#!/usr/bin/env python
#copyright ReportLab Inc. 2000-2001
#see license.txt for license details
#history http://cvs.sourceforge.net/cgi-bin/cvsweb.cgi/reportlab/graphics/testshapes.py?cvsroot=reportlab
#$Header: /cvsroot/reportlab/reportlab/graphics/testshapes.py,v 1.15 2001/11/28 09:21:07 rgbecker Exp $

# testshapes.py - draws shapes onto a PDF canvas.

"""
Execute the script to see some test drawings.

This contains a number of routines to generate test drawings
for reportlab/graphics.  For now many of them are contrived,
but we will expand them to try and trip up any parser.
Feel free to add more.
"""

__version__ = ''' $Id $ '''


import os, sys

from reportlab.lib import colors
from reportlab.lib.units import cm
from reportlab.pdfgen.canvas import Canvas
from reportlab.pdfbase.pdfmetrics import stringWidth
from reportlab.platypus import Flowable
from reportlab.graphics.shapes import *
from reportlab.graphics.renderPDF import _PDFRenderer
from reportlab.test import unittest


#########################################################
#
#	Collections of shape drawings.
#
#########################################################


def getFailedDrawing(funcName):
	"""Generate a drawing in case something goes really wrong.

	This will create a drawing to be displayed whenever some
	other drawing could not be executed, because the generating
	function does something terribly wrong! The box contains
	an attention triangle, plus some error message.
	"""
	
	D = Drawing(400, 200)

	points = [200,170, 140,80, 260,80]
	D.add(Polygon(points,
				  strokeWidth=0.5*cm,
				  strokeColor=colors.red,
				  fillColor=colors.yellow))

	s = String(200, 40,
			   "Error in generating function '%s'!" % funcName,
			   textAnchor='middle')
	D.add(s)

	return D


# These are the real drawings to be eye-balled.

def getDrawing01():
	"""Hello World, on a rectangular background.

	The rectangle's fillColor is yellow.
	The string's fillColor is red.
	"""
	
	D = Drawing(400, 200)
	D.add(Rect(50, 50, 300, 100, fillColor=colors.yellow))
	D.add(String(180,100, 'Hello World', fillColor=colors.red))

	return D


def getDrawing02():
	"""Various Line shapes.

	The lines are blue and their strokeWidth is 5 mm.
	One line has a strokeDashArray set to [5, 10, 15].
	"""
	
	D = Drawing(400, 200)
	D.add(Line(50,50, 300,100,
			   strokeColor=colors.blue,
			   strokeWidth=0.5*cm,
			   ))
	D.add(Line(50,100, 300,50,
			   strokeColor=colors.blue,
			   strokeWidth=0.5*cm,
			   strokeDashArray=[5, 10, 15],
			   ))

	#x = 1/0 # Comment this to see the actual drawing!

	return D


def getDrawing03():
	"""Text strings in various sizes and different fonts.

	Font size increases from 12 to 36 and from bottom left
	to upper right corner.	The first ones should be in
	Times-Roman.  Finally, a solitary Courier string at
	the top right corner.
	"""
	
	D = Drawing(400, 200)
	for size in range(12, 36, 4):
		D.add(String(10+size*2,
					 10+size*2,
					 'Hello World',
					 fontName='Times-Roman',
					 fontSize=size))

	D.add(String(150, 150,
				 'Hello World',
				 fontName='Courier',
				 fontSize=36))
	return D


def getDrawing04():
	"""Text strings in various colours.

	Colours are blue, yellow and red from bottom left
	to upper right.
	"""
	
	D = Drawing(400, 200)
	i = 0
	for color in (colors.blue, colors.yellow, colors.red):
		D.add(String(50+i*30, 50+i*30,
					 'Hello World', fillColor=color))
		i = i + 1

	return D


def getDrawing05():
	"""Text strings with various anchors (alignments).

	Text alignment conforms to the anchors in the left column.
	"""
	
	D = Drawing(400, 200)

	lineX = 250
	D.add(Line(lineX,10, lineX,190, strokeColor=colors.gray))

	y = 130
	for anchor in ('start', 'middle', 'end'):
		D.add(String(lineX, y, 'Hello World', textAnchor=anchor))
		D.add(String(50, y, anchor + ':'))
		y = y - 30

	return D


def getDrawing06():
	"""This demonstrates all the basic shapes at once.

	There are no groups or references.
	Each solid shape should have a purple fill.
	"""

	purple = colors.purple
	purple = colors.green
	
	D = Drawing(400, 200) #, fillColor=purple)
	
	D.add(Line(10,10, 390,190))

	D.add(Circle(100,100,20, fillColor=purple))
	D.add(Circle(200,100,40, fillColor=purple))
	D.add(Circle(300,100,30, fillColor=purple))

	D.add(Wedge(330,100,40, -10,40, fillColor=purple))

	D.add(PolyLine([120,10, 130,20, 140,10, 150,20, 160,10,
					170,20, 180,10, 190,20, 200,10], fillColor=purple))

	D.add(Polygon([300,20, 350,20, 390,80, 300,75, 330,40], fillColor=purple))

	D.add(Ellipse(50,150, 40, 20, fillColor=purple))

	D.add(Rect(120,150, 60,30,
			   strokeWidth=10,
			   strokeColor=colors.yellow,
			   fillColor=purple))  #square corners
	
	D.add(Rect(220, 150, 60, 30, 10, 10, fillColor=purple))  #round corners    

	D.add(String(10,50, 'Basic Shapes', fillColor=colors.black))

	return D

def getDrawing07():
	"""This tests the ability to translate and rotate groups.  The first set of axes should be
	near the bottom left of the drawing.  The second should be rotated counterclockwise
	by 15 degrees.	The third should be rotated by 30 degrees."""
	D = Drawing(400, 200)

	Axis = Group(
		Line(0,0,100,0), #x axis
		Line(0,0,0,50),   # y axis
		Line(0,10,10,10), #ticks on y axis
		Line(0,20,10,20),
		Line(0,30,10,30),
		Line(0,40,10,40),
		Line(10,0,10,10), #ticks on x axis
		Line(20,0,20,10), 
		Line(30,0,30,10), 
		Line(40,0,40,10), 
		Line(50,0,50,10), 
		Line(60,0,60,10), 
		Line(70,0,70,10), 
		Line(80,0,80,10), 
		Line(90,0,90,10),
		String(20, 35, 'Axes', fill=colors.black)
		)

	firstAxisGroup = Group(Axis)
	firstAxisGroup.translate(10,10)
	D.add(firstAxisGroup)
	
	secondAxisGroup = Group(Axis)
	secondAxisGroup.translate(150,10)
	secondAxisGroup.rotate(15)
	
	D.add(secondAxisGroup)


	thirdAxisGroup = Group(Axis, transform=mmult(translate(300,10), rotate(30)))
	D.add(thirdAxisGroup)
   
	return D


def getDrawing08():
	"""This tests the ability to scale coordinates. The bottom left set of axes should be
	near the bottom left of the drawing.  The bottom right should be stretched vertically
	by a factor of 2.  The top left one should be stretched horizontally by a factor of 2.
	The top right should have the vertical axiss leaning over to the right by 30 degrees."""
	D = Drawing(400, 200)

	Axis = Group(
		Line(0,0,100,0), #x axis
		Line(0,0,0,50),   # y axis
		Line(0,10,10,10), #ticks on y axis
		Line(0,20,10,20),
		Line(0,30,10,30),
		Line(0,40,10,40),
		Line(10,0,10,10), #ticks on x axis
		Line(20,0,20,10), 
		Line(30,0,30,10), 
		Line(40,0,40,10), 
		Line(50,0,50,10), 
		Line(60,0,60,10), 
		Line(70,0,70,10), 
		Line(80,0,80,10), 
		Line(90,0,90,10),
		String(20, 35, 'Axes', fill=colors.black)
		)

	firstAxisGroup = Group(Axis)
	firstAxisGroup.translate(10,10)
	D.add(firstAxisGroup)
	
	secondAxisGroup = Group(Axis)
	secondAxisGroup.translate(150,10)
	secondAxisGroup.scale(1,2)
	D.add(secondAxisGroup)
	
	thirdAxisGroup = Group(Axis)
	thirdAxisGroup.translate(10,125)
	thirdAxisGroup.scale(2,1)
	D.add(thirdAxisGroup)

	fourthAxisGroup = Group(Axis)
	fourthAxisGroup.translate(250,125)
	fourthAxisGroup.skew(30,0)
	D.add(fourthAxisGroup)

	
	return D

def getDrawing09():
	"""This tests rotated strings

	Some renderers will have a separate mechanism for font drawing.  This test
	just makes sure strings get transformed the same way as regular graphics."""
	D = Drawing(400, 200)

	fontName = "Times-Roman"
	fontSize = 12
	text = "I should be totally horizontal and enclosed in a box"
	textWidth = stringWidth(text, fontName, fontSize)


	g1 = Group(
			String(20, 20, text, fontName=fontName, fontSize = fontSize),
			Rect(18, 18, textWidth + 4, fontSize + 4, fillColor=None)
			)
	D.add(g1)

	text = "I should slope up by 15 degrees, so my right end is higher than my left"
	textWidth = stringWidth(text, fontName, fontSize)
	g2 = Group(
			String(20, 20, text, fontName=fontName, fontSize = fontSize),
			Rect(18, 18, textWidth + 4, fontSize + 4, fillColor=None)
			)
	g2.translate(0, 50)
	g2.rotate(15)
	D.add(g2)

	return D

def getDrawing10():
	"""This tests nested groups with multiple levels of coordinate transformation.
	Each box should be staggered up and to the right, moving by 25 points each time."""
	D = Drawing(400, 200)

	fontName = "Times-Roman"
	fontSize = 12

	g1 = Group(
			Rect(0, 0, 100, 20, fillColor=colors.yellow),
			String(5, 5, 'Text in the box', fontName=fontName, fontSize = fontSize)
			)
	D.add(g1)

	g2 = Group(g1, transform = translate(25,25))
	D.add(g2)
	
	g3 = Group(g2, transform = translate(25,25))
	D.add(g3)

	g4 = Group(g3, transform = translate(25,25))
	D.add(g4)

		
	return D

from widgets.signsandsymbols import SmileyFace
def getDrawing11():
	'''test of anchoring'''
	def makeSmiley(x, y, size, color):
		"Make a smiley data item representation."
		d = size
		s = SmileyFace()
		s.fillColor = color
		s.x = x-d
		s.y = y-d
		s.size = d*2
		return s

	D = Drawing(400, 200) #, fillColor=colors.purple)
	g = Group(transform=(1,0,0,1,0,0))
	g.add(makeSmiley(100,100,10,colors.red))
	g.add(Line(90,100,110,100,strokeColor=colors.green))
	g.add(Line(100,90,100,110,strokeColor=colors.green))
	D.add(g)
	g = Group(transform=(2,0,0,2,100,-100))
	g.add(makeSmiley(100,100,10,colors.blue))
	g.add(Line(90,100,110,100,strokeColor=colors.green))
	g.add(Line(100,90,100,110,strokeColor=colors.green))
	D.add(g)
	g = Group(transform=(2,0,0,2,0,0))
	return D


def getDrawing12():
	"""Text strings in a non-standard font.
	All that is required is to place the .afm and .pfb files
	on the font patch given in rl_config.py,
	for example in reportlab/lib/fonts/.
	"""
	faceName = "LettErrorRobot-Chrome"
	D = Drawing(400, 200)
	for size in range(12, 36, 4):
		D.add(String(10+size*2,
					 10+size*2,
					 'Hello World',
					 fontName=faceName,
					 fontSize=size))
	return D

def getAllFunctionDrawingNames():
	"Get a list of drawing function names from somewhere."

	funcNames = []

	# Here we get the names from the global name space.
	symbols = globals().keys()
	symbols.sort()
	for funcName in symbols:
		if funcName[0:10] == 'getDrawing':
			funcNames.append(funcName)

	return funcNames

def _evalFuncDrawing(name, D, l=None, g=None):
	try:
		d = eval(name + '()', g or globals(), l or locals())
	except:
		d = getFailedDrawing(name)
	D.append((d, eval(name + '.__doc__'), name[3:]))

def getAllTestDrawings():
	D = []
	for f in getAllFunctionDrawingNames():
		_evalFuncDrawing(f,D)
	return D

def writePDF(drawings):
	"Create and save a PDF file containing some drawings."
	
	pdfPath = os.path.splitext(sys.argv[0])[0] + '.pdf'
	c = Canvas(pdfPath)
	c.setFont('Times-Roman', 32)
	c.drawString(80, 750, 'ReportLab Graphics-Shapes Test')

	# Print drawings in a loop, with their doc strings.
	c.setFont('Times-Roman', 12)
	y = 740
	i = 1
	for (drawing, docstring, funcname) in drawings:
		if y < 300:  # Allows 5-6 lines of text.
			c.showPage()
			y = 740
		# Draw a title.
		y = y - 30
		c.setFont('Times-BoldItalic',12)
		c.drawString(80, y, '%s (#%d)' % (funcname, i))
		c.setFont('Times-Roman',12)
		y = y - 14
		textObj = c.beginText(80, y)
		textObj.textLines(docstring)
		c.drawText(textObj)
		y = textObj.getY()
		y = y - drawing.height
		drawing.drawOn(c, 80, y)
		i = i + 1

	c.save()
	print 'wrote %s ' % pdfPath
		

class ShapesTestCase(unittest.TestCase):
	"Test generating all kinds of shapes."

	def setUp(self):
		"Prepare some things before the tests start."

		self.funcNames = getAllFunctionDrawingNames()
		self.drawings = []


	def tearDown(self):
		"Do what has to be done after the tests are over."

		writePDF(self.drawings)
	

	# This should always succeed. If each drawing would be
	# wrapped in a dedicated test method like this one, it
	# would be possible to have a count for wrong tests
	# as well... Something like this is left for later...
	def testAllDrawings(self):
		"Make a list of drawings."

		for f in self.funcNames:
			if f[0:10] == 'getDrawing':
				# Make an instance and get its doc string.
				# If that fails, use a default error drawing.
				_evalFuncDrawing(f,self.drawings)


def makeSuite():
	"Make a test suite for unit testing."
	
	suite = unittest.TestSuite()
	suite.addTest(ShapesTestCase('testAllDrawings'))
	return suite


if __name__ == "__main__":
	unittest.TextTestRunner().run(makeSuite())