[Libreoffice-bugs] [Bug 131037] New: Character spacing problems with Microsoft Fax printer in Draft print quality

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=131037

            Bug ID: 131037
           Summary: Character spacing problems with Microsoft Fax printer
                    in Draft print quality
           Product: LibreOffice
           Version: 5.3.0.3 release
          Hardware: x86-64 (AMD64)
                OS: Windows (All)
            Status: UNCONFIRMED
          Severity: normal
          Priority: medium
         Component: Printing and PDF export
          Assignee: libreoffice-bugs at lists.freedesktop.org
          Reporter: jason at binarycoder.net

Description:
Using the Windows 10 built-in "Fax" printer in Draft (200x100 dpi) quality
there are character spacing problems. These problems do not occur in Normal
(200x200 dpi) quality.

This is similar to bug 124123 regarding Dymo LabelWriter with non-square dpi,
but much easier to reproduce since everything needed to reproduce it comes with
Windows.

On the other hand, bug 124123 affects the best resolution supported by the Dymo
printer whereas this bug affects the worst resolution of the Fax printer.
Of the versions available in the "old" download archive, I have narrowed down
the regression to between 5.3.0.0.alpha1 (good) and 5.3.0.0.beta1 (bad). This
may have to do with the fact that the dots in this resolution are rectangular
(dpiX != dpiY).

The odt files needed to reproduce it are in the attached archive as well as the
output tif files under 5.3.0.0.alpha1, 5.3.0.0.beta1, and 6.4.1.2.

Steps to Reproduce:
1. Open the file Portrait.odt.
2. Click File, Print.
3. Ensure the "Fax" printer is selected.
4. In the Properties, ensure:
   Paper size: Letter
   Image quality: Draft (200x100 dpi)
   Orientation: Portrait
5. Notice that the preview area shows lots of problems.
6. Click Cancel if prompted for Fax Setup.
7. When the New Fax dialog appears, drag and drop the .tif attachment to your
Desktop, etc.
8. Open the .tif in a graphics program.

Repeat steps for Landscape.odt with Orientation: Landscape in step 4.

Actual Results:
Portrait:
(1) Bad kerning, such as between "i"/"m" and "i"/"n".
(3) Too much spacing between all letters.

Landscape:
(1) Bad kerning, such as between "m" and "p"
(3) Too little spacing between all letters.

Expected Results:
WYSIWYG results


Reproducible: Always


User Profile Reset: Yes


OpenGL enabled: Yes

Additional Info:
Versions Tested:

Version: 5.3.0.0.alpha1 (x64)
Build ID: f4ca1573fcf445164c068c1046ab5d084e1b005f
CPU Threads: 12; OS Version: Windows 6.19; UI Render: GL; 
Locale: en-US (en_US); Calc: CL

*** START OF REGRESSION ***
Version: 5.3.0.0.beta1 (x64)
Build ID: 690f553ecb3efd19143acbf01f3af4e289e94536
CPU Threads: 12; OS Version: Windows 6.19; UI Render: GL; Layout Engine: new; 
Locale: en-US (en_US); Calc: CL

Version: 6.4.1.2 (x64)
Build ID: 4d224e95b98b138af42a64d84056446d09082932
CPU threads: 12; OS: Windows 10.0 Build 18363; UI render: GL; VCL: win; 
Locale: en-US (en_US); UI-Language: en-US
Calc: CL

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