Nikolay Sivov : gdi32/emf: Fix miter limit serialization.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 5b471a2963f52b5550e045ae0066bf4d393d7a56
URL:    https://gitlab.winehq.org/wine/wine/-/commit/5b471a2963f52b5550e045ae0066bf4...

Author: Nikolay Sivov 
Date:   Sat Oct  7 17:53:00 2023 +0200

gdi32/emf: Fix miter limit serialization.

---

dlls/gdi32/dc.c          |  2 +-
 dlls/gdi32/emfdc.c       | 10 ++++++++++
 dlls/gdi32/enhmetafile.c |  2 +-
 dlls/gdi32/gdi_private.h | 10 ++++++++++
 4 files changed, 22 insertions(+), 2 deletions(-)

diff --git a/dlls/gdi32/dc.c b/dlls/gdi32/dc.c
index e1f6703f81e..27211a2b1d2 100644
--- a/dlls/gdi32/dc.c
+++ b/dlls/gdi32/dc.c
@@ -1371,7 +1371,7 @@ BOOL WINAPI SetMiterLimit( HDC hdc, FLOAT limit, FLOAT *old_limit )
 {
     DC_ATTR *dc_attr;
     if (!(dc_attr = get_dc_attr( hdc ))) return FALSE;
-    /* FIXME: record EMFs */
+    if (dc_attr->emf && !EMFDC_SetMiterLimit( dc_attr, limit )) return 0;
     if (old_limit) *old_limit = dc_attr->miter_limit;
     dc_attr->miter_limit = limit;
     return TRUE;
diff --git a/dlls/gdi32/emfdc.c b/dlls/gdi32/emfdc.c
index 645592fea0a..35910b388c3 100644
--- a/dlls/gdi32/emfdc.c
+++ b/dlls/gdi32/emfdc.c
@@ -2254,6 +2254,16 @@ BOOL EMFDC_SetMapMode( DC_ATTR *dc_attr, INT mode )
     return emfdc_record( get_dc_emf( dc_attr ), &emr.emr );
 }

+BOOL EMFDC_SetMiterLimit( DC_ATTR *dc_attr, FLOAT limit )
+{
+    struct emr_set_miter_limit emr;
+
+    emr.emr.iType = EMR_SETMITERLIMIT;
+    emr.emr.nSize = sizeof(emr);
+    emr.eMiterLimit = limit;
+    return emfdc_record( get_dc_emf( dc_attr ), &emr.emr );
+}
+
 BOOL EMFDC_SetViewportExtEx( DC_ATTR *dc_attr, INT cx, INT cy )
 {
     EMRSETVIEWPORTEXTEX emr;
diff --git a/dlls/gdi32/enhmetafile.c b/dlls/gdi32/enhmetafile.c
index 12449ecfdf0..0351d8c462d 100644
--- a/dlls/gdi32/enhmetafile.c
+++ b/dlls/gdi32/enhmetafile.c
@@ -1680,7 +1680,7 @@ BOOL WINAPI PlayEnhMetaFileRecord(

case EMR_SETMITERLIMIT:
       {
-        const EMRSETMITERLIMIT *lpSetMiterLimit = (const EMRSETMITERLIMIT *)mr;
+        const struct emr_set_miter_limit *lpSetMiterLimit = (const struct emr_set_miter_limit *)mr;
         SetMiterLimit( hdc, lpSetMiterLimit->eMiterLimit, NULL );
         break;
       }
diff --git a/dlls/gdi32/gdi_private.h b/dlls/gdi32/gdi_private.h
index f717181b252..a98c0f29917 100644
--- a/dlls/gdi32/gdi_private.h
+++ b/dlls/gdi32/gdi_private.h
@@ -160,6 +160,15 @@ typedef struct
     INT   nBreakCount;
 } EMRSETTEXTJUSTIFICATION, *PEMRSETTEXTJUSTIFICATION;

+/* Public structure EMRSETMITERLIMIT is using a float field,
+   that does not match serialized output or documentation,
+   which are both using unsigned integer. */
+struct emr_set_miter_limit
+{
+    EMR   emr;
+    DWORD eMiterLimit;
+};
+
 BOOL EMFDC_AbortPath( DC_ATTR *dc_attr );
 BOOL EMFDC_AlphaBlend( DC_ATTR *dc_attr, INT x_dst, INT y_dst, INT width_dst, INT height_dst,
                        HDC hdc_src, INT x_src, INT y_src, INT width_src, INT height_src,
@@ -232,6 +241,7 @@ INT  EMFDC_SetDIBitsToDevice( DC_ATTR *dc_attr, INT x_dest, INT y_dest, DWORD wi
 BOOL EMFDC_SetLayout( DC_ATTR *dc_attr, DWORD layout );
 BOOL EMFDC_SetMapMode( DC_ATTR *dc_attr, INT mode );
 BOOL EMFDC_SetMapperFlags( DC_ATTR *dc_attr, DWORD flags );
+BOOL EMFDC_SetMiterLimit( DC_ATTR *dc_attr, FLOAT limit );
 BOOL EMFDC_SetPixel( DC_ATTR *dc_attr, INT x, INT y, COLORREF color );
 BOOL EMFDC_SetPolyFillMode( DC_ATTR *dc_attr, INT mode );
 BOOL EMFDC_SetROP2( DC_ATTR *dc_attr, INT rop );