gdiplus: Implemented GdipIsInfiniteRegion with tests.

dlls/gdiplus/region.c

@@ -770,11 +770,17 @@ GpStatus WINGDIPAPI GdipIsEqualRegion(GpRegion *region, GpRegion *region2, GpGra
     return NotImplemented;
 }
 
+/* I think graphics is ignored here */
 GpStatus WINGDIPAPI GdipIsInfiniteRegion(GpRegion *region, GpGraphics *graphics, BOOL *res)
 {
-    FIXME("(%p, %p, %p): stub\n", region, graphics, res);
+    TRACE("(%p, %p, %p)\n", region, graphics, res);
 
-    return NotImplemented;
+    if(!region || !graphics || !res)
+        return InvalidParameter;
+
+    *res = (region->node.type == RegionDataInfiniteRect);
+
+    return Ok;
 }
 
 GpStatus WINGDIPAPI GdipSetEmpty(GpRegion *region)

dlls/gdiplus/tests/graphics.c

@@ -770,12 +770,16 @@ static void test_getclip(void)
     GpGraphics *graphics = NULL;
     HDC hdc = GetDC(0);
     GpRegion *clip;
+    GpRectF rect;
     BOOL res;
 
     status = GdipCreateFromHDC(hdc, &graphics);
     expect(Ok, status);
 
-    status = GdipCreateRegion(&clip);
+    rect.X = rect.Y = 0.0;
+    rect.Height = rect.Width = 100.0;
+
+    status = GdipCreateRegionRect(&rect, &clip);
 
     /* NULL arguments */
     status = GdipGetClip(NULL, NULL);
@@ -789,7 +793,7 @@ static void test_getclip(void)
     status = GdipGetClip(graphics, clip);
     todo_wine expect(Ok, status);
     status = GdipIsInfiniteRegion(clip, graphics, &res);
-    todo_wine expect(Ok, status);
+    expect(Ok, status);
     todo_wine expect(TRUE, res);
 
     GdipDeleteRegion(clip);

dlls/gdiplus/tests/region.c

@@ -463,6 +463,52 @@ static void test_getregiondata(void)
     expect(Ok, status);
 }
 
+static void test_isinfinite(void)
+{
+    GpStatus status;
+    GpRegion *region;
+    GpGraphics *graphics = NULL;
+    GpMatrix *m;
+    HDC hdc = GetDC(0);
+    BOOL res;
+
+    status = GdipCreateFromHDC(hdc, &graphics);
+    expect(Ok, status);
+    GdipCreateRegion(&region);
+
+    GdipCreateMatrix2(3.0, 0.0, 0.0, 1.0, 20.0, 30.0, &m);
+
+    /* NULL arguments */
+    status = GdipIsInfiniteRegion(NULL, NULL, NULL);
+    expect(InvalidParameter, status);
+    status = GdipIsInfiniteRegion(region, NULL, NULL);
+    expect(InvalidParameter, status);
+    status = GdipIsInfiniteRegion(NULL, graphics, NULL);
+    expect(InvalidParameter, status);
+    status = GdipIsInfiniteRegion(NULL, NULL, &res);
+    expect(InvalidParameter, status);
+    status = GdipIsInfiniteRegion(region, NULL, &res);
+    expect(InvalidParameter, status);
+
+    res = FALSE;
+    status = GdipIsInfiniteRegion(region, graphics, &res);
+    expect(Ok, status);
+    expect(TRUE, res);
+
+    /* after world transform */
+    status = GdipSetWorldTransform(graphics, m);
+    expect(Ok, status);
+
+    res = FALSE;
+    status = GdipIsInfiniteRegion(region, graphics, &res);
+    expect(Ok, status);
+    expect(TRUE, res);
+
+    GdipDeleteMatrix(m);
+    GdipDeleteRegion(region);
+    ReleaseDC(0, hdc);
+}
+
 START_TEST(region)
 {
     struct GdiplusStartupInput gdiplusStartupInput;
@@ -476,6 +522,7 @@ START_TEST(region)
     GdiplusStartup(&gdiplusToken, &gdiplusStartupInput, NULL);
 
     test_getregiondata();
+    test_isinfinite();
 
     GdiplusShutdown(gdiplusToken);