2ca08c69ce
- added vertical lines / regions for plots - added gradient editor widget - many bugfixes - cleaned up imageview a bit
2063 lines
72 KiB
Python
2063 lines
72 KiB
Python
# -*- coding: utf-8 -*-
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"""
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graphicsItems.py - Defines several graphics item classes for use in Qt graphics/view framework
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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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Provides ImageItem, PlotCurveItem, and ViewBox, amongst others.
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"""
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from PyQt4 import QtGui, QtCore
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from ObjectWorkaround import *
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#tryWorkaround(QtCore, QtGui)
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from numpy import *
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import scipy.weave as weave
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from scipy.weave import converters
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from scipy.fftpack import fft
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from scipy.signal import resample
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import scipy.stats
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#from metaarray import MetaArray
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from Point import *
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from functions import *
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import types, sys, struct
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import weakref
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#from debug import *
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## Should probably just use QGraphicsGroupItem and instruct it to pass events on to children..
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class ItemGroup(QtGui.QGraphicsItem):
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def __init__(self, *args):
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QtGui.QGraphicsItem.__init__(self, *args)
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if hasattr(self, "ItemHasNoContents"):
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self.setFlag(self.ItemHasNoContents)
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def boundingRect(self):
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return QtCore.QRectF()
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def paint(self, *args):
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pass
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def addItem(self, item):
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item.setParentItem(self)
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#if hasattr(QtGui, "QGraphicsObject"):
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#QGraphicsObject = QtGui.QGraphicsObject
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#else:
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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 connect(self, *args):
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#return QtCore.QObject.connect(self._qObj_, *args)
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#def disconnect(self, *args):
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#return QtCore.QObject.disconnect(self._qObj_, *args)
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#def emit(self, *args):
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#return QtCore.QObject.emit(self._qObj_, *args)
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#class QGraphicsObject(QtGui.QGraphicsItem, QObjectWorkaround):
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#def __init__(self, *args):
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#QtGui.QGraphicsItem.__init__(self, *args)
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#QObjectWorkaround.__init__(self)
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class GraphicsObject(QGraphicsObject):
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"""Extends QGraphicsObject with a few important functions.
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(Most of these assume that the object is in a scene with a single view)"""
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def __init__(self, *args):
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QGraphicsObject.__init__(self, *args)
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self._view = None
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def getViewWidget(self):
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"""Return the view widget for this item. If the scene has multiple views, only the first view is returned.
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the view is remembered for the lifetime of the object, so expect trouble if the object is moved to another view."""
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if self._view is None:
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scene = self.scene()
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if scene is None:
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return None
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views = scene.views()
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if len(views) < 1:
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return None
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self._view = weakref.ref(self.scene().views()[0])
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return self._view()
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def getBoundingParents(self):
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"""Return a list of parents to this item that have child clipping enabled."""
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p = self
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parents = []
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while True:
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p = p.parentItem()
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if p is None:
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break
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if p.flags() & self.ItemClipsChildrenToShape:
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parents.append(p)
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return parents
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def viewBounds(self):
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"""Return the allowed visible boundaries for this item. Takes into account the viewport as well as any parents that clip."""
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bounds = QtCore.QRectF(0, 0, 1, 1)
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view = self.getViewWidget()
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if view is None:
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return None
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bounds = self.mapRectFromScene(view.visibleRange())
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for p in self.getBoundingParents():
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bounds &= self.mapRectFromScene(p.sceneBoundingRect())
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return bounds
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def viewTransform(self):
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"""Return the transform that maps from local coordinates to the item's view coordinates"""
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view = self.getViewWidget()
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if view is None:
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return None
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return self.deviceTransform(view.viewportTransform())
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def pixelVectors(self):
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"""Return vectors in local coordinates representing the width and height of a view pixel."""
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vt = self.viewTransform()
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if vt is None:
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return None
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vt = vt.inverted()[0]
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orig = vt.map(QtCore.QPointF(0, 0))
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return vt.map(QtCore.QPointF(1, 0))-orig, vt.map(QtCore.QPointF(0, 1))-orig
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def pixelWidth(self):
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vt = self.viewTransform()
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if vt is None:
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return 0
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vt = vt.inverted()[0]
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return abs((vt.map(QtCore.QPointF(1, 0))-vt.map(QtCore.QPointF(0, 0))).x())
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def pixelHeight(self):
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vt = self.viewTransform()
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if vt is None:
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return 0
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vt = vt.inverted()[0]
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return abs((vt.map(QtCore.QPointF(0, 1))-vt.map(QtCore.QPointF(0, 0))).y())
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def mapToView(self, obj):
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vt = self.viewTransform()
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if vt is None:
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return None
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return vt.map(obj)
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def mapRectToView(self, obj):
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vt = self.viewTransform()
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if vt is None:
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return None
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return vt.mapRect(obj)
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def mapFromView(self, obj):
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vt = self.viewTransform()
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if vt is None:
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return None
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vt = vt.inverted()[0]
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return vt.map(obj)
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def mapRectFromView(self, obj):
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vt = self.viewTransform()
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if vt is None:
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return None
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vt = vt.inverted()[0]
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return vt.mapRect(obj)
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class ImageItem(QtGui.QGraphicsPixmapItem):
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useWeave = True
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def __init__(self, image=None, copy=True, parent=None, *args):
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self.qimage = QtGui.QImage()
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self.pixmap = None
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#self.useWeave = True
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self.blackLevel = None
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self.whiteLevel = None
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self.alpha = 1.0
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self.image = None
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self.clipLevel = None
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QtGui.QGraphicsPixmapItem.__init__(self, parent, *args)
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#self.pixmapItem = QtGui.QGraphicsPixmapItem(self)
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if image is not None:
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self.updateImage(image, copy, autoRange=True)
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#self.setCacheMode(QtGui.QGraphicsItem.DeviceCoordinateCache)
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def setAlpha(self, alpha):
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self.alpha = alpha
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self.updateImage()
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#def boundingRect(self):
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#return self.pixmapItem.boundingRect()
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#return QtCore.QRectF(0, 0, self.qimage.width(), self.qimage.height())
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def width(self):
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if self.pixmap is None:
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return None
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return self.pixmap.width()
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def height(self):
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if self.pixmap is None:
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return None
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return self.pixmap.height()
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def setClipLevel(self, level=None):
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self.clipLevel = level
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#def paint(self, p, opt, widget):
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#pass
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#if self.pixmap is not None:
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#p.drawPixmap(0, 0, self.pixmap)
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#print "paint"
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def setLevels(self, white=None, black=None):
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if white is not None:
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self.whiteLevel = white
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if black is not None:
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self.blackLevel = black
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self.updateImage()
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def updateImage(self, image=None, copy=True, autoRange=False, clipMask=None, white=None, black=None):
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axh = {'x': 0, 'y': 1, 'c': 2}
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#print "Update image", black, white
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if white is not None:
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self.whiteLevel = white
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if black is not None:
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self.blackLevel = black
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if image is None:
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if self.image is None:
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return
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else:
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if copy:
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self.image = image.copy()
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else:
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self.image = image
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#print " image max:", self.image.max(), "min:", self.image.min()
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# Determine scale factors
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if autoRange or self.blackLevel is None:
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self.blackLevel = self.image.min()
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self.whiteLevel = self.image.max()
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#print "Image item using", self.blackLevel, self.whiteLevel
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if self.blackLevel != self.whiteLevel:
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scale = 255. / (self.whiteLevel - self.blackLevel)
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else:
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scale = 0.
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## Recolor and convert to 8 bit per channel
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# Try using weave, then fall back to python
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shape = self.image.shape
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black = float(self.blackLevel)
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try:
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if not ImageItem.useWeave:
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raise Exception('Skipping weave compile')
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sim = ascontiguousarray(self.image)
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sim.shape = sim.size
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im = zeros(sim.shape, dtype=ubyte)
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n = im.size
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code = """
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for( int i=0; i<n; i++ ) {
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float a = (sim(i)-black) * (float)scale;
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if( a > 255.0 )
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a = 255.0;
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else if( a < 0.0 )
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a = 0.0;
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im(i) = a;
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}
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"""
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weave.inline(code, ['sim', 'im', 'n', 'black', 'scale'], type_converters=converters.blitz, compiler = 'gcc')
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sim.shape = shape
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im.shape = shape
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except:
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if ImageItem.useWeave:
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ImageItem.useWeave = False
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#sys.excepthook(*sys.exc_info())
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#print "=============================================================================="
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print "Weave compile failed, falling back to slower version."
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self.image.shape = shape
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im = ((self.image - black) * scale).clip(0.,255.).astype(ubyte)
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try:
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im1 = empty((im.shape[axh['y']], im.shape[axh['x']], 4), dtype=ubyte)
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except:
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print im.shape, axh
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raise
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alpha = clip(int(255 * self.alpha), 0, 255)
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# Fill image
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if im.ndim == 2:
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im2 = im.transpose(axh['y'], axh['x'])
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im1[..., 0] = im2
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im1[..., 1] = im2
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im1[..., 2] = im2
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im1[..., 3] = alpha
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elif im.ndim == 3:
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im2 = im.transpose(axh['y'], axh['x'], axh['c'])
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for i in range(0, im.shape[axh['c']]):
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im1[..., i] = im2[..., i]
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for i in range(im.shape[axh['c']], 3):
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im1[..., i] = 0
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if im.shape[axh['c']] < 4:
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im1[..., 3] = alpha
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else:
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raise Exception("Image must be 2 or 3 dimensions")
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#self.im1 = im1
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# Display image
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if self.clipLevel is not None or clipMask is not None:
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if clipMask is not None:
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mask = clipMask.transpose()
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else:
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mask = (self.image < self.clipLevel).transpose()
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im1[..., 0][mask] *= 0.5
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im1[..., 1][mask] *= 0.5
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im1[..., 2][mask] = 255
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#print "Final image:", im1.dtype, im1.min(), im1.max(), im1.shape
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self.ims = im1.tostring() ## Must be held in memory here because qImage won't do it for us :(
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qimage = QtGui.QImage(self.ims, im1.shape[1], im1.shape[0], QtGui.QImage.Format_ARGB32)
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self.pixmap = QtGui.QPixmap.fromImage(qimage)
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##del self.ims
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self.setPixmap(self.pixmap)
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self.update()
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def getPixmap(self):
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return self.pixmap.copy()
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class PlotCurveItem(GraphicsObject):
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"""Class representing a single plot curve."""
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def __init__(self, y=None, x=None, copy=False, pen=None, shadow=None, parent=None, color=None):
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GraphicsObject.__init__(self, parent)
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self.free()
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#self.dispPath = None
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if pen is None:
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if color is None:
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pen = QtGui.QPen(QtGui.QColor(200, 200, 200))
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else:
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pen = QtGui.QPen(color)
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self.pen = pen
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self.shadow = shadow
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if y is not None:
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self.updateData(y, x, copy)
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#self.setCacheMode(QtGui.QGraphicsItem.DeviceCoordinateCache)
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self.metaData = {}
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self.opts = {
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'spectrumMode': False,
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'logMode': [False, False],
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'pointMode': False,
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'pointStyle': None,
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'downsample': False,
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'alphaHint': 1.0,
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'alphaMode': False
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}
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#self.fps = None
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def getData(self):
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if self.xData is None:
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return (None, None)
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if self.xDisp is None:
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x = self.xData
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y = self.yData
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ds = self.opts['downsample']
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if ds > 1:
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x = x[::ds]
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y = resample(y[:len(x)*ds], len(x))
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if self.opts['spectrumMode']:
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f = fft(y) / len(y)
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y = abs(f[1:len(f)/2])
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dt = x[-1] - x[0]
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x = linspace(0, 0.5*len(x)/dt, len(y))
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if self.opts['logMode'][0]:
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x = log10(x)
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if self.opts['logMode'][1]:
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y = log10(y)
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self.xDisp = x
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self.yDisp = y
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#print self.yDisp.shape, self.yDisp.min(), self.yDisp.max()
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#print self.xDisp.shape, self.xDisp.min(), self.xDisp.max()
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return self.xDisp, self.yDisp
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#def generateSpecData(self):
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#f = fft(self.yData) / len(self.yData)
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#self.ySpec = abs(f[1:len(f)/2])
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#dt = self.xData[-1] - self.xData[0]
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#self.xSpec = linspace(0, 0.5*len(self.xData)/dt, len(self.ySpec))
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def getRange(self, ax, frac=1.0):
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#print "getRange", ax, frac
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(x, y) = self.getData()
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if x is None or len(x) == 0:
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return (0, 1)
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if ax == 0:
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d = x
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elif ax == 1:
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d = y
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if frac >= 1.0:
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return (d.min(), d.max())
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elif frac <= 0.0:
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raise Exception("Value for parameter 'frac' must be > 0. (got %s)" % str(frac))
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else:
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return (scipy.stats.scoreatpercentile(d, 50 - (frac * 50)), scipy.stats.scoreatpercentile(d, 50 + (frac * 50)))
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#bins = 1000
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#h = histogram(d, bins)
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#s = len(d) * (1.0-frac)
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#mnTot = mxTot = 0
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#mnInd = mxInd = 0
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#for i in range(bins):
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#mnTot += h[0][i]
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#if mnTot > s:
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#mnInd = i
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#break
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#for i in range(bins):
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#mxTot += h[0][-i-1]
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#if mxTot > s:
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#mxInd = -i-1
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#break
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##print mnInd, mxInd, h[1][mnInd], h[1][mxInd]
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#return(h[1][mnInd], h[1][mxInd])
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def setMeta(self, data):
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self.metaData = data
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def meta(self):
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return self.metaData
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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 setColor(self, color):
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self.pen.setColor(color)
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self.update()
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def setAlpha(self, alpha, auto):
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self.opts['alphaHint'] = alpha
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self.opts['alphaMode'] = auto
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self.update()
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def setSpectrumMode(self, mode):
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self.opts['spectrumMode'] = mode
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self.xDisp = self.yDisp = None
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self.path = None
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self.update()
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def setLogMode(self, mode):
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self.opts['logMode'] = mode
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self.xDisp = self.yDisp = None
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self.path = None
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self.update()
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def setPointMode(self, mode):
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self.opts['pointMode'] = mode
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self.update()
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def setShadowPen(self, pen):
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self.shadow = pen
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self.update()
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def setDownsampling(self, ds):
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if self.opts['downsample'] != ds:
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self.opts['downsample'] = ds
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self.xDisp = self.yDisp = None
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self.path = None
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self.update()
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def setData(self, x, y, copy=False):
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"""For Qwt compatibility"""
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self.updateData(y, x, copy)
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def updateData(self, data, x=None, copy=False):
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if isinstance(data, list):
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data = array(data)
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if isinstance(x, list):
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x = array(x)
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if not isinstance(data, ndarray) or data.ndim > 2:
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raise Exception("Plot data must be 1 or 2D ndarray (data shape is %s)" % str(data.shape))
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if data.ndim == 2: ### If data is 2D array, then assume x and y values are in first two columns or rows.
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if x is not None:
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raise Exception("Plot data may be 2D only if no x argument is supplied.")
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ax = 0
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if data.shape[0] > 2 and data.shape[1] == 2:
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ax = 1
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ind = [slice(None), slice(None)]
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ind[ax] = 0
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y = data[tuple(ind)]
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ind[ax] = 1
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x = data[tuple(ind)]
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elif data.ndim == 1:
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y = data
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if x.shape != y.shape:
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raise Exception("X and Y arrays must be the same shape--got %s and %s." % (str(x.shape), str(y.shape)))
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self.prepareGeometryChange()
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if copy:
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self.yData = y.copy()
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else:
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self.yData = y
|
|
|
|
if copy and x is not None:
|
|
self.xData = x.copy()
|
|
else:
|
|
self.xData = x
|
|
|
|
if x is None:
|
|
self.xData = arange(0, self.y.shape[0])
|
|
|
|
self.path = None
|
|
#self.specPath = None
|
|
self.xDisp = self.yDisp = None
|
|
self.update()
|
|
self.emit(QtCore.SIGNAL('plotChanged'), self)
|
|
|
|
def generatePath(self, x, y):
|
|
path = QtGui.QPainterPath()
|
|
|
|
## Create all vertices in path. The method used below creates a binary format so that all
|
|
## vertices can be read in at once. This binary format may change in future versions of Qt,
|
|
## so the original (slower) method is left here for emergencies:
|
|
#self.path.moveTo(x[0], y[0])
|
|
#for i in range(1, y.shape[0]):
|
|
#self.path.lineTo(x[i], y[i])
|
|
|
|
## Speed this up using >> operator
|
|
## Format is:
|
|
## numVerts(i4) 0(i4)
|
|
## x(f8) y(f8) 0(i4) <-- 0 means this vertex does not connect
|
|
## x(f8) y(f8) 1(i4) <-- 1 means this vertex connects to the previous vertex
|
|
## ...
|
|
## 0(i4)
|
|
##
|
|
## All values are big endian--pack using struct.pack('>d') or struct.pack('>i')
|
|
#
|
|
n = x.shape[0]
|
|
# create empty array, pad with extra space on either end
|
|
arr = empty(n+2, dtype=[('x', '>f8'), ('y', '>f8'), ('c', '>i4')])
|
|
# write first two integers
|
|
arr.data[12:20] = struct.pack('>ii', n, 0)
|
|
# Fill array with vertex values
|
|
arr[1:-1]['x'] = x
|
|
arr[1:-1]['y'] = y
|
|
arr[1:-1]['c'] = 1
|
|
# write last 0
|
|
lastInd = 20*(n+1)
|
|
arr.data[lastInd:lastInd+4] = struct.pack('>i', 0)
|
|
|
|
# create datastream object and stream into path
|
|
buf = QtCore.QByteArray(arr.data[12:lastInd+4]) # I think one unnecessary copy happens here
|
|
ds = QtCore.QDataStream(buf)
|
|
ds >> path
|
|
|
|
return path
|
|
|
|
def boundingRect(self):
|
|
(x, y) = self.getData()
|
|
if x is None or y is None or len(x) == 0 or len(y) == 0:
|
|
return QtCore.QRectF()
|
|
|
|
|
|
if self.shadow is not None:
|
|
lineWidth = (max(self.pen.width(), self.shadow.width()) + 1)
|
|
else:
|
|
lineWidth = (self.pen.width()+1)
|
|
|
|
|
|
pixels = self.pixelVectors()
|
|
xmin = x.min() - pixels[0].x() * lineWidth
|
|
xmax = x.max() + pixels[0].x() * lineWidth
|
|
ymin = y.min() - abs(pixels[1].y()) * lineWidth
|
|
ymax = y.max() + abs(pixels[1].y()) * lineWidth
|
|
return QtCore.QRectF(xmin, ymin, xmax-xmin, ymax-ymin)
|
|
|
|
def paint(self, p, opt, widget):
|
|
if self.xData is None:
|
|
return
|
|
#if self.opts['spectrumMode']:
|
|
#if self.specPath is None:
|
|
|
|
#self.specPath = self.generatePath(*self.getData())
|
|
#path = self.specPath
|
|
#else:
|
|
if self.path is None:
|
|
self.path = self.generatePath(*self.getData())
|
|
path = self.path
|
|
|
|
if self.shadow is not None:
|
|
sp = QtGui.QPen(self.shadow)
|
|
else:
|
|
sp = None
|
|
|
|
## Copy pens and apply alpha adjustment
|
|
cp = QtGui.QPen(self.pen)
|
|
for pen in [sp, cp]:
|
|
if pen is None:
|
|
continue
|
|
c = pen.color()
|
|
c.setAlpha(c.alpha() * self.opts['alphaHint'])
|
|
pen.setColor(c)
|
|
#pen.setCosmetic(True)
|
|
|
|
if self.shadow is not None:
|
|
p.setPen(sp)
|
|
p.drawPath(path)
|
|
p.setPen(cp)
|
|
p.drawPath(path)
|
|
|
|
#p.setPen(QtGui.QPen(QtGui.QColor(255,0,0)))
|
|
#p.drawRect(self.boundingRect())
|
|
|
|
|
|
def free(self):
|
|
self.xData = None ## raw values
|
|
self.yData = None
|
|
self.xDisp = None ## display values (after log / fft)
|
|
self.yDisp = None
|
|
self.path = None
|
|
#del self.xData, self.yData, self.xDisp, self.yDisp, self.path
|
|
|
|
|
|
class ROIPlotItem(PlotCurveItem):
|
|
def __init__(self, roi, data, img, axes=(0,1), xVals=None, color=None):
|
|
self.roi = roi
|
|
self.roiData = data
|
|
self.roiImg = img
|
|
self.axes = axes
|
|
self.xVals = xVals
|
|
PlotCurveItem.__init__(self, self.getRoiData(), x=self.xVals, color=color)
|
|
roi.connect(QtCore.SIGNAL('regionChanged'), self.roiChangedEvent)
|
|
#self.roiChangedEvent()
|
|
|
|
def getRoiData(self):
|
|
d = self.roi.getArrayRegion(self.roiData, self.roiImg, axes=self.axes)
|
|
if d is None:
|
|
return
|
|
while d.ndim > 1:
|
|
d = d.mean(axis=1)
|
|
return d
|
|
|
|
def roiChangedEvent(self):
|
|
d = self.getRoiData()
|
|
self.updateData(d, self.xVals)
|
|
|
|
|
|
|
|
|
|
class UIGraphicsItem(GraphicsObject):
|
|
"""Base class for graphics items with boundaries relative to a GraphicsView widget"""
|
|
def __init__(self, view, bounds=None):
|
|
GraphicsObject.__init__(self)
|
|
self._view = weakref.ref(view)
|
|
if bounds is None:
|
|
self._bounds = QtCore.QRectF(0, 0, 1, 1)
|
|
else:
|
|
self._bounds = bounds
|
|
self._viewRect = self._view().rect()
|
|
self._viewTransform = self.viewTransform()
|
|
self.setNewBounds()
|
|
QtCore.QObject.connect(view, QtCore.SIGNAL('viewChanged'), self.viewChangedEvent)
|
|
|
|
def viewRect(self):
|
|
"""Return the viewport widget rect"""
|
|
return self._view().rect()
|
|
|
|
def viewTransform(self):
|
|
"""Returns a matrix that maps viewport coordinates onto scene coordinates"""
|
|
if self._view() is None:
|
|
return QtGui.QTransform()
|
|
else:
|
|
return self._view().viewportTransform()
|
|
|
|
def boundingRect(self):
|
|
if self._view() is None:
|
|
self.bounds = self._bounds
|
|
else:
|
|
vr = self._view().rect()
|
|
tr = self.viewTransform()
|
|
if vr != self._viewRect or tr != self._viewTransform:
|
|
#self.viewChangedEvent(vr, self._viewRect)
|
|
self._viewRect = vr
|
|
self._viewTransform = tr
|
|
self.setNewBounds()
|
|
#print "viewRect", self._viewRect.x(), self._viewRect.y(), self._viewRect.width(), self._viewRect.height()
|
|
#print "bounds", self.bounds.x(), self.bounds.y(), self.bounds.width(), self.bounds.height()
|
|
return self.bounds
|
|
|
|
def setNewBounds(self):
|
|
bounds = QtCore.QRectF(
|
|
QtCore.QPointF(self._bounds.left()*self._viewRect.width(), self._bounds.top()*self._viewRect.height()),
|
|
QtCore.QPointF(self._bounds.right()*self._viewRect.width(), self._bounds.bottom()*self._viewRect.height())
|
|
)
|
|
bounds.adjust(0.5, 0.5, 0.5, 0.5)
|
|
self.bounds = self.viewTransform().inverted()[0].mapRect(bounds)
|
|
self.prepareGeometryChange()
|
|
|
|
def viewChangedEvent(self):
|
|
"""Called when the view widget is resized"""
|
|
self.boundingRect()
|
|
self.update()
|
|
|
|
def unitRect(self):
|
|
return self.viewTransform().inverted()[0].mapRect(QtCore.QRectF(0, 0, 1, 1))
|
|
|
|
def paint(self, *args):
|
|
pass
|
|
|
|
|
|
|
|
|
|
class LabelItem(QtGui.QGraphicsWidget):
|
|
def __init__(self, text, parent=None, **args):
|
|
QtGui.QGraphicsWidget.__init__(self, parent)
|
|
self.item = QtGui.QGraphicsTextItem(self)
|
|
self.opts = args
|
|
if 'color' not in args:
|
|
self.opts['color'] = 'CCC'
|
|
else:
|
|
if isinstance(args['color'], QtGui.QColor):
|
|
self.opts['color'] = colorStr(args['color'])[:6]
|
|
self.sizeHint = {}
|
|
self.setText(text)
|
|
|
|
|
|
def setAttr(self, attr, value):
|
|
"""Set default text properties. See setText() for accepted parameters."""
|
|
self.opts[attr] = value
|
|
|
|
def setText(self, text, **args):
|
|
"""Set the text and text properties in the label. Accepts optional arguments for auto-generating
|
|
a CSS style string:
|
|
color: string (example: 'CCFF00')
|
|
size: string (example: '8pt')
|
|
bold: boolean
|
|
italic: boolean
|
|
"""
|
|
self.text = text
|
|
opts = self.opts.copy()
|
|
for k in args:
|
|
opts[k] = args[k]
|
|
|
|
optlist = []
|
|
if 'color' in opts:
|
|
optlist.append('color: #' + opts['color'])
|
|
if 'size' in opts:
|
|
optlist.append('font-size: ' + opts['size'])
|
|
if 'bold' in opts and opts['bold'] in [True, False]:
|
|
optlist.append('font-weight: ' + {True:'bold', False:'normal'}[opts['bold']])
|
|
if 'italic' in opts and opts['italic'] in [True, False]:
|
|
optlist.append('font-style: ' + {True:'italic', False:'normal'}[opts['italic']])
|
|
full = "<span style='%s'>%s</span>" % ('; '.join(optlist), text)
|
|
#print full
|
|
self.item.setHtml(full)
|
|
self.updateMin()
|
|
|
|
def resizeEvent(self, ev):
|
|
c1 = self.boundingRect().center()
|
|
c2 = self.item.mapToParent(self.item.boundingRect().center()) # + self.item.pos()
|
|
dif = c1 - c2
|
|
self.item.moveBy(dif.x(), dif.y())
|
|
#print c1, c2, dif, self.item.pos()
|
|
|
|
def setAngle(self, angle):
|
|
self.angle = angle
|
|
self.item.resetMatrix()
|
|
self.item.rotate(angle)
|
|
self.updateMin()
|
|
|
|
def updateMin(self):
|
|
bounds = self.item.mapRectToParent(self.item.boundingRect())
|
|
self.setMinimumWidth(bounds.width())
|
|
self.setMinimumHeight(bounds.height())
|
|
#print self.text, bounds.width(), bounds.height()
|
|
|
|
#self.sizeHint = {
|
|
#QtCore.Qt.MinimumSize: (bounds.width(), bounds.height()),
|
|
#QtCore.Qt.PreferredSize: (bounds.width(), bounds.height()),
|
|
#QtCore.Qt.MaximumSize: (bounds.width()*2, bounds.height()*2),
|
|
#QtCore.Qt.MinimumDescent: (0, 0) ##?? what is this?
|
|
#}
|
|
|
|
|
|
#def sizeHint(self, hint, constraint):
|
|
#return self.sizeHint[hint]
|
|
|
|
|
|
|
|
|
|
|
|
class ScaleItem(QtGui.QGraphicsWidget):
|
|
def __init__(self, orientation, pen=None, linkView=None, parent=None):
|
|
"""GraphicsItem showing a single plot axis with ticks, values, and label.
|
|
Can be configured to fit on any side of a plot, and can automatically synchronize its displayed scale with ViewBox items.
|
|
Ticks can be extended to make a grid."""
|
|
QtGui.QGraphicsWidget.__init__(self, parent)
|
|
self.label = QtGui.QGraphicsTextItem(self)
|
|
self.orientation = orientation
|
|
if orientation not in ['left', 'right', 'top', 'bottom']:
|
|
raise Exception("Orientation argument must be one of 'left', 'right', 'top', or 'bottom'.")
|
|
if orientation in ['left', 'right']:
|
|
#self.setMinimumWidth(25)
|
|
#self.setSizePolicy(QtGui.QSizePolicy(
|
|
#QtGui.QSizePolicy.Minimum,
|
|
#QtGui.QSizePolicy.Expanding
|
|
#))
|
|
self.label.rotate(-90)
|
|
#else:
|
|
#self.setMinimumHeight(50)
|
|
#self.setSizePolicy(QtGui.QSizePolicy(
|
|
#QtGui.QSizePolicy.Expanding,
|
|
#QtGui.QSizePolicy.Minimum
|
|
#))
|
|
#self.drawLabel = False
|
|
|
|
self.labelText = ''
|
|
self.labelUnits = ''
|
|
self.labelUnitPrefix=''
|
|
self.labelStyle = {'color': '#CCC'}
|
|
|
|
self.textHeight = 18
|
|
self.tickLength = 10
|
|
self.scale = 1.0
|
|
self.autoScale = True
|
|
|
|
self.setRange(0, 1)
|
|
|
|
if pen is None:
|
|
pen = QtGui.QPen(QtGui.QColor(100, 100, 100))
|
|
self.setPen(pen)
|
|
|
|
self.linkedView = None
|
|
if linkView is not None:
|
|
self.linkToView(linkView)
|
|
|
|
self.showLabel(False)
|
|
|
|
self.grid = False
|
|
|
|
|
|
def setGrid(self, grid):
|
|
"""Set the alpha value for the grid, or False to disable."""
|
|
self.grid = grid
|
|
self.update()
|
|
|
|
|
|
def resizeEvent(self, ev=None):
|
|
#s = self.size()
|
|
|
|
## Set the position of the label
|
|
nudge = 5
|
|
br = self.label.boundingRect()
|
|
p = QtCore.QPointF(0, 0)
|
|
if self.orientation == 'left':
|
|
p.setY(int(self.size().height()/2 + br.width()/2))
|
|
p.setX(-nudge)
|
|
#s.setWidth(10)
|
|
elif self.orientation == 'right':
|
|
#s.setWidth(10)
|
|
p.setY(int(self.size().height()/2 + br.width()/2))
|
|
p.setX(int(self.size().width()-br.height()+nudge))
|
|
elif self.orientation == 'top':
|
|
#s.setHeight(10)
|
|
p.setY(-nudge)
|
|
p.setX(int(self.size().width()/2. - br.width()/2.))
|
|
elif self.orientation == 'bottom':
|
|
p.setX(int(self.size().width()/2. - br.width()/2.))
|
|
#s.setHeight(10)
|
|
p.setY(int(self.size().height()-br.height()+nudge))
|
|
#self.label.resize(s)
|
|
self.label.setPos(p)
|
|
|
|
def showLabel(self, show=True):
|
|
#self.drawLabel = show
|
|
self.label.setVisible(show)
|
|
if self.orientation in ['left', 'right']:
|
|
self.setWidth()
|
|
else:
|
|
self.setHeight()
|
|
if self.autoScale:
|
|
self.setScale()
|
|
|
|
def setLabel(self, text=None, units=None, unitPrefix=None, **args):
|
|
if text is not None:
|
|
self.labelText = text
|
|
self.showLabel()
|
|
if units is not None:
|
|
self.labelUnits = units
|
|
self.showLabel()
|
|
if unitPrefix is not None:
|
|
self.labelUnitPrefix = unitPrefix
|
|
if len(args) > 0:
|
|
self.labelStyle = args
|
|
self.label.setHtml(self.labelString())
|
|
self.resizeEvent()
|
|
self.update()
|
|
|
|
def labelString(self):
|
|
if self.labelUnits == '':
|
|
if self.scale == 1.0:
|
|
units = ''
|
|
else:
|
|
units = u'(x%g)' % (1.0/self.scale)
|
|
else:
|
|
#print repr(self.labelUnitPrefix), repr(self.labelUnits)
|
|
units = u'(%s%s)' % (self.labelUnitPrefix, self.labelUnits)
|
|
|
|
s = u'%s %s' % (self.labelText, units)
|
|
|
|
style = ';'.join(['%s: "%s"' % (k, self.labelStyle[k]) for k in self.labelStyle])
|
|
|
|
return u"<span style='%s'>%s</span>" % (style, s)
|
|
|
|
def setHeight(self, h=None):
|
|
if h is None:
|
|
h = self.textHeight + self.tickLength
|
|
if self.label.isVisible():
|
|
h += self.textHeight
|
|
self.setMaximumHeight(h)
|
|
self.setMinimumHeight(h)
|
|
|
|
|
|
def setWidth(self, w=None):
|
|
if w is None:
|
|
w = self.tickLength + 40
|
|
if self.label.isVisible():
|
|
w += self.textHeight
|
|
self.setMaximumWidth(w)
|
|
self.setMinimumWidth(w)
|
|
|
|
def setPen(self, pen):
|
|
self.pen = pen
|
|
self.update()
|
|
|
|
def setScale(self, scale=None):
|
|
if scale is None:
|
|
#if self.drawLabel: ## If there is a label, then we are free to rescale the values
|
|
if self.label.isVisible():
|
|
d = self.range[1] - self.range[0]
|
|
#pl = 1-int(log10(d))
|
|
#scale = 10 ** pl
|
|
(scale, prefix) = siScale(d / 2.)
|
|
if self.labelUnits == '' and prefix in ['k', 'm']: ## If we are not showing units, wait until 1e6 before scaling.
|
|
scale = 1.0
|
|
prefix = ''
|
|
self.setLabel(unitPrefix=prefix)
|
|
else:
|
|
scale = 1.0
|
|
|
|
|
|
if scale != self.scale:
|
|
self.scale = scale
|
|
self.setLabel()
|
|
self.update()
|
|
|
|
def setRange(self, mn, mx):
|
|
if mn in [nan, inf, -inf] or mx in [nan, inf, -inf]:
|
|
raise Exception("Not setting range to [%s, %s]" % (str(mn), str(mx)))
|
|
self.range = [mn, mx]
|
|
if self.autoScale:
|
|
self.setScale()
|
|
self.update()
|
|
|
|
def linkToView(self, view):
|
|
if self.orientation in ['right', 'left']:
|
|
signal = QtCore.SIGNAL('yRangeChanged')
|
|
else:
|
|
signal = QtCore.SIGNAL('xRangeChanged')
|
|
|
|
if self.linkedView is not None:
|
|
QtCore.QObject.disconnect(view, signal, self.linkedViewChanged)
|
|
self.linkedView = view
|
|
QtCore.QObject.connect(view, signal, self.linkedViewChanged)
|
|
|
|
def linkedViewChanged(self, _, newRange):
|
|
self.setRange(*newRange)
|
|
|
|
def boundingRect(self):
|
|
if self.linkedView is None or self.grid is False:
|
|
return self.mapRectFromParent(self.geometry())
|
|
else:
|
|
return self.mapRectFromParent(self.geometry()) | self.mapRectFromScene(self.linkedView.mapRectToScene(self.linkedView.boundingRect()))
|
|
|
|
def paint(self, p, opt, widget):
|
|
p.setPen(self.pen)
|
|
|
|
#bounds = self.boundingRect()
|
|
bounds = self.mapRectFromParent(self.geometry())
|
|
|
|
if self.linkedView is None or self.grid is False:
|
|
tbounds = bounds
|
|
else:
|
|
tbounds = self.mapRectFromScene(self.linkedView.mapRectToScene(self.linkedView.boundingRect()))
|
|
|
|
if self.orientation == 'left':
|
|
p.drawLine(bounds.topRight(), bounds.bottomRight())
|
|
tickStart = tbounds.right()
|
|
tickStop = bounds.right()
|
|
tickDir = -1
|
|
axis = 0
|
|
elif self.orientation == 'right':
|
|
p.drawLine(bounds.topLeft(), bounds.bottomLeft())
|
|
tickStart = tbounds.left()
|
|
tickStop = bounds.left()
|
|
tickDir = 1
|
|
axis = 0
|
|
elif self.orientation == 'top':
|
|
p.drawLine(bounds.bottomLeft(), bounds.bottomRight())
|
|
tickStart = tbounds.bottom()
|
|
tickStop = bounds.bottom()
|
|
tickDir = -1
|
|
axis = 1
|
|
elif self.orientation == 'bottom':
|
|
p.drawLine(bounds.topLeft(), bounds.topRight())
|
|
tickStart = tbounds.top()
|
|
tickStop = bounds.top()
|
|
tickDir = 1
|
|
axis = 1
|
|
|
|
## Determine optimal tick spacing
|
|
#intervals = [1., 2., 5., 10., 20., 50.]
|
|
#intervals = [1., 2.5, 5., 10., 25., 50.]
|
|
intervals = [1., 2., 10., 20., 100.]
|
|
dif = abs(self.range[1] - self.range[0])
|
|
if dif == 0.0:
|
|
return
|
|
#print "dif:", dif
|
|
pw = 10 ** (floor(log10(dif))-1)
|
|
for i in range(len(intervals)):
|
|
i1 = i
|
|
if dif / (pw*intervals[i]) < 10:
|
|
break
|
|
|
|
textLevel = i1 ## draw text at this scale level
|
|
|
|
#print "range: %s dif: %f power: %f interval: %f spacing: %f" % (str(self.range), dif, pw, intervals[i1], sp)
|
|
|
|
#print " start at %f, %d ticks" % (start, num)
|
|
|
|
|
|
if axis == 0:
|
|
xs = -bounds.height() / dif
|
|
else:
|
|
xs = bounds.width() / dif
|
|
|
|
## draw ticks and text
|
|
for i in [i1, i1+1, i1+2]: ## draw three different intervals
|
|
if i > len(intervals):
|
|
continue
|
|
## spacing for this interval
|
|
sp = pw*intervals[i]
|
|
|
|
## determine starting tick
|
|
start = ceil(self.range[0] / sp) * sp
|
|
|
|
## determine number of ticks
|
|
num = int(dif / sp) + 1
|
|
|
|
## last tick value
|
|
last = start + sp * num
|
|
|
|
## Number of decimal places to print
|
|
maxVal = max(abs(start), abs(last))
|
|
places = max(0, 1-int(log10(sp*self.scale)))
|
|
|
|
## length of tick
|
|
h = min(self.tickLength, (self.tickLength*3 / num) - 1.)
|
|
|
|
## alpha
|
|
a = min(255, (765. / num) - 1.)
|
|
|
|
if axis == 0:
|
|
offset = self.range[0] * xs - bounds.height()
|
|
else:
|
|
offset = self.range[0] * xs
|
|
|
|
for j in range(num):
|
|
v = start + sp * j
|
|
x = (v * xs) - offset
|
|
p1 = [0, 0]
|
|
p2 = [0, 0]
|
|
p1[axis] = tickStart
|
|
p2[axis] = tickStop + h*tickDir
|
|
p1[1-axis] = p2[1-axis] = x
|
|
|
|
if p1[1-axis] > [bounds.width(), bounds.height()][1-axis]:
|
|
continue
|
|
if p1[1-axis] < 0:
|
|
continue
|
|
p.setPen(QtGui.QPen(QtGui.QColor(100, 100, 100, a)))
|
|
p.drawLine(Point(p1), Point(p2))
|
|
if i == textLevel:
|
|
if abs(v) < .001 or abs(v) >= 10000:
|
|
vstr = "%g" % (v * self.scale)
|
|
else:
|
|
vstr = ("%%0.%df" % places) % (v * self.scale)
|
|
|
|
textRect = p.boundingRect(QtCore.QRectF(0, 0, 100, 100), QtCore.Qt.AlignCenter, vstr)
|
|
height = textRect.height()
|
|
self.textHeight = height
|
|
if self.orientation == 'left':
|
|
textFlags = QtCore.Qt.AlignRight|QtCore.Qt.AlignVCenter
|
|
rect = QtCore.QRectF(tickStop-100, x-(height/2), 100-self.tickLength, height)
|
|
elif self.orientation == 'right':
|
|
textFlags = QtCore.Qt.AlignLeft|QtCore.Qt.AlignVCenter
|
|
rect = QtCore.QRectF(tickStop+self.tickLength, x-(height/2), 100-self.tickLength, height)
|
|
elif self.orientation == 'top':
|
|
textFlags = QtCore.Qt.AlignCenter|QtCore.Qt.AlignBottom
|
|
rect = QtCore.QRectF(x-100, tickStop-self.tickLength-height, 200, height)
|
|
elif self.orientation == 'bottom':
|
|
textFlags = QtCore.Qt.AlignCenter|QtCore.Qt.AlignTop
|
|
rect = QtCore.QRectF(x-100, tickStop+self.tickLength, 200, height)
|
|
|
|
p.setPen(QtGui.QPen(QtGui.QColor(100, 100, 100)))
|
|
p.drawText(rect, textFlags, vstr)
|
|
#p.drawRect(rect)
|
|
|
|
## Draw label
|
|
#if self.drawLabel:
|
|
#height = self.size().height()
|
|
#width = self.size().width()
|
|
#if self.orientation == 'left':
|
|
#p.translate(0, height)
|
|
#p.rotate(-90)
|
|
#rect = QtCore.QRectF(0, 0, height, self.textHeight)
|
|
#textFlags = QtCore.Qt.AlignCenter|QtCore.Qt.AlignTop
|
|
#elif self.orientation == 'right':
|
|
#p.rotate(10)
|
|
#rect = QtCore.QRectF(0, 0, height, width)
|
|
#textFlags = QtCore.Qt.AlignCenter|QtCore.Qt.AlignBottom
|
|
##rect = QtCore.QRectF(tickStart+self.tickLength, x-(height/2), 100-self.tickLength, height)
|
|
#elif self.orientation == 'top':
|
|
#rect = QtCore.QRectF(0, 0, width, height)
|
|
#textFlags = QtCore.Qt.AlignCenter|QtCore.Qt.AlignTop
|
|
##rect = QtCore.QRectF(x-100, tickStart-self.tickLength-height, 200, height)
|
|
#elif self.orientation == 'bottom':
|
|
#rect = QtCore.QRectF(0, 0, width, height)
|
|
#textFlags = QtCore.Qt.AlignCenter|QtCore.Qt.AlignBottom
|
|
##rect = QtCore.QRectF(x-100, tickStart+self.tickLength, 200, height)
|
|
#p.drawText(rect, textFlags, self.labelString())
|
|
##p.drawRect(rect)
|
|
|
|
def show(self):
|
|
|
|
if self.orientation in ['left', 'right']:
|
|
self.setWidth()
|
|
else:
|
|
self.setHeight()
|
|
QtGui.QGraphicsWidget.show(self)
|
|
|
|
def hide(self):
|
|
if self.orientation in ['left', 'right']:
|
|
self.setWidth(0)
|
|
else:
|
|
self.setHeight(0)
|
|
QtGui.QGraphicsWidget.hide(self)
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
class ViewBox(QtGui.QGraphicsWidget):
|
|
"""Box that allows internal scaling/panning of children by mouse drag. Not compatible with GraphicsView having the same functionality."""
|
|
def __init__(self, parent=None):
|
|
QtGui.QGraphicsWidget.__init__(self, parent)
|
|
#self.gView = view
|
|
#self.showGrid = showGrid
|
|
self.range = [[0,1], [0,1]] ## child coord. range visible [[xmin, xmax], [ymin, ymax]]
|
|
|
|
self.aspectLocked = False
|
|
self.setFlag(QtGui.QGraphicsItem.ItemClipsChildrenToShape)
|
|
#self.setFlag(QtGui.QGraphicsItem.ItemClipsToShape)
|
|
|
|
#self.childGroup = QtGui.QGraphicsItemGroup(self)
|
|
self.childGroup = ItemGroup(self)
|
|
self.currentScale = Point(1, 1)
|
|
|
|
self.yInverted = False
|
|
#self.invertY()
|
|
self.setZValue(-100)
|
|
#self.picture = None
|
|
self.setSizePolicy(QtGui.QSizePolicy(QtGui.QSizePolicy.Expanding, QtGui.QSizePolicy.Expanding))
|
|
|
|
self.drawFrame = True
|
|
|
|
self.mouseEnabled = [True, True]
|
|
|
|
def setMouseEnabled(self, x, y):
|
|
self.mouseEnabled = [x, y]
|
|
|
|
def addItem(self, item):
|
|
if item.zValue() < self.zValue():
|
|
item.setZValue(self.zValue()+1)
|
|
item.setParentItem(self.childGroup)
|
|
#print "addItem:", item, item.boundingRect()
|
|
|
|
def removeItem(self, item):
|
|
self.scene().removeItem(item)
|
|
|
|
def resizeEvent(self, ev):
|
|
#self.setRange(self.range, padding=0)
|
|
self.updateMatrix()
|
|
|
|
|
|
def viewRect(self):
|
|
try:
|
|
return QtCore.QRectF(self.range[0][0], self.range[1][0], self.range[0][1]-self.range[0][0], self.range[1][1] - self.range[1][0])
|
|
except:
|
|
print "make qrectf failed:", self.range
|
|
raise
|
|
|
|
def updateMatrix(self):
|
|
#print "udpateMatrix:"
|
|
#print " range:", self.range
|
|
vr = self.viewRect()
|
|
translate = Point(vr.center())
|
|
bounds = self.boundingRect()
|
|
#print " bounds:", bounds
|
|
if vr.height() == 0 or vr.width() == 0:
|
|
return
|
|
scale = Point(bounds.width()/vr.width(), bounds.height()/vr.height())
|
|
#print " scale:", scale
|
|
m = QtGui.QMatrix()
|
|
|
|
## First center the viewport at 0
|
|
self.childGroup.resetMatrix()
|
|
center = self.transform().inverted()[0].map(bounds.center())
|
|
#print " transform to center:", center
|
|
if self.yInverted:
|
|
m.translate(center.x(), -center.y())
|
|
#print " inverted; translate", center.x(), center.y()
|
|
else:
|
|
m.translate(center.x(), center.y())
|
|
#print " not inverted; translate", center.x(), -center.y()
|
|
|
|
## Now scale and translate properly
|
|
if self.aspectLocked:
|
|
scale = Point(scale.min())
|
|
if not self.yInverted:
|
|
scale = scale * Point(1, -1)
|
|
m.scale(scale[0], scale[1])
|
|
#print " scale:", scale
|
|
st = translate
|
|
m.translate(-st[0], -st[1])
|
|
#print " translate:", st
|
|
self.childGroup.setMatrix(m)
|
|
self.currentScale = scale
|
|
|
|
def invertY(self, b=True):
|
|
self.yInverted = b
|
|
self.updateMatrix()
|
|
|
|
def childTransform(self):
|
|
m = self.childGroup.transform()
|
|
m1 = QtGui.QTransform()
|
|
m1.translate(self.childGroup.pos().x(), self.childGroup.pos().y())
|
|
return m*m1
|
|
|
|
def setAspectLocked(self, s):
|
|
self.aspectLocked = s
|
|
|
|
def viewScale(self):
|
|
pr = self.range
|
|
#print "viewScale:", self.range
|
|
xd = pr[0][1] - pr[0][0]
|
|
yd = pr[1][1] - pr[1][0]
|
|
if xd == 0 or yd == 0:
|
|
print "Warning: 0 range in view:", xd, yd
|
|
return array([1,1])
|
|
|
|
#cs = self.canvas().size()
|
|
cs = self.boundingRect()
|
|
scale = array([cs.width() / xd, cs.height() / yd])
|
|
#print "view scale:", scale
|
|
return scale
|
|
|
|
def scaleBy(self, s, center=None):
|
|
#print "scaleBy", s, center
|
|
xr, yr = self.range
|
|
if center is None:
|
|
xc = (xr[1] + xr[0]) * 0.5
|
|
yc = (yr[1] + yr[0]) * 0.5
|
|
else:
|
|
(xc, yc) = center
|
|
|
|
x1 = xc + (xr[0]-xc) * s[0]
|
|
x2 = xc + (xr[1]-xc) * s[0]
|
|
y1 = yc + (yr[0]-yc) * s[1]
|
|
y2 = yc + (yr[1]-yc) * s[1]
|
|
|
|
#print xr, xc, s, (xr[0]-xc) * s[0], (xr[1]-xc) * s[0]
|
|
#print [[x1, x2], [y1, y2]]
|
|
|
|
|
|
|
|
self.setXRange(x1, x2, update=False, padding=0)
|
|
self.setYRange(y1, y2, padding=0)
|
|
#print self.range
|
|
|
|
def translateBy(self, t, viewCoords=False):
|
|
t = t.astype(float)
|
|
#print "translate:", t, self.viewScale()
|
|
if viewCoords: ## scale from pixels
|
|
t /= self.viewScale()
|
|
xr, yr = self.range
|
|
#self.setAxisScale(self.xBottom, xr[0] + t[0], xr[1] + t[0])
|
|
#self.setAxisScale(self.yLeft, yr[0] + t[1], yr[1] + t[1])
|
|
#print xr, yr, t
|
|
self.setXRange(xr[0] + t[0], xr[1] + t[0], update=False, padding=0)
|
|
self.setYRange(yr[0] + t[1], yr[1] + t[1], padding=0)
|
|
#self.replot(autoRange=False)
|
|
#self.updateMatrix()
|
|
|
|
|
|
def mouseMoveEvent(self, ev):
|
|
pos = array([ev.pos().x(), ev.pos().y()])
|
|
dif = pos - self.mousePos
|
|
dif *= -1
|
|
self.mousePos = pos
|
|
|
|
## Ignore axes if mouse is disabled
|
|
mask = array(self.mouseEnabled, dtype=float)
|
|
|
|
## Scale or translate based on mouse button
|
|
if ev.buttons() & QtCore.Qt.LeftButton:
|
|
if not self.yInverted:
|
|
mask *= array([1, -1])
|
|
tr = dif*mask
|
|
self.translateBy(tr, viewCoords=True)
|
|
self.emit(QtCore.SIGNAL('rangeChangedManually'), self.mouseEnabled)
|
|
ev.accept()
|
|
elif ev.buttons() & QtCore.Qt.RightButton:
|
|
dif = ev.screenPos() - ev.lastScreenPos()
|
|
dif = array([dif.x(), dif.y()])
|
|
dif[0] *= -1
|
|
s = ((mask * 0.02) + 1) ** dif
|
|
#print mask, dif, s
|
|
center = Point(self.childGroup.transform().inverted()[0].map(ev.buttonDownPos(QtCore.Qt.RightButton)))
|
|
self.scaleBy(s, center)
|
|
self.emit(QtCore.SIGNAL('rangeChangedManually'), self.mouseEnabled)
|
|
ev.accept()
|
|
else:
|
|
ev.ignore()
|
|
|
|
def mousePressEvent(self, ev):
|
|
self.mousePos = array([ev.pos().x(), ev.pos().y()])
|
|
self.pressPos = self.mousePos.copy()
|
|
ev.accept()
|
|
|
|
def mouseReleaseEvent(self, ev):
|
|
pos = array([ev.pos().x(), ev.pos().y()])
|
|
#if sum(abs(self.pressPos - pos)) < 3: ## Detect click
|
|
#if ev.button() == QtCore.Qt.RightButton:
|
|
#self.ctrlMenu.popup(self.mapToGlobal(ev.pos()))
|
|
self.mousePos = pos
|
|
ev.accept()
|
|
|
|
def setRange(self, ax, min, max, padding=0.02, update=True):
|
|
if ax == 0:
|
|
self.setXRange(min, max, update=update, padding=padding)
|
|
else:
|
|
self.setYRange(min, max, update=update, padding=padding)
|
|
|
|
def setYRange(self, min, max, update=True, padding=0.02):
|
|
#print "setYRange:", min, max
|
|
if min == max: ## If we requested no range, try to preserve previous scale. Otherwise just pick an arbitrary scale.
|
|
dy = self.range[1][1] - self.range[1][0]
|
|
if dy == 0:
|
|
dy = 1
|
|
min -= dy*0.5
|
|
max += dy*0.5
|
|
#raise Exception("Tried to set range with 0 width.")
|
|
if any(isnan([min, max])) or any(isinf([min, max])):
|
|
raise Exception("Not setting range [%s, %s]" % (str(min), str(max)))
|
|
|
|
padding = (max-min) * padding
|
|
min -= padding
|
|
max += padding
|
|
if self.range[1] != [min, max]:
|
|
#self.setAxisScale(self.yLeft, min, max)
|
|
self.range[1] = [min, max]
|
|
#self.ctrl.yMinText.setText('%g' % min)
|
|
#self.ctrl.yMaxText.setText('%g' % max)
|
|
self.emit(QtCore.SIGNAL('yRangeChanged'), self, (min, max))
|
|
self.emit(QtCore.SIGNAL('viewChanged'), self)
|
|
if update:
|
|
self.updateMatrix()
|
|
|
|
def setXRange(self, min, max, update=True, padding=0.02):
|
|
#print "setXRange:", min, max
|
|
if min == max:
|
|
dx = self.range[0][1] - self.range[0][0]
|
|
if dx == 0:
|
|
dx = 1
|
|
min -= dx*0.5
|
|
max += dx*0.5
|
|
#print "Warning: Tried to set range with 0 width."
|
|
#raise Exception("Tried to set range with 0 width.")
|
|
if any(isnan([min, max])) or any(isinf([min, max])):
|
|
raise Exception("Not setting range [%s, %s]" % (str(min), str(max)))
|
|
padding = (max-min) * padding
|
|
min -= padding
|
|
max += padding
|
|
if self.range[0] != [min, max]:
|
|
#self.setAxisScale(self.xBottom, min, max)
|
|
self.range[0] = [min, max]
|
|
#self.ctrl.xMinText.setText('%g' % min)
|
|
#self.ctrl.xMaxText.setText('%g' % max)
|
|
self.emit(QtCore.SIGNAL('xRangeChanged'), self, (min, max))
|
|
self.emit(QtCore.SIGNAL('viewChanged'), self)
|
|
if update:
|
|
self.updateMatrix()
|
|
|
|
def autoRange(self, padding=0.02):
|
|
br = self.childGroup.childrenBoundingRect()
|
|
#print br
|
|
#px = br.width() * padding
|
|
#py = br.height() * padding
|
|
self.setXRange(br.left(), br.right(), padding=padding, update=False)
|
|
self.setYRange(br.top(), br.bottom(), padding=padding)
|
|
|
|
def boundingRect(self):
|
|
return QtCore.QRectF(0, 0, self.size().width(), self.size().height())
|
|
|
|
def paint(self, p, opt, widget):
|
|
if self.drawFrame:
|
|
bounds = self.boundingRect()
|
|
p.setPen(QtGui.QPen(QtGui.QColor(100, 100, 100)))
|
|
#p.fillRect(bounds, QtGui.QColor(0, 0, 0))
|
|
p.drawRect(bounds)
|
|
|
|
|
|
class InfiniteLine(GraphicsObject):
|
|
def __init__(self, view, pos=0, angle=90, pen=None, movable=False, bounds=None):
|
|
GraphicsObject.__init__(self)
|
|
self.bounds = QtCore.QRectF() ## graphicsitem boundary
|
|
|
|
if bounds is None: ## allowed value boundaries for orthogonal lines
|
|
self.maxRange = [None, None]
|
|
else:
|
|
self.maxRange = bounds
|
|
self.movable = movable
|
|
self.view = weakref.ref(view)
|
|
self.p = [0, 0]
|
|
self.setAngle(angle)
|
|
self.setPos(pos)
|
|
|
|
if movable:
|
|
self.setAcceptHoverEvents(True)
|
|
|
|
|
|
|
|
if pen is None:
|
|
pen = QtGui.QPen(QtGui.QColor(200, 200, 100))
|
|
self.setPen(pen)
|
|
self.currentPen = self.pen
|
|
#self.setFlag(self.ItemSendsScenePositionChanges)
|
|
#for p in self.getBoundingParents():
|
|
#QtCore.QObject.connect(p, QtCore.SIGNAL('viewChanged'), self.updateLine)
|
|
QtCore.QObject.connect(self.view(), QtCore.SIGNAL('viewChanged'), self.updateLine)
|
|
|
|
def setBounds(self, bounds):
|
|
self.maxRange = bounds
|
|
self.setValue(self.value())
|
|
|
|
def hoverEnterEvent(self, ev):
|
|
self.currentPen = QtGui.QPen(QtGui.QColor(255, 0,0))
|
|
self.update()
|
|
ev.ignore()
|
|
|
|
def hoverLeaveEvent(self, ev):
|
|
self.currentPen = self.pen
|
|
self.update()
|
|
ev.ignore()
|
|
|
|
def setPen(self, pen):
|
|
self.pen = pen
|
|
self.currentPen = self.pen
|
|
|
|
def setAngle(self, angle):
|
|
self.angle = ((angle+45) % 180) - 45 ## -45 <= angle < 135
|
|
self.updateLine()
|
|
|
|
def setPos(self, pos):
|
|
if type(pos) in [list, tuple]:
|
|
newPos = pos
|
|
elif isinstance(pos, QtCore.QPointF):
|
|
newPos = [pos.x(), pos.y()]
|
|
else:
|
|
if self.angle == 90:
|
|
newPos = [pos, 0]
|
|
elif self.angle == 0:
|
|
newPos = [0, pos]
|
|
else:
|
|
raise Exception("Must specify 2D coordinate for non-orthogonal lines.")
|
|
|
|
## check bounds (only works for orthogonal lines)
|
|
if self.angle == 90:
|
|
if self.maxRange[0] is not None:
|
|
newPos[0] = max(newPos[0], self.maxRange[0])
|
|
if self.maxRange[1] is not None:
|
|
newPos[0] = min(newPos[0], self.maxRange[1])
|
|
elif self.angle == 0:
|
|
if self.maxRange[0] is not None:
|
|
newPos[1] = max(newPos[1], self.maxRange[0])
|
|
if self.maxRange[1] is not None:
|
|
newPos[1] = min(newPos[1], self.maxRange[1])
|
|
|
|
|
|
if self.p != newPos:
|
|
self.p = newPos
|
|
self.updateLine()
|
|
self.emit(QtCore.SIGNAL('positionChanged'), self)
|
|
|
|
def getXPos(self):
|
|
return self.p[0]
|
|
|
|
def getYPos(self):
|
|
return self.p[1]
|
|
|
|
def getPos(self):
|
|
return self.p
|
|
|
|
def value(self):
|
|
if self.angle%180 == 0:
|
|
return self.getYPos()
|
|
elif self.angle%180 == 90:
|
|
return self.getXPos()
|
|
else:
|
|
return self.getPos()
|
|
|
|
def setValue(self, v):
|
|
self.setPos(v)
|
|
|
|
## broken in 4.7
|
|
#def itemChange(self, change, val):
|
|
#if change in [self.ItemScenePositionHasChanged, self.ItemSceneHasChanged]:
|
|
#self.updateLine()
|
|
#print "update", change
|
|
#print self.getBoundingParents()
|
|
#else:
|
|
#print "ignore", change
|
|
#return GraphicsObject.itemChange(self, change, val)
|
|
|
|
def updateLine(self):
|
|
|
|
#unit = QtCore.QRect(0, 0, 10, 10)
|
|
#if self.scene() is not None:
|
|
#gv = self.scene().views()[0]
|
|
#unit = gv.mapToScene(unit).boundingRect()
|
|
##print unit
|
|
#unit = self.mapRectFromScene(unit)
|
|
##print unit
|
|
|
|
vr = self.view().viewRect()
|
|
#vr = self.viewBounds()
|
|
if vr is None:
|
|
return
|
|
#print 'before', self.bounds
|
|
|
|
if self.angle > 45:
|
|
m = tan((90-self.angle) * pi / 180.)
|
|
y2 = vr.bottom()
|
|
y1 = vr.top()
|
|
x1 = self.p[0] + (y1 - self.p[1]) * m
|
|
x2 = self.p[0] + (y2 - self.p[1]) * m
|
|
else:
|
|
m = tan(self.angle * pi / 180.)
|
|
x1 = vr.left()
|
|
x2 = vr.right()
|
|
y2 = self.p[1] + (x1 - self.p[0]) * m
|
|
y1 = self.p[1] + (x2 - self.p[0]) * m
|
|
#print vr, x1, y1, x2, y2
|
|
self.prepareGeometryChange()
|
|
self.line = (QtCore.QPointF(x1, y1), QtCore.QPointF(x2, y2))
|
|
self.bounds = QtCore.QRectF(self.line[0], self.line[1])
|
|
## Stupid bug causes lines to disappear:
|
|
if self.angle % 180 == 90:
|
|
px = self.pixelWidth()
|
|
#self.bounds.setWidth(1e-9)
|
|
self.bounds.setX(x1 + px*-5)
|
|
self.bounds.setWidth(px*10)
|
|
if self.angle % 180 == 0:
|
|
px = self.pixelHeight()
|
|
#self.bounds.setHeight(1e-9)
|
|
self.bounds.setY(y1 + px*-5)
|
|
self.bounds.setHeight(px*10)
|
|
|
|
#QtGui.QGraphicsLineItem.setLine(self, x1, y1, x2, y2)
|
|
#self.update()
|
|
|
|
def boundingRect(self):
|
|
#self.updateLine()
|
|
#return QtGui.QGraphicsLineItem.boundingRect(self)
|
|
#print "bounds", self.bounds
|
|
return self.bounds
|
|
|
|
def paint(self, p, *args):
|
|
w,h = self.pixelWidth()*5, self.pixelHeight()*5*1.1547
|
|
#self.updateLine()
|
|
l = self.line
|
|
|
|
p.setPen(self.currentPen)
|
|
#print "paint", self.line
|
|
p.drawLine(l[0], l[1])
|
|
|
|
p.setBrush(QtGui.QBrush(self.currentPen.color()))
|
|
p.drawConvexPolygon(QtGui.QPolygonF([
|
|
l[0] + QtCore.QPointF(-w, 0),
|
|
l[0] + QtCore.QPointF(0, h),
|
|
l[0] + QtCore.QPointF(w, 0),
|
|
]))
|
|
|
|
#p.setPen(QtGui.QPen(QtGui.QColor(255,0,0)))
|
|
#p.drawRect(self.boundingRect())
|
|
|
|
def mousePressEvent(self, ev):
|
|
if self.movable and ev.button() == QtCore.Qt.LeftButton:
|
|
ev.accept()
|
|
self.pressDelta = self.mapToParent(ev.pos()) - QtCore.QPointF(*self.p)
|
|
else:
|
|
ev.ignore()
|
|
|
|
def mouseMoveEvent(self, ev):
|
|
self.setPos(self.mapToParent(ev.pos()) - self.pressDelta)
|
|
self.emit(QtCore.SIGNAL('dragged'), self)
|
|
|
|
|
|
|
|
class LinearRegionItem(GraphicsObject):
|
|
"""Used for marking a horizontal or vertical region in plots."""
|
|
def __init__(self, view, orientation="horizontal", vals=[0,1], brush=None, movable=True, bounds=None):
|
|
GraphicsObject.__init__(self)
|
|
self.orientation = orientation
|
|
if hasattr(self, "ItemHasNoContents"):
|
|
self.setFlag(self.ItemHasNoContents)
|
|
self.rect = QtGui.QGraphicsRectItem(self)
|
|
self.rect.setParentItem(self)
|
|
self.bounds = QtCore.QRectF()
|
|
self.view = weakref.ref(view)
|
|
|
|
self.setBrush = self.rect.setBrush
|
|
self.brush = self.rect.brush
|
|
|
|
if orientation[0] == 'h':
|
|
self.lines = [
|
|
InfiniteLine(view, QtCore.QPointF(0, vals[0]), 0, movable=movable, bounds=bounds),
|
|
InfiniteLine(view, QtCore.QPointF(0, vals[1]), 0, movable=movable, bounds=bounds)]
|
|
else:
|
|
self.lines = [
|
|
InfiniteLine(view, QtCore.QPointF(vals[0], 0), 90, movable=movable, bounds=bounds),
|
|
InfiniteLine(view, QtCore.QPointF(vals[1], 0), 90, movable=movable, bounds=bounds)]
|
|
QtCore.QObject.connect(self.view(), QtCore.SIGNAL('viewChanged'), self.updateBounds)
|
|
|
|
for l in self.lines:
|
|
l.setParentItem(self)
|
|
l.connect(QtCore.SIGNAL('positionChanged'), self.lineMoved)
|
|
|
|
if brush is None:
|
|
brush = QtGui.QBrush(QtGui.QColor(0, 0, 255, 50))
|
|
self.setBrush(brush)
|
|
|
|
def setBounds(self, bounds):
|
|
for l in self.lines:
|
|
l.setBounds(bounds)
|
|
|
|
|
|
def boundingRect(self):
|
|
return self.rect.boundingRect()
|
|
|
|
def lineMoved(self):
|
|
self.updateBounds()
|
|
self.emit(QtCore.SIGNAL('regionChanged'), self)
|
|
|
|
def updateBounds(self):
|
|
vb = self.view().viewRect()
|
|
vals = [self.lines[0].value(), self.lines[1].value()]
|
|
if self.orientation[0] == 'h':
|
|
vb.setTop(max(vals))
|
|
vb.setBottom(min(vals))
|
|
else:
|
|
vb.setLeft(min(vals))
|
|
vb.setRight(max(vals))
|
|
if vb != self.bounds:
|
|
self.bounds = vb
|
|
self.rect.setRect(vb)
|
|
|
|
def mousePressEvent(self, ev):
|
|
for l in self.lines:
|
|
l.mousePressEvent(ev)
|
|
#if self.movable and ev.button() == QtCore.Qt.LeftButton:
|
|
#ev.accept()
|
|
#self.pressDelta = self.mapToParent(ev.pos()) - QtCore.QPointF(*self.p)
|
|
#else:
|
|
#ev.ignore()
|
|
|
|
def mouseMoveEvent(self, ev):
|
|
self.lines[0].blockSignals(True) # only want to update once
|
|
for l in self.lines:
|
|
l.mouseMoveEvent(ev)
|
|
self.lines[0].blockSignals(False)
|
|
#self.setPos(self.mapToParent(ev.pos()) - self.pressDelta)
|
|
#self.emit(QtCore.SIGNAL('dragged'), self)
|
|
|
|
def getRegion(self):
|
|
if self.orientation[0] == 'h':
|
|
r = (self.bounds.top(), self.bounds.bottom())
|
|
else:
|
|
r = (self.bounds.left(), self.bounds.right())
|
|
return (min(r), max(r))
|
|
|
|
def setRegion(self, rgn):
|
|
self.lines[0].setValue(rgn[0])
|
|
self.lines[1].setValue(rgn[1])
|
|
|
|
|
|
class VTickGroup(QtGui.QGraphicsPathItem):
|
|
def __init__(self, xvals=None, yrange=None, pen=None, relative=False, view=None):
|
|
QtGui.QGraphicsPathItem.__init__(self)
|
|
if yrange is None:
|
|
yrange = [0, 1]
|
|
if xvals is None:
|
|
xvals = []
|
|
if pen is None:
|
|
pen = QtGui.QPen(QtGui.QColor(200, 200, 200))
|
|
self.ticks = []
|
|
self.xvals = []
|
|
if view is None:
|
|
self.view = None
|
|
else:
|
|
self.view = weakref.ref(view)
|
|
self.yrange = [0,1]
|
|
self.setPen(pen)
|
|
self.setYRange(yrange, relative)
|
|
self.setXVals(xvals)
|
|
self.valid = False
|
|
|
|
|
|
#def setPen(self, pen=None):
|
|
#if pen is None:
|
|
#pen = self.pen
|
|
#self.pen = pen
|
|
#for t in self.ticks:
|
|
#t.setPen(pen)
|
|
##self.update()
|
|
|
|
def setXVals(self, vals):
|
|
self.xvals = vals
|
|
self.rebuildTicks()
|
|
self.valid = False
|
|
|
|
def setYRange(self, vals, relative=False):
|
|
self.yrange = vals
|
|
self.relative = relative
|
|
if self.view is not None:
|
|
if relative:
|
|
#QtCore.QObject.connect(self.view, QtCore.SIGNAL('viewChanged'), self.rebuildTicks)
|
|
QtCore.QObject.connect(self.view(), QtCore.SIGNAL('viewChanged'), self.rescale)
|
|
else:
|
|
try:
|
|
#QtCore.QObject.disconnect(self.view, QtCore.SIGNAL('viewChanged'), self.rebuildTicks)
|
|
QtCore.QObject.disconnect(self.view(), QtCore.SIGNAL('viewChanged'), self.rescale)
|
|
except:
|
|
pass
|
|
self.rebuildTicks()
|
|
self.valid = False
|
|
|
|
def rescale(self):
|
|
#print "RESCALE:"
|
|
self.resetTransform()
|
|
#height = self.view.size().height()
|
|
#p1 = self.mapFromScene(self.view.mapToScene(QtCore.QPoint(0, height * (1.0-self.yrange[0]))))
|
|
#p2 = self.mapFromScene(self.view.mapToScene(QtCore.QPoint(0, height * (1.0-self.yrange[1]))))
|
|
#yr = [p1.y(), p2.y()]
|
|
vb = self.view().viewRect()
|
|
p1 = vb.bottom() - vb.height() * self.yrange[0]
|
|
p2 = vb.bottom() - vb.height() * self.yrange[1]
|
|
yr = [p1, p2]
|
|
|
|
#print " ", vb, yr
|
|
self.translate(0.0, yr[0])
|
|
self.scale(1.0, (yr[1]-yr[0]))
|
|
#print " ", self.mapRectToScene(self.boundingRect())
|
|
self.boundingRect()
|
|
self.update()
|
|
|
|
def boundingRect(self):
|
|
#print "--request bounds:"
|
|
b = QtGui.QGraphicsPathItem.boundingRect(self)
|
|
#print " ", self.mapRectToScene(b)
|
|
return b
|
|
|
|
def yRange(self):
|
|
#if self.relative:
|
|
#height = self.view.size().height()
|
|
#p1 = self.mapFromScene(self.view.mapToScene(QtCore.QPoint(0, height * (1.0-self.yrange[0]))))
|
|
#p2 = self.mapFromScene(self.view.mapToScene(QtCore.QPoint(0, height * (1.0-self.yrange[1]))))
|
|
#return [p1.y(), p2.y()]
|
|
#else:
|
|
#return self.yrange
|
|
|
|
return self.yrange
|
|
|
|
def rebuildTicks(self):
|
|
self.path = QtGui.QPainterPath()
|
|
yrange = self.yRange()
|
|
#print "rebuild ticks:", yrange
|
|
for x in self.xvals:
|
|
#path.moveTo(x, yrange[0])
|
|
#path.lineTo(x, yrange[1])
|
|
self.path.moveTo(x, 0.)
|
|
self.path.lineTo(x, 1.)
|
|
self.setPath(self.path)
|
|
self.valid = True
|
|
self.rescale()
|
|
#print " done..", self.boundingRect()
|
|
|
|
def paint(self, *args):
|
|
if not self.valid:
|
|
self.rebuildTicks()
|
|
#print "Paint", self.boundingRect()
|
|
QtGui.QGraphicsPathItem.paint(self, *args)
|
|
|
|
|
|
class GridItem(UIGraphicsItem):
|
|
def __init__(self, view, bounds=None, *args):
|
|
UIGraphicsItem.__init__(self, view, bounds)
|
|
#QtGui.QGraphicsItem.__init__(self, *args)
|
|
self.setFlag(QtGui.QGraphicsItem.ItemClipsToShape)
|
|
#self.setCacheMode(QtGui.QGraphicsItem.DeviceCoordinateCache)
|
|
|
|
self.picture = None
|
|
|
|
|
|
def viewChangedEvent(self, newRect, oldRect):
|
|
self.picture = None
|
|
|
|
def paint(self, p, opt, widget):
|
|
#p.setPen(QtGui.QPen(QtGui.QColor(100, 100, 100)))
|
|
#p.drawRect(self.boundingRect())
|
|
|
|
## draw picture
|
|
if self.picture is None:
|
|
#print "no pic, draw.."
|
|
self.generatePicture()
|
|
p.drawPicture(0, 0, self.picture)
|
|
#print "draw"
|
|
|
|
|
|
def generatePicture(self):
|
|
self.picture = QtGui.QPicture()
|
|
p = QtGui.QPainter()
|
|
p.begin(self.picture)
|
|
|
|
dt = self.viewTransform().inverted()[0]
|
|
vr = self.viewRect()
|
|
unit = self.unitRect()
|
|
dim = [vr.width(), vr.height()]
|
|
lvr = self.boundingRect()
|
|
ul = array([lvr.left(), lvr.top()])
|
|
br = array([lvr.right(), lvr.bottom()])
|
|
|
|
texts = []
|
|
|
|
if ul[1] > br[1]:
|
|
x = ul[1]
|
|
ul[1] = br[1]
|
|
br[1] = x
|
|
|
|
for i in range(2, -1, -1): ## Draw three different scales of grid
|
|
|
|
dist = br-ul
|
|
nlTarget = 10.**i
|
|
d = 10. ** floor(log10(abs(dist/nlTarget))+0.5)
|
|
ul1 = floor(ul / d) * d
|
|
br1 = ceil(br / d) * d
|
|
dist = br1-ul1
|
|
nl = (dist / d) + 0.5
|
|
for ax in range(0,2): ## Draw grid for both axes
|
|
ppl = dim[ax] / nl[ax]
|
|
c = clip(3.*(ppl-3), 0., 30.)
|
|
linePen = QtGui.QPen(QtGui.QColor(255, 255, 255, c))
|
|
textPen = QtGui.QPen(QtGui.QColor(255, 255, 255, c*2))
|
|
|
|
bx = (ax+1) % 2
|
|
for x in range(0, int(nl[ax])):
|
|
p.setPen(linePen)
|
|
p1 = array([0.,0.])
|
|
p2 = array([0.,0.])
|
|
p1[ax] = ul1[ax] + x * d[ax]
|
|
p2[ax] = p1[ax]
|
|
p1[bx] = ul[bx]
|
|
p2[bx] = br[bx]
|
|
p.drawLine(QtCore.QPointF(p1[0], p1[1]), QtCore.QPointF(p2[0], p2[1]))
|
|
if i < 2:
|
|
p.setPen(textPen)
|
|
if ax == 0:
|
|
x = p1[0] + unit.width()
|
|
y = ul[1] + unit.height() * 8.
|
|
else:
|
|
x = ul[0] + unit.width()*3
|
|
y = p1[1] + unit.height()
|
|
texts.append((QtCore.QPointF(x, y), "%g"%p1[ax]))
|
|
tr = self.viewTransform()
|
|
tr.scale(1.5, 1.5)
|
|
p.setWorldTransform(tr.inverted()[0])
|
|
for t in texts:
|
|
x = tr.map(t[0])
|
|
p.drawText(x, t[1])
|
|
p.end()
|
|
|
|
class ScaleBar(UIGraphicsItem):
|
|
def __init__(self, view, size, width=5, color=(100, 100, 255)):
|
|
self.size = size
|
|
UIGraphicsItem.__init__(self, view)
|
|
self.setAcceptedMouseButtons(QtCore.Qt.NoButton)
|
|
#self.pen = QtGui.QPen(QtGui.QColor(*color))
|
|
#self.pen.setWidth(width)
|
|
#self.pen.setCosmetic(True)
|
|
#self.pen2 = QtGui.QPen(QtGui.QColor(0,0,0))
|
|
#self.pen2.setWidth(width+2)
|
|
#self.pen2.setCosmetic(True)
|
|
self.brush = QtGui.QBrush(QtGui.QColor(*color))
|
|
self.pen = QtGui.QPen(QtGui.QColor(0,0,0))
|
|
self.width = width
|
|
|
|
def paint(self, p, opt, widget):
|
|
rect = self.boundingRect()
|
|
unit = self.unitRect()
|
|
y = rect.bottom() + (rect.top()-rect.bottom()) * 0.02
|
|
y1 = y + unit.height()*self.width
|
|
x = rect.right() + (rect.left()-rect.right()) * 0.02
|
|
x1 = x - self.size
|
|
|
|
|
|
p.setPen(self.pen)
|
|
p.setBrush(self.brush)
|
|
rect = QtCore.QRectF(
|
|
QtCore.QPointF(x1, y1),
|
|
QtCore.QPointF(x, y)
|
|
)
|
|
p.translate(x1, y1)
|
|
p.scale(rect.width(), rect.height())
|
|
p.drawRect(0, 0, 1, 1)
|
|
|
|
alpha = clip(((self.size/unit.width()) - 40.) * 255. / 80., 0, 255)
|
|
p.setPen(QtGui.QPen(QtGui.QColor(0, 0, 0, alpha)))
|
|
for i in range(1, 10):
|
|
#x2 = x + (x1-x) * 0.1 * i
|
|
x2 = 0.1 * i
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p.drawLine(QtCore.QPointF(x2, 0), QtCore.QPointF(x2, 1))
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|
|
|
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def setSize(self, s):
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self.size = s
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|
|
|
class ColorScaleBar(UIGraphicsItem):
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def __init__(self, view, size, offset):
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self.size = size
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|
self.offset = offset
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|
UIGraphicsItem.__init__(self, view)
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self.setAcceptedMouseButtons(QtCore.Qt.NoButton)
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self.brush = QtGui.QBrush(QtGui.QColor(200,0,0))
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self.pen = QtGui.QPen(QtGui.QColor(0,0,0))
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self.labels = {'max': 1, 'min': 0}
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self.gradient = QtGui.QLinearGradient()
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self.gradient.setColorAt(0, QtGui.QColor(0,0,0))
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|
self.gradient.setColorAt(1, QtGui.QColor(255,0,0))
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|
|
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def setGradient(self, g):
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|
self.gradient = g
|
|
self.update()
|
|
|
|
def setLabels(self, l):
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|
self.labels = l
|
|
self.update()
|
|
|
|
def paint(self, p, opt, widget):
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|
rect = self.boundingRect() ## Boundaries of visible area in scene coords.
|
|
unit = self.unitRect() ## Size of one view pixel in scene coords.
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|
|
|
## determine max width of all labels
|
|
labelWidth = 0
|
|
labelHeight = 0
|
|
for k in self.labels:
|
|
b = p.boundingRect(QtCore.QRectF(0, 0, 0, 0), QtCore.Qt.AlignLeft | QtCore.Qt.AlignVCenter, k)
|
|
labelWidth = max(labelWidth, b.width())
|
|
labelHeight = max(labelHeight, b.height())
|
|
|
|
labelWidth *= unit.width()
|
|
labelHeight *= unit.height()
|
|
|
|
textPadding = 2 # in px
|
|
|
|
if self.offset[0] < 0:
|
|
x3 = rect.right() + unit.width() * self.offset[0]
|
|
x2 = x3 - labelWidth - unit.width()*textPadding*2
|
|
x1 = x2 - unit.width() * self.size[0]
|
|
else:
|
|
x1 = rect.left() + unit.width() * self.offset[0]
|
|
x2 = x1 + unit.width() * self.size[0]
|
|
x3 = x2 + labelWidth + unit.width()*textPadding*2
|
|
if self.offset[1] < 0:
|
|
y2 = rect.top() - unit.height() * self.offset[1]
|
|
y1 = y2 + unit.height() * self.size[1]
|
|
else:
|
|
y1 = rect.bottom() - unit.height() * self.offset[1]
|
|
y2 = y1 - unit.height() * self.size[1]
|
|
self.b = [x1,x2,x3,y1,y2,labelWidth]
|
|
|
|
## Draw background
|
|
p.setPen(self.pen)
|
|
p.setBrush(QtGui.QBrush(QtGui.QColor(255,255,255,100)))
|
|
rect = QtCore.QRectF(
|
|
QtCore.QPointF(x1 - unit.width()*textPadding, y1 + labelHeight/2 + unit.height()*textPadding),
|
|
QtCore.QPointF(x3, y2 - labelHeight/2 - unit.height()*textPadding)
|
|
)
|
|
p.drawRect(rect)
|
|
|
|
|
|
## Have to scale painter so that text and gradients are correct size. Bleh.
|
|
p.scale(unit.width(), unit.height())
|
|
|
|
## Draw color bar
|
|
self.gradient.setStart(0, y1/unit.height())
|
|
self.gradient.setFinalStop(0, y2/unit.height())
|
|
p.setBrush(self.gradient)
|
|
rect = QtCore.QRectF(
|
|
QtCore.QPointF(x1/unit.width(), y1/unit.height()),
|
|
QtCore.QPointF(x2/unit.width(), y2/unit.height())
|
|
)
|
|
p.drawRect(rect)
|
|
|
|
|
|
## draw labels
|
|
p.setPen(QtGui.QPen(QtGui.QColor(0,0,0)))
|
|
tx = x2 + unit.width()*textPadding
|
|
lh = labelHeight/unit.height()
|
|
for k in self.labels:
|
|
y = y1 + self.labels[k] * (y2-y1)
|
|
p.drawText(QtCore.QRectF(tx/unit.width(), y/unit.height() - lh/2.0, 1000, lh), QtCore.Qt.AlignLeft | QtCore.Qt.AlignVCenter, k)
|
|
|
|
|