[reportlab-users] drawing inside a table

[Robin Becker]

On 25/02/2011 10:10, Matt Folwell wrote:

> On 25/02/2011 09:58, Brian O'Reilly wrote:

>> On 11-02-24 01:22 PM, Brian O'Reilly wrote:

>>> I have a simple 3" x .75" bar graph that I want to insert into a table.

>>> I created the appropriate cell in the table to be 3" wide, but the

>>> drawing overlaps into adjacent cells... what is the trick to getting the

>>> drawing centered in the cell?

>>

>> Okay, it turns out that when the cell is exactly the same width as the

>> drawing that contains the bargraph, the layout engine overflows the

>> drawing into the column to the right. I made the table cell that

>> contains the drawing a little bit wider, and it's neatly centered. Is

>> this a bug?

>

> The dimensions of the table cell include padding, which by default is

> 6pt left and right, and 3pt top and bottom. You need to either override

> that or allow extra space.

>

> (Because the cell's left aligned, only the left passing is used to

> position your drawing)

>

>

here is an example of drawing a barchart into a cell with automatic sizing; also 
we draw an image, but you'll need your own to make this work.

#############################################################
#!/bin/env python
#Copyright ReportLab Europe Ltd. 2000-2011
#see license.txt for license details


from reportlab.graphics.charts.linecharts import HorizontalLineChart
from reportlab.graphics.shapes import Drawing, _DrawingEditorMixin
from reportlab.graphics.charts.barcharts import VerticalBarChart
class TableBarChart(_DrawingEditorMixin,Drawing):
	def __init__(self,width=400,height=200,*args,**kw):
		Drawing.__init__(self,width,height,*args,**kw)
		self.width = 136
		self.height = 140
		self._add(self,VerticalBarChart(),name='chart',validate=None,desc=None)
		self.chart.y = 20
		self.chart.width = self.width - 21
		self.chart.height = self.height - 24
		self.chart.categoryAxis.categoryNames = ['Spring','Summer','Autumn','Winter']
		self.chart.categoryAxis.labels.fontSize = 7

def main():
	from reportlab.lib.units import inch
	from reportlab.platypus.flowables import Image
	from reportlab.platypus.paragraph import Paragraph
	from reportlab.platypus.doctemplate import SimpleDocTemplate
	from reportlab.lib.styles import getSampleStyleSheet
	from reportlab.platypus.tables import Table, TableStyle, GRID_STYLE, BOX_STYLE, 
LABELED_GRID_STYLE, COLORED_GRID_STYLE, LIST_STYLE, LongTable
	from reportlab.lib import colors
	import os

	styleSheet = getSampleStyleSheet()
	story = []
	#substitute a small image here
	imFn = '/code/tools/pythonpoint/demos/leftlogo.gif'
	I = Image(imFn)
	I.drawHeight = 1.25*inch*I.drawHeight / I.drawWidth
	I.drawWidth = 1.25*inch
	P = Paragraph("<para align=center spaceb=3>The <b>ReportLab Left <font 
color=red>Logo</font></b> Image</para>", styleSheet["BodyText"])
	B = TableBarChart()
	BP = Paragraph("<para align=center spaceb=3>A bar chart in a cell.</para>", 
styleSheet["BodyText"])

	data=  [['A', 'B', 'C', Paragraph("<b>A pa<font 
color=red>r</font>a<i>graph</i></b><super><font 
color=yellow>1</font></super>",styleSheet["BodyText"]), 'D'],
			['00', '01', '02', [I,P], '04'],
			['10', '11', '12', [I,P], '14'],
			['20', '21', '22', '23', '24'],
			['30', '31', '32', '33', '34'],
			['40', '41', '42', [B,BP], '44']]

	t=Table(data,style=[('GRID',(1,1),(-2,-2),1,colors.green),
					('BOX',(0,0),(1,-1),2,colors.red),
					('LINEABOVE',(1,2),(-2,2),1,colors.blue),
					('LINEBEFORE',(2,1),(2,-2),1,colors.pink),
					('BACKGROUND', (0, 0), (0, 1), colors.pink),
					('BACKGROUND', (1, 1), (1, 2), colors.lavender),
					('BACKGROUND', (2, 2), (2, 3), colors.orange),
					('BOX',(0,0),(-1,-1),2,colors.black),
					('GRID',(0,0),(-1,-1),0.5,colors.black),
					('VALIGN',(3,0),(3,0),'BOTTOM'),
					('BACKGROUND',(3,0),(3,0),colors.limegreen),
					('BACKGROUND',(3,1),(3,1),colors.khaki),
					('ALIGN',(3,1),(3,1),'CENTER'),
					('BACKGROUND',(3,2),(3,2),colors.beige),
					('ALIGN',(3,2),(3,2),'LEFT'),
					])

	story.append(t)
	SimpleDocTemplate('table-bar-chart.pdf', showBoundary=1).build(story)

if __name__=='__main__':
	main()
#############################################################
-- 
Robin Becker