Manipulating CMX Formats

Aspose.Imaging for Python via .NET now supports the CMX (Corel Metafile Exchange) format. CMX files contain vector graphics as well as metadata that describes the image.

Converting CMX to PNG

Using Aspose.Imaging for Python via .NET, developers can convert CMX files to PNG images. This topic explains the approach to load existing CMX file and convert it to PNG.

The following code snippet shows you how to convert CMX files to PNG.

from aspose.imaging import Image, SmoothingMode
from aspose.imaging.imageoptions import CmxRasterizationOptions, PngOptions, PositioningTypes
import os


if 'TEMPLATE_DIR' in os.environ:
	templates_folder = os.environ['TEMPLATE_DIR']
else:
	templates_folder = r"C:\Users\USER\Downloads\templates"

delete_output = 'SAVE_OUTPUT' not in os.environ
data_dir = templates_folder
with Image.load(os.path.join(data_dir, "template.cmx")) as image:
	cmx_options = CmxRasterizationOptions()
	cmx_options.positioning = PositioningTypes.DEFINED_BY_DOCUMENT
	cmx_options.smoothing_mode = SmoothingMode.ANTI_ALIAS
	png_options = PngOptions()
	png_options.vector_rasterization_options = cmx_options
	image.save(os.path.join(data_dir, "result.png"), png_options)

if delete_output:
	os.remove(os.path.join(data_dir, "result.png"))

Memory Strategy optimization

Loading and creating of CMX images can be proceeded using memory strategy optimization - i.e. limiting memory buffer size for operation.

from aspose.imaging import Image, SmoothingMode, LoadOptions, TextRenderingHint, SmoothingMode
from aspose.imaging.imageoptions import CmxRasterizationOptions, PngOptions, PositioningTypes
import os

if 'TEMPLATE_DIR' in os.environ:
	templates_folder = os.environ['TEMPLATE_DIR']
else:
	templates_folder = r"C:\Users\USER\Downloads\templates"

delete_output = 'SAVE_OUTPUT' not in os.environ
data_dir = templates_folder
load_options = LoadOptions()
load_options.buffer_size_hint = 10 # set 10 MB as a limit for pixels storing
with Image.load(os.path.join(data_dir, "template.cmx"), load_options) as image:
	cmx_options = CmxRasterizationOptions()
	cmx_options.text_rendering_hint = TextRenderingHint.SINGLE_BIT_PER_PIXEL
	cmx_options.smoothing_mode = SmoothingMode.ANTI_ALIAS
	cmx_options.positioning = PositioningTypes.DEFINED_BY_DOCUMENT
	png_options = PngOptions()
	png_options.vector_rasterization_options = cmx_options
	image.save(os.path.join(data_dir, "result.png"), png_options)

if delete_output:
	os.remove(os.path.join(data_dir, "result.png"))