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# SPDX-License-Identifier: GPL-2.0-or-later
import bpy
from bpy.types import Operator
from bpy.props import StringProperty
class EditExternally(Operator):
"""Edit image in an external application"""
bl_idname = "image.external_edit"
bl_label = "Image Edit Externally"
bl_options = {'REGISTER'}
filepath: StringProperty(
subtype='FILE_PATH',
)
@staticmethod
def _editor_guess(context):
import sys
image_editor = context.preferences.filepaths.image_editor
# use image editor in the preferences when available.
if not image_editor:
if sys.platform[:3] == "win":
image_editor = ["start"] # not tested!
elif sys.platform == "darwin":
image_editor = ["open"]
else:
image_editor = ["gimp"]
else:
if sys.platform == "darwin":
# blender file selector treats .app as a folder
# and will include a trailing backslash, so we strip it.
image_editor.rstrip('\\')
image_editor = ["open", "-a", image_editor]
else:
image_editor = [image_editor]
return image_editor
def execute(self, context):
import os
import subprocess
filepath = self.filepath
if not filepath:
self.report({'ERROR'}, "Image path not set")
return {'CANCELLED'}
if not os.path.exists(filepath) or not os.path.isfile(filepath):
self.report({'ERROR'},
"Image path %r not found, image may be packed or "
"unsaved" % filepath)
return {'CANCELLED'}
cmd = self._editor_guess(context) + [filepath]
try:
subprocess.Popen(cmd)
except:
import traceback
traceback.print_exc()
self.report({'ERROR'},
"Image editor could not be launched, ensure that "
"the path in User Preferences > File is valid, and Blender has rights to launch it")
return {'CANCELLED'}
return {'FINISHED'}
def invoke(self, context, _event):
import os
sd = context.space_data
try:
image = sd.image
except AttributeError:
self.report({'ERROR'}, "Context incorrect, image not found")
return {'CANCELLED'}
if image.packed_file:
self.report({'ERROR'}, "Image is packed, unpack before editing")
return {'CANCELLED'}
if sd.type == 'IMAGE_EDITOR':
filepath = image.filepath_from_user(image_user=sd.image_user)
else:
filepath = image.filepath
filepath = bpy.path.abspath(filepath, library=image.library)
self.filepath = os.path.normpath(filepath)
self.execute(context)
return {'FINISHED'}
class ProjectEdit(Operator):
"""Edit a snapshot of the 3D Viewport in an external image editor"""
bl_idname = "image.project_edit"
bl_label = "Project Edit"
bl_options = {'REGISTER'}
_proj_hack = [""]
def execute(self, context):
import os
EXT = "png" # could be made an option but for now ok
for image in bpy.data.images:
image.tag = True
# opengl buffer may fail, we can't help this, but best report it.
try:
bpy.ops.paint.image_from_view()
except RuntimeError as err:
self.report({'ERROR'}, str(err))
return {'CANCELLED'}
image_new = None
for image in bpy.data.images:
if not image.tag:
image_new = image
break
if not image_new:
self.report({'ERROR'}, "Could not make new image")
return {'CANCELLED'}
filepath = os.path.basename(bpy.data.filepath)
filepath = os.path.splitext(filepath)[0]
# fixes <memory> rubbish, needs checking
# filepath = bpy.path.clean_name(filepath)
if bpy.data.is_saved:
filepath = "//" + filepath
else:
filepath = os.path.join(bpy.app.tempdir, "project_edit")
obj = context.object
if obj:
filepath += "_" + bpy.path.clean_name(obj.name)
filepath_final = filepath + "." + EXT
i = 0
while os.path.exists(bpy.path.abspath(filepath_final)):
filepath_final = filepath + ("%.3d.%s" % (i, EXT))
i += 1
image_new.name = bpy.path.basename(filepath_final)
ProjectEdit._proj_hack[0] = image_new.name
image_new.filepath_raw = filepath_final # TODO, filepath raw is crummy
image_new.file_format = 'PNG'
image_new.save()
filepath_final = bpy.path.abspath(filepath_final)
try:
bpy.ops.image.external_edit(filepath=filepath_final)
except RuntimeError as re:
self.report({'ERROR'}, str(re))
return {'FINISHED'}
class ProjectApply(Operator):
"""Project edited image back onto the object"""
bl_idname = "image.project_apply"
bl_label = "Project Apply"
bl_options = {'REGISTER'}
def execute(self, _context):
image_name = ProjectEdit._proj_hack[0] # TODO, deal with this nicer
try:
image = bpy.data.images[image_name, None]
except KeyError:
import traceback
traceback.print_exc()
self.report({'ERROR'}, "Could not find image '%s'" % image_name)
return {'CANCELLED'}
image.reload()
bpy.ops.paint.project_image(image=image_name)
return {'FINISHED'}
classes = (
EditExternally,
ProjectApply,
ProjectEdit,
)
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