.set_redraw_on_allocate(False)
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self.set_visible_window(False)
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self.set_size_request(*part_size)
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self.shape = mkit.SHAPE_RECTANGLE
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self.button_down = False
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self.add(gtk.Arrow(arrow_type, gtk.SHADOW_OUT))
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self.set_flags(gtk.CAN_FOCUS)
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self.set_events(gtk.gdk.ENTER_NOTIFY_MASK|
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gtk.gdk.LEAVE_NOTIFY_MASK|
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gtk.gdk.BUTTON_PRESS_MASK|
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gtk.gdk.BUTTON_RELEASE_MASK)
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self.connect("enter-notify-event", self._on_enter)
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self.connect("leave-notify-event", self._on_leave)
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self.connect("button-press-event", self._on_press)
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self.connect("button-release-event", self._on_release, signal_name)
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self.connect("key-press-event", self._on_key_press)
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self.connect("key-release-event", self._on_key_release, signal_name)
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def set_sensitive(self, is_sensitive):
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self.set_state(gtk.STATE_NORMAL)
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super(ButtonPart, self).set_sensitive(is_sensitive)
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def set_active(self, is_active):
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self.shadow_type = gtk.SHADOW_IN
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self.set_state(gtk.STATE_ACTIVE)
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self.shadow_type = gtk.SHADOW_OUT
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self.set_state(gtk.STATE_NORMAL)
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def _on_enter(self, widget, event):
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if self.state == gtk.STATE_INSENSITIVE: return
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if not self.button_down:
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self.set_state(gtk.STATE_PRELIGHT)
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self.set_active(True)
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if self.parent.use_hand:
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self.window.set_cursor(gtk.gdk.Cursor(gtk.gdk.HAND2))
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def _on_key_press(self, widget, event):
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# react to spacebar, enter, numpad-enter
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if event.keyval in (32, 65293, 65421):
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self.set_state(gtk.STATE_ACTIVE)
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def _on_key_release(self, widget, event, signal_name):
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# react to spacebar, enter, numpad-enter
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if event.keyval in (32, 65293, 65421):
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self.set_state(gtk.STATE_SELECTED)
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self.get_parent().emit(signal_name, event)
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def _on_leave(self, widget, event):
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if self.state == gtk.STATE_INSENSITIVE: return
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self.set_active(False)
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if self.parent.use_hand:
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self.window.set_cursor(None)
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def _on_press(self, widget, event):
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if self.state == gtk.STATE_INSENSITIVE: return
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self.button_down = True
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self.set_active(True)
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def _on_release(self, widget, event, signal_name):
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if self.state == gtk.STATE_INSENSITIVE: return
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self.button_down = False
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self.shadow_type = gtk.SHADOW_OUT
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p = gtk.gdk.device_get_core_pointer()
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x, y = p.get_state(widget.window)[0]
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rr = gtk.gdk.region_rectangle(widget.allocation)
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if rr.point_in(int(x), int(y)):
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self.set_state(gtk.STATE_PRELIGHT)
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self.get_parent().emit(signal_name, event)
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self.set_state(gtk.STATE_NORMAL)
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def do_draw(self, cr, a, expose_area, xo, wo, alpha):
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if gtk.gdk.region_rectangle(expose_area).rect_in(a) == gtk.gdk.OVERLAP_RECTANGLE_OUT:
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if not self.parent.get_property('visible'): return
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self.parent.theme.paint_bg(cr,
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a.width+wo, a.height,
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self.style.paint_focus(self.window,
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(a.x+4, a.y+4, a.width-8, a.height-8),
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a.width-8, a.height-8)
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class ButtonPartLeft(ButtonPart):
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def __init__(self, sig_name, part_size, arrow_type=gtk.ARROW_LEFT):
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ButtonPart.__init__(self,
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self.connect("expose-event", self._on_expose)
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def _on_expose(self, widget, event):
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cr = self.window.cairo_create()
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self.draw(cr, event.area, alpha=1.0)
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def draw(self, cr, expose_area, alpha):
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r = int(self.parent.theme['curvature'])
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class ButtonPartRight(ButtonPart):
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def __init__(self, sig_name, part_size, arrow_type=gtk.ARROW_RIGHT):
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ButtonPart.__init__(self,
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self.connect("expose-event", self._on_expose)
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def _on_expose(self, widget, event):
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cr = self.window.cairo_create()
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self.draw(cr, event.area, alpha=1.0)
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def draw(self, cr, expose_area, alpha):
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r = int(self.parent.theme['curvature'])
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if __name__ == "__main__":
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win.set_default_size(300,100)
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backforward = BackForwardButton()
added
removed
softwarecenter/ui/gtk/widgets/backforward.py
