#------------------------------------------------------------------------------
# Copyright (c) 2012, Enthought, Inc.
# All rights reserved.
#------------------------------------------------------------------------------
from .qt.QtCore import QSize
from .qt.QtGui import QFrame
from .qt_control import QtControl
# A mapping from Enaml orientation to frame shape enum.
_SHAPE_MAP = {
'horizontal': QFrame.HLine,
'vertical': QFrame.VLine,
}
# A mapping from Enaml line style to frame shadow enum.
_SHADOW_MAP = {
'sunken': QFrame.Sunken,
'raised': QFrame.Raised,
'plain': QFrame.Plain
}
class QSeparator(QFrame):
""" A QFrame subclass which acts as a separator.
This subclass reimplements the sizeHint method to compute a hint
which is appropriate for a frame being used as a vertical or
horizontal separator line.
"""
def sizeHint(self):
# The default sizeHint method returns (-1, 3) or (3, -1) when
# the frame is used as a separator, regardless of the computed
# frame width. This override corrects that behavior.
hint = super(QSeparator, self).sizeHint()
if self.frameShadow() in (QFrame.Raised, QFrame.Sunken):
shape = self.frameShape()
if shape == QFrame.HLine:
hint = QSize(hint.width(), max(3, self.frameWidth() * 2))
elif shape == QFrame.VLine:
hint = QSize(max(3, self.frameWidth() * 2), hint.height())
return hint
[docs]class QtSeparator(QtControl):
""" A Qt implementation of an Enaml Separator.
"""
[docs] def create_widget(self, parent, tree):
""" Create underlying QSeparator control.
"""
return QSeparator(parent)
[docs] def create(self, tree):
""" Create and initialize the underlying widget.
"""
super(QtSeparator, self).create(tree)
self.set_orientation(tree['orientation'])
self.set_line_style(tree['line_style'])
self.set_line_width(tree['line_width'])
self.set_midline_width(tree['midline_width'])
#--------------------------------------------------------------------------
# Message Handling
#--------------------------------------------------------------------------
[docs] def on_action_set_orientation(self, content):
""" Handle the 'set_orientation' action from the Enaml widget.
"""
self.set_orientation(content['orientation'])
self.size_hint_updated()
[docs] def on_action_set_line_style(self, content):
""" Handle the 'set_line_style' action from the Enaml widget.
"""
self.set_line_style(content['line_style'])
self.size_hint_updated()
[docs] def on_action_set_line_width(self, content):
""" Handle the 'set_line_width' action from the Enaml widget.
"""
self.set_line_width(content['line_width'])
self.size_hint_updated()
self.widget().update()
[docs] def on_action_set_midline_width(self, content):
""" Handle the 'set_midline_width' action from the Enaml widget.
"""
self.set_midline_width(content['midline_width'])
self.size_hint_updated()
self.widget().update()
#--------------------------------------------------------------------------
# Widget Update Methods
#--------------------------------------------------------------------------
[docs] def set_orientation(self, orientation):
""" Set the orientation of the underlying widget.
"""
self.widget().setFrameShape(_SHAPE_MAP[orientation])
[docs] def set_line_style(self, style):
""" Set the line style of the underlying widget.
"""
self.widget().setFrameShadow(_SHADOW_MAP[style])
[docs] def set_line_width(self, width):
""" Set the line width of the underlying widget.
"""
self.widget().setLineWidth(width)
[docs] def set_midline_width(self, width):
""" Set the midline width of the underlying widget.
"""
self.widget().setMidLineWidth(width)