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"""This is an example style sheet. You can create your own, and
have them loaded by the presentation. A style sheet is just a
dictionary, where they keys are style names and the values are
ParagraphStyle objects.
You must provide a function called "getParagraphStyles()" to
return it. In future, we can put things like LineStyles,
TableCellStyles etc. in the same modules.
You might wish to have two parallel style sheets, one for colour
and one for black and white, so you can switch your presentations
easily.
A style sheet MUST define a style called 'Normal'.
"""
from reportlab.lib import styles
from reportlab.lib.colors import chartreuse, green, white
from reportlab.lib.enums import TA_LEFT, TA_CENTER
def getParagraphStyles():
"""Returns a dictionary of styles based on Helvetica"""
stylesheet = {}
ParagraphStyle = styles.ParagraphStyle
para = ParagraphStyle('Normal', None) #the ancestor of all
para.fontName = 'Helvetica-Bold'
para.fontSize = 24
para.leading = 28
para.textColor = white
stylesheet['Normal'] = para
para = ParagraphStyle('BodyText', stylesheet['Normal'])
para.spaceBefore = 12
stylesheet['BodyText'] = para
para = ParagraphStyle('BigCentered', stylesheet['Normal'])
para.spaceBefore = 12
para.alignment = TA_CENTER
stylesheet['BigCentered'] = para
para = ParagraphStyle('Italic', stylesheet['BodyText'])
para.fontName = 'Helvetica-Oblique'
para.textColor = white
stylesheet['Italic'] = para
para = ParagraphStyle('Title', stylesheet['Normal'])
para.fontName = 'Helvetica'
para.fontSize = 48
para.Leading = 58
para.spaceAfter = 36
para.alignment = TA_CENTER
stylesheet['Title'] = para
para = ParagraphStyle('Heading1', stylesheet['Normal'])
para.fontName = 'Helvetica-Bold'
para.fontSize = 48# 36
para.leading = 44
para.spaceAfter = 36
para.textColor = green
para.alignment = TA_LEFT
stylesheet['Heading1'] = para
para = ParagraphStyle('Heading2', stylesheet['Normal'])
para.fontName = 'Helvetica-Bold'
para.fontSize = 28
para.leading = 34
para.spaceBefore = 24
para.spaceAfter = 12
stylesheet['Heading2'] = para
para = ParagraphStyle('Heading3', stylesheet['Normal'])
para.fontName = 'Helvetica-BoldOblique'
para.spaceBefore = 24
para.spaceAfter = 12
stylesheet['Heading3'] = para
para = ParagraphStyle('Bullet', stylesheet['Normal'])
para.firstLineIndent = -18
para.leftIndent = 72
para.spaceBefore = 6
para.bulletFontName = 'Symbol'
para.bulletFontSize = 24
para.bulletIndent = 36
stylesheet['Bullet'] = para
para = ParagraphStyle('Definition', stylesheet['Normal'])
#use this for definition lists
para.firstLineIndent = 0
para.leftIndent = 72
para.bulletIndent = 0
para.spaceBefore = 12
para.bulletFontName = 'Helvetica-BoldOblique'
stylesheet['Definition'] = para
para = ParagraphStyle('Code', stylesheet['Normal'])
para.fontName = 'Courier-Bold'
para.fontSize = 16
para.leading = 18
para.leftIndent = 36
para.textColor = chartreuse
stylesheet['Code'] = para
return stylesheet
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