commit 2f5e169ac272e91d51d5b2209067ee07a4d60718
Author: Koji Yokota <[email protected]>
Date: Tue Jul 21 16:12:11 2026 +0900
Make background of math preview transparent
Thanks for Jürgen's help
---
lib/scripts/legacy_lyxpreview2ppm.py | 13 ++++---------
lib/scripts/lyxpreview2bitmap.py | 2 +-
src/Color.cpp | 1 +
src/ColorCode.h | 2 ++
src/frontends/qt/GuiPrefs.cpp | 1 +
src/mathed/InsetMathHull.cpp | 2 +-
6 files changed, 10 insertions(+), 11 deletions(-)
diff --git a/lib/scripts/legacy_lyxpreview2ppm.py
b/lib/scripts/legacy_lyxpreview2ppm.py
index 6be99d360e..575a34be5a 100644
--- a/lib/scripts/legacy_lyxpreview2ppm.py
+++ b/lib/scripts/legacy_lyxpreview2ppm.py
@@ -202,7 +202,6 @@ def legacy_latex_file(latex_file, fg_color, bg_color):
use_polyglossia_re = re.compile(b"\\s*\\\\usepackage{polyglossia}")
use_preview_re = re.compile(b"\\s*\\\\usepackage\\[([^]]+)\\]{preview}")
fg_color_gr = make_texcolor(fg_color, True)
- bg_color_gr = make_texcolor(bg_color, True)
tmp = tempfile.TemporaryFile()
@@ -234,10 +233,8 @@ def legacy_latex_file(latex_file, fg_color, bg_color):
tmp.write(b"""
\\usepackage{color}
\\definecolor{lyxfg}{rgb}{%s}
-\\definecolor{lyxbg}{rgb}{%s}
-\\pagecolor{lyxbg}
\\usepackage{polyglossia}
-""" % (fg_color_gr, bg_color_gr))
+""" % fg_color_gr)
polyglossia = True
continue
success = 1
@@ -247,22 +244,20 @@ def legacy_latex_file(latex_file, fg_color, bg_color):
tmp.write(b"""
\\usepackage{color}
\\definecolor{lyxfg}{rgb}{%s}
-\\definecolor{lyxbg}{rgb}{%s}
-\\pagecolor{lyxbg}
\\makeatletter
\\def\\@tempa{cmr}
\\ifx\\f@family\\@tempa
\\IfFileExists{lmodern.sty}{\\usepackage{lmodern}}{\\usepackage{ae,aecompl}}
\\fi
-""" % (fg_color_gr, bg_color_gr))
+""" % fg_color_gr)
tmp.write(b"""
\\usepackage[%s,tightpage]{preview}
\\makeatletter
\\ifdefined\\AddToHook
-
\\AddToHook{env/preview/before}{\\leavevmode\\begingroup\\color{lyxbg}\\special{background
\\current@color}\\special{ps::clippath fill}}
+
\\AddToHook{env/preview/before}{\\leavevmode\\begingroup\\special{ps::clippath
fill}}
\\AddToHook{env/preview/after}{\\endgroup}
\\else
-
\\g@addto@macro\\preview{\\leavevmode\\begingroup\\color{lyxbg}\\special{background
\\current@color}\\special{ps::clippath fill}}
+ \\g@addto@macro\\preview{\\leavevmode\\begingroup\\special{ps::clippath
fill}}
\\g@addto@macro\\endpreview{\\endgroup}
\\fi
\\g@addto@macro\\preview{\\color{lyxfg}}
diff --git a/lib/scripts/lyxpreview2bitmap.py b/lib/scripts/lyxpreview2bitmap.py
index 56314356d1..1542af1663 100755
--- a/lib/scripts/lyxpreview2bitmap.py
+++ b/lib/scripts/lyxpreview2bitmap.py
@@ -393,7 +393,7 @@ def main(argv):
bg_color = bytes(bg_color, 'ascii')
fg_color_dvipng = make_texcolor(fg_color, False).decode('ascii')
- bg_color_dvipng = make_texcolor(bg_color, False).decode('ascii')
+ bg_color_dvipng = "Transparent"
# External programs used by the script.
latex = find_exe_or_terminate(latex or latex_commands)
diff --git a/src/Color.cpp b/src/Color.cpp
index 5fd774afa8..1ca2c0ced3 100644
--- a/src/Color.cpp
+++ b/src/Color.cpp
@@ -299,6 +299,7 @@ ColorSet::ColorSet()
{ Color_none, N_("none"), "none", black, black, "none" },
{ Color_black, N_("black"), "black", black, black, "black" },
{ Color_white, N_("white"), "white", white, white, "white" },
+ { Color_transparent, N_("transparent"), "transparent", transparent,
transparent, "transparent" },
{ Color_blue, N_("blue"), "blue", blue, blue, "blue" },
{ Color_brown, N_("brown"), "brown", brown, brown, "brown" },
{ Color_cyan, N_("cyan"), "cyan", cyan, cyan, "cyan" },
diff --git a/src/ColorCode.h b/src/ColorCode.h
index 3492498746..d101b43d62 100644
--- a/src/ColorCode.h
+++ b/src/ColorCode.h
@@ -21,6 +21,8 @@ enum ColorCode {
///
Color_white,
///
+ Color_transparent,
+ ///
Color_blue,
///
Color_brown,
diff --git a/src/frontends/qt/GuiPrefs.cpp b/src/frontends/qt/GuiPrefs.cpp
index 175afdc6d8..adcbc4a051 100644
--- a/src/frontends/qt/GuiPrefs.cpp
+++ b/src/frontends/qt/GuiPrefs.cpp
@@ -995,6 +995,7 @@ PrefColors::PrefColors(GuiPreferences * form)
if (lc == Color_none
|| lc == Color_black
|| lc == Color_white
+ || lc == Color_transparent
|| lc == Color_blue
|| lc == Color_brown
|| lc == Color_cyan
diff --git a/src/mathed/InsetMathHull.cpp b/src/mathed/InsetMathHull.cpp
index 9ba086a715..96fa9a42c3 100644
--- a/src/mathed/InsetMathHull.cpp
+++ b/src/mathed/InsetMathHull.cpp
@@ -615,7 +615,7 @@ ColorCode InsetMathHull::backgroundColor(PainterInfo const
& pi) const
Dimension const dim = dimension(*pi.base.bv);
if (previewTooSmall(dim))
return Color_error;
- return graphics::PreviewLoader::backgroundColor();
+ return Color_transparent;
}
return InsetMath::backgroundColor(pi);
}
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