e955c94ed3
Listing the "Blender Foundation" as copyright holder implied the Blender Foundation holds copyright to files which may include work from many developers. While keeping copyright on headers makes sense for isolated libraries, Blender's own code may be refactored or moved between files in a way that makes the per file copyright holders less meaningful. Copyright references to the "Blender Foundation" have been replaced with "Blender Authors", with the exception of `./extern/` since these this contains libraries which are more isolated, any changed to license headers there can be handled on a case-by-case basis. Some directories in `./intern/` have also been excluded: - `./intern/cycles/` it's own `AUTHORS` file is planned. - `./intern/opensubdiv/`. An "AUTHORS" file has been added, using the chromium projects authors file as a template. Design task: #110784 Ref !110783.
147 lines
3.6 KiB
Python
Executable File
147 lines
3.6 KiB
Python
Executable File
#!/usr/bin/env python3
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# SPDX-FileCopyrightText: 2014-2022 Blender Authors
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#
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# SPDX-License-Identifier: GPL-2.0-or-later
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_IS_BIG_ENDIAN = (__import__("sys").byteorder != 'little')
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def write_png(buf, width, height):
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import zlib
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import struct
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# reverse the vertical line order and add null bytes at the start
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width_byte_4 = width * 4
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raw_data = b"".join(
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b'\x00' + buf[span:span + width_byte_4]
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for span in range((height - 1) * width * 4, -1, - width_byte_4)
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)
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def png_pack(png_tag, data):
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chunk_head = png_tag + data
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return struct.pack("!I", len(data)) + chunk_head + struct.pack("!I", 0xFFFFFFFF & zlib.crc32(chunk_head))
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return b"".join([
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b'\x89PNG\r\n\x1a\n',
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png_pack(b'IHDR', struct.pack("!2I5B", width, height, 8, 6, 0, 0, 0)),
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png_pack(b'IDAT', zlib.compress(raw_data, 9)),
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png_pack(b'IEND', b'')])
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def icon_decode_head(f_src):
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import struct
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# 2 ints
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temp_data = f_src.read(4 * 2)
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icon_w, icon_h = struct.unpack('<2I', temp_data)
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temp_data = f_src.read(4 * 2)
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orig_x, orig_y = struct.unpack('<2I', temp_data)
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temp_data = f_src.read(4 * 2)
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canvas_w, canvas_h = struct.unpack('<2I', temp_data)
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return (icon_w, icon_h,
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orig_x, orig_y,
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canvas_w, canvas_h)
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def icon_decode(f_src):
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head = icon_decode_head(f_src)
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(icon_w, icon_h,
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orig_x, orig_y,
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canvas_w, canvas_h) = head
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# pixels
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import array
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pixels = f_src.read(icon_w * icon_h * 4)
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pixels = array.array('I', pixels)
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if _IS_BIG_ENDIAN:
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pixels.byteswap()
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return head, pixels
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def icon_read(file_src):
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with open(file_src, 'rb') as f_src:
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head, pixels = icon_decode(f_src)
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return head, pixels
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def icon_merge(file_src, pixels_canvas, canvas_w, canvas_h):
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""" Takes an icon filepath and merges into a pixel array
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"""
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head, pixels = icon_read(file_src)
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(icon_w, icon_h,
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orig_x, orig_y,
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w_canvas_test, h_canvas_test) = head
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assert w_canvas_test == canvas_w
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assert h_canvas_test == canvas_h
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for x in range(icon_w):
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for y in range(icon_h):
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# get pixel
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pixel = pixels[(y * icon_w) + x]
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# set pixel
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dst_x = orig_x + x
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dst_y = orig_y + y
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pixels_canvas[(dst_y * canvas_w) + dst_x] = pixel
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def icondir_to_png(path_src, file_dst):
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""" Takes a path full of 'dat' files and writes out
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"""
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import os
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import array
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files = [os.path.join(path_src, f) for f in os.listdir(path_src) if f.endswith(".dat")]
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# First check if we need to bother.
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if os.path.exists(file_dst):
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dst_time = os.path.getmtime(file_dst)
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has_newer = False
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for f in files:
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if os.path.getmtime(f) > dst_time:
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has_newer = True
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break
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if not has_newer:
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return
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with open(files[0], 'rb') as f_src:
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(icon_w, icon_h,
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orig_x, orig_y,
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canvas_w, canvas_h) = icon_decode_head(f_src)
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# load in pixel data
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pixels_canvas = array.array('I', [0]) * (canvas_w * canvas_h)
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for f in files:
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icon_merge(f, pixels_canvas, canvas_w, canvas_h)
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# write pixels
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with open(file_dst, 'wb') as f_dst:
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pixels_data = pixels_canvas.tobytes()
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image_data = write_png(pixels_data, canvas_w, canvas_h)
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f_dst.write(image_data)
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def main_ex(argv):
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import os
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path_src = argv[-2].rstrip(os.sep)
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file_dst = argv[-1]
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icondir_to_png(path_src, file_dst)
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def main():
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import sys
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main_ex(sys.argv)
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if __name__ == "__main__":
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main()
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