228 lines
8.1 KiB
Python
228 lines
8.1 KiB
Python
#
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# This program source code file is part of KiCad, a free EDA CAD application.
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#
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# Copyright (C) 2023 Mark Roszko <mark.roszko@gmail.com>
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# Copyright (C) 2023 KiCad Developers
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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# MA 02110-1301, USA.
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#
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import difflib
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import cairosvg
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import logging
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import subprocess
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from typing import Tuple
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from pathlib import Path
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from PIL import Image, ImageChops, ImageFilter
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import numpy as np
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logger = logging.getLogger("cli_util")
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Image.MAX_IMAGE_PIXELS = 800 * 1024 * 1024 // 4 # Increase limit to ~800MB uncompressed RGBA, 4bpp (~600MB RGB, 3bpp)
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def run_and_capture( command: list ) -> Tuple[ str, str, int ]:
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logger.info("Executing command \"%s\"", " ".join( command ))
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proc = subprocess.Popen( command,
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stdout = subprocess.PIPE,
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stderr = subprocess.PIPE,
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encoding = 'utf-8'
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)
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out,err = proc.communicate()
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return out, err, proc.returncode
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def textdiff_files( golden_filepath: str, new_filepath: str, skip: int = 0 ) -> bool:
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status: bool = True
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with open( golden_filepath, 'r' ) as f:
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golden_lines = f.readlines()[skip:]
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with open( new_filepath, 'r' ) as f:
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new_lines = f.readlines()[skip:]
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diff = difflib.unified_diff( golden_lines, new_lines, fromfile = golden_filepath, tofile = new_filepath )
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diff_text = ''.join(list(diff))
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if diff_text != "":
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logger.info( "Text diff found:" )
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logger.info( diff_text )
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return diff_text == ""
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def image_is_blank( image_path: str ) -> bool:
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img = Image.open( image_path )
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sum = np.sum( np.asarray( img ) )
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img.close()
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return sum == 0
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def images_are_equal( image1_path: str, image2_path: str ) -> bool:
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# Note: if modifying this function - please add new tests for it in test_utils.py
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image1 = Image.open( image1_path )
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image2 = Image.open( image2_path )
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if image1.size != image2.size:
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return False
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if image1.mode != image2.mode:
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return False
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diff = ImageChops.difference( image1, image2 )
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sum = np.sum( np.asarray( diff ) )
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retval = True
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if sum != 0.0:
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# Images are not identical - lets allow 1 pixel error difference (for curved edges)
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diff_multi_bands = diff.split()
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binary_multi_bands = []
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for band_diff in diff_multi_bands:
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thresholded_band = band_diff.point( lambda x: x > 0 and 255 )
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binary_multi_bands.append( thresholded_band.convert( "1" ) )
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binary_result = binary_multi_bands[0]
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for i in range( 1, len( binary_multi_bands ) ):
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binary_result = ImageChops.logical_or( binary_result, binary_multi_bands[i] )
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eroded_result = binary_result.copy().filter( ImageFilter.MinFilter( 3 ) ) # erode once (trim 1 pixel)
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eroded_result_sum = np.sum( np.asarray( eroded_result ) )
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retval = eroded_result_sum == 0
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# Save images, cleanup
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#if not retval:
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diff_name = image1.filename + ".diff.png"
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diff.save( diff_name ) # Note: if the image has alpha, the diff will be mostly transparent
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diff.close()
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diff_name = image1.filename + ".binary_result.png"
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binary_result.save( diff_name )
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binary_result.close()
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diff_name = image1.filename + ".eroded_result_" + str( eroded_result_sum )+ ".png"
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eroded_result.save( diff_name )
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eroded_result.close()
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# Cleanup
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image1.close()
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image2.close()
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return retval
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def get_png_paths( generated_path: str, source_path : str, suffix : str = "" ) -> Tuple[str, str]:
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generated_stem = Path( generated_path ).stem
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generated_png_path = Path( generated_path ).with_stem( generated_stem + suffix).with_suffix( ".png" )
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if generated_png_path.exists():
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generated_png_path.unlink() # Delete file
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# store source png in same folder as generated, easier to compare
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source_stem = Path( source_path ).stem
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source_png_path = Path( generated_path ).with_stem( source_stem + "-source" + suffix).with_suffix( ".png" )
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if source_png_path.exists():
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source_png_path.unlink() # Delete file
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return str( generated_png_path ), str( source_png_path )
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def svgs_are_equivalent( svg_generated_path: str, svg_source_path: str, comparison_dpi: int ) -> bool:
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png_generated, png_source = get_png_paths( svg_generated_path, svg_source_path )
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cairosvg.svg2png( url=svg_generated_path,
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write_to=png_generated,
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dpi=comparison_dpi )
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cairosvg.svg2png( url=svg_source_path,
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write_to=png_source,
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dpi=comparison_dpi )
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return images_are_equal( png_generated , png_source )
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def gerbers_are_equivalent( gerber_generated_path : str, gerber_source_path : str, comparison_dpi : int,
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originInches : Tuple[float, float],
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windowsizeInches : Tuple[float, float] ) -> bool:
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# Calculate tiles required
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noTilesRowsCols = np.array( [1,1] )
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increaseRow = True
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tileSizeInches=np.array( windowsizeInches ) / noTilesRowsCols
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while( np.prod( tileSizeInches * comparison_dpi ) > Image.MAX_IMAGE_PIXELS // 2 ):
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if increaseRow:
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noTilesRowsCols[0]+=1
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else:
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noTilesRowsCols[1]+=1
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increaseRow=not increaseRow
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tileSizeInches=np.array( windowsizeInches ) / noTilesRowsCols
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gerberGeneratedIsBlank=True
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gerberSourceIsBlank=True
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gerbersAreEqual=True
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for row in range( noTilesRowsCols[0] ):
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for col in range( noTilesRowsCols[1] ):
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tileOrigin=np.array( originInches ) + ( np.array( [row,col] ) * tileSizeInches )
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png_generated, png_source = get_png_paths( gerber_generated_path, gerber_source_path, f"R{row}C{col}" )
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convert_gerber_to_png( gerber_generated_path, png_generated, comparison_dpi, tileOrigin, tileSizeInches )
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convert_gerber_to_png( gerber_source_path, png_source, comparison_dpi, tileOrigin, tileSizeInches )
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gerberGeneratedIsBlank = gerberGeneratedIsBlank and image_is_blank( png_generated )
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gerberSourceIsBlank = gerberSourceIsBlank and image_is_blank( png_source )
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gerbersAreEqual = gerbersAreEqual and images_are_equal( png_generated, png_source )
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assert( not gerberGeneratedIsBlank )
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assert( not gerberSourceIsBlank ) # make sure test case is generated correctly
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return gerbersAreEqual
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def convert_gerber_to_png( gerber_path : str, png_path : str, dpi : int,
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originInches : Tuple[float, float],
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windowsizeInches : Tuple[float, float] ):
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originStr="{:.2f}".format(originInches[0]) + "x" + "{:.2f}".format(originInches[1])
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windowsizeInchesStr="{:.2f}".format(windowsizeInches[0]) + "x" + "{:.2f}".format(windowsizeInches[1])
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stdout, stderr, exitcode = run_and_capture(["gerbv", "--export=png", f"--dpi={dpi}",
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f"--origin={originStr}",
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f"--window_inch={windowsizeInchesStr}",
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f"--output={png_path}",
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"--foreground=#FFFFFF", "--background=#000000",
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gerber_path
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])
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def is_gerbv_installed() -> bool:
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try:
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stdout, stderr, exitcode = run_and_capture(["gerbv", "--version"])
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except:
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return False
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return exitcode == 0 and stdout is not None and stdout.startswith("gerbv version")
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