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gdi32: Add a helper function to reverse an array of points in paths. 

Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Alexandre Julliard 2016-06-24 13:21:47 +09:00
parent cac226200d
commit 57d2009035
1 changed files with 18 additions and 12 deletions
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30
dlls/gdi32/path.c
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@ -276,6 +276,18 @@ static BYTE *add_points( struct gdi_path *path, const POINT *points, DWORD count
return ret;
}
/* reverse the order of an array of points */
static void reverse_points( POINT *points, UINT count )
{
UINT i;
for (i = 0; i < count / 2; i++)
{
POINT pt = points[i];
points[i] = points[count - i - 1];
points[count - i - 1] = pt;
}
}
/* start a new path stroke if necessary */
static BOOL start_new_stroke( struct path_physdev *physdev )
{
@ -1570,6 +1582,7 @@ static struct gdi_path *PATH_WidenPath(DC *dc)
INT i, j, numStrokes, penWidth, penWidthIn, penWidthOut, size, penStyle;
struct gdi_path *flat_path, *pNewPath, **pStrokes = NULL, *pUpPath, *pDownPath;
EXTLOGPEN *elp;
BYTE *type;
DWORD obj_type, joint, endcap, penType;
size = GetObjectW( dc->hPen, 0, NULL );
@ -1828,18 +1841,11 @@ static struct gdi_path *PATH_WidenPath(DC *dc)
}
}
}
for(j = 0; j < pUpPath->count; j++) {
POINT pt;
pt.x = pUpPath->points[j].x;
pt.y = pUpPath->points[j].y;
PATH_AddEntry(pNewPath, &pt, (j == 0 ? PT_MOVETO : PT_LINETO));
}
for(j = 0; j < pDownPath->count; j++) {
POINT pt;
pt.x = pDownPath->points[pDownPath->count - j - 1].x;
pt.y = pDownPath->points[pDownPath->count - j - 1].y;
PATH_AddEntry(pNewPath, &pt, ( (j == 0 && (pStrokes[i]->flags[pStrokes[i]->count - 1] & PT_CLOSEFIGURE)) ? PT_MOVETO : PT_LINETO));
}
type = add_points( pNewPath, pUpPath->points, pUpPath->count, PT_LINETO );
type[0] = PT_MOVETO;
reverse_points( pDownPath->points, pDownPath->count );
type = add_points( pNewPath, pDownPath->points, pDownPath->count, PT_LINETO );
if (pStrokes[i]->flags[pStrokes[i]->count - 1] & PT_CLOSEFIGURE) type[0] = PT_MOVETO;
free_gdi_path( pStrokes[i] );
free_gdi_path( pUpPath );