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# -*- coding: utf-8 -*-
"""
/***************************************************************************
HUB TimeSeriesViewer
-------------------
begin : 2015-08-20
git sha : $Format:%H$
copyright : (C) 2017 by HU-Berlin
email : benjamin.jakimow@geo.hu-berlin.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
import os, logging
logger = logging.getLogger(__name__)
from qgis.core import *
from qgis.gui import *
from PyQt4.QtCore import *
from PyQt4.QtGui import *
from timeseriesviewer import SETTINGS
from timeseriesviewer.utils import *
benjamin.jakimow@geo.hu-berlin.de
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class MapTools(object):
"""
Static class to support handling of nQgsMapTools.
"""
def __init__(self):
raise Exception('This class is not for any instantiation')
ZoomIn = 'ZOOM_IN'
ZoomOut = 'ZOOM_OUT'
ZoomFull = 'ZOOM_FULL'
Pan = 'PAN'
ZoomPixelScale = 'ZOOM_PIXEL_SCALE'
CursorLocation = 'CURSOR_LOCATION'
SpectralProfile = 'SPECTRAL_PROFILE'
TemporalProfile = 'TEMPORAL_PROFILE'
MoveToCenter = 'MOVE_CENTER'
@staticmethod
def copy(mapTool):
assert isinstance(mapTool, QgsMapTool)
s = ""
@staticmethod
def create(mapToolKey, canvas, *args, **kwds):
assert mapToolKey in MapTools.mapToolKeys()
assert isinstance(canvas, QgsMapCanvas)
if mapToolKey == MapTools.ZoomIn:
return QgsMapToolZoom(canvas, False)
if mapToolKey == MapTools.ZoomOut:
return QgsMapToolZoom(canvas, True)
if mapToolKey == MapTools.Pan:
return QgsMapToolPan(canvas)
if mapToolKey == MapTools.ZoomPixelScale:
return PixelScaleExtentMapTool(canvas)
if mapToolKey == MapTools.ZoomFull:
return FullExtentMapTool(canvas)
if mapToolKey == MapTools.CursorLocation:
return CursorLocationMapTool(canvas, *args, **kwds)
if mapToolKey == MapTools.MoveToCenter:
tool = CursorLocationMapTool(canvas, *args, **kwds)
tool.sigLocationRequest.connect(canvas.setCenter)
return tool
if mapToolKey == MapTools.SpectralProfile:
return SpectralProfileMapTool(canvas, *args, **kwds)
if mapToolKey == MapTools.TemporalProfile:
return TemporalProfileMapTool(canvas, *args, **kwds)
raise Exception('Unknown mapToolKey {}'.format(mapToolKey))
@staticmethod
def mapToolKeys():
return [MapTools.__dict__[k] for k in MapTools.__dict__.keys() if not k.startswith('_')]
class CursorLocationMapTool(QgsMapToolEmitPoint):
sigLocationRequest = pyqtSignal([SpatialPoint],[SpatialPoint, QgsMapCanvas])
def __init__(self, canvas, showCrosshair=True, purpose=None):
self.mShowCrosshair = showCrosshair
self.mCanvas = canvas
self.mPurpose = purpose
QgsMapToolEmitPoint.__init__(self, self.mCanvas)
self.mMarker = QgsVertexMarker(self.mCanvas)
self.mRubberband = QgsRubberBand(self.mCanvas, QGis.Polygon)
color = QColor('red')
self.mRubberband.setLineStyle(Qt.SolidLine)
self.mRubberband.setColor(color)
self.mRubberband.setWidth(2)
self.mMarker.setColor(color)
self.mMarker.setPenWidth(3)
self.mMarker.setIconSize(5)
self.mMarker.setIconType(QgsVertexMarker.ICON_CROSS) # or ICON_CROSS, ICON_X
def canvasPressEvent(self, e):
geoPoint = self.toMapCoordinates(e.pos())
self.mMarker.setCenter(geoPoint)
def setStyle(self, color=None, brushStyle=None, fillColor=None, lineStyle=None):
if color:
self.mRubberband.setColor(color)
if brushStyle:
self.mRubberband.setBrushStyle(brushStyle)
if fillColor:
self.mRubberband.setFillColor(fillColor)
if lineStyle:
self.mRubberband.setLineStyle(lineStyle)
def canvasReleaseEvent(self, e):
pixelPoint = e.pixelPoint()
crs = self.mCanvas.mapSettings().destinationCrs()
self.mMarker.hide()
geoPoint = self.toMapCoordinates(pixelPoint)
if self.mShowCrosshair:
#show a temporary crosshair
ext = SpatialExtent.fromMapCanvas(self.mCanvas)
cen = geoPoint
geom = QgsGeometry()
geom.addPart([QgsPoint(ext.upperLeftPt().x(),cen.y()), QgsPoint(ext.lowerRightPt().x(), cen.y())],
QGis.Line)
geom.addPart([QgsPoint(cen.x(), ext.upperLeftPt().y()), QgsPoint(cen.x(), ext.lowerRightPt().y())],
QGis.Line)
self.mRubberband.addGeometry(geom, None)
self.mRubberband.show()
#remove crosshair after 0.25 sec
QTimer.singleShot(250, self.hideRubberband)
pt = SpatialPoint(crs, geoPoint)
self.sigLocationRequest[SpatialPoint].emit(pt)
self.sigLocationRequest[SpatialPoint, QgsMapCanvas].emit(pt, self.canvas())
def hideRubberband(self):
self.mRubberband.reset()
class SpectralProfileMapTool(CursorLocationMapTool):
def __init__(self, *args, **kwds):
super(SpectralProfileMapTool, self).__init__(*args, **kwds)
class TemporalProfileMapTool(CursorLocationMapTool):
def __init__(self, *args, **kwds):
super(TemporalProfileMapTool, self).__init__(*args, **kwds)
class FullExtentMapTool(QgsMapTool):
def __init__(self, canvas):
super(FullExtentMapTool, self).__init__(canvas)
self.canvas = canvas
def canvasReleaseEvent(self, mouseEvent):
self.canvas.zoomToFullExtent()
def flags(self):
return QgsMapTool.Transient
class PixelScaleExtentMapTool(QgsMapTool):
def __init__(self, canvas):
super(PixelScaleExtentMapTool, self).__init__(canvas)
self.canvas = canvas
def flags(self):
return QgsMapTool.Transient
def canvasReleaseEvent(self, mouseEvent):
layers = self.canvas.layers()
unitsPxX = []
unitsPxY = []
for lyr in self.canvas.layers():
if isinstance(lyr, QgsRasterLayer):
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