gdiplus: implemented GdipResetWorldTransform

[Nikolay Sivov]

Changelog:
    - implemented GdipResetWorldTransform

---
 dlls/gdiplus/gdiplus.spec |    2 +-
 dlls/gdiplus/graphics.c   |   15 +++++++++++++++
 include/gdiplusflat.h     |    1 +
 3 files changed, 17 insertions(+), 1 deletions(-)

diff --git a/dlls/gdiplus/gdiplus.spec b/dlls/gdiplus/gdiplus.spec
index 57f9734..726dfb6 100644
--- a/dlls/gdiplus/gdiplus.spec
+++ b/dlls/gdiplus/gdiplus.spec
@@ -482,7 +482,7 @@
 @ stub GdipResetPathGradientTransform
 @ stub GdipResetPenTransform
 @ stub GdipResetTextureTransform
-@ stub GdipResetWorldTransform
+@ stdcall GdipResetWorldTransform(ptr)
 @ stdcall GdipRestoreGraphics(ptr long)
 @ stdcall GdipReversePath(ptr)
 @ stub GdipRotateLineTransform
diff --git a/dlls/gdiplus/graphics.c b/dlls/gdiplus/graphics.c
index 2450b47..3a7ffce 100644
--- a/dlls/gdiplus/graphics.c
+++ b/dlls/gdiplus/graphics.c
@@ -2343,6 +2343,21 @@ GpStatus WINGDIPAPI GdipMeasureString(GpGraphics *graphics,
     return Ok;
 }
 
+GpStatus WINGDIPAPI GdipResetWorldTransform(GpGraphics *graphics)
+{
+    if(!graphics)
+        return InvalidParameter;
+
+    graphics->worldtrans->matrix[0] = 1.0;
+    graphics->worldtrans->matrix[1] = 0.0;
+    graphics->worldtrans->matrix[2] = 0.0;
+    graphics->worldtrans->matrix[3] = 1.0;
+    graphics->worldtrans->matrix[4] = 0.0;
+    graphics->worldtrans->matrix[5] = 0.0;
+
+    return Ok;
+}
+
 GpStatus WINGDIPAPI GdipRestoreGraphics(GpGraphics *graphics, GraphicsState state)
 {
     static int calls;
diff --git a/include/gdiplusflat.h b/include/gdiplusflat.h
index ed88096..65e6663 100644
--- a/include/gdiplusflat.h
+++ b/include/gdiplusflat.h
@@ -166,6 +166,7 @@ GpStatus WINGDIPAPI GdipMeasureCharacterRanges(GpGraphics*, GDIPCONST WCHAR*,
     GpRegion**);
 
 GpStatus WINGDIPAPI GdipReleaseDC(GpGraphics*,HDC);
+GpStatus WINGDIPAPI GdipResetWorldTransform(GpGraphics*);
 GpStatus WINGDIPAPI GdipRestoreGraphics(GpGraphics*,GraphicsState);
 GpStatus WINGDIPAPI GdipRotateWorldTransform(GpGraphics*,REAL,GpMatrixOrder);
 GpStatus WINGDIPAPI GdipSaveGraphics(GpGraphics*,GraphicsState*);
-- 
1.4.4.4