Building Photoshop layers with Python

composite.py

import os
import comtypes.client
app = comtypes.client.CreateObject('Photoshop.Application.60') # CS6

# maya config
project_path = 'd:/project/alice/maya'
log_path     = project_path + '/log'
images_path  = project_path + '/images'
layers       = ['master', 'prop_matte', 'shadow', 'wall_matte']
passes       = ['beauty', 'N']

# psd opt
psd_opt = comtypes.client.CreateObject('Photoshop.PhotoshopSaveOptions.60') # CS6
psd_opt.annotations = False
psd_opt.alphaChannels = True
psd_opt.layers = True
psd_opt.spotColors = True
psd_opt.embedColorProfile = True

def get_image_size(path):
    doc = app.Open(path)
    size = (doc.width, doc.height)
    doc.Close(2) # 2 (psDoNotSaveChanges)
    return size

def copy_file_contents_to_clipboard(path):
    doc = app.Open(path)
    doc.layers[0].Copy()
    doc.Close(2) # 2 (psDoNotSaveChanges)

def create_layer_from_file(doc, layer_name, path):
    copy_file_contents_to_clipboard(path)
    
    app.activeDocument = doc
    layer = doc.artLayers.add() # Create Layer
    layer.name = layer_name # Rename Layer
    
    doc.activeLayer = layer # Select Layer
    doc.Paste() # Paste into

def composite_ma(ma):
    # 이름 정리
    name = os.path.splitext(os.path.basename(ma))[0] # hc_column_corridor
    path_tokens = os.path.dirname(os.path.abspath(ma)).split('\\')
    theme = path_tokens[-1] # HeartCastle
    category = path_tokens[-2] # Housing
    category_theme = category + '/' + theme # Housing/HeartCastle

    # 새 포토샵 문서를 만든다
    app.Preferences.RulerUnits = 1 # Pixel
    w, h = get_image_size( images_path + '/' + category_theme + '/' + name + '/masterLayer/beauty.tif' ) # 기본 뷰티를 이용해 그림 크기를 얻는다.
    doc = app.Documents.Add(w, h, 72, name, 2, 1, 1)
    app.activeDocument = doc
    
    # 파일로 부터 새로운 레이어를 만든다
    for layer in layers:
        create_layer_from_file(doc, layer , images_path + '/' + category_theme + '/' + name + '/' + layer + '/' + 'beauty.tif')

    # 저장한다
    psd_path = images_path + '/' + category_theme + '/' + name + ".psd"
    print(psd_path)
    doc.SaveAs(psd_path, psd_opt)
    doc.Close()
   
def composite(files):
    for file in files:
        composite_ma(file)

def get_include_list(filepath):
    f = open(filepath)
    content = f.readlines()
    content = [x.strip() for x in content] # 줄 끝에 '\n'를 제거.
    result = []
    for path in content:
        if path[0] != '#': # 주석 처리된 파일을 생략.
            result.append(path)
    return result
    
# main
if __name__ == '__main__':
    files = get_include_list('include.txt')
    composite(files)

That is very useful, thanks a lot for posting!

Unfortunately, I can't find any documentation about interfacing Python to Photoshop in detail. It's always a surfing between official Photoshop JS Documentation and experimenting with Python for me.

Well done. Thank you! I love the copy to clipboard hack which actually works for the most part.

For anyone one else who need transparency with a paste in place solution I added a rgba (1, 1, 1, 1) to each corner of the image. Reading Photoshop's documentation I couldn't find a paste in place or with an anchor solution which offset all of my layers depending on the content.

I wish it didn't have to be this hard to add images as layers :/

@oiehot do you know how to Paste(...) at a specific x,y position? I didn't find how to do it with:

doc.Paste(IntoSelection=...)

@oiehot do you know how to Paste(...) at a specific x,y position? I didn't find how to do it with:

doc.Paste(IntoSelection=...)

I couldn't find it on the API. However, you can paste it and move it.

function pasteTo(doc, layerName, x, y, pivot) {
    oldUnit = app.preferences.rulerUnits;
    app.preferences.rulerUnits = Units.PIXELS; // Set to Pixel Unit
    
    app.activeDocument = doc; // Select Document
    layer = doc.artLayers.add(); // Create Layer
    layer.name = layerName; // Rename Layer
    doc.activeLayer = layer; // Select Layer
    doc.paste(); // Paset Into Layer

    if (pivot == "leftTop") {
        translateX = x - Number(layer.bounds[0]);
        translateY = y - Number(layer.bounds[1]);
    }
    else if (pivot == "center") {
        centerX = Number(layer.bounds[0] + (layer.bounds[2] - layer.bounds[0]) / 2);
        centerY = Number(layer.bounds[1] + (layer.bounds[3] - layer.bounds[1]) / 2);
        translateX = x - centerX;
        translateY = y - centerY;
    }
    else {
        translateX = 0;
        translateY = 0;
    }
    
    layer.translate( translateX, translateY );
    
    app.preferences.rulerUnits = oldUnit; // Restore Unit
}

pasteTo(app.activeDocument, "newLayer", 10, 10, "center");

Thank you very much @oiehot!