def parent(model, qindex):
"""
A common convention used in models that expose tree data structures is
that only items in the first column have children. For that case, when
reimplementing this function in a subclass the column of the returned
QModelIndex would be 0.
When reimplementing this function in a subclass, be careful to avoid
calling QModelIndex member functions, such as QModelIndex.parent(),
since indexes belonging to your model will simply call your
implementation, leading to infinite recursion.
Returns:
the parent of the model item with the given index. If the item has
no parent, an invalid QModelIndex is returned.
"""
model.lazy_checks()
if qindex.isValid():
node = qindex.internalPointer()
#<HACK>
if not isinstance(node, _atn.TreeNode):
print("WARNING: tried to access parent of %r type object" % type(node))
return QtCore.QModelIndex()
#assert node.__dict__, "node.__dict__=%r" % node.__dict__
#</HACK>
parent_node = node.get_parent()
parent_id = parent_node.get_id()
if parent_id == -1 or parent_id is None:
return QtCore.QModelIndex()
row = parent_node.get_row()
col = model.col_level_list.index(parent_node.get_level())
return model.createIndex(row, col, parent_node)
return QtCore.QModelIndex()
def index(model, row, column, parent=QtCore.QModelIndex()):
"""
Qt Override
Returns:
the index of the item in the model specified by the given row,
column and parent index. When reimplementing this function in a
subclass, call createIndex() to generate model indexes that other
components can use to refer to items in your model.
NOTE:
Object must be specified to sort delegates.
"""
model.lazy_checks()
if not parent.isValid():
# This is a top level == 0 index
#print('[model.index] ROOT: row=%r, col=%r' % (row, column))
if row >= model.root_node.get_num_children():
return QtCore.QModelIndex()
#import traceback
#traceback.print_stack()
node = model.root_node[row]
if model.col_level_list[column] != node.get_level():
return QtCore.QModelIndex()
qtindex = model.createIndex(row, column, object=node)
return qtindex
else:
# This is a child level > 0 index
parent_node = parent.internalPointer()
node = parent_node[row]
if ut.USE_ASSERT:
assert isinstance(parent_node, _atn.TreeNode), type(parent_node)
assert isinstance(node, _atn.TreeNode), type(node)
return model.createIndex(row, column, object=node)
def createEditor(self, parent, option, index):
combo = QtGui.QComboBox(parent)
combo.addItems(['option1', 'option2', 'option3'])
#self.connect(combo.currentIndexChanged, self.currentIndexChanged)
# FIXME: Change to newstyle signal slot
self.connect(combo, QtCore.SIGNAL("currentIndexChanged(int)"), self,
QtCore.SLOT("currentIndexChanged()"))
return combo
def sizeHint(dgt, option, qtindex):
view = dgt.parent()
offset = view.verticalOffset() + option.rect.y()
try:
thumb_path = dgt.get_thumb_path_if_exists(view, offset, qtindex)
if thumb_path is not None:
# Read the precomputed thumbnail
width, height = read_thumb_size(thumb_path)
return QtCore.QSize(width, height)
else:
#print("[APIThumbDelegate] Name not found")
return QtCore.QSize()
except Exception as ex:
print("Error in APIThumbDelegate")
ut.printex(ex, 'Error in APIThumbDelegate', tb=True)
return QtCore.QSize()
def data(model, index, role=Qt.DisplayRole):
""" Returns the data to display """
if not index.isValid():
return None
flags = model.flags(index)
if role == Qt.TextAlignmentRole:
return model.get_column_alignment(index.column())
if role == Qt.BackgroundRole and (flags & Qt.ItemIsEditable
or flags & Qt.ItemIsUserCheckable):
return QtCore.QVariant(QtGui.QColor(250, 240, 240))
if role == Qt.DisplayRole or role == Qt.CheckStateRole:
data = model.get_data(index)
var = qtype.cast_into_qt(data, role, flags)
return var
else:
return QtCore.QVariant()
def paint(dgt, painter, option, qtindex):
"""
TODO: prevent recursive paint
"""
view = dgt.parent()
offset = view.verticalOffset() + option.rect.y()
# Check if still in viewport
if view_would_not_be_visible(view, offset):
return None
try:
thumb_path = dgt.get_thumb_path_if_exists(view, offset, qtindex)
if thumb_path is not None:
# Check if still in viewport
if view_would_not_be_visible(view, offset):
return None
# Read the precomputed thumbnail
qimg = read_thumb_as_qimg(thumb_path)
width, height = qimg.width(), qimg.height()
# Adjust the cell size to fit the image
dgt.adjust_thumb_cell_size(qtindex, width, height)
# Check if still in viewport
if view_would_not_be_visible(view, offset):
return None
# Paint image on an item in some view
painter.save()
painter.setClipRect(option.rect)
painter.translate(option.rect.x(), option.rect.y())
painter.drawImage(QtCore.QRectF(0, 0, width, height), qimg)
painter.restore()
except Exception as ex:
# PSA: Always report errors on Exceptions!
print('Error in APIThumbDelegate')
ut.printex(ex, 'Error in APIThumbDelegate')
painter.save()
painter.restore()
def source_to_proxy(self, row, col, parent=QtCore.QModelIndex()):
source_model = self.sourceModel()
source_cols = source_model.columnCount(parent=parent)
r, c, p = row, col, parent
r2 = int(math.floor(r / self._nd))
c2 = ((r % self._nd) * source_cols) + c
p2 = p
return r2, c2, p2
def proxy_to_source(self, row, col, parent=QtCore.QModelIndex()):
source_model = self.sourceModel()
source_cols = source_model.columnCount(parent=parent)
r, c, p = row, col, parent
r2 = int(math.floor(c / source_cols)) + (r * self._nd)
c2 = c % source_cols
p2 = p
return r2, c2, p2
class GUILoggingSender(QtCore.QObject):
write_ = QtCore.pyqtSignal(str)
def __init__(self, write_slot):
QtCore.QObject.__init__(self)
self.write_.connect(write_slot)
def write_gui(self, msg):
self.write_.emit(str(msg))
def _init_table_behavior(view):
""" Table behavior
SeeAlso:
api_item_view._init_itemview_behavior
"""
# Allow sorting by column
view.setCornerButtonEnabled(False)
view.setShowGrid(True)
view.setIconSize(QtCore.QSize(64, 64))
def mapFromSource(self, sourceIndex):
""" returns index into proxy model """
if sourceIndex is None:
return None
if sourceIndex.isValid():
r2, c2, p2 = self.source_to_proxy(sourceIndex.row(),
sourceIndex.column(),
sourceIndex.parent())
proxyIndex = self.index(r2, c2, p2)
else:
proxyIndex = QtCore.QModelIndex()
return proxyIndex
def mapToSource(self, proxyIndex):
""" returns index into original model """
if proxyIndex is None:
return None
if proxyIndex.isValid():
r2, c2, p2 = self.proxy_to_source(proxyIndex.row(),
proxyIndex.column())
sourceIndex = self.sourceModel().index(
r2, c2, parent=p2) # self.sourceModel().root_node[r2]
else:
sourceIndex = QtCore.QModelIndex()
return sourceIndex
def ping_python_interpreter(frequency=420): # 4200):
""" Create a QTimer which lets the python catch ctrl+c """
if not QUIET and VERBOSE:
print('[guitool] pinging python interpreter for ctrl+c freq=%r' %
frequency)
timer = QtCore.QTimer()
def ping_func():
#print('lub dub')
return None
timer.ping_func = ping_func
timer.timeout.connect(timer.ping_func)
timer.start(frequency)
return timer
def rowCount(model, parent=QtCore.QModelIndex()):
""" Qt Override """
#model.lazy_checks()
if not parent.isValid():
# Root row count
if len(model.level_index_list) == 0:
return 0
nRows = len(model.level_index_list)
#print('* nRows=%r' % nRows)
return nRows
else:
node = parent.internalPointer()
nRows = node.get_num_children()
#print('+ nRows=%r' % nRows)
return nRows
def _get_row_id(model, qtindex=QtCore.QModelIndex()):
"""
returns the id (specified by iders i.e. an ibeis rowid) from qtindex
"""
if qtindex.isValid():
node = qtindex.internalPointer()
if ut.USE_ASSERT:
try:
assert isinstance(node, _atn.TreeNode), 'type(node)=%r, node=%r' % (type(node), node)
except AssertionError as ex:
ut.printex(ex, 'error in _get_row_id', keys=['model', 'qtindex', 'node'])
raise
try:
id_ = node.get_id()
except AttributeError as ex:
ut.printex(ex, key_list=['node', 'model', 'qtindex'])
raise
return id_
def _get_adjacent_qtindex(model, qtindex=QtCore.QModelIndex(), offset=1):
# check qtindex
if not qtindex.isValid():
return None
node = qtindex.internalPointer()
# check node
try:
if ut.USE_ASSERT:
assert isinstance(node, _atn.TreeNode), type(node)
except AssertionError as ex:
ut.printex(ex, key_list=['node'], pad_stdout=True)
raise
# get node parent
try:
node_parent = node.get_parent()
except Exception as ex:
ut.printex(ex, key_list=['node'], reraise=False, pad_stdout=True)
raise
# parent_node check
if node_parent is None:
print('[model._get_adjacent_qtindex] node_parent is None!')
return None
# Offset to find the next qtindex
next_index = node_parent.child_index(node) + offset
nChildren = node_parent.get_num_children()
# check next index validitiy
if next_index >= 0 and next_index < nChildren:
next_node = node_parent.get_child(next_index)
next_level = next_node.get_level()
col = model.col_level_list.index(next_level)
row = next_node.get_row()
# Create qtindex for the adjacent note
parent_qtindex = model.parent(qtindex)
next_qtindex = model.index(row, col, parent_qtindex)
return next_qtindex
else:
# There is no adjacent node
return None
def sizeHint(option, qindex):
# QStyleOptionViewItem option
return QtCore.QSize(50, 50)
def columnCount(model, parent=QtCore.QModelIndex()):
""" Qt Override """
return len(model.col_name_list)
def index(model, row, column, parent=QtCore.QModelIndex()):
""" Qt Override """
return model.createIndex(row, column)
def headerData(model, section, orientation, role=Qt.DisplayRole):
""" Qt Override """
if role == Qt.DisplayRole and orientation == Qt.Horizontal:
return model.get_niceheader(section)
else:
return QtCore.QVariant()
def rowCount(model, parent=QtCore.QModelIndex()):
""" Qt Override """
return len(model.row_sortx)
def source_to_proxy(self, row, col, parent=QtCore.QModelIndex()):
r2, c2, p2 = row, col, parent
return r2, c2, p2
def columnCount(model, parent=QtCore.QModelIndex()):
""" Qt Override """
# FOR NOW THE COLUMN COUNT IS CONSTANT
model.lazy_checks()
return len(model.col_name_list)
def columnCount(self, parent=QtCore.QModelIndex()):
source_cols = self.sourceModel().columnCount(parent=parent)
cols = self._nd * source_cols
#print('StripeProxyModel.columnCount(): %r %r' % (source_cols, cols))
return int(cols)
class APIButtonDelegate(DELEGATE_BASE):
button_clicked = QtCore.pyqtSignal(QtCore.QModelIndex)
def __init__(dgt, parent=None):
assert parent is not None, 'parent must be a view'
DELEGATE_BASE.__init__(dgt, parent)
# FIXME: I don't like this state in the delegate, as it renders all
# buttons
dgt._pressed = None
dgt.button_clicked.connect(dgt.on_button_click)
def get_index_butkw(dgt, qtindex):
""" The model data for a button should be a (text, callback) tuple. OR
it could be a function which accepts an qtindex and returns a button """
data = qtindex.model().data(qtindex, QtCore.Qt.DisplayRole)
# Get info
if isinstance(data, tuple):
buttontup = data
elif utool.is_funclike(data):
func = data
buttontup = func(qtindex)
else:
raise AssertionError('bad type')
text, callback = buttontup[0:2]
butkw = {
#'parent': dgt.parent(),
'text': text,
'clicked': callback,
}
if len(buttontup) > 2:
butkw['bgcolor'] = buttontup[2]
butkw['fgcolor'] = (0, 0, 0)
return butkw
def paint(dgt, painter, option, qtindex):
painter.save()
butkw = dgt.get_index_butkw(qtindex)
# FIXME: I don't want to create a widget each time just
# so I can access the button's style
button = guitool_components.newButton(**butkw)
pressed = dgt.is_qtindex_pressed(qtindex)
view = dgt.parent()
paint_button(painter, option, button=button, pressed=pressed,
view=view, **butkw)
painter.restore()
def is_qtindex_pressed(dgt, qtindex):
return dgt._pressed is not None and dgt._pressed == (qtindex.row(), qtindex.column())
@QtCore.pyqtSlot(QtCore.QModelIndex)
def on_button_click(dgt, qtindex):
if utool.VERBOSE:
print('pressed button')
butkw = dgt.get_index_butkw(qtindex)
callback = butkw['clicked']
callback()
def editorEvent(dgt, event, model, option, qtindex):
# http://stackoverflow.com/questions/14585575/button-delegate-issue
#print('editor event')
event_type = event.type()
if event_type == QtCore.QEvent.MouseButtonPress:
# store the position that is clicked
dgt._pressed = (qtindex.row(), qtindex.column())
if utool.VERBOSE:
print('store')
return True
elif event_type == QtCore.QEvent.MouseButtonRelease:
if dgt.is_qtindex_pressed(qtindex):
print('emit')
dgt.button_clicked.emit(qtindex)
pass
elif dgt._pressed is not None:
# different place.
# force a repaint on the pressed cell by emitting a dataChanged
# Note: This is probably not the best idea
# but I've yet to find a better solution.
print('repaint')
oldIndex = qtindex.model().index(*dgt._pressed)
dgt._pressed = None
qtindex.model().dataChanged.emit(oldIndex, oldIndex)
pass
dgt._pressed = None
#print('mouse release')
return True
elif event_type == QtCore.QEvent.Leave:
print('leave')
elif event_type == QtCore.QEvent.MouseButtonDblClick:
print('doubleclick')
else:
print('event_type = %r' % event_type)
return DELEGATE_BASE.editorEvent(dgt, event, model, option, qtindex)
def sizeHint(qres_wgt):
# should eventually improve this to use the widths of the header columns
return QtCore.QSize(1100, 500)
def index(self, row, col, parent=QtCore.QModelIndex()):
if (row, col) != (-1, -1):
proxyIndex = self.createIndex(row, col, parent)
else:
proxyIndex = QtCore.QModelIndex()
return proxyIndex
def rowCount(self, parent=QtCore.QModelIndex()):
sourceParent = self.mapToSource(parent)
source_rows = self.sourceModel().rowCount(parent=sourceParent)
rows = math.ceil(source_rows / self._nd)
#print('StripeProxyModel.rowCount(): %r %r' % (source_rows, rows))
return int(rows)
