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Fix T95591: Crash on drawing with measure tool with tweak fallback tool

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Using press to activate the Tweak tool doesn't work well when used a
fallback tool as the drag event is often used by the current tool -
making it impossible not to select when dragging (unless the fallback
tool is disabled entirely).
Resolve this by using CLICK events when the Tweak tool is used as a
fallback.

Even though this avoids the crash, check for null-pointer de-reference
since changes to the key-map shouldn't cause operators to crash.

Note that the ability for operators to access a gizmo before it's fully
initialized is a more general problem that should be addressed, but out
of scope for a bug-fix.

Reviewed By: zeddb, JulienKaspar, Severin

Maniphest Tasks: T95591

Ref D14231
This commit is contained in:
Campbell Barton
2022-03-07 21:47:00 +11:00
parent 72e20785e1
commit 0e51defcf4
2 changed files with 34 additions and 9 deletions
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23
release/scripts/presets/keyconfig/keymap_data/blender_default.py
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@@ -442,13 +442,18 @@ def _template_items_change_frame(params):
# Tool System Templates
def _template_items_tool_select(params, operator, cursor_operator, *, extend):
def _template_items_tool_select(params, operator, cursor_operator, fallback, *, extend):
if params.select_mouse == 'LEFTMOUSE':
# Immediate select without quick delay.
# By default use 'PRESS' for immediate select without quick delay.
# Fallback key-maps 'CLICK' since 'PRESS' events passes through (allowing either click or drag).
#
# NOTE: When the active (non-fallback) tool uses a key-map that activates it's primary tool on drag,
# it's important that this key-map uses click and not press. Otherwise it becomes impossible to use
# the tool without selecting elements under the cursor.
return [
(operator, {"type": 'LEFTMOUSE', "value": 'PRESS'},
(operator, {"type": 'LEFTMOUSE', "value": 'CLICK' if fallback else 'PRESS'},
{"properties": [("deselect_all", True)]}),
(operator, {"type": 'LEFTMOUSE', "value": 'PRESS', "shift": True},
(operator, {"type": 'LEFTMOUSE', "value": 'CLICK' if fallback else 'PRESS', "shift": True},
{"properties": [(extend, True)]}),
]
else:
@@ -6283,7 +6288,7 @@ def km_image_editor_tool_uv_select(params, *, fallback):
{"space_type": 'IMAGE_EDITOR', "region_type": 'WINDOW'},
{"items": [
*([] if (fallback and (params.select_mouse == 'RIGHTMOUSE')) else _template_items_tool_select(
params, "uv.select", "uv.cursor_set", extend="extend")),
params, "uv.select", "uv.cursor_set", fallback, extend="extend")),
*([] if (not params.use_fallback_tool_rmb) else _template_uv_select(
type=params.select_mouse, value=params.select_mouse_value, legacy=params.legacy)),
]},
@@ -6490,7 +6495,7 @@ def km_3d_view_tool_select(params, *, fallback):
{"space_type": 'VIEW_3D', "region_type": 'WINDOW'},
{"items": [
*([] if (fallback and (params.select_mouse == 'RIGHTMOUSE')) else _template_items_tool_select(
params, "view3d.select", "view3d.cursor3d", extend="toggle")),
params, "view3d.select", "view3d.cursor3d", fallback, extend="toggle")),
*([] if (not params.use_fallback_tool_rmb) else _template_view3d_select(
type=params.select_mouse, value=params.select_mouse_value, legacy=params.legacy, exclude_mod="ctrl")),
]},
@@ -7402,7 +7407,7 @@ def km_3d_view_tool_edit_gpencil_select(params, *, fallback):
{"space_type": 'VIEW_3D', "region_type": 'WINDOW'},
{"items": [
*([] if (fallback and (params.select_mouse == 'RIGHTMOUSE')) else _template_items_tool_select(
params, "gpencil.select", "view3d.cursor3d", extend="toggle")),
params, "gpencil.select", "view3d.cursor3d", fallback, extend="toggle")),
*([] if (not params.use_fallback_tool_rmb) else _template_view3d_gpencil_select(
type=params.select_mouse, value=params.select_mouse_value, legacy=params.legacy)),
]},
@@ -7540,7 +7545,7 @@ def km_3d_view_tool_sculpt_gpencil_select(params):
return (
"3D View Tool: Sculpt Gpencil, Tweak",
{"space_type": 'VIEW_3D', "region_type": 'WINDOW'},
{"items": _template_items_tool_select(params, "gpencil.select", "view3d.cursor3d", extend="toggle")},
{"items": _template_items_tool_select(params, "gpencil.select", "view3d.cursor3d", False, extend="toggle")},
)
@@ -7580,7 +7585,7 @@ def km_sequencer_editor_tool_generic_select(params, *, fallback):
{"space_type": 'SEQUENCE_EDITOR', "region_type": 'WINDOW'},
{"items": [
*([] if (fallback and (params.select_mouse == 'RIGHTMOUSE')) else _template_items_tool_select(
params, "sequencer.select", "sequencer.cursor_set", extend="toggle")),
params, "sequencer.select", "sequencer.cursor_set", fallback, extend="toggle")),
*([] if (not params.use_fallback_tool_rmb) else _template_sequencer_preview_select(
type=params.select_mouse, value=params.select_mouse_value, legacy=params.legacy)),