[2/4] gdiplus: basic parameter check in GdipTransformPoints with tests

[Nikolay Sivov]

Changelog:
    - Add a basic parameter check in GdipTransformPoints with tests

---
 dlls/gdiplus/graphics.c       |    6 ++++++
 dlls/gdiplus/tests/graphics.c |   33 +++++++++++++++++++++++++++++++++
 2 files changed, 39 insertions(+), 0 deletions(-)

diff --git a/dlls/gdiplus/graphics.c b/dlls/gdiplus/graphics.c
index ef2aff7..bf3a638 100644
--- a/dlls/gdiplus/graphics.c
+++ b/dlls/gdiplus/graphics.c
@@ -2887,6 +2887,12 @@ GpStatus WINGDIPAPI GdipGetClip(GpGraphics *graphics, GpRegion *region)
 GpStatus WINGDIPAPI GdipTransformPoints(GpGraphics *graphics, GpCoordinateSpace dst_space,
                                         GpCoordinateSpace src_space, GpPointF *points, INT count)
 {
+    if(!graphics || !points || count <= 0)
+        return InvalidParameter;
+
+    if(graphics->busy)
+        return ObjectBusy;
+
     FIXME("(%p, %d, %d, %p, %d): stub\n", graphics, dst_space, src_space, points, count);
 
     return NotImplemented;
diff --git a/dlls/gdiplus/tests/graphics.c b/dlls/gdiplus/tests/graphics.c
index 9770211..10f0e79 100644
--- a/dlls/gdiplus/tests/graphics.c
+++ b/dlls/gdiplus/tests/graphics.c
@@ -714,6 +714,8 @@ static void test_Get_Release_DC(void)
     status = GdipMultiplyWorldTransform(graphics, m, MatrixOrderPrepend);
     status = GdipGetClip(graphics, region);
     expect(ObjectBusy, status); status = Ok;
+    status = GdipTransformPoints(graphics, CoordinateSpacePage, CoordinateSpaceWorld, ptf, 5);
+    expect(ObjectBusy, status); status = Ok;
     /* try to delete before release */
     status = GdipDeleteGraphics(graphics);
     expect(ObjectBusy, status);
@@ -732,6 +734,36 @@ static void test_Get_Release_DC(void)
     ReleaseDC(0, hdc);
 }
 
+static void test_transformpoints(void)
+{
+    GpStatus status;
+    GpGraphics *graphics = NULL;
+    HDC hdc = GetDC(0);
+    GpPointF ptf[5];
+    INT i;
+
+    status = GdipCreateFromHDC(hdc, &graphics);
+    expect(Ok, status);
+
+    for(i = 0; i < 5; i++){
+        ptf[i].X = 200.0 + i * 50.0 * (i % 2);
+        ptf[i].Y = 200.0 + i * 50.0 * !(i % 2);
+    }
+
+    /* NULL arguments */
+    status = GdipTransformPoints(NULL, CoordinateSpacePage, CoordinateSpaceWorld, NULL, 0);
+    expect(InvalidParameter, status);
+    status = GdipTransformPoints(graphics, CoordinateSpacePage, CoordinateSpaceWorld, NULL, 0);
+    expect(InvalidParameter, status);
+    status = GdipTransformPoints(graphics, CoordinateSpacePage, CoordinateSpaceWorld, ptf, 0);
+    expect(InvalidParameter, status);
+    status = GdipTransformPoints(graphics, CoordinateSpacePage, CoordinateSpaceWorld, ptf, -1);
+    expect(InvalidParameter, status);
+
+    GdipDeleteGraphics(graphics);
+    ReleaseDC(0, hdc);
+}
+
 START_TEST(graphics)
 {
     struct GdiplusStartupInput gdiplusStartupInput;
@@ -752,6 +784,7 @@ START_TEST(graphics)
     test_GdipDrawLineI();
     test_GdipDrawLinesI();
     test_Get_Release_DC();
+    test_transformpoints();
 
     GdiplusShutdown(gdiplusToken);
 }
-- 
1.4.4.4