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qad_highlight.py
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qad_highlight.py
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# -*- coding: utf-8 -*-
"""
/***************************************************************************
QAD Quantum Aided Design plugin
Classe per gestire l'evidenziazione delle geometrie
-------------------
begin : 2015-12-12
copyright : iiiii
email : hhhhh
developers : bbbbb aaaaa ggggg
***************************************************************************/
/***************************************************************************
* *
* 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. *
* *
***************************************************************************/
"""
# Import the PyQt and QGIS libraries
from qgis.PyQt.QtCore import *
from qgis.PyQt.QtGui import *
from qgis.core import *
from qgis.gui import *
from .qad_variables import QadVariables
#===============================================================================
# getQGISColorForHighlight
#===============================================================================
def getQGISColorForHighlight():
"""
La funzione legge il colore impostato da QGIS per il rubber band di tipo <geometryType>.
Se <alternativeBand> = True, il rubber band sarà impostato con più trasparenza
"""
settings = QSettings()
color = QColor(int(settings.value( "/qgis/digitizing/line_color_red", 1)), \
int(settings.value( "/qgis/digitizing/line_color_green", 1)), \
int(settings.value( "/qgis/digitizing/line_color_blue", 1)))
alpha = float(int(settings.value( "/qgis/digitizing/line_color_alpha", 200)) / 255.0)
color.setAlphaF(alpha)
return color
#===============================================================================
# createHighlight
#===============================================================================
def createHighlight(mapCanvas, geometry_feature, layer, borderColor = None, fillColor = None):
"""
la funzione crea un rubber band di tipo <geometryType> con le impostazioni di QGIS.
Se <alternativeBand> = True, il rubber band sarà impostato con più trasparenza e tipolinea punteggiato
"""
settings = QSettings()
width = int(settings.value( "/qgis/digitizing/line_width", 1))
hl = QgsHighlight(mapCanvas, geometry_feature, layer)
if borderColor is None:
borderColor = getQGISColorForHighlight()
hl.setColor(borderColor)
if fillColor is None:
hl.setFillColor(borderColor)
else:
hl.setFillColor(fillColor)
return hl
# Classe che gestisce l'evidenziazione delle geometrie
class QadHighlight():
def __init__(self, mapCanvas, borderColor = None, fillColor = None):
self.mapCanvas = mapCanvas
self.__highlight = []
def __del__(self):
self.reset()
for highlight in self.__highlight:
self.mapCanvas.scene().removeItem(highlight)
del self.__highlight[:]
def hide(self):
for highlight in self.__highlight:
highlight.hide()
def show(self):
for highlight in self.__highlight:
highlight.show()
def addGeometry(self, geom, layer, borderColor = None, fillColor = None):
highlight = createHighlight(self.mapCanvas, geom, layer, borderColor, fillColor)
highlight.show()
self.__highlight.append(highlight)
def addGeometries(self, geoms, layer, borderColor = None, fillColor = None):
for g in geoms:
self.addGeometry(g, layer, borderColor, fillColor)
def reset(self):
self.hide()
for highlight in self.__highlight:
self.mapCanvas.scene().removeItem(highlight)
del self.__highlight[:]