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gdiplus: Implement LineCapRound in GdipWidenPath.

This commit is contained in:
Vincent Povirk 2012-09-20 16:45:36 -05:00 committed by Alexandre Julliard
parent 8871af7ea5
commit 0b40c9cb41
1 changed files with 45 additions and 2 deletions
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47
dlls/gdiplus/graphicspath.c
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@ -1799,6 +1799,49 @@ static void widen_cap(const GpPointF *endpoint, const GpPointF *nextpoint,
break;
}
case LineCapRound:
{
REAL segment_dy = nextpoint->Y-endpoint->Y;
REAL segment_dx = nextpoint->X-endpoint->X;
REAL segment_length = sqrtf(segment_dy*segment_dy + segment_dx*segment_dx);
REAL distance = pen->width/2.0;
REAL dx, dy, dx2, dy2;
const REAL control_point_distance = 0.5522847498307935; /* 4/3 * (sqrt(2) - 1) */
if (add_first_points)
{
dx = -distance * segment_dx / segment_length;
dy = -distance * segment_dy / segment_length;
dx2 = dx * control_point_distance;
dy2 = dy * control_point_distance;
/* first 90-degree arc */
*last_point = add_path_list_node(*last_point, endpoint->X + dy,
endpoint->Y - dx, PathPointTypeLine);
*last_point = add_path_list_node(*last_point, endpoint->X + dy + dx2,
endpoint->Y - dx + dy2, PathPointTypeBezier);
*last_point = add_path_list_node(*last_point, endpoint->X + dx + dy2,
endpoint->Y + dy - dx2, PathPointTypeBezier);
/* midpoint */
*last_point = add_path_list_node(*last_point, endpoint->X + dx,
endpoint->Y + dy, PathPointTypeBezier);
/* second 90-degree arc */
*last_point = add_path_list_node(*last_point, endpoint->X + dx - dy2,
endpoint->Y + dy + dx2, PathPointTypeBezier);
*last_point = add_path_list_node(*last_point, endpoint->X - dy + dx2,
endpoint->Y + dx + dy2, PathPointTypeBezier);
*last_point = add_path_list_node(*last_point, endpoint->X - dy,
endpoint->Y + dx, PathPointTypeBezier);
}
break;
}
}
}
@ -1905,10 +1948,10 @@ GpStatus WINGDIPAPI GdipWidenPath(GpPath *path, GpPen *pen, GpMatrix *matrix,
{
last_point = points;
if (pen->endcap > LineCapSquare)
if (pen->endcap > LineCapRound)
FIXME("unimplemented end cap %x\n", pen->endcap);
if (pen->startcap > LineCapSquare)
if (pen->startcap > LineCapRound)
FIXME("unimplemented start cap %x\n", pen->startcap);
if (pen->dashcap != DashCapFlat)