110 lines
4 KiB
Python
110 lines
4 KiB
Python
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# -*- coding: utf-8 -*-
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import mapnik
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import os
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from time import time
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from compare import compare, compare_grids
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try:
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import json
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except ImportError:
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import simplejson as json
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def render_cairo(m, output, scale_factor):
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mapnik.render_to_file(m, output, 'ARGB32', scale_factor)
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# open and re-save as png8 to save space
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new_im = mapnik.Image.open(output)
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new_im.save(output, 'png8:m=h')
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def render_grid(m, output, scale_factor):
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grid = mapnik.Grid(m.width, m.height)
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mapnik.render_layer(m, grid, layer=0)
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utf1 = grid.encode('utf', resolution=4)
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open(output,'wb').write(json.dumps(utf1, indent=1))
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class RenderJob:
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renderers = [
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{ 'name': 'agg',
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'render': lambda m, output, scale_factor: mapnik.render_to_file(m, output, 'png8:m=h', scale_factor),
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'compare': lambda actual, reference: compare(actual, reference, alpha=True),
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'threshold': 0,
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'filetype': 'png',
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'dir': 'images'
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},
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{ 'name': 'cairo',
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'render': render_cairo,
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'compare': lambda actual, reference: compare(actual, reference, alpha=False),
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'threshold': 0,
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'filetype': 'png',
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'dir': 'images'
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},
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{ 'name': 'grid',
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'render': render_grid,
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'compare': lambda actual, reference: compare_grids(actual, reference, alpha=False),
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'threshold': 0,
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'filetype': 'json',
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'dir': 'grids'
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}
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]
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def __init__(self, reporting, dirname, visual_output_dir):
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self.reporting = reporting
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self.generate = False
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self.overwrite_failures = False
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self.dirname = dirname
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self.repeat = 1
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self.visual_output_dir = visual_output_dir
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def set_overwrite_failures(self, state):
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self.reporting.overwrite_failures = state
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self.overwrite_failures = state
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def set_generate(self, state):
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self.generate = state
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def load_and_save(self, filename, output):
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self.m = mapnik.Map(16, 16)
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try:
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start = time()
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mapnik.load_map(self.m, os.path.join(self.dirname, "styles", "%s.xml" % filename), False)
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mapnik.save_map(self.m, output)
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except Exception, e:
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self.reporting.load_error(filename, repr(e))
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def render(self, config, width, height, scale_factor):
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filename = config['name']
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postfix = "%s-%d-%d-%s" % (filename, width, height, scale_factor)
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bbox = config.get('bbox')
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self.m.resize(int(width*scale_factor), int(height*scale_factor))
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if bbox is not None:
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self.m.zoom_to_box(bbox)
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else:
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self.m.zoom_all()
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for renderer in self.renderers:
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# TODO - grid renderer does not support scale_factor yet via python
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if renderer['name'] == 'grid' and scale_factor != 1.0:
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continue
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if config.get(renderer['name'], True):
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expected = os.path.join(self.dirname, renderer['dir'], '%s-%s-reference.%s' %
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(postfix, renderer['name'], renderer['filetype']))
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actual = os.path.join(self.visual_output_dir, '%s-%s.%s' %
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(postfix, renderer['name'], renderer['filetype']))
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self.reporting.show_file(postfix, renderer['name'])
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try:
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start = time()
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renderer['render'](self.m, actual, scale_factor)
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render_time = time() - start
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if not os.path.exists(expected):
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self.reporting.not_found(actual, expected)
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else:
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diff = renderer['compare'](actual, expected)
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if diff > renderer['threshold']:
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self.reporting.result_fail(actual, expected, diff, render_time)
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else:
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self.reporting.result_pass(actual, expected, diff, render_time)
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except Exception, e:
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self.reporting.other_error('%s-%s' % (postfix, renderer['name']), repr(e))
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