[Libreoffice-bugs] [Bug 144700] Transparency in ODT page area bitmap fill is not exported to PDF

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=144700

V Stuart Foote <vstuart.foote at utsa.edu> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|Writer                      |Printing and PDF export
            Summary|What I see in ODT file      |Transparency in ODT page
                   |(LibreOffice UI) is not     |area bitmap fill is not
                   |what I see when I export it |exported to PDF
                   |to PDF                      |
     Ever confirmed|1                           |0
           See Also|                            |https://bugs.documentfounda
                   |                            |tion.org/show_bug.cgi?id=92
                   |                            |924
             Blocks|                            |103378
             Status|REOPENED                    |UNCONFIRMED

--- Comment #25 from V Stuart Foote <vstuart.foote at utsa.edu> ---
Yep, no font caused impact here.

The black strip *is* mishandling of a transparent strip in the GIMP 2.10.24
generated 10000000000003AC000002C1E6E482E8A2E80086.png image, attachment 175260
[1] used as the tiled bitmap 'Area' of the "StandardPage" Page Style of the
affected pages.

Export to PDF gets mishandled differently depending on the os/DE, unnoticeable
in Windows based export and preview--but still is mishandled.

=-ref-=
[1] ImageMagick details:

PS C:\Users\vsfoote\downloads> identify -verbose
10000000000003AC000002C1E6E482E8A2E80086.png
Image:
  Filename: 10000000000003AC000002C1E6E482E8A2E80086.png
  Format: PNG (Portable Network Graphics)
  Mime type: image/png
  Class: DirectClass
  Geometry: 940x705+0+0
  Resolution: 37x37
  Print size: 25.4054x19.0541
  Units: PixelsPerCentimeter
  Colorspace: sRGB
  Type: TrueColorAlpha
  Base type: Undefined
  Endianness: Undefined
  Depth: 8-bit
  Channel depth:
    Red: 8-bit
    Green: 8-bit
    Blue: 8-bit
    Alpha: 1-bit
  Channel statistics:
    Pixels: 662700
    Red:
      min: 0  (0)
      max: 255 (1)
      mean: 242.18 (0.949727)
      median: 255 (1)
      standard deviation: 55.4911 (0.217612)
      kurtosis: 15.0248
      skewness: -4.12153
      entropy: 0.0477442
    Green:
      min: 0  (0)
      max: 255 (1)
      mean: 241.914 (0.948681)
      median: 255 (1)
      standard deviation: 56.1885 (0.220347)
      kurtosis: 14.5196
      skewness: -4.06348
      entropy: 0.0463244
    Blue:
      min: 0  (0)
      max: 255 (1)
      mean: 241.924 (0.94872)
      median: 255 (1)
      standard deviation: 56.1462 (0.220181)
      kurtosis: 14.5225
      skewness: -4.06375
      entropy: 0.0482924
    Alpha:
      min: 0  (0)
      max: 255 (1)
      mean: 242.34 (0.950355)
      median: 255 (1)
      standard deviation: 55.3889 (0.217211)
      kurtosis: 15.195
      skewness: -4.14669
      entropy: 0.284889
  Image statistics:
    Overall:
      min: 0  (0)
      max: 255 (1)
      mean: 242.09 (0.949371)
      median: 255 (1)
      standard deviation: 55.8037 (0.218838)
      kurtosis: 14.811
      skewness: -4.09849
      entropy: 0.106812
  Alpha: none   #00000000
  Colors: 343
  Histogram: //truncated for space
    32900: (0,0,0,0) #00000000 none
    ...
//above are the transparent px, below is bg, deleted the rest - vsf
    ...
    628547: (255,255,255,255) #FFFFFFFF white
  Rendering intent: Perceptual
  Gamma: 0.454545
  Chromaticity:
    red primary: (0.64,0.33)
    green primary: (0.3,0.6)
    blue primary: (0.15,0.06)
    white point: (0.3127,0.329)
  Matte color: grey74
  Background color: white
  Border color: srgb(223,223,223)
  Transparent color: none
  Interlace: None
  Intensity: Undefined
  Compose: Over
  Page geometry: 940x705+0+0
  Dispose: Undefined
  Iterations: 0
  Compression: Zip
  Orientation: TopLeft
  Profiles:
    Profile-exif: 2440 bytes
    Profile-icc: 672 bytes
  Properties:
    date:create: 2021-09-25T14:06:06+00:00
    date:modify: 2021-09-24T13:20:56+00:00
    exif:BitsPerSample: 8, 8, 8
    exif:ColorSpace: 1
    exif:DateTime: 2021:09:07 19:05:14
    exif:ExifOffset: 190
    exif:ImageLength: 705
    exif:ImageWidth: 940
    exif:Software: GIMP 2.10.24
    exif:thumbnail:BitsPerSample: 8, 8, 8
    exif:thumbnail:Compression: 6
    exif:thumbnail:ImageLength: 192
    exif:thumbnail:ImageWidth: 256
    exif:thumbnail:JPEGInterchangeFormat: 316
    exif:thumbnail:JPEGInterchangeFormatLength: 2118
    exif:thumbnail:PhotometricInterpretation: 6
    exif:thumbnail:SamplesPerPixel: 3
    icc:copyright: Public Domain
    icc:description: GIMP built-in sRGB
    icc:manufacturer: GIMP
    icc:model: sRGB
    png:bKGD: chunk was found (see Background color, above)
    png:iCCP: chunk was found
    png:IHDR.bit-depth-orig: 8
    png:IHDR.bit_depth: 8
    png:IHDR.color-type-orig: 6
    png:IHDR.color_type: 6 (RGBA)
    png:IHDR.interlace_method: 0 (Not interlaced)
    png:IHDR.width,height: 940, 705
    png:pHYs: x_res=3701, y_res=3701, units=1
    png:text: 1 tEXt/zTXt/iTXt chunks were found
    png:text-encoded profiles: 1 were found
    png:tIME: 2021-09-07T11:05:14Z
    signature: 0d97bc8be7a72ab4c5a5f48445895007aaff8452be188e861f8fcdf4a59ad6fd
  Artifacts:
    verbose: true
  Tainted: False
  Filesize: 11188B
  Number pixels: 662700
  Pixels per second: 70.5443MP
  User time: 0.031u
  Elapsed time: 0:01.009
  Version: ImageMagick 7.0.11-12 Q16 x64 2021-05-09 https://imagemagick.org


Referenced Bugs:

https://bugs.documentfoundation.org/show_bug.cgi?id=103378
[Bug 103378] [META] PDF export bugs and enhancements
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