def drawSeries(self, seriesItem, from_, to):
"""When observing an measurement while it is running, new points have
to be added to an existing seriesItem. drawSeries() can be used to
display them avoiding a complete redraw of the canvas.
Setting plot().canvas().setAttribute(Qt.WA_PaintOutsidePaintEvent, True)
will result in faster painting, if the paint engine of the canvas widget
supports this feature."""
if seriesItem is None or seriesItem.plot() is None:
return
canvas = seriesItem.plot().canvas()
canvasRect = canvas.contentsRect()
plotCanvas = canvas #XXX: cast to QwtPlotCanvas
if plotCanvas and qwtHasBackingStore(plotCanvas):
painter = QPainter(plotCanvas.backingStore()) #XXX: cast plotCanvas.backingStore() to QPixmap
if self.__data.hasClipping:
painter.setClipRegion(self.__data.clipRegion)
qwtRenderItem(painter, canvasRect, seriesItem, from_, to)
if self.testAttribute(self.FullRepaint):
plotCanvas.repaint()
return
immediatePaint = True
if not canvas.testAttribute(Qt.WA_WState_InPaintEvent):
if QT_VERSION >= 0x050000 or\
not canvas.testAttribute(Qt.WA_PaintOutsidePaintEvent):
immediatePaint = False
if immediatePaint:
if not self.__data.painter.isActive():
self.reset()
self.__data.painter.begin(canvas)
canvas.installEventFilter(self)
if self.__data.hasClipping:
self.__data.painter.setClipRegion(
QRegion(canvasRect) & self.__data.clipRegion)
elif not self.__data.painter.hasClipping():
self.__data.painter.setClipRect(canvasRect)
qwtRenderItem(self.__data.painter,
canvasRect, seriesItem, from_, to)
if self.__data.attributes & self.AtomicPainter:
self.reset()
elif self.__data.hasClipping:
self.__data.painter.setClipping(False)
else:
self.reset()
self.__data.seriesItem = seriesItem
self.__data.from_ = from_
self.__data.to = to
clipRegion = QRegion(canvasRect)
if self.__data.hasClipping:
clipRegion &= self.__data.clipRegion
canvas.installEventFilter(self)
canvas.repaint(clipRegion)
canvas.removeEventFilter(self)
self.__data.seriesItem = None
def updateLayout(self):
# state = self.get_layout_state()
# if self.__layout_state is not None and\
# state == self.__layout_state:
# return
# self.__layout_state = state
self.__data.layout.activate(self, self.contentsRect())
titleRect = self.__data.layout.titleRect().toRect()
footerRect = self.__data.layout.footerRect().toRect()
scaleRect = [None] * self.axisCnt
for axisId in range(self.axisCnt):
scaleRect[axisId] = self.__data.layout.scaleRect(axisId).toRect()
legendRect = self.__data.layout.legendRect().toRect()
canvasRect = self.__data.layout.canvasRect().toRect()
if self.__data.titleLabel.text():
self.__data.titleLabel.setGeometry(titleRect)
if not self.__data.titleLabel.isVisibleTo(self):
self.__data.titleLabel.show()
else:
self.__data.titleLabel.hide()
if self.__data.footerLabel.text():
self.__data.footerLabel.setGeometry(footerRect)
if not self.__data.footerLabel.isVisibleTo(self):
self.__data.footerLabel.show()
else:
self.__data.footerLabel.hide()
for axisId in range(self.axisCnt):
if self.axisEnabled(axisId):
self.axisWidget(axisId).setGeometry(scaleRect[axisId])
if axisId in (self.xBottom, self.xTop):
r = QRegion(scaleRect[axisId])
if self.axisEnabled(self.yLeft):
r = r.subtracted(QRegion(scaleRect[self.yLeft]))
if self.axisEnabled(self.yRight):
r = r.subtracted(QRegion(scaleRect[self.yRight]))
r.translate(-scaleRect[axisId].x(), -scaleRect[axisId].y())
self.axisWidget(axisId).setMask(r)
if not self.axisWidget(axisId).isVisibleTo(self):
self.axisWidget(axisId).show()
else:
self.axisWidget(axisId).hide()
if self.__data.legend:
if self.__data.legend.isEmpty():
self.__data.legend.hide()
else:
self.__data.legend.setGeometry(legendRect)
self.__data.legend.show()
self.__data.canvas.setGeometry(canvasRect)
def __init__(self):
self.attributes = 0
self.hasClipping = False
self.seriesItem = None # QwtPlotSeriesItem
self.clipRegion = QRegion()
self.painter = QPainter()
self.from_ = None
self.to = None
def __init__(self):
self.pathlist = []
self.rectList = []
self.clipRegion = QRegion()
def activate(self, plot, plotRect, options=0x00):
self.invalidate()
rect = QRectF(plotRect)
self.__data.layoutData.init(plot, rect)
if not (options & self.IgnoreLegend) and plot.legend() and\
not plot.legend().isEmpty():
self.__data.legendRect = self.layoutLegend(options, rect)
region = QRegion(rect.toRect())
rect = region.subtracted(QRegion(
self.__data.legendRect.toRect())).boundingRect()
if self.__data.legendPos == QwtPlot.LeftLegend:
rect.setLeft(rect.left() + self.__data.spacing)
elif self.__data.legendPos == QwtPlot.RightLegend:
rect.setRight(rect.right() - self.__data.spacing)
elif self.__data.legendPos == QwtPlot.TopLegend:
rect.setTop(rect.top() + self.__data.spacing)
elif self.__data.legendPos == QwtPlot.BottomLegend:
rect.setBottom(rect.bottom() - self.__data.spacing)
# +---+-----------+---+
# | Title |
# +---+-----------+---+
# | | Axis | |
# +---+-----------+---+
# | A | | A |
# | x | Canvas | x |
# | i | | i |
# | s | | s |
# +---+-----------+---+
# | | Axis | |
# +---+-----------+---+
# | Footer |
# +---+-----------+---+
dimTitle, dimFooter, dimAxes = self.expandLineBreaks(options, rect)
if dimTitle > 0:
self.__data.titleRect.setRect(rect.left(), rect.top(),
rect.width(), dimTitle)
rect.setTop(self.__data.titleRect.bottom() + self.__data.spacing)
if self.__data.layoutData.scale[QwtPlot.yLeft].isEnabled !=\
self.__data.layoutData.scale[QwtPlot.yRight].isEnabled:
self.__data.titleRect.setX(rect.left() +
dimAxes[QwtPlot.yLeft])
self.__data.titleRect.setWidth(rect.width()\
-dimAxes[QwtPlot.yLeft]-dimAxes[QwtPlot.yRight])
if dimFooter > 0:
self.__data.footerRect.setRect(rect.left(),
rect.bottom() - dimFooter,
rect.width(), dimFooter)
rect.setBottom(self.__data.footerRect.top() - self.__data.spacing)
if self.__data.layoutData.scale[QwtPlot.yLeft].isEnabled !=\
self.__data.layoutData.scale[QwtPlot.yRight].isEnabled:
self.__data.footerRect.setX(rect.left() +
dimAxes[QwtPlot.yLeft])
self.__data.footerRect.setWidth(rect.width()\
-dimAxes[QwtPlot.yLeft]-dimAxes[QwtPlot.yRight])
self.__data.canvasRect.setRect(
rect.x() + dimAxes[QwtPlot.yLeft],
rect.y() + dimAxes[QwtPlot.xTop],
rect.width() - dimAxes[QwtPlot.yRight] - dimAxes[QwtPlot.yLeft],
rect.height() - dimAxes[QwtPlot.xBottom] - dimAxes[QwtPlot.xTop])
for axis in range(QwtPlot.axisCnt):
if dimAxes[axis]:
dim = dimAxes[axis]
scaleRect = self.__data.scaleRect[axis]
scaleRect.setRect(*self.__data.canvasRect.getRect())
if axis == QwtPlot.yLeft:
scaleRect.setX(self.__data.canvasRect.left() - dim)
scaleRect.setWidth(dim)
elif axis == QwtPlot.yRight:
scaleRect.setX(self.__data.canvasRect.right())
scaleRect.setWidth(dim)
elif axis == QwtPlot.xBottom:
scaleRect.setY(self.__data.canvasRect.bottom())
scaleRect.setHeight(dim)
elif axis == QwtPlot.xTop:
scaleRect.setY(self.__data.canvasRect.top() - dim)
scaleRect.setHeight(dim)
scaleRect = scaleRect.normalized()
# +---+-----------+---+
# | <- Axis -> |
# +-^-+-----------+-^-+
# | | | | | |
# | | | |
# | A | | A |
# | x | Canvas | x |
# | i | | i |
# | s | | s |
# | | | |
# | | | | | |
# +-V-+-----------+-V-+
# | <- Axis -> |
# +---+-----------+---+
self.alignScales(options, self.__data.canvasRect,
self.__data.scaleRect)
if not self.__data.legendRect.isEmpty():
self.__data.legendRect = self.alignLegend(self.__data.canvasRect,
self.__data.legendRect)
def activate(self, plot, plotRect, options=0x00):
"""
Recalculate the geometry of all components.
:param qwt.plot.QwtPlot plot: Plot to be layout
:param QRectF plotRect: Rectangle where to place the components
:param options: Layout options
"""
self.invalidate()
rect = QRectF(plotRect)
self.__data.layoutData.init(plot, rect)
if not (options & self.IgnoreLegend) and plot.legend() and\
not plot.legend().isEmpty():
self.__data.legendRect = self.layoutLegend(options, rect)
region = QRegion(rect.toRect())
rect = region.subtracted(QRegion(self.__data.legendRect.toRect())
).boundingRect()
if self.__data.legendPos == QwtPlot.LeftLegend:
rect.setLeft(rect.left()+self.__data.spacing)
elif self.__data.legendPos == QwtPlot.RightLegend:
rect.setRight(rect.right()-self.__data.spacing)
elif self.__data.legendPos == QwtPlot.TopLegend:
rect.setTop(rect.top()+self.__data.spacing)
elif self.__data.legendPos == QwtPlot.BottomLegend:
rect.setBottom(rect.bottom()-self.__data.spacing)
# +---+-----------+---+
# | Title |
# +---+-----------+---+
# | | Axis | |
# +---+-----------+---+
# | A | | A |
# | x | Canvas | x |
# | i | | i |
# | s | | s |
# +---+-----------+---+
# | | Axis | |
# +---+-----------+---+
# | Footer |
# +---+-----------+---+
# title, footer and axes include text labels. The height of each
# label depends on its line breaks, that depend on the width
# for the label. A line break in a horizontal text will reduce
# the available width for vertical texts and vice versa.
# expandLineBreaks finds the height/width for title, footer and axes
# including all line breaks.
dimTitle, dimFooter, dimAxes = self.expandLineBreaks(options, rect)
if dimTitle > 0:
self.__data.titleRect.setRect(rect.left(), rect.top(),
rect.width(), dimTitle)
rect.setTop(self.__data.titleRect.bottom()+self.__data.spacing)
if self.__data.layoutData.scale[QwtPlot.yLeft].isEnabled !=\
self.__data.layoutData.scale[QwtPlot.yRight].isEnabled:
self.__data.titleRect.setX(rect.left()+dimAxes[QwtPlot.yLeft])
self.__data.titleRect.setWidth(rect.width()\
-dimAxes[QwtPlot.yLeft]-dimAxes[QwtPlot.yRight])
if dimFooter > 0:
self.__data.footerRect.setRect(rect.left(),
rect.bottom()-dimFooter, rect.width(), dimFooter)
rect.setBottom(self.__data.footerRect.top()-self.__data.spacing)
if self.__data.layoutData.scale[QwtPlot.yLeft].isEnabled !=\
self.__data.layoutData.scale[QwtPlot.yRight].isEnabled:
self.__data.footerRect.setX(rect.left()+dimAxes[QwtPlot.yLeft])
self.__data.footerRect.setWidth(rect.width()\
-dimAxes[QwtPlot.yLeft]-dimAxes[QwtPlot.yRight])
self.__data.canvasRect.setRect(
rect.x()+dimAxes[QwtPlot.yLeft],
rect.y()+dimAxes[QwtPlot.xTop],
rect.width()-dimAxes[QwtPlot.yRight]-dimAxes[QwtPlot.yLeft],
rect.height()-dimAxes[QwtPlot.xBottom]-dimAxes[QwtPlot.xTop])
for axis in QwtPlot.validAxes:
if dimAxes[axis]:
dim = dimAxes[axis]
scaleRect = self.__data.scaleRect[axis]
scaleRect.setRect(*self.__data.canvasRect.getRect())
if axis == QwtPlot.yLeft:
scaleRect.setX(self.__data.canvasRect.left()-dim)
scaleRect.setWidth(dim)
elif axis == QwtPlot.yRight:
scaleRect.setX(self.__data.canvasRect.right())
scaleRect.setWidth(dim)
elif axis == QwtPlot.xBottom:
scaleRect.setY(self.__data.canvasRect.bottom())
scaleRect.setHeight(dim)
elif axis == QwtPlot.xTop:
scaleRect.setY(self.__data.canvasRect.top()-dim)
scaleRect.setHeight(dim)
scaleRect = scaleRect.normalized()
# +---+-----------+---+
# | <- Axis -> |
# +-^-+-----------+-^-+
# | | | | | |
# | | | |
# | A | | A |
# | x | Canvas | x |
# | i | | i |
# | s | | s |
# | | | |
# | | | | | |
# +-V-+-----------+-V-+
# | <- Axis -> |
# +---+-----------+---+
# The ticks of the axes - not the labels above - should
# be aligned to the canvas. So we try to use the empty
# corners to extend the axes, so that the label texts
# left/right of the min/max ticks are moved into them.
self.alignScales(options, self.__data.canvasRect,
self.__data.scaleRect)
if not self.__data.legendRect.isEmpty():
self.__data.legendRect = self.alignLegend(self.__data.canvasRect,
self.__data.legendRect)
def activate(self, plot, plotRect, options=0x00):
self.invalidate()
rect = QRectF(plotRect)
self.__data.layoutData.init(plot, rect)
if not (options & self.IgnoreLegend) and plot.legend() and\
not plot.legend().isEmpty():
self.__data.legendRect = self.layoutLegend(options, rect)
region = QRegion(rect.toRect())
rect = region.subtracted(QRegion(self.__data.legendRect.toRect())
).boundingRect()
if self.__data.legendPos == QwtPlot.LeftLegend:
rect.setLeft(rect.left()+self.__data.spacing)
elif self.__data.legendPos == QwtPlot.RightLegend:
rect.setRight(rect.right()-self.__data.spacing)
elif self.__data.legendPos == QwtPlot.TopLegend:
rect.setTop(rect.top()+self.__data.spacing)
elif self.__data.legendPos == QwtPlot.BottomLegend:
rect.setBottom(rect.bottom()-self.__data.spacing)
# +---+-----------+---+
# | Title |
# +---+-----------+---+
# | | Axis | |
# +---+-----------+---+
# | A | | A |
# | x | Canvas | x |
# | i | | i |
# | s | | s |
# +---+-----------+---+
# | | Axis | |
# +---+-----------+---+
# | Footer |
# +---+-----------+---+
dimTitle, dimFooter, dimAxes = self.expandLineBreaks(options, rect)
if dimTitle > 0:
self.__data.titleRect.setRect(rect.left(), rect.top(),
rect.width(), dimTitle)
rect.setTop(self.__data.titleRect.bottom()+self.__data.spacing)
if self.__data.layoutData.scale[QwtPlot.yLeft].isEnabled !=\
self.__data.layoutData.scale[QwtPlot.yRight].isEnabled:
self.__data.titleRect.setX(rect.left()+dimAxes[QwtPlot.yLeft])
self.__data.titleRect.setWidth(rect.width()\
-dimAxes[QwtPlot.yLeft]-dimAxes[QwtPlot.yRight])
if dimFooter > 0:
self.__data.footerRect.setRect(rect.left(),
rect.bottom()-dimFooter, rect.width(), dimFooter)
rect.setBottom(self.__data.footerRect.top()-self.__data.spacing)
if self.__data.layoutData.scale[QwtPlot.yLeft].isEnabled !=\
self.__data.layoutData.scale[QwtPlot.yRight].isEnabled:
self.__data.footerRect.setX(rect.left()+dimAxes[QwtPlot.yLeft])
self.__data.footerRect.setWidth(rect.width()\
-dimAxes[QwtPlot.yLeft]-dimAxes[QwtPlot.yRight])
self.__data.canvasRect.setRect(
rect.x()+dimAxes[QwtPlot.yLeft],
rect.y()+dimAxes[QwtPlot.xTop],
rect.width()-dimAxes[QwtPlot.yRight]-dimAxes[QwtPlot.yLeft],
rect.height()-dimAxes[QwtPlot.xBottom]-dimAxes[QwtPlot.xTop])
for axis in range(QwtPlot.axisCnt):
if dimAxes[axis]:
dim = dimAxes[axis]
scaleRect = self.__data.scaleRect[axis]
scaleRect.setRect(*self.__data.canvasRect.getRect())
if axis == QwtPlot.yLeft:
scaleRect.setX(self.__data.canvasRect.left()-dim)
scaleRect.setWidth(dim)
elif axis == QwtPlot.yRight:
scaleRect.setX(self.__data.canvasRect.right())
scaleRect.setWidth(dim)
elif axis == QwtPlot.xBottom:
scaleRect.setY(self.__data.canvasRect.bottom())
scaleRect.setHeight(dim)
elif axis == QwtPlot.xTop:
scaleRect.setY(self.__data.canvasRect.top()-dim)
scaleRect.setHeight(dim)
scaleRect = scaleRect.normalized()
# +---+-----------+---+
# | <- Axis -> |
# +-^-+-----------+-^-+
# | | | | | |
# | | | |
# | A | | A |
# | x | Canvas | x |
# | i | | i |
# | s | | s |
# | | | |
# | | | | | |
# +-V-+-----------+-V-+
# | <- Axis -> |
# +---+-----------+---+
self.alignScales(options, self.__data.canvasRect,
self.__data.scaleRect)
if not self.__data.legendRect.isEmpty():
self.__data.legendRect = self.alignLegend(self.__data.canvasRect,
self.__data.legendRect)
