gdiplus: Add GdipSetCustomLineCapStrokeCaps implementation and usage.

dlls/gdiplus/customlinecap.c

@@ -97,6 +97,8 @@ static GpStatus init_custom_linecap(GpCustomLineCap *cap, GpPathData *pathdata,
 
     cap->inset = base_inset;
     cap->basecap = basecap;
+    cap->strokeStartCap = LineCapFlat;
+    cap->strokeEndCap = LineCapFlat;
     cap->join = LineJoinMiter;
     cap->scale = 1.0;
 
@@ -177,19 +179,17 @@ GpStatus WINGDIPAPI GdipGetCustomLineCapWidthScale(GpCustomLineCap* custom,
 }
 
 GpStatus WINGDIPAPI GdipSetCustomLineCapStrokeCaps(GpCustomLineCap* custom,
-    GpLineCap start, GpLineCap end)
+    GpLineCap startcap, GpLineCap endcap)
 {
-    static int calls;
+    TRACE("(%p,%u,%u)\n", custom, startcap, endcap);
 
-    TRACE("(%p,%u,%u)\n", custom, start, end);
-
-    if(!custom)
+    if(!custom || startcap > LineCapTriangle || endcap > LineCapTriangle)
         return InvalidParameter;
 
-    if(!(calls++))
-        FIXME("not implemented\n");
+    custom->strokeStartCap = startcap;
+    custom->strokeEndCap = endcap;
 
-    return NotImplemented;
+    return Ok;
 }
 
 GpStatus WINGDIPAPI GdipSetCustomLineCapBaseCap(GpCustomLineCap* custom,

dlls/gdiplus/gdiplus_private.h

@@ -353,6 +353,8 @@ struct GpCustomLineCap{
     BOOL fill;      /* TRUE for fill, FALSE for stroke */
     GpLineCap basecap;  /* cap used together with customLineCap */
     REAL inset;      /* distance between line end and cap beginning */
+    GpLineCap strokeStartCap;
+    GpLineCap strokeEndCap;
     GpLineJoin join; /* joins used for drawing custom cap*/
     REAL scale;
 };

dlls/gdiplus/graphicspath.c

@@ -2145,7 +2145,7 @@ static void add_anchor(const GpPointF *endpoint, const GpPointF *nextpoint,
             if ((custom->pathdata.Types[custom->pathdata.Count - 1] & PathPointTypeCloseSubpath) == PathPointTypeCloseSubpath)
                 widen_closed_figure(tmp_points, 0, custom->pathdata.Count - 1, pen, pen_width, last_point);
             else
-                widen_open_figure(tmp_points, 0, custom->pathdata.Count - 1, pen, pen_width, LineCapFlat, LineCapFlat, last_point);
+                widen_open_figure(tmp_points, 0, custom->pathdata.Count - 1, pen, pen_width, custom->strokeEndCap, custom->strokeStartCap, last_point);
         }
         else
         {

dlls/gdiplus/tests/customlinecap.c

@@ -380,6 +380,33 @@ static void test_captype(void)
     GdipDeleteCustomLineCap((GpCustomLineCap*)arrowcap);
 }
 
+static void test_strokecap(void)
+{
+    GpCustomLineCap *cap;
+    GpStatus stat;
+    GpPath *path;
+
+    /* default cap */
+    stat = GdipCreatePath(FillModeAlternate, &path);
+    ok(stat == Ok, "Failed to create path, %d\n", stat);
+    stat = GdipAddPathRectangle(path, 5.0, 5.0, 10.0, 10.0);
+    ok(stat == Ok, "AddPathRectangle failed, %d\n", stat);
+
+    stat = GdipCreateCustomLineCap(NULL, path, LineCapFlat, 0.0, &cap);
+    ok(stat == Ok, "Failed to create cap, %d\n", stat);
+
+    stat = GdipSetCustomLineCapStrokeCaps((GpCustomLineCap*)cap, LineCapSquare, LineCapFlat);
+    ok(stat == Ok, "Unexpected return code, %d\n", stat);
+
+    stat = GdipSetCustomLineCapStrokeCaps((GpCustomLineCap*)cap, LineCapSquareAnchor, LineCapFlat);
+    ok(stat == InvalidParameter, "Unexpected return code, %d\n", stat);
+
+    stat = GdipSetCustomLineCapStrokeCaps((GpCustomLineCap*)cap, LineCapFlat, LineCapSquareAnchor);
+    ok(stat == InvalidParameter, "Unexpected return code, %d\n", stat);
+    GdipDeleteCustomLineCap(cap);
+    GdipDeletePath(path);
+}
+
 START_TEST(customlinecap)
 {
     struct GdiplusStartupInput gdiplusStartupInput;
@@ -405,6 +432,7 @@ START_TEST(customlinecap)
     test_scale();
     test_create_adjustable_cap();
     test_captype();
+    test_strokecap();
 
     GdiplusShutdown(gdiplusToken);
 }