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Diffstat (limited to 'silx/gui/plot/items/marker.py')
| -rw-r--r-- | silx/gui/plot/items/marker.py | 266 |
1 files changed, 0 insertions, 266 deletions
diff --git a/silx/gui/plot/items/marker.py b/silx/gui/plot/items/marker.py deleted file mode 100644 index 80ca0b6..0000000 --- a/silx/gui/plot/items/marker.py +++ /dev/null @@ -1,266 +0,0 @@ -# coding: utf-8 -# /*########################################################################## -# -# Copyright (c) 2017-2019 European Synchrotron Radiation Facility -# -# Permission is hereby granted, free of charge, to any person obtaining a copy -# of this software and associated documentation files (the "Software"), to deal -# in the Software without restriction, including without limitation the rights -# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -# copies of the Software, and to permit persons to whom the Software is -# furnished to do so, subject to the following conditions: -# -# The above copyright notice and this permission notice shall be included in -# all copies or substantial portions of the Software. -# -# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -# THE SOFTWARE. -# -# ###########################################################################*/ -"""This module provides markers item of the :class:`Plot`. -""" - -__authors__ = ["T. Vincent"] -__license__ = "MIT" -__date__ = "06/03/2017" - - -import logging - -from ....utils.proxy import docstring -from .core import (Item, DraggableMixIn, ColorMixIn, LineMixIn, SymbolMixIn, - ItemChangedType) - - -_logger = logging.getLogger(__name__) - - -class MarkerBase(Item, DraggableMixIn, ColorMixIn): - """Base class for markers""" - - _DEFAULT_COLOR = (0., 0., 0., 1.) - """Default color of the markers""" - - def __init__(self): - Item.__init__(self) - DraggableMixIn.__init__(self) - ColorMixIn.__init__(self) - - self._text = '' - self._x = None - self._y = None - self._constraint = self._defaultConstraint - - def _addRendererCall(self, backend, - symbol=None, linestyle='-', linewidth=1): - """Perform the update of the backend renderer""" - return backend.addMarker( - x=self.getXPosition(), - y=self.getYPosition(), - legend=self.getLegend(), - text=self.getText(), - color=self.getColor(), - selectable=self.isSelectable(), - draggable=self.isDraggable(), - symbol=symbol, - linestyle=linestyle, - linewidth=linewidth, - constraint=self.getConstraint()) - - def _addBackendRenderer(self, backend): - """Update backend renderer""" - raise NotImplementedError() - - @docstring(DraggableMixIn) - def drag(self, from_, to): - self.setPosition(to[0], to[1]) - - def isOverlay(self): - """Return true if marker is drawn as an overlay. - - A marker is an overlay if it is draggable. - - :rtype: bool - """ - return self.isDraggable() - - def getText(self): - """Returns marker text. - - :rtype: str - """ - return self._text - - def setText(self, text): - """Set the text of the marker. - - :param str text: The text to use - """ - text = str(text) - if text != self._text: - self._text = text - self._updated(ItemChangedType.TEXT) - - def getXPosition(self): - """Returns the X position of the marker line in data coordinates - - :rtype: float or None - """ - return self._x - - def getYPosition(self): - """Returns the Y position of the marker line in data coordinates - - :rtype: float or None - """ - return self._y - - def getPosition(self): - """Returns the (x, y) position of the marker in data coordinates - - :rtype: 2-tuple of float or None - """ - return self._x, self._y - - def setPosition(self, x, y): - """Set marker position in data coordinates - - Constraint are applied if any. - - :param float x: X coordinates in data frame - :param float y: Y coordinates in data frame - """ - x, y = self.getConstraint()(x, y) - x, y = float(x), float(y) - if x != self._x or y != self._y: - self._x, self._y = x, y - self._updated(ItemChangedType.POSITION) - - def getConstraint(self): - """Returns the dragging constraint of this item""" - return self._constraint - - def _setConstraint(self, constraint): # TODO support update - """Set the constraint. - - This is private for now as update is not handled. - - :param callable constraint: - :param constraint: A function filtering item displacement by - dragging operations or None for no filter. - This function is called each time the item is - moved. - This is only used if isDraggable returns True. - :type constraint: None or a callable that takes the coordinates of - the current cursor position in the plot as input - and that returns the filtered coordinates. - """ - if constraint is None: - constraint = self._defaultConstraint - assert callable(constraint) - self._constraint = constraint - - @staticmethod - def _defaultConstraint(*args): - """Default constraint not doing anything""" - return args - - -class Marker(MarkerBase, SymbolMixIn): - """Description of a marker""" - - _DEFAULT_SYMBOL = '+' - """Default symbol of the marker""" - - def __init__(self): - MarkerBase.__init__(self) - SymbolMixIn.__init__(self) - - self._x = 0. - self._y = 0. - - def _addBackendRenderer(self, backend): - return self._addRendererCall(backend, symbol=self.getSymbol()) - - def _setConstraint(self, constraint): - """Set the constraint function of the marker drag. - - It also supports 'horizontal' and 'vertical' str as constraint. - - :param constraint: The constraint of the dragging of this marker - :type: constraint: callable or str - """ - if constraint == 'horizontal': - constraint = self._horizontalConstraint - elif constraint == 'vertical': - constraint = self._verticalConstraint - - super(Marker, self)._setConstraint(constraint) - - def _horizontalConstraint(self, _, y): - return self.getXPosition(), y - - def _verticalConstraint(self, x, _): - return x, self.getYPosition() - - -class _LineMarker(MarkerBase, LineMixIn): - """Base class for line markers""" - - def __init__(self): - MarkerBase.__init__(self) - LineMixIn.__init__(self) - - def _addBackendRenderer(self, backend): - return self._addRendererCall(backend, - linestyle=self.getLineStyle(), - linewidth=self.getLineWidth()) - - -class XMarker(_LineMarker): - """Description of a marker""" - - def __init__(self): - _LineMarker.__init__(self) - self._x = 0. - - def setPosition(self, x, y): - """Set marker line position in data coordinates - - Constraint are applied if any. - - :param float x: X coordinates in data frame - :param float y: Y coordinates in data frame - """ - x, _ = self.getConstraint()(x, y) - x = float(x) - if x != self._x: - self._x = x - self._updated(ItemChangedType.POSITION) - - -class YMarker(_LineMarker): - """Description of a marker""" - - def __init__(self): - _LineMarker.__init__(self) - self._y = 0. - - def setPosition(self, x, y): - """Set marker line position in data coordinates - - Constraint are applied if any. - - :param float x: X coordinates in data frame - :param float y: Y coordinates in data frame - """ - _, y = self.getConstraint()(x, y) - y = float(y) - if y != self._y: - self._y = y - self._updated(ItemChangedType.POSITION) |