[1/4] gdiplus: Implement metafile recording for ScaleWorldTransform.

[Vincent Povirk]

From: Vincent Povirk <vincent at codeweavers.com>

Signed-off-by: Vincent Povirk <vincent at codeweavers.com>
---
 dlls/gdiplus/gdiplus_private.h |  1 +
 dlls/gdiplus/graphics.c        |  9 +++++++++
 dlls/gdiplus/metafile.c        | 31 +++++++++++++++++++++++++++++++
 3 files changed, 41 insertions(+)

diff --git a/dlls/gdiplus/gdiplus_private.h b/dlls/gdiplus/gdiplus_private.h
index 25ae5ee..e4056b4 100644
--- a/dlls/gdiplus/gdiplus_private.h
+++ b/dlls/gdiplus/gdiplus_private.h
@@ -90,6 +90,7 @@ extern GpStatus METAFILE_GraphicsClear(GpMetafile* metafile, ARGB color) DECLSPE
 extern GpStatus METAFILE_FillRectangles(GpMetafile* metafile, GpBrush* brush,
     GDIPCONST GpRectF* rects, INT count) DECLSPEC_HIDDEN;
 extern GpStatus METAFILE_SetPageTransform(GpMetafile* metafile, GpUnit unit, REAL scale) DECLSPEC_HIDDEN;
+extern GpStatus METAFILE_ScaleWorldTransform(GpMetafile* metafile, REAL sx, REAL sy, MatrixOrder order) DECLSPEC_HIDDEN;
 extern GpStatus METAFILE_GraphicsDeleted(GpMetafile* metafile) DECLSPEC_HIDDEN;
 
 extern void calc_curve_bezier(const GpPointF *pts, REAL tension, REAL *x1,
diff --git a/dlls/gdiplus/graphics.c b/dlls/gdiplus/graphics.c
index 37990cf..febb60d 100644
--- a/dlls/gdiplus/graphics.c
+++ b/dlls/gdiplus/graphics.c
@@ -5242,6 +5242,8 @@ GpStatus WINGDIPAPI GdipEndContainer(GpGraphics *graphics, GraphicsContainer sta
 GpStatus WINGDIPAPI GdipScaleWorldTransform(GpGraphics *graphics, REAL sx,
     REAL sy, GpMatrixOrder order)
 {
+    GpStatus stat;
+
     TRACE("(%p, %.2f, %.2f, %d)\n", graphics, sx, sy, order);
 
     if(!graphics)
@@ -5250,6 +5252,13 @@ GpStatus WINGDIPAPI GdipScaleWorldTransform(GpGraphics *graphics, REAL sx,
     if(graphics->busy)
         return ObjectBusy;
 
+    if (graphics->image && graphics->image->type == ImageTypeMetafile) {
+        stat = METAFILE_ScaleWorldTransform((GpMetafile*)graphics->image, sx, sy, order);
+
+        if (stat != Ok)
+            return stat;
+    }
+
     return GdipScaleMatrix(&graphics->worldtrans, sx, sy, order);
 }
 
diff --git a/dlls/gdiplus/metafile.c b/dlls/gdiplus/metafile.c
index 022af38..0f03041 100644
--- a/dlls/gdiplus/metafile.c
+++ b/dlls/gdiplus/metafile.c
@@ -84,6 +84,13 @@ typedef struct EmfPlusRect
     SHORT Height;
 } EmfPlusRect;
 
+typedef struct EmfPlusScaleWorldTransform
+{
+    EmfPlusRecordHeader Header;
+    REAL Sx;
+    REAL Sy;
+} EmfPlusScaleWorldTransform;
+
 static GpStatus METAFILE_AllocateRecord(GpMetafile *metafile, DWORD size, void **result)
 {
     DWORD size_needed;
@@ -555,6 +562,30 @@ GpStatus METAFILE_SetPageTransform(GpMetafile* metafile, GpUnit unit, REAL scale
     return Ok;
 }
 
+GpStatus METAFILE_ScaleWorldTransform(GpMetafile* metafile, REAL sx, REAL sy, MatrixOrder order)
+{
+    if (metafile->metafile_type == MetafileTypeEmfPlusOnly || metafile->metafile_type == MetafileTypeEmfPlusDual)
+    {
+        EmfPlusScaleWorldTransform *record;
+        GpStatus stat;
+
+        stat = METAFILE_AllocateRecord(metafile,
+            sizeof(EmfPlusScaleWorldTransform),
+            (void**)&record);
+        if (stat != Ok)
+            return stat;
+
+        record->Header.Type = EmfPlusRecordTypeScaleWorldTransform;
+        record->Header.Flags = (order == MatrixOrderAppend ? 4 : 0);
+        record->Sx = sx;
+        record->Sy = sy;
+
+        METAFILE_WriteRecords(metafile);
+    }
+
+    return Ok;
+}
+
 GpStatus METAFILE_ReleaseDC(GpMetafile* metafile, HDC hdc)
 {
     if (hdc != metafile->record_dc)
-- 
2.7.4