Sweden-Number/dlls/gdiplus/pathiterator.c

228 lines
5.8 KiB
C

/*
* Copyright (C) 2007 Google (Evan Stade)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <stdarg.h>
#include "windef.h"
#include "winbase.h"
#include "wingdi.h"
#include "objbase.h"
#include "gdiplus.h"
#include "gdiplus_private.h"
GpStatus WINGDIPAPI GdipCreatePathIter(GpPathIterator **iterator, GpPath* path)
{
INT size;
if(!iterator)
return InvalidParameter;
*iterator = GdipAlloc(sizeof(GpPathIterator));
if(!*iterator) return OutOfMemory;
if(path){
size = path->pathdata.Count;
(*iterator)->pathdata.Types = GdipAlloc(size);
(*iterator)->pathdata.Points = GdipAlloc(size * sizeof(PointF));
memcpy((*iterator)->pathdata.Types, path->pathdata.Types, size);
memcpy((*iterator)->pathdata.Points, path->pathdata.Points,size * sizeof(PointF));
(*iterator)->pathdata.Count = size;
}
else{
(*iterator)->pathdata.Types = NULL;
(*iterator)->pathdata.Points = NULL;
(*iterator)->pathdata.Count = 0;
}
(*iterator)->subpath_pos = 0;
(*iterator)->marker_pos = 0;
(*iterator)->pathtype_pos = 0;
return Ok;
}
GpStatus WINGDIPAPI GdipDeletePathIter(GpPathIterator *iter)
{
if(!iter)
return InvalidParameter;
GdipFree(iter->pathdata.Types);
GdipFree(iter->pathdata.Points);
GdipFree(iter);
return Ok;
}
GpStatus WINGDIPAPI GdipPathIterCopyData(GpPathIterator* iterator,
INT* resultCount, GpPointF* points, BYTE* types, INT startIndex, INT endIndex)
{
if(!iterator || !types || !points)
return InvalidParameter;
if(endIndex > iterator->pathdata.Count - 1 || startIndex < 0 ||
endIndex < startIndex){
*resultCount = 0;
return Ok;
}
*resultCount = endIndex - startIndex + 1;
memcpy(types, &(iterator->pathdata.Types[startIndex]), *resultCount);
memcpy(points, &(iterator->pathdata.Points[startIndex]),
*resultCount * sizeof(PointF));
return Ok;
}
GpStatus WINGDIPAPI GdipPathIterHasCurve(GpPathIterator* iterator, BOOL* hasCurve)
{
INT i;
if(!iterator)
return InvalidParameter;
*hasCurve = FALSE;
for(i = 0; i < iterator->pathdata.Count; i++)
if((iterator->pathdata.Types[i] & PathPointTypePathTypeMask) == PathPointTypeBezier){
*hasCurve = TRUE;
break;
}
return Ok;
}
GpStatus WINGDIPAPI GdipPathIterGetSubpathCount(GpPathIterator* iterator, INT* count)
{
INT i;
if(!iterator || !count)
return InvalidParameter;
*count = 0;
for(i = 0; i < iterator->pathdata.Count; i++){
if(iterator->pathdata.Types[i] == PathPointTypeStart)
(*count)++;
}
return Ok;
}
GpStatus WINGDIPAPI GdipPathIterNextMarker(GpPathIterator* iterator, INT *resultCount,
INT* startIndex, INT* endIndex)
{
INT i;
if(!iterator || !startIndex || !endIndex)
return InvalidParameter;
*resultCount = 0;
/* first call could start with second point as all subsequent, cause
path couldn't contain only one */
for(i = iterator->marker_pos + 1; i < iterator->pathdata.Count; i++){
if((iterator->pathdata.Types[i] & PathPointTypePathMarker) ||
(i == iterator->pathdata.Count - 1)){
*startIndex = iterator->marker_pos;
if(iterator->marker_pos > 0) (*startIndex)++;
*endIndex = iterator->marker_pos = i;
*resultCount= *endIndex - *startIndex + 1;
break;
}
}
return Ok;
}
GpStatus WINGDIPAPI GdipPathIterNextSubpath(GpPathIterator* iterator,
INT *resultCount, INT* startIndex, INT* endIndex, BOOL* isClosed)
{
INT i, count;
if(!iterator || !startIndex || !endIndex || !isClosed || !resultCount)
return InvalidParameter;
count = iterator->pathdata.Count;
/* iterator created with NULL path */
if(count == 0)
return Ok;
if(iterator->subpath_pos == count){
*startIndex = *endIndex = *resultCount = 0;
*isClosed = 1;
return Ok;
}
*startIndex = iterator->subpath_pos;
for(i = iterator->subpath_pos + 1; i < count &&
!(iterator->pathdata.Types[i] == PathPointTypeStart); i++);
*endIndex = i - 1;
iterator->subpath_pos = i;
*resultCount = *endIndex - *startIndex + 1;
if(iterator->pathdata.Types[*endIndex] & PathPointTypeCloseSubpath)
*isClosed = TRUE;
else
*isClosed = FALSE;
return Ok;
}
GpStatus WINGDIPAPI GdipPathIterRewind(GpPathIterator *iterator)
{
if(!iterator)
return InvalidParameter;
iterator->subpath_pos = 0;
iterator->marker_pos = 0;
iterator->pathtype_pos = 0;
return Ok;
}
GpStatus WINGDIPAPI GdipPathIterGetCount(GpPathIterator* iterator, INT* count)
{
if(!iterator || !count)
return InvalidParameter;
*count = iterator->pathdata.Count;
return Ok;
}
GpStatus WINGDIPAPI GdipPathIterEnumerate(GpPathIterator* iterator, INT* resultCount,
GpPointF *points, BYTE *types, INT count)
{
if((count < 0) || !resultCount)
return InvalidParameter;
if(count == 0){
*resultCount = 0;
return Ok;
}
return GdipPathIterCopyData(iterator, resultCount, points, types, 0, count-1);
}