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# Copyright (C) 2003 by Intevation GmbH |
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# Authors: |
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# Bernhard Herzog <[email protected]> |
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# |
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# This program is free software under the GPL (>=v2) |
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# Read the file COPYING coming with the software for details. |
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|
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"""Test Thuban.Model.baserenderer""" |
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|
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__version__ = "$Revision$" |
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# $Source$ |
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# $Id$ |
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|
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import os |
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import binascii |
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import unittest |
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|
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from mockgeo import SimpleShapeStore |
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import support |
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support.initthuban() |
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|
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from Thuban.Model.color import Transparent, Color |
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from Thuban.Model.data import SHAPETYPE_ARC, SHAPETYPE_POLYGON, SHAPETYPE_POINT |
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from Thuban.Model.map import Map |
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from Thuban.Model.layer import BaseLayer, Layer, RasterLayer |
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from Thuban.Model.table import MemoryTable, \ |
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FIELDTYPE_DOUBLE, FIELDTYPE_INT, FIELDTYPE_STRING |
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from Thuban.Model.classification import ClassGroupSingleton |
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import Thuban.Model.resource |
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|
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|
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from Thuban.UI.baserenderer import BaseRenderer, \ |
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add_renderer_extension, init_renderer_extensions |
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|
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|
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class MockDC: |
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|
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def __init__(self, size = None): |
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self.calls = [] |
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self.size = size |
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|
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def GetSizeTuple(self): |
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return self.size |
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|
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def __getattr__(self, attr): |
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def method(*args): |
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self.calls.append((attr,) + args) |
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return method |
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|
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class P: |
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|
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"""A simple point""" |
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|
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def __init__(self, x, y): |
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self.x = x |
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self.y = y |
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|
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def __eq__(self, other): |
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return self.x == other.x and self.y == other.y |
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|
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def __ne__(self, other): |
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return self.x != other.x and self.y != other.y |
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|
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def __repr__(self): |
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return "P(%r, %r)" % (self.x, self.y) |
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|
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|
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class SimpleRenderer(BaseRenderer): |
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|
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TRANSPARENT_PEN = ("pen", Transparent) |
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TRANSPARENT_BRUSH = ("brush", Transparent) |
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|
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def make_point(self, x, y): |
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return P(x, y) |
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|
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def tools_for_property(self, prop): |
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fill = prop.GetFill() |
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brush = ("brush", fill) |
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|
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stroke = prop.GetLineColor() |
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stroke_width = prop.GetLineWidth() |
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if stroke is Transparent: |
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pen = ("pen", Transparent) |
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else: |
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pen = ("pen", stroke, stroke_width) |
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|
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return pen, brush |
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|
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def label_font(self): |
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return "label font" |
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|
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def draw_raster_data(self, data, format='BMP'): |
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self.raster_data = data |
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self.raster_format = format |
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|
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|
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class MockProjection: |
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|
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"""Objects that look like projections but simply apply non-uniform scalings |
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""" |
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|
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def __init__(self, xscale, yscale): |
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self.xscale = float(xscale) |
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self.yscale = float(yscale) |
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|
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def Forward(self, x, y): |
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return (x * self.xscale, y * self.yscale) |
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|
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def Inverse(self, x, y): |
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return (x / self.xscale, y / self.yscale) |
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|
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|
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class TestBaseRenderer(unittest.TestCase): |
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|
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def setUp(self): |
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"""Set self.to_destroy to an empty list |
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|
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Test should put all objects whose Destroy should be called atunittest.main |
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the end into this list so that they're destroyed in tearDown |
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""" |
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self.to_destroy = [] |
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|
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def tearDown(self): |
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for obj in self.to_destroy: |
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obj.Destroy() |
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|
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def test_arc_no_projection(self): |
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"""Test BaseRenderer with arc layer and no projections""" |
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table = MemoryTable([("type", FIELDTYPE_STRING), |
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("value", FIELDTYPE_DOUBLE), |
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("code", FIELDTYPE_INT)], |
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[("UNKNOWN", 0.0, 0)]) |
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shapes = [[[(0, 0), (10, 10)]]] |
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store = SimpleShapeStore(SHAPETYPE_ARC, shapes, table) |
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|
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map = Map("TestBaseRenderer") |
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self.to_destroy.append(map) |
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layer = Layer("arc layer", store) |
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map.AddLayer(layer) |
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|
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dc = MockDC() |
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renderer = SimpleRenderer(dc, map, 2, (10, 10)) |
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|
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renderer.render_map() |
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|
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self.assertEquals(dc.calls, |
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[('BeginDrawing',), |
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('SetBrush', ('brush', Transparent)), |
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('SetPen', ('pen', Color(0, 0, 0), 1)), |
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('DrawLines', [P(10, 10), P(30, -10)]), |
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('SetFont', "label font"), |
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('EndDrawing',)]) |
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|
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def test_polygon_no_projection(self): |
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"""Test BaseRenderer with polygon layer and no projections""" |
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table = MemoryTable([("type", FIELDTYPE_STRING), |
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("value", FIELDTYPE_DOUBLE), |
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("code", FIELDTYPE_INT)], |
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[("UNKNOWN", 0.0, 0)]) |
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shapes = [[[(0, 0), (10, 10), (10, 0), (0, 0)]]] |
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store = SimpleShapeStore(SHAPETYPE_POLYGON, shapes, table) |
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|
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map = Map("TestBaseRenderer") |
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layer = Layer("polygon layer", store) |
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prop = layer.GetClassification().GetDefaultGroup().GetProperties() |
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prop.SetFill(Color(1, 1, 1)) |
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|
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map.AddLayer(layer) |
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self.to_destroy.append(map) |
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|
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dc = MockDC() |
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renderer = SimpleRenderer(dc, map, 2, (10, 10)) |
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|
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renderer.render_map() |
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|
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self.assertEquals(dc.calls, |
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[('BeginDrawing',), |
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('SetBrush', ('brush', Color(1, 1, 1))), |
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('SetPen', ('pen', Transparent)), |
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('DrawPolygon', [P(10, 10), P(30, -10), P(30, 10), |
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P(10, 10)]), |
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('SetBrush', ('brush', Transparent)), |
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('SetPen', ('pen', Color(0, 0, 0), 1)), |
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('DrawLines', [P(10, 10), P(30, -10), P(30, 10), |
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P(10, 10)]), |
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('SetFont', "label font"), |
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('EndDrawing',)]) |
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|
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def test_complex_polygon(self): |
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"""Test BaseRenderer with complex polygon and no projections""" |
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# A square inside a sqare. This has to be drawn with at least a |
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# draw polygon call and two draw lines calls. |
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shapes = [[[(0, 0), (0, 10), (10, 10), (10, 0), (0, 0)], |
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[(2, 2), (8, 2), (8, 8), (2, 8), (2, 2)]]] |
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|
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table = MemoryTable([("type", FIELDTYPE_STRING), |
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("value", FIELDTYPE_DOUBLE), |
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("code", FIELDTYPE_INT)], |
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[("UNKNOWN", 0.0, 0)]) |
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store = SimpleShapeStore(SHAPETYPE_POLYGON, shapes, table) |
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|
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map = Map("TestBaseRenderer") |
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layer = Layer("polygon layer", store) |
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prop = layer.GetClassification().GetDefaultGroup().GetProperties() |
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prop.SetFill(Color(1, 1, 1)) |
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|
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map.AddLayer(layer) |
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self.to_destroy.append(map) |
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|
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dc = MockDC() |
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renderer = SimpleRenderer(dc, map, 2, (10, 10)) |
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|
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renderer.render_map() |
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|
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self.assertEquals(dc.calls, |
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[('BeginDrawing',), |
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('SetBrush', ('brush', Color(1, 1, 1))), |
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('SetPen', ('pen', Transparent)), |
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('DrawPolygon', |
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[P(10, 10), P(10, -10), P(30, -10), P(30, 10), |
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P(10, 10), |
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P(14, 6), P(26, 6), P(26, -6), P(14, -6), |
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P(14, 6), |
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P(10, 10)]), |
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('SetBrush', ('brush', Transparent)), |
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('SetPen', ('pen', Color(0, 0, 0), 1)), |
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('DrawLines', [P(10, 10), P(10, -10), P(30, -10), |
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P(30, 10), P(10, 10)]), |
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('DrawLines', [P(14, 6), P(26, 6), P(26, -6), |
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P(14, -6), P(14, 6)]), |
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('SetFont', "label font"), |
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('EndDrawing',)]) |
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|
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def test_point_no_projection(self): |
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"""Test BaseRenderer with point layer and no projections""" |
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table = MemoryTable([("type", FIELDTYPE_STRING), |
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("value", FIELDTYPE_DOUBLE), |
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("code", FIELDTYPE_INT)], |
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[("UNKNOWN", 0.0, 0), |
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("UNKNOWN", 0.0, 1)]) |
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shapes = [[[(0, 0)]], [[(10, 10)]]] |
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store = SimpleShapeStore(SHAPETYPE_POINT, shapes, table) |
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|
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map = Map("TestBaseRenderer") |
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layer = Layer("point layer", store) |
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map.AddLayer(layer) |
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self.to_destroy.append(map) |
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|
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dc = MockDC() |
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renderer = SimpleRenderer(dc, map, 2, (10, 10)) |
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|
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renderer.render_map() |
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|
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self.assertEquals(dc.calls, |
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[('BeginDrawing',), |
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('SetBrush', ('brush', Transparent)), |
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('SetPen', ('pen', Color(0, 0, 0), 1)), |
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('DrawEllipse', 5, 5, 10, 10), |
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('SetBrush', ('brush', Transparent)), |
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('SetPen', ('pen', Color(0, 0, 0), 1)), |
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('DrawEllipse', 25, -15, 10, 10), |
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('SetFont', "label font"), |
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('EndDrawing',)]) |
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|
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def test_raster_no_projection(self): |
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"""Test BaseRenderer with raster layer and no projections |
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|
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This test is very simple minded and perhaps can easily fail due |
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to round-off errors. It simply compares the complete BMP file |
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returned by gdalwarp.ProjectRasterFile to a BMP file data. |
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""" |
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if not Thuban.Model.resource.has_gdal_support(): |
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raise support.SkipTest("No gdal support") |
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|
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map = Map("TestBaseRenderer") |
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|
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layer = RasterLayer("raster layer", |
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os.path.join("..", "Data", "iceland", |
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"island.tif")) |
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map.AddLayer(layer) |
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self.to_destroy.append(map) |
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|
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dc = MockDC(size = (20, 20)) |
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renderer = SimpleRenderer(dc, map, 34, (800, 2250)) |
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|
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renderer.render_map() |
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|
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# The following commented out code block can be used to generate |
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# the base64 coded reference image data |
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#hexed = binascii.b2a_base64(renderer.raster_data) |
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#while hexed: |
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# print repr(hexed[:65]) |
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# hexed = hexed[65:] |
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|
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# The reference data as a base64 coded BMP image |
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raw_data = binascii.a2b_base64( |
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'Qk3GBQAAAAAAADYEAAAoAAAAFAAAABQAAAABAAgAAAAAAJABAAAAAAAAAAAAAAABA' |
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'AAAAAAAApYOAALGAgAGfjoAHmZyACZ2egAujo4AArICAE66GgACngIA5mZSAJqONg' |
| 299 |
'ACzgIAAoIyABZqZgAO4uYAAtICAAKqAgAScloAAtYCADKepgAS2t4AAooiAALaAgA' |
| 300 |
'CtgIAHsbOAAp2TgACogIAFtbaACqOigAidnoAAuICADKaogACfjoAAr4CAAKSFgAm' |
| 301 |
'fnoAAo4eABrS1gAibnoAHsbKAAp6SgACmg4AGs7SACLCxgAqioIAAoYqAAZ6RgACm' |
| 302 |
'goAKrK6AALmAgAC3gIAApIaABZqagACngYAAo4iAAKmAgAivsYAJoJ6AALCAgACyg' |
| 303 |
'IAAq4CAAKWEgAOclYALpqeAAK6AgACgjYAEm5eAAKKKgAGekIAHmp6ABpmcgAChi4' |
| 304 |
'ALpaaACJyegAClhYAEnJeAAZ+QgAqhoIADnZSAB5mdgACiiYAJnp6ACqGegAqrrYA' |
| 305 |
'GmpuAB5megACkh4ALqqyAA52VgAulpYAAoI6AAZ+PgASbmIALpKWAA7m5gAWbmYAG' |
| 306 |
'mpyAC6SjgAqioYADnZOAA7q6gAianoALqauABpqagAqgnoAEnJWAAp6RgAWbmIACu' |
| 307 |
'7uACqGfgAqiooAMqauAAby8gAmusIAMp6qAC6WngAyoqoABvb2AC6SkgAS3uIAJra' |
| 308 |
'+AB7KzgAynqIALq62ADKirgAC+voAGsrSABLi4gAG8vYADubqAC6qtgAuprIABvb6' |
| 309 |
'ACLCygAW2t4AKra+AAru8gAS4uYACuruAAry8gAG+voAAEBAAFhkZABAQEAABp6fA' |
| 310 |
'EBACAAAgPwAAPu/AJE9CgBACAAALj1BAEAICAAGPAAAQAgAAAY8+gBACL8AJTxXAA' |
| 311 |
'gIQAAAPEAAAAgIAAY8QABACAgAAGQAAABAAAAALpoAAEBAAAAALgAAAEAABkAGAEA' |
| 312 |
'IQAD2AEAAvwAIAJAu2ABAQEAALmQ5AEBAQAAAnp8AAEAIAAD4+gAAv78An5rDAEBA' |
| 313 |
'QAAuhAcAQEBAAAb8AABAvwAAAGQKAABAAABpLksAQEAIAC4ACwBAAAAAAPkGAAC/Q' |
| 314 |
'AD2APoAvwC/AJ0umgBAQEAAAGRkAABAQAAGnp8AQEAIAPcA/AC/AL8A7D0GAEAIQA' |
| 315 |
'D4hAAAv0AAAAD8QAAAvwgA92T6AL9AvwDsLlcAQEBAAC4AQABAAAgA+EAAAL8IAAA' |
| 316 |
'8AAAACAAAAJ8uVgBAQEAAAGQ5AABAQAAAnpcAAEBAAPYAQAC/AAgAnQsGAEAAQAAA' |
| 317 |
'hG0AAEBAAB38PQAIv0AA9mT6AL9AvwAJLmwAZUBAAB0AQAAIAAgAHUAAAAgIAAAAA' |
| 318 |
'AAAAAAAAACzbAAAQEAA//k5AH+/QAAGb5cAQEBAAACy5AAAQAgAAIpAAABACAAAAA' |
| 319 |
'AAAAAAAAkJCQkJCQkJCQkJCQkJCQkJCQkJCQkJCQkJCQkJCQkJCQkJCQkJCQkJCQk' |
| 320 |
'JCQkJCQkJCQkJCQkJCQkJCQkJCQkJCQkJCQkJCQkJCQkJCQkJCQkJCQkJCQkJCQkJ' |
| 321 |
'CQkJCQkJCQkJCQkJCQkJCQkJCQkJCQkJCQkJCQkJCQkJCQkJCQkJCQkJCQkJCQkJC' |
| 322 |
'QkJCQkJCQkJCQkJCQkJCQkJCQkyEi8aQCEJCQkJCQkJCQkJCQkJCTI7OwgILzsyCg' |
| 323 |
'kJCQkJCQkJCQkJCzcJFggvADwGEDc3EhYAMgkJCQkJEjcVJDohGj0LGgYAPT0hCT0' |
| 324 |
'LDyI3CQoBLwAaFgkyEC9AJAE8OgsIMjoABi8kCx4JCQkJCQkeGko8KTcLCxIyNwkJ' |
| 325 |
'CQkWEjwWNUAQPCEAMwgJCQkJCQkSQBcvEkAPAQkyN0AMCQkJCQhBFyEvNy89JCIkM' |
| 326 |
'yItGQwJCQo9RxozIgkyCQoPFxAtDBkgIgkJCQkJCQkJMRoQECJQNi9EIAAgCQkJCQ' |
| 327 |
'kSUA88UAYeBjELICA8HiI=\n') |
| 328 |
self.assertEquals(renderer.raster_data, raw_data) |
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self.assertEquals(renderer.raster_format, "BMP") |
| 330 |
|
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self.assertEquals(dc.calls, |
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[('BeginDrawing',), |
| 333 |
('SetFont', "label font"), |
| 334 |
('EndDrawing',)]) |
| 335 |
|
| 336 |
def test_point_map_projection(self): |
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"""Test BaseRenderer with point layer and map projection""" |
| 338 |
table = MemoryTable([("type", FIELDTYPE_STRING), |
| 339 |
("value", FIELDTYPE_DOUBLE), |
| 340 |
("code", FIELDTYPE_INT)], |
| 341 |
[("UNKNOWN", 0.0, 0)]) |
| 342 |
shapes = [[[(10, 10)]]] |
| 343 |
store = SimpleShapeStore(SHAPETYPE_POINT, shapes, table) |
| 344 |
|
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map = Map("TestBaseRenderer") |
| 346 |
map.SetProjection(MockProjection(-3, 3)) |
| 347 |
layer = Layer("point layer", store) |
| 348 |
map.AddLayer(layer) |
| 349 |
self.to_destroy.append(map) |
| 350 |
|
| 351 |
dc = MockDC() |
| 352 |
renderer = SimpleRenderer(dc, map, 2, (10, 10)) |
| 353 |
|
| 354 |
renderer.render_map() |
| 355 |
|
| 356 |
self.assertEquals(dc.calls, |
| 357 |
[('BeginDrawing',), |
| 358 |
('SetBrush', ('brush', Transparent)), |
| 359 |
('SetPen', ('pen', Color(0, 0, 0), 1)), |
| 360 |
('DrawEllipse', -55, -55, 10, 10), |
| 361 |
('SetFont', "label font"), |
| 362 |
('EndDrawing',)]) |
| 363 |
|
| 364 |
def test_point_layer_projection(self): |
| 365 |
"""Test BaseRenderer with point layer and layer projection""" |
| 366 |
table = MemoryTable([("type", FIELDTYPE_STRING), |
| 367 |
("value", FIELDTYPE_DOUBLE), |
| 368 |
("code", FIELDTYPE_INT)], |
| 369 |
[("UNKNOWN", 0.0, 0)]) |
| 370 |
shapes = [[[(9, 9)]]] |
| 371 |
store = SimpleShapeStore(SHAPETYPE_POINT, shapes, table) |
| 372 |
|
| 373 |
map = Map("TestBaseRenderer") |
| 374 |
layer = Layer("point layer", store) |
| 375 |
layer.SetProjection(MockProjection(3, -3)) |
| 376 |
map.AddLayer(layer) |
| 377 |
self.to_destroy.append(map) |
| 378 |
|
| 379 |
dc = MockDC() |
| 380 |
renderer = SimpleRenderer(dc, map, 2, (10, 10)) |
| 381 |
|
| 382 |
renderer.render_map() |
| 383 |
|
| 384 |
self.assertEquals(dc.calls, |
| 385 |
[('BeginDrawing',), |
| 386 |
('SetBrush', ('brush', Transparent)), |
| 387 |
('SetPen', ('pen', Color(0, 0, 0), 1)), |
| 388 |
('DrawEllipse', 11, 11, 10, 10), |
| 389 |
('SetFont', "label font"), |
| 390 |
('EndDrawing',)]) |
| 391 |
|
| 392 |
def test_point_layer_and_map_projection(self): |
| 393 |
"""Test BaseRenderer with point layer and layer and map projection""" |
| 394 |
table = MemoryTable([("type", FIELDTYPE_STRING), |
| 395 |
("value", FIELDTYPE_DOUBLE), |
| 396 |
("code", FIELDTYPE_INT)], |
| 397 |
[("UNKNOWN", 0.0, 0)]) |
| 398 |
shapes = [[[(9, 9)]]] |
| 399 |
store = SimpleShapeStore(SHAPETYPE_POINT, shapes, table) |
| 400 |
|
| 401 |
map = Map("TestBaseRenderer") |
| 402 |
map.SetProjection(MockProjection(-3, 3)) |
| 403 |
layer = Layer("point layer", store) |
| 404 |
layer.SetProjection(MockProjection(3, -3)) |
| 405 |
map.AddLayer(layer) |
| 406 |
self.to_destroy.append(map) |
| 407 |
|
| 408 |
dc = MockDC() |
| 409 |
renderer = SimpleRenderer(dc, map, 2, (10, 10)) |
| 410 |
|
| 411 |
renderer.render_map() |
| 412 |
|
| 413 |
self.assertEquals(dc.calls, |
| 414 |
[('BeginDrawing',), |
| 415 |
('SetBrush', ('brush', Transparent)), |
| 416 |
('SetPen', ('pen', Color(0, 0, 0), 1)), |
| 417 |
('DrawEllipse', -13, 23, 10, 10), |
| 418 |
('SetFont', "label font"), |
| 419 |
('EndDrawing',)]) |
| 420 |
|
| 421 |
|
| 422 |
def test_point_with_classification(self): |
| 423 |
"""Test BaseRenderer with point layer and classification""" |
| 424 |
table = MemoryTable([("type", FIELDTYPE_STRING), |
| 425 |
("value", FIELDTYPE_DOUBLE), |
| 426 |
("code", FIELDTYPE_INT)], |
| 427 |
[("UNKNOWN", 0.0, 0), |
| 428 |
("UNKNOWN", 0.0, 1)]) |
| 429 |
shapes = [[[(0, 0)]], [[(10, 10)]]] |
| 430 |
store = SimpleShapeStore(SHAPETYPE_POINT, shapes, table) |
| 431 |
|
| 432 |
map = Map("TestBaseRenderer") |
| 433 |
layer = Layer("point layer", store) |
| 434 |
group = ClassGroupSingleton(1) |
| 435 |
group.GetProperties().SetFill(Color(0, 0, 1)) |
| 436 |
layer.GetClassification().AppendGroup(group) |
| 437 |
layer.SetClassificationColumn("code") |
| 438 |
|
| 439 |
map.AddLayer(layer) |
| 440 |
self.to_destroy.append(map) |
| 441 |
|
| 442 |
dc = MockDC() |
| 443 |
renderer = SimpleRenderer(dc, map, 2, (10, 10)) |
| 444 |
|
| 445 |
renderer.render_map() |
| 446 |
|
| 447 |
self.assertEquals(dc.calls, |
| 448 |
[('BeginDrawing',), |
| 449 |
('SetBrush', ('brush', Transparent)), |
| 450 |
('SetPen', ('pen', Color(0, 0, 0), 1)), |
| 451 |
('DrawEllipse', 5, 5, 10, 10), |
| 452 |
('SetBrush', ('brush', Color(0, 0, 1))), |
| 453 |
('SetPen', ('pen', Color(0, 0, 0), 1)), |
| 454 |
('DrawEllipse', 25, -15, 10, 10), |
| 455 |
('SetFont', "label font"), |
| 456 |
('EndDrawing',)]) |
| 457 |
|
| 458 |
|
| 459 |
def test_renderer_extension(self): |
| 460 |
"""Test renderer with a renderer extension""" |
| 461 |
class MyLayer(BaseLayer): |
| 462 |
pass |
| 463 |
|
| 464 |
calls = [] |
| 465 |
def my_renderer(renderer, layer): |
| 466 |
calls.append((renderer, layer)) |
| 467 |
return () |
| 468 |
|
| 469 |
add_renderer_extension(MyLayer, my_renderer) |
| 470 |
|
| 471 |
try: |
| 472 |
map = Map("test_renderer_extension") |
| 473 |
layer = MyLayer("my layer") |
| 474 |
map.AddLayer(layer) |
| 475 |
self.to_destroy.append(map) |
| 476 |
|
| 477 |
dc = MockDC() |
| 478 |
renderer = SimpleRenderer(dc, map, 2, (10, 10)) |
| 479 |
renderer.render_map() |
| 480 |
finally: |
| 481 |
init_renderer_extensions() |
| 482 |
|
| 483 |
self.assertEquals(calls, [(renderer, layer)]) |
| 484 |
|
| 485 |
|
| 486 |
if __name__ == "__main__": |
| 487 |
support.run_tests() |
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