diplus: Implemented GdipDrawArcI based on GdipDrawArc.

dlls/gdiplus/gdiplus.spec

@@ -153,7 +153,7 @@
 @ stdcall GdipDisposeImage(ptr)
 @ stdcall GdipDisposeImageAttributes(ptr)
 @ stdcall GdipDrawArc(ptr ptr long long long long long long)
-@ stub GdipDrawArcI
+@ stdcall GdipDrawArcI(ptr ptr long long long long long long)
 @ stdcall GdipDrawBezier(ptr ptr long long long long long long long long)
 @ stdcall GdipDrawBezierI(ptr ptr long long long long long long long long)
 @ stub GdipDrawBeziers

dlls/gdiplus/graphics.c

@@ -929,6 +929,27 @@ GpStatus WINGDIPAPI GdipDrawArc(GpGraphics *graphics, GpPen *pen, REAL x,
     return retval;
 }
 
+GpStatus WINGDIPAPI GdipDrawArcI(GpGraphics *graphics, GpPen *pen, INT x,
+    INT y, INT width, INT height, REAL startAngle, REAL sweepAngle)
+{
+    INT save_state, num_pts;
+    GpPointF points[MAX_ARC_PTS];
+    GpStatus retval;
+
+    if(!graphics || !pen || width <= 0 || height <= 0)
+        return InvalidParameter;
+
+    num_pts = arc2polybezier(points, x, y, width, height, startAngle, sweepAngle);
+
+    save_state = prepare_dc(graphics, pen);
+
+    retval = draw_polybezier(graphics, pen, points, num_pts, TRUE);
+
+    restore_dc(graphics, save_state);
+
+    return retval;
+}
+
 GpStatus WINGDIPAPI GdipDrawBezier(GpGraphics *graphics, GpPen *pen, REAL x1,
     REAL y1, REAL x2, REAL y2, REAL x3, REAL y3, REAL x4, REAL y4)
 {

dlls/gdiplus/tests/graphics.c

@@ -220,6 +220,50 @@ static void test_save_restore(void)
     ReleaseDC(0, hdc);
 }
 
+static void test_GdipDrawArcI(void)
+{
+    GpStatus status;
+    GpGraphics *graphics = NULL;
+    GpPen *pen = NULL;
+    HDC hdc = GetDC(0);
+
+    /* make a graphics object and pen object */
+    status = GdipCreateFromHDC(hdc, &graphics);
+    expect(Ok, status);
+    ok(hdc != NULL, "Expected HDC to be initialized\n");
+
+    status = GdipCreateFromHDC(hdc, &graphics);
+    expect(Ok, status);
+    ok(graphics != NULL, "Expected graphics to be initialized\n");
+
+    status = GdipCreatePen1((ARGB)0xffff00ff, 10.0f, UnitPixel, &pen);
+    expect(Ok, status);
+    ok(pen != NULL, "Expected pen to be initialized\n");
+
+    /* InvalidParameter cases: null graphics, null pen, non-positive width, non-positive height */
+    status = GdipDrawArcI(NULL, NULL, 0, 0, 0, 0, 0, 0);
+    expect(InvalidParameter, status);
+
+    status = GdipDrawArcI(graphics, NULL, 0, 0, 1, 1, 0, 0);
+    expect(InvalidParameter, status);
+
+    status = GdipDrawArcI(NULL, pen, 0, 0, 1, 1, 0, 0);
+    expect(InvalidParameter, status);
+
+    status = GdipDrawArcI(graphics, pen, 0, 0, 1, 0, 0, 0);
+    expect(InvalidParameter, status);
+
+    status = GdipDrawArcI(graphics, pen, 0, 0, 0, 1, 0, 0);
+    expect(InvalidParameter, status);
+
+    /* successful case */
+    status = GdipDrawArcI(graphics, pen, 0, 0, 1, 1, 0, 0);
+    expect(Ok, status);
+
+    GdipDeletePen(pen);
+    ReleaseDC(0, hdc);
+}
+
 static void test_GdipDrawBezierI(void)
 {
     GpStatus status;
@@ -273,6 +317,7 @@ START_TEST(graphics)
     test_constructor_destructor();
     test_save_restore();
     test_GdipDrawBezierI();
+    test_GdipDrawArcI();
 
     GdiplusShutdown(gdiplusToken);
 }