[LyX/master] Fix transparency background

[Koji Yokota]

commit c06789f8c8267840c26408e732ae381708fb816e
Author: Koji Yokota <yok...@lyx.org>
Date:   Wed Sep 16 18:57:08 2026 +0900

    Fix transparency background
    
    Thanks to Pavel and Claude
---
 lib/scripts/legacy_lyxpreview2ppm.py | 10 ----------
 src/graphics/PreviewLoader.cpp       |  9 +--------
 src/mathed/InsetMathHull.cpp         |  1 -
 3 files changed, 1 insertion(+), 19 deletions(-)

diff --git a/lib/scripts/legacy_lyxpreview2ppm.py 
b/lib/scripts/legacy_lyxpreview2ppm.py
index 5d6e00ab1f..36d2e8fcee 100644
--- a/lib/scripts/legacy_lyxpreview2ppm.py
+++ b/lib/scripts/legacy_lyxpreview2ppm.py
@@ -280,16 +280,6 @@ def legacy_latex_file(latex_file, fg_color, bg_color):
 """ % previewopts)
         if bg_color != "transparent":
             tmp.write(b"""
-\\ifdefined\\AddToHook
-  
\\AddToHook{env/preview/before}{\\leavevmode\\begingroup\\special{ps::clippath 
fill}}
-  \\AddToHook{env/preview/after}{\\endgroup}
-\\else
-  \\g@addto@macro\\preview{\\leavevmode\\begingroup\\special{ps::clippath 
fill}}
-  \\g@addto@macro\\endpreview{\\endgroup}
-\\fi
-""")
-        else:
-            tmp.write(b"""
 \\ifdefined\\AddToHook
   
\\AddToHook{env/preview/before}{\\leavevmode\\begingroup\\color{lyxbg}\\special{background
 \\current@color}\\special{ps::clippath fill}}
   \\AddToHook{env/preview/after}{\\endgroup}
diff --git a/src/graphics/PreviewLoader.cpp b/src/graphics/PreviewLoader.cpp
index e796739407..5cd2023470 100644
--- a/src/graphics/PreviewLoader.cpp
+++ b/src/graphics/PreviewLoader.cpp
@@ -680,14 +680,7 @@ void PreviewLoader::Impl::startLoading(bool wait)
        // The colors should be customizable.
        if (!buffer_.isExporting()) {
                ColorCode const fg = PreviewLoader::foregroundColor();
-               cs << " --fg " << theApp()->hexName(fg);
-               ColorCode const bg = PreviewLoader::backgroundColor();
-               ARGBColor const bga = argbFromHexName(
-                           lcolor.get32bitHexName(bg, 
theApp()->isInDarkMode()));
-               if (bga.a < 128)
-                       cs << " --bg \"transparent\"";
-               else
-                       cs << " --bg " << theApp()->hexName(bg);
+               cs << " --fg " << theApp()->hexName(fg) << " --bg 
\"transparent\"";
        }
 
        cs << latexparam;
diff --git a/src/mathed/InsetMathHull.cpp b/src/mathed/InsetMathHull.cpp
index 170162b561..2ca494230f 100644
--- a/src/mathed/InsetMathHull.cpp
+++ b/src/mathed/InsetMathHull.cpp
@@ -615,7 +615,6 @@ ColorCode InsetMathHull::backgroundColor(PainterInfo const 
& pi) const
                Dimension const dim = dimension(*pi.base.bv);
                if (previewTooSmall(dim))
                        return Color_error;
-               return Color_transparent;
        }
        return InsetMath::backgroundColor(pi);
 }
-- 
lyx-cvs mailing list
lyx-cvs@lists.lyx.org
https://lists.lyx.org/mailman/listinfo/lyx-cvs