2ca08c69ce
- added vertical lines / regions for plots - added gradient editor widget - many bugfixes - cleaned up imageview a bit
889 lines
33 KiB
Python
889 lines
33 KiB
Python
# -*- coding: utf-8 -*-
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"""
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widgets.py - Interactive graphics items for GraphicsView (ROI widgets)
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Copyright 2010 Luke Campagnola
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Distributed under MIT/X11 license. See license.txt for more infomation.
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Implements a series of graphics items which display movable/scalable/rotatable shapes
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for use as region-of-interest markers. ROI class automatically handles extraction
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of array data from ImageItems.
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"""
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from PyQt4 import QtCore, QtGui, QtOpenGL, QtSvg
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from numpy import array, arccos, dot, pi, zeros, vstack, ubyte, fromfunction, ceil, floor, arctan2
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from numpy.linalg import norm
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import scipy.ndimage as ndimage
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from Point import *
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from math import cos, sin
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from ObjectWorkaround import *
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def rectStr(r):
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return "[%f, %f] + [%f, %f]" % (r.x(), r.y(), r.width(), r.height())
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# Multiple inheritance not allowed in PyQt. Retarded workaround:
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#class QObjectWorkaround:
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#def __init__(self):
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#self._qObj_ = QtCore.QObject()
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#def __getattr__(self, attr):
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#if attr == '_qObj_':
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#raise Exception("QObjectWorkaround not initialized!")
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#return getattr(self._qObj_, attr)
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#def connect(self, *args):
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#return QtCore.QObject.connect(self._qObj_, *args)
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class ROI(QtGui.QGraphicsItem, QObjectWorkaround):
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def __init__(self, pos, size=Point(1, 1), angle=0.0, invertible=False, maxBounds=None, snapSize=1.0, scaleSnap=False, translateSnap=False, rotateSnap=False, parent=None):
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QObjectWorkaround.__init__(self)
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QtGui.QGraphicsItem.__init__(self, parent)
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pos = Point(pos)
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size = Point(size)
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self.aspectLocked = False
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self.translatable = True
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self.pen = QtGui.QPen(QtGui.QColor(255, 255, 255))
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self.handlePen = QtGui.QPen(QtGui.QColor(150, 255, 255))
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self.handles = []
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self.state = {'pos': pos, 'size': size, 'angle': angle}
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self.lastState = None
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self.setPos(pos)
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self.rotate(-angle * 180. / pi)
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self.setZValue(10)
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self.handleSize = 5
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self.invertible = invertible
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self.maxBounds = maxBounds
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self.snapSize = snapSize
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self.translateSnap = translateSnap
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self.rotateSnap = rotateSnap
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self.scaleSnap = scaleSnap
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self.setFlag(self.ItemIsSelectable, True)
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def setZValue(self, z):
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QtGui.QGraphicsItem.setZValue(self, z)
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for h in self.handles:
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h['item'].setZValue(z+1)
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def sceneBounds(self):
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return self.sceneTransform().mapRect(self.boundingRect())
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def parentBounds(self):
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return self.mapToParent(self.boundingRect()).boundingRect()
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def setPen(self, pen):
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self.pen = pen
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self.update()
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def setPos(self, pos, update=True):
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pos = Point(pos)
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self.state['pos'] = pos
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QtGui.QGraphicsItem.setPos(self, pos)
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if update:
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self.handleChange()
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def setSize(self, size, update=True):
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size = Point(size)
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self.prepareGeometryChange()
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self.state['size'] = size
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if update:
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self.updateHandles()
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self.handleChange()
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def addTranslateHandle(self, pos, axes=None, item=None):
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pos = Point(pos)
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return self.addHandle({'type': 't', 'pos': pos, 'item': item})
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def addFreeHandle(self, pos, axes=None, item=None):
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pos = Point(pos)
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return self.addHandle({'type': 'f', 'pos': pos, 'item': item})
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def addScaleHandle(self, pos, center, axes=None, item=None):
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pos = Point(pos)
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center = Point(center)
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info = {'type': 's', 'center': center, 'pos': pos, 'item': item}
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if pos.x() == center.x():
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info['xoff'] = True
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if pos.y() == center.y():
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info['yoff'] = True
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return self.addHandle(info)
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def addRotateHandle(self, pos, center, item=None):
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pos = Point(pos)
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center = Point(center)
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return self.addHandle({'type': 'r', 'center': center, 'pos': pos, 'item': item})
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def addScaleRotateHandle(self, pos, center, item=None):
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pos = Point(pos)
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center = Point(center)
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if pos[0] != center[0] and pos[1] != center[1]:
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raise Exception("Scale/rotate handles must have either the same x or y coordinate as their center point.")
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return self.addHandle({'type': 'sr', 'center': center, 'pos': pos, 'item': item})
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def addHandle(self, info):
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if not info.has_key('item') or info['item'] is None:
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#print "BEFORE ADD CHILD:", self.childItems()
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h = Handle(self.handleSize, typ=info['type'], pen=self.handlePen, parent=self)
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#print "AFTER ADD CHILD:", self.childItems()
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h.setPos(info['pos'] * self.state['size'])
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info['item'] = h
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else:
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h = info['item']
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iid = len(self.handles)
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h.connectROI(self, iid)
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#h.mouseMoveEvent = lambda ev: self.pointMoveEvent(iid, ev)
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#h.mousePressEvent = lambda ev: self.pointPressEvent(iid, ev)
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#h.mouseReleaseEvent = lambda ev: self.pointReleaseEvent(iid, ev)
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self.handles.append(info)
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h.setZValue(self.zValue()+1)
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#if self.isSelected():
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#h.show()
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#else:
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#h.hide()
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return h
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def mapSceneToParent(self, pt):
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return self.mapToParent(self.mapFromScene(pt))
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def setSelected(self, s):
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QtGui.QGraphicsItem.setSelected(self, s)
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#print "select", self, s
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if s:
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for h in self.handles:
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h['item'].show()
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else:
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for h in self.handles:
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h['item'].hide()
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def mousePressEvent(self, ev):
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if ev.button() == QtCore.Qt.LeftButton:
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self.setSelected(True)
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if self.translatable:
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self.cursorOffset = self.scenePos() - ev.scenePos()
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self.emit(QtCore.SIGNAL('regionChangeStarted'), self)
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ev.accept()
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else:
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ev.ignore()
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def mouseMoveEvent(self, ev):
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#print "mouse move", ev.pos()
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if self.translatable:
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snap = None
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if self.translateSnap or (ev.modifiers() & QtCore.Qt.ControlModifier):
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snap = Point(self.snapSize, self.snapSize)
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newPos = ev.scenePos() + self.cursorOffset
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newPos = self.mapSceneToParent(newPos)
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self.translate(newPos - self.pos(), snap=snap)
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def mouseReleaseEvent(self, ev):
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if self.translatable:
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self.emit(QtCore.SIGNAL('regionChangeFinished'), self)
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def pointPressEvent(self, pt, ev):
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#print "press"
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self.emit(QtCore.SIGNAL('regionChangeStarted'), self)
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#self.pressPos = self.mapFromScene(ev.scenePos())
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#self.pressHandlePos = self.handles[pt]['item'].pos()
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def pointReleaseEvent(self, pt, ev):
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#print "release"
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self.emit(QtCore.SIGNAL('regionChangeFinished'), self)
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def stateCopy(self):
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sc = {}
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sc['pos'] = Point(self.state['pos'])
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sc['size'] = Point(self.state['size'])
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sc['angle'] = self.state['angle']
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return sc
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def updateHandles(self):
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#print "update", self.handles
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for h in self.handles:
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#print " try", h
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if h['item'] in self.childItems():
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p = h['pos']
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h['item'].setPos(h['pos'] * self.state['size'])
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#else:
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#print " Not child!", self.childItems()
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def checkPointMove(self, pt, pos, modifiers):
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return True
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def pointMoveEvent(self, pt, ev):
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self.movePoint(pt, ev.scenePos(), ev.modifiers())
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def movePoint(self, pt, pos, modifiers=QtCore.Qt.KeyboardModifier()):
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#print "movePoint", pos
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newState = self.stateCopy()
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h = self.handles[pt]
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#p0 = self.mapToScene(h['item'].pos())
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p0 = self.mapToScene(h['pos'] * self.state['size'])
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p1 = Point(pos)
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p0 = self.mapSceneToParent(p0)
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p1 = self.mapSceneToParent(p1)
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if h.has_key('center'):
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c = h['center']
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cs = c * self.state['size']
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#lpOrig = h['pos'] -
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#lp0 = self.mapFromScene(p0) - cs
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#lp1 = self.mapFromScene(p1) - cs
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lp0 = self.mapFromParent(p0) - cs
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lp1 = self.mapFromParent(p1) - cs
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if h['type'] == 't':
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#p0 = Point(self.mapToScene(h['item'].pos()))
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#p1 = Point(pos + self.mapToScene(self.pressHandlePos) - self.mapToScene(self.pressPos))
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snap = None
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if self.translateSnap or (modifiers & QtCore.Qt.ControlModifier):
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snap = Point(self.snapSize, self.snapSize)
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self.translate(p1-p0, snap=snap, update=False)
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elif h['type'] == 'f':
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h['item'].setPos(self.mapFromScene(pos))
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elif h['type'] == 's':
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#c = h['center']
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#cs = c * self.state['size']
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#p1 = (self.mapFromScene(ev.scenePos()) + self.pressHandlePos - self.pressPos) - cs
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if h['center'][0] == h['pos'][0]:
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lp1[0] = 0
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if h['center'][1] == h['pos'][1]:
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lp1[1] = 0
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if self.scaleSnap or (modifiers & QtCore.Qt.ControlModifier):
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lp1[0] = round(lp1[0] / self.snapSize) * self.snapSize
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lp1[1] = round(lp1[1] / self.snapSize) * self.snapSize
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hs = h['pos'] - c
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if hs[0] == 0:
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hs[0] = 1
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if hs[1] == 0:
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hs[1] = 1
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newSize = lp1 / hs
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if newSize[0] == 0:
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newSize[0] = newState['size'][0]
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if newSize[1] == 0:
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newSize[1] = newState['size'][1]
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if not self.invertible:
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if newSize[0] < 0:
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newSize[0] = newState['size'][0]
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if newSize[1] < 0:
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newSize[1] = newState['size'][1]
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if self.aspectLocked:
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newSize[0] = newSize[1]
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s0 = c * self.state['size']
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s1 = c * newSize
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cc = self.mapToParent(s0 - s1) - self.mapToParent(Point(0, 0))
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newState['size'] = newSize
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newState['pos'] = newState['pos'] + cc
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if self.maxBounds is not None:
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r = self.stateRect(newState)
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if not self.maxBounds.contains(r):
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return
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self.setPos(newState['pos'], update=False)
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self.prepareGeometryChange()
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self.state = newState
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self.updateHandles()
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elif h['type'] == 'r':
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#newState = self.stateCopy()
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#c = h['center']
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#cs = c * self.state['size']
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#p0 = Point(h['item'].pos()) - cs
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#p1 = (self.mapFromScene(ev.scenePos()) + self.pressHandlePos - self.pressPos) - cs
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if lp1.length() == 0 or lp0.length() == 0:
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return
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ang = newState['angle'] + lp0.angle(lp1)
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if ang is None:
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return
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if self.rotateSnap or (modifiers & QtCore.Qt.ControlModifier):
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ang = round(ang / (pi/12.)) * (pi/12.)
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tr = QtGui.QTransform()
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tr.rotate(-ang * 180. / pi)
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cc = self.mapToParent(cs) - (tr.map(cs) + self.state['pos'])
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newState['angle'] = ang
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newState['pos'] = newState['pos'] + cc
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if self.maxBounds is not None:
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r = self.stateRect(newState)
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if not self.maxBounds.contains(r):
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return
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self.setTransform(tr)
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self.setPos(newState['pos'], update=False)
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self.state = newState
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elif h['type'] == 'sr':
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#newState = self.stateCopy()
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if h['center'][0] == h['pos'][0]:
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scaleAxis = 1
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else:
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scaleAxis = 0
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#c = h['center']
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#cs = c * self.state['size']
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#p0 = Point(h['item'].pos()) - cs
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#p1 = (self.mapFromScene(ev.scenePos()) + self.pressHandlePos - self.pressPos) - cs
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if lp1.length() == 0 or lp0.length() == 0:
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return
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ang = newState['angle'] + lp0.angle(lp1)
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if ang is None:
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return
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if self.rotateSnap or (modifiers & QtCore.Qt.ControlModifier):
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ang = round(ang / (pi/12.)) * (pi/12.)
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hs = abs(h['pos'][scaleAxis] - c[scaleAxis])
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newState['size'][scaleAxis] = lp1.length() / hs
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if self.scaleSnap or (modifiers & QtCore.Qt.ControlModifier):
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newState['size'][scaleAxis] = round(newState['size'][scaleAxis] / self.snapSize) * self.snapSize
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if newState['size'][scaleAxis] == 0:
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newState['size'][scaleAxis] = 1
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c1 = c * newState['size']
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tr = QtGui.QTransform()
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tr.rotate(-ang * 180. / pi)
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cc = self.mapToParent(cs) - (tr.map(c1) + self.state['pos'])
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newState['angle'] = ang
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newState['pos'] = newState['pos'] + cc
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if self.maxBounds is not None:
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r = self.stateRect(newState)
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if not self.maxBounds.contains(r):
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return
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self.setTransform(tr)
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self.setPos(newState['pos'], update=False)
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self.prepareGeometryChange()
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self.state = newState
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self.updateHandles()
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self.handleChange()
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def handleChange(self):
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changed = False
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if self.lastState is None:
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changed = True
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else:
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for k in self.state.keys():
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if self.state[k] != self.lastState[k]:
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#print "state %s has changed; emit signal" % k
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changed = True
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self.lastState = self.stateCopy()
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if changed:
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self.update()
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self.emit(QtCore.SIGNAL('regionChanged'), self)
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def scale(self, s, center=[0,0]):
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c = self.mapToScene(Point(center) * self.state['size'])
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self.prepareGeometryChange()
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self.state['size'] = self.state['size'] * s
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c1 = self.mapToScene(Point(center) * self.state['size'])
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self.state['pos'] = self.state['pos'] + c - c1
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self.setPos(self.state['pos'])
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self.updateHandles()
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def translate(self, *args, **kargs):
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"""accepts either (x, y, snap) or ([x,y], snap) as arguments"""
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if 'snap' not in kargs:
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snap = None
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else:
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snap = kargs['snap']
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if len(args) == 1:
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pt = args[0]
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else:
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pt = args
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newState = self.stateCopy()
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newState['pos'] = newState['pos'] + pt
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if snap != None:
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newState['pos'][0] = round(newState['pos'][0] / snap[0]) * snap[0]
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newState['pos'][1] = round(newState['pos'][1] / snap[1]) * snap[1]
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#d = ev.scenePos() - self.mapToScene(self.pressPos)
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if self.maxBounds is not None:
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r = self.stateRect(newState)
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#r0 = self.sceneTransform().mapRect(self.boundingRect())
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d = Point(0,0)
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if self.maxBounds.left() > r.left():
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d[0] = self.maxBounds.left() - r.left()
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elif self.maxBounds.right() < r.right():
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d[0] = self.maxBounds.right() - r.right()
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if self.maxBounds.top() > r.top():
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d[1] = self.maxBounds.top() - r.top()
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elif self.maxBounds.bottom() < r.bottom():
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d[1] = self.maxBounds.bottom() - r.bottom()
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newState['pos'] += d
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self.state['pos'] = newState['pos']
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self.setPos(self.state['pos'])
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#if 'update' not in kargs or kargs['update'] is True:
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self.handleChange()
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def stateRect(self, state):
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r = QtCore.QRectF(0, 0, state['size'][0], state['size'][1])
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tr = QtGui.QTransform()
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tr.rotate(-state['angle'] * 180 / pi)
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r = tr.mapRect(r)
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return r.adjusted(state['pos'][0], state['pos'][1], state['pos'][0], state['pos'][1])
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def boundingRect(self):
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return QtCore.QRectF(0, 0, self.state['size'][0], self.state['size'][1])
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def paint(self, p, opt, widget):
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p.save()
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r = self.boundingRect()
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p.setRenderHint(QtGui.QPainter.Antialiasing)
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p.setPen(self.pen)
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p.translate(r.left(), r.top())
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p.scale(r.width(), r.height())
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p.drawRect(0, 0, 1, 1)
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p.restore()
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def getArraySlice(self, data, img, axes=(0,1), returnSlice=True):
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"""Return a tuple of slice objects that can be used to slice the region from data covered by this ROI.
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Also returns the transform which maps the ROI into data coordinates.
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If returnSlice is set to False, the function returns a pair of tuples with the values that would have
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been used to generate the slice objects. ((ax0Start, ax0Stop), (ax1Start, ax1Stop))"""
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#print "getArraySlice"
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## Determine shape of array along ROI axes
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dShape = (data.shape[axes[0]], data.shape[axes[1]])
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#print " dshape", dShape
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## Determine transform that maps ROI bounding box to image coordinates
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tr = self.sceneTransform() * img.sceneTransform().inverted()[0]
|
|
|
|
## Modify transform to scale from image coords to data coords
|
|
#m = QtGui.QTransform()
|
|
tr.scale(float(dShape[0]) / img.width(), float(dShape[1]) / img.height())
|
|
#tr = tr * m
|
|
|
|
## Transform ROI bounds into data bounds
|
|
dataBounds = tr.mapRect(self.boundingRect())
|
|
#print " boundingRect:", self.boundingRect()
|
|
#print " dataBounds:", dataBounds
|
|
|
|
## Intersect transformed ROI bounds with data bounds
|
|
intBounds = dataBounds.intersect(QtCore.QRectF(0, 0, dShape[0], dShape[1]))
|
|
#print " intBounds:", intBounds
|
|
|
|
## Determine index values to use when referencing the array.
|
|
bounds = (
|
|
(int(min(intBounds.left(), intBounds.right())), int(1+max(intBounds.left(), intBounds.right()))),
|
|
(int(min(intBounds.bottom(), intBounds.top())), int(1+max(intBounds.bottom(), intBounds.top())))
|
|
)
|
|
#print " bounds:", bounds
|
|
|
|
if returnSlice:
|
|
## Create slice objects
|
|
sl = [slice(None)] * data.ndim
|
|
sl[axes[0]] = slice(*bounds[0])
|
|
sl[axes[1]] = slice(*bounds[1])
|
|
return tuple(sl), tr
|
|
else:
|
|
return bounds, tr
|
|
|
|
|
|
def getArrayRegion(self, data, img, axes=(0,1)):
|
|
|
|
## transpose data so x and y are the first 2 axes
|
|
trAx = range(0, data.ndim)
|
|
trAx.remove(axes[0])
|
|
trAx.remove(axes[1])
|
|
tr1 = tuple(axes) + tuple(trAx)
|
|
arr = data.transpose(tr1)
|
|
|
|
## Determine the minimal area of the data we will need
|
|
(dataBounds, roiDataTransform) = self.getArraySlice(data, img, returnSlice=False, axes=axes)
|
|
|
|
## Pad data boundaries by 1px if possible
|
|
dataBounds = (
|
|
(max(dataBounds[0][0]-1, 0), min(dataBounds[0][1]+1, arr.shape[0])),
|
|
(max(dataBounds[1][0]-1, 0), min(dataBounds[1][1]+1, arr.shape[1]))
|
|
)
|
|
|
|
## Extract minimal data from array
|
|
arr1 = arr[dataBounds[0][0]:dataBounds[0][1], dataBounds[1][0]:dataBounds[1][1]]
|
|
|
|
## Update roiDataTransform to reflect this extraction
|
|
roiDataTransform *= QtGui.QTransform().translate(-dataBounds[0][0], -dataBounds[1][0])
|
|
### (roiDataTransform now maps from ROI coords to extracted data coords)
|
|
|
|
|
|
## Rotate array
|
|
if abs(self.state['angle']) > 1e-5:
|
|
arr2 = ndimage.rotate(arr1, self.state['angle'] * 180 / pi, order=1)
|
|
|
|
## update data transforms to reflect this rotation
|
|
rot = QtGui.QTransform().rotate(self.state['angle'] * 180 / pi)
|
|
roiDataTransform *= rot
|
|
|
|
## The rotation also causes a shift which must be accounted for:
|
|
dataBound = QtCore.QRectF(0, 0, arr1.shape[0], arr1.shape[1])
|
|
rotBound = rot.mapRect(dataBound)
|
|
roiDataTransform *= QtGui.QTransform().translate(-rotBound.left(), -rotBound.top())
|
|
|
|
else:
|
|
arr2 = arr1
|
|
|
|
|
|
|
|
### Shift off partial pixels
|
|
# 1. map ROI into current data space
|
|
roiBounds = roiDataTransform.mapRect(self.boundingRect())
|
|
|
|
# 2. Determine amount to shift data
|
|
shift = (int(roiBounds.left()) - roiBounds.left(), int(roiBounds.bottom()) - roiBounds.bottom())
|
|
if abs(shift[0]) > 1e-6 or abs(shift[1]) > 1e-6:
|
|
# 3. pad array with 0s before shifting
|
|
arr2a = zeros((arr2.shape[0]+2, arr2.shape[1]+2) + arr2.shape[2:], dtype=arr2.dtype)
|
|
arr2a[1:-1, 1:-1] = arr2
|
|
|
|
# 4. shift array and udpate transforms
|
|
arr3 = ndimage.shift(arr2a, shift + (0,)*(arr2.ndim-2), order=1)
|
|
roiDataTransform *= QtGui.QTransform().translate(1+shift[0], 1+shift[1])
|
|
else:
|
|
arr3 = arr2
|
|
|
|
|
|
### Extract needed region from rotated/shifted array
|
|
# 1. map ROI into current data space (round these values off--they should be exact integer values at this point)
|
|
roiBounds = roiDataTransform.mapRect(self.boundingRect())
|
|
#print self, roiBounds.height()
|
|
#import traceback
|
|
#traceback.print_stack()
|
|
|
|
roiBounds = QtCore.QRect(round(roiBounds.left()), round(roiBounds.top()), round(roiBounds.width()), round(roiBounds.height()))
|
|
|
|
#2. intersect ROI with data bounds
|
|
dataBounds = roiBounds.intersect(QtCore.QRect(0, 0, arr3.shape[0], arr3.shape[1]))
|
|
|
|
#3. Extract data from array
|
|
db = dataBounds
|
|
bounds = (
|
|
(db.left(), db.right()+1),
|
|
(db.top(), db.bottom()+1)
|
|
)
|
|
arr4 = arr3[bounds[0][0]:bounds[0][1], bounds[1][0]:bounds[1][1]]
|
|
|
|
### Create zero array in size of ROI
|
|
arr5 = zeros((roiBounds.width(), roiBounds.height()) + arr4.shape[2:], dtype=arr4.dtype)
|
|
|
|
## Fill array with ROI data
|
|
orig = Point(dataBounds.topLeft() - roiBounds.topLeft())
|
|
subArr = arr5[orig[0]:orig[0]+arr4.shape[0], orig[1]:orig[1]+arr4.shape[1]]
|
|
subArr[:] = arr4[:subArr.shape[0], :subArr.shape[1]]
|
|
|
|
|
|
## figure out the reverse transpose order
|
|
tr2 = array(tr1)
|
|
for i in range(0, len(tr2)):
|
|
tr2[tr1[i]] = i
|
|
tr2 = tuple(tr2)
|
|
|
|
## Untranspose array before returning
|
|
return arr5.transpose(tr2)
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
class Handle(QtGui.QGraphicsItem):
|
|
def __init__(self, radius, typ=None, pen=QtGui.QPen(QtGui.QColor(200, 200, 220)), parent=None):
|
|
#print " create item with parent", parent
|
|
self.bounds = QtCore.QRectF(-1e-10, -1e-10, 2e-10, 2e-10)
|
|
QtGui.QGraphicsItem.__init__(self, parent)
|
|
self.setFlag(self.ItemIgnoresTransformations)
|
|
self.setZValue(11)
|
|
self.roi = []
|
|
self.radius = radius
|
|
self.typ = typ
|
|
self.prepareGeometryChange()
|
|
self.pen = pen
|
|
self.pen.setWidth(0)
|
|
self.pen.setCosmetic(True)
|
|
if typ == 't':
|
|
self.sides = 4
|
|
self.startAng = pi/4
|
|
elif typ == 'f':
|
|
self.sides = 4
|
|
self.startAng = pi/4
|
|
elif typ == 's':
|
|
self.sides = 4
|
|
self.startAng = 0
|
|
elif typ == 'r':
|
|
self.sides = 12
|
|
self.startAng = 0
|
|
elif typ == 'sr':
|
|
self.sides = 12
|
|
self.startAng = 0
|
|
else:
|
|
self.sides = 4
|
|
self.startAng = pi/4
|
|
|
|
def connectROI(self, roi, i):
|
|
self.roi.append((roi, i))
|
|
|
|
def boundingRect(self):
|
|
return self.bounds
|
|
|
|
def mousePressEvent(self, ev):
|
|
#print "handle press"
|
|
if ev.button() != QtCore.Qt.LeftButton:
|
|
ev.ignore()
|
|
return
|
|
self.cursorOffset = self.scenePos() - ev.scenePos()
|
|
for r in self.roi:
|
|
r[0].pointPressEvent(r[1], ev)
|
|
#print " accepted."
|
|
ev.accept()
|
|
|
|
def mouseReleaseEvent(self, ev):
|
|
#print "release"
|
|
for r in self.roi:
|
|
r[0].pointReleaseEvent(r[1], ev)
|
|
|
|
def mouseMoveEvent(self, ev):
|
|
#print "handle mouseMove", ev.pos()
|
|
pos = ev.scenePos() + self.cursorOffset
|
|
self.movePoint(pos, ev.modifiers())
|
|
|
|
def movePoint(self, pos, modifiers=QtCore.Qt.KeyboardModifier()):
|
|
for r in self.roi:
|
|
if not r[0].checkPointMove(r[1], pos, modifiers):
|
|
return
|
|
#print "point moved; inform %d ROIs" % len(self.roi)
|
|
for r in self.roi:
|
|
r[0].movePoint(r[1], pos, modifiers)
|
|
|
|
def paint(self, p, opt, widget):
|
|
## determine rotation of transform
|
|
m = self.sceneTransform()
|
|
#mi = m.inverted()[0]
|
|
v = m.map(QtCore.QPointF(1, 0)) - m.map(QtCore.QPointF(0, 0))
|
|
va = arctan2(v.y(), v.x())
|
|
|
|
## Determine length of unit vector in painter's coords
|
|
#size = mi.map(Point(self.radius, self.radius)) - mi.map(Point(0, 0))
|
|
#size = (size.x()*size.x() + size.y() * size.y()) ** 0.5
|
|
size = self.radius
|
|
|
|
bounds = QtCore.QRectF(-size, -size, size*2, size*2)
|
|
if bounds != self.bounds:
|
|
self.bounds = bounds
|
|
self.prepareGeometryChange()
|
|
p.setRenderHints(p.Antialiasing, True)
|
|
p.setPen(self.pen)
|
|
ang = self.startAng + va
|
|
dt = 2*pi / self.sides
|
|
for i in range(0, self.sides):
|
|
x1 = size * cos(ang)
|
|
y1 = size * sin(ang)
|
|
x2 = size * cos(ang+dt)
|
|
y2 = size * sin(ang+dt)
|
|
ang += dt
|
|
p.drawLine(Point(x1, y1), Point(x2, y2))
|
|
|
|
|
|
|
|
|
|
|
|
class TestROI(ROI):
|
|
def __init__(self, pos, size, **args):
|
|
#QtGui.QGraphicsRectItem.__init__(self, pos[0], pos[1], size[0], size[1])
|
|
ROI.__init__(self, pos, size, **args)
|
|
#self.addTranslateHandle([0, 0])
|
|
self.addTranslateHandle([0.5, 0.5])
|
|
self.addScaleHandle([1, 1], [0, 0])
|
|
self.addScaleHandle([0, 0], [1, 1])
|
|
self.addScaleRotateHandle([1, 0.5], [0.5, 0.5])
|
|
self.addScaleHandle([0.5, 1], [0.5, 0.5])
|
|
self.addRotateHandle([1, 0], [0, 0])
|
|
self.addRotateHandle([0, 1], [1, 1])
|
|
|
|
|
|
|
|
class RectROI(ROI):
|
|
def __init__(self, pos, size, centered=False, sideScalers=False, **args):
|
|
#QtGui.QGraphicsRectItem.__init__(self, 0, 0, size[0], size[1])
|
|
ROI.__init__(self, pos, size, **args)
|
|
if centered:
|
|
center = [0.5, 0.5]
|
|
else:
|
|
center = [0, 0]
|
|
|
|
#self.addTranslateHandle(center)
|
|
self.addScaleHandle([1, 1], center)
|
|
if sideScalers:
|
|
self.addScaleHandle([1, 0.5], [center[0], 0.5])
|
|
self.addScaleHandle([0.5, 1], [0.5, center[1]])
|
|
|
|
class LineROI(ROI):
|
|
def __init__(self, pos1, pos2, width, **args):
|
|
pos1 = Point(pos1)
|
|
pos2 = Point(pos2)
|
|
d = pos2-pos1
|
|
l = d.length()
|
|
ang = Point(1, 0).angle(d)
|
|
c = Point(-width/2. * sin(ang), -width/2. * cos(ang))
|
|
pos1 = pos1 + c
|
|
|
|
ROI.__init__(self, pos1, size=Point(l, width), angle=ang*180/pi, **args)
|
|
self.addScaleRotateHandle([0, 0.5], [1, 0.5])
|
|
self.addScaleRotateHandle([1, 0.5], [0, 0.5])
|
|
self.addScaleHandle([0.5, 1], [0.5, 0.5])
|
|
|
|
|
|
class MultiLineROI(QtGui.QGraphicsItem, QObjectWorkaround):
|
|
def __init__(self, points, width, **args):
|
|
QObjectWorkaround.__init__(self)
|
|
QtGui.QGraphicsItem.__init__(self)
|
|
self.roiArgs = args
|
|
if len(points) < 2:
|
|
raise Exception("Must start with at least 2 points")
|
|
self.lines = []
|
|
self.lines.append(ROI([0, 0], [1, 5], parent=self))
|
|
self.lines[-1].addScaleHandle([0.5, 1], [0.5, 0.5])
|
|
h = self.lines[-1].addScaleRotateHandle([0, 0.5], [1, 0.5])
|
|
h.movePoint(points[0])
|
|
h.movePoint(points[0])
|
|
for i in range(1, len(points)):
|
|
h = self.lines[-1].addScaleRotateHandle([1, 0.5], [0, 0.5])
|
|
if i < len(points)-1:
|
|
self.lines.append(ROI([0, 0], [1, 5], parent=self))
|
|
self.lines[-1].addScaleRotateHandle([0, 0.5], [1, 0.5], item=h)
|
|
h.movePoint(points[i])
|
|
h.movePoint(points[i])
|
|
|
|
for l in self.lines:
|
|
l.translatable = False
|
|
#self.addToGroup(l)
|
|
l.connect(l, QtCore.SIGNAL('regionChanged'), self.roiChangedEvent)
|
|
l.connect(l, QtCore.SIGNAL('regionChangeStarted'), self.roiChangeStartedEvent)
|
|
l.connect(l, QtCore.SIGNAL('regionChangeFinished'), self.roiChangeFinishedEvent)
|
|
|
|
def paint(self, *args):
|
|
pass
|
|
|
|
def boundingRect(self):
|
|
return QtCore.QRectF()
|
|
|
|
def roiChangedEvent(self):
|
|
w = self.lines[0].state['size'][1]
|
|
for l in self.lines[1:]:
|
|
w0 = l.state['size'][1]
|
|
l.scale([1.0, w/w0], center=[0.5,0.5])
|
|
self.emit(QtCore.SIGNAL('regionChanged'), self)
|
|
|
|
def roiChangeStartedEvent(self):
|
|
self.emit(QtCore.SIGNAL('regionChangeStarted'), self)
|
|
|
|
def roiChangeFinishedEvent(self):
|
|
self.emit(QtCore.SIGNAL('regionChangeFinished'), self)
|
|
|
|
|
|
def getArrayRegion(self, arr, img=None):
|
|
rgns = []
|
|
for l in self.lines:
|
|
rgn = l.getArrayRegion(arr, img)
|
|
if rgn is None:
|
|
continue
|
|
#return None
|
|
rgns.append(rgn)
|
|
#print l.state['size']
|
|
#print [(r.shape) for r in rgns]
|
|
return vstack(rgns)
|
|
|
|
|
|
class EllipseROI(ROI):
|
|
def __init__(self, pos, size, **args):
|
|
#QtGui.QGraphicsRectItem.__init__(self, 0, 0, size[0], size[1])
|
|
ROI.__init__(self, pos, size, **args)
|
|
self.addRotateHandle([1.0, 0.5], [0.5, 0.5])
|
|
self.addScaleHandle([0.5*2.**-0.5 + 0.5, 0.5*2.**-0.5 + 0.5], [0.5, 0.5])
|
|
|
|
def paint(self, p, opt, widget):
|
|
r = self.boundingRect()
|
|
p.setRenderHint(QtGui.QPainter.Antialiasing)
|
|
p.setPen(self.pen)
|
|
|
|
p.scale(r.width(), r.height())## workaround for GL bug
|
|
r = QtCore.QRectF(r.x()/r.width(), r.y()/r.height(), 1,1)
|
|
|
|
p.drawEllipse(r)
|
|
|
|
def getArrayRegion(self, arr, img=None):
|
|
arr = ROI.getArrayRegion(self, arr, img)
|
|
if arr is None or arr.shape[0] == 0 or arr.shape[1] == 0:
|
|
return None
|
|
w = arr.shape[0]
|
|
h = arr.shape[1]
|
|
## generate an ellipsoidal mask
|
|
mask = fromfunction(lambda x,y: (((x+0.5)/(w/2.)-1)**2+ ((y+0.5)/(h/2.)-1)**2)**0.5 < 1, (w, h))
|
|
|
|
return arr * mask
|
|
|
|
def shape(self):
|
|
self.path = QtGui.QPainterPath()
|
|
self.path.addEllipse(self.boundingRect())
|
|
return self.path
|
|
|
|
|
|
class CircleROI(EllipseROI):
|
|
def __init__(self, pos, size, **args):
|
|
ROI.__init__(self, pos, size, **args)
|
|
self.aspectLocked = True
|
|
#self.addTranslateHandle([0.5, 0.5])
|
|
self.addScaleHandle([0.5*2.**-0.5 + 0.5, 0.5*2.**-0.5 + 0.5], [0.5, 0.5])
|
|
|
|
class PolygonROI(ROI):
|
|
def __init__(self, positions):
|
|
ROI.__init__(self, [0,0], [100,100])
|
|
for p in positions:
|
|
self.addFreeHandle(p)
|
|
|
|
def movePoint(self, *args, **kargs):
|
|
ROI.movePoint(self, *args, **kargs)
|
|
self.prepareGeometryChange()
|
|
|
|
def paint(self, p, *args):
|
|
p.setRenderHint(QtGui.QPainter.Antialiasing)
|
|
p.setPen(self.pen)
|
|
for i in range(len(self.handles)):
|
|
h1 = self.handles[i]['item'].pos()
|
|
h2 = self.handles[i-1]['item'].pos()
|
|
p.drawLine(h1, h2)
|
|
|
|
def boundingRect(self):
|
|
r = QtCore.QRectF()
|
|
for h in self.handles:
|
|
r |= self.mapFromItem(h['item'], h['item'].boundingRect()).boundingRect()
|
|
return r
|
|
|
|
def shape(self):
|
|
p = QtGui.QPainterPath()
|
|
p.moveTo(self.handles[0]['item'].pos())
|
|
for i in range(len(self.handles)):
|
|
p.lineTo(self.handles[i]['item'].pos())
|
|
return p
|
|
|