# -*- coding: utf-8 -*-
"""
/***************************************************************************
ORStools
A QGIS plugin
QGIS client to query openrouteservice
-------------------
begin : 2017-02-01
git sha : $Format:%H$
copyright : (C) 2017 by Nils Nolde
email : nils.nolde@gmail.com
***************************************************************************/
This plugin provides access to the various APIs from OpenRouteService
(https://openrouteservice.org), developed and
maintained by GIScience team at University of Heidelberg, Germany. By using
this plugin you agree to the ORS terms of service
(https://openrouteservice.org/terms-of-service/).
/***************************************************************************
* *
* 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. *
* *
***************************************************************************/
"""
from PyQt5.QtCore import pyqtSignal
from PyQt5.QtGui import QColor
from qgis.core import (QgsWkbTypes)
from qgis.gui import (QgsMapToolEmitPoint,
QgsRubberBand)
from ORStools import DEFAULT_COLOR
class LineTool(QgsMapToolEmitPoint):
"""Line Map tool to capture mapped lines."""
def __init__(self, canvas):
"""
:param canvas: current map canvas
:type canvas: QgsMapCanvas
"""
self.canvas = canvas
QgsMapToolEmitPoint.__init__(self, self.canvas)
self.rubberBand = QgsRubberBand(self.canvas, False)
self.rubberBand.setStrokeColor(QColor(DEFAULT_COLOR))
self.rubberBand.setWidth(3)
self.crsSrc = self.canvas.mapSettings().destinationCrs()
self.previous_point = None
self.points = []
self.reset()
def reset(self):
"""reset rubberband and captured points."""
self.points = []
self.rubberBand.reset(QgsWkbTypes.LineGeometry)
pointDrawn = pyqtSignal(["QgsPointXY", "int"])
def canvasReleaseEvent(self, e):
"""Add marker to canvas and shows line."""
new_point = self.toMapCoordinates(e.pos())
self.points.append(new_point)
self.pointDrawn.emit(new_point, self.points.index(new_point))
self.showLine()
def showLine(self):
"""Builds rubberband from all points and adds it to the map canvas."""
self.rubberBand.reset(QgsWkbTypes.LineGeometry)
for point in self.points:
if point == self.points[-1]:
self.rubberBand.addPoint(point, True)
self.rubberBand.addPoint(point, False)
self.rubberBand.show()
doubleClicked = pyqtSignal()
def canvasDoubleClickEvent(self, e):
"""Ends line drawing and deletes rubberband and markers from map canvas."""
self.doubleClicked.emit()
self.canvas.scene().removeItem(self.rubberBand)
def deactivate(self):
super(LineTool, self).deactivate()
self.deactivated.emit()
# class PointTool(QgsMapToolEmitPoint):
# """Point Map tool to capture mapped coordinates."""
#
# def __init__(self, canvas, button):
# """
# :param canvas: current map canvas
# :type: QgsMapCanvas
#
# :param button: name of 'Map!' button pressed.
# :type button: str
# """
#
# QgsMapToolEmitPoint.__init__(self, canvas)
# self.canvas = canvas
# self.button = button
# self.cursor = QCursor(QPixmap(RESOURCE_PREFIX + 'icon_locate.png').scaledToWidth(48), 24, 24)
#
# canvasClicked = pyqtSignal(['QgsPointXY', 'QString'])
# def canvasReleaseEvent(self, event):
# #Get the click and emit a transformed point
#
# crsSrc = self.canvas.mapSettings().destinationCrs()
#
# point_oldcrs = event.mapPoint()
#
# xform = transform.transformToWGS(crsSrc)
# point_newcrs = xform.transform(point_oldcrs)
#
# QApplication.restoreOverrideCursor()
#
# self.canvasClicked.emit(point_newcrs, self.button)
#
# def activate(self):
# QApplication.setOverrideCursor(self.cursor)
