# coding: utf-8
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"""Basic tests for Profile"""

__authors__ = ["T. Vincent", "P. Knobel"]
__license__ = "MIT"
__date__ = "17/01/2018"

import numpy
import unittest

from silx.utils.testutils import ParametricTestCase
from silx.gui.test.utils import (
    TestCaseQt, getQToolButtonFromAction)
from silx.gui import qt
from silx.gui.plot import PlotWindow, Plot1D, Plot2D, Profile
from silx.gui.plot.StackView import StackView


# Makes sure a QApplication exists
_qapp = qt.QApplication.instance() or qt.QApplication([])


class TestProfileToolBar(TestCaseQt, ParametricTestCase):
    """Tests for ProfileToolBar widget."""

    def setUp(self):
        super(TestProfileToolBar, self).setUp()
        profileWindow = PlotWindow()
        self.plot = PlotWindow()
        self.toolBar = Profile.ProfileToolBar(
            plot=self.plot, profileWindow=profileWindow)
        self.plot.addToolBar(self.toolBar)

        self.plot.show()
        self.qWaitForWindowExposed(self.plot)
        profileWindow.show()
        self.qWaitForWindowExposed(profileWindow)

        self.mouseMove(self.plot)  # Move to center
        self.qapp.processEvents()

    def tearDown(self):
        self.qapp.processEvents()
        self.plot.setAttribute(qt.Qt.WA_DeleteOnClose)
        self.plot.close()
        del self.plot
        del self.toolBar

        super(TestProfileToolBar, self).tearDown()

    def testAlignedProfile(self):
        """Test horizontal and vertical profile, without and with image"""
        # Use Plot backend widget to submit mouse events
        widget = self.plot.getWidgetHandle()

        # 2 positions to use for mouse events
        pos1 = widget.width() * 0.4, widget.height() * 0.4
        pos2 = widget.width() * 0.6, widget.height() * 0.6

        for action in (self.toolBar.hLineAction, self.toolBar.vLineAction):
            with self.subTest(mode=action.text()):
                # Trigger tool button for mode
                toolButton = getQToolButtonFromAction(action)
                self.assertIsNot(toolButton, None)
                self.mouseMove(toolButton)
                self.mouseClick(toolButton, qt.Qt.LeftButton)

                # Without image
                self.mouseMove(widget, pos=pos1)
                self.mouseClick(widget, qt.Qt.LeftButton, pos=pos1)

                # with image
                self.plot.addImage(numpy.arange(100 * 100).reshape(100, -1))
                self.mousePress(widget, qt.Qt.LeftButton, pos=pos1)
                self.mouseMove(widget, pos=pos2)
                self.mouseRelease(widget, qt.Qt.LeftButton, pos=pos2)

                self.mouseMove(widget)
                self.mouseClick(widget, qt.Qt.LeftButton)

    def testDiagonalProfile(self):
        """Test diagonal profile, without and with image"""
        # Use Plot backend widget to submit mouse events
        widget = self.plot.getWidgetHandle()

        # 2 positions to use for mouse events
        pos1 = widget.width() * 0.4, widget.height() * 0.4
        pos2 = widget.width() * 0.6, widget.height() * 0.6

        # Trigger tool button for diagonal profile mode
        toolButton = getQToolButtonFromAction(self.toolBar.lineAction)
        self.assertIsNot(toolButton, None)
        self.mouseMove(toolButton)
        self.mouseClick(toolButton, qt.Qt.LeftButton)

        for image in (False, True):
            with self.subTest(image=image):
                if image:
                    self.plot.addImage(numpy.arange(100 * 100).reshape(100, -1))

                self.mouseMove(widget, pos=pos1)
                self.mousePress(widget, qt.Qt.LeftButton, pos=pos1)
                self.mouseMove(widget, pos=pos2)
                self.mouseRelease(widget, qt.Qt.LeftButton, pos=pos2)

                self.plot.clear()


class TestGetProfilePlot(TestCaseQt):

    def testProfile1D(self):
        plot = Plot2D()
        plot.show()
        self.qWaitForWindowExposed(plot)
        plot.addImage([[0, 1], [2, 3]])
        self.assertIsInstance(plot.getProfileToolbar().getProfileMainWindow(),
                              qt.QMainWindow)
        self.assertIsInstance(plot.getProfilePlot(),
                              Plot1D)
        plot.setAttribute(qt.Qt.WA_DeleteOnClose)
        plot.close()
        del plot

    def testProfile2D(self):
        """Test that the profile plot associated to a stack view is either a
        Plot1D or a plot 2D instance."""
        plot = StackView()
        plot.show()
        self.qWaitForWindowExposed(plot)

        plot.setStack(numpy.array([[[0, 1], [2, 3]],
                                   [[4, 5], [6, 7]]]))

        self.assertIsInstance(plot.getProfileToolbar().getProfileMainWindow(),
                              qt.QMainWindow)

        # plot.getProfileToolbar().profile3dAction.computeProfileIn2D()  # default

        self.assertIsInstance(plot.getProfileToolbar().getProfilePlot(),
                              Plot2D)
        plot.getProfileToolbar().profile3dAction.computeProfileIn1D()
        self.assertIsInstance(plot.getProfileToolbar().getProfilePlot(),
                              Plot1D)

        plot.setAttribute(qt.Qt.WA_DeleteOnClose)
        plot.close()
        del plot


def suite():
    test_suite = unittest.TestSuite()
    # test_suite.addTest(positionInfoTestSuite)
    for testClass in (TestProfileToolBar, TestGetProfilePlot):
        test_suite.addTest(unittest.defaultTestLoader.loadTestsFromTestCase(
            testClass))
    return test_suite


if __name__ == '__main__':
    unittest.main(defaultTest='suite')