def _writeScaleControls(self, theSvg):
"""Write the text elements that control re-scaling."""
myAttrs = {
'class': self.CLASS_TEXT_SCALE,
}
myPointP = Coord.Pt(
Coord.Dim(8.0, self.COMMON_UNITS),
Coord.Dim(4.0, self.COMMON_UNITS),
)
with SVGWriter.SVGGroup(theSvg, {'id': 'scaleGroup'}):
with SVGWriter.SVGText(theSvg, myPointP, None, None, myAttrs):
theSvg.characters('Select scale (bold selected):')
myAttrs['text-decoration'] = "underline"
myPointP = Coord.newPt(myPointP,
incX=Coord.Dim(64, 'mm'),
incY=None)
for scale in self.SCALE_FACTORS:
myAttrs['onclick'] = "scaleGraphic(%s, '%s')" % (scale, scale)
myAttrs['id'] = str(scale)
if scale == self._scale:
myAttrs['font-weight'] = 'bold'
else:
myAttrs['font-weight'] = 'normal'
text = '%d%%' % int(scale * 100)
with SVGWriter.SVGText(theSvg, myPointP, None, None, myAttrs):
theSvg.characters(text)
myPointP = Coord.newPt(myPointP,
incX=Coord.Dim(5 * len(text), 'mm'),
incY=None)
def writeAltTextAndMouseOverRect(self, theSvg, theId, theAltPt, theAltS,
theTrigPt, theTrigRect):
"""Composes and writes the (pop-up) alternate text.
Also writes a trigger rectangle."""
# Write a grouping element and give it the alternate ID
with SVGWriter.SVGGroup(theSvg, {
'id': 't%s%s' % (theId, self.ALT_ID_SUFFIX),
'opacity': '0.0'
}):
altFontSize = self.ALT_FONT_PROPERTIES[
self.ALT_FONT_FAMILY]['size']
altFontLenFactor = self.ALT_FONT_PROPERTIES[
self.ALT_FONT_FAMILY]['lenFactor']
altFontHeightFactor = self.ALT_FONT_PROPERTIES[
self.ALT_FONT_FAMILY]['heightFactor']
# Compute masking box for alternate
maxChars = max([len(s) for s in theAltS])
# Take around 80% of character length
boxWidth = Coord.Dim(altFontSize * maxChars * altFontLenFactor,
'pt')
if len(theAltS) < 2:
boxHeight = Coord.Dim(altFontSize * 2, 'pt')
else:
boxHeight = Coord.Dim(
altFontSize * len(theAltS) * altFontHeightFactor, 'pt')
boxAttrs = {'fill': self.ALT_RECT_FILL}
with SVGWriter.SVGRect(
theSvg,
theAltPt,
Coord.Box(boxWidth, boxHeight),
boxAttrs,
):
pass
# As the main text is centered and the alt text is left
# justified we need to move the text plot point left by a bit.
myAltTextPt = Coord.newPt(
theAltPt,
incX=Coord.Dim(1 * altFontSize * 3 * altFontLenFactor / 2.0,
'pt'),
incY=Coord.Dim(12, 'pt'),
)
with SVGWriter.SVGText(theSvg, myAltTextPt, 'Courier', altFontSize,
{
'font-weight': "normal",
}):
self._writeStringListToTspan(theSvg, myAltTextPt, theAltS)
# Add the trigger rectangle for writing on finalise
boxAttrs = {
'class' : self.CLASS_RECT_INVIS,
'id' : 't%s' % theId,
'onmouseover' : "swapOpacity('t%s', 't%s')" \
% (theId, theId+self.ALT_ID_SUFFIX),
'onmouseout' : "swapOpacity('t%s', 't%s')" \
% (theId, theId+self.ALT_ID_SUFFIX),
}
self._triggerS.append((theTrigPt, theTrigRect, boxAttrs))
def _writeAlternateText(self, theSvg, thePoint, theId, theText, theAltS, yOffs=Coord.Dim(0, 'pt')):
"""Composes and writes the (pop-up) alternate text.
thePoint is the physical point to locate both texts."""
# Write a grouping element and give it the alternate ID
with SVGWriter.SVGGroup(theSvg, {'id' : 't%s%s' % (theId, self.ALT_ID_SUFFIX), 'opacity' : '0.0'}):
altFontSize = self.ALT_FONT_PROPERTIES[self.ALT_FONT_FAMILY]['size']
altFontLenFactor = self.ALT_FONT_PROPERTIES[self.ALT_FONT_FAMILY]['lenFactor']
altFontHeightFactor = self.ALT_FONT_PROPERTIES[self.ALT_FONT_FAMILY]['heightFactor']
# Compute masking box for alternate
maxChars = max([len(s) for s in theAltS])
# Take around 80% of character length
boxWidth = Coord.Dim(altFontSize * maxChars * altFontLenFactor, 'pt')
if len(theAltS) < 2:
boxHeight = Coord.Dim(altFontSize * 2, 'pt')
else:
boxHeight = Coord.Dim(altFontSize * len(theAltS) * altFontHeightFactor, 'pt')
boxAttrs = { 'fill' : self.ALT_RECT_FILL }
with SVGWriter.SVGRect(
theSvg,
# Edge the plot point up and left by a bit
Coord.newPt(
thePoint,
incX=Coord.Dim(-1 * altFontSize * (1 + len(theText) * altFontLenFactor / 2.0), 'pt'),
incY=Coord.Dim(-1*altFontHeightFactor * altFontSize, 'pt') + yOffs,
),
Coord.Box(boxWidth, boxHeight),
boxAttrs,
):
pass
# As the main text is centered and the alt text is left
# justified we need to move the text plot point left by a bit.
myAltTextPt = Coord.newPt(
thePoint,
incX=Coord.Dim(-1 * altFontSize * len(theText) * altFontLenFactor / 2.0, 'pt'),
incY=yOffs,
)
with SVGWriter.SVGText(theSvg, myAltTextPt, 'Courier', altFontSize,
{
'font-weight' : "normal",
}
):
self._writeStringListToTspan(theSvg, myAltTextPt, theAltS)
def test_04(self):
"""TestSVGlWriter.test_04(): a line.
Based on http://www.w3.org/TR/2003/REC-SVG11-20030114/shapes.html#LineElement"""
myF = io.StringIO()
myViewPort = Coord.Box(
Coord.Dim(12, 'cm'),
Coord.Dim(4, 'cm'),
)
with SVGWriter.SVGWriter(myF, myViewPort) as xS:
with XmlWrite.Element(xS, 'desc'):
xS.characters(
'Example line01 - lines expressed in user coordinates')
#xS.comment(" Show outline of canvas using 'rect' element ")
myPt = Coord.Pt(Coord.baseUnitsDim(1), Coord.baseUnitsDim(1))
myBx = Coord.Box(Coord.baseUnitsDim(1198), Coord.baseUnitsDim(398))
with SVGWriter.SVGRect(xS, myPt, myBx, {
'fill': "none",
'stroke': "blue",
'stroke-width': "2"
}):
pass
# Make a group
with SVGWriter.SVGGroup(xS, {'stroke': 'green'}):
with SVGWriter.SVGLine(
xS,
Coord.Pt(Coord.baseUnitsDim(100),
Coord.baseUnitsDim(300)),
Coord.Pt(Coord.baseUnitsDim(300),
Coord.baseUnitsDim(100)),
{'stroke-width': "5"}):
pass
with SVGWriter.SVGLine(
xS,
Coord.Pt(Coord.baseUnitsDim(300),
Coord.baseUnitsDim(300)),
Coord.Pt(Coord.baseUnitsDim(500),
Coord.baseUnitsDim(100)),
{'stroke-width': "10"}):
pass
with SVGWriter.SVGLine(
xS,
Coord.Pt(Coord.baseUnitsDim(500),
Coord.baseUnitsDim(300)),
Coord.Pt(Coord.baseUnitsDim(700),
Coord.baseUnitsDim(100)),
{'stroke-width': "15"}):
pass
with SVGWriter.SVGLine(
xS,
Coord.Pt(Coord.baseUnitsDim(700),
Coord.baseUnitsDim(300)),
Coord.Pt(Coord.baseUnitsDim(900),
Coord.baseUnitsDim(100)),
{'stroke-width': "20"}):
pass
with SVGWriter.SVGLine(
xS,
Coord.Pt(Coord.baseUnitsDim(900),
Coord.baseUnitsDim(300)),
Coord.Pt(Coord.baseUnitsDim(1100),
Coord.baseUnitsDim(100)),
{'stroke-width': "25"}):
pass
#print
#print myF.getvalue()
self.assertEqual(
myF.getvalue(), """<?xml version='1.0' encoding="utf-8"?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
<svg height="4.00cm" version="1.1" width="12.00cm" xmlns="http://www.w3.org/2000/svg">
<desc>Example line01 - lines expressed in user coordinates</desc>
<rect fill="none" height="398px" stroke="blue" stroke-width="2" width="1198px" x="1px" y="1px" />
<g stroke="green">
<line stroke-width="5" x1="100px" x2="300px" y1="300px" y2="100px" />
<line stroke-width="10" x1="300px" x2="500px" y1="300px" y2="100px" />
<line stroke-width="15" x1="500px" x2="700px" y1="300px" y2="100px" />
<line stroke-width="20" x1="700px" x2="900px" y1="300px" y2="100px" />
<line stroke-width="25" x1="900px" x2="1100px" y1="300px" y2="100px" />
</g>
</svg>
""")
def _plotHistogramLegend(self, theSvg, theTpt):
"""Plot a standardised legend. This is plotted as a group within a defs."""
myDatumP = Coord.Pt(
Coord.Dim(0.0, self.COMMON_UNITS),
Coord.Dim(0.0, self.COMMON_UNITS),
)
with SVGWriter.SVGGroup(theSvg, {
'id': self.HIST_LEGEND_ID,
'opacity': '0.0'
}):
idVal = 0
# Outline rectangle
with SVGWriter.SVGRect(
theSvg,
myDatumP,
Coord.Box(
Coord.Dim(48.0, self.COMMON_UNITS),
Coord.Dim(40.0, self.COMMON_UNITS),
),
{
'fill': self.ALT_RECT_FILL,
'id': '%d' % idVal,
},
):
idVal += 2
myDatumP = Coord.newPt(
myDatumP,
incX=Coord.Dim(2.0, self.COMMON_UNITS),
incY=Coord.Dim(2.0, self.COMMON_UNITS),
)
myTokIdxS = list(range(len(self.HIST_PP_TOKEN_TYPES_COLOURS)))
if theTpt.positiveSweepDir:
myTokIdxS.reverse()
for iC in myTokIdxS:
myBox = Coord.Box(self.HIST_DEPTH, self.HIST_DEPTH)
# Convert to physical and plot
with SVGWriter.SVGRect(
theSvg,
myDatumP,
myBox,
{
'fill': self.HIST_PP_TOKEN_TYPES_COLOURS[iC][1],
'stroke': self.HIST_RECT_COLOUR_STROKE,
'stroke-width': self.HIST_RECT_STROKE_WIDTH,
'id': '%d' % idVal
},
):
idVal += 2
myTextDatumP = Coord.newPt(
myDatumP,
incX=self.HIST_DEPTH + Coord.Dim(2.0, self.COMMON_UNITS),
incY=self.HIST_DEPTH.scale(0.5),
)
with SVGWriter.SVGText(
theSvg, myTextDatumP, None, None, {
'font-family': 'Verdana',
'font-size': '10',
'dominant-baseline': 'middle',
'id': '%d' % idVal,
}):
theSvg.characters(self.HIST_PP_TOKEN_TYPES_COLOURS[iC][0])
idVal += 2
# Increment the datum
myDatumP = Coord.newPt(myDatumP,
incX=None,
incY=self.HIST_DEPTH)
def plotToFileObj(self, theFileObj, theTpt):
"""Root level call to plot to a file object. The SVG stream is
created here."""
if self._numPassesToPlotSelf < 1:
raise ValueError('No self._numPassesToPlotSelf set!')
# Make viewBox user coordinates * self.VIEWBOX_SCALE
myRootAttrs = {
# 'viewBox' : '0 0 %d %d' \
# % (
# theTpt.canvasP().width.value * self.VIEWBOX_SCALE,
# theTpt.canvasP().depth.value * self.VIEWBOX_SCALE,
# ),
'xmlns:xlink' : self.NAMESPACE_XLINK,
}
# Bit of a hacky way to add enough margin for the pop-ups or rather
# drop downs. This adds space for the bottom most boxes.
canvasY = theTpt.canvasP().depth + Coord.Dim(60, 'mm') + Coord.Dim(8, 'mm')
myCanvas = Coord.Box(
theTpt.canvasP().width + Coord.Dim(60, 'mm'),
canvasY,
)
# Shrink canvas if it is a large plot
yOffsetForScalingText = Coord.Dim(10, 'mm')
scaleIdx = self.SCALE_FACTORS.index(1)
assert scaleIdx >= 0
while scaleIdx > 0 and canvasY > self.SCALE_MAX_Y:
canvasY = canvasY.scale(0.5)
scaleIdx -= 1
self._scale = self.SCALE_FACTORS[scaleIdx]
with SVGWriter.SVGWriter(theFileObj, myCanvas, myRootAttrs, mustIndent=cpip.INDENT_ML) as myS:
# yOffsetForScalingText is applied wrong, should respect theTpt
myDatum = Coord.Pt(
CANVAS_PADDING.prev - yOffsetForScalingText,
CANVAS_PADDING.parent,
)
self.writePreamble(myS)
myS.comment(' Root position: %s, Sweep direction: %s canvas=%s datum=%s' \
% (theTpt.rootPos, theTpt.sweepDir, theTpt.canvasP(), myDatum),
newLine=True)
# Shift the drawing down a bit to make way for the scale buttons.
with SVGWriter.SVGGroup(myS, {'transform' : "translate(0, 24)"}):
with SVGWriter.SVGGroup(myS,
{
'id' : 'graphic',
'transform' : "scale(%s)" % self.SCALE_FACTORS[scaleIdx]
}):
# Apply a group element for scaling the plot
# More hackery: yOffsetForScalingText is applied wrong, should respect theTpt
with SVGWriter.SVGRect(
myS,
Coord.newPt(
Coord.zeroBaseUnitsPt(),
incX=None,
incY=yOffsetForScalingText),
theTpt.canvasP(),
{
'fill' : 'none',
'stroke' : 'grey',
'stroke-width' : '2',
},
):
pass
# Start the plot
self.plotInitialise(myS, myDatum, theTpt)
# Now plot all contents
for p in range(self._numPassesToPlotSelf):
self.plotToSVGStream(myS, myDatum, theTpt, p, [])
# Finish the plot
self.plotFinalise(myS, myDatum, theTpt)