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# coding: utf-8
# /*##########################################################################
#
# Copyright (C) 2016-2018 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.
#
# ###########################################################################*/
__authors__ = ["V. Valls"]
__license__ = "MIT"
__date__ = "16/10/2020"
import numpy
from .DataModel import DataModel
class PlotViewModel(DataModel):
"""This model allow to store and restitute a plot view.
Stored data can be applyed to another plot in order to synchronize
location of the data coords.
"""
def __getRangeInPixel(self, plot):
"""Returns the size of the axis in pixel"""
bounds = plot.getPlotBoundsInPixels()
# bounds: left, top, width, height
return numpy.array([bounds[2], bounds[3]])
def __getMinMaxPixelCoord(self, plot):
"""Returns the size of the axis in pixel"""
bounds = plot.getPlotBoundsInPixels()
# bounds: left, top, width, height
coord1 = numpy.array([bounds[0], bounds[1]])
coord2 = coord1 + numpy.array([bounds[2], bounds[3]])
return coord1, coord2
def __getAxisDataRange(self, axis):
limits = axis.getLimits()
dataRange = limits[1] - limits[0]
dataRange = abs(dataRange)
return dataRange
def __getDataRange(self, plot):
return numpy.array([self.__getAxisDataRange(plot.getXAxis()),
self.__getAxisDataRange(plot.getYAxis())])
def __getPixelSize(self, plot):
dataRange = self.__getDataRange(plot)
pixelRange = self.__getRangeInPixel(plot)
return dataRange / pixelRange
def setFromPlot(self, plot):
pixelSize = self.__getPixelSize(plot)
dataCoordAtPixelCoordZero = numpy.array(plot.pixelToData(x=0, y=0))
isYaxisInverted = plot.getYAxis().isInverted()
isKeepAspectRatio = plot.isKeepDataAspectRatio()
interactionMode = plot.getInteractiveMode()["mode"]
if interactionMode not in set(['pan', 'zoom']):
interactionMode = 'pan'
plotConfig = isYaxisInverted, isKeepAspectRatio, interactionMode
value = dataCoordAtPixelCoordZero, pixelSize, plotConfig
self.setValue(value)
def __setViewLocation(self, plot, coord1, coord2):
xLimits = coord1[0], coord2[0]
yLimits = coord1[1], coord2[1]
if xLimits[0] > xLimits[1]:
xLimits = xLimits[1], xLimits[0]
if yLimits[0] > yLimits[1]:
yLimits = yLimits[1], yLimits[0]
xAxis = plot.getXAxis()
yAxis = plot.getYAxis()
xAxis.setLimits(*xLimits)
yAxis.setLimits(*yLimits)
def synchronizePlotConfig(self, plot):
value = self.value()
plotConfig = value[2]
isYaxisInverted, isKeepAspectRatio, interactionMode = plotConfig
plot.setKeepDataAspectRatio(isKeepAspectRatio)
plot.getYAxis().setInverted(isYaxisInverted)
plot.setInteractiveMode(interactionMode)
def synchronizePlotView(self, plot):
value = self.value()
dataCoordAtPixelCoordZero, pixelSize, plotConfig = value
isYaxisInverted = plotConfig[0]
if not isYaxisInverted:
# Coord of pixel and data are switched sometimes
pixelSize = numpy.array([pixelSize[0], -pixelSize[1]])
# Pixel coords
coord1, coord2 = self.__getMinMaxPixelCoord(plot)
# Data coords
coord1 = dataCoordAtPixelCoordZero + coord1 * pixelSize
coord2 = dataCoordAtPixelCoordZero + coord2 * pixelSize
self.__setViewLocation(plot, coord1, coord2)
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