dwrite: Implement SetCurrentTransform() for bitmap render target.

dlls/dwrite/gdiinterop.c

@@ -31,6 +31,13 @@
 
 WINE_DEFAULT_DEBUG_CHANNEL(dwrite);
 
+static const DWRITE_MATRIX identity =
+{
+    1.0f, 0.0f,
+    0.0f, 1.0f,
+    0.0f, 0.0f
+};
+
 struct gdiinterop {
     IDWriteGdiInterop IDWriteGdiInterop_iface;
     IDWriteFactory *factory;
@@ -171,8 +178,11 @@ static HRESULT WINAPI rendertarget_GetCurrentTransform(IDWriteBitmapRenderTarget
 static HRESULT WINAPI rendertarget_SetCurrentTransform(IDWriteBitmapRenderTarget *iface, DWRITE_MATRIX const *transform)
 {
     struct rendertarget *This = impl_from_IDWriteBitmapRenderTarget(iface);
-    FIXME("(%p)->(%p): stub\n", This, transform);
-    return E_NOTIMPL;
+
+    TRACE("(%p)->(%p)\n", This, transform);
+
+    This->m = transform ? *transform : identity;
+    return S_OK;
 }
 
 static HRESULT WINAPI rendertarget_GetSize(IDWriteBitmapRenderTarget *iface, SIZE *size)
@@ -233,9 +243,7 @@ static HRESULT create_rendertarget(HDC hdc, UINT32 width, UINT32 height, IDWrite
         return hr;
     }
 
-    target->m.m11 = target->m.m22 = 1.0;
-    target->m.m12 = target->m.m21 = 0.0;
-    target->m.dx  = target->m.dy  = 0.0;
+    target->m = identity;
     target->pixels_per_dip = 1.0;
 
     *ret = &target->IDWriteBitmapRenderTarget_iface;

dlls/dwrite/tests/font.c

@@ -666,6 +666,25 @@ if (0) /* crashes on native */
     ok(m.m11 == 1.0 && m.m22 == 1.0 && m.m12 == 0.0 && m.m21 == 0.0, "got %.1f,%.1f,%.1f,%.1f\n", m.m11, m.m22, m.m12, m.m21);
     ok(m.dx == 0.0 && m.dy == 0.0, "got %.1f,%.1f\n", m.dx, m.dy);
 
+    memset(&m, 0, sizeof(m));
+    hr = IDWriteBitmapRenderTarget_SetCurrentTransform(target, &m);
+    ok(hr == S_OK, "got 0x%08x\n", hr);
+
+    memset(&m, 0xcc, sizeof(m));
+    hr = IDWriteBitmapRenderTarget_GetCurrentTransform(target, &m);
+    ok(hr == S_OK, "got 0x%08x\n", hr);
+    ok(m.m11 == 0.0 && m.m22 == 0.0 && m.m12 == 0.0 && m.m21 == 0.0, "got %.1f,%.1f,%.1f,%.1f\n", m.m11, m.m22, m.m12, m.m21);
+    ok(m.dx == 0.0 && m.dy == 0.0, "got %.1f,%.1f\n", m.dx, m.dy);
+
+    hr = IDWriteBitmapRenderTarget_SetCurrentTransform(target, NULL);
+    ok(hr == S_OK, "got 0x%08x\n", hr);
+
+    memset(&m, 0xcc, sizeof(m));
+    hr = IDWriteBitmapRenderTarget_GetCurrentTransform(target, &m);
+    ok(hr == S_OK, "got 0x%08x\n", hr);
+    ok(m.m11 == 1.0 && m.m22 == 1.0 && m.m12 == 0.0 && m.m21 == 0.0, "got %.1f,%.1f,%.1f,%.1f\n", m.m11, m.m22, m.m12, m.m21);
+    ok(m.dx == 0.0 && m.dy == 0.0, "got %.1f,%.1f\n", m.dx, m.dy);
+
     /* pixels per dip */
     pdip = IDWriteBitmapRenderTarget_GetPixelsPerDip(target);
     ok(pdip == 1.0, "got %.2f\n", pdip);