test_mapcanvas.py

# -*- coding: utf-8 -*-

"""
***************************************************************************
    
    ---------------------
    Date                 : 30.11.2017
    Copyright            : (C) 2017 by Benjamin Jakimow
    Email                : benjamin jakimow at geo dot hu-berlin dot de
***************************************************************************
*                                                                         *
*   This program is free software; you can redistribute it and/or modify  *
*   it under the terms of the GNU General Public License as published by  *
*   the Free Software Foundation; either version 2 of the License, or     *
*   (at your option) any later version.                                   *
*                                                                         *
***************************************************************************
"""
# noinspection PyPep8Naming

from timeseriesviewer.tests import initQgisApplication, testRasterFiles
from PyQt5.QtGui import *
from PyQt5.QtCore import *
import unittest, tempfile

from timeseriesviewer.mapcanvas import *
from timeseriesviewer.timeseries import *
resourceDir = os.path.join(DIR_REPO, 'qgisresources')
QGIS_APP = initQgisApplication(qgisResourceDir=resourceDir)
SHOW_GUI = False

class testclassDialogTest(unittest.TestCase):
    """Test rerources work."""

    def setUp(self):
        """Runs before each test."""
        pass

    def tearDown(self):
        """Runs after each test."""
        pass


    def test_basic_behaviour(self):

        files = TestObjects.testImagePaths()
        lyr1 = QgsRasterLayer(files[0])


        c = QgsMapCanvas()
        self.assertIsInstance(c, QgsMapCanvas)
        ext0 = c.extent()

        bExtent = 0
        def onExtentChanged():
            nonlocal bExtent
            bExtent += 1


        c.extentsChanged.connect(onExtentChanged)
        c.setExtent(lyr1.extent())

        self.assertTrue(bExtent == 1)
        c.freeze(True)
        c.setExtent(ext0)


    def test_mapcanvas(self):
        files = testRasterFiles()
        lyr1 = QgsRasterLayer(files[0])
        lyr2 = QgsRasterLayer(files[1])



        canvas = MapCanvas()

        self.assertIsInstance(canvas, QgsMapCanvas)
        self.assertFalse(canvas.isVisible())
        self.assertFalse(canvas.isVisibleToViewport())
        canvas.show()
        self.assertTrue(canvas.isVisible())
        self.assertTrue(canvas.isVisibleToViewport())

        #test the pipeline
        canvas.addToRefreshPipeLine([lyr1, lyr2])
        self.assertTrue(len(canvas.layers()) == 0)
        canvas.timedRefresh()
        self.assertTrue(len(canvas.layers()) == 2)

        canvas.addToRefreshPipeLine(MapCanvas.Command.HideRasters)
        canvas.timedRefresh()
        self.assertTrue(len(canvas.layers()) == 0)

        canvas.addToRefreshPipeLine(MapCanvas.Command.ShowRasters)
        canvas.timedRefresh()
        self.assertTrue(len(canvas.layers()) == 2)


        canvas.addToRefreshPipeLine(MapCanvas.Command.RemoveRasters)
        canvas.timedRefresh()
        self.assertTrue(len(canvas.layers()) == 0)





    def test_mapTools(self):

        m = MapCanvas()

        lastPos = None
        def onChanged(position:SpatialPoint):
            nonlocal lastPos
            lastPos = position
        m.sigCrosshairPositionChanged.connect(onChanged)

        center = SpatialPoint.fromMapCanvasCenter(m)
        import timeseriesviewer.maptools as mts
        m.setCrosshairVisibility(True)
        mt = mts.SpectralProfileMapTool(m)
        m.setMapTool(mt)
        self.assertTrue(m.crosshairPosition() == center)

        p2 = center.copy()
        p2.setX(p2.x()+100)
        m.setCrosshairPosition(p2)
        self.assertIsInstance(lastPos, SpatialPoint)
        self.assertTrue(lastPos == p2)


    def test_rendering_flags(self):
        #img = TestObjects.inMemoryImage(ns=10000,nl=10000, nb=3)
        #need a large image on file!
        from timeseriesviewer.main import TimeSeriesViewer
        from timeseriesviewer.mapvisualization import SpatialTemporalVisualization
        TSV = TimeSeriesViewer(None)
        self.assertIsInstance(TSV, TimeSeriesViewer)
        TSV.loadExampleTimeSeries()
        self.assertIsInstance(TSV.timeSeries(), TimeSeries)
        self.assertTrue(len(TSV.timeSeries()) > 0)
        TSV.show()
        QApplication.processEvents()

        stv = TSV.spatialTemporalVis
        self.assertIsInstance(stv, SpatialTemporalVisualization)

        maps = stv.mapCanvases()
        hidden = [m for m in maps if not m.isVisibleToViewport()]
        visible = [m for m in maps if m.isVisibleToViewport()]

        self.assertTrue(len(maps) == len(visible) + len(hidden))
        self.assertTrue(len(hidden) > 0)

        if SHOW_GUI:
            QGIS_APP.exec_()

    def test_mapCanvasLayerModel(self):

        M = MapCanvasLayerModel()
        self.assertIsInstance(M, MapCanvasLayerModel)
        files = TestObjects.testImagePaths()

        from timeseriesviewer.timeseries import TimeSeriesSource

        p0 = TimeSeriesSource.create(files[0]).qgsMimeDataUtilsUri()
        p1 = TimeSeriesSource.create(files[1]).qgsMimeDataUtilsUri()

        M.addMapLayerSources([p0])
        self.assertTrue(len(M) == 1)
        M.addMapLayerSources([p1])
        self.assertTrue(len(M) == 2)

        vl = M.visibleLayers()
        self.assertIsInstance(vl, list)
        self.assertTrue(len(vl) == 2)
        M.setLayerVisibility(0, False)
        self.assertTrue(len(M.visibleLayers()) == 1)
        M.setLayerVisibility(QgsRasterLayer, False)
        self.assertTrue(len(M.visibleLayers()) == 0)
        M.setLayerVisibility(QgsRasterLayer, True)
        self.assertTrue(len(M.visibleLayers()) == 2)

        M.clear()
        self.assertTrue(len(M) == 0)


        lyr1 = QgsRasterLayer(files[3])
        lyr2 = QgsRasterLayer(files[4])
        M.addMapLayerSources([lyr1, lyr2])

        from qgis.PyQt.QtWidgets import QTableView
        TV = QTableView()
        TV.setModel(M)

        if SHOW_GUI:
            TV.show()
            QGIS_APP.exec_()




if __name__ == "__main__":
    SHOW_GUI = False
    unittest.main()