bl-image-editor-plus/addon/app.py

534 lines
16 KiB
Python

'''
Copyright (C) 2021 - 2025 Akaneyu
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
'''
import os
import bpy
import bpy.utils.previews
import blf
import numpy as np
from . ui_renderer import UIRenderer as UIRenderer
from . import utils
class AreaSession:
def __init__(self):
self.selection = None
self.selection_region = None
self.selecting = False
self.layer_moving = False
self.layer_rotating = False
self.layer_scaling = False
self.prevent_layer_update_event = False
self.prev_image = None
class Session:
def __init__(self):
self.icons = None
self.keymaps = []
self.cached_image_pixels = None
self.cached_image_hsl = None
self.cached_layer_location = None
self.ui_renderer = None
self.copied_image_pixels = None
self.copied_image_settings = None
self.copied_layer_settings = None
self.areas = {}
def get_session():
global session
return session
def get_area_session(context):
area_session = session.areas.get(context.area, None)
if not area_session:
area_session = AreaSession()
session.areas[context.area] = area_session
return area_session
def draw_handler():
global session
context = bpy.context
area_session = get_area_session(context)
info_text = None
width, height, img_name = 0, 0, ''
img = context.area.spaces.active.image
if img:
width, height = img.size[0], img.size[1]
# render selection frame
if img and area_session.selection or area_session.selection_region:
if area_session.selection:
selection = area_session.selection
view_x1 = selection[0][0] / width
view_y1 = selection[0][1] / height
view_x2 = selection[1][0] / width
view_y2 = selection[1][1] / height
region_pos1 = context.region.view2d.view_to_region(view_x1, view_y1, clip=False)
region_pos2 = context.region.view2d.view_to_region(view_x2, view_y2, clip=False)
else:
region_pos1, region_pos2 = area_session.selection_region
if not session.ui_renderer:
session.ui_renderer = UIRenderer()
region_size = [region_pos2[0] - region_pos1[0],
region_pos2[1] - region_pos1[1]]
session.ui_renderer.render_selection_frame(region_pos1, region_size)
# render layers
if img:
if not session.ui_renderer:
session.ui_renderer = UIRenderer()
img_props = img.imageeditorplus_properties
selected_layer_index = img_props.selected_layer_index
layers = img_props.layers
for i, layer in reversed(list(enumerate(layers))):
layer_img = bpy.data.images.get(layer.name, None)
if layer_img:
layer_width, layer_height = layer_img.size[0], layer_img.size[1]
layer_pos = layer.location
layer_pos1 = [layer_pos[0], layer_pos[1] + layer_height]
layer_pos2 = [layer_pos[0] + layer_width, layer_pos[1]]
layer_view_x1 = layer_pos1[0] / width
layer_view_y1 = 1.0 - layer_pos1[1] / height
layer_region_pos1 = context.region.view2d.view_to_region(
layer_view_x1, layer_view_y1, clip=False)
layer_view_x2 = layer_pos2[0] / width
layer_view_y2 = 1.0 - layer_pos2[1] / height
layer_region_pos2 = context.region.view2d.view_to_region(
layer_view_x2, layer_view_y2, clip=False)
layer_region_size = [layer_region_pos2[0] - layer_region_pos1[0],
layer_region_pos2[1] - layer_region_pos1[1]]
if not layer.hide:
session.ui_renderer.render_image(layer_img, layer_region_pos1,
layer_region_size, layer.rotation, layer.scale)
if i == selected_layer_index:
session.ui_renderer.render_selection_frame(
layer_region_pos1, layer_region_size, layer.rotation,
layer.scale)
# release the selection if the image is changed
if area_session.selection or area_session.selection_region:
if area_session.prev_image:
if img != area_session.prev_image:
cancel_selection(context)
elif width != area_session.prev_image_width \
or height != area_session.prev_image_height:
crop_selection(context)
area_session.prev_image = img
area_session.prev_image_width = width
area_session.prev_image_height = height
if area_session.layer_moving \
or area_session.layer_rotating \
or area_session.layer_scaling:
info_text = "LMB: Perform " \
+ "RMB: Cancel"
area_width = context.area.width
# info text
if info_text:
ui_scale = context.preferences.system.ui_scale
session.ui_renderer.render_info_box((0, 0), (area_width, 20 * ui_scale))
blf.position(0, 8 * ui_scale, 6 * ui_scale, 0)
blf.size(0, 11 * ui_scale) if bpy.app.version >= (3, 6) \
else blf.size(0, 11 * ui_scale, 72)
blf.color(0, 0.7, 0.7, 0.7, 1.0)
blf.draw(0, info_text)
def get_curve_node():
node_group = bpy.data.node_groups.get('imageeditorplus')
if not node_group:
node_group = bpy.data.node_groups.new('imageeditorplus', 'ShaderNodeTree')
nodes = node_group.nodes
curve_node = next((node for node in nodes if node.bl_idname == 'ShaderNodeRGBCurve'),
None)
if not curve_node:
curve_node = nodes.new('ShaderNodeRGBCurve')
return curve_node
def get_curve_mapping():
return get_curve_node().mapping
def reset_curve_mapping():
curve_mapping = get_curve_mapping()
for curve in curve_mapping.curves:
curve_points = curve.points
num_curve_points = len(curve_points)
# remove extra points (> 2)
if num_curve_points > 2:
for i in range(num_curve_points - 2):
curve_points.remove(curve_points[2])
curve_points[0].location[0] = 0
curve_points[0].location[1] = 0
curve_points[0].select = False
curve_points[1].location[0] = 1.0
curve_points[1].location[1] = 1.0
curve_points[1].select = False
curve_mapping.update()
def get_active_layer(context):
img = context.area.spaces.active.image
if not img:
return None
img_props = img.imageeditorplus_properties
layers = img_props.layers
selected_layer_index = img_props.selected_layer_index
if selected_layer_index == -1 or selected_layer_index >= len(layers):
return None
return layers[selected_layer_index]
def get_target_image(context):
layer = get_active_layer(context)
if layer:
return bpy.data.images.get(layer.name, None)
else:
return context.area.spaces.active.image
def cache_image(img, need_hsl=False):
global session
pixels = utils.read_pixels_from_image(img)
session.cached_image_pixels = pixels
hsl = None
if need_hsl:
session.cached_image_hsl = utils.rgb_to_hsl(pixels)
return pixels, hsl
def get_image_cache():
global session
pixels = session.cached_image_pixels
hsl = session.cached_image_hsl
if pixels is not None:
pixels = pixels.copy()
if hsl is not None:
hsl = hsl.copy()
return pixels, hsl
def revert_image_cache(img):
global session
pixels = session.cached_image_pixels
if pixels is None:
return
utils.write_pixels_to_image(img, pixels)
def clear_image_cache():
global session
session.cached_image_pixels = None
session.cached_image_hsl = None
def convert_selection(context):
area_session = get_area_session(context)
img = context.area.spaces.active.image
if not img:
return
width, height = img.size[0], img.size[1]
selection_region = area_session.selection_region
if not selection_region:
return
x1, y1 = context.region.view2d.region_to_view(*selection_region[0])
x2, y2 = context.region.view2d.region_to_view(*selection_region[1])
x1, x2 = sorted((x1, x2))
y1, y2 = sorted((y1, y2))
x1 = round(x1 * width)
y1 = round(y1 * height)
x2 = round(x2 * width)
y2 = round(y2 * height)
area_session.selection = [[x1, y1], [x2, y2]]
crop_selection(context)
def crop_selection(context):
area_session = get_area_session(context)
img = context.area.spaces.active.image
if not img:
return
width, height = img.size[0], img.size[1]
if not area_session.selection:
return
[x1, y1], [x2, y2] = area_session.selection
# clamp
x1 = max(min(x1, width), 0)
y1 = max(min(y1, height), 0)
x2 = max(min(x2, width), 0)
y2 = max(min(y2, height), 0)
# avoid from zero width or height
if x2 - x1 <= 0:
if x2 < width:
x2 = x2 + 1
else:
x1 = x1 - 1
if y2 - y1 <= 0:
if y2 < height:
y2 = y2 + 1
else:
y1 = y1 - 1
area_session.selection = [[x1, y1], [x2, y2]]
def cancel_selection(context):
global session
area_session = get_area_session(context)
area_session.selection = None
area_session.selection_region = None
def get_selection(context):
global session
area_session = get_area_session(context)
return area_session.selection
def get_target_selection(context):
global session
area_session = get_area_session(context)
selection = area_session.selection
if not selection:
return None
img = context.area.spaces.active.image
if not img:
return selection
img_props = img.imageeditorplus_properties
layers = img_props.layers
selected_layer_index = img_props.selected_layer_index
if selected_layer_index == -1 or selected_layer_index >= len(layers):
return selection
return None
def refresh_image(context):
wm = context.window_manager
img = context.area.spaces.active.image
if not img:
return
context.area.spaces.active.image = img
img.update()
if not hasattr(wm, 'imagelayersnode_api') or wm.imagelayersnode_api.VERSION < (1, 1, 0):
return
wm.imagelayersnode_api.update_pasted_layer_nodes(img)
def apply_layer_transform(img, rot, scale):
global session
if not session.ui_renderer:
session.ui_renderer = UIRenderer()
buff, width, height = session.ui_renderer.render_image_offscreen(img, rot, scale)
pixels = np.array([[pixel for pixel in row] for row in buff], np.float32) / 255.0
# gamma correction
utils.convert_colorspace(pixels, 'Linear',
'Linear' if img.is_float else img.colorspace_settings.name)
return pixels, width, height
def create_layer(base_img, pixels, img_settings, layer_settings):
base_width, base_height = base_img.size
target_width, target_height = pixels.shape[1], pixels.shape[0]
layer_img_prefix = '#layer'
layer_img_name = base_img.name + layer_img_prefix
layer_img = bpy.data.images.new(layer_img_name, width=target_width, height=target_height,
alpha=True, float_buffer=base_img.is_float)
layer_img.colorspace_settings.name = base_img.colorspace_settings.name
# gamma correction
pixels = pixels.copy()
utils.convert_colorspace(pixels,
'Linear' if img_settings['is_float']
else img_settings['colorspace_name'],
'Linear' if base_img.is_float else base_img.colorspace_settings.name)
utils.write_pixels_to_image(layer_img, pixels)
layer_img.use_fake_user = True
layer_img.pack()
img_props = base_img.imageeditorplus_properties
layers = img_props.layers
layer = layers.add()
layer.name = layer_img.name
layer.location = [int((base_width - target_width) / 2.0),
int((base_height - target_height) / 2.0)]
layer_img_postfix = \
layer_img.name[layer_img.name.rfind(layer_img_prefix) + len(layer_img_prefix):]
if layer_img_postfix:
layer.label = 'Pasted Layer ' + layer_img_postfix
else:
layer.label = 'Pasted Layer'
if layer_settings:
layer.rotation = layer_settings['rotation']
layer.scale = layer_settings['scale']
layer.custom_data = layer_settings['custom_data']
layers.move(len(layers) - 1, 0)
img_props.selected_layer_index = 0
rebuild_image_layers_nodes(base_img)
def rebuild_image_layers_nodes(img):
wm = bpy.context.window_manager
if not hasattr(wm, 'imagelayersnode_api') or wm.imagelayersnode_api.VERSION < (1, 1, 0):
return
wm.imagelayersnode_api.rebuild_image_layers_nodes(img)
def on_layer_placement_changed(self, context):
area_session = get_area_session(context)
if area_session.prevent_layer_update_event:
return
img = context.area.spaces.active.image
if not img:
return
rebuild_image_layers_nodes(img)
def on_layer_visible_changed(self, context):
refresh_image(context)
def on_selected_layer_index_changed(self, context):
if self.selected_layer_index != -1:
cancel_selection(context)
def load_icons():
global session
script_dir = os.path.dirname(os.path.realpath(__file__))
icons = bpy.utils.previews.new()
icons_dir = os.path.join(script_dir, "icons")
for file_name in os.listdir(icons_dir):
icon_name = os.path.splitext(file_name)[0]
icons.load(icon_name, os.path.join(icons_dir, file_name), 'IMAGE')
session.icons = icons
def dispose_icons():
global session
bpy.utils.previews.remove(session.icons)
def cleanup_scene():
node_group = bpy.data.node_groups.get('imageeditorplus')
if node_group:
bpy.data.node_groups.remove(node_group)
@bpy.app.handlers.persistent
def save_pre_handler(args):
cleanup_scene()
for img in bpy.data.images:
if img.source != 'VIEWER':
if img.is_dirty:
if img.packed_files or not img.filepath:
img.pack()
else:
img.save()
class IMAGE_EDITOR_PLUS_WindowPropertyGroup(bpy.types.PropertyGroup):
foreground_color: bpy.props.FloatVectorProperty(name='Foreground Color', subtype='COLOR_GAMMA',
min=0, max=1.0, size=3, default=(1.0, 1.0, 1.0))
background_color: bpy.props.FloatVectorProperty(name='Background Color', subtype='COLOR_GAMMA',
min=0, max=1.0, size=3, default=(0, 0, 0))
class IMAGE_EDITOR_PLUS_LayerPropertyGroup(bpy.types.PropertyGroup):
location: bpy.props.IntVectorProperty(size=2, update=on_layer_placement_changed)
rotation: bpy.props.FloatProperty(subtype='ANGLE', update=on_layer_placement_changed)
scale: bpy.props.FloatVectorProperty(size=2, default=(1.0, 1.0),
update=on_layer_placement_changed)
label: bpy.props.StringProperty()
hide: bpy.props.BoolProperty(name='Hide', update=on_layer_visible_changed)
custom_data: bpy.props.StringProperty(default='{}')
class IMAGE_EDITOR_PLUS_ImagePropertyGroup(bpy.types.PropertyGroup):
layers: bpy.props.CollectionProperty(type=IMAGE_EDITOR_PLUS_LayerPropertyGroup)
selected_layer_index: bpy.props.IntProperty(update=on_selected_layer_index_changed)
session = Session()