gdiplus: Implement GdipResetPageTransform.

dlls/gdiplus/graphics.c

@@ -7536,14 +7536,27 @@ cleanup:
 
 GpStatus WINGDIPAPI GdipResetPageTransform(GpGraphics *graphics)
 {
-    static int calls;
+    GpStatus stat;
 
-    TRACE("(%p) stub\n", graphics);
+    TRACE("(%p)\n", graphics);
 
-    if(!(calls++))
-        FIXME("not implemented\n");
+    if(!graphics)
+        return InvalidParameter;
 
-    return NotImplemented;
+    if(graphics->busy)
+        return ObjectBusy;
+
+    if (is_metafile_graphics(graphics))
+    {
+        stat = METAFILE_SetPageTransform((GpMetafile*)graphics->image, UnitDisplay, 1.0);
+        if (stat != Ok)
+            return stat;
+    }
+
+    graphics->scale = 1.0;
+    graphics->unit = UnitDisplay;
+
+    return Ok;
 }
 
 GpStatus WINGDIPAPI GdipGraphicsSetAbort(GpGraphics *graphics, GdiplusAbort *pabort)

dlls/gdiplus/tests/graphics.c

@@ -1829,7 +1829,6 @@ static void test_Get_Release_DC(void)
     status = GdipResetClip(graphics);
     expect(ObjectBusy, status);
     status = GdipResetPageTransform(graphics);
-    todo_wine
     expect(ObjectBusy, status);
     status = GdipResetWorldTransform(graphics);
     expect(ObjectBusy, status);
@@ -4139,15 +4138,12 @@ static void test_set_page_transform(void)
     expect(Ok, status);
     expectf_(2.0, scale, 0);
     status = GdipResetPageTransform(graphics);
-    todo_wine
     expect(Ok, status);
     status = GdipGetPageUnit(graphics, &unit);
     expect(Ok, status);
-    todo_wine
     expect(UnitDisplay, unit);
     status = GdipGetPageScale(graphics, &scale);
     expect(Ok, status);
-    todo_wine
     expectf_(1.0, scale, 0);
 
     GdipDeleteGraphics(graphics);