merged many changes in from acq4:

- added vertical lines / regions for plots
 - added gradient editor widget
 - many bugfixes
 - cleaned up imageview a bit

GradientWidget.py

@@ -0,0 +1,364 @@
+# -*- coding: utf-8 -*-
+from PyQt4 import QtGui, QtCore
+
+
+class TickSlider(QtGui.QGraphicsView):
+    def __init__(self, parent=None, orientation='bottom', allowAdd=True, **kargs):
+        QtGui.QGraphicsView.__init__(self, parent)
+        #self.orientation = orientation
+        self.allowAdd = allowAdd
+        self.setVerticalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOff)
+        self.setHorizontalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOff)
+        self.setTransformationAnchor(QtGui.QGraphicsView.NoAnchor)
+        self.setResizeAnchor(QtGui.QGraphicsView.AnchorViewCenter)
+        self.setRenderHints(QtGui.QPainter.Antialiasing | QtGui.QPainter.TextAntialiasing)
+        self.length = 100
+        self.tickSize = 15
+        self.orientations = {
+            'left': (270, 1, -1), 
+            'right': (270, 1, 1), 
+            'top': (0, 1, -1), 
+            'bottom': (0, 1, 1)
+        }
+            
+        self.scene = QtGui.QGraphicsScene()
+        self.setScene(self.scene)
+        
+        self.ticks = {}
+        self.maxDim = 20
+        self.setOrientation(orientation)
+        self.setFrameStyle(QtGui.QFrame.NoFrame | QtGui.QFrame.Plain)
+        self.setBackgroundRole(QtGui.QPalette.NoRole)
+        self.setMouseTracking(True)
+        
+    def keyPressEvent(self, ev):
+        ev.ignore()
+     
+    def setMaxDim(self, mx=None):
+        if mx is None:
+            mx = self.maxDim
+        else:
+            self.maxDim = mx
+            
+        if self.orientation in ['bottom', 'top']:
+            self.setFixedHeight(mx)
+            self.setMaximumWidth(16777215)
+        else:
+            self.setFixedWidth(mx)
+            self.setMaximumHeight(16777215)
+        
+    def setOrientation(self, ort):
+        self.orientation = ort
+        self.resetTransform()
+        self.rotate(self.orientations[ort][0])
+        self.scale(*self.orientations[ort][1:])
+        self.setMaxDim()
+        
+    def addTick(self, x, color=None, movable=True):
+        if color is None:
+            color = QtGui.QColor(255,255,255)
+        tick = Tick(self, [x*self.length, 0], color, movable, self.tickSize)
+        self.ticks[tick] = x
+        self.scene.addItem(tick)
+        return tick
+                
+    def removeTick(self, tick):
+        del self.ticks[tick]
+        self.scene.removeItem(tick)
+                
+    def tickMoved(self, tick, pos):
+        #print "tick changed"
+        ## Correct position of tick if it has left bounds.
+        newX = min(max(0, pos.x()), self.length)
+        pos.setX(newX)
+        tick.setPos(pos)
+        self.ticks[tick] = float(newX) / self.length
+    
+    def tickClicked(self, tick, ev):
+        if ev.button() == QtCore.Qt.RightButton:
+            self.removeTick(tick)
+    
+    def widgetLength(self):
+        if self.orientation in ['bottom', 'top']:
+            return self.width()
+        else:
+            return self.height()
+    
+    def resizeEvent(self, ev):
+        wlen = max(40, self.widgetLength())
+        self.setLength(wlen-self.tickSize)
+        bounds = self.scene.itemsBoundingRect()
+        bounds.setLeft(min(-self.tickSize*0.5, bounds.left()))
+        bounds.setRight(max(self.length + self.tickSize, bounds.right()))
+        #bounds.setTop(min(bounds.top(), self.tickSize))
+        #bounds.setBottom(max(0, bounds.bottom()))
+        self.setSceneRect(bounds)
+        self.fitInView(bounds, QtCore.Qt.KeepAspectRatio)
+        
+    def setLength(self, newLen):
+        for t, x in self.ticks.items():
+            t.setPos(x * newLen, t.pos().y())
+        self.length = float(newLen)
+        
+    def mousePressEvent(self, ev):
+        QtGui.QGraphicsView.mousePressEvent(self, ev)
+        self.ignoreRelease = False
+        if len(self.items(ev.pos())) > 0:  ## Let items handle their own clicks
+            self.ignoreRelease = True
+        
+    def mouseReleaseEvent(self, ev):
+        QtGui.QGraphicsView.mouseReleaseEvent(self, ev)
+        if self.ignoreRelease:
+            return
+            
+        pos = self.mapToScene(ev.pos())
+        if pos.x() < 0 or pos.x() > self.length:
+            return
+        if pos.y() < 0 or pos.y() > self.tickSize:
+            return
+            
+        if ev.button() == QtCore.Qt.LeftButton and self.allowAdd:
+            pos.setX(min(max(pos.x(), 0), self.length))
+            self.addTick(pos.x()/self.length)
+        elif ev.button() == QtCore.Qt.RightButton:
+            self.showMenu(ev)
+            
+        
+    def showMenu(self, ev):
+        pass
+
+    def setTickColor(self, tick, color):
+        tick = self.getTick(tick)
+        tick.color = color
+        tick.setBrush(QtGui.QBrush(QtGui.QColor(tick.color)))
+
+    def setTickValue(self, tick, val):
+        tick = self.getTick(tick)
+        val = min(max(0.0, val), 1.0)
+        x = val * self.length
+        pos = tick.pos()
+        pos.setX(x)
+        tick.setPos(pos)
+        self.ticks[tick] = val
+        
+    def tickValue(self, tick):
+        tick = self.getTick(tick)
+        return self.ticks[tick]
+        
+    def getTick(self, tick):
+        if type(tick) is int:
+            tick = self.listTicks()[tick][0]
+        return tick
+
+    def mouseMoveEvent(self, ev):
+        QtGui.QGraphicsView.mouseMoveEvent(self, ev)
+        #print ev.pos(), ev.buttons()
+
+    def listTicks(self):
+        ticks = self.ticks.items()
+        ticks.sort(lambda a,b: cmp(a[1], b[1]))
+        return ticks
+
+
+class GradientWidget(TickSlider):
+    def __init__(self, *args, **kargs):
+        TickSlider.__init__(self, *args, **kargs)
+        self.rectSize = 15
+        self.gradRect = QtGui.QGraphicsRectItem(QtCore.QRectF(0, -self.rectSize, 100, self.rectSize))
+        self.colorMode = 'rgb'
+        
+        
+        #self.gradient = QtGui.QLinearGradient(QtCore.QPointF(0,0), QtCore.QPointF(100,0))
+        self.scene.addItem(self.gradRect)
+        self.addTick(0, QtGui.QColor(0,0,0), True)
+        self.addTick(1, QtGui.QColor(255,0,0), True)
+        
+        self.setMaxDim(self.rectSize + self.tickSize)
+        self.updateGradient()
+            
+        #self.btn = QtGui.QPushButton('RGB')
+        #self.btnProxy = self.scene.addWidget(self.btn)
+        #self.btnProxy.setFlag(self.btnProxy.ItemIgnoresTransformations)
+        #self.btnProxy.scale(0.7, 0.7)
+        #self.btnProxy.translate(-self.btnProxy.sceneBoundingRect().width()+self.tickSize/2., 0)
+        #if self.orientation == 'bottom':
+            #self.btnProxy.translate(0, -self.rectSize)
+            
+    def setColorMode(self, cm):
+        if cm not in ['rgb', 'hsv']:
+            raise Exception("Unknown color mode %s" % str(cm))
+        self.colorMode = cm
+        self.updateGradient()
+        
+    def updateGradient(self):
+        self.gradient = self.getGradient()
+        self.gradRect.setBrush(QtGui.QBrush(self.gradient))
+        self.emit(QtCore.SIGNAL('gradientChanged'), self)
+        
+    def setLength(self, newLen):
+        TickSlider.setLength(self, newLen)
+        self.gradRect.setRect(0, -self.rectSize, newLen, self.rectSize)
+        self.updateGradient()
+        
+        
+        
+    def tickClicked(self, tick, ev):
+        if ev.button() == QtCore.Qt.LeftButton:
+            if not tick.colorChangeAllowed:
+                return
+            color = QtGui.QColorDialog.getColor(tick.color, None, "Select Color", QtGui.QColorDialog.ShowAlphaChannel)
+            if color.isValid():
+                self.setTickColor(tick, color)
+                self.updateGradient()
+        elif ev.button() == QtCore.Qt.RightButton:
+            if not tick.removeAllowed:
+                return
+            if len(self.ticks) > 2:
+                self.removeTick(tick)
+                self.updateGradient()
+                
+    def tickMoved(self, tick, pos):
+        TickSlider.tickMoved(self, tick, pos)
+        self.updateGradient()
+
+
+    def getGradient(self):
+        g = QtGui.QLinearGradient(QtCore.QPointF(0,0), QtCore.QPointF(self.length,0))
+        if self.colorMode == 'rgb':
+            ticks = self.listTicks()
+            g.setStops([(x, QtGui.QColor(t.color)) for t,x in ticks])
+        elif self.colorMode == 'hsv':  ## HSV mode is approximated for display by interpolating 10 points between each stop
+            ticks = self.listTicks()
+            stops = []
+            stops.append((ticks[0][1], ticks[0][0].color))
+            for i in range(1,len(ticks)):
+                x1 = ticks[i-1][1]
+                x2 = ticks[i][1]
+                dx = (x2-x1) / 10.
+                for j in range(1,10):
+                    x = x1 + dx*j
+                    stops.append((x, self.getColor(x)))
+                stops.append((x2, self.getColor(x2)))
+            g.setStops(stops)
+        return g
+        
+    def getColor(self, x):
+        ticks = self.listTicks()
+        if x <= ticks[0][1]:
+            return QtGui.QColor(ticks[0][0].color)  # always copy colors before handing them out
+        if x >= ticks[-1][1]:
+            return QtGui.QColor(ticks[-1][0].color)
+            
+        x2 = ticks[0][1]
+        for i in range(1,len(ticks)):
+            x1 = x2
+            x2 = ticks[i][1]
+            if x1 <= x and x2 >= x:
+                break
+                
+        dx = (x2-x1)
+        if dx == 0:
+            f = 0.
+        else:
+            f = (x-x1) / dx
+        c1 = ticks[i-1][0].color
+        c2 = ticks[i][0].color
+        if self.colorMode == 'rgb':
+            r = c1.red() * (1.-f) + c2.red() * f
+            g = c1.green() * (1.-f) + c2.green() * f
+            b = c1.blue() * (1.-f) + c2.blue() * f
+            return QtGui.QColor(r, g, b)
+        elif self.colorMode == 'hsv':
+            h1,s1,v1,_ = c1.getHsv()
+            h2,s2,v2,_ = c2.getHsv()
+            h = h1 * (1.-f) + h2 * f
+            s = s1 * (1.-f) + s2 * f
+            v = v1 * (1.-f) + v2 * f
+            c = QtGui.QColor()
+            c.setHsv(h,s,v)
+            return c
+                    
+                    
+
+    def mouseReleaseEvent(self, ev):
+        TickSlider.mouseReleaseEvent(self, ev)
+        self.updateGradient()
+        
+    def addTick(self, x, color=None, movable=True):
+        if color is None:
+            color = self.getColor(x)
+        t = TickSlider.addTick(self, x, color=color, movable=movable)
+        t.colorChangeAllowed = True
+        t.removeAllowed = True
+        return t
+        
+
+class GammaWidget(TickSlider):
+    pass
+    
+        
+class Tick(QtGui.QGraphicsPolygonItem):
+    def __init__(self, view, pos, color, movable=True, scale=10):
+        #QObjectWorkaround.__init__(self)
+        self.movable = movable
+        self.view = view
+        self.scale = scale
+        self.color = color
+        #self.endTick = endTick
+        self.pg = QtGui.QPolygonF([QtCore.QPointF(0,0), QtCore.QPointF(-scale/3**0.5,scale), QtCore.QPointF(scale/3**0.5,scale)])
+        QtGui.QGraphicsPolygonItem.__init__(self, self.pg)
+        self.setPos(pos[0], pos[1])
+        self.setFlags(QtGui.QGraphicsItem.ItemIsMovable | QtGui.QGraphicsItem.ItemIsSelectable)
+        self.setBrush(QtGui.QBrush(QtGui.QColor(self.color)))
+        if self.movable:
+            self.setZValue(1)
+        else:
+            self.setZValue(0)
+
+    #def x(self):
+        #return self.pos().x()/100.
+
+    def mouseMoveEvent(self, ev):
+        #print self, "move", ev.scenePos()
+        if not self.movable:
+            return
+        if not ev.buttons() & QtCore.Qt.LeftButton:
+            return
+            
+            
+        newPos = ev.scenePos() + self.mouseOffset
+        newPos.setY(self.pos().y())
+        #newPos.setX(min(max(newPos.x(), 0), 100))
+        self.setPos(newPos)
+        self.view.tickMoved(self, newPos)
+        self.movedSincePress = True
+        #self.emit(QtCore.SIGNAL('tickChanged'), self)
+        ev.accept()
+
+    def mousePressEvent(self, ev):
+        self.movedSincePress = False
+        if ev.button() == QtCore.Qt.LeftButton:
+            ev.accept()
+            self.mouseOffset = self.pos() - ev.scenePos()
+            self.pressPos = ev.scenePos()
+        elif ev.button() == QtCore.Qt.RightButton:
+            ev.accept()
+            #if self.endTick:
+                #return
+            #self.view.tickChanged(self, delete=True)
+            
+    def mouseReleaseEvent(self, ev):
+        #print self, "release", ev.scenePos()
+        if not self.movedSincePress:
+            self.view.tickClicked(self, ev)
+        
+        #if ev.button() == QtCore.Qt.LeftButton and ev.scenePos() == self.pressPos:
+            #color = QtGui.QColorDialog.getColor(self.color, None, "Select Color", QtGui.QColorDialog.ShowAlphaChannel)
+            #if color.isValid():
+                #self.color = color
+                #self.setBrush(QtGui.QBrush(QtGui.QColor(self.color)))
+                ##self.emit(QtCore.SIGNAL('tickChanged'), self)
+                #self.view.tickChanged(self)
+        
+        
+    

GradientWidgetTest.py

@@ -0,0 +1,26 @@
+# -*- coding: utf-8 -*-
+
+from GradientWidget import *
+from PyQt4 import QtGui
+
+app = QtGui.QApplication([])
+w = QtGui.QMainWindow()
+w.show()
+w.resize(400,400)
+cw = QtGui.QWidget()
+w.setCentralWidget(cw)
+
+l = QtGui.QGridLayout()
+l.setSpacing(0)
+cw.setLayout(l)
+
+w1 = GradientWidget(orientation='top')
+w2 = GradientWidget(orientation='right', allowAdd=False)
+w2.setTickColor(1, QtGui.QColor(255,255,255))
+w3 = GradientWidget(orientation='bottom')
+w4 = TickSlider(orientation='left')
+
+l.addWidget(w1, 0, 1)
+l.addWidget(w2, 1, 2)
+l.addWidget(w3, 2, 1)
+l.addWidget(w4, 1, 0)

GraphicsView.py

@@ -10,11 +10,11 @@ from PyQt4 import QtCore, QtGui, QtOpenGL, QtSvg
 #import time
 from Point import *
 #from vector import *
-
+import sys
             
         
 class GraphicsView(QtGui.QGraphicsView):
-    def __init__(self, *args):
+    def __init__(self, parent=None, useOpenGL=True):
         """Re-implementation of QGraphicsView that removes scrollbars and allows unambiguous control of the 
         viewed coordinate range. Also automatically creates a QGraphicsScene and a central QGraphicsWidget
         that is automatically scaled to the full view geometry.
@@ -26,8 +26,9 @@ class GraphicsView(QtGui.QGraphicsView):
         The view can be panned using the middle mouse button and scaled using the right mouse button if
         enabled via enableMouse()."""
         
-        QtGui.QGraphicsView.__init__(self, *args)
-        self.setViewport(QtOpenGL.QGLWidget())
+        QtGui.QGraphicsView.__init__(self, parent)
+        self.useOpenGL(useOpenGL)
+        
         palette = QtGui.QPalette()
         brush = QtGui.QBrush(QtGui.QColor(0,0,0))
         brush.setStyle(QtCore.Qt.SolidPattern)
@@ -49,6 +50,7 @@ class GraphicsView(QtGui.QGraphicsView):
         #self.setResizeAnchor(QtGui.QGraphicsView.NoAnchor)
         self.setViewportUpdateMode(QtGui.QGraphicsView.SmartViewportUpdate)
         self.setSceneRect(QtCore.QRectF(-1e10, -1e10, 2e10, 2e10))
+        #self.setSceneRect(1, 1, 0, 0) ## Set an empty (but non-zero) scene rect so that the view doesn't try to automatically update for us.
         #self.setInteractive(False)
         self.lockedViewports = []
         self.lastMousePos = None
@@ -68,6 +70,18 @@ class GraphicsView(QtGui.QGraphicsView):
         self.scaleCenter = False  ## should scaling center around view center (True) or mouse click (False)
         self.clickAccepted = False
         
+    def useOpenGL(self, b=True):
+        if b:
+            v = QtOpenGL.QGLWidget()
+        else:
+            v = QtGui.QWidget()
+            
+        #v.setStyleSheet("background-color: #000000;")
+        self.setViewport(v)
+            
+    def keyPressEvent(self, ev):
+        ev.ignore()
+        
     def setCentralItem(self, item):
         if self.centralWidget is not None:
             self.scene().removeItem(self.centralWidget)
@@ -77,6 +91,9 @@ class GraphicsView(QtGui.QGraphicsView):
     def addItem(self, *args):
         return self.scene().addItem(*args)
         
+    def removeItem(self, *args):
+        return self.scene().removeItem(*args)
+        
     def enableMouse(self, b=True):
         self.mouseEnabled = b
         self.autoPixelRange = (not b)
@@ -128,6 +145,8 @@ class GraphicsView(QtGui.QGraphicsView):
                 v.setXRange(self.range, padding=0)
         
     def visibleRange(self):
+        """Return the boundaries of the view in scene coordinates"""
+        ## easier to just return self.range ?
         r = QtCore.QRectF(self.rect())
         return self.viewportTransform().inverted()[0].mapRect(r)
 
@@ -347,6 +366,16 @@ class GraphicsView(QtGui.QGraphicsView):
         self.setRenderHints(rh)
         self.png.save(fileName)
         
+    def writePs(self, fileName=None):
+        if fileName is None:
+            fileName = str(QtGui.QFileDialog.getSaveFileName())
+        printer = QtGui.QPrinter(QtGui.QPrinter.HighResolution)
+        printer.setOutputFileName(fileName)
+        painter = QtGui.QPainter(printer)
+        self.render(painter)
+        painter.end()
+        
+        
     #def getFreehandLine(self):
         
         ## Wait for click

ImageView.py

@@ -17,6 +17,11 @@ from ImageViewTemplate import *
 from graphicsItems import *
 from widgets import ROI
 from PyQt4 import QtCore, QtGui
+import sys
+from numpy import ndarray
+import ptime
+
+from SignalProxy import proxyConnect
 
 class PlotROI(ROI):
     def __init__(self, size):
@@ -35,12 +40,25 @@ class ImageView(QtGui.QWidget):
         self.ui = Ui_Form()
         self.ui.setupUi(self)
         self.scene = self.ui.graphicsView.sceneObj
+        
+        self.ignoreTimeLine = False
+        
+        if 'linux' in sys.platform.lower():   ## Stupid GL bug in linux.
+            self.ui.graphicsView.setViewport(QtGui.QWidget())
+        
         self.ui.graphicsView.enableMouse(True)
         self.ui.graphicsView.autoPixelRange = False
         self.ui.graphicsView.setAspectLocked(True)
         self.ui.graphicsView.invertY()
         self.ui.graphicsView.enableMouse()
         
+        self. ticks = [t[0] for t in self.ui.gradientWidget.listTicks()]
+        self.ticks[0].colorChangeAllowed = False
+        self.ticks[1].colorChangeAllowed = False
+        self.ui.gradientWidget.allowAdd = False
+        self.ui.gradientWidget.setTickColor(self.ticks[1], QtGui.QColor(255,255,255))
+        self.ui.gradientWidget.setOrientation('right')
+        
         self.imageItem = ImageItem()
         self.scene.addItem(self.imageItem)
         self.currentIndex = 0
@@ -51,26 +69,46 @@ class ImageView(QtGui.QWidget):
         self.roi.setZValue(20)
         self.scene.addItem(self.roi)
         self.roi.hide()
-        self.ui.roiPlot.hide()
+        self.normRoi = PlotROI(10)
+        self.normRoi.setPen(QtGui.QPen(QtGui.QColor(255,255,0)))
+        self.normRoi.setZValue(20)
+        self.scene.addItem(self.normRoi)
+        self.normRoi.hide()
+        #self.ui.roiPlot.hide()
         self.roiCurve = self.ui.roiPlot.plot()
-        self.roiTimeLine = InfiniteLine(self.ui.roiPlot, 0)
-        self.roiTimeLine.setPen(QtGui.QPen(QtGui.QColor(255, 255, 0, 200)))
-        self.ui.roiPlot.addItem(self.roiTimeLine)
+        self.timeLine = InfiniteLine(self.ui.roiPlot, 0, movable=True)
+        self.timeLine.setPen(QtGui.QPen(QtGui.QColor(255, 255, 0, 200)))
+        self.timeLine.setZValue(1)
+        self.ui.roiPlot.addItem(self.timeLine)
+        self.ui.splitter.setSizes([self.height()-35, 35])
+        self.ui.roiPlot.showScale('left', False)
         
-        self.normLines = []
-        for i in [0,1]:
-            l = InfiniteLine(self.ui.roiPlot, 0)
-            l.setPen(QtGui.QPen(QtGui.QColor(0, 100, 200, 200)))
-            self.ui.roiPlot.addItem(l)
-            self.normLines.append(l)
-            l.hide()
+        self.keysPressed = {}
+        self.playTimer = QtCore.QTimer()
+        self.playRate = 0
+        self.lastPlayTime = 0
         
-        for fn in ['addItem']:
+        #self.normLines = []
+        #for i in [0,1]:
+            #l = InfiniteLine(self.ui.roiPlot, 0)
+            #l.setPen(QtGui.QPen(QtGui.QColor(0, 100, 200, 200)))
+            #self.ui.roiPlot.addItem(l)
+            #self.normLines.append(l)
+            #l.hide()
+        self.normRgn = LinearRegionItem(self.ui.roiPlot, 'vertical')
+        self.normRgn.setZValue(0)
+        self.ui.roiPlot.addItem(self.normRgn)
+        self.normRgn.hide()
+            
+        ## wrap functions from graphics view
+        for fn in ['addItem', 'removeItem']:
             setattr(self, fn, getattr(self.ui.graphicsView, fn))
 
-        QtCore.QObject.connect(self.ui.timeSlider, QtCore.SIGNAL('valueChanged(int)'), self.timeChanged)
-        QtCore.QObject.connect(self.ui.whiteSlider, QtCore.SIGNAL('valueChanged(int)'), self.updateImage)
-        QtCore.QObject.connect(self.ui.blackSlider, QtCore.SIGNAL('valueChanged(int)'), self.updateImage)
+        #QtCore.QObject.connect(self.ui.timeSlider, QtCore.SIGNAL('valueChanged(int)'), self.timeChanged)
+        self.timeLine.connect(QtCore.SIGNAL('positionChanged'), self.timeLineChanged)
+        #QtCore.QObject.connect(self.ui.whiteSlider, QtCore.SIGNAL('valueChanged(int)'), self.updateImage)
+        #QtCore.QObject.connect(self.ui.blackSlider, QtCore.SIGNAL('valueChanged(int)'), self.updateImage)
+        QtCore.QObject.connect(self.ui.gradientWidget, QtCore.SIGNAL('gradientChanged'), self.updateImage)
         QtCore.QObject.connect(self.ui.roiBtn, QtCore.SIGNAL('clicked()'), self.roiClicked)
         self.roi.connect(QtCore.SIGNAL('regionChanged'), self.roiChanged)
         QtCore.QObject.connect(self.ui.normBtn, QtCore.SIGNAL('toggled(bool)'), self.normToggled)
@@ -80,37 +118,177 @@ class ImageView(QtGui.QWidget):
         QtCore.QObject.connect(self.ui.normROICheck, QtCore.SIGNAL('clicked()'), self.updateNorm)
         QtCore.QObject.connect(self.ui.normFrameCheck, QtCore.SIGNAL('clicked()'), self.updateNorm)
         QtCore.QObject.connect(self.ui.normTimeRangeCheck, QtCore.SIGNAL('clicked()'), self.updateNorm)
-        QtCore.QObject.connect(self.ui.normStartSlider, QtCore.SIGNAL('valueChanged(int)'), self.updateNorm)
-        QtCore.QObject.connect(self.ui.normStopSlider, QtCore.SIGNAL('valueChanged(int)'), self.updateNorm)
+        QtCore.QObject.connect(self.playTimer, QtCore.SIGNAL('timeout()'), self.timeout)
+        
+        ##QtCore.QObject.connect(self.ui.normStartSlider, QtCore.SIGNAL('valueChanged(int)'), self.updateNorm)
+        #QtCore.QObject.connect(self.ui.normStopSlider, QtCore.SIGNAL('valueChanged(int)'), self.updateNorm)
+        self.normProxy = proxyConnect(self.normRgn, QtCore.SIGNAL('regionChanged'), self.updateNorm)
+        self.normRoi.connect(QtCore.SIGNAL('regionChangeFinished'), self.updateNorm)
         
         self.ui.roiPlot.registerPlot(self.name + '_ROI')
         
-    def updateNorm(self):
-        for l, sl in zip(self.normLines, [self.ui.normStartSlider, self.ui.normStopSlider]):
-            if self.ui.normTimeRangeCheck.isChecked():
-                l.show()
+        self.noRepeatKeys = [QtCore.Qt.Key_Right, QtCore.Qt.Key_Left, QtCore.Qt.Key_Up, QtCore.Qt.Key_Down, QtCore.Qt.Key_PageUp, QtCore.Qt.Key_PageDown]
+
+    #def __dtor__(self):
+        ##print "Called ImageView sip destructor"
+        #self.quit()
+        #QtGui.QWidget.__dtor__(self)
+        
+    def quit(self):
+        self.scene.clear()
+        del self.image
+        del self.imageDisp
+        
+        
+    def keyPressEvent(self, ev):
+        if ev.key() == QtCore.Qt.Key_Space:
+            if self.playRate == 0:
+                fps = (self.getProcessedImage().shape[0]-1) / (self.tVals[-1] - self.tVals[0])
+                self.play(fps)
+                #print fps
             else:
-                l.hide()
+                self.play(0)
+            ev.accept()
+        elif ev.key() == QtCore.Qt.Key_Home:
+            self.setCurrentIndex(0)
+            self.play(0)
+            ev.accept()
+        elif ev.key() == QtCore.Qt.Key_End:
+            self.setCurrentIndex(self.getProcessedImage().shape[0]-1)
+            self.play(0)
+            ev.accept()
+        elif ev.key() in self.noRepeatKeys:
+            ev.accept()
+            if ev.isAutoRepeat():
+                return
+            self.keysPressed[ev.key()] = 1
+            self.evalKeyState()
+        else:
+            QtGui.QWidget.keyPressEvent(self, ev)
 
-            i, t = self.timeIndex(sl)
-            l.setPos(t)
+    def keyReleaseEvent(self, ev):
+        if ev.key() in [QtCore.Qt.Key_Space, QtCore.Qt.Key_Home, QtCore.Qt.Key_End]:
+            ev.accept()
+        elif ev.key() in self.noRepeatKeys:
+            ev.accept()
+            if ev.isAutoRepeat():
+                return
+            try:
+                del self.keysPressed[ev.key()]
+            except:
+                self.keysPressed = {}
+            self.evalKeyState()
+        else:
+            QtGui.QWidget.keyReleaseEvent(self, ev)
         
         
+    def evalKeyState(self):
+        if len(self.keysPressed) == 1:
+            key = self.keysPressed.keys()[0]
+            if key == QtCore.Qt.Key_Right:
+                self.play(20)
+                self.lastPlayTime = ptime.time() + 0.2  ## 2ms wait before start
+                self.jumpFrames(1)
+            elif key == QtCore.Qt.Key_Left:
+                self.play(-20)
+                self.lastPlayTime = ptime.time() + 0.2
+                self.jumpFrames(-1)
+            elif key == QtCore.Qt.Key_Up:
+                self.play(-100)
+            elif key == QtCore.Qt.Key_Down:
+                self.play(100)
+            elif key == QtCore.Qt.Key_PageUp:
+                self.play(-1000)
+            elif key == QtCore.Qt.Key_PageDown:
+                self.play(1000)
+        else:
+            self.play(0)
+        
+    def play(self, rate):
+        #print "play:", rate
+        self.playRate = rate
+        if rate == 0:
+            self.playTimer.stop()
+            return
+            
+        self.lastPlayTime = ptime.time()
+        if not self.playTimer.isActive():
+            self.playTimer.start(16)
+            
+        
+    def timeout(self):
+        now = ptime.time()
+        dt = now - self.lastPlayTime
+        if dt < 0:
+            return
+        n = int(self.playRate * dt)
+        #print n, dt
+        if n != 0:
+            #print n, dt, self.lastPlayTime
+            self.lastPlayTime += (float(n)/self.playRate)
+            if self.currentIndex+n > self.image.shape[0]:
+                self.play(0)
+            self.jumpFrames(n)
+        
+    def setCurrentIndex(self, ind):
+        self.currentIndex = clip(ind, 0, self.getProcessedImage().shape[0]-1)
+        self.updateImage()
+        self.ignoreTimeLine = True
+        self.timeLine.setValue(self.tVals[self.currentIndex])
+        self.ignoreTimeLine = False
+
+    def jumpFrames(self, n):
+        """If this is a video, move ahead n frames"""
+        if self.axes['t'] is not None:
+            self.setCurrentIndex(self.currentIndex + n)
+
+    def updateNorm(self):
+        #for l, sl in zip(self.normLines, [self.ui.normStartSlider, self.ui.normStopSlider]):
+            #if self.ui.normTimeRangeCheck.isChecked():
+                #l.show()
+            #else:
+                #l.hide()
+            
+            #i, t = self.timeIndex(sl)
+            #l.setPos(t)
+        
+        if self.ui.normTimeRangeCheck.isChecked():
+            #print "show!"
+            self.normRgn.show()
+        else:
+            self.normRgn.hide()
+        
+        if self.ui.normROICheck.isChecked():
+            #print "show!"
+            self.normRoi.show()
+        else:
+            self.normRoi.hide()
+        
         self.imageDisp = None
         self.updateImage()
         self.roiChanged()
 
     def normToggled(self, b):
         self.ui.normGroup.setVisible(b)
+        self.normRoi.setVisible(b and self.ui.normROICheck.isChecked())
+        self.normRgn.setVisible(b and self.ui.normTimeRangeCheck.isChecked())
 
     def roiClicked(self):
         if self.ui.roiBtn.isChecked():
             self.roi.show()
-            self.ui.roiPlot.show()
+            #self.ui.roiPlot.show()
+            self.ui.roiPlot.setMouseEnabled(True, True)
+            self.ui.splitter.setSizes([self.height()*0.6, self.height()*0.4])
+            self.roiCurve.show()
             self.roiChanged()
+            self.ui.roiPlot.showScale('left', True)
         else:
             self.roi.hide()
-            self.ui.roiPlot.hide()
+            self.ui.roiPlot.setMouseEnabled(False, False)
+            self.ui.roiPlot.setXRange(self.tVals.min(), self.tVals.max())
+            self.ui.splitter.setSizes([self.height()-35, 35])
+            self.roiCurve.hide()
+            self.ui.roiPlot.showScale('left', False)
 
     def roiChanged(self):
         if self.image is None:
@@ -130,25 +308,41 @@ class ImageView(QtGui.QWidget):
             self.roiCurve.setData(y=data, x=self.tVals)
             #self.ui.roiPlot.replot()
 
-    def setImage(self, img, autoRange=True, autoLevels=True, levels=None):
+    def setImage(self, img, autoRange=True, autoLevels=True, levels=None, axes=None, xvals=None):
+        """Set the image to be displayed in the widget.
+        Options are:
+          img:         ndarray; the image to be displayed.
+          autoRange:   bool; whether to scale/pan the view to fit the image.
+          autoLevels:  bool; whether to update the white/black levels to fit the image.
+          levels:      (min, max); the white and black level values to use.
+          axes:        {'t':0, 'x':1, 'y':2, 'c':3}; Dictionary indicating the interpretation for each axis.
+                       This is only needed to override the default guess.
+        """
+        
+        if not isinstance(img, ndarray):
+            raise Exception("Image must be specified as ndarray.")
         self.image = img
-        if hasattr(img, 'xvals'):
+        
+        if xvals is not None:
+            self.tVals = xvals
+        elif hasattr(img, 'xvals'):
             self.tVals = img.xvals(0)
         else:
             self.tVals = arange(img.shape[0])
-        self.ui.timeSlider.setValue(0)
+        #self.ui.timeSlider.setValue(0)
         #self.ui.normStartSlider.setValue(0)
         #self.ui.timeSlider.setMaximum(img.shape[0]-1)
         
-        if img.ndim == 2:
-            self.axes = {'t': None, 'x': 0, 'y': 1, 'c': None}
-        elif img.ndim == 3:
-            if img.shape[2] <= 3:
-                self.axes = {'t': None, 'x': 0, 'y': 1, 'c': 2}
-            else:
-                self.axes = {'t': 0, 'x': 1, 'y': 2, 'c': None}
-        elif img.ndim == 4:
-            self.axes = {'t': 0, 'x': 1, 'y': 2, 'c': 3}
+        if axes is None:
+            if img.ndim == 2:
+                self.axes = {'t': None, 'x': 0, 'y': 1, 'c': None}
+            elif img.ndim == 3:
+                if img.shape[2] <= 4:
+                    self.axes = {'t': None, 'x': 0, 'y': 1, 'c': 2}
+                else:
+                    self.axes = {'t': 0, 'x': 1, 'y': 2, 'c': None}
+            elif img.ndim == 4:
+                self.axes = {'t': 0, 'x': 1, 'y': 2, 'c': 3}
 
             
         self.imageDisp = None
@@ -163,11 +357,36 @@ class ImageView(QtGui.QWidget):
         if self.ui.roiBtn.isChecked():
             self.roiChanged()
             
+            
+        if self.axes['t'] is not None:
+            #self.ui.roiPlot.show()
+            self.ui.roiPlot.setXRange(self.tVals.min(), self.tVals.max())
+            #self.ui.roiPlot.setMouseEnabled(False, False)
+            if len(self.tVals) > 1:
+                start = self.tVals.min()
+                stop = self.tVals.max() + abs(self.tVals[-1] - self.tVals[0]) * 0.02
+            elif len(self.tVals) == 1:
+                start = self.tVals[0] - 0.5
+                stop = self.tVals[0] + 0.5
+            else:
+                start = 0
+                stop = 1
+            for s in [self.timeLine, self.normRgn]:
+                s.setBounds([start, stop])
+        #else:
+            #self.ui.roiPlot.hide()
+            
+        self.roiClicked()
+            
+            
     def autoLevels(self):
         image = self.getProcessedImage()
         
-        self.ui.whiteSlider.setValue(self.ui.whiteSlider.maximum())
-        self.ui.blackSlider.setValue(0)
+        #self.ui.whiteSlider.setValue(self.ui.whiteSlider.maximum())
+        #self.ui.blackSlider.setValue(0)
+        
+        self.ui.gradientWidget.setTickValue(self.ticks[0], 0.0)
+        self.ui.gradientWidget.setTickValue(self.ticks[1], 1.0)
         self.imageItem.setLevels(white=self.whiteLevel(), black=self.blackLevel())
             
     def autoRange(self):
@@ -189,7 +408,7 @@ class ImageView(QtGui.QWidget):
             return image
             
         div = self.ui.normDivideRadio.isChecked()
-        norm = image.copy()
+        norm = image.view(ndarray).copy()
         #if div:
             #norm = ones(image.shape)
         #else:
@@ -198,8 +417,8 @@ class ImageView(QtGui.QWidget):
             norm = norm.astype(float32)
             
         if self.ui.normTimeRangeCheck.isChecked() and image.ndim == 3:
-            (sind, start) = self.timeIndex(self.ui.normStartSlider)
-            (eind, end) = self.timeIndex(self.ui.normStopSlider)
+            (sind, start) = self.timeIndex(self.normRgn.lines[0])
+            (eind, end) = self.timeIndex(self.normRgn.lines[1])
             #print start, end, sind, eind
             n = image[sind:eind+1].mean(axis=0)
             n.shape = (1,) + n.shape
@@ -216,17 +435,27 @@ class ImageView(QtGui.QWidget):
             else:
                 norm -= n
             
+        if self.ui.normROICheck.isChecked() and image.ndim == 3:
+            n = self.normRoi.getArrayRegion(norm, self.imageItem, (1, 2)).mean(axis=1).mean(axis=1)
+            n = n[:,newaxis,newaxis]
+            #print start, end, sind, eind
+            if div:
+                norm /= n
+            else:
+                norm -= n
+                
         return norm
         
-        
-        
-    def timeChanged(self):
-        (ind, time) = self.timeIndex(self.ui.timeSlider)
+    def timeLineChanged(self):
+        #(ind, time) = self.timeIndex(self.ui.timeSlider)
+        if self.ignoreTimeLine:
+            return
+        self.play(0)
+        (ind, time) = self.timeIndex(self.timeLine)
         if ind != self.currentIndex:
             self.currentIndex = ind
             self.updateImage()
-        self.roiTimeLine.setPos(time)
-        #self.ui.roiPlot.replot()
+        #self.timeLine.setPos(time)
         self.emit(QtCore.SIGNAL('timeChanged'), ind, time)
 
     def updateImage(self):
@@ -237,29 +466,38 @@ class ImageView(QtGui.QWidget):
         image = self.getProcessedImage()
         #print "update:", image.ndim, image.max(), image.min(), self.blackLevel(), self.whiteLevel()
         if self.axes['t'] is None:
-            self.ui.timeSlider.hide()
+            #self.ui.timeSlider.hide()
             self.imageItem.updateImage(image, white=self.whiteLevel(), black=self.blackLevel())
+            self.ui.roiPlot.hide()
+            self.ui.roiBtn.hide()
         else:
-            self.ui.timeSlider.show()
+            self.ui.roiBtn.show()
+            self.ui.roiPlot.show()
+            #self.ui.timeSlider.show()
             self.imageItem.updateImage(image[self.currentIndex], white=self.whiteLevel(), black=self.blackLevel())
             
+            
     def timeIndex(self, slider):
         """Return the time and frame index indicated by a slider"""
         if self.image is None:
             return (0,0)
-        v = slider.value()
-        vmax = slider.maximum()
-        f = float(v) / vmax
-        t = 0.0
+        #v = slider.value()
+        #vmax = slider.maximum()
+        #f = float(v) / vmax
+        
+        t = slider.value()
+        
+        #t = 0.0
         #xv = self.image.xvals('Time') 
         xv = self.tVals
         if xv is None:
-            ind = int(f * self.image.shape[0])
+            ind = int(t)
+            #ind = int(f * self.image.shape[0])
         else:
             if len(xv) < 2:
                 return (0,0)
             totTime = xv[-1] + (xv[-1]-xv[-2])
-            t = f * totTime
+            #t = f * totTime
             inds = argwhere(xv < t)
             if len(inds) < 1:
                 return (0,t)
@@ -268,8 +506,10 @@ class ImageView(QtGui.QWidget):
         return ind, t
 
     def whiteLevel(self):
-        return self.levelMin + (self.levelMax-self.levelMin) * self.ui.whiteSlider.value() / self.ui.whiteSlider.maximum() 
+        return self.levelMin + (self.levelMax-self.levelMin) * self.ui.gradientWidget.tickValue(self.ticks[1])
+        #return self.levelMin + (self.levelMax-self.levelMin) * self.ui.whiteSlider.value() / self.ui.whiteSlider.maximum() 
     
     def blackLevel(self):
-        return self.levelMin + ((self.levelMax-self.levelMin) / self.ui.blackSlider.maximum()) * self.ui.blackSlider.value()
+        return self.levelMin + (self.levelMax-self.levelMin) * self.ui.gradientWidget.tickValue(self.ticks[0])
+        #return self.levelMin + ((self.levelMax-self.levelMin) / self.ui.blackSlider.maximum()) * self.ui.blackSlider.value()
         

ImageViewTemplate.py

@@ -2,8 +2,8 @@
 
 # Form implementation generated from reading ui file 'ImageViewTemplate.ui'
 #
-# Created: Mon Mar 29 22:40:48 2010
-#      by: PyQt4 UI code generator 4.6
+# Created: Sat Jul 17 13:05:44 2010
+#      by: PyQt4 UI code generator 4.5.4
 #
 # WARNING! All changes made in this file will be lost!
 
@@ -12,7 +12,7 @@ from PyQt4 import QtCore, QtGui
 class Ui_Form(object):
     def setupUi(self, Form):
         Form.setObjectName("Form")
-        Form.resize(757, 495)
+        Form.resize(726, 588)
         self.verticalLayout = QtGui.QVBoxLayout(Form)
         self.verticalLayout.setSpacing(0)
         self.verticalLayout.setMargin(0)
@@ -23,52 +23,45 @@ class Ui_Form(object):
         self.layoutWidget = QtGui.QWidget(self.splitter)
         self.layoutWidget.setObjectName("layoutWidget")
         self.gridLayout = QtGui.QGridLayout(self.layoutWidget)
+        self.gridLayout.setMargin(0)
         self.gridLayout.setSpacing(0)
         self.gridLayout.setObjectName("gridLayout")
         self.graphicsView = GraphicsView(self.layoutWidget)
         sizePolicy = QtGui.QSizePolicy(QtGui.QSizePolicy.Expanding, QtGui.QSizePolicy.Expanding)
-        sizePolicy.setHorizontalStretch(0)
-        sizePolicy.setVerticalStretch(0)
+        sizePolicy.setHorizontalStretch(10)
+        sizePolicy.setVerticalStretch(10)
         sizePolicy.setHeightForWidth(self.graphicsView.sizePolicy().hasHeightForWidth())
         self.graphicsView.setSizePolicy(sizePolicy)
         self.graphicsView.setObjectName("graphicsView")
-        self.gridLayout.addWidget(self.graphicsView, 0, 0, 3, 1)
-        self.blackSlider = QtGui.QSlider(self.layoutWidget)
-        self.blackSlider.setMaximum(4096)
-        self.blackSlider.setOrientation(QtCore.Qt.Vertical)
-        self.blackSlider.setInvertedAppearance(False)
-        self.blackSlider.setInvertedControls(False)
-        self.blackSlider.setTickPosition(QtGui.QSlider.TicksBelow)
-        self.blackSlider.setTickInterval(410)
-        self.blackSlider.setObjectName("blackSlider")
-        self.gridLayout.addWidget(self.blackSlider, 0, 1, 1, 1)
-        self.whiteSlider = QtGui.QSlider(self.layoutWidget)
-        self.whiteSlider.setMaximum(4096)
-        self.whiteSlider.setProperty("value", 4096)
-        self.whiteSlider.setOrientation(QtCore.Qt.Vertical)
-        self.whiteSlider.setObjectName("whiteSlider")
-        self.gridLayout.addWidget(self.whiteSlider, 0, 2, 1, 2)
-        self.label = QtGui.QLabel(self.layoutWidget)
-        self.label.setObjectName("label")
-        self.gridLayout.addWidget(self.label, 1, 1, 1, 1)
-        self.label_2 = QtGui.QLabel(self.layoutWidget)
-        self.label_2.setObjectName("label_2")
-        self.gridLayout.addWidget(self.label_2, 1, 2, 1, 1)
+        self.gridLayout.addWidget(self.graphicsView, 1, 0, 3, 1)
         self.roiBtn = QtGui.QPushButton(self.layoutWidget)
-        self.roiBtn.setMaximumSize(QtCore.QSize(40, 16777215))
+        sizePolicy = QtGui.QSizePolicy(QtGui.QSizePolicy.Minimum, QtGui.QSizePolicy.Fixed)
+        sizePolicy.setHorizontalStretch(0)
+        sizePolicy.setVerticalStretch(1)
+        sizePolicy.setHeightForWidth(self.roiBtn.sizePolicy().hasHeightForWidth())
+        self.roiBtn.setSizePolicy(sizePolicy)
+        self.roiBtn.setMaximumSize(QtCore.QSize(30, 16777215))
         self.roiBtn.setCheckable(True)
         self.roiBtn.setObjectName("roiBtn")
-        self.gridLayout.addWidget(self.roiBtn, 2, 1, 1, 3)
-        self.timeSlider = QtGui.QSlider(self.layoutWidget)
-        self.timeSlider.setMaximum(65535)
-        self.timeSlider.setOrientation(QtCore.Qt.Horizontal)
-        self.timeSlider.setObjectName("timeSlider")
-        self.gridLayout.addWidget(self.timeSlider, 4, 0, 1, 1)
+        self.gridLayout.addWidget(self.roiBtn, 3, 3, 1, 1)
+        self.gradientWidget = GradientWidget(self.layoutWidget)
+        sizePolicy = QtGui.QSizePolicy(QtGui.QSizePolicy.Preferred, QtGui.QSizePolicy.Expanding)
+        sizePolicy.setHorizontalStretch(0)
+        sizePolicy.setVerticalStretch(100)
+        sizePolicy.setHeightForWidth(self.gradientWidget.sizePolicy().hasHeightForWidth())
+        self.gradientWidget.setSizePolicy(sizePolicy)
+        self.gradientWidget.setObjectName("gradientWidget")
+        self.gridLayout.addWidget(self.gradientWidget, 1, 3, 1, 1)
         self.normBtn = QtGui.QPushButton(self.layoutWidget)
-        self.normBtn.setMaximumSize(QtCore.QSize(50, 16777215))
+        sizePolicy = QtGui.QSizePolicy(QtGui.QSizePolicy.Minimum, QtGui.QSizePolicy.Fixed)
+        sizePolicy.setHorizontalStretch(0)
+        sizePolicy.setVerticalStretch(1)
+        sizePolicy.setHeightForWidth(self.normBtn.sizePolicy().hasHeightForWidth())
+        self.normBtn.setSizePolicy(sizePolicy)
+        self.normBtn.setMaximumSize(QtCore.QSize(30, 16777215))
         self.normBtn.setCheckable(True)
         self.normBtn.setObjectName("normBtn")
-        self.gridLayout.addWidget(self.normBtn, 4, 1, 1, 2)
+        self.gridLayout.addWidget(self.normBtn, 2, 3, 1, 1)
         self.normGroup = QtGui.QGroupBox(self.layoutWidget)
         self.normGroup.setObjectName("normGroup")
         self.gridLayout_2 = QtGui.QGridLayout(self.normGroup)
@@ -102,44 +95,28 @@ class Ui_Form(object):
         font.setBold(True)
         self.label_4.setFont(font)
         self.label_4.setObjectName("label_4")
-        self.gridLayout_2.addWidget(self.label_4, 4, 0, 1, 1)
+        self.gridLayout_2.addWidget(self.label_4, 2, 0, 1, 1)
         self.normROICheck = QtGui.QCheckBox(self.normGroup)
         self.normROICheck.setObjectName("normROICheck")
         self.gridLayout_2.addWidget(self.normROICheck, 1, 1, 1, 1)
-        self.normStartSlider = QtGui.QSlider(self.normGroup)
-        self.normStartSlider.setMaximum(65535)
-        self.normStartSlider.setOrientation(QtCore.Qt.Horizontal)
-        self.normStartSlider.setObjectName("normStartSlider")
-        self.gridLayout_2.addWidget(self.normStartSlider, 2, 0, 1, 6)
-        self.normStopSlider = QtGui.QSlider(self.normGroup)
-        self.normStopSlider.setMaximum(65535)
-        self.normStopSlider.setOrientation(QtCore.Qt.Horizontal)
-        self.normStopSlider.setObjectName("normStopSlider")
-        self.gridLayout_2.addWidget(self.normStopSlider, 3, 0, 1, 6)
         self.normXBlurSpin = QtGui.QDoubleSpinBox(self.normGroup)
         self.normXBlurSpin.setObjectName("normXBlurSpin")
-        self.gridLayout_2.addWidget(self.normXBlurSpin, 4, 2, 1, 1)
+        self.gridLayout_2.addWidget(self.normXBlurSpin, 2, 2, 1, 1)
         self.label_8 = QtGui.QLabel(self.normGroup)
         self.label_8.setAlignment(QtCore.Qt.AlignRight|QtCore.Qt.AlignTrailing|QtCore.Qt.AlignVCenter)
         self.label_8.setObjectName("label_8")
-        self.gridLayout_2.addWidget(self.label_8, 4, 1, 1, 1)
+        self.gridLayout_2.addWidget(self.label_8, 2, 1, 1, 1)
         self.label_9 = QtGui.QLabel(self.normGroup)
         self.label_9.setAlignment(QtCore.Qt.AlignRight|QtCore.Qt.AlignTrailing|QtCore.Qt.AlignVCenter)
         self.label_9.setObjectName("label_9")
-        self.gridLayout_2.addWidget(self.label_9, 4, 3, 1, 1)
+        self.gridLayout_2.addWidget(self.label_9, 2, 3, 1, 1)
         self.normYBlurSpin = QtGui.QDoubleSpinBox(self.normGroup)
         self.normYBlurSpin.setObjectName("normYBlurSpin")
-        self.gridLayout_2.addWidget(self.normYBlurSpin, 4, 4, 1, 1)
+        self.gridLayout_2.addWidget(self.normYBlurSpin, 2, 4, 1, 1)
         self.label_10 = QtGui.QLabel(self.normGroup)
         self.label_10.setAlignment(QtCore.Qt.AlignRight|QtCore.Qt.AlignTrailing|QtCore.Qt.AlignVCenter)
         self.label_10.setObjectName("label_10")
-        self.gridLayout_2.addWidget(self.label_10, 4, 5, 1, 1)
-        self.normStopLabel = QtGui.QLabel(self.normGroup)
-        self.normStopLabel.setObjectName("normStopLabel")
-        self.gridLayout_2.addWidget(self.normStopLabel, 3, 6, 1, 1)
-        self.normStartLabel = QtGui.QLabel(self.normGroup)
-        self.normStartLabel.setObjectName("normStartLabel")
-        self.gridLayout_2.addWidget(self.normStartLabel, 2, 6, 1, 1)
+        self.gridLayout_2.addWidget(self.label_10, 2, 5, 1, 1)
         self.normOffRadio = QtGui.QRadioButton(self.normGroup)
         self.normOffRadio.setChecked(True)
         self.normOffRadio.setObjectName("normOffRadio")
@@ -152,9 +129,14 @@ class Ui_Form(object):
         self.gridLayout_2.addWidget(self.normFrameCheck, 1, 2, 1, 1)
         self.normTBlurSpin = QtGui.QDoubleSpinBox(self.normGroup)
         self.normTBlurSpin.setObjectName("normTBlurSpin")
-        self.gridLayout_2.addWidget(self.normTBlurSpin, 4, 6, 1, 1)
-        self.gridLayout.addWidget(self.normGroup, 5, 0, 1, 4)
+        self.gridLayout_2.addWidget(self.normTBlurSpin, 2, 6, 1, 1)
+        self.gridLayout.addWidget(self.normGroup, 0, 0, 1, 4)
         self.roiPlot = PlotWidget(self.splitter)
+        sizePolicy = QtGui.QSizePolicy(QtGui.QSizePolicy.Preferred, QtGui.QSizePolicy.Preferred)
+        sizePolicy.setHorizontalStretch(0)
+        sizePolicy.setVerticalStretch(0)
+        sizePolicy.setHeightForWidth(self.roiPlot.sizePolicy().hasHeightForWidth())
+        self.roiPlot.setSizePolicy(sizePolicy)
         self.roiPlot.setMinimumSize(QtCore.QSize(0, 40))
         self.roiPlot.setObjectName("roiPlot")
         self.verticalLayout.addWidget(self.splitter)
@@ -164,10 +146,8 @@ class Ui_Form(object):
 
     def retranslateUi(self, Form):
         Form.setWindowTitle(QtGui.QApplication.translate("Form", "Form", None, QtGui.QApplication.UnicodeUTF8))
-        self.label.setText(QtGui.QApplication.translate("Form", "B", None, QtGui.QApplication.UnicodeUTF8))
-        self.label_2.setText(QtGui.QApplication.translate("Form", "W", None, QtGui.QApplication.UnicodeUTF8))
-        self.roiBtn.setText(QtGui.QApplication.translate("Form", "ROI", None, QtGui.QApplication.UnicodeUTF8))
-        self.normBtn.setText(QtGui.QApplication.translate("Form", "Norm", None, QtGui.QApplication.UnicodeUTF8))
+        self.roiBtn.setText(QtGui.QApplication.translate("Form", "R", None, QtGui.QApplication.UnicodeUTF8))
+        self.normBtn.setText(QtGui.QApplication.translate("Form", "N", None, QtGui.QApplication.UnicodeUTF8))
         self.normGroup.setTitle(QtGui.QApplication.translate("Form", "Normalization", None, QtGui.QApplication.UnicodeUTF8))
         self.normSubtractRadio.setText(QtGui.QApplication.translate("Form", "Subtract", None, QtGui.QApplication.UnicodeUTF8))
         self.normDivideRadio.setText(QtGui.QApplication.translate("Form", "Divide", None, QtGui.QApplication.UnicodeUTF8))
@@ -178,11 +158,10 @@ class Ui_Form(object):
         self.label_8.setText(QtGui.QApplication.translate("Form", "X", None, QtGui.QApplication.UnicodeUTF8))
         self.label_9.setText(QtGui.QApplication.translate("Form", "Y", None, QtGui.QApplication.UnicodeUTF8))
         self.label_10.setText(QtGui.QApplication.translate("Form", "T", None, QtGui.QApplication.UnicodeUTF8))
-        self.normStopLabel.setText(QtGui.QApplication.translate("Form", "Stop", None, QtGui.QApplication.UnicodeUTF8))
-        self.normStartLabel.setText(QtGui.QApplication.translate("Form", "Start", None, QtGui.QApplication.UnicodeUTF8))
         self.normOffRadio.setText(QtGui.QApplication.translate("Form", "Off", None, QtGui.QApplication.UnicodeUTF8))
         self.normTimeRangeCheck.setText(QtGui.QApplication.translate("Form", "Time range", None, QtGui.QApplication.UnicodeUTF8))
         self.normFrameCheck.setText(QtGui.QApplication.translate("Form", "Frame", None, QtGui.QApplication.UnicodeUTF8))
 
 from GraphicsView import GraphicsView
+from pyqtgraph.GradientWidget import GradientWidget
 from PlotWidget import PlotWidget

ImageViewTemplate.ui

@@ -6,8 +6,8 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>757</width>
-    <height>495</height>
+    <width>726</width>
+    <height>588</height>
    </rect>
   </property>
   <property name="windowTitle">
@@ -27,113 +27,77 @@
      </property>
      <widget class="QWidget" name="layoutWidget">
       <layout class="QGridLayout" name="gridLayout">
+       <property name="margin">
+        <number>0</number>
+       </property>
        <property name="spacing">
         <number>0</number>
        </property>
-       <item row="0" column="0" rowspan="3">
+       <item row="1" column="0" rowspan="3">
         <widget class="GraphicsView" name="graphicsView" native="true">
          <property name="sizePolicy">
           <sizepolicy hsizetype="Expanding" vsizetype="Expanding">
-           <horstretch>0</horstretch>
-           <verstretch>0</verstretch>
+           <horstretch>10</horstretch>
+           <verstretch>10</verstretch>
           </sizepolicy>
          </property>
-         <zorder>normGroup</zorder>
-         <zorder>normGroup</zorder>
         </widget>
        </item>
-       <item row="0" column="1">
-        <widget class="QSlider" name="blackSlider">
-         <property name="maximum">
-          <number>4096</number>
-         </property>
-         <property name="orientation">
-          <enum>Qt::Vertical</enum>
-         </property>
-         <property name="invertedAppearance">
-          <bool>false</bool>
-         </property>
-         <property name="invertedControls">
-          <bool>false</bool>
-         </property>
-         <property name="tickPosition">
-          <enum>QSlider::TicksBelow</enum>
-         </property>
-         <property name="tickInterval">
-          <number>410</number>
-         </property>
-        </widget>
-       </item>
-       <item row="0" column="2" colspan="2">
-        <widget class="QSlider" name="whiteSlider">
-         <property name="maximum">
-          <number>4096</number>
-         </property>
-         <property name="value">
-          <number>4096</number>
-         </property>
-         <property name="orientation">
-          <enum>Qt::Vertical</enum>
-         </property>
-        </widget>
-       </item>
-       <item row="1" column="1">
-        <widget class="QLabel" name="label">
-         <property name="text">
-          <string>B</string>
-         </property>
-        </widget>
-       </item>
-       <item row="1" column="2">
-        <widget class="QLabel" name="label_2">
-         <property name="text">
-          <string>W</string>
-         </property>
-        </widget>
-       </item>
-       <item row="2" column="1" colspan="3">
+       <item row="3" column="3">
         <widget class="QPushButton" name="roiBtn">
+         <property name="sizePolicy">
+          <sizepolicy hsizetype="Minimum" vsizetype="Fixed">
+           <horstretch>0</horstretch>
+           <verstretch>1</verstretch>
+          </sizepolicy>
+         </property>
          <property name="maximumSize">
           <size>
-           <width>40</width>
+           <width>30</width>
            <height>16777215</height>
           </size>
          </property>
          <property name="text">
-          <string>ROI</string>
+          <string>R</string>
          </property>
          <property name="checkable">
           <bool>true</bool>
          </property>
         </widget>
        </item>
-       <item row="4" column="0">
-        <widget class="QSlider" name="timeSlider">
-         <property name="maximum">
-          <number>65535</number>
-         </property>
-         <property name="orientation">
-          <enum>Qt::Horizontal</enum>
+       <item row="1" column="3">
+        <widget class="GradientWidget" name="gradientWidget" native="true">
+         <property name="sizePolicy">
+          <sizepolicy hsizetype="Preferred" vsizetype="Expanding">
+           <horstretch>0</horstretch>
+           <verstretch>100</verstretch>
+          </sizepolicy>
          </property>
         </widget>
        </item>
-       <item row="4" column="1" colspan="2">
+       <item row="2" column="3">
         <widget class="QPushButton" name="normBtn">
+         <property name="sizePolicy">
+          <sizepolicy hsizetype="Minimum" vsizetype="Fixed">
+           <horstretch>0</horstretch>
+           <verstretch>1</verstretch>
+          </sizepolicy>
+         </property>
          <property name="maximumSize">
           <size>
-           <width>50</width>
+           <width>30</width>
            <height>16777215</height>
           </size>
          </property>
          <property name="text">
-          <string>Norm</string>
+          <string>N</string>
          </property>
          <property name="checkable">
           <bool>true</bool>
          </property>
         </widget>
        </item>
-       <item row="5" column="0" colspan="4">
+       <item row="0" column="0" colspan="4">
         <widget class="QGroupBox" name="normGroup">
          <property name="title">
           <string>Normalization</string>
@@ -188,7 +152,7 @@
             </property>
            </widget>
           </item>
-          <item row="4" column="0">
+          <item row="2" column="0">
            <widget class="QLabel" name="label_4">
             <property name="font">
              <font>
@@ -208,30 +172,10 @@
             </property>
            </widget>
           </item>
-          <item row="2" column="0" colspan="6">
-           <widget class="QSlider" name="normStartSlider">
-            <property name="maximum">
-             <number>65535</number>
-            </property>
-            <property name="orientation">
-             <enum>Qt::Horizontal</enum>
-            </property>
-           </widget>
-          </item>
-          <item row="3" column="0" colspan="6">
-           <widget class="QSlider" name="normStopSlider">
-            <property name="maximum">
-             <number>65535</number>
-            </property>
-            <property name="orientation">
-             <enum>Qt::Horizontal</enum>
-            </property>
-           </widget>
-          </item>
-          <item row="4" column="2">
+          <item row="2" column="2">
            <widget class="QDoubleSpinBox" name="normXBlurSpin"/>
           </item>
-          <item row="4" column="1">
+          <item row="2" column="1">
            <widget class="QLabel" name="label_8">
             <property name="text">
              <string>X</string>
@@ -241,7 +185,7 @@
             </property>
            </widget>
           </item>
-          <item row="4" column="3">
+          <item row="2" column="3">
            <widget class="QLabel" name="label_9">
             <property name="text">
              <string>Y</string>
@@ -251,10 +195,10 @@
             </property>
            </widget>
           </item>
-          <item row="4" column="4">
+          <item row="2" column="4">
            <widget class="QDoubleSpinBox" name="normYBlurSpin"/>
           </item>
-          <item row="4" column="5">
+          <item row="2" column="5">
            <widget class="QLabel" name="label_10">
             <property name="text">
              <string>T</string>
@@ -264,20 +208,6 @@
             </property>
            </widget>
           </item>
-          <item row="3" column="6">
-           <widget class="QLabel" name="normStopLabel">
-            <property name="text">
-             <string>Stop</string>
-            </property>
-           </widget>
-          </item>
-          <item row="2" column="6">
-           <widget class="QLabel" name="normStartLabel">
-            <property name="text">
-             <string>Start</string>
-            </property>
-           </widget>
-          </item>
           <item row="0" column="3">
            <widget class="QRadioButton" name="normOffRadio">
             <property name="text">
@@ -302,7 +232,7 @@
             </property>
            </widget>
           </item>
-          <item row="4" column="6">
+          <item row="2" column="6">
            <widget class="QDoubleSpinBox" name="normTBlurSpin"/>
           </item>
          </layout>
@@ -311,6 +241,12 @@
       </layout>
      </widget>
      <widget class="PlotWidget" name="roiPlot" native="true">
+      <property name="sizePolicy">
+       <sizepolicy hsizetype="Preferred" vsizetype="Preferred">
+        <horstretch>0</horstretch>
+        <verstretch>0</verstretch>
+       </sizepolicy>
+      </property>
       <property name="minimumSize">
        <size>
         <width>0</width>
@@ -323,6 +259,12 @@
   </layout>
  </widget>
  <customwidgets>
+  <customwidget>
+   <class>GradientWidget</class>
+   <extends>QWidget</extends>
+   <header>pyqtgraph.GradientWidget</header>
+   <container>1</container>
+  </customwidget>
   <customwidget>
    <class>GraphicsView</class>
    <extends>QWidget</extends>

ObjectWorkaround.py

@@ -0,0 +1,22 @@
+# -*- coding: utf-8 -*-
+from PyQt4 import QtGui, QtCore
+
+class QObjectWorkaround:
+    def __init__(self):
+        self._qObj_ = QtCore.QObject()
+    def connect(self, *args):
+        if args[0] is self:
+            return QtCore.QObject.connect(self._qObj_, *args[1:])
+        else:
+            return QtCore.QObject.connect(self._qObj_, *args)
+    def disconnect(self, *args):
+        return QtCore.QObject.disconnect(self._qObj_, *args)
+    def emit(self, *args):
+        return QtCore.QObject.emit(self._qObj_, *args)
+    def blockSignals(self, b):
+        return self._qObj_.blockSignals(b)
+        
+class QGraphicsObject(QtGui.QGraphicsItem, QObjectWorkaround):
+    def __init__(self, *args):
+        QtGui.QGraphicsItem.__init__(self, *args)
+        QObjectWorkaround.__init__(self)

PlotItem.py

@@ -20,6 +20,8 @@ This class is very heavily featured:
 from graphicsItems import *
 from plotConfigTemplate import *
 from PyQt4 import QtGui, QtCore, QtSvg
+#from ObjectWorkaround import *
+#tryWorkaround(QtCore, QtGui)
 import weakref
 
 try:
@@ -42,7 +44,7 @@ class PlotItem(QtGui.QGraphicsWidget):
     lastFileDir = None
     managers = {}
     
-    def __init__(self, parent=None):
+    def __init__(self, parent=None, name=None):
         QtGui.QGraphicsWidget.__init__(self, parent)
         
         ## Set up control buttons
@@ -56,6 +58,7 @@ class PlotItem(QtGui.QGraphicsWidget):
         for b in [self.ctrlBtn, self.autoBtn]:
             proxy = QtGui.QGraphicsProxyWidget(self)
             proxy.setWidget(b)
+            proxy.setAcceptHoverEvents(False)
             b.setStyleSheet("background-color: #000000; color: #888; font-size: 6pt")
         QtCore.QObject.connect(self.ctrlBtn, QtCore.SIGNAL('clicked()'), self.ctrlBtnClicked)
         QtCore.QObject.connect(self.autoBtn, QtCore.SIGNAL('clicked()'), self.enableAutoScale)
@@ -124,7 +127,7 @@ class PlotItem(QtGui.QGraphicsWidget):
         
 
         ## Wrap a few methods from viewBox
-        for m in ['setXRange', 'setYRange', 'setRange', 'autoRange', 'viewRect']:
+        for m in ['setXRange', 'setYRange', 'setRange', 'autoRange', 'viewRect', 'setMouseEnabled']:
             setattr(self, m, getattr(self.vb, m))
             
         self.items = []
@@ -178,9 +181,13 @@ class PlotItem(QtGui.QGraphicsWidget):
         QtCore.QObject.connect(c.alphaSlider, QtCore.SIGNAL('valueChanged(int)'), self.updateAlpha)
         QtCore.QObject.connect(c.autoAlphaCheck, QtCore.SIGNAL('toggled(bool)'), self.updateAlpha)
 
+        QtCore.QObject.connect(c.gridGroup, QtCore.SIGNAL('toggled(bool)'), self.updateGrid)
+        QtCore.QObject.connect(c.gridAlphaSlider, QtCore.SIGNAL('valueChanged(int)'), self.updateGrid)
+
         QtCore.QObject.connect(c.powerSpectrumGroup, QtCore.SIGNAL('toggled(bool)'), self.updateSpectrumMode)
         QtCore.QObject.connect(c.saveSvgBtn, QtCore.SIGNAL('clicked()'), self.saveSvgClicked)
         QtCore.QObject.connect(c.saveImgBtn, QtCore.SIGNAL('clicked()'), self.saveImgClicked)
+        QtCore.QObject.connect(c.saveCsvBtn, QtCore.SIGNAL('clicked()'), self.saveCsvClicked)
         
         #QtCore.QObject.connect(c.gridGroup, QtCore.SIGNAL('toggled(bool)'), self.updateGrid)
         #QtCore.QObject.connect(c.gridAlphaSlider, QtCore.SIGNAL('valueChanged(int)'), self.updateGrid)
@@ -216,6 +223,10 @@ class PlotItem(QtGui.QGraphicsWidget):
         self.showScale('left', True)
         self.showScale('bottom', True)
         
+        if name is not None:
+            self.registerPlot(name)
+        
+            
     def __del__(self):
         if self.manager is not None:
             self.manager.removeWidget(self.name)
@@ -251,6 +262,13 @@ class PlotItem(QtGui.QGraphicsWidget):
             print "  error during update. Referrers are:", refs
             raise
         
+    def updateGrid(self, *args):
+        g = self.ctrl.gridGroup.isChecked()
+        if g:
+            g = self.ctrl.gridAlphaSlider.value()
+        for k in self.scales:
+            self.scales[k]['item'].setGrid(g)
+
     def viewGeometry(self):
         """return the screen geometry of the viewbox"""
         v = self.scene().views()[0]
@@ -261,6 +279,8 @@ class PlotItem(QtGui.QGraphicsWidget):
         return wr
 
 
+
+
     def viewChanged(self, *args):
         self.emit(QtCore.SIGNAL('viewChanged'), *args)
 
@@ -273,23 +293,31 @@ class PlotItem(QtGui.QGraphicsWidget):
     def yLinkComboChanged(self):
         self.setYLink(str(self.ctrl.yLinkCombo.currentText()))
 
-    def setXLink(self, plotName=None):
-        if self.manager is None:
-            return
-        if self.xLinkPlot is not None:
-            self.manager.unlinkX(self, self.xLinkPlot)
-        plot = self.manager.getWidget(plotName)
+    def setXLink(self, plot=None):
+        """Link this plot's X axis to another plot (pass either the PlotItem/PlotWidget or the registered name of the plot)"""
+        if isinstance(plot, basestring):
+            if self.manager is None:
+                return
+            if self.xLinkPlot is not None:
+                self.manager.unlinkX(self, self.xLinkPlot)
+            plot = self.manager.getWidget(plot)
+        if not isinstance(plot, PlotItem) and hasattr(plot, 'getPlotItem'):
+            plot = plot.getPlotItem()
         self.xLinkPlot = plot
         if plot is not None:
             self.setManualXScale()
             self.manager.linkX(self, plot)
             
-    def setYLink(self, plotName=None):
-        if self.manager is None:
-            return
-        if self.yLinkPlot is not None:
-            self.manager.unlinkY(self, self.yLinkPlot)
-        plot = self.manager.getWidget(plotName)
+    def setYLink(self, plot=None):
+        """Link this plot's Y axis to another plot (pass either the PlotItem/PlotWidget or the registered name of the plot)"""
+        if isinstance(plot, basestring):
+            if self.manager is None:
+                return
+            if self.yLinkPlot is not None:
+                self.manager.unlinkY(self, self.yLinkPlot)
+            plot = self.manager.getWidget(plot)
+        if not isinstance(plot, PlotItem) and hasattr(plot, 'getPlotItem'):
+            plot = plot.getPlotItem()
         self.yLinkPlot = plot
         if plot is not None:
             self.setManualYScale()
@@ -339,6 +367,8 @@ class PlotItem(QtGui.QGraphicsWidget):
         self.recomputeAverages()
         
     def recomputeAverages(self):
+        if not self.ctrl.averageGroup.isChecked():
+            return
         for k in self.avgCurves:
             self.removeItem(self.avgCurves[k][1])
             #Qwt.QwtPlotCurve.detach(self.avgCurves[k][1])
@@ -406,6 +436,8 @@ class PlotItem(QtGui.QGraphicsWidget):
         self.vb.setMouseEnabled(*state)
         
     def xRangeChanged(self, _, range):
+        if any(isnan(range)) or any(isinf(range)):
+            raise Exception("yRange invalid: %s. Signal came from %s" % (str(range), str(self.sender())))
         self.ctrl.xMinText.setText('%0.5g' % range[0])
         self.ctrl.xMaxText.setText('%0.5g' % range[1])
         
@@ -423,6 +455,8 @@ class PlotItem(QtGui.QGraphicsWidget):
         self.emit(QtCore.SIGNAL('xRangeChanged'), self, range)
 
     def yRangeChanged(self, _, range):
+        if any(isnan(range)) or any(isinf(range)):
+            raise Exception("yRange invalid: %s. Signal came from %s" % (str(range), str(self.sender())))
         self.ctrl.yMinText.setText('%0.5g' % range[0])
         self.ctrl.yMaxText.setText('%0.5g' % range[1])
         
@@ -511,18 +545,25 @@ class PlotItem(QtGui.QGraphicsWidget):
         if not item in self.items:
             return
         self.items.remove(item)
-        self.vb.removeItem(item)
+        if item.scene() is not None:
+            self.vb.removeItem(item)
         if item in self.curves:
             self.curves.remove(item)
             self.updateDecimation()
             self.updateParamList()
-            QtCore.QObject.connect(item, QtCore.SIGNAL('plotChanged'), self.plotChanged)
+            item.connect(QtCore.SIGNAL('plotChanged'), self.plotChanged)
 
     def clear(self):
         for i in self.items[:]:
             self.removeItem(i)
         self.avgCurves = {}
     
+    def clearPlots(self):
+        for i in self.curves[:]:
+            self.removeItem(i)
+        self.avgCurves = {}
+        
+    
     def plot(self, data=None, x=None, clear=False, params=None, pen=None):
         if clear:
             self.clear()
@@ -549,6 +590,8 @@ class PlotItem(QtGui.QGraphicsWidget):
         return curve
 
     def addCurve(self, c, params=None):
+        if params is None:
+            params = {}
         c.setMeta(params)
         self.curves.append(c)
         #Qwt.QwtPlotCurve.attach(c, self)
@@ -569,7 +612,7 @@ class PlotItem(QtGui.QGraphicsWidget):
         if self.ctrl.averageGroup.isChecked():
             self.addAvgCurve(c)
             
-        QtCore.QObject.connect(c, QtCore.SIGNAL('plotChanged'), self.plotChanged)
+        c.connect(QtCore.SIGNAL('plotChanged'), self.plotChanged)
         self.plotChanged()
 
     def plotChanged(self, curve=None):
@@ -587,7 +630,7 @@ class PlotItem(QtGui.QGraphicsWidget):
                         mn = cmn
                     if mx is None or cmx > mx:
                         mx = cmx
-                if mn is None or mx is None:
+                if mn is None or mx is None or any(isnan([mn, mx])) or any(isinf([mn, mx])):
                     continue
                 if mn == mx:
                     mn -= 1
@@ -632,24 +675,58 @@ class PlotItem(QtGui.QGraphicsWidget):
         if fileName is None:
             fileName = QtGui.QFileDialog.getSaveFileName()
         fileName = str(fileName)
-        
+        PlotItem.lastFileDir = os.path.dirname(fileName)
         
         self.svg = QtSvg.QSvgGenerator()
         self.svg.setFileName(fileName)
         res = 120.
-        self.svg.setResolution(res)
-        self.svg.setSize(QtCore.QSize(self.size().width(), self.size().height()))
-        painter = QtGui.QPainter(self.svg)
-        #self.scene().render(painter, QtCore.QRectF(), self.mapRectToScene(self.boundingRect()))
-        items = self.scene().items()
-        self.scene().views()[0].drawItems(painter, len(items), items)
+        #bounds = self.mapRectToScene(self.boundingRect())
+        view = self.scene().views()[0]
+        bounds = view.viewport().rect()
+        bounds = QtCore.QRectF(0, 0, bounds.width(), bounds.height())
         
+        self.svg.setResolution(res)
+        #self.svg.setSize(QtCore.QSize(self.size().width(), self.size().height()))
+        self.svg.setViewBox(bounds)
+        
+        self.svg.setSize(QtCore.QSize(bounds.width(), bounds.height()))
+        
+        painter = QtGui.QPainter(self.svg)
+        #self.scene().render(painter, QtCore.QRectF(), view.mapToScene(bounds).boundingRect())
+        
+        #items = self.scene().items()
+        #self.scene().views()[0].drawItems(painter, len(items), items)
+        
+        #print view, type(view)
+        view.render(painter, bounds)
+        
+        painter.end()
+        
+        ## Workaround to set pen widths correctly
+        import re
+        data = open(fileName).readlines()
+        for i in range(len(data)):
+            line = data[i]
+            m = re.match(r'(<g .*)stroke-width="1"(.*transform="matrix\(([^\)]+)\)".*)', line)
+            if m is not None:
+                #print "Matched group:", line
+                g = m.groups()
+                matrix = map(float, g[2].split(','))
+                #print "matrix:", matrix
+                scale = max(abs(matrix[0]), abs(matrix[3]))
+                if scale == 0 or scale == 1.0:
+                    continue
+                data[i] = g[0] + ' stroke-width="%0.2g" ' % (1.0/scale) + g[1] + '\n'
+                #print "old line:", line
+                #print "new line:", data[i]
+        open(fileName, 'w').write(''.join(data))
         
         
     def writeImage(self, fileName=None):
         if fileName is None:
             fileName = QtGui.QFileDialog.getSaveFileName()
         fileName = str(fileName)
+        PlotItem.lastFileDir = os.path.dirname(fileName)
         self.png = QtGui.QImage(int(self.size().width()), int(self.size().height()), QtGui.QImage.Format_ARGB32)
         painter = QtGui.QPainter(self.png)
         painter.setRenderHints(painter.Antialiasing | painter.TextAntialiasing)
@@ -657,6 +734,29 @@ class PlotItem(QtGui.QGraphicsWidget):
         painter.end()
         self.png.save(fileName)
         
+    def writeCsv(self, fileName=None):
+        if fileName is None:
+            fileName = QtGui.QFileDialog.getSaveFileName()
+        fileName = str(fileName)
+        PlotItem.lastFileDir = os.path.dirname(fileName)
+        
+        fd = open(fileName, 'w')
+        data = [c.getData() for c in self.curves]
+        i = 0
+        while True:
+            done = True
+            for d in data:
+                if i < len(d[0]):
+                    fd.write('%g,%g,'%(d[0][i], d[1][i]))
+                    done = False
+                else:
+                    fd.write(' , ,')
+            fd.write('\n')
+            if done:
+                break
+            i += 1
+        fd.close()
+
 
     def saveState(self):
         if not HAVE_WIDGETGROUP:
@@ -672,8 +772,18 @@ class PlotItem(QtGui.QGraphicsWidget):
             raise Exception("State save/restore requires WidgetGroup class.")
         if 'paramList' in state:
             self.paramList = state['paramList'].copy()
-            self.stateGroup.setState(state)
+            
+        self.stateGroup.setState(state)
+        self.updateSpectrumMode()
+        self.updateDownsampling()
+        self.updateAlpha()
+        self.updateDecimation()
+        
+        self.stateGroup.setState(state)
+        self.updateXScale()
+        self.updateYScale()
         self.updateParamList()
+        
         #print "\nRESTORE %s:\n" % str(self.name), state
         #print "Restoring state. averageGroup.isChecked(): %s  state: %s" % (str(self.ctrl.averageGroup.isChecked()), str(state['averageGroup']))
         #avg = self.ctrl.averageGroup.isChecked()
@@ -787,7 +897,6 @@ class PlotItem(QtGui.QGraphicsWidget):
         self.mouseScreenPos = ev.screenPos()
         
     def ctrlBtnClicked(self):
-        #print self.mousePos
         self.ctrlMenu.popup(self.mouseScreenPos)
 
     #def _checkLabelKey(self, key):
@@ -923,6 +1032,8 @@ class PlotItem(QtGui.QGraphicsWidget):
             #self.fileDialog.setDirectory(PlotItem.lastFileDir)
         self.fileDialog.setFileMode(QtGui.QFileDialog.AnyFile)
         self.fileDialog.setAcceptMode(QtGui.QFileDialog.AcceptSave)
+        if PlotItem.lastFileDir is not None:
+            self.fileDialog.setDirectory(PlotItem.lastFileDir)
         self.fileDialog.show()
         QtCore.QObject.connect(self.fileDialog, QtCore.SIGNAL('fileSelected(const QString)'), self.writeSvg)
             
@@ -934,11 +1045,23 @@ class PlotItem(QtGui.QGraphicsWidget):
         self.fileDialog = QtGui.QFileDialog()
         #if PlotItem.lastFileDir is not None:
             #self.fileDialog.setDirectory(PlotItem.lastFileDir)
+        if PlotItem.lastFileDir is not None:
+            self.fileDialog.setDirectory(PlotItem.lastFileDir)
         self.fileDialog.setFileMode(QtGui.QFileDialog.AnyFile)
         self.fileDialog.setAcceptMode(QtGui.QFileDialog.AcceptSave)
         self.fileDialog.show()
         QtCore.QObject.connect(self.fileDialog, QtCore.SIGNAL('fileSelected(const QString)'), self.writeImage)
             
+    def saveCsvClicked(self):
+        self.fileDialog = QtGui.QFileDialog()
+        #if PlotItem.lastFileDir is not None:
+            #self.fileDialog.setDirectory(PlotItem.lastFileDir)
+        if PlotItem.lastFileDir is not None:
+            self.fileDialog.setDirectory(PlotItem.lastFileDir)
+        self.fileDialog.setFileMode(QtGui.QFileDialog.AnyFile)
+        self.fileDialog.setAcceptMode(QtGui.QFileDialog.AcceptSave)
+        self.fileDialog.show()
+        QtCore.QObject.connect(self.fileDialog, QtCore.SIGNAL('fileSelected(const QString)'), self.writeCsv)
     #def imgFileSelected(self, fileName):
         ##PlotWidget.lastFileDir = os.path.split(fileName)[0]
         #self.writeImage(str(fileName))

PlotWidget.py

@@ -11,17 +11,26 @@ import exceptions
 
 class PlotWidget(GraphicsView):
     """Widget implementing a graphicsView with a single PlotItem inside."""
-    def __init__(self, parent=None):
+    def __init__(self, parent=None, **kargs):
         GraphicsView.__init__(self, parent)
         self.setSizePolicy(QtGui.QSizePolicy.Expanding, QtGui.QSizePolicy.Expanding)
         self.enableMouse(False)
-        self.plotItem = PlotItem()
+        self.plotItem = PlotItem(**kargs)
         self.setCentralItem(self.plotItem)
         ## Explicitly wrap methods from plotItem
-        for m in ['addItem', 'autoRange', 'clear']:
+        for m in ['addItem', 'removeItem', 'autoRange', 'clear', 'setXRange', 'setYRange']:
             setattr(self, m, getattr(self.plotItem, m))
         QtCore.QObject.connect(self.plotItem, QtCore.SIGNAL('viewChanged'), self.viewChanged)
                 
+    #def __dtor__(self):
+        ##print "Called plotWidget sip destructor"
+        #self.quit()
+        
+        
+    def quit(self):
+        self.plotItem.clear()
+        self.scene().clear()
+        
     def __getattr__(self, attr):  ## implicitly wrap methods from plotItem
         if hasattr(self.plotItem, attr):
             m = getattr(self.plotItem, attr)
@@ -41,3 +50,5 @@ class PlotWidget(GraphicsView):
     def restoreState(self, state):
         return self.plotItem.restoreState(state)
         
+    def getPlotItem(self):
+        return self.plotItem

examples/test_ImageView.py

@@ -4,7 +4,7 @@ import sys, os
 sys.path.append(os.path.join(os.path.dirname(__file__), '..', '..'))
 
 from pyqtgraph.ImageView import *
-from numpy import random
+from numpy import random, linspace
 from PyQt4 import QtCore, QtGui
 from scipy.ndimage import *
 
@@ -17,14 +17,27 @@ win.setCentralWidget(imv)
 win.show()
 
 ## Create random 3D data set
-img = gaussian_filter(random.random((200, 200)), (5, 5)) * 5
-data = random.random((100, 200, 200))
-data += img
-for i in range(data.shape[0]):
-    data[i] += exp(-(2.*i)/data.shape[0])
-data += 10    
+img = gaussian_filter(random.normal(size=(200, 200)), (5, 5)) * 20 + 100
+img = img[newaxis,:,:]
+decay = exp(-linspace(0,0.3,100))[:,newaxis,newaxis]
+data = random.normal(size=(100, 200, 200))
+data += img * decay
+
+#for i in range(data.shape[0]):
+    #data[i] += 10*exp(-(2.*i)/data.shape[0])
+data += 2
+
+## Add time-varying signal
+sig = zeros(data.shape[0])
+sig[30:] += exp(-linspace(1,10, 70))
+sig[40:] += exp(-linspace(1,10, 60))
+sig[70:] += exp(-linspace(1,10, 30))
+
+sig = sig[:,newaxis,newaxis] * 3
+data[:,50:60,50:60] += sig
+
 
 ## Display the data
-imv.setImage(data)
+imv.setImage(data, xvals=linspace(1., 3., data.shape[0]))
 
 app.exec_()

examples/test_PlotWidget.py

@@ -34,18 +34,26 @@ rect = QtGui.QGraphicsRectItem(QtCore.QRectF(0, 0, 1, 1))
 rect.setPen(QtGui.QPen(QtGui.QColor(100, 200, 100)))
 pw.addItem(rect)
 
-pen = QtGui.QPen(QtGui.QBrush(QtGui.QColor(255, 255, 255, 10)), 5)
-pen.setCosmetic(True)
+#pen = QtGui.QPen(QtGui.QBrush(QtGui.QColor(255, 255, 255, 50)), 5)
+#pen.setCosmetic(True)
 #pen.setJoinStyle(QtCore.Qt.MiterJoin)
-p1.setShadowPen(pen)
-p1.setPen(QtGui.QPen(QtGui.QColor(255, 255, 255, 50)))
+#p1.setShadowPen(pen)
+p1.setPen(QtGui.QPen(QtGui.QColor(255, 255, 255)))
 
 #l1 = QtGui.QGraphicsLineItem(0, 2, 2, 3)
 #l1.setPen(QtGui.QPen(QtGui.QColor(255,0,0)))
-l2 = InfiniteLine(pw, 1.5, 0)
+
+#l2 = InfiniteLine(pw2, 1.5, 90, movable=True)
+#
+#lr1 = LinearRegionItem(pw2, 'vertical', [1.1, 1.3])
+#pw2.addItem(lr1)
+#lr2 = LinearRegionItem(pw2, 'horizontal', [50, 100])
+#pw2.addItem(lr2)
+
+
 #l3 = InfiniteLine(pw, [1.5, 1.5], 45)
 #pw.addItem(l1)
-pw.addItem(l2)
+#pw2.addItem(l2)
 #pw.addItem(l3)
 
 pw3.plot(array([100000]*100))
@@ -72,12 +80,14 @@ updateData()
 pw.autoRange()
 
 t = QtCore.QTimer()
+
 QtCore.QObject.connect(t, QtCore.SIGNAL('timeout()'), updateData)
 t.start(50)
 
+
 for i in range(0, 5):
     for j in range(0, 3):
         yd, xd = rand(10000)
         pw2.plot(yd*(j+1), xd, params={'iter': i, 'val': j})
     
-app.exec_()
+#app.exec_()

examples/test_ROItypes.py

@@ -19,7 +19,7 @@ class Win(QtGui.QMainWindow):
   pass
 
 w = Win()
-v = GraphicsView()
+v = GraphicsView(useOpenGL=False)
 v.invertY(True)
 v.setAspectLocked(True)
 v.enableMouse(True)
@@ -72,6 +72,9 @@ elroi = EllipseROI([110, 10], [30, 20])
 s.addItem(elroi)
 croi = CircleROI([110, 50], [20, 20])
 s.addItem(croi)
+troi = PolygonROI([[0,0], [1,0], [0,1]])
+s.addItem(troi)
+
 
 def updateImg(roi):
   global im1, im2, im3, im4, arr
@@ -80,11 +83,11 @@ def updateImg(roi):
   arr2 = roi.getArrayRegion(arr, img=im2)
   im4.updateImage(arr2, autoRange=True)
 
-roi.connect(QtCore.SIGNAL('regionChanged'), lambda: updateImg(roi))
-roi2.connect(QtCore.SIGNAL('regionChanged'), lambda: updateImg(roi2))
-croi.connect(QtCore.SIGNAL('regionChanged'), lambda: updateImg(croi))
-elroi.connect(QtCore.SIGNAL('regionChanged'), lambda: updateImg(elroi))
-mlroi.connect(QtCore.SIGNAL('regionChanged'), lambda: updateImg(mlroi))
+roi.connect(roi, QtCore.SIGNAL('regionChanged'), lambda: updateImg(roi))
+roi2.connect(roi2, QtCore.SIGNAL('regionChanged'), lambda: updateImg(roi2))
+croi.connect(croi, QtCore.SIGNAL('regionChanged'), lambda: updateImg(croi))
+elroi.connect(elroi, QtCore.SIGNAL('regionChanged'), lambda: updateImg(elroi))
+mlroi.connect(mlroi, QtCore.SIGNAL('regionChanged'), lambda: updateImg(mlroi))
 
 
 v.setRange(QtCore.QRect(-2, -2, 220, 220))

examples/test_viewBox.py

@@ -30,7 +30,30 @@ vb = ViewBox()
 p1 = PlotCurveItem()
 vb.addItem(p1)
 vl.addWidget(gv)
-rect = QtGui.QGraphicsRectItem(QtCore.QRectF(0, 0, 1, 1))
+
+class movableRect(QtGui.QGraphicsRectItem):
+    def __init__(self, *args):
+        QtGui.QGraphicsRectItem.__init__(self, *args)
+        self.setAcceptHoverEvents(True)
+    def hoverEnterEvent(self, ev):
+        self.savedPen = self.pen()
+        self.setPen(QtGui.QPen(QtGui.QColor(255, 255, 255)))
+        ev.ignore()
+    def hoverLeaveEvent(self, ev):
+        self.setPen(self.savedPen)
+        ev.ignore()
+    def mousePressEvent(self, ev):
+        if ev.button() == QtCore.Qt.LeftButton:
+            ev.accept()
+            self.pressDelta = self.mapToParent(ev.pos()) - self.pos()
+        else:
+            ev.ignore()     
+    def mouseMoveEvent(self, ev):
+        self.setPos(self.mapToParent(ev.pos()) - self.pressDelta)
+        
+
+#rect = QtGui.QGraphicsRectItem(QtCore.QRectF(0, 0, 1, 1))
+rect = movableRect(QtCore.QRectF(0, 0, 1, 1))
 rect.setPen(QtGui.QPen(QtGui.QColor(100, 200, 100)))
 vb.addItem(rect)
 
@@ -67,4 +90,4 @@ t = QtCore.QTimer()
 QtCore.QObject.connect(t, QtCore.SIGNAL('timeout()'), updateData)
 t.start(50)
 
-app.exec_()
+#app.exec_()

graphicsWindows.py

@@ -8,13 +8,16 @@ Distributed under MIT/X11 license. See license.txt for more infomation.
 from PyQt4 import QtCore, QtGui
 from PlotWidget import *
 from ImageView import *
-
+QAPP = None
 class PlotWindow(QtGui.QMainWindow):
     def __init__(self, title=None):
+        if QtGui.QApplication.instance() is None:
+            global QAPP
+            QAPP = QtGui.QApplication([])
         QtGui.QMainWindow.__init__(self)
         self.cw = PlotWidget()
         self.setCentralWidget(self.cw)
-        for m in ['plot', 'autoRange', 'addItem', 'setLabel', 'clear']:
+        for m in ['plot', 'autoRange', 'addItem', 'removeItem', 'setLabel', 'clear']:
             setattr(self, m, getattr(self.cw, m))
         if title is not None:
             self.setWindowTitle(title)
@@ -22,10 +25,13 @@ class PlotWindow(QtGui.QMainWindow):
 
 class ImageWindow(QtGui.QMainWindow):
     def __init__(self, title=None):
+        if QtGui.QApplication.instance() is None:
+            global QAPP
+            QAPP = QtGui.QApplication([])
         QtGui.QMainWindow.__init__(self)
         self.cw = ImageView()
         self.setCentralWidget(self.cw)
-        for m in ['setImage', 'autoRange', 'addItem']:
+        for m in ['setImage', 'autoRange', 'addItem', 'removeItem', 'blackLevel', 'whiteLevel', 'imageItem']:
             setattr(self, m, getattr(self.cw, m))
         if title is not None:
             self.setWindowTitle(title)

plotConfigTemplate.py

@@ -2,8 +2,8 @@
 
 # Form implementation generated from reading ui file 'plotConfigTemplate.ui'
 #
-# Created: Mon Mar 29 22:40:47 2010
-#      by: PyQt4 UI code generator 4.6
+# Created: Sat Jul 17 00:28:43 2010
+#      by: PyQt4 UI code generator 4.7.2
 #
 # WARNING! All changes made in this file will be lost!
 
@@ -12,7 +12,7 @@ from PyQt4 import QtCore, QtGui
 class Ui_Form(object):
     def setupUi(self, Form):
         Form.setObjectName("Form")
-        Form.resize(210, 340)
+        Form.resize(250, 340)
         Form.setMaximumSize(QtCore.QSize(250, 350))
         self.gridLayout_3 = QtGui.QGridLayout(Form)
         self.gridLayout_3.setMargin(0)
@@ -187,6 +187,7 @@ class Ui_Form(object):
         self.verticalLayout_3.addWidget(self.alphaGroup)
         self.gridGroup = QtGui.QGroupBox(self.tab_3)
         self.gridGroup.setCheckable(True)
+        self.gridGroup.setChecked(False)
         self.gridGroup.setObjectName("gridGroup")
         self.verticalLayout_4 = QtGui.QVBoxLayout(self.gridGroup)
         self.verticalLayout_4.setObjectName("verticalLayout_4")
@@ -227,6 +228,9 @@ class Ui_Form(object):
         self.saveMaBtn = QtGui.QPushButton(self.tab_4)
         self.saveMaBtn.setObjectName("saveMaBtn")
         self.gridLayout_6.addWidget(self.saveMaBtn, 2, 0, 1, 1)
+        self.saveCsvBtn = QtGui.QPushButton(self.tab_4)
+        self.saveCsvBtn.setObjectName("saveCsvBtn")
+        self.gridLayout_6.addWidget(self.saveCsvBtn, 3, 0, 1, 1)
         self.gridLayout_7.addLayout(self.gridLayout_6, 0, 1, 1, 1)
         spacerItem2 = QtGui.QSpacerItem(59, 20, QtGui.QSizePolicy.Expanding, QtGui.QSizePolicy.Minimum)
         self.gridLayout_7.addItem(spacerItem2, 0, 2, 1, 1)
@@ -281,5 +285,6 @@ class Ui_Form(object):
         self.saveSvgBtn.setText(QtGui.QApplication.translate("Form", "SVG", None, QtGui.QApplication.UnicodeUTF8))
         self.saveImgBtn.setText(QtGui.QApplication.translate("Form", "Image", None, QtGui.QApplication.UnicodeUTF8))
         self.saveMaBtn.setText(QtGui.QApplication.translate("Form", "MetaArray", None, QtGui.QApplication.UnicodeUTF8))
+        self.saveCsvBtn.setText(QtGui.QApplication.translate("Form", "CSV", None, QtGui.QApplication.UnicodeUTF8))
         self.tabWidget.setTabText(self.tabWidget.indexOf(self.tab_4), QtGui.QApplication.translate("Form", "Save", None, QtGui.QApplication.UnicodeUTF8))
 

plotConfigTemplate.ui

@@ -6,7 +6,7 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>210</width>
+    <width>250</width>
     <height>340</height>
    </rect>
   </property>
@@ -35,7 +35,7 @@
       </size>
      </property>
      <property name="currentIndex">
-      <number>1</number>
+      <number>0</number>
      </property>
      <widget class="QWidget" name="tab">
       <attribute name="title">
@@ -419,6 +419,9 @@
          <property name="checkable">
           <bool>true</bool>
          </property>
+         <property name="checked">
+          <bool>false</bool>
+         </property>
          <layout class="QVBoxLayout" name="verticalLayout_4">
           <item>
            <widget class="QSlider" name="gridAlphaSlider">
@@ -514,6 +517,13 @@
            </property>
           </widget>
          </item>
+         <item row="3" column="0">
+          <widget class="QPushButton" name="saveCsvBtn">
+           <property name="text">
+            <string>CSV</string>
+           </property>
+          </widget>
+         </item>
         </layout>
        </item>
        <item row="0" column="2">

widgets.py

@@ -10,25 +10,26 @@ of array data from ImageItems.
 """
 
 from PyQt4 import QtCore, QtGui, QtOpenGL, QtSvg
-from numpy import array, arccos, dot, pi, zeros, vstack, ubyte, fromfunction, ceil, floor
+from numpy import array, arccos, dot, pi, zeros, vstack, ubyte, fromfunction, ceil, floor, arctan2
 from numpy.linalg import norm
 import scipy.ndimage as ndimage
 from Point import *
 from math import cos, sin
+from ObjectWorkaround import *
 
 def rectStr(r):
     return "[%f, %f] + [%f, %f]" % (r.x(), r.y(), r.width(), r.height())
 
-## Multiple inheritance not allowed in PyQt. Retarded workaround:
-class QObjectWorkaround:
-    def __init__(self):
-        self._qObj_ = QtCore.QObject()
-    def __getattr__(self, attr):
-        if attr == '_qObj_':
-            raise Exception("QObjectWorkaround not initialized!")
-        return getattr(self._qObj_, attr)
-    def connect(self, *args):
-        return QtCore.QObject.connect(self._qObj_, *args)
+# Multiple inheritance not allowed in PyQt. Retarded workaround:
+#class QObjectWorkaround:
+    #def __init__(self):
+        #self._qObj_ = QtCore.QObject()
+    #def __getattr__(self, attr):
+        #if attr == '_qObj_':
+            #raise Exception("QObjectWorkaround not initialized!")
+        #return getattr(self._qObj_, attr)
+    #def connect(self, *args):
+        #return QtCore.QObject.connect(self._qObj_, *args)
 
 
 class ROI(QtGui.QGraphicsItem, QObjectWorkaround):
@@ -46,10 +47,10 @@ class ROI(QtGui.QGraphicsItem, QObjectWorkaround):
         self.state = {'pos': pos, 'size': size, 'angle': angle}
         self.lastState = None
         self.setPos(pos)
-        self.rotate(-angle)
+        self.rotate(-angle * 180. / pi)
         self.setZValue(10)
         
-        self.handleSize = 4
+        self.handleSize = 5
         self.invertible = invertible
         self.maxBounds = maxBounds
         
@@ -93,6 +94,10 @@ class ROI(QtGui.QGraphicsItem, QObjectWorkaround):
         pos = Point(pos)
         return self.addHandle({'type': 't', 'pos': pos, 'item': item})
     
+    def addFreeHandle(self, pos, axes=None, item=None):
+        pos = Point(pos)
+        return self.addHandle({'type': 'f', 'pos': pos, 'item': item})
+    
     def addScaleHandle(self, pos, center, axes=None, item=None):
         pos = Point(pos)
         center = Point(center)
@@ -238,6 +243,9 @@ class ROI(QtGui.QGraphicsItem, QObjectWorkaround):
                 snap = Point(self.snapSize, self.snapSize)
             self.translate(p1-p0, snap=snap, update=False)
         
+        elif h['type'] == 'f':
+            h['item'].setPos(self.mapFromScene(pos))
+            
         elif h['type'] == 's':
             #c = h['center']
             #cs = c * self.state['size']
@@ -439,11 +447,14 @@ class ROI(QtGui.QGraphicsItem, QObjectWorkaround):
         return QtCore.QRectF(0, 0, self.state['size'][0], self.state['size'][1])
 
     def paint(self, p, opt, widget):
+        p.save()
         r = self.boundingRect()
         p.setRenderHint(QtGui.QPainter.Antialiasing)
         p.setPen(self.pen)
-        p.drawRect(r)
-        
+        p.translate(r.left(), r.top())
+        p.scale(r.width(), r.height())
+        p.drawRect(0, 0, 1, 1)
+        p.restore()
 
     def getArraySlice(self, data, img, axes=(0,1), returnSlice=True):
         """Return a tuple of slice objects that can be used to slice the region from data covered by this ROI.
@@ -602,15 +613,21 @@ class Handle(QtGui.QGraphicsItem):
         #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
@@ -660,20 +677,24 @@ class Handle(QtGui.QGraphicsItem):
             r[0].movePoint(r[1], pos, modifiers)
         
     def paint(self, p, opt, widget):
-        m = p.transform()
-        mi = m.inverted()[0]
+        ## 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 = 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.setRenderHint(QtGui.QPainter.Antialiasing)
+        p.setRenderHints(p.Antialiasing, True)
         p.setPen(self.pen)
-        ang = self.startAng
+        ang = self.startAng + va
         dt = 2*pi / self.sides
         for i in range(0, self.sides):
             x1 = size * cos(ang)
@@ -757,9 +778,9 @@ class MultiLineROI(QtGui.QGraphicsItem, QObjectWorkaround):
         for l in self.lines:
             l.translatable = False
             #self.addToGroup(l)
-            l.connect(QtCore.SIGNAL('regionChanged'), self.roiChangedEvent)
-            l.connect(QtCore.SIGNAL('regionChangeStarted'), self.roiChangeStartedEvent)
-            l.connect(QtCore.SIGNAL('regionChangeFinished'), self.roiChangeFinishedEvent)
+            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
@@ -835,3 +856,34 @@ class CircleROI(EllipseROI):
         #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
+