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class Element
FIELD_SEP = ':'
PROPOINT_SEP = ';'
XY_SEP = ','
EPSILON = 0.0000001
INVALID = -1
NO_PROPORTION = -1
MAX_PROPOINTS = 3 # One proportional point per chart type
attr_accessor :value, :valueColor, :valuePattern, :label, :labelColor
def initialize( value = INVALID, valueColor = Qt::gray,
valuePattern = Qt::SolidPattern,
label = nil,
labelColor = Qt::black )
init( value, valueColor, valuePattern, label, labelColor )
@propoints = []
for i in 0...MAX_PROPOINTS * 2
@propoints[i] = NO_PROPORTION
end
end
def isValid() return @value > EPSILON end
def init( value, valueColor, valuePattern,
label, labelColor )
@value = value
@valueColor = valueColor
if Qt::SolidPattern >= valuePattern || Qt::DiagCrossPattern <= valuePattern
valuePattern = Qt::SolidPattern
end
@valuePattern = valuePattern
@label = label
@labelColor = labelColor
end
def set( value = INVALID, valueColor = Qt::gray,
valuePattern = Qt::SolidPattern,
label = nil,
labelColor = Qt::black )
init( value, valueColor, valuePattern, label, labelColor )
end
def setValuePattern( valuePattern )
if valuePattern < Qt::SolidPattern.to_i || valuePattern > Qt::DiagCrossPattern.to_i
valuePattern = Qt::SolidPattern
end
@valuePattern = valuePattern
end
def proX( index )
return @propoints[2 * index]
end
def proY( index )
return @propoints[(2 * index) + 1]
end
def setProX( index, value )
@propoints[2 * index] = value
end
def setProY( index, value )
@propoints[(2 * index) + 1] = value
end
end
class Qt::TextStream
alias op_write <<
def <<( item )
if !item.kind_of? Element
return op_write(item)
end
element = item
self << element.value() << Element::FIELD_SEP <<
element.valueColor().name() << Element::FIELD_SEP <<
element.valuePattern().to_i << Element::FIELD_SEP <<
element.labelColor().name() << Element::FIELD_SEP
for i in 0...Element::MAX_PROPOINTS
self << element.proX( i ) << Element::XY_SEP << element.proY( i )
self << ( i == Element::MAX_PROPOINTS - 1 ? Element::FIELD_SEP : Element::PROPOINT_SEP )
end
self << element.label() << "\n"
return self
end
alias op_read >>
def >>( item )
if !item.kind_of? Element
return op_read(item)
end
element = item
data = readLine()
element.value = Element::INVALID
errors = 0
fields = data.split( Element::FIELD_SEP )
if fields.length() >= 4
value = fields[0].to_f
if value.nil?
errors += 1
end
valueColor = Qt::Color.new( fields[1] )
if !valueColor.isValid()
errors += 1
end
valuePattern = fields[2].to_i
if valuePattern.nil?
errors += 1
end
labelColor = Qt::Color.new( fields[3] )
if !labelColor.isValid()
errors += 1
end
propoints = fields[4].split( Element::PROPOINT_SEP )
label = data.split(Element::FIELD_SEP)[5]
if errors == 0
element.set( value, valueColor, valuePattern, label, labelColor )
i = 0
propoints.each do |point|
errors = 0
xy = point.split( Element::XY_SEP )
x = xy[0].to_f
if x.nil? || x <= 0.0 || x >= 1.0
errors += 1
end
y = xy[1].to_f
if y.nil? || y <= 0.0 || y >= 1.0
errors += 1
end
if errors > 0
x = y = Element::NO_PROPORTION
end
element.setProX( i, x )
element.setProY( i, y )
i += 1
end
end
end
return self
end
end
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