#!/usr/bin/env python from __future__ import print_function import os import shutil from nose.tools import eq_ from nose.plugins.skip import SkipTest import mapnik from .utilities import execution_path, run_all def setup(): # All of the paths used are relative, if we run the tests # from another directory we need to chdir() os.chdir(execution_path('.')) def make_tmp_map(): m = mapnik.Map(512, 512) m.background_color = mapnik.Color('steelblue') ds = mapnik.MemoryDatasource() context = mapnik.Context() context.push('Name') f = mapnik.Feature(context, 1) f['Name'] = 'Hello' f.geometry = mapnik.Geometry.from_wkt('POINT (0 0)') ds.add_feature(f) s = mapnik.Style() r = mapnik.Rule() sym = mapnik.MarkersSymbolizer() sym.allow_overlap = True r.symbols.append(sym) s.rules.append(r) lyr = mapnik.Layer('Layer') lyr.datasource = ds lyr.styles.append('style') m.append_style('style', s) m.layers.append(lyr) return m def draw_title(m, ctx, text, size=10, color=mapnik.Color('black')): """ Draw a Map Title near the top of a page.""" middle = m.width / 2.0 ctx.set_source_rgba(*cairo_color(color)) ctx.select_font_face( "DejaVu Sans Book", cairo.FONT_SLANT_NORMAL, cairo.FONT_WEIGHT_NORMAL) ctx.set_font_size(size) x_bearing, y_bearing, width, height = ctx.text_extents(text)[:4] ctx.move_to(middle - width / 2 - x_bearing, 20.0 - height / 2 - y_bearing) ctx.show_text(text) def draw_neatline(m, ctx): w, h = m.width, m.height ctx.set_source_rgba(*cairo_color(mapnik.Color('black'))) outline = [ [0, 0], [w, 0], [w, h], [0, h] ] ctx.set_line_width(1) for idx, pt in enumerate(outline): if (idx == 0): ctx.move_to(*pt) else: ctx.line_to(*pt) ctx.close_path() inset = 6 inline = [ [inset, inset], [w - inset, inset], [w - inset, h - inset], [inset, h - inset] ] ctx.set_line_width(inset / 2) for idx, pt in enumerate(inline): if (idx == 0): ctx.move_to(*pt) else: ctx.line_to(*pt) ctx.close_path() ctx.stroke() def cairo_color(c): """ Return a Cairo color tuple from a Mapnik Color.""" ctx_c = (c.r / 255.0, c.g / 255.0, c.b / 255.0, c.a / 255.0) return ctx_c if mapnik.has_pycairo(): import cairo def test_passing_pycairo_context_svg(): m = make_tmp_map() m.zoom_to_box(mapnik.Box2d(-180, -90, 180, 90)) test_cairo_file = '/tmp/mapnik-cairo-context-test.svg' surface = cairo.SVGSurface(test_cairo_file, m.width, m.height) expected_cairo_file = './images/pycairo/cairo-cairo-expected.svg' context = cairo.Context(surface) mapnik.render(m, context) draw_title(m, context, "Hello Map", size=20) draw_neatline(m, context) surface.finish() if not os.path.exists(expected_cairo_file) or os.environ.get('UPDATE'): print('generated expected cairo surface file', expected_cairo_file) shutil.copy(test_cairo_file, expected_cairo_file) diff = abs( os.stat(expected_cairo_file).st_size - os.stat(test_cairo_file).st_size) msg = 'diff in size (%s) between actual (%s) and expected(%s)' % ( diff, test_cairo_file, 'tests/python_tests/' + expected_cairo_file) eq_(diff < 1500, True, msg) os.remove(test_cairo_file) def test_passing_pycairo_context_pdf(): m = make_tmp_map() m.zoom_to_box(mapnik.Box2d(-180, -90, 180, 90)) test_cairo_file = '/tmp/mapnik-cairo-context-test.pdf' surface = cairo.PDFSurface(test_cairo_file, m.width, m.height) expected_cairo_file = './images/pycairo/cairo-cairo-expected.pdf' context = cairo.Context(surface) mapnik.render(m, context) draw_title(m, context, "Hello Map", size=20) draw_neatline(m, context) surface.finish() if not os.path.exists(expected_cairo_file) or os.environ.get('UPDATE'): print('generated expected cairo surface file', expected_cairo_file) shutil.copy(test_cairo_file, expected_cairo_file) diff = abs( os.stat(expected_cairo_file).st_size - os.stat(test_cairo_file).st_size) msg = 'diff in size (%s) between actual (%s) and expected(%s)' % ( diff, test_cairo_file, 'tests/python_tests/' + expected_cairo_file) eq_(diff < 1500, True, msg) os.remove(test_cairo_file) def test_passing_pycairo_context_png(): m = make_tmp_map() m.zoom_to_box(mapnik.Box2d(-180, -90, 180, 90)) test_cairo_file = '/tmp/mapnik-cairo-context-test.png' surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, m.width, m.height) expected_cairo_file = './images/pycairo/cairo-cairo-expected.png' expected_cairo_file2 = './images/pycairo/cairo-cairo-expected-reduced.png' context = cairo.Context(surface) mapnik.render(m, context) draw_title(m, context, "Hello Map", size=20) draw_neatline(m, context) surface.write_to_png(test_cairo_file) reduced_color_image = test_cairo_file.replace('png', '-mapnik.png') im = mapnik.Image.from_cairo(surface) im.save(reduced_color_image, 'png8') surface.finish() if not os.path.exists(expected_cairo_file) or os.environ.get('UPDATE'): print('generated expected cairo surface file', expected_cairo_file) shutil.copy(test_cairo_file, expected_cairo_file) diff = abs( os.stat(expected_cairo_file).st_size - os.stat(test_cairo_file).st_size) msg = 'diff in size (%s) between actual (%s) and expected(%s)' % ( diff, test_cairo_file, 'tests/python_tests/' + expected_cairo_file) eq_(diff < 500, True, msg) os.remove(test_cairo_file) if not os.path.exists( expected_cairo_file2) or os.environ.get('UPDATE'): print( 'generated expected cairo surface file', expected_cairo_file2) shutil.copy(reduced_color_image, expected_cairo_file2) diff = abs( os.stat(expected_cairo_file2).st_size - os.stat(reduced_color_image).st_size) msg = 'diff in size (%s) between actual (%s) and expected(%s)' % ( diff, reduced_color_image, 'tests/python_tests/' + expected_cairo_file2) eq_(diff < 500, True, msg) os.remove(reduced_color_image) if 'sqlite' in mapnik.DatasourceCache.plugin_names(): def _pycairo_surface(type, sym): if not os.path.exists('../data/good_maps/%s_symbolizer.xml' % sym): raise SkipTest test_cairo_file = '/tmp/mapnik-cairo-surface-test.%s.%s' % ( sym, type) expected_cairo_file = './images/pycairo/cairo-surface-expected.%s.%s' % ( sym, type) m = mapnik.Map(256, 256) mapnik.load_map(m, '../data/good_maps/%s_symbolizer.xml' % sym) m.zoom_all() if hasattr(cairo, '%sSurface' % type.upper()): surface = getattr( cairo, '%sSurface' % type.upper())( test_cairo_file, m.width, m.height) mapnik.render(m, surface) surface.finish() if not os.path.exists( expected_cairo_file) or os.environ.get('UPDATE'): print( 'generated expected cairo surface file', expected_cairo_file) shutil.copy(test_cairo_file, expected_cairo_file) diff = abs( os.stat(expected_cairo_file).st_size - os.stat(test_cairo_file).st_size) msg = 'diff in size (%s) between actual (%s) and expected(%s)' % ( diff, test_cairo_file, 'tests/python_tests/' + expected_cairo_file) if os.uname()[0] == 'Darwin': eq_(diff < 2100, True, msg) else: eq_(diff < 23000, True, msg) os.remove(test_cairo_file) return True else: print( 'skipping cairo.%s test since surface is not available' % type.upper()) return True def test_pycairo_svg_surface1(): eq_(_pycairo_surface('svg', 'point'), True) def test_pycairo_svg_surface2(): eq_(_pycairo_surface('svg', 'building'), True) def test_pycairo_svg_surface3(): eq_(_pycairo_surface('svg', 'polygon'), True) def test_pycairo_pdf_surface1(): eq_(_pycairo_surface('pdf', 'point'), True) def test_pycairo_pdf_surface2(): eq_(_pycairo_surface('pdf', 'building'), True) def test_pycairo_pdf_surface3(): eq_(_pycairo_surface('pdf', 'polygon'), True) if __name__ == "__main__": setup() exit(run_all(eval(x) for x in dir() if x.startswith("test_")))