gdiplus: Implement writing SetPageTransform records.

dlls/gdiplus/gdiplus_private.h

@@ -59,6 +59,7 @@ extern GpStatus METAFILE_GetDC(GpMetafile* metafile, HDC *hdc) DECLSPEC_HIDDEN;
 extern GpStatus METAFILE_ReleaseDC(GpMetafile* metafile, HDC hdc) DECLSPEC_HIDDEN;
 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_GraphicsDeleted(GpMetafile* metafile) DECLSPEC_HIDDEN;
 extern MetafileType METAFILE_GetEmfType(HENHMETAFILE hemf) DECLSPEC_HIDDEN;
 

dlls/gdiplus/graphics.c

@@ -5274,6 +5274,8 @@ GpStatus WINGDIPAPI GdipSetInterpolationMode(GpGraphics *graphics,
 
 GpStatus WINGDIPAPI GdipSetPageScale(GpGraphics *graphics, REAL scale)
 {
+    GpStatus stat;
+
     TRACE("(%p, %.2f)\n", graphics, scale);
 
     if(!graphics || (scale <= 0.0))
@@ -5282,6 +5284,13 @@ GpStatus WINGDIPAPI GdipSetPageScale(GpGraphics *graphics, REAL scale)
     if(graphics->busy)
         return ObjectBusy;
 
+    if (graphics->image && graphics->image->type == ImageTypeMetafile)
+    {
+        stat = METAFILE_SetPageTransform((GpMetafile*)graphics->image, graphics->unit, scale);
+        if (stat != Ok)
+            return stat;
+    }
+
     graphics->scale = scale;
 
     return Ok;
@@ -5289,6 +5298,8 @@ GpStatus WINGDIPAPI GdipSetPageScale(GpGraphics *graphics, REAL scale)
 
 GpStatus WINGDIPAPI GdipSetPageUnit(GpGraphics *graphics, GpUnit unit)
 {
+    GpStatus stat;
+
     TRACE("(%p, %d)\n", graphics, unit);
 
     if(!graphics)
@@ -5300,6 +5311,13 @@ GpStatus WINGDIPAPI GdipSetPageUnit(GpGraphics *graphics, GpUnit unit)
     if(unit == UnitWorld)
         return InvalidParameter;
 
+    if (graphics->image && graphics->image->type == ImageTypeMetafile)
+    {
+        stat = METAFILE_SetPageTransform((GpMetafile*)graphics->image, unit, graphics->scale);
+        if (stat != Ok)
+            return stat;
+    }
+
     graphics->unit = unit;
 
     return Ok;

dlls/gdiplus/metafile.c

@@ -64,6 +64,12 @@ typedef struct EmfPlusFillRects
     DWORD Count;
 } EmfPlusFillRects;
 
+typedef struct EmfPlusSetPageTransform
+{
+    EmfPlusRecordHeader Header;
+    REAL PageScale;
+} EmfPlusSetPageTransform;
+
 typedef struct EmfPlusRect
 {
     SHORT X;
@@ -416,6 +422,29 @@ GpStatus METAFILE_FillRectangles(GpMetafile* metafile, GpBrush* brush,
     return Ok;
 }
 
+GpStatus METAFILE_SetPageTransform(GpMetafile* metafile, GpUnit unit, REAL scale)
+{
+    if (metafile->metafile_type == MetafileTypeEmfPlusOnly || metafile->metafile_type == MetafileTypeEmfPlusDual)
+    {
+        EmfPlusSetPageTransform *record;
+        GpStatus stat;
+
+        stat = METAFILE_AllocateRecord(metafile,
+            sizeof(EmfPlusSetPageTransform),
+            (void**)&record);
+        if (stat != Ok)
+            return stat;
+
+        record->Header.Type = EmfPlusRecordTypeSetPageTransform;
+        record->Header.Flags = unit;
+        record->PageScale = scale;
+
+        METAFILE_WriteRecords(metafile);
+    }
+
+    return Ok;
+}
+
 GpStatus METAFILE_ReleaseDC(GpMetafile* metafile, HDC hdc)
 {
     if (hdc != metafile->record_dc)