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"""
Python scripts to test GimpBrush class of libgimp API.
See comments about usage and setup in test-resource-class.py
Setup: "2. Hardness 050" brush is selected.
Testing context_set_brush
and a few other tests of class methods
are in test_resource_class.py
FUTURE: revise comparison of floats to within epsilon
"""
"""
Test a known, stock, parametric brush "2. Hardness 050"
********************************************************************************
Numeric literals might change if gimp devs change defaults.
"""
brush_default = Gimp.context_get_brush()
print( brush_default.get_id() )
assert brush_default.get_id() == "2. Hardness 050"
assert brush_default.is_generated()
assert not brush_default.is_editable()
"""
Test getters of default, stock (not editable), parametric brush
"""
success, width, height, mask_bpp, color_bpp = brush_default.get_info()
print( width, height, mask_bpp, color_bpp )
assert success
assert width == 51
assert height == 51
assert mask_bpp == 1
# !!! Since parametric, not pixmap and color_bpp is zero
assert color_bpp == 0
success, width, height, mask_bpp, mask, color_bpp, pixels = brush_default.get_pixels()
print( width, height, mask_bpp, len(mask), color_bpp, len(pixels) )
assert success
assert width == 51
assert height == 51
assert mask_bpp == 1
# !!! Since parametric, not pixmap and color_bpp is zero
assert color_bpp == 0
assert len(mask) == 2601
assert len(pixels) == 0
# !!! spacing does not return success, only a value
spacing = brush_default.get_spacing()
print(spacing)
assert spacing == 10
# shape, radius, spikes, hardness, aspect_ratio, angle
success, shape = brush_default.get_shape()
assert success
print(shape)
assert shape == Gimp.BrushGeneratedShape.CIRCLE
success, radius = brush_default.get_radius()
assert success
print(radius)
assert radius == 25.0
success, spikes = brush_default.get_spikes()
assert success
print(spikes)
assert spikes == 2
success, hardness = brush_default.get_hardness()
assert success
print(hardness)
assert hardness == 0.5
success, aspect_ratio = brush_default.get_aspect_ratio()
assert success
print(aspect_ratio)
assert aspect_ratio == 1.0
success, angle = brush_default.get_angle()
assert success
print(angle)
assert angle == 0.0
"""
Test set_spacing fails on not editable brush.
"""
success = brush_default.set_spacing(1)
assert not success
# spacing did not change
assert brush_default.get_spacing() == 10
"""
Test setters fail on non-editable brush.
When they fail, they return a value that is nullish
"""
success, returned_shape = brush_default.set_shape(Gimp.BrushGeneratedShape.DIAMOND)
print(success, returned_shape)
assert not success
assert returned_shape is Gimp.BrushGeneratedShape.CIRCLE
success, returned_radius = brush_default.set_radius(1.0)
print(success, returned_radius)
assert not success
assert returned_radius == 0.0
success, returned_spikes = brush_default.set_spikes(1.0)
print(success, returned_spikes)
assert not success
assert returned_spikes == 0
success, returned_hardness = brush_default.set_hardness(1.0)
print(success, returned_hardness)
assert not success
assert returned_hardness == 0.0
success, returned_aspect_ratio = brush_default.set_aspect_ratio(1.0)
print(success, returned_aspect_ratio)
assert not success
success, returned_angle = brush_default.set_angle(1.0)
assert not success
"""
Test non-parametric brush i.e. raster, and stock i.e. not editable
********************************************************************************
No method exists to get a specific brush.
But we can set the ID of a new brush.
"""
brush_raster = Gimp.Brush()
brush_raster.set_property("id", "Acrylic 01")
assert brush_raster.get_id() == "Acrylic 01"
assert brush_raster.is_valid()
# raster brush is not parametric
assert not brush_raster.is_generated()
# This brush is not editable
assert not brush_raster.is_editable()
# Raster brush has spacing
spacing = brush_raster.get_spacing()
print(spacing)
assert spacing == 25
# Getters of attributes of parametric brush fail for raster brush
success, shape = brush_raster.get_shape()
assert not success
success, radius = brush_raster.get_radius()
assert not success
success, spikes = brush_raster.get_spikes()
assert not success
success, hardness = brush_raster.get_hardness()
assert not success
success, aspect_ratio = brush_raster.get_aspect_ratio()
assert not success
success, angle = brush_raster.get_angle()
assert not success
"""
Test raster brush of kind color has pixel data.
"""
brush_color = Gimp.Brush()
brush_color.set_property("id", "z Pepper")
assert brush_color.is_valid()
success, width, height, mask_bpp, mask, color_bpp, pixels = brush_color.get_pixels()
print( width, height, mask_bpp, len(mask), color_bpp, len(pixels) )
assert success
# !!! Since is color and raster, has pixmap and color_bpp is non-zero
assert color_bpp == 3
assert len(pixels) > 0
"""
Test setting spacing on not editable, raster brush
"""
success = brush_raster.set_spacing(1)
assert not success
# spacing did not change
assert brush_raster.get_spacing() == 25
"""
Test setters fails on raster brush.
"""
success, returned_shape = brush_raster.set_shape(Gimp.BrushGeneratedShape.DIAMOND)
print(success, returned_shape)
assert not success
# Returned value is integer 0, corresponding to CIRCLE enum
assert returned_shape is Gimp.BrushGeneratedShape.CIRCLE
success, returned_radius = brush_raster.set_radius(1.0)
assert not success
success, returned_spikes = brush_raster.set_spikes(1.0)
assert not success
success, returned_hardness = brush_raster.set_hardness(1.0)
assert not success
success, returned_aspect_ratio = brush_raster.set_aspect_ratio(1.0)
assert not success
success, returned_angle = brush_raster.set_angle(1.0)
assert not success
"""
Test new brush
********************************************************************************
Parametric and editable
"""
brush_new = Gimp.Brush.new("New Brush")
# is generated and editable
assert brush_new.is_generated()
assert brush_new.is_editable()
"""
Test setters on editable brush.
"""
success = brush_new.set_spacing(20)
assert success == True
spacing = brush_new.get_spacing()
assert spacing == 20
success, returned_shape = brush_new.set_shape(Gimp.BrushGeneratedShape.DIAMOND)
print(success)
assert success == True
assert returned_shape == Gimp.BrushGeneratedShape.DIAMOND
success, shape = brush_new.get_shape()
assert success == True
assert shape == Gimp.BrushGeneratedShape.DIAMOND
success, returned_radius = brush_new.set_radius(4.0)
assert success == True
print(returned_radius)
assert returned_radius == 4.0
success, radius = brush_new.get_radius()
assert success == True
assert radius == 4.0
success, returned_spikes = brush_new.set_spikes(2)
assert success == True
assert returned_spikes == 2
success, spikes = brush_new.get_spikes()
assert success == True
assert spikes == 2
success, returned_hardness = brush_new.set_hardness(0.5)
assert success == True
print(returned_hardness)
assert returned_hardness == 0.5
success, hardness = brush_new.get_hardness()
assert success == True
assert hardness == 0.5
success, returned_aspect_ratio = brush_new.set_aspect_ratio(5.0)
assert success == True
print(returned_aspect_ratio)
assert returned_aspect_ratio == 5.0
success, aspect_ratio = brush_new.get_aspect_ratio()
assert success == True
assert aspect_ratio == 5.0
success, returned_angle = brush_new.set_angle(90.0)
assert success == True
print(returned_angle)
assert returned_angle == 90.0
success, angle = brush_new.get_angle()
assert success == True
assert angle == 90.0
"""
Test invalid enum for shape.
"""
# TODO it yields a TypeError
"""
Test clamping at upper limits.
"""
'''
Omitting this test for now. Possible bug.
The symptoms are that it takes a long time,
and then GIMP crashes.
success, returned_radius = brush_new.set_radius(40000)
assert success == True
# upper clamp
assert returned_radius == 32767.0
success, radius = brush_new.get_radius()
assert success == True
assert radius == 32767.0
'''
success, returned_spikes = brush_new.set_spikes(22)
assert success == True
assert returned_spikes == 20
success, spikes = brush_new.get_spikes()
assert success == True
assert spikes == 20
success, returned_hardness = brush_new.set_hardness(2.0)
assert success == True
assert returned_hardness == 1.0
success, hardness = brush_new.get_hardness()
assert success == True
assert hardness == 1.0
success, returned_aspect_ratio = brush_new.set_aspect_ratio(2000)
assert success == True
assert returned_aspect_ratio == 1000.0
success, aspect_ratio = brush_new.get_aspect_ratio()
assert success == True
assert aspect_ratio == 1000.0
success, returned_angle = brush_new.set_angle(270)
assert success == True
assert returned_angle == 90
success, angle = brush_new.get_angle()
assert success == True
assert angle == 90
"""
Cleanup
"""
success = brush_new.delete()
assert success == True
|
