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Grease Pencil: Python: Add masks.add and masks.remove functions

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Restore RNA API for layer mask add/remove.

This adds two functions on the `layer.mask_layers` property:
* `mask_layers.add(Layer)` to add a new mask.
* `mask_layers.remove(Mask)` to remove a mask.

Ref: #152782
Pull Request: https://projects.blender.org/blender/blender/pulls/154181
This commit is contained in:
phantomsoldierking 2026-02-17 18:17:07 +01:00 • committed by Falk David
parent 54fbc73c5f
commit 7ff9668c49
6 changed files with 152 additions and 0 deletions
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48
tests/python/bl_pyapi_grease_pencil.py
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@ -83,6 +83,54 @@ class TestGreasePencilLayers(unittest.TestCase):
self.assertEqual(round(self.gp.layers[1].tint_factor, 1), self.tint_factors[2])
self.assertEqual(round(self.gp.layers[2].tint_factor, 1), self.tint_factors[0])
def test_grease_pencil_layer_mask_add(self):
while len(self.gp.layers) < 4:
self.gp.layers.new(f"Layer_{len(self.gp.layers)}")
layer = self.gp.layers[0]
mask_layer_1 = self.gp.layers[1]
mask_layer_2 = self.gp.layers[2]
mask_layer_3 = self.gp.layers[3]
mask1 = layer.mask_layers.add(mask_layer_1)
self.assertIsNotNone(mask1)
self.assertEqual(len(layer.mask_layers), 1)
mask2 = layer.mask_layers.add(mask_layer_2)
self.assertIsNotNone(mask2)
self.assertEqual(len(layer.mask_layers), 2)
mask3 = layer.mask_layers.add(mask_layer_3)
self.assertIsNotNone(mask3)
self.assertEqual(len(layer.mask_layers), 3)
# Test duplicate prevention - adding same layer again
mask_dup = layer.mask_layers.add(mask_layer_1)
self.assertIsNotNone(mask_dup)
self.assertEqual(len(layer.mask_layers), 3) # Should still be 3, not 4
def test_grease_pencil_layer_mask_remove(self):
while len(self.gp.layers) < 4:
self.gp.layers.new(f"Layer_{len(self.gp.layers)}")
layer = self.gp.layers[0]
mask_layer_1 = self.gp.layers[1]
mask_layer_2 = self.gp.layers[2]
mask_layer_3 = self.gp.layers[3]
mask1 = layer.mask_layers.add(mask_layer_1)
mask2 = layer.mask_layers.add(mask_layer_2)
mask3 = layer.mask_layers.add(mask_layer_3)
self.assertEqual(len(layer.mask_layers), 3)
layer.mask_layers.remove(mask2)
self.assertEqual(len(layer.mask_layers), 2)
layer.mask_layers.remove(mask1)
layer.mask_layers.remove(mask3)
self.assertEqual(len(layer.mask_layers), 0)
class TestGreasePencilFrame(unittest.TestCase):
def setUp(self):