def __init__(self, parent, cropModel, imagescene2d):
"""
Constructs a view upon a ImageScene2D
imagescene2d -- a ImgeScene2D instance
"""
QGraphicsView.__init__(self, parent)
self.setScene(imagescene2d)
self.mousePos = QPointF(0,0)
# FIXME: These int members shadow QWidget.x() and QWidget.y(), which can lead to confusion when debugging...
self.x, self.y = (0,0)
self.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
self.setVerticalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
self._isRubberBandZoom = False
self._cursorBackup = None
#these attributes are exposed as public properties above
self._sliceShape = None #2D shape of this view's shown image
self._slices = None #number of slices that are stacked
self._hud = None
self._crossHairCursor = None
self._sliceIntersectionMarker = None
self._ticker = QTimer(self)
self._ticker.timeout.connect(self._tickerEvent)
#
# Setup the Viewport for fast painting
#
#With these flags turned on we could handle the drawing of the
#white background ourselves thus removing the flicker
#when scrolling fast through the slices
#self.viewport().setAttribute(Qt.WA_OpaquePaintEvent)
#self.viewport().setAttribute(Qt.WA_NoSystemBackground)
#self.viewport().setAttribute(Qt.WA_PaintOnScreen)
#self.viewport().setAutoFillBackground(False)
self.setViewportUpdateMode(QGraphicsView.MinimalViewportUpdate)
#as rescaling images is slow if done in software,
#we use Qt's built-in background caching mode so that the cached
#image need only be blitted on the screen when we only move
#the cursor
self.setCacheMode(QGraphicsView.CacheBackground)
self.setRenderHint(QPainter.Antialiasing, False)
self._crossHairCursor = CrossHairCursor(self.scene())
self._crossHairCursor.setZValue(99)
self.posModel = self.scene()._posModel
self.axis = self.scene()._along[1] - 1 # axis is 0,1,2 for X,Y,Z
self._sliceIntersectionMarker = SliceIntersectionMarker(self.scene(), self.axis, self.posModel)
self._sliceIntersectionMarker.setZValue(100)
self._sliceIntersectionMarker.setVisible(True)
self._croppingMarkers = CroppingMarkers( self.scene(), self.axis, cropModel )
#FIXME: this should be private, but is currently used from
# within the image scene renderer
self.tempImageItems = []
self._zoomFactor = 1.0
#for panning
self._lastPanPoint = QPoint()
self._dragMode = False
self._deltaPan = QPointF(0,0)
#FIXME: Is there are more elegant way to handle this?
self.setMouseTracking(True)
# invisible cursor to enable custom cursor
self._hiddenCursor = QCursor(Qt.BlankCursor)
def __init__(self, parent, cropModel, imagescene2d):
"""
Constructs a view upon a ImageScene2D
imagescene2d -- a ImgeScene2D instance
"""
QGraphicsView.__init__(self, parent)
# We can't use OpenGL because the HUD doesn't render properly on top.
# Maybe this will be fixed in Qt5?
if False:
self.setViewport(QGLWidget())
self.setScene(imagescene2d)
self.mousePos = QPointF(0,0)
# FIXME: These int members shadow QWidget.x() and QWidget.y(), which can lead to confusion when debugging...
self.x, self.y = (0,0)
self.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
self.setVerticalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
self._isRubberBandZoom = False
self._cursorBackup = None
#these attributes are exposed as public properties above
self._sliceShape = None #2D shape of this view's shown image
self._slices = None #number of slices that are stacked
self._hud = None
self._crossHairCursor = None
self._sliceIntersectionMarker = None
self._ticker = QTimer(self)
self._ticker.timeout.connect(self._tickerEvent)
#
# Setup the Viewport for fast painting
#
#With these flags turned on we could handle the drawing of the
#white background ourselves thus removing the flicker
#when scrolling fast through the slices
#self.viewport().setAttribute(Qt.WA_OpaquePaintEvent)
#self.viewport().setAttribute(Qt.WA_NoSystemBackground)
#self.viewport().setAttribute(Qt.WA_PaintOnScreen)
#self.viewport().setAutoFillBackground(False)
self.setViewportUpdateMode(QGraphicsView.MinimalViewportUpdate)
#as rescaling images is slow if done in software,
#we use Qt's built-in background caching mode so that the cached
#image need only be blitted on the screen when we only move
#the cursor
self.setCacheMode(QGraphicsView.CacheBackground)
self.setRenderHint(QPainter.Antialiasing, False)
self._crossHairCursor = CrossHairCursor(self.scene())
self._crossHairCursor.setZValue(99)
self.posModel = self.scene()._posModel
self.axis = self.scene()._along[1] - 1 # axis is 0,1,2 for X,Y,Z
self._sliceIntersectionMarker = SliceIntersectionMarker(self.scene(), self.axis, self.posModel)
self._sliceIntersectionMarker.setZValue(100)
self._sliceIntersectionMarker.setVisible(True)
self._croppingMarkers = CroppingMarkers( self.scene(), self.axis, cropModel )
#FIXME: this should be private, but is currently used from
# within the image scene renderer
self.tempImageItems = []
self._zoomFactor = 1.0
#for panning
self._lastPanPoint = QPoint()
self._dragMode = False
self._deltaPan = QPointF(0,0)
#FIXME: Is there are more elegant way to handle this?
self.setMouseTracking(True)
# invisible cursor to enable custom cursor
self._hiddenCursor = QCursor(Qt.BlankCursor)
class ImageView2D(QGraphicsView):
focusChanged = pyqtSignal()
"""
Shows a ImageScene2D to the user and allows for interactive
scrolling, panning, zooming etc.
"""
@property
def sliceShape(self):
"""
(width, height) of the scene.
Specifying the shape is necessary to allow for correct
scrollbars
"""
return self._sliceShape
@sliceShape.setter
def sliceShape(self, s):
self._sliceShape = s
self.scene().dataShape = s
self._crossHairCursor.dataShape = s
self._sliceIntersectionMarker.dataShape = s
self._croppingMarkers.dataShape = s
@property
def hud(self):
return self._hud
@hud.setter
def hud(self, hud):
"""
Sets up a heads up display at the upper left corner of the view
hud -- a QWidget
"""
self._hud = hud
self.setLayout(QVBoxLayout())
self.layout().setContentsMargins(0,0,0,0)
self.layout().addWidget(self._hud)
self.layout().addStretch()
scene = self.scene()
hud.zoomToFitButtonClicked.connect(self.fitImage)
hud.resetZoomButtonClicked.connect(self.doScaleTo)
hud.rotLeftButtonClicked.connect(scene._onRotateLeft)
hud.rotRightButtonClicked.connect(scene._onRotateRight)
hud.swapAxesButtonClicked.connect(scene._onSwapAxes)
hud.exportButtonClicked.connect(self.exportImages)
scene.axesChanged.connect(hud.setAxes)
def __init__(self, parent, cropModel, imagescene2d):
"""
Constructs a view upon a ImageScene2D
imagescene2d -- a ImgeScene2D instance
"""
QGraphicsView.__init__(self, parent)
self.setScene(imagescene2d)
self.mousePos = QPointF(0,0)
# FIXME: These int members shadow QWidget.x() and QWidget.y(), which can lead to confusion when debugging...
self.x, self.y = (0,0)
self.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
self.setVerticalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
self._isRubberBandZoom = False
self._cursorBackup = None
#these attributes are exposed as public properties above
self._sliceShape = None #2D shape of this view's shown image
self._slices = None #number of slices that are stacked
self._hud = None
self._crossHairCursor = None
self._sliceIntersectionMarker = None
self._ticker = QTimer(self)
self._ticker.timeout.connect(self._tickerEvent)
#
# Setup the Viewport for fast painting
#
#With these flags turned on we could handle the drawing of the
#white background ourselves thus removing the flicker
#when scrolling fast through the slices
#self.viewport().setAttribute(Qt.WA_OpaquePaintEvent)
#self.viewport().setAttribute(Qt.WA_NoSystemBackground)
#self.viewport().setAttribute(Qt.WA_PaintOnScreen)
#self.viewport().setAutoFillBackground(False)
self.setViewportUpdateMode(QGraphicsView.MinimalViewportUpdate)
#as rescaling images is slow if done in software,
#we use Qt's built-in background caching mode so that the cached
#image need only be blitted on the screen when we only move
#the cursor
self.setCacheMode(QGraphicsView.CacheBackground)
self.setRenderHint(QPainter.Antialiasing, False)
self._crossHairCursor = CrossHairCursor(self.scene())
self._crossHairCursor.setZValue(99)
self.posModel = self.scene()._posModel
self.axis = self.scene()._along[1] - 1 # axis is 0,1,2 for X,Y,Z
self._sliceIntersectionMarker = SliceIntersectionMarker(self.scene(), self.axis, self.posModel)
self._sliceIntersectionMarker.setZValue(100)
self._sliceIntersectionMarker.setVisible(True)
self._croppingMarkers = CroppingMarkers( self.scene(), self.axis, cropModel )
#FIXME: this should be private, but is currently used from
# within the image scene renderer
self.tempImageItems = []
self._zoomFactor = 1.0
#for panning
self._lastPanPoint = QPoint()
self._dragMode = False
self._deltaPan = QPointF(0,0)
#FIXME: Is there are more elegant way to handle this?
self.setMouseTracking(True)
# invisible cursor to enable custom cursor
self._hiddenCursor = QCursor(Qt.BlankCursor)
# For screen recording BlankCursor doesn't work
#self.hiddenCursor = QCursor(Qt.ArrowCursor)
def showCropLines(self, visible):
self._croppingMarkers.setVisible(visible)
def _cleanUp(self):
self._ticker.stop()
del self._ticker
def setZoomFactor(self,zoom):
if self._hud is not None:
self._hud.zoomLevelIndicator.updateLevel(zoom)
self._zoomFactor = zoom
def indicateSlicingPositionSettled(self, settled):
self.scene().indicateSlicingPositionSettled(settled)
def viewportRect(self):
"""
Return a QRectF giving the part of the scene currently displayed in this
widget's viewport in the scene's coordinates
"""
r = self.mapToScene(self.viewport().geometry()).boundingRect()
return r
def mapScene2Data(self, pos):
return self.scene().scene2data.map(pos)
def mapMouseCoordinates2Data(self, pos):
return self.mapScene2Data(self.mapToScene(pos))
def _panning(self):
hBar = self.horizontalScrollBar()
vBar = self.verticalScrollBar()
vBar.setValue(vBar.value() - self._deltaPan.y())
if self.isRightToLeft():
hBar.setValue(hBar.value() + self._deltaPan.x())
else:
hBar.setValue(hBar.value() - self._deltaPan.x())
def _deaccelerate(self, speed, a=1, maxVal=64):
x = self._qBound(-maxVal, speed.x(), maxVal)
y = self._qBound(-maxVal, speed.y(), maxVal)
ax ,ay = self._setdeaccelerateAxAy(speed.x(), speed.y(), a)
if x > 0:
x = max(0.0, x - a*ax)
elif x < 0:
x = min(0.0, x + a*ax)
if y > 0:
y = max(0.0, y - a*ay)
elif y < 0:
y = min(0.0, y + a*ay)
return QPointF(x, y)
def _qBound(self, minVal, current, maxVal):
"""PyQt4 does not wrap the qBound function from Qt's global namespace
This is equivalent."""
return max(min(current, maxVal), minVal)
def _setdeaccelerateAxAy(self, x, y, a):
x = abs(x)
y = abs(y)
if x > y:
if y > 0:
ax = int(x / y)
if ax != 0:
return ax, 1
else:
return x/a, 1
if y > x:
if x > 0:
ay = int(y/x)
if ay != 0:
return 1, ay
else:
return 1, y/a
return 1, 1
def _tickerEvent(self):
if self._deltaPan.x() == 0.0 and self._deltaPan.y() == 0.0 or self._dragMode == True:
self._ticker.stop()
else:
self._deltaPan = self._deaccelerate(self._deltaPan)
self._panning()
def zoomOut(self):
self.doScale(0.9)
def zoomIn(self):
self.doScale(1.1)
def fitImage(self):
self.fitInView(self.sceneRect(), Qt.KeepAspectRatio)
width, height = self.size().width() / self.sceneRect().width(), self.height() / self.sceneRect().height()
self.setZoomFactor(min(width, height))
def exportImages(self):
settingsDlg = WysiwygExportOptionsDlg(self)
if (settingsDlg.exec_() == WysiwygExportOptionsDlg.Accepted):
from volumina.widgets.wysiwygExportOptionsDlg import WysiwygExportHelper
exportHelper = WysiwygExportHelper(self, settingsDlg)
exportHelper.prepareExport()
exportHelper.run()
else:
# user didn't click OK button -> do nothing
return
def centerImage(self):
self.centerOn(self.sceneRect().width()/2 + self.sceneRect().x(), self.sceneRect().height()/2 + self.sceneRect().y())
def toggleHud(self):
if self._hud is not None:
self._hud.setVisible(not self._hud.isVisible())
def setHudVisible(self, visible):
if self._hud is not None:
self._hud.setVisible(visible)
def hudVisible(self):
return self._hud.isVisible()
def focusInEvent(self, event):
self.setStyleSheet(".QFrame {border: 2px solid white; border-radius: 4px;}")
self.focusChanged.emit()
def focusOutEvent(self, event):
self.setStyleSheet(".QFrame {}")
def changeViewPort(self,qRectf):
self.fitInView(qRectf,mode = Qt.KeepAspectRatio)
width, height = self.size().width() / qRectf.width(), self.height() / qRectf.height()
self.setZoomFactor(min(width, height))
def doScale(self, factor):
self.setZoomFactor(self._zoomFactor * factor)
self.scale(factor, factor)
def doScaleTo(self, zoom=1):
factor = ( 1 / self._zoomFactor ) * zoom
self.setZoomFactor(zoom)
self.scale(factor, factor)
class ImageView2D(QGraphicsView):
focusChanged = pyqtSignal()
"""
Shows a ImageScene2D to the user and allows for interactive
scrolling, panning, zooming etc.
"""
@property
def sliceShape(self):
"""
(width, height) of the scene.
Specifying the shape is necessary to allow for correct
scrollbars
"""
return self._sliceShape
@sliceShape.setter
def sliceShape(self, s):
self._sliceShape = s
self.scene().dataShape = s
self._crossHairCursor.dataShape = s
self._sliceIntersectionMarker.dataShape = s
self._croppingMarkers.dataShape = s
@property
def hud(self):
return self._hud
@hud.setter
def hud(self, hud):
"""
Sets up a heads up display at the upper left corner of the view
hud -- a QWidget
"""
self._hud = hud
self.setLayout(QVBoxLayout())
self.layout().setContentsMargins(0,0,0,0)
self.layout().addWidget(self._hud)
self.layout().addStretch()
scene = self.scene()
hud.zoomToFitButtonClicked.connect(self.fitImage)
hud.resetZoomButtonClicked.connect(self.doScaleTo)
hud.rotLeftButtonClicked.connect(scene._onRotateLeft)
hud.rotRightButtonClicked.connect(scene._onRotateRight)
hud.swapAxesButtonClicked.connect(scene._onSwapAxes)
hud.exportButtonClicked.connect(self.exportImages)
scene.axesChanged.connect(hud.setAxes)
def __init__(self, parent, cropModel, imagescene2d):
"""
Constructs a view upon a ImageScene2D
imagescene2d -- a ImgeScene2D instance
"""
QGraphicsView.__init__(self, parent)
# We can't use OpenGL because the HUD doesn't render properly on top.
# Maybe this will be fixed in Qt5?
if False:
self.setViewport(QGLWidget())
self.setScene(imagescene2d)
self.mousePos = QPointF(0,0)
# FIXME: These int members shadow QWidget.x() and QWidget.y(), which can lead to confusion when debugging...
self.x, self.y = (0,0)
self.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
self.setVerticalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
self._isRubberBandZoom = False
self._cursorBackup = None
#these attributes are exposed as public properties above
self._sliceShape = None #2D shape of this view's shown image
self._slices = None #number of slices that are stacked
self._hud = None
self._crossHairCursor = None
self._sliceIntersectionMarker = None
self._ticker = QTimer(self)
self._ticker.timeout.connect(self._tickerEvent)
#
# Setup the Viewport for fast painting
#
#With these flags turned on we could handle the drawing of the
#white background ourselves thus removing the flicker
#when scrolling fast through the slices
#self.viewport().setAttribute(Qt.WA_OpaquePaintEvent)
#self.viewport().setAttribute(Qt.WA_NoSystemBackground)
#self.viewport().setAttribute(Qt.WA_PaintOnScreen)
#self.viewport().setAutoFillBackground(False)
self.setViewportUpdateMode(QGraphicsView.MinimalViewportUpdate)
#as rescaling images is slow if done in software,
#we use Qt's built-in background caching mode so that the cached
#image need only be blitted on the screen when we only move
#the cursor
self.setCacheMode(QGraphicsView.CacheBackground)
self.setRenderHint(QPainter.Antialiasing, False)
self._crossHairCursor = CrossHairCursor(self.scene())
self._crossHairCursor.setZValue(99)
self.posModel = self.scene()._posModel
self.axis = self.scene()._along[1] - 1 # axis is 0,1,2 for X,Y,Z
self._sliceIntersectionMarker = SliceIntersectionMarker(self.scene(), self.axis, self.posModel)
self._sliceIntersectionMarker.setZValue(100)
self._sliceIntersectionMarker.setVisible(True)
self._croppingMarkers = CroppingMarkers( self.scene(), self.axis, cropModel )
#FIXME: this should be private, but is currently used from
# within the image scene renderer
self.tempImageItems = []
self._zoomFactor = 1.0
#for panning
self._lastPanPoint = QPoint()
self._dragMode = False
self._deltaPan = QPointF(0,0)
#FIXME: Is there are more elegant way to handle this?
self.setMouseTracking(True)
# invisible cursor to enable custom cursor
self._hiddenCursor = QCursor(Qt.BlankCursor)
# For screen recording BlankCursor doesn't work
#self.hiddenCursor = QCursor(Qt.ArrowCursor)
# def paintEvent(self, event):
# start = time.time()
# super( ImageView2D, self ).paintEvent(event)
# print "painting took {} ms".format( int((time.time() - start)*1000) )
def showCropLines(self, visible):
self._croppingMarkers.setVisible(visible)
def _cleanUp(self):
self._ticker.stop()
del self._ticker
def setZoomFactor(self,zoom):
if self._hud is not None:
self._hud.zoomLevelIndicator.updateLevel(zoom)
self._zoomFactor = zoom
def indicateSlicingPositionSettled(self, settled):
self.scene().indicateSlicingPositionSettled(settled)
def viewportRect(self):
"""
Return a QRectF giving the part of the scene currently displayed in this
widget's viewport in the scene's coordinates
"""
r = self.mapToScene(self.viewport().geometry()).boundingRect()
return r
def mapScene2Data(self, pos):
return self.scene().scene2data.map(pos)
def mapMouseCoordinates2Data(self, pos):
return self.mapScene2Data(self.mapToScene(pos))
def _panning(self):
hBar = self.horizontalScrollBar()
vBar = self.verticalScrollBar()
vBar.setValue(vBar.value() - self._deltaPan.y())
if self.isRightToLeft():
hBar.setValue(hBar.value() + self._deltaPan.x())
else:
hBar.setValue(hBar.value() - self._deltaPan.x())
def _deaccelerate(self, speed, a=1, maxVal=64):
x = self._qBound(-maxVal, speed.x(), maxVal)
y = self._qBound(-maxVal, speed.y(), maxVal)
ax ,ay = self._setdeaccelerateAxAy(speed.x(), speed.y(), a)
if x > 0:
x = max(0.0, x - a*ax)
elif x < 0:
x = min(0.0, x + a*ax)
if y > 0:
y = max(0.0, y - a*ay)
elif y < 0:
y = min(0.0, y + a*ay)
return QPointF(x, y)
def _qBound(self, minVal, current, maxVal):
"""PyQt4 does not wrap the qBound function from Qt's global namespace
This is equivalent."""
return max(min(current, maxVal), minVal)
def _setdeaccelerateAxAy(self, x, y, a):
x = abs(x)
y = abs(y)
if x > y:
if y > 0:
ax = x // y
if ax != 0:
return ax, 1
else:
return x/a, 1
if y > x:
if x > 0:
ay = y//x
if ay != 0:
return 1, ay
else:
return 1, y/a
return 1, 1
def _tickerEvent(self):
if self._deltaPan.x() == 0.0 and self._deltaPan.y() == 0.0 or self._dragMode == True:
self._ticker.stop()
else:
self._deltaPan = self._deaccelerate(self._deltaPan)
self._panning()
def zoomOut(self):
self.doScale(0.9)
def zoomIn(self):
self.doScale(1.1)
def fitImage(self):
self.fitInView(self.sceneRect(), Qt.KeepAspectRatio)
width, height = self.size().width() / self.sceneRect().width(), self.height() / self.sceneRect().height()
self.setZoomFactor(min(width, height))
def exportImages(self):
settingsDlg = WysiwygExportOptionsDlg(self)
if (settingsDlg.exec_() == WysiwygExportOptionsDlg.Accepted):
from volumina.widgets.wysiwygExportOptionsDlg import WysiwygExportHelper
exportHelper = WysiwygExportHelper(self, settingsDlg)
exportHelper.prepareExport()
exportHelper.run()
else:
# user didn't click OK button -> do nothing
return
def centerImage(self):
self.centerOn(self.sceneRect().width()/2 + self.sceneRect().x(), self.sceneRect().height()/2 + self.sceneRect().y())
def toggleHud(self):
if self._hud is not None:
self._hud.setVisible(not self._hud.isVisible())
def setHudVisible(self, visible):
if self._hud is not None:
self._hud.setVisible(visible)
def hudVisible(self):
return self._hud.isVisible()
def focusInEvent(self, event):
self.setStyleSheet(".QFrame {border: 2px solid white; border-radius: 4px;}")
self.focusChanged.emit()
def focusOutEvent(self, event):
self.setStyleSheet(".QFrame {}")
def changeViewPort(self,qRectf):
self.fitInView(qRectf,mode = Qt.KeepAspectRatio)
width, height = self.size().width() / qRectf.width(), self.height() / qRectf.height()
self.setZoomFactor(min(width, height))
def doScale(self, factor):
self.setZoomFactor(self._zoomFactor * factor)
self.scale(factor, factor)
def doScaleTo(self, zoom=1):
factor = ( 1 / self._zoomFactor ) * zoom
self.setZoomFactor(zoom)
self.scale(factor, factor)