Class: TrackGraphicsPathItem

Inherits:
Qt::GraphicsPathItem
  • Object
show all
Defined in:
lib/fgmapping/main-dlg-impl.rb

Constant Summary collapse

@@nodeinfo_array = 
Array.new

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(parent) ⇒ TrackGraphicsPathItem

Returns a new instance of TrackGraphicsPathItem.



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# File 'lib/fgmapping/main-dlg-impl.rb', line 1080

def initialize(parent)
	super()
	@parent=parent
	@addToScene = true

	# needs to be embedded in other graphics element to circumvent a bug if the position of
	# the ProxyWidget is above, below 2**15 - 1, bug in QT
	@nodeinfo = Qt::GraphicsRectItem.new(0,0,100,100)
	@nodeinfo.setPen(Qt::Pen.new(Qt::NoPen))

	@nodeinfow = Qt::GraphicsProxyWidget.new(@nodeinfo)
	@nodeinfo_widget = NodeinfoWidget.new(@nodeinfo)
	@nodeinfo_widget.setAttribute(Qt::WA_Hover)
	@nodeinfow.setWidget(@nodeinfo_widget)
	@nodeinfo.setZValue(Z_VALUE_HUD)
	@nodeinfo.setAcceptHoverEvents(true)
	@nodeinfo.setVisible(false)
	setAcceptHoverEvents(true)
	setHandlesChildEvents(true)

	# store these elements in permanent array
	# otherwise GC will remove them and then causes core-dumps in QT
	@@nodeinfo_array << [@nodeinfow, @nodeinfo_widget]
end

Instance Attribute Details

#nodeinfo ⇒ Object (readonly)

Returns the value of attribute nodeinfo.



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# File 'lib/fgmapping/main-dlg-impl.rb', line 1076

def nodeinfo
  @nodeinfo
end

#nodeinfo_widget ⇒ Object (readonly)

Returns the value of attribute nodeinfo_widget.



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# File 'lib/fgmapping/main-dlg-impl.rb', line 1076

def nodeinfo_widget
  @nodeinfo_widget
end

Instance Method Details

#colorize(data, dlg) ⇒ Object 



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# File 'lib/fgmapping/main-dlg-impl.rb', line 1105

def colorize(data, dlg)
	scene=dlg.scene
	prev_x = path.elementAt(0).x
	prev_y = path.elementAt(0).y
	group = Qt::GraphicsItemGroup.new
	x = y = 0
	pen=Qt::Pen.new
	pen.setWidth(5)
	line=nil
	d=data.dup
	d.delete_if{|e| e<=0.0 }
	if d.length==0 then
		Qt::MessageBox::warning(nil, "Warning", "No elevation/speed data found in track.")
		return
	end
	max=d.max
	min=d.min
	delta=max-min
	color=nil
	1.upto(path.elementCount-2){|i|
		color=Qt::Color.new
		if data[i]>0.0 then
			color.setHsv((data[i]-min)/delta * COLORRANGE_DEG + COLOROFFSET_DEG,255,255)
		else
			color.setRgb(100,100,100)
		end
		pen.setColor(color)
		x = path.elementAt(i).x
		y = path.elementAt(i).y
		line = Qt::GraphicsLineItem.new(prev_x, prev_y, x, y)
		line.setPen(pen)
 		line.setZValue(Z_VALUE_TRACK_COLORED)
		group.addToGroup(line)
		prev_x = x
		prev_y = y
	}
		group.setZValue(Z_VALUE_TRACK_COLORED)
		scene.addItem(group)
	
end

#contextMenuEvent(contextEvent) ⇒ Object 



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# File 'lib/fgmapping/main-dlg-impl.rb', line 1146

def contextMenuEvent(contextEvent)
	dlg=contextEvent.widget.parent.parent
	entries=["Colorize Altitude", "Colorize Speed"]
	menu=Qt::Menu.new
	entries.each{|e|
		if e=="-" then
			menu.addSeparator
		else
			menu.addAction(e)
		end
	}
	sel=menu.exec(contextEvent.screenPos)
	sel=sel.text if !sel.nil?
	data=[]
	case sel
		when entries[0]
			@parent.nodes.each{|n|
				data << n.elevation
			}
			colorize(data, dlg)
			
		when entries[1]
			@parent.nodes.each{|n|
				data << n.speed
			}
			colorize(data, dlg)
			
	end # case
end

#hoverLeaveEvent(hoverEvent) ⇒ Object 



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# File 'lib/fgmapping/main-dlg-impl.rb', line 1228

def hoverLeaveEvent(hoverEvent)
#		ap "hoverleave in"
	if @nodeinfo_widget.hover_on then
		@nodeinfo_widget.hovertimer.start(HOVER_TIMER)
	end
#		ap "hoverleave out"
end

#hoverMoveEvent(hoverEvent) ⇒ Object 



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# File 'lib/fgmapping/main-dlg-impl.rb', line 1176

def hoverMoveEvent(hoverEvent)
#		ap "hovermove in"
	dlg=hoverEvent.widget.parent.parent

	if @addToScene then
		dlg.scene.addItem(@nodeinfo)
		@addToScene = false
	end
	
	if !@nodeinfo_widget.hover_on then
		@nodeinfo.setVisible(true)
		@nodeinfo_widget.hover_on = true
	end
	x=hoverEvent.pos.x
	y=hoverEvent.pos.y
	e=nil
	hit=nil
	1.upto(self.path.elementCount-1){|i|
		e=self.path.elementAt(i)
		if ((e.x - x).abs < 3) and ((e.y - y).abs < 3)then
			hit=i
			break
		end
	}
	
	if !hit.nil? and !@parent.nil? then
		n=@parent.nodes[hit]
		@nodeinfo_widget.w.lBlon.text="%.3f°" % n.lon
		@nodeinfo_widget.w.lBlat.text="%.3f°" % n.lat
		@nodeinfo_widget.w.lBalt.text="%.1fm" % n.elevation
		@nodeinfo_widget.w.lBspeed.text="%.1fkm/h" % n.speed
		@nodeinfo_widget.w.lBdist.text="%.2fkm" % (@parent.distance(n) / 1000)
		@nodeinfo_widget.w.lBtime.text=@parent.duration_str
		pos = mapToScene(hoverEvent.pos)
		if !@nodeinfo.isVisible or @nodeinfo_widget.hover_widget_pos.nil? or (!@nodeinfo_widget.hover_widget_pos.nil? \
					and Qt::LineF.new(@nodeinfo_widget.hover_widget_pos, pos).length > 30) then
			dlg.scene.items.each {|item|
				if item.kind_of? Qt::GraphicsRectItem then
					if item != @nodeinfo then
				#		item.setVisible(false)
					end
				end
			}
			@nodeinfo.setVisible(true)
			@nodeinfo_widget.hover_widget_pos=pos
			@nodeinfo.setPos(pos)
			@nodeinfo_widget.hovertimer.stop
		end
	end
#		ap "hovermove out"
end