# Open a Photoshop document located in the Photoshop samples folder
# You must first create a File object to pass into the open method.
from comtypes.client import GetActiveObject
# Start up Photoshop application
# Or get Reference to already running Photoshop application instance
# app = Dispatch('Photoshop.Application')
app = GetActiveObject("Photoshop.Application")
fileName = "C:\Git\PS_Samples_Files\Layer Comps.psd"
docRef = app.Open(fileName)
class WorkerThread(QThread):
def __init__(self, parent=None):
super(WorkerThread, self).__init__(parent)
self.filestoprocess = []
self.in_width = 0
self.in_height = 0
self.in_resample = 0
self.in_resolution = 0
def process_args(self, files, width, resolution, resample):
self.filestoprocess = files
self.in_width = int(width)
self.in_resolution = resolution
self.in_resample = resample
def process_args2(self, files, width, height, resolution, resample):
self.filestoprocess = files
self.in_width = int(width)
self.in_height = int(height)
self.in_resolution = resolution
self.in_resample = resample
def run(self):
try:
self.psapp = GetActiveObject("Photoshop.Application")
# We don't want any Photoshop dialogs displayed during automated execution
psDisplayNoDialogs = 3 # from enum PsDialogModes
self.psapp.displayDialogs = psDisplayNoDialogs
psAutomatic = 8 # from enum PsResampleMethod
psPreserveDetails = 9 # from enum PsResampleMethod
psBicubicSmoother = 6 # from enum PsResampleMethod
psBicubicSharper = 5 # from enum PsResampleMethod
psBicubicAutomatic = 7 # from enum PsResampleMethod
psNearestNeighbor = 2 # from enum PsResampleMethod
psBilinear = 3 # from enum PsResampleMethod
psBicubic = 4 # from enum PsResampleMethod
psNoResampling = 1 # from enum PsResampleMethod
for file in self.filestoprocess:
print("thread: " + file)
docRef = self.psapp.Open(file)
# if height is given, don't maintain aspect ratio
if int(self.in_height) > 0:
docRef.ResizeImage(self.in_width, self.in_height, None,
psAutomatic)
# time.sleep(3)
# maintain aspect ratio
else:
doc_width = docRef.Width
doc_height = docRef.Height
# maintain aspect ratio
new_height = (doc_height / doc_width) * self.in_width
docRef.ResizeImage(self.in_width, new_height, None,
psAutomatic)
docRef.Save()
docRef.Close()
# to prevent application busy COM error
time.sleep(1)
except Exception as thread_err:
print(thread_err)
