Laelaps.Utils.ImageLoader Class Reference

Class to handle image loading. More...

Public Member Functions
def	__init__ (self, py_pkg=None, image_paths=[])
	Constructor. More...
def	loadImage (self, filename)
	Open image from file and convert to PhotoImage. More...
def	openImage (self, filename)
	Open image from file. More...

Public Attributes
	m_pyPkg
	m_imagePaths

Detailed Description

Class to handle image loading.

Definition at line 76 of file Utils.py.

Constructor & Destructor Documentation

def Laelaps.Utils.ImageLoader.__init__	(		self,
			py_pkg = None,
			image_paths = []
	)

Constructor.

Parameters

py_pkg	Python resource (e.g. "laelaps_control.images").
image_paths	List of directory paths to search for the image.

Definition at line 83 of file Utils.py.

References Laelaps.Utils.ImageLoader.m_imagePaths, and Laelaps.Utils.ImageLoader.m_pyPkg.

  def __init__(self, py_pkg=None, image_paths=[]):
    self.m_pyPkg = py_pkg
    if len(image_paths) > 0:
      self.m_imagePaths = image_paths
    else:
      self.m_imagePaths = ['.']
  

Member Function Documentation

def Laelaps.Utils.ImageLoader.loadImage	(		self,
			filename
	)

Open image from file and convert to PhotoImage.

Parameters

filename

Image file name.

Returns

Returns image widget on success, None on failure.

Definition at line 97 of file Utils.py.

References Laelaps.Utils.ImageLoader.openImage().

  def loadImage(self, filename):
    img = self.openImage(filename)
    if img is not None:
      return ImageTk.PhotoImage(img)
    else:
      return None

def Laelaps.Utils.ImageLoader.openImage	(		self,
			filename
	)

Open image from file.

Parameters

filename

Image file name.

Returns

Returns image widget on success, None on failure.

Definition at line 141 of file Utils.py.

References Laelaps.Utils.ImageLoader.m_imagePaths, and Laelaps.Utils.ImageLoader.m_pyPkg.

Referenced by Laelaps.Utils.ImageLoader.loadImage().

  def openImage(self, filename):
    # no file name
    if filename is None or len(filename) == 0:
      return None;
    # relative file name - try python resource(s) first
    if self.m_pyPkg:
      try:
        fqname = resource_filename(self.m_pyPkg, filename)
        try:
          return Image.open(fqname)
        except IOError:
          pass
      except ImportError:
        pass
    # relative file name - search path for file
    for path in self.m_imagePaths:
      fqname = path + os.path.sep + filename
      try:
        return Image.open(fqname)
      except IOError:
        continue
    return None



# ------------------------------------------------------------------------------
# Misc. Utilities
# ------------------------------------------------------------------------------

#
#

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The documentation for this class was generated from the following file:

• sw/pyModules/modules/Laelaps/Utils.py