class ShapeTool(QgsMapTool):
#signal emitted when the mouse is clicked. This indicates that the tool finished its job
toolFinished = pyqtSignal()
def __init__(self, canvas, geometryType, param, type, color = QColor( 254, 178, 76, 63 )):
"""
Constructor
"""
QgsMapTool.__init__(self, canvas)
self.canvas = canvas
self.active = False
self.geometryType = self.tr(geometryType)
self.param=param
self.type=type
self.cursor=None
self.rubberBand = QgsRubberBand(self.canvas, QgsWkbTypes.PolygonGeometry)
self.setColor(color)
self.reset()
self.rotAngle = 0
self.currentCentroid = None
self.rotate = False
def setColor(self, mFillColor):
"""
Adjusting the color to create the rubber band
"""
self.rubberBand.setColor(mFillColor)
self.rubberBand.setWidth(1)
def reset(self):
"""
Resetting the rubber band
"""
self.startPoint = self.endPoint = None
self.isEmittingPoint = False
try:
self.rubberBand.reset(QgsWkbTypes.PolygonGeometry)
except:
pass
def rotateRect(self, centroid, e):
"""
Calculates the angle for the rotation.
"""
item_position = self.canvas.mapToGlobal(e.pos())
c = self.toCanvasCoordinates(centroid)
c = self.canvas.mapToGlobal(c)
rotAngle = pi - atan2(
item_position.y() - c.y(), item_position.x() - c.x())
return rotAngle
def canvasPressEvent(self, e):
"""
When the canvas is pressed the tool finishes its job
"""
# enforce mouse restoring if clicked right after rotation
QApplication.restoreOverrideCursor()
self.canvas.unsetMapTool(self)
self.toolFinished.emit()
def _baseDistanceInMeters(self):
"""
Calculates the distance in meters of 2 points 1 unit map away on
current canvas CRS.
:return: (float) distance in meters between two points 1 map unit apart
from each other.
"""
source_crs = self.canvas.mapSettings().destinationCrs()
dest_crs = QgsCoordinateReferenceSystem(3857)
tr = QgsCoordinateTransform(
source_crs, dest_crs, QgsCoordinateTransformContext())
p1t = QgsGeometry().fromPointXY(QgsPointXY(1, 0))
p1t.transform(tr)
p2t = QgsGeometry().fromPointXY(QgsPointXY(0, 0))
p2t.transform(tr)
return QgsDistanceArea().measureLine(p1t.asPoint(), p2t.asPoint())
def getAdjustedSize(self, size):
"""
If map unit is not metric, the figure to be drawn needs to have its
size adjusted. This is necessary because input parameters are designed
to be meters on tool's GUI.
:param size: (float) tool's radius/length reference size in meters.
:return: (float)
"""
source_crs = self.canvas.mapSettings().destinationCrs()
if source_crs.mapUnits() != QgsUnitTypes.DistanceMeters:
return size / self._baseDistanceInMeters()
return size
def canvasMoveEvent(self, e):
"""
Deals with mouse move event to update the rubber band position in the canvas
"""
ctrlIsHeld = QApplication.keyboardModifiers() == Qt2.ControlModifier
if e.button() != None and not ctrlIsHeld:
if self.rotate:
# change rotate status
self.rotate = False
QApplication.restoreOverrideCursor()
self.endPoint = self.toMapCoordinates( e.pos() )
elif e.button() != None and ctrlIsHeld \
and self.geometryType == self.tr(u"Square"):
# calculate angle between mouse and last rubberband centroid before holding control
self.rotAngle = self.rotateRect(self.currentCentroid, e)
if not self.rotate:
# only override mouse if it is not overriden already
QApplication.setOverrideCursor(QCursor(Qt2.BlankCursor))
self.rotate = True
if self.geometryType == self.tr(u"Circle"):
self.showCircle(self.endPoint)
elif self.geometryType == self.tr(u"Square"):
self.showRect(self.endPoint, sqrt(self.param)/2, self.rotAngle)
def showCircle(self, startPoint):
"""
Draws a circle in the canvas
"""
nPoints = 50
x = startPoint.x()
y = startPoint.y()
if self.type == self.tr('distance'):
r = self.getAdjustedSize(self.param)
self.rubberBand.reset(QgsWkbTypes.PolygonGeometry)
for itheta in range(nPoints+1):
theta = itheta*(2.0*pi/nPoints)
self.rubberBand.addPoint(QgsPointXY(x+r*cos(theta), y+r*sin(theta)))
self.rubberBand.show()
else:
r = self.getAdjustedSize(sqrt(self.param/pi))
self.rubberBand.reset(QgsWkbTypes.PolygonGeometry)
for itheta in range(nPoints+1):
theta = itheta*(2.0*pi/nPoints)
self.rubberBand.addPoint(QgsPointXY(x+r*cos(theta), y+r*sin(theta)))
self.rubberBand.show()
def showRect(self, startPoint, param, rotAngle=0):
"""
Draws a rectangle in the canvas
"""
self.rubberBand.reset(QgsWkbTypes.PolygonGeometry)
x = startPoint.x() # center point x
y = startPoint.y() # center point y
# rotation angle is always applied in reference to center point
# to avoid unnecessary calculations
c = cos(rotAngle)
s = sin(rotAngle)
# translating coordinate system to rubberband centroid
param = self.getAdjustedSize(param)
for posx, posy in ((-1, -1), (-1, 1), (1, 1), (1, -1)):
px = posx * param
py = posy * param
pnt = QgsPointXY(px * c - py * s + x, py * c + px * s + y)
self.rubberBand.addPoint(pnt, False)
self.rubberBand.setVisible(True)
self.rubberBand.updateRect()
self.rubberBand.update()
self.rubberBand.show()
self.currentCentroid = startPoint
def deactivate(self):
"""
Deactivates the tool and hides the rubber band
"""
self.rubberBand.hide()
QgsMapTool.deactivate(self)
# restore mouse in case tool is disabled right after rotation
QApplication.restoreOverrideCursor()
def activate(self):
"""
Activates the tool
"""
QgsMapTool.activate(self)
class MoveFeatureTool(QgsMapTool):
def __init__(self, mission_track, canvas):
QgsMapTool.__init__(self, canvas)
self.band = None
self.feature = None
self.startcoord = None
self.mission_track = mission_track
self.layer = mission_track.get_mission_layer()
self.clicked_outside_layer = False
self.mCtrl = False
self.rot_center = None
self.rot_center_rb = None
self.ini_rot_point = None
self.last_rot_angle = 0.0
self.curr_angle = 0.0
self.distance = QgsDistanceArea()
self.distance.setSourceCrs(QgsCoordinateReferenceSystem(4326), QgsProject.instance().transformContext())
self.distance.setEllipsoid('WGS84')
self.ini_geom = next(self.layer.dataProvider().getFeatures()).geometry()
logger.info(mission_track.get_mission_name())
def canvasMoveEvent(self, event):
"""
Override of QgsMapTool mouse move event
"""
if self.band and not self.mCtrl:
point = self.toMapCoordinates(event.pos())
offset_x = point.x() - self.startcoord.x()
offset_y = point.y() - self.startcoord.y()
self.band.setTranslationOffset(offset_x, offset_y)
self.band.updatePosition()
self.band.update()
if self.band and self.mCtrl:
end_rot_point = self.toMapCoordinates(event.pos())
self.curr_angle = self.distance.bearing(self.rot_center, end_rot_point) \
- self.distance.bearing(self.rot_center, self.ini_rot_point)\
+ self.last_rot_angle
self.rotate_and_project_band(self.curr_angle)
def canvasPressEvent(self, event):
"""
Override of QgsMapTool mouse press event
"""
if event.button() == Qt.LeftButton and not self.mCtrl:
if self.band:
self.band.hide()
self.band = None
self.feature = None
logger.info("layer feature count {}".format(self.layer.featureCount()))
if not self.layer:
return
logger.info("Trying to find feature in layer")
point = self.toLayerCoordinates(self.layer, event.pos())
search_radius = (QgsTolerance.toleranceInMapUnits(10, self.layer,
self.canvas().mapSettings(), QgsTolerance.Pixels))
rect = QgsRectangle()
rect.setXMinimum(point.x() - search_radius)
rect.setXMaximum(point.x() + search_radius)
rect.setYMinimum(point.y() - search_radius)
rect.setYMaximum(point.y() + search_radius)
rq = QgsFeatureRequest().setFilterRect(rect)
f = QgsFeature()
self.layer.getFeatures(rq).nextFeature(f)
if f.geometry():
self.band = self.create_rubber_band()
self.band.setToGeometry(f.geometry(), self.layer)
self.band.show()
self.startcoord = self.toMapCoordinates(event.pos())
self.feature = f
self.clicked_outside_layer = False
return
else:
self.clicked_outside_layer = True
def canvasReleaseEvent(self, event):
"""
Override of QgsMapTool mouse release event
"""
if event.button() == Qt.LeftButton and not self.mCtrl:
if not self.band:
if self.clicked_outside_layer and len(self.mission_track.find_waypoints_in_mission()) > 0:
confirmation_msg = "Do you want to move the mission ? \n\n" \
"First waypoint will set on the marked point."
reply = QMessageBox.question(self.parent(), 'Movement Confirmation',
confirmation_msg, QMessageBox.Yes, QMessageBox.No)
if reply == QMessageBox.Yes:
feats = self.layer.getFeatures()
for f in feats: # will be only one
if self.layer.geometryType() == QgsWkbTypes.LineGeometry:
list_wp = f.geometry().asPolyline()
self.startcoord = self.toLayerCoordinates(self.layer, list_wp[0])
elif self.layer.geometryType() == QgsWkbTypes.PointGeometry:
wp = f.geometry().asPoint()
self.startcoord = self.toLayerCoordinates(self.layer, wp)
self.feature = f
self.move_position(event.pos())
return
if not self.layer:
return
if not self.feature:
return
self.move_position(event.pos())
def keyPressEvent(self, event):
if event.key() == Qt.Key_Control and self.band is None \
and len(self.mission_track.find_waypoints_in_mission()) > 1:
self.mCtrl = True
self.show_rotation_center()
self.show_rubber_band()
self.rotate_and_project_band(self.last_rot_angle)
self.ini_rot_point = self.toMapCoordinates(self.canvas().mouseLastXY())
def keyReleaseEvent(self, event):
if event.key() == Qt.Key_Control and self.mCtrl:
self.mCtrl = False
self.rotate_and_project_mission()
self.hide_rotation_center()
self.hide_rubber_band()
self.last_rot_angle = self.curr_angle
def move_position(self, pos):
start_point = self.toLayerCoordinates(self.layer, self.startcoord)
end_point = self.toLayerCoordinates(self.layer, pos)
# Find vertical distance to be translated
a = self.distance.bearing(start_point, end_point)
d = self.distance.measureLine(start_point, end_point)
vertical_dist = abs(cos(a) * d)
# If translating a point or if translation is small,
# do a simple translation (very small error, proportional to vertical dist)
if vertical_dist < 9000 or self.layer.geometryType() == QgsWkbTypes.PointGeometry:
dx = end_point.x() - start_point.x()
dy = end_point.y() - start_point.y()
self.layer.startEditing()
self.layer.translateFeature(self.feature.id(), dx, dy)
self.layer.commitChanges()
# If translation is big, translate and project (small and constant error due to approximations in calculations)
else:
ini_coords = next(self.layer.dataProvider().getFeatures()).geometry().asPolyline()
end_coords = []
if len(ini_coords) > 1:
dx = end_point.x() - start_point.x()
dy = end_point.y() - start_point.y()
end_c = QgsPointXY(ini_coords[0].x() + dx, ini_coords[0].y() + dy)
end_coords.append(end_c)
for i in range(1, len(ini_coords)):
dist = self.distance.measureLine(ini_coords[i-1], ini_coords[i])
angle = self.distance.bearing(ini_coords[i-1], ini_coords[i])
end_c = endpoint(end_coords[i-1], dist, degrees(angle))
end_coords.append(end_c)
feature = next(self.layer.dataProvider().getFeatures())
self.layer.startEditing()
self.layer.changeGeometry(feature.id(), QgsGeometry.fromPolylineXY(end_coords))
self.layer.commitChanges()
if self.band is not None:
self.band.hide()
self.band = None
# get new waypoints and put them into mission structure
feats = self.layer.getFeatures()
for f in feats: # will be only one
if self.layer.geometryType() == QgsWkbTypes.LineGeometry:
list_wp = f.geometry().asPolyline()
for wp in range(0, len(list_wp)):
point = list_wp[wp]
self.mission_track.change_position(wp, point)
elif self.layer.geometryType() == QgsWkbTypes.PointGeometry:
wp = f.geometry().asPoint()
self.mission_track.change_position(0, wp)
# rotation center and geometry have changed, set rot_center to none to recalculate when needed
self.rot_center = None
self.last_rot_angle = 0.0
self.ini_geom = next(self.layer.dataProvider().getFeatures()).geometry()
def deactivate(self):
"""
Deactive the tool.
"""
self.hide_rotation_center()
self.hide_rubber_band()
def create_rubber_band(self):
"""
Creates a new rubber band.
"""
band = QgsRubberBand(self.canvas())
band.setColor(QColor("green"))
band.setWidth(2)
band.setLineStyle(Qt.DashLine)
return band
def show_rotation_center(self):
"""
Shows rotation center of the mission with a point rubber band
"""
if len(self.mission_track.find_waypoints_in_mission()) > 1:
feature = next(self.layer.dataProvider().getFeatures())
list_wp = feature.geometry().asPolyline()
if self.rot_center is None or self.rot_center_rb is None:
self.rot_center = self.find_geometric_center(list_wp)
self.rot_center_rb = QgsRubberBand(self.canvas())
self.rot_center_rb.setColor(QColor("black"))
self.rot_center_rb.setWidth(3)
self.rot_center_rb.setToGeometry(QgsGeometry.fromPointXY(self.rot_center), None)
self.rot_center_rb.update()
else:
self.rot_center_rb.show()
def hide_rotation_center(self):
"""
Hides the rotation center of the mission and deletes the point rubber band
"""
if self.rot_center_rb:
self.rot_center_rb.hide()
# self.rot_center_rb = None
def find_geometric_center(self, list_wp):
"""
Finds geometric center from a list of waypoints
:param list_wp: list of waypoints
:return: geometric center of the list of waypoints
"""
center = QgsPointXY()
max_x = None
min_x = None
max_y = None
min_y = None
# Geometric center
for i in range(0, len(list_wp)):
point = list_wp[i]
if max_x is None or point.x() > max_x:
max_x = point.x()
if min_x is None or point.x() < min_x:
min_x = point.x()
if max_y is None or point.y() > max_y:
max_y = point.y()
if min_y is None or point.y() < min_y:
min_y = point.y()
center.setX((max_x + min_x)/2)
center.setY((max_y + min_y)/2)
return center
def show_rubber_band(self):
"""
Creates and shows a rubber band with the geometry of the mission
"""
if len(self.mission_track.find_waypoints_in_mission()) > 1:
self.band = self.create_rubber_band()
self.band.setToGeometry(self.ini_geom, self.layer)
def hide_rubber_band(self):
"""
Hides and deletes the rubber band of the geometry of the mission
"""
if self.band:
self.band.hide()
self.band = None
def rotate_and_project_band(self, rot_angle=0.0):
"""
Rebuilds the initial geometry of the mission rotated with the angle defined by rot_angle and it gets stored in
the geometry of self.band
:param rot_angle: Angle used to rotate the geometry
"""
ini_coords = self.ini_geom.asPolyline()
end_coords = []
if len(ini_coords) > 1:
dist = self.distance.measureLine(self.rot_center, ini_coords[0])
angle = self.distance.bearing(self.rot_center, ini_coords[0]) + rot_angle
end_first_wp = endpoint(self.rot_center, dist, degrees(angle))
end_coords.append(end_first_wp)
for i in range(1, len(ini_coords)):
dist = self.distance.measureLine(ini_coords[i-1], ini_coords[i])
angle = self.distance.bearing(ini_coords[i-1], ini_coords[i]) + rot_angle
end_c = endpoint(end_coords[i-1], dist, degrees(angle))
end_coords.append(end_c)
end_band_geom = QgsGeometry().fromPolylineXY(end_coords)
self.band.setToGeometry(end_band_geom, self.layer)
def rotate_and_project_mission(self):
"""
Copy the changes from the rotated and projected rubber band to the geometry of the mission
"""
list_wp = self.band.asGeometry().asPolyline()
if len(list_wp) > 1:
for i in range(0, len(list_wp)):
point = list_wp[i]
self.mission_track.change_position(i, point)
feature = next(self.layer.dataProvider().getFeatures())
self.layer.startEditing()
self.layer.changeGeometry(feature.id(), self.band.asGeometry())
self.layer.commitChanges()
class MoveLandmarkTool(QgsMapTool):
def __init__(self, canvas):
super().__init__(canvas)
self.lm_layer = None
self.lm_point = None
self.clicked_on_landmark = False
self.band = None
def set_landmark_layer(self, layer):
"""Sets current land mark layer"""
self.lm_layer = layer
def canvasPressEvent(self, event):
"""
If pressEvent point is near the layer point, enable dragging. Else show msg box
"""
if event.button() == Qt.LeftButton:
click_point = self.toLayerCoordinates(self.lm_layer, event.pos())
if self.lm_layer.featureCount() == 1:
feature_list = self.lm_layer.dataProvider().getFeatures(
) #Returns iterator to a list of one feature
self.lm_feature = next(
feature_list) #get first and only element in the list
self.lm_point = self.lm_feature.geometry().asPoint()
dist = QgsPointXY.distance(click_point, self.lm_point)
tolerance = (QgsTolerance.toleranceInMapUnits(
15, self.lm_layer,
self.canvas().mapSettings(), QgsTolerance.Pixels))
if dist < tolerance:
#Clicked on a landmark
self.clicked_on_landmark = True
self.create_ghost_point()
else:
#Not clicked on a landmark
confirmation_msg = "Do you want to move {} here? \n\n".format(
self.lm_layer.name())
reply = QMessageBox.question(self.parent(),
'Movement Confirmation',
confirmation_msg,
QMessageBox.Yes,
QMessageBox.No)
if reply == QMessageBox.Yes:
self.move_position(click_point)
def canvasReleaseEvent(self, event):
"""
If dragging, stop and move landmark position to the release event point
Also destroy rubberband (ghost point)
"""
if (event.button() == Qt.LeftButton and self.lm_layer
and self.clicked_on_landmark):
release_point = self.toLayerCoordinates(self.lm_layer, event.pos())
self.move_position(release_point)
self.clicked_on_landmark = False
if self.band:
self.band.hide()
self.band = None
def move_position(self, end_point):
"""
Translates landmark layer to end_point
:param end_point: Where to move the landmark point
"""
# If layer is not stored in memory, change its datasource to memory
if self.lm_layer.source()[0] == "/":
temp_feature = next(self.lm_layer.dataProvider().getFeatures()
) # iterator with only 1 feature in list
options = QgsDataProvider.ProviderOptions()
self.lm_layer.setDataSource("Point?crs=epsg:4326",
self.lm_layer.name(), "memory",
options)
self.lm_layer.dataProvider().addFeatures([temp_feature])
self.lm_feature = next(self.lm_layer.dataProvider().getFeatures())
dx = end_point.x() - self.lm_point.x()
dy = end_point.y() - self.lm_point.y()
self.lm_layer.startEditing()
self.lm_layer.translateFeature(self.lm_feature.id(), dx, dy)
self.lm_layer.commitChanges()
def create_ghost_point(self):
"""
Creates rubber band as a ghost image of the landmark point
"""
if self.band is not None:
self.band.hide()
self.band = None
self.band = QgsRubberBand(self.canvas())
self.band.setColor(QColor("green"))
self.band.setToGeometry(self.lm_feature.geometry(), self.lm_layer)
self.band.show()
def canvasMoveEvent(self, event):
"""
If dragging, move ghost point
"""
if self.clicked_on_landmark:
point = self.toLayerCoordinates(self.lm_layer, event.pos())
self.move_ghost_point(point)
def move_ghost_point(self, point):
"""
Translates ghost point to point
:param point: where the rubber band is going to be translated
"""
if self.band:
offset_x = point.x() - self.lm_point.x()
offset_y = point.y() - self.lm_point.y()
self.band.setTranslationOffset(offset_x, offset_y)
self.band.updatePosition()
self.band.update()
class EarthMineQGIS(QObject):
"""QGIS Plugin Implementation."""
def __init__(self, iface):
"""Constructor.
:param iface: An interface instance that will be passed to this class
which provides the hook by which you can manipulate the QGIS
application at run time.
:type iface: QgsInterface
"""
# Save reference to the QGIS interface
super(EarthMineQGIS, self).__init__()
self.movingfeature = None
self.iface = iface
self.viewer = None
self.canvas = self.iface.mapCanvas()
self.settings = QSettings()
# initialize plugin directory
self.plugin_dir = os.path.dirname(__file__)
# initialize locale
locale = QSettings().value("locale/userLocale")[0:2]
locale_path = os.path.join(self.plugin_dir, "i18n", "EarthMineQGIS_{}.qm".format(locale))
if os.path.exists(locale_path):
self.translator = QTranslator()
self.translator.load(locale_path)
if qVersion() > "4.3.3":
QCoreApplication.installTranslator(self.translator)
self.pointtool = QgsMapToolEmitPoint(self.canvas)
self.pointtool.canvasClicked.connect(self.set_viewer_location)
self.settingsdialog = SettingsDialog(self.iface.mainWindow())
self.actions = []
self.menu = self.tr(u"&Earthmine")
self.toolbar = self.iface.addToolBar(u"EarthMineQGIS")
self.toolbar.setObjectName(u"EarthMineQGIS")
self.legend = self.iface.legendInterface()
emcolor = QColor(1, 150, 51)
self.tempband = QgsRubberBand(self.canvas, QGis.Line)
self.tempband.setWidth(5)
self.tempband.setColor(emcolor)
self.tempbandpoints = QgsRubberBand(self.canvas, QGis.Point)
self.tempbandpoints.setWidth(7)
self.tempbandpoints.setColor(emcolor)
self.movingband = QgsRubberBand(self.canvas, QGis.Point)
self.movingband.setWidth(5)
self.movingband.setColor(emcolor)
self.layersignals = []
self.marker = None
def initGui(self):
"""Create the menu entries and toolbar icons inside the QGIS GUI."""
icon_path = ":/icons/settings"
self.add_action(
icon_path, text=self.tr(u"Show Settings"), callback=self.show_settings, parent=self.iface.mainWindow()
)
icon_path = ":/icons/viewer"
self.add_action(
icon_path, text=self.tr(u"Earthmine Viewer"), callback=self.open_viewer, parent=self.iface.mainWindow()
)
self.marker = PostionMarker(self.canvas)
self.marker.hide()
self.viewer = Viewer(callbackobject=self)
self.viewer.trackingChanged.connect(self.marker.setTracking)
self.viewer.setLocationTriggered.connect(partial(self.canvas.setMapTool, self.pointtool))
self.viewer.updateFeatures.connect(self.update_earthmine_features)
self.viewer.layerChanged.connect(self.iface.setActiveLayer)
self.viewer.clearLine.connect(self.clear_bands)
self.viewer.closed.connect(self.remove_items)
self.iface.currentLayerChanged.connect(self.viewer.update_current_layer)
cursor = QCursor(QPixmap(":/icons/location"))
self.pointtool.setCursor(cursor)
self.pointtool.setAction(self.viewer.setlocationaction)
def remove_items(self):
self.marker.setTracking(False)
self.disconnect_projectsignals()
self.iface.actionPan().trigger()
def unload(self):
"""Removes the plugin menu item and icon from QGIS GUI."""
self.canvas.scene().removeItem(self.marker)
del self.marker
self.disconnect_projectsignals()
for action in self.actions:
self.iface.removePluginMenu(self.tr(u"&Earthmine"), action)
self.iface.removeToolBarIcon(action)
del self.toolbar
self.iface.removeDockWidget(self.viewer)
self.viewer.deleteLater()
def disconnect_projectsignals(self):
safe_disconnect(QgsMapLayerRegistry.instance().layerWasAdded, self.connect_layer_signals)
safe_disconnect(QgsMapLayerRegistry.instance().layersRemoved, self.layers_removed)
safe_disconnect(self.canvas.layersChanged, self.layers_changed)
safe_disconnect(self.iface.projectRead, self.connect_signals)
safe_disconnect(self.canvas.selectionChanged, self.selection_changed)
safe_disconnect(self.canvas.selectionChanged, self.viewer.selection_changed)
def clear_bands(self):
self.tempband.reset(QGis.Line)
self.tempbandpoints.reset(QGis.Point)
def visible_layers(self):
"""
Return the visible layers shown in the map canvas
:return:
"""
return (layer for layer, visible in self.layers_with_states() if visible)
def layers_with_states(self):
for layer in maplayers():
if not layer.type() == QgsMapLayer.VectorLayer:
continue
if not layer.geometryType() in [QGis.Point, QGis.Line]:
continue
yield layer, self.legend.isLayerVisible(layer)
def _layer_feature_added(self, featureid):
layer = self.sender()
if not layer:
return
self.layer_feature_added(layer, featureid)
def layer_feature_added(self, layer, featureid):
if not self.viewer:
return
feature = layer.getFeatures(QgsFeatureRequest(featureid)).next()
renderer = layer.rendererV2()
transform = self.coordinatetransform(layer)
featuredata = to_feature_data(layer.id(), feature, renderer, transform)
geomtype = layer.geometryType()
layerdata = dict(id=layer.id(), geomtype=QGis.vectorGeometryType(geomtype))
self.viewer.load_features(layerdata, featuredata)
def _layer_feature_delete(self, featureid):
layer = self.sender()
if not layer:
return
self.layer_feature_delete(layer, featureid)
def layer_feature_delete(self, layer, featureid):
if not self.viewer:
return
self.viewer.remove_feature(layer.id(), featureid)
def _layer_geometry_changed(self, featureid, geometry):
layer = self.sender()
if not layer:
return
self.layer_geometry_changed(layer, featureid, geometry)
def layer_geometry_changed(self, layer, featureid, geometry):
if not self.viewer:
return
geomtype = layer.geometryType()
if geomtype == QGis.Point:
geom = geometry.asPoint()
transform = self.coordinatetransform(layer)
point = transform.transform(geom, QgsCoordinateTransform.ReverseTransform)
location = dict(lat=point.y(), lng=point.x())
self.viewer.edit_feature(layer.id(), featureid, [location])
elif geomtype == QGis.Line:
self.layer_feature_delete(layer, featureid)
self.layer_feature_added(layer, featureid)
def connect_layer_signals(self, layer):
if not layer.type() == QgsMapLayer.VectorLayer:
return
layer.featureAdded.connect(self._layer_feature_added)
layer.featureDeleted.connect(self._layer_feature_delete)
layer.editingStarted.connect(self.layer_editstate_changed)
layer.editingStopped.connect(self.layer_editstate_changed)
# HACK The new style doesn't work here
# http://hub.qgis.org/issues/6573
signal = SIGNAL("geometryChanged(QgsFeatureId, QgsGeometry&)")
self.connect(layer, signal, self._layer_geometry_changed)
self.load_layer_features(layers=[layer])
def layer_editstate_changed(self):
layer = self.sender()
if layer == self.iface.activeLayer():
self.viewer.layer_changed(layer)
def disconnect_signals(self):
self.disconnect_projectsignals()
for layer in maplayers():
if not layer.type() == QgsMapLayer.VectorLayer:
return
safe_disconnect(layer.featureAdded, self._layer_feature_added)
safe_disconnect(layer.featureDeleted, self._layer_feature_delete)
safe_disconnect(layer.editingStarted, self.layer_editstate_changed)
safe_disconnect(layer.editingStopped, self.layer_editstate_changed)
# HACK The new style doesn't work here
# http://hub.qgis.org/issues/6573
signal = SIGNAL("geometryChanged(QgsFeatureId, QgsGeometry&)")
self.disconnect(layer, signal, self._layer_geometry_changed)
def connect_signals(self):
for layer in maplayers():
self.connect_layer_signals(layer)
self.center_on_canvas()
def set_viewer_location(self, point, mousebutton):
transform = self.coordinatetransform()
point = transform.transform(point, QgsCoordinateTransform.ReverseTransform)
self.viewer.set_location(point)
def distancearea(self):
area = QgsDistanceArea()
dest = self.canvas.mapRenderer().destinationCrs()
area.setSourceCrs(dest)
return area, dest.mapUnits()
def coordinatetransform(self, layer=None):
"""
Return the transform for WGS84 -> QGIS projection.
"""
source = QgsCoordinateReferenceSystem()
source.createFromWkt(
'GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137.0,298.257223563]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]]'
)
if not layer:
dest = self.canvas.mapRenderer().destinationCrs()
else:
dest = layer.crs()
transform = QgsCoordinateTransform(source, dest)
return transform
def earthmine_settings(self):
settings = {}
with settinggroup(self.settings, "plugins/Earthmine"):
for key in ["serviceUrl", "baseDataUrl", "apiKey", "secretKey", "viewerUrl"]:
if not self.settings.contains(key):
raise EarthmineSettingsError("{} not set".format(key))
value = self.settings.value(key, type=str)
if value is None:
raise EarthmineSettingsError("{} not set".format(key))
settings[key] = value
return settings
@pyqtSlot()
def ready(self):
"""
Called when the viewer is ready to be started. At this point the viewer hasn't been loaded
so no other methods apart from startViewer will be handled.
"""
settings = self.earthmine_settings()
self.viewer.startViewer(settings)
@pyqtSlot()
def viewerReady(self):
"""
Called once the viewer is loaded and ready to get location events.
"""
self.disconnect_signals()
self.connect_signals()
self.iface.projectRead.connect(self.connect_signals)
self.canvas.layersChanged.connect(self.layers_changed)
self.canvas.selectionChanged.connect(self.selection_changed)
self.canvas.selectionChanged.connect(self.viewer.selection_changed)
QgsMapLayerRegistry.instance().layersRemoved.connect(self.layers_removed)
QgsMapLayerRegistry.instance().layerWasAdded.connect(self.connect_layer_signals)
self.center_on_canvas()
self.viewer.activelayercombo.setLayer(self.iface.activeLayer())
def center_on_canvas(self):
point = self.canvas.extent().center()
transform = self.coordinatetransform()
point = transform.transform(point, QgsCoordinateTransform.ReverseTransform)
self.viewer.set_location(point)
self.viewer.infoaction.toggle()
def selection_changed(self, layer):
ids = [feature.id() for feature in layer.selectedFeatures()]
if not ids:
self.viewer.clear_selection(layer.id())
else:
self.viewer.set_selection(layer.id(), ids)
def layers_changed(self):
layerstates = self.layers_with_states()
for layer, visible in layerstates:
layerid = layer.id()
viewerloaded = self.viewer.layer_loaded(layerid)
QgsMessageLog.instance().logMessage(layerid, "Earthmine")
QgsMessageLog.instance().logMessage("Viewer State:" + str(viewerloaded), "Earthmine")
QgsMessageLog.instance().logMessage("QGIS State:" + str(visible), "Earthmine")
if (viewerloaded and visible) or (not viewerloaded and not visible):
QgsMessageLog.instance().logMessage("Ignoring as states match", "Earthmine")
continue
if viewerloaded and not visible:
QgsMessageLog.instance().logMessage(
"Clearing layer because viewer loaded and disabled in QGIS", "Earthmine"
)
self.viewer.clear_layer_features(layerid)
continue
if not viewerloaded and visible:
QgsMessageLog.instance().logMessage("Loading layer", "Earthmine")
self.load_layer_features(layers=[layer])
continue
def layers_removed(self, layers):
for layerid in layers:
self.viewer.clear_layer_features(layerid)
@pyqtSlot(str, float, float)
def viewChanged(self, event, yaw, angle):
self.marker.setAngle(angle)
self.marker.setYaw(yaw)
@pyqtSlot(str, str)
def getInfo(self, layerid, featureid):
featureid = int(featureid)
activelayer = self.iface.activeLayer()
if not activelayer:
return
activetool = self.viewer.active_tool()
if not activetool in ["Info", "Select"]:
return
# Only show information for the active layer
if not layerid == activelayer.id():
return
layer = layer_by_id(layerid)
if activetool == "Select":
layer.setSelectedFeatures([featureid])
elif activetool == "Info":
rq = QgsFeatureRequest(featureid)
feature = layer.getFeatures(rq).next()
dlg = get_feature_form(layer, feature)
if dlg.dialog().exec_():
self.canvas.refresh()
@pyqtSlot(str, str, float, float, bool)
def featureMoved(self, layerid, featureid, lat, lng, end):
layer = layer_by_id(layerid)
transform = self.coordinatetransform(layer)
point = transform.transform(lng, lat)
if not end:
self.movingband.show()
self.movingband.setToGeometry(QgsGeometry.fromPoint(point), layer)
self.movingband.updatePosition()
self.movingband.update()
else:
self.movingband.hide()
feature = feature_by_id(layer, featureid)
startpoint = feature.geometry().asPoint()
dx = point.x() - startpoint.x()
dy = point.y() - startpoint.y()
layer.beginEditCommand("Feature Moved")
# Block signals for this move as the geometry changed signal will re add the geometry on use.
layer.blockSignals(True)
layer.translateFeature(feature.id(), dx, dy)
layer.blockSignals(False)
self.canvas.refresh()
layer.endEditCommand()
@pyqtSlot(str, str)
def onError(self, message, stacktrace=None):
self.iface.messageBar().pushMessage("Earthmine", message, QgsMessageBar.WARNING)
QgsMessageLog.logMessage(stacktrace, "Earthmine")
@pyqtSlot(float, float, float)
def addPoint(self, lat, lng, z):
layer = self.viewer.active_layer
if not layer.isEditable():
self.iface.messageBar().pushMessage(
"Earthmine",
"Selected layer isn't editable. Please enable edit mode to add features",
duration=3,
level=QgsMessageBar.WARNING,
)
return
transform = self.coordinatetransform(layer)
point = transform.transform(lng, lat)
geom = QgsGeometry.fromPoint(point)
self.add_feature(layer, geom, z)
def add_feature(self, layer, geom, z=None):
feature = QgsFeature(layer.pendingFields())
if z and self.viewer.copyZvalue:
try:
feature["Z"] = z
except KeyError:
QgsMessageLog.log("No Z found on layer {}".format(layer.name()))
pass
feature.setGeometry(geom)
dlg = get_feature_form(layer, feature, isadd=True)
if dlg.dialog().exec_():
self.canvas.refresh()
@pyqtSlot(str, bool, str)
def drawLine(self, points, end, stats):
points = json.loads(points)
stats = json.loads(stats)
QgsMessageLog.logMessage(str(stats), "Earthmine")
self.tempband.reset(QGis.Line)
self.tempbandpoints.reset(QGis.Point)
color = QColor(self.viewer.current_action_color)
self.tempband.setColor(color)
self.tempbandpoints.setColor(color)
layer = self.viewer.active_layer
transform = self.coordinatetransform(layer)
earthminepoints = []
for point in points:
newpoint = transform.transform(point["lng"], point["lat"])
self.tempband.addPoint(newpoint)
self.tempbandpoints.addPoint(newpoint)
empoint = EarthminePoint(newpoint, point)
earthminepoints.append(empoint)
if end and not self.viewer.mode == "Vertical":
geom = self.tempband.asGeometry()
self.add_feature(layer, geom)
self.clear_bands()
self.viewer.geom = EarthmineLine(earthminepoints, stats)
self.tempband.show()
self.tempbandpoints.show()
@pyqtSlot(str, str, str, float)
def locationChanged(self, lat, lng, yaw, angle):
transform = self.coordinatetransform()
point = transform.transform(float(lng), float(lat))
self.marker.setCenter(point)
yaw = float(yaw)
self.marker.setAngle(angle)
self.marker.setYaw(yaw)
self.marker.setTracking(self.viewer.tracking)
if self.marker.tracking:
rect = QgsRectangle(point, point)
extentlimt = QgsRectangle(self.canvas.extent())
extentlimt.scale(0.95)
if not extentlimt.contains(point):
self.canvas.setExtent(rect)
self.canvas.refresh()
# Clear old features
self.viewer.clear_features()
self.load_layer_features(point)
def update_earthmine_features(self, viewfeatures):
self.viewer.clear_features()
if viewfeatures:
self.load_layer_features()
def load_layer_features(self, point=None, layers=None):
# TODO Move this logic into the viewer and let it track it's position
if point is None and self.marker.map_pos is None:
return
if point is None:
point = self.marker.map_pos
area, units = self.distancearea()
rect = search_area(units, area, point)
if layers is None:
layers = self.visible_layers()
for layer in layers:
transform = self.coordinatetransform(layer)
# Transform the rect
source = self.canvas.mapRenderer().destinationCrs()
dest = layer.crs()
recttransform = QgsCoordinateTransform(source, dest)
rect = recttransform.transformBoundingBox(rect)
features = list(get_features_in_area(layer, rect, transform, self.canvas.mapSettings()))
geomtype = layer.geometryType()
layerdata = dict(id=layer.id(), geomtype=QGis.vectorGeometryType(geomtype))
self.viewer.load_features(layerdata, features)
# noinspection PyMethodMayBeStatic
def tr(self, message):
"""Get the translation for a string using Qt translation API.
We implement this ourselves since we do not inherit QObject.
:param message: String for translation.
:type message: str, QString
:returns: Translated version of message.
:rtype: QString
"""
# noinspection PyTypeChecker,PyArgumentList,PyCallByClass
return QCoreApplication.translate("EarthMineQGIS", message)
def add_action(
self,
icon_path,
text,
callback,
enabled_flag=True,
add_to_menu=True,
add_to_toolbar=True,
status_tip=None,
whats_this=None,
parent=None,
):
"""Add a toolbar icon to the InaSAFE toolbar.
:param icon_path: Path to the icon for this action. Can be a resource
path (e.g. ':/plugins/foo/bar.png') or a normal file system path.
:type icon_path: str
:param text: Text that should be shown in menu items for this action.
:type text: str
:param callback: Function to be called when the action is triggered.
:type callback: function
:param enabled_flag: A flag indicating if the action should be enabled
by default. Defaults to True.
:type enabled_flag: bool
:param add_to_menu: Flag indicating whether the action should also
be added to the menu. Defaults to True.
:type add_to_menu: bool
:param add_to_toolbar: Flag indicating whether the action should also
be added to the toolbar. Defaults to True.
:type add_to_toolbar: bool
:param status_tip: Optional text to s, "Earhtmine"how in a popup when mouse pointer
hovers over the action.
:type status_tip: str
:param parent: Parent widget for the new action. Defaults None.
:type parent: QWidget
:param whats_this: Optional text to show in the status bar when the
mouse pointer hovers over the action.
:returns: The action that was created. Note that the action is also
added to self.actions list.
:rtype: QAction
"""
icon = QIcon(icon_path)
action = QAction(icon, text, parent)
action.triggered.connect(callback)
action.setEnabled(enabled_flag)
if status_tip is not None:
action.setStatusTip(status_tip)
if whats_this is not None:
action.setWhatsThis(whats_this)
if add_to_toolbar:
self.toolbar.addAction(action)
if add_to_menu:
self.iface.addPluginToMenu(self.menu, action)
self.actions.append(action)
return action
def open_viewer(self):
"""Run method that performs all the real work"""
try:
settings = self.earthmine_settings()
except EarthmineSettingsError as ex:
self.onError(ex.message)
self.show_settings()
return
url = settings["viewerUrl"]
if not url.startswith("http"):
url = url.replace("\\\\", "\\")
url = QUrl.fromLocalFile(url)
else:
url = QUrl(url)
if not self.viewer.isVisible():
self.iface.addDockWidget(Qt.RightDockWidgetArea, self.viewer)
self.viewer.loadviewer(url)
def show_settings(self):
self.settingsdialog.show()
class EarthMineQGIS(QObject):
"""QGIS Plugin Implementation."""
def __init__(self, iface):
"""Constructor.
:param iface: An interface instance that will be passed to this class
which provides the hook by which you can manipulate the QGIS
application at run time.
:type iface: QgsInterface
"""
# Save reference to the QGIS interface
super(EarthMineQGIS, self).__init__()
self.movingfeature = None
self.iface = iface
self.viewer = None
self.canvas = self.iface.mapCanvas()
self.settings = QSettings()
# initialize plugin directory
self.plugin_dir = os.path.dirname(__file__)
# initialize locale
locale = QSettings().value('locale/userLocale')[0:2]
locale_path = os.path.join(self.plugin_dir, 'i18n',
'EarthMineQGIS_{}.qm'.format(locale))
if os.path.exists(locale_path):
self.translator = QTranslator()
self.translator.load(locale_path)
if qVersion() > '4.3.3':
QCoreApplication.installTranslator(self.translator)
self.pointtool = QgsMapToolEmitPoint(self.canvas)
self.pointtool.canvasClicked.connect(self.set_viewer_location)
self.settingsdialog = SettingsDialog(self.iface.mainWindow())
self.actions = []
self.menu = self.tr(u'&Earthmine')
self.toolbar = self.iface.addToolBar(u'EarthMineQGIS')
self.toolbar.setObjectName(u'EarthMineQGIS')
self.legend = self.iface.legendInterface()
emcolor = QColor(1, 150, 51)
self.tempband = QgsRubberBand(self.canvas, QGis.Line)
self.tempband.setWidth(5)
self.tempband.setColor(emcolor)
self.tempbandpoints = QgsRubberBand(self.canvas, QGis.Point)
self.tempbandpoints.setWidth(7)
self.tempbandpoints.setColor(emcolor)
self.movingband = QgsRubberBand(self.canvas, QGis.Point)
self.movingband.setWidth(5)
self.movingband.setColor(emcolor)
self.layersignals = []
self.marker = None
def initGui(self):
"""Create the menu entries and toolbar icons inside the QGIS GUI."""
icon_path = ':/icons/settings'
self.add_action(icon_path,
text=self.tr(u'Show Settings'),
callback=self.show_settings,
parent=self.iface.mainWindow())
icon_path = ':/icons/viewer'
self.add_action(icon_path,
text=self.tr(u'Earthmine Viewer'),
callback=self.open_viewer,
parent=self.iface.mainWindow())
self.marker = PostionMarker(self.canvas)
self.marker.hide()
self.viewer = Viewer(callbackobject=self)
self.viewer.trackingChanged.connect(self.marker.setTracking)
self.viewer.setLocationTriggered.connect(
partial(self.canvas.setMapTool, self.pointtool))
self.viewer.updateFeatures.connect(self.update_earthmine_features)
self.viewer.layerChanged.connect(self.iface.setActiveLayer)
self.viewer.clearLine.connect(self.clear_bands)
self.viewer.closed.connect(self.remove_items)
self.iface.currentLayerChanged.connect(
self.viewer.update_current_layer)
cursor = QCursor(QPixmap(":/icons/location"))
self.pointtool.setCursor(cursor)
self.pointtool.setAction(self.viewer.setlocationaction)
def remove_items(self):
self.marker.setTracking(False)
self.disconnect_projectsignals()
self.iface.actionPan().trigger()
def unload(self):
"""Removes the plugin menu item and icon from QGIS GUI."""
self.canvas.scene().removeItem(self.marker)
del self.marker
self.disconnect_projectsignals()
for action in self.actions:
self.iface.removePluginMenu(self.tr(u'&Earthmine'), action)
self.iface.removeToolBarIcon(action)
del self.toolbar
self.iface.removeDockWidget(self.viewer)
self.viewer.deleteLater()
def disconnect_projectsignals(self):
safe_disconnect(QgsMapLayerRegistry.instance().layerWasAdded,
self.connect_layer_signals)
safe_disconnect(QgsMapLayerRegistry.instance().layersRemoved,
self.layers_removed)
safe_disconnect(self.canvas.layersChanged, self.layers_changed)
safe_disconnect(self.iface.projectRead, self.connect_signals)
safe_disconnect(self.canvas.selectionChanged, self.selection_changed)
safe_disconnect(self.canvas.selectionChanged,
self.viewer.selection_changed)
def clear_bands(self):
self.tempband.reset(QGis.Line)
self.tempbandpoints.reset(QGis.Point)
def visible_layers(self):
"""
Return the visible layers shown in the map canvas
:return:
"""
return (layer for layer, visible in self.layers_with_states()
if visible)
def layers_with_states(self):
for layer in maplayers():
if not layer.type() == QgsMapLayer.VectorLayer:
continue
if not layer.geometryType() in [QGis.Point, QGis.Line]:
continue
yield layer, self.legend.isLayerVisible(layer)
def _layer_feature_added(self, featureid):
layer = self.sender()
if not layer:
return
self.layer_feature_added(layer, featureid)
def layer_feature_added(self, layer, featureid):
if not self.viewer:
return
feature = layer.getFeatures(QgsFeatureRequest(featureid)).next()
renderer = layer.rendererV2()
transform = self.coordinatetransform(layer)
featuredata = to_feature_data(layer.id(), feature, renderer, transform)
geomtype = layer.geometryType()
layerdata = dict(id=layer.id(),
geomtype=QGis.vectorGeometryType(geomtype))
self.viewer.load_features(layerdata, featuredata)
def _layer_feature_delete(self, featureid):
layer = self.sender()
if not layer:
return
self.layer_feature_delete(layer, featureid)
def layer_feature_delete(self, layer, featureid):
if not self.viewer:
return
self.viewer.remove_feature(layer.id(), featureid)
def _layer_geometry_changed(self, featureid, geometry):
layer = self.sender()
if not layer:
return
self.layer_geometry_changed(layer, featureid, geometry)
def layer_geometry_changed(self, layer, featureid, geometry):
if not self.viewer:
return
geomtype = layer.geometryType()
if geomtype == QGis.Point:
geom = geometry.asPoint()
transform = self.coordinatetransform(layer)
point = transform.transform(
geom, QgsCoordinateTransform.ReverseTransform)
location = dict(lat=point.y(), lng=point.x())
self.viewer.edit_feature(layer.id(), featureid, [location])
elif geomtype == QGis.Line:
self.layer_feature_delete(layer, featureid)
self.layer_feature_added(layer, featureid)
def connect_layer_signals(self, layer):
if not layer.type() == QgsMapLayer.VectorLayer:
return
layer.featureAdded.connect(self._layer_feature_added)
layer.featureDeleted.connect(self._layer_feature_delete)
layer.editingStarted.connect(self.layer_editstate_changed)
layer.editingStopped.connect(self.layer_editstate_changed)
# HACK The new style doesn't work here
# http://hub.qgis.org/issues/6573
signal = SIGNAL("geometryChanged(QgsFeatureId, QgsGeometry&)")
self.connect(layer, signal, self._layer_geometry_changed)
self.load_layer_features(layers=[layer])
def layer_editstate_changed(self):
layer = self.sender()
if layer == self.iface.activeLayer():
self.viewer.layer_changed(layer)
def disconnect_signals(self):
self.disconnect_projectsignals()
for layer in maplayers():
if not layer.type() == QgsMapLayer.VectorLayer:
return
safe_disconnect(layer.featureAdded, self._layer_feature_added)
safe_disconnect(layer.featureDeleted, self._layer_feature_delete)
safe_disconnect(layer.editingStarted, self.layer_editstate_changed)
safe_disconnect(layer.editingStopped, self.layer_editstate_changed)
# HACK The new style doesn't work here
# http://hub.qgis.org/issues/6573
signal = SIGNAL("geometryChanged(QgsFeatureId, QgsGeometry&)")
self.disconnect(layer, signal, self._layer_geometry_changed)
def connect_signals(self):
for layer in maplayers():
self.connect_layer_signals(layer)
self.center_on_canvas()
def set_viewer_location(self, point, mousebutton):
transform = self.coordinatetransform()
point = transform.transform(point,
QgsCoordinateTransform.ReverseTransform)
self.viewer.set_location(point)
def distancearea(self):
area = QgsDistanceArea()
dest = self.canvas.mapRenderer().destinationCrs()
area.setSourceCrs(dest)
return area, dest.mapUnits()
def coordinatetransform(self, layer=None):
"""
Return the transform for WGS84 -> QGIS projection.
"""
source = QgsCoordinateReferenceSystem()
source.createFromWkt(
'GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137.0,298.257223563]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]]'
)
if not layer:
dest = self.canvas.mapRenderer().destinationCrs()
else:
dest = layer.crs()
transform = QgsCoordinateTransform(source, dest)
return transform
def earthmine_settings(self):
settings = {}
with settinggroup(self.settings, "plugins/Earthmine"):
for key in [
'serviceUrl', 'baseDataUrl', "apiKey", 'secretKey',
'viewerUrl'
]:
if not self.settings.contains(key):
raise EarthmineSettingsError("{} not set".format(key))
value = self.settings.value(key, type=str)
if value is None:
raise EarthmineSettingsError("{} not set".format(key))
settings[key] = value
return settings
@pyqtSlot()
def ready(self):
"""
Called when the viewer is ready to be started. At this point the viewer hasn't been loaded
so no other methods apart from startViewer will be handled.
"""
settings = self.earthmine_settings()
self.viewer.startViewer(settings)
@pyqtSlot()
def viewerReady(self):
"""
Called once the viewer is loaded and ready to get location events.
"""
self.disconnect_signals()
self.connect_signals()
self.iface.projectRead.connect(self.connect_signals)
self.canvas.layersChanged.connect(self.layers_changed)
self.canvas.selectionChanged.connect(self.selection_changed)
self.canvas.selectionChanged.connect(self.viewer.selection_changed)
QgsMapLayerRegistry.instance().layersRemoved.connect(
self.layers_removed)
QgsMapLayerRegistry.instance().layerWasAdded.connect(
self.connect_layer_signals)
self.center_on_canvas()
self.viewer.activelayercombo.setLayer(self.iface.activeLayer())
def center_on_canvas(self):
point = self.canvas.extent().center()
transform = self.coordinatetransform()
point = transform.transform(point,
QgsCoordinateTransform.ReverseTransform)
self.viewer.set_location(point)
self.viewer.infoaction.toggle()
def selection_changed(self, layer):
ids = [feature.id() for feature in layer.selectedFeatures()]
if not ids:
self.viewer.clear_selection(layer.id())
else:
self.viewer.set_selection(layer.id(), ids)
def layers_changed(self):
layerstates = self.layers_with_states()
for layer, visible in layerstates:
layerid = layer.id()
viewerloaded = self.viewer.layer_loaded(layerid)
QgsMessageLog.instance().logMessage(layerid, "Earthmine")
QgsMessageLog.instance().logMessage(
"Viewer State:" + str(viewerloaded), "Earthmine")
QgsMessageLog.instance().logMessage("QGIS State:" + str(visible),
"Earthmine")
if (viewerloaded and visible) or (not viewerloaded
and not visible):
QgsMessageLog.instance().logMessage("Ignoring as states match",
"Earthmine")
continue
if viewerloaded and not visible:
QgsMessageLog.instance().logMessage(
"Clearing layer because viewer loaded and disabled in QGIS",
"Earthmine")
self.viewer.clear_layer_features(layerid)
continue
if not viewerloaded and visible:
QgsMessageLog.instance().logMessage("Loading layer",
"Earthmine")
self.load_layer_features(layers=[layer])
continue
def layers_removed(self, layers):
for layerid in layers:
self.viewer.clear_layer_features(layerid)
@pyqtSlot(str, float, float)
def viewChanged(self, event, yaw, angle):
self.marker.setAngle(angle)
self.marker.setYaw(yaw)
@pyqtSlot(str, str)
def getInfo(self, layerid, featureid):
featureid = int(featureid)
activelayer = self.iface.activeLayer()
if not activelayer:
return
activetool = self.viewer.active_tool()
if not activetool in ["Info", "Select"]:
return
# Only show information for the active layer
if not layerid == activelayer.id():
return
layer = layer_by_id(layerid)
if activetool == "Select":
layer.setSelectedFeatures([featureid])
elif activetool == "Info":
rq = QgsFeatureRequest(featureid)
feature = layer.getFeatures(rq).next()
dlg = get_feature_form(layer, feature)
if dlg.dialog().exec_():
self.canvas.refresh()
@pyqtSlot(str, str, float, float, bool)
def featureMoved(self, layerid, featureid, lat, lng, end):
layer = layer_by_id(layerid)
transform = self.coordinatetransform(layer)
point = transform.transform(lng, lat)
if not end:
self.movingband.show()
self.movingband.setToGeometry(QgsGeometry.fromPoint(point), layer)
self.movingband.updatePosition()
self.movingband.update()
else:
self.movingband.hide()
feature = feature_by_id(layer, featureid)
startpoint = feature.geometry().asPoint()
dx = point.x() - startpoint.x()
dy = point.y() - startpoint.y()
layer.beginEditCommand("Feature Moved")
# Block signals for this move as the geometry changed signal will re add the geometry on use.
layer.blockSignals(True)
layer.translateFeature(feature.id(), dx, dy)
layer.blockSignals(False)
self.canvas.refresh()
layer.endEditCommand()
@pyqtSlot(str, str)
def onError(self, message, stacktrace=None):
self.iface.messageBar().pushMessage("Earthmine", message,
QgsMessageBar.WARNING)
QgsMessageLog.logMessage(stacktrace, "Earthmine")
@pyqtSlot(float, float, float)
def addPoint(self, lat, lng, z):
layer = self.viewer.active_layer
if not layer.isEditable():
self.iface.messageBar().pushMessage(
"Earthmine",
"Selected layer isn't editable. Please enable edit mode to add features",
duration=3,
level=QgsMessageBar.WARNING)
return
transform = self.coordinatetransform(layer)
point = transform.transform(lng, lat)
geom = QgsGeometry.fromPoint(point)
self.add_feature(layer, geom, z)
def add_feature(self, layer, geom, z=None):
feature = QgsFeature(layer.pendingFields())
if z and self.viewer.copyZvalue:
try:
feature['Z'] = z
except KeyError:
QgsMessageLog.log("No Z found on layer {}".format(
layer.name()))
pass
feature.setGeometry(geom)
dlg = get_feature_form(layer, feature, isadd=True)
if dlg.dialog().exec_():
self.canvas.refresh()
@pyqtSlot(str, bool, str)
def drawLine(self, points, end, stats):
points = json.loads(points)
stats = json.loads(stats)
QgsMessageLog.logMessage(str(stats), "Earthmine")
self.tempband.reset(QGis.Line)
self.tempbandpoints.reset(QGis.Point)
color = QColor(self.viewer.current_action_color)
self.tempband.setColor(color)
self.tempbandpoints.setColor(color)
layer = self.viewer.active_layer
transform = self.coordinatetransform(layer)
earthminepoints = []
for point in points:
newpoint = transform.transform(point['lng'], point['lat'])
self.tempband.addPoint(newpoint)
self.tempbandpoints.addPoint(newpoint)
empoint = EarthminePoint(newpoint, point)
earthminepoints.append(empoint)
if end and not self.viewer.mode == "Vertical":
geom = self.tempband.asGeometry()
self.add_feature(layer, geom)
self.clear_bands()
self.viewer.geom = EarthmineLine(earthminepoints, stats)
self.tempband.show()
self.tempbandpoints.show()
@pyqtSlot(str, str, str, float)
def locationChanged(self, lat, lng, yaw, angle):
transform = self.coordinatetransform()
point = transform.transform(float(lng), float(lat))
self.marker.setCenter(point)
yaw = float(yaw)
self.marker.setAngle(angle)
self.marker.setYaw(yaw)
self.marker.setTracking(self.viewer.tracking)
if self.marker.tracking:
rect = QgsRectangle(point, point)
extentlimt = QgsRectangle(self.canvas.extent())
extentlimt.scale(0.95)
if not extentlimt.contains(point):
self.canvas.setExtent(rect)
self.canvas.refresh()
# Clear old features
self.viewer.clear_features()
self.load_layer_features(point)
def update_earthmine_features(self, viewfeatures):
self.viewer.clear_features()
if viewfeatures:
self.load_layer_features()
def load_layer_features(self, point=None, layers=None):
# TODO Move this logic into the viewer and let it track it's position
if point is None and self.marker.map_pos is None:
return
if point is None:
point = self.marker.map_pos
area, units = self.distancearea()
rect = search_area(units, area, point)
if layers is None:
layers = self.visible_layers()
for layer in layers:
transform = self.coordinatetransform(layer)
# Transform the rect
source = self.canvas.mapRenderer().destinationCrs()
dest = layer.crs()
recttransform = QgsCoordinateTransform(source, dest)
rect = recttransform.transformBoundingBox(rect)
features = list(
get_features_in_area(layer, rect, transform,
self.canvas.mapSettings()))
geomtype = layer.geometryType()
layerdata = dict(id=layer.id(),
geomtype=QGis.vectorGeometryType(geomtype))
self.viewer.load_features(layerdata, features)
# noinspection PyMethodMayBeStatic
def tr(self, message):
"""Get the translation for a string using Qt translation API.
We implement this ourselves since we do not inherit QObject.
:param message: String for translation.
:type message: str, QString
:returns: Translated version of message.
:rtype: QString
"""
# noinspection PyTypeChecker,PyArgumentList,PyCallByClass
return QCoreApplication.translate('EarthMineQGIS', message)
def add_action(self,
icon_path,
text,
callback,
enabled_flag=True,
add_to_menu=True,
add_to_toolbar=True,
status_tip=None,
whats_this=None,
parent=None):
"""Add a toolbar icon to the InaSAFE toolbar.
:param icon_path: Path to the icon for this action. Can be a resource
path (e.g. ':/plugins/foo/bar.png') or a normal file system path.
:type icon_path: str
:param text: Text that should be shown in menu items for this action.
:type text: str
:param callback: Function to be called when the action is triggered.
:type callback: function
:param enabled_flag: A flag indicating if the action should be enabled
by default. Defaults to True.
:type enabled_flag: bool
:param add_to_menu: Flag indicating whether the action should also
be added to the menu. Defaults to True.
:type add_to_menu: bool
:param add_to_toolbar: Flag indicating whether the action should also
be added to the toolbar. Defaults to True.
:type add_to_toolbar: bool
:param status_tip: Optional text to s, "Earhtmine"how in a popup when mouse pointer
hovers over the action.
:type status_tip: str
:param parent: Parent widget for the new action. Defaults None.
:type parent: QWidget
:param whats_this: Optional text to show in the status bar when the
mouse pointer hovers over the action.
:returns: The action that was created. Note that the action is also
added to self.actions list.
:rtype: QAction
"""
icon = QIcon(icon_path)
action = QAction(icon, text, parent)
action.triggered.connect(callback)
action.setEnabled(enabled_flag)
if status_tip is not None:
action.setStatusTip(status_tip)
if whats_this is not None:
action.setWhatsThis(whats_this)
if add_to_toolbar:
self.toolbar.addAction(action)
if add_to_menu:
self.iface.addPluginToMenu(self.menu, action)
self.actions.append(action)
return action
def open_viewer(self):
"""Run method that performs all the real work"""
try:
settings = self.earthmine_settings()
except EarthmineSettingsError as ex:
self.onError(ex.message)
self.show_settings()
return
url = settings["viewerUrl"]
if not url.startswith("http"):
url = url.replace("\\\\", "\\")
url = QUrl.fromLocalFile(url)
else:
url = QUrl(url)
if not self.viewer.isVisible():
self.iface.addDockWidget(Qt.RightDockWidgetArea, self.viewer)
self.viewer.loadviewer(url)
def show_settings(self):
self.settingsdialog.show()
