This is a follow up after bug 150557 was fixed. Open attachment 181975 [details] from bug 150557. It has 2 tables formatted with borders using Transparency = 0%. The cells in the table on the left have background color set to "Color" and "white". The table has shadow using Red color and transparency set to 0%. Notice that the shadows are indeed consistent with 0% transparency. The table on the right is a copy of the table on the left, but the cell background was set to None. Notice that now the shadows are fainter and are not consistent with 0% transparency. It appears that some transparency is still being applied, even though transparency is set to 0%. To reproduce this issue: 1) Select all cells in the table on the left 2) Using the toolbar, set the color to None 3) Notice that the shadow now has some transparency (although transparency is set to 0%) 4) To check that, right-click the table, go to Table Properties - Shadow System info Version: 7.6.2.1 (X86_64) / LibreOffice Community Build ID: 60(Build:1) CPU threads: 16; OS: Linux 6.2; UI render: default; VCL: kf5 (cairo+xcb) Locale: pt-BR (pt_BR.UTF-8); UI: en-US Ubuntu package version: 4:7.6.2~rc1-0ubuntu0.23.04.1~lo1 Calc: threaded Also present in Version: 24.2.0.0.alpha0+ (X86_64) / LibreOffice Community Build ID: 1cf500366e8de4c1c89c1f9235629d2efeaa89af CPU threads: 16; OS: Linux 6.2; UI render: default; VCL: kf5 (cairo+xcb) Locale: pt-BR (pt_BR.UTF-8); UI: en-US Calc: CL threaded
Reproducible with Version: 24.2.0.0.alpha0+ (X86_64) / LibreOffice Community Build ID: 506fb766885f147a40f09ffca803b4e31b14b1e1 CPU threads: 16; OS: Windows 10.0 Build 22621; UI render: Skia/Raster; VCL: win Locale: es-ES (es_ES); UI: en-US Calc: CL threaded Jumbo In the help talks only about the object. May should be a request for enhancement. https://help.libreoffice.org/24.2/en-US/text/shared/01/05210600.html?System=WIN&DbPAR=IMPRESS&HID=cui/ui/shadowtabpage/ShadowTabPage#bm_id3150620
Created attachment 200595 [details] Example file with similar settings in PP and Impress Applying the same(-ish) settings on a table in PP however gives the same result as we see in Impress. If we apply none background and similar shadow settings, we get the same pink blurred shadow in both.
Created attachment 200596 [details] Example file in PP and Impress with white bg table If the background is white and shadow settings are similar(-ish), we get a more defined red shadow, in both.
Created attachment 200597 [details] Similar settings made in PP, saved as pptx For reference, this PP-made file looks the same in Impress. So the logic to apply blurred shadow, with 0% transparency (entirely visible) seems to be reliably working.
With all the above, I think this behavior can be considered reasonable. Looking into the example file and the description, I think this was a misunderstanding: 3) Notice that the shadow now has some transparency (although transparency is set to 0%) -> the shadow here has a Blur value set, this is why it is a pink blur. 0% Transparency means it should be visible, 100% means it should not be visible.