old_contents: # -*- coding: utf-8 -*-
  
  # Standard library imports
  import os
  
  # Third party imports
  from psforms import *
  from psforms.validators import required
  from psforms.fields import *
  
  
  class PostRenderForm(Form):
  
      meta = FormMetaData(
          title='Post Render',
          description='Post Render Callbacks',
          header=False,
          labels_on_top=False,
          columns=2,
      )
  
  
  class PlayblastForm(Form):
  
      meta = FormMetaData(
          header=True,
          icon=os.path.join(os.path.dirname(__file__), 'icon.png'),
          title='Review',
          subforms_as_groups=True,
      )
      preset = StringOptionField('Preset', options=['Current Settings'])
      capture_mode = ButtonOptionField(
          'Capture Mode',
          options=['sequence', 'snapshot'],
          label_on_top=False
      )
      filename = SaveFileField('Filename', validators=(required,))
      camera = StringOptionField('Camera')
      resolution = Int2Field(
          'Resolution',
          range1=(0, 8192),
          range2=(0, 8192),
          default=(960, 540)
      )
      postrender = PostRenderForm()
  
  
  class NewPresetForm(Form):
  
      meta = FormMetaData(
          title='New Preset',
          description='Create a new preset from the selected panel',
          header=True,
      )
  
      panel = StringOptionField('Panel')
      name = StringField('Preset Name', validators=(required,))
  
  
  class DelPresetForm(Form):
  
      meta = FormMetaData(
          title='Delete Preset',
          description='Are you sure you want to delete this preset?',
          header=True,
      )
  
new_contents: # -*- coding: utf-8 -*-
  
  # Standard library imports
  import os
  
  # Third party imports
  from psforms import *
  from psforms.exc import ValidationError
  from psforms.validators import required
  from psforms.fields import *
  
  
  def check_resolution(value):
      if (value[0] % 2) != 0 or (value[1] % 2) != 0:
          raise ValidationError('Resolution must use even numbers.')
      return True
  
  
  class PostRenderForm(Form):
  
      meta = FormMetaData(
          title='Post Render',
          description='Post Render Callbacks',
          header=False,
          labels_on_top=False,
          columns=2,
      )
  
  
  class PlayblastForm(Form):
  
      meta = FormMetaData(
          header=True,
          icon=os.path.join(os.path.dirname(__file__), 'icon.png'),
          title='Review',
          subforms_as_groups=True,
      )
      preset = StringOptionField('Preset', options=['Current Settings'])
      capture_mode = ButtonOptionField(
          'Capture Mode',
          options=['sequence', 'snapshot'],
          label_on_top=False
      )
      filename = SaveFileField('Filename', validators=(required,))
      camera = StringOptionField('Camera')
      resolution = Int2Field(
          'Resolution',
          range1=(0, 8192),
          range2=(0, 8192),
          default=(960, 540),
          validators=(check_resolution,)
      )
      postrender = PostRenderForm()
  
  
  class NewPresetForm(Form):
  
      meta = FormMetaData(
          title='New Preset',
          description='Create a new preset from the selected panel',
          header=True,
      )
  
      panel = StringOptionField('Panel')
      name = StringField('Preset Name', validators=(required,))
  
  
  class DelPresetForm(Form):
  
      meta = FormMetaData(
          title='Delete Preset',
          description='Are you sure you want to delete this preset?',
          header=True,
      )
  
subject: Add validator for resolution that enforces even numbers.