Add frontispiece layout to KOMA classes

development/FORMAT

@@ -7,6 +7,9 @@ changes happened in particular if possible. A good example would be
 
 -----------------------
 
+2021-01-28 Jürgen Spitzmüller <spitz@lyx.org>
+ 	* Format incremented to 606: Support KOMA \frontispiece.
+
 2021-01-22 Jürgen Spitzmüller <spitz@lyx.org>
  	* Format incremented to 605: Extended variable table cell support.
  	  - Multicolumn now supports multiple paragraphs in non-fixed-width context.

lib/layouts/scrclass.inc

@@ -286,6 +286,11 @@ Style Extratitle
 	LatexName             extratitle
 End
 
+Style Frontispiece
+	CopyStyle             Titlehead
+	LatexName             frontispiece
+End
+
 Input stdstruct.inc
 
 Style Abstract

lib/lyx2lyx/lyx_2_4.py

@@ -4369,6 +4369,33 @@ def convert_vcolumns2(document):
                                  r'\usepackage{varwidth}'])
 
 
+frontispiece_def = [
+    r'### Inserted by lyx2lyx (frontispiece layout) ###',
+    r'Style Frontispiece',
+    r'  CopyStyle             Titlehead',
+    r'  LatexName             frontispiece',
+    r'End',
+]
+
+
+def convert_koma_frontispiece(document):
+    """Remove local KOMA frontispiece definition"""
+    if document.textclass[:3] != "scr":
+        return
+
+    if document.del_local_layout(frontispiece_def):
+        document.add_module("ruby")
+
+
+def revert_koma_frontispiece(document):
+    """Add local KOMA frontispiece definition"""
+    if document.textclass[:3] != "scr":
+        return
+
+    if find_token(document.body, "\\begin_layout Frontispiece", 0) != -1:
+        document.append_local_layout(frontispiece_def)
+
+
 ##
 # Conversion hub
 #
@@ -4435,10 +4462,12 @@ convert = [
            [602, [convert_branch_colors]],
            [603, []],
            [604, []],
-           [605, [convert_vcolumns2]]
+           [605, [convert_vcolumns2]],
+           [606, [convert_koma_frontispiece]]
           ]
 
-revert =  [[604, [revert_vcolumns2]],
+revert =  [[605, [revert_koma_frontispiece]],
+           [604, [revert_vcolumns2]],
            [603, [revert_branch_darkcols]],
            [602, [revert_darkmode_graphics]],
            [601, [revert_branch_colors]],

src/version.h

@@ -32,8 +32,8 @@ extern char const * const lyx_version_info;
 
 // Do not remove the comment below, so we get merge conflict in
 // independent branches. Instead add your own.
-#define LYX_FORMAT_LYX 605 // spitz: improved varwidth cells
-#define LYX_FORMAT_TEX2LYX 605
+#define LYX_FORMAT_LYX 606 // spitz: frontispiece KOMA layout
+#define LYX_FORMAT_TEX2LYX 606
 
 #if LYX_FORMAT_TEX2LYX != LYX_FORMAT_LYX
 #ifndef _MSC_VER