def generate_output(data_fname, config_fname, out_fname, outformat,
colorscheme=None, scale=1.0, margins=['10%', '5%']):
"""
TODO
"""
tree = _buildtree(data_fname, config_fname, colorscheme)
# Temporary context for layout calculations (need an actual graphics
# context to be able to work with fonts & text extents). Note that
# 'None' is given for the output filename, so a failed run won't
# overwrite an already existing file with an empty one. The actual
# output file will be created later.
_ctx.initsurface(1, 1, outformat, None, scale)
width, height = tree.calclayout()
# Margins can be given as percentages of the total graph size,
# that's why we have to wait with the margin calculations until the
# layout is complete
padtop, padleft, padbottom, padright = calculate_margins(width, height,
margins)
width += padleft + padright
height += padtop + padbottom
# Center tree
tree.shiftnodes(padleft, padtop)
# Create output file
_ctx.initsurface(width, height, outformat, out_fname, scale)
_ctx.background(tree.background_color())
tree.draw()
_ctx.writesurface()
def write_tree(tree, w, h, suffix='', scale=1.0):
w += PAD_X * 2
h += PAD_Y * 2
if suffix:
suffix = '-' + suffix
init_surface(w, h, suffix=suffix, scale=scale)
ctx.translate(PAD_X, PAD_Y)
tree.draw()
ctx.writesurface()
def write_tree(tree, w, h, suffix='', scale=1.0):
w += PAD_X * 2
h += PAD_Y * 2
if suffix:
suffix = '-' + suffix
init_surface(w, h, suffix=suffix, scale=scale)
ctx.translate(PAD_X, PAD_Y)
tree.draw()
ctx.writesurface()
from twyg.cairowrapper import context as ctx
config1 = r"""
[layout]
style layout
[node]
style line
fontName $FONTNAME
fontSize $FONTSIZE
textBaselineCorrection $BASELINE_CORR
strokeWidth 4
[connection]
style curve
[color]
style cycle
colorscheme "mint-examples2"
"""
data1 = {'daffadowndilly': []}
init_surface(160, 50, scale=0.9)
ctx.translate(3, 3)
tree = create_tree(config1, data1)
tree.draw()
ctx.writesurface()
cornerStyle square
junctionStyle none
junctionRadius 10
junctionXFactor 0.55
[color]
style cycle
colorscheme "mint-examples3"
"""
data1 = { 'barrel': ['flank', 'stem', 'grot']}
data2 = { 'barrel': ['flank', 'stem', 'grot']}
data3 = { '7381': ['331', '102', '445', '983']}
init_surface(865, 165, scale=0.75)
tree1 = create_tree(config1, data1)
tree2 = create_tree(config2, data2)
tree3 = create_tree(config3, data3)
ctx.translate(3, 3)
tree1.draw()
ctx.translate(310, 0)
tree2.draw()
ctx.translate(310, 0)
tree3.draw()
ctx.writesurface()
