forked from lmotta/mapswipetool_plugin
/
mapswipetool.py
155 lines (134 loc) · 5.42 KB
/
mapswipetool.py
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# -*- coding: utf-8 -*-
"""
/***************************************************************************
Name : MapSwipe tool
Description : Plugin for swipe active layer
Date : October, 2015
copyright : (C) 2015 by Hirofumi Hayashi and Luiz Motta
email : hayashi@apptec.co.jp and motta.luiz@gmail.com
***************************************************************************/
/***************************************************************************
* *
* 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. *
* *
***************************************************************************/
"""
__author__ = 'Luiz Motta'
__date__ = '2015-10-14'
__copyright__ = '(C) 2018, Luiz Motta'
__revision__ = '$Format:%H$'
from qgis.PyQt.QtCore import Qt, QPoint, pyqtSlot, QCoreApplication
from qgis.PyQt.QtGui import QCursor
from qgis.core import QgsLayerTreeLayer, QgsProject
from qgis.gui import QgsMapTool
from .swipemap import SwipeMap
from .translate import Translate
class MapSwipeTool(QgsMapTool):
def __init__(self, iface):
canvas = iface.mapCanvas()
super().__init__( canvas )
self.view = iface.layerTreeView()
self.msgBar = iface.messageBar()
self.swipe = SwipeMap( canvas )
self.checkDirection = self.hasSwipe = self.disabledSwipe = None
self.firstPoint = QPoint()
self.cursorV = QCursor( Qt.SplitVCursor )
self.cursorH = QCursor( Qt.SplitHCursor )
self.pluginName = 'MapSwipeTool'
self.translate = Translate( self.pluginName.lower() )
def _connect(self, isConnect = True):
signal_slot = (
{ 'signal': QgsProject.instance().removeAll, 'slot': self.disable },
{ 'signal': self.view.selectionModel().selectionChanged, 'slot': self.setLayersSwipe },
{ 'signal': self.canvas().mapCanvasRefreshed, 'slot': self.swipe.setMap }
)
if isConnect:
for item in signal_slot:
item['signal'].connect( item['slot'] )
else:
for item in signal_slot:
item['signal'].disconnect( item['slot'] )
def activate(self):
super().activate()
self.canvas().setCursor( QCursor( Qt.PointingHandCursor ) )
self._connect()
self.hasSwipe = False
self.disabledSwipe = False
self.setLayersSwipe( None, None )
def deactivate(self):
super().deactivate()
self.deactivated.emit()
self.swipe.clear()
self._connect( False )
def canvasPressEvent(self, e):
if self.checkLayer():
self.hasSwipe = True
self.firstPoint.setX( e.x() )
self.firstPoint.setY( e.y() )
self.checkDirection = True
def canvasReleaseEvent(self, e):
self.hasSwipe = False
self.canvas().setCursor( QCursor( Qt.PointingHandCursor ) )
def canvasMoveEvent(self, e):
if self.hasSwipe:
if self.checkDirection:
dX = abs( e.x() - self.firstPoint.x() )
dY = abs( e.y() - self.firstPoint.y() )
isVertical = dX > dY
self.swipe.setIsVertical( isVertical )
self.checkDirection = False
self.canvas().setCursor( self.cursorH if isVertical else self.cursorV )
self.swipe.setLength( e.x(), e.y() )
def checkLayer(self):
if len( self.swipe.layers ) == 0:
msg = QCoreApplication.translate('MapSwipeTool', 'Select Layer or Group in legend.')
self.msgBar.clearWidgets()
self.msgBar.pushWarning( self.pluginName, msg )
return False
else:
return True
@pyqtSlot('QItemSelection,QItemSelection')
def setLayersSwipe(self, selected=None, deselected=None):
if self.disabledSwipe:
return
layers = msg = None
node = self.view.currentNode()
if node.itemVisibilityChecked():
node.setItemVisibilityChecked( False )
if isinstance( node, QgsLayerTreeLayer ):
layer = node.layer()
if not layer.isSpatial():
f = QCoreApplication.translate('MapSwipeTool', "Active layer '{}' need be a spatial layer." )
msg = f.format( layer.name() )
self.msgBar.pushWarning( self.pluginName, msg )
return
layers = [ layer ]
f = QCoreApplication.translate('MapSwipeTool', "Active layer is '{}'." )
msg = f.format( layer.name() )
else:
group = self.view.currentGroupNode()
if group.parent() is None: # Root
return
ltls = list( filter( lambda ltl: ltl.itemVisibilityChecked(), group.findLayers() ) )
if len( ltls ) == 0:
self.msgBar.clearWidgets()
f = QCoreApplication.translate('MapSwipeTool', "Active group '{}' need at least one item with visible checked")
msg = f.format( group.name() )
self.msgBar.pushWarning( self.pluginName, msg )
return
layers = map( lambda ltl: ltl.layer(), ltls )
f = QCoreApplication.translate('MapSwipeTool', "Active group is '{}'.")
msg = f.format( group.name() )
self.swipe.clear()
self.swipe.setLayers( layers )
self.swipe.setMap()
self.msgBar.clearWidgets()
self.msgBar.pushInfo( self.pluginName, msg )
@pyqtSlot()
def disable(self):
self.swipe.clear()
self.hasSwipe = False
self.disabledSwipe = True