def colorBarRect(self, rect):
"""
Calculate the the rectangle for the color bar
:param QRectF rect: Bounding rectangle for all components of the scale
:return: Rectangle for the color bar
"""
cr = QRectF(rect)
if self.__data.scaleDraw.orientation() == Qt.Horizontal:
cr.setLeft(cr.left() + self.__data.borderDist[0])
cr.setWidth(cr.width() - self.__data.borderDist[1] + 1)
else:
cr.setTop(cr.top() + self.__data.borderDist[0])
cr.setHeight(cr.height() - self.__data.borderDist[1] + 1)
sda = self.__data.scaleDraw.alignment()
if sda == QwtScaleDraw.LeftScale:
cr.setLeft(cr.right() - self.__data.margin -
self.__data.colorBar.width)
cr.setWidth(self.__data.colorBar.width)
elif sda == QwtScaleDraw.RightScale:
cr.setLeft(cr.left() + self.__data.margin)
cr.setWidth(self.__data.colorBar.width)
elif sda == QwtScaleDraw.BottomScale:
cr.setTop(cr.top() + self.__data.margin)
cr.setHeight(self.__data.colorBar.width)
elif sda == QwtScaleDraw.TopScale:
cr.setTop(cr.bottom() - self.__data.margin -
self.__data.colorBar.width)
cr.setHeight(self.__data.colorBar.width)
return cr
def qwtDrawStar1Symbols(painter, points, numPoints, symbol):
size = symbol.size()
painter.setPen(symbol.pen())
sqrt1_2 = np.sqrt(0.5)
r = QRectF(0, 0, size.width(), size.height())
for pos in points:
r.moveCenter(pos.toPoint())
c = QPointF(r.center())
d1 = r.width() / 2.0 * (1.0 - sqrt1_2)
painter.drawLine(r.left() + d1, r.top() + d1, r.right() - d1, r.bottom() - d1)
painter.drawLine(r.left() + d1, r.bottom() - d1, r.right() - d1, r.top() + d1)
painter.drawLine(c.x(), r.top(), c.x(), r.bottom())
painter.drawLine(r.left(), c.y(), r.right(), c.y())
class HLine(ChartItem):
""" Simple horizontal line without horizontal bounds.
:param parent: Parent item.
"""
def __init__(self, parent=None):
super(HLine, self).__init__(parent)
self.chartItemFlags = ChartItemFlags.FLAG_NO_AUTO_RANGE
self._y = None
self._label = None
self._pen = QPen(QBrush(Qt.green), 1.0, Qt.SolidLine)
self._pen.setCosmetic(True)
self._brush = QBrush(QColor(255, 255, 255, 0))
finfo = np.finfo(np.float32)
self.b_rect = QRectF(finfo.min / 2.0, 0, finfo.max, 0)
@property
def label(self):
return self._label
def setY(self, y, label=None, color=QColor(Qt.red)):
""" Sets the Hline's y value
:param y: Ordinate value
:param label:
:param color:
"""
self._y = y
self.setPos(QPointF(0, self._y))
if label is not None:
self._label = label
self._color = color
self._pen = QPen(QBrush(color), 1.0, Qt.SolidLine)
self._pen.setCosmetic(True)
self._brush = QBrush(QColor(255, 255, 255, 0))
def visibleRangeChanged(self, rect):
b = min(rect.left(), rect.right())
self.b_rect = QRectF(b - 10, 0, rect.width() + 20, 0)
self.prepareGeometryChange()
def paint(self, p=QPainter(), o=QStyleOptionGraphicsItem(), widget=None):
# p.setRenderHint(QPainter.N)
p.setPen(self._pen)
p.setBrush(self._brush)
p.drawLine(
QLineF(QPointF(self.b_rect.left(), 0),
QPointF(self.b_rect.right(), 0)))
super(HLine, self).paint(p, o, widget)
def __del__(self):
_log.debug("Finalize HLine {}".format(self))
def qwtDrawSvgSymbols(painter, points, numPoints, renderer, symbol):
if renderer is None or not renderer.isValid():
return
viewBox = QRectF(renderer.viewBoxF())
if viewBox.isEmpty():
return
sz = QSizeF(symbol.size())
if not sz.isValid():
sz = viewBox.size()
sx = sz.width() / viewBox.width()
sy = sz.height() / viewBox.height()
pinPoint = QPointF(viewBox.center())
if symbol.isPinPointEnabled():
pinPoint = symbol.pinPoint()
dx = sx * (pinPoint.x() - viewBox.left())
dy = sy * (pinPoint.y() - viewBox.top())
for pos in points:
x = pos.x() - dx
y = pos.y() - dy
renderer.render(painter, QRectF(x, y, sz.width(), sz.height()))
def draw(self, painter):
"""
Draw the scale
:param QPainter painter: Painter
"""
self.__data.scaleDraw.draw(painter, self.palette())
if (self.__data.colorBar.isEnabled and self.__data.colorBar.width > 0
and self.__data.colorBar.interval.isValid()):
self.drawColorBar(painter, self.colorBarRect(self.contentsRect()))
r = QRectF(self.contentsRect())
if self.__data.scaleDraw.orientation() == Qt.Horizontal:
r.setLeft(r.left() + self.__data.borderDist[0])
r.setWidth(r.width() - self.__data.borderDist[1])
else:
r.setTop(r.top() + self.__data.borderDist[0])
r.setHeight(r.height() - self.__data.borderDist[1])
if not self.__data.title.isEmpty():
self.drawTitle(painter, self.__data.scaleDraw.alignment(), r)
def setCornerRects(self, path):
pos = QPointF(0.0, 0.0)
for i in range(path.elementCount()):
el = path.elementAt(i)
if el.type in (QPainterPath.MoveToElement, QPainterPath.LineToElement):
pos.setX(el.x)
pos.setY(el.y)
elif el.type == QPainterPath.CurveToElement:
r = QRectF(pos, QPointF(el.x, el.y))
self.clipRects += [r.normalized()]
pos.setX(el.x)
pos.setY(el.y)
elif el.type == QPainterPath.CurveToDataElement:
if self.clipRects:
r = self.clipRects[-1]
r.setCoords(
min([r.left(), el.x]),
min([r.top(), el.y]),
max([r.right(), el.x]),
max([r.bottom(), el.y]),
)
self.clipRects[-1] = r.normalized()
def boundingRect(self):
"""
Calculate the bounding rectangle for a symbol at position (0,0).
:return: Bounding rectangle
"""
rect = QRectF()
pinPointTranslation = False
if self.__data.style in (QwtSymbol.Ellipse, QwtSymbol.Rect,
QwtSymbol.Hexagon):
pw = 0.0
if self.__data.pen.style() != Qt.NoPen:
pw = max([self.__data.pen.widthF(), 1.0])
rect.setSize(self.__data.size + QSizeF(pw, pw))
rect.moveCenter(QPointF(0.0, 0.0))
elif self.__data.style in (
QwtSymbol.XCross,
QwtSymbol.Diamond,
QwtSymbol.Triangle,
QwtSymbol.UTriangle,
QwtSymbol.DTriangle,
QwtSymbol.RTriangle,
QwtSymbol.LTriangle,
QwtSymbol.Star1,
QwtSymbol.Star2,
):
pw = 0.0
if self.__data.pen.style() != Qt.NoPen:
pw = max([self.__data.pen.widthF(), 1.0])
rect.setSize(QSizeF(self.__data.size) + QSizeF(2 * pw, 2 * pw))
rect.moveCenter(QPointF(0.0, 0.0))
elif self.__data.style == QwtSymbol.Path:
if self.__data.path.graphic.isNull():
self.__data.path.graphic = qwtPathGraphic(
self.__data.path.path, self.__data.pen, self.__data.brush)
rect = qwtScaleBoundingRect(self.__data.path.graphic,
self.__data.size)
pinPointTranslation = True
elif self.__data.style == QwtSymbol.Pixmap:
if self.__data.size.isEmpty():
rect.setSize(self.__data.pixmap.pixmap.size())
else:
rect.setSize(self.__data.size)
pinPointTranslation = True
elif self.__data.style == QwtSymbol.Graphic:
rect = qwtScaleBoundingRect(self.__data.graphic.graphic,
self.__data.size)
pinPointTranslation = True
elif self.__data.style == QwtSymbol.SvgDocument:
if self.__data.svg.renderer is not None:
rect = self.__data.svg.renderer.viewBoxF()
if self.__data.size.isValid() and not rect.isEmpty():
sz = QSizeF(rect.size())
sx = self.__data.size.width() / sz.width()
sy = self.__data.size.height() / sz.height()
transform = QTransform()
transform.scale(sx, sy)
rect = transform.mapRect(rect)
pinPointTranslation = True
else:
rect.setSize(self.__data.size)
rect.moveCenter(QPointF(0.0, 0.0))
if pinPointTranslation:
pinPoint = QPointF(0.0, 0.0)
if self.__data.isPinPointEnabled:
pinPoint = rect.center() - self.__data.pinPoint
rect.moveCenter(pinPoint)
r = QRect()
r.setLeft(np.floor(rect.left()))
r.setTop(np.floor(rect.top()))
r.setRight(np.floor(rect.right()))
r.setBottom(np.floor(rect.bottom()))
if self.__data.style != QwtSymbol.Pixmap:
r.adjust(-1, -1, 1, 1)
return r
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.AXES:
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)
