wine/dlls/gdiplus/graphicspath.c
2009-08-03 15:04:10 +02:00

1654 lines
42 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 <math.h>
#include "windef.h"
#include "winbase.h"
#include "winuser.h"
#include "wingdi.h"
#include "objbase.h"
#include "gdiplus.h"
#include "gdiplus_private.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(gdiplus);
typedef struct path_list_node_t path_list_node_t;
struct path_list_node_t {
GpPointF pt;
BYTE type; /* PathPointTypeStart or PathPointTypeLine */
path_list_node_t *next;
};
/* init list */
static BOOL init_path_list(path_list_node_t **node, REAL x, REAL y)
{
*node = GdipAlloc(sizeof(path_list_node_t));
if(!*node)
return FALSE;
(*node)->pt.X = x;
(*node)->pt.Y = y;
(*node)->type = PathPointTypeStart;
(*node)->next = NULL;
return TRUE;
}
/* free all nodes including argument */
static void free_path_list(path_list_node_t *node)
{
path_list_node_t *n = node;
while(n){
n = n->next;
GdipFree(node);
node = n;
}
}
/* Add a node after 'node' */
/*
* Returns
* pointer on success
* NULL on allocation problems
*/
static path_list_node_t* add_path_list_node(path_list_node_t *node, REAL x, REAL y, BOOL type)
{
path_list_node_t *new;
new = GdipAlloc(sizeof(path_list_node_t));
if(!new)
return NULL;
new->pt.X = x;
new->pt.Y = y;
new->type = type;
new->next = node->next;
node->next = new;
return new;
}
/* returns element count */
static INT path_list_count(path_list_node_t *node)
{
INT count = 1;
while((node = node->next))
++count;
return count;
}
/* GdipFlattenPath helper */
/*
* Used to recursively flatten single Bezier curve
* Parameters:
* - start : pointer to start point node;
* - (x2, y2): first control point;
* - (x3, y3): second control point;
* - end : pointer to end point node
* - flatness: admissible error of linear approximation.
*
* Return value:
* TRUE : success
* FALSE: out of memory
*
* TODO: used quality criteria should be revised to match native as
* closer as possible.
*/
static BOOL flatten_bezier(path_list_node_t *start, REAL x2, REAL y2, REAL x3, REAL y3,
path_list_node_t *end, REAL flatness)
{
/* this 5 middle points with start/end define to half-curves */
GpPointF mp[5];
GpPointF pt, pt_st;
path_list_node_t *node;
/* calculate bezier curve middle points == new control points */
mp[0].X = (start->pt.X + x2) / 2.0;
mp[0].Y = (start->pt.Y + y2) / 2.0;
/* middle point between control points */
pt.X = (x2 + x3) / 2.0;
pt.Y = (y2 + y3) / 2.0;
mp[1].X = (mp[0].X + pt.X) / 2.0;
mp[1].Y = (mp[0].Y + pt.Y) / 2.0;
mp[4].X = (end->pt.X + x3) / 2.0;
mp[4].Y = (end->pt.Y + y3) / 2.0;
mp[3].X = (mp[4].X + pt.X) / 2.0;
mp[3].Y = (mp[4].Y + pt.Y) / 2.0;
mp[2].X = (mp[1].X + mp[3].X) / 2.0;
mp[2].Y = (mp[1].Y + mp[3].Y) / 2.0;
pt = end->pt;
pt_st = start->pt;
/* check flatness as a half of distance between middle point and a linearized path */
if(fabs(((pt.Y - pt_st.Y)*mp[2].X + (pt_st.X - pt.X)*mp[2].Y +
(pt_st.Y*pt.X - pt_st.X*pt.Y))) <=
(0.5 * flatness*sqrtf((powf(pt.Y - pt_st.Y, 2.0) + powf(pt_st.X - pt.X, 2.0))))){
return TRUE;
}
else
/* add a middle point */
if(!(node = add_path_list_node(start, mp[2].X, mp[2].Y, PathPointTypeLine)))
return FALSE;
/* do the same with halfs */
flatten_bezier(start, mp[0].X, mp[0].Y, mp[1].X, mp[1].Y, node, flatness);
flatten_bezier(node, mp[3].X, mp[3].Y, mp[4].X, mp[4].Y, end, flatness);
return TRUE;
}
GpStatus WINGDIPAPI GdipAddPathArc(GpPath *path, REAL x1, REAL y1, REAL x2,
REAL y2, REAL startAngle, REAL sweepAngle)
{
INT count, old_count, i;
TRACE("(%p, %.2f, %.2f, %.2f, %.2f, %.2f, %.2f)\n",
path, x1, y1, x2, y2, startAngle, sweepAngle);
if(!path)
return InvalidParameter;
count = arc2polybezier(NULL, x1, y1, x2, y2, startAngle, sweepAngle);
if(count == 0)
return Ok;
if(!lengthen_path(path, count))
return OutOfMemory;
old_count = path->pathdata.Count;
arc2polybezier(&path->pathdata.Points[old_count], x1, y1, x2, y2,
startAngle, sweepAngle);
for(i = 0; i < count; i++){
path->pathdata.Types[old_count + i] = PathPointTypeBezier;
}
path->pathdata.Types[old_count] =
(path->newfigure ? PathPointTypeStart : PathPointTypeLine);
path->newfigure = FALSE;
path->pathdata.Count += count;
return Ok;
}
GpStatus WINGDIPAPI GdipAddPathArcI(GpPath *path, INT x1, INT y1, INT x2,
INT y2, REAL startAngle, REAL sweepAngle)
{
TRACE("(%p, %d, %d, %d, %d, %.2f, %.2f)\n",
path, x1, y1, x2, y2, startAngle, sweepAngle);
return GdipAddPathArc(path,(REAL)x1,(REAL)y1,(REAL)x2,(REAL)y2,startAngle,sweepAngle);
}
GpStatus WINGDIPAPI GdipAddPathBezier(GpPath *path, REAL x1, REAL y1, REAL x2,
REAL y2, REAL x3, REAL y3, REAL x4, REAL y4)
{
INT old_count;
TRACE("(%p, %.2f, %.2f, %.2f, %.2f, %.2f, %.2f, %.2f, %.2f)\n",
path, x1, y1, x2, y2, x3, y3, x4, y4);
if(!path)
return InvalidParameter;
if(!lengthen_path(path, 4))
return OutOfMemory;
old_count = path->pathdata.Count;
path->pathdata.Points[old_count].X = x1;
path->pathdata.Points[old_count].Y = y1;
path->pathdata.Points[old_count + 1].X = x2;
path->pathdata.Points[old_count + 1].Y = y2;
path->pathdata.Points[old_count + 2].X = x3;
path->pathdata.Points[old_count + 2].Y = y3;
path->pathdata.Points[old_count + 3].X = x4;
path->pathdata.Points[old_count + 3].Y = y4;
path->pathdata.Types[old_count] =
(path->newfigure ? PathPointTypeStart : PathPointTypeLine);
path->pathdata.Types[old_count + 1] = PathPointTypeBezier;
path->pathdata.Types[old_count + 2] = PathPointTypeBezier;
path->pathdata.Types[old_count + 3] = PathPointTypeBezier;
path->newfigure = FALSE;
path->pathdata.Count += 4;
return Ok;
}
GpStatus WINGDIPAPI GdipAddPathBezierI(GpPath *path, INT x1, INT y1, INT x2,
INT y2, INT x3, INT y3, INT x4, INT y4)
{
TRACE("(%p, %d, %d, %d, %d, %d, %d, %d, %d)\n",
path, x1, y1, x2, y2, x3, y3, x4, y4);
return GdipAddPathBezier(path,(REAL)x1,(REAL)y1,(REAL)x2,(REAL)y2,(REAL)x3,(REAL)y3,
(REAL)x4,(REAL)y4);
}
GpStatus WINGDIPAPI GdipAddPathBeziers(GpPath *path, GDIPCONST GpPointF *points,
INT count)
{
INT i, old_count;
TRACE("(%p, %p, %d)\n", path, points, count);
if(!path || !points || ((count - 1) % 3))
return InvalidParameter;
if(!lengthen_path(path, count))
return OutOfMemory;
old_count = path->pathdata.Count;
for(i = 0; i < count; i++){
path->pathdata.Points[old_count + i].X = points[i].X;
path->pathdata.Points[old_count + i].Y = points[i].Y;
path->pathdata.Types[old_count + i] = PathPointTypeBezier;
}
path->pathdata.Types[old_count] =
(path->newfigure ? PathPointTypeStart : PathPointTypeLine);
path->newfigure = FALSE;
path->pathdata.Count += count;
return Ok;
}
GpStatus WINGDIPAPI GdipAddPathBeziersI(GpPath *path, GDIPCONST GpPoint *points,
INT count)
{
GpPointF *ptsF;
GpStatus ret;
INT i;
TRACE("(%p, %p, %d)\n", path, points, count);
if(!points || ((count - 1) % 3))
return InvalidParameter;
ptsF = GdipAlloc(sizeof(GpPointF) * count);
if(!ptsF)
return OutOfMemory;
for(i = 0; i < count; i++){
ptsF[i].X = (REAL)points[i].X;
ptsF[i].Y = (REAL)points[i].Y;
}
ret = GdipAddPathBeziers(path, ptsF, count);
GdipFree(ptsF);
return ret;
}
GpStatus WINGDIPAPI GdipAddPathClosedCurve(GpPath *path, GDIPCONST GpPointF *points,
INT count)
{
TRACE("(%p, %p, %d)\n", path, points, count);
return GdipAddPathClosedCurve2(path, points, count, 1.0);
}
GpStatus WINGDIPAPI GdipAddPathClosedCurveI(GpPath *path, GDIPCONST GpPoint *points,
INT count)
{
TRACE("(%p, %p, %d)\n", path, points, count);
return GdipAddPathClosedCurve2I(path, points, count, 1.0);
}
GpStatus WINGDIPAPI GdipAddPathClosedCurve2(GpPath *path, GDIPCONST GpPointF *points,
INT count, REAL tension)
{
INT i, len_pt = (count + 1)*3-2;
GpPointF *pt;
GpPointF *pts;
REAL x1, x2, y1, y2;
GpStatus stat;
TRACE("(%p, %p, %d, %.2f)\n", path, points, count, tension);
if(!path || !points || count <= 1)
return InvalidParameter;
pt = GdipAlloc(len_pt * sizeof(GpPointF));
pts = GdipAlloc((count + 1)*sizeof(GpPointF));
if(!pt || !pts){
GdipFree(pt);
GdipFree(pts);
return OutOfMemory;
}
/* copy source points to extend with the last one */
memcpy(pts, points, sizeof(GpPointF)*count);
pts[count] = pts[0];
tension = tension * TENSION_CONST;
for(i = 0; i < count-1; i++){
calc_curve_bezier(&(pts[i]), tension, &x1, &y1, &x2, &y2);
pt[3*i+2].X = x1;
pt[3*i+2].Y = y1;
pt[3*i+3].X = pts[i+1].X;
pt[3*i+3].Y = pts[i+1].Y;
pt[3*i+4].X = x2;
pt[3*i+4].Y = y2;
}
/* points [len_pt-2] and [0] are calculated
separetely to connect splines properly */
pts[0] = points[count-1];
pts[1] = points[0]; /* equals to start and end of a resulting path */
pts[2] = points[1];
calc_curve_bezier(pts, tension, &x1, &y1, &x2, &y2);
pt[len_pt-2].X = x1;
pt[len_pt-2].Y = y1;
pt[0].X = pts[1].X;
pt[0].Y = pts[1].Y;
pt[1].X = x2;
pt[1].Y = y2;
/* close path */
pt[len_pt-1].X = pt[0].X;
pt[len_pt-1].Y = pt[0].Y;
stat = GdipAddPathBeziers(path, pt, len_pt);
/* close figure */
if(stat == Ok){
INT count = path->pathdata.Count;
path->pathdata.Types[count - 1] |= PathPointTypeCloseSubpath;
path->newfigure = TRUE;
}
GdipFree(pts);
GdipFree(pt);
return stat;
}
GpStatus WINGDIPAPI GdipAddPathClosedCurve2I(GpPath *path, GDIPCONST GpPoint *points,
INT count, REAL tension)
{
GpPointF *ptf;
INT i;
GpStatus stat;
TRACE("(%p, %p, %d, %.2f)\n", path, points, count, tension);
if(!path || !points || count <= 1)
return InvalidParameter;
ptf = GdipAlloc(sizeof(GpPointF)*count);
if(!ptf)
return OutOfMemory;
for(i = 0; i < count; i++){
ptf[i].X = (REAL)points[i].X;
ptf[i].Y = (REAL)points[i].Y;
}
stat = GdipAddPathClosedCurve2(path, ptf, count, tension);
GdipFree(ptf);
return stat;
}
GpStatus WINGDIPAPI GdipAddPathCurve(GpPath *path, GDIPCONST GpPointF *points, INT count)
{
TRACE("(%p, %p, %d)\n", path, points, count);
if(!path || !points || count <= 1)
return InvalidParameter;
return GdipAddPathCurve2(path, points, count, 1.0);
}
GpStatus WINGDIPAPI GdipAddPathCurveI(GpPath *path, GDIPCONST GpPoint *points, INT count)
{
TRACE("(%p, %p, %d)\n", path, points, count);
if(!path || !points || count <= 1)
return InvalidParameter;
return GdipAddPathCurve2I(path, points, count, 1.0);
}
GpStatus WINGDIPAPI GdipAddPathCurve2(GpPath *path, GDIPCONST GpPointF *points, INT count,
REAL tension)
{
INT i, len_pt = count*3-2;
GpPointF *pt;
REAL x1, x2, y1, y2;
GpStatus stat;
TRACE("(%p, %p, %d, %.2f)\n", path, points, count, tension);
if(!path || !points || count <= 1)
return InvalidParameter;
pt = GdipAlloc(len_pt * sizeof(GpPointF));
if(!pt)
return OutOfMemory;
tension = tension * TENSION_CONST;
calc_curve_bezier_endp(points[0].X, points[0].Y, points[1].X, points[1].Y,
tension, &x1, &y1);
pt[0].X = points[0].X;
pt[0].Y = points[0].Y;
pt[1].X = x1;
pt[1].Y = y1;
for(i = 0; i < count-2; i++){
calc_curve_bezier(&(points[i]), tension, &x1, &y1, &x2, &y2);
pt[3*i+2].X = x1;
pt[3*i+2].Y = y1;
pt[3*i+3].X = points[i+1].X;
pt[3*i+3].Y = points[i+1].Y;
pt[3*i+4].X = x2;
pt[3*i+4].Y = y2;
}
calc_curve_bezier_endp(points[count-1].X, points[count-1].Y,
points[count-2].X, points[count-2].Y, tension, &x1, &y1);
pt[len_pt-2].X = x1;
pt[len_pt-2].Y = y1;
pt[len_pt-1].X = points[count-1].X;
pt[len_pt-1].Y = points[count-1].Y;
stat = GdipAddPathBeziers(path, pt, len_pt);
GdipFree(pt);
return stat;
}
GpStatus WINGDIPAPI GdipAddPathCurve2I(GpPath *path, GDIPCONST GpPoint *points,
INT count, REAL tension)
{
GpPointF *ptf;
INT i;
GpStatus stat;
TRACE("(%p, %p, %d, %.2f)\n", path, points, count, tension);
if(!path || !points || count <= 1)
return InvalidParameter;
ptf = GdipAlloc(sizeof(GpPointF)*count);
if(!ptf)
return OutOfMemory;
for(i = 0; i < count; i++){
ptf[i].X = (REAL)points[i].X;
ptf[i].Y = (REAL)points[i].Y;
}
stat = GdipAddPathCurve2(path, ptf, count, tension);
GdipFree(ptf);
return stat;
}
GpStatus WINGDIPAPI GdipAddPathCurve3(GpPath *path, GDIPCONST GpPointF *points,
INT count, INT offset, INT nseg, REAL tension)
{
TRACE("(%p, %p, %d, %d, %d, %.2f)\n", path, points, count, offset, nseg, tension);
if(!path || !points || offset + 1 >= count || count - offset < nseg + 1)
return InvalidParameter;
return GdipAddPathCurve2(path, &points[offset], nseg + 1, tension);
}
GpStatus WINGDIPAPI GdipAddPathCurve3I(GpPath *path, GDIPCONST GpPoint *points,
INT count, INT offset, INT nseg, REAL tension)
{
TRACE("(%p, %p, %d, %d, %d, %.2f)\n", path, points, count, offset, nseg, tension);
if(!path || !points || offset + 1 >= count || count - offset < nseg + 1)
return InvalidParameter;
return GdipAddPathCurve2I(path, &points[offset], nseg + 1, tension);
}
GpStatus WINGDIPAPI GdipAddPathEllipse(GpPath *path, REAL x, REAL y, REAL width,
REAL height)
{
INT old_count, numpts;
TRACE("(%p, %.2f, %.2f, %.2f, %.2f)\n", path, x, y, width, height);
if(!path)
return InvalidParameter;
if(!lengthen_path(path, MAX_ARC_PTS))
return OutOfMemory;
old_count = path->pathdata.Count;
if((numpts = arc2polybezier(&path->pathdata.Points[old_count], x, y, width,
height, 0.0, 360.0)) != MAX_ARC_PTS){
ERR("expected %d points but got %d\n", MAX_ARC_PTS, numpts);
return GenericError;
}
memset(&path->pathdata.Types[old_count + 1], PathPointTypeBezier,
MAX_ARC_PTS - 1);
/* An ellipse is an intrinsic figure (always is its own subpath). */
path->pathdata.Types[old_count] = PathPointTypeStart;
path->pathdata.Types[old_count + MAX_ARC_PTS - 1] |= PathPointTypeCloseSubpath;
path->newfigure = TRUE;
path->pathdata.Count += MAX_ARC_PTS;
return Ok;
}
GpStatus WINGDIPAPI GdipAddPathEllipseI(GpPath *path, INT x, INT y, INT width,
INT height)
{
TRACE("(%p, %d, %d, %d, %d)\n", path, x, y, width, height);
return GdipAddPathEllipse(path,(REAL)x,(REAL)y,(REAL)width,(REAL)height);
}
GpStatus WINGDIPAPI GdipAddPathLine2(GpPath *path, GDIPCONST GpPointF *points,
INT count)
{
INT i, old_count;
TRACE("(%p, %p, %d)\n", path, points, count);
if(!path || !points)
return InvalidParameter;
if(!lengthen_path(path, count))
return OutOfMemory;
old_count = path->pathdata.Count;
for(i = 0; i < count; i++){
path->pathdata.Points[old_count + i].X = points[i].X;
path->pathdata.Points[old_count + i].Y = points[i].Y;
path->pathdata.Types[old_count + i] = PathPointTypeLine;
}
if(path->newfigure){
path->pathdata.Types[old_count] = PathPointTypeStart;
path->newfigure = FALSE;
}
path->pathdata.Count += count;
return Ok;
}
GpStatus WINGDIPAPI GdipAddPathLine2I(GpPath *path, GDIPCONST GpPoint *points, INT count)
{
GpPointF *pointsF;
INT i;
GpStatus stat;
TRACE("(%p, %p, %d)\n", path, points, count);
if(count <= 0)
return InvalidParameter;
pointsF = GdipAlloc(sizeof(GpPointF) * count);
if(!pointsF) return OutOfMemory;
for(i = 0;i < count; i++){
pointsF[i].X = (REAL)points[i].X;
pointsF[i].Y = (REAL)points[i].Y;
}
stat = GdipAddPathLine2(path, pointsF, count);
GdipFree(pointsF);
return stat;
}
GpStatus WINGDIPAPI GdipAddPathLine(GpPath *path, REAL x1, REAL y1, REAL x2, REAL y2)
{
INT old_count;
TRACE("(%p, %.2f, %.2f, %.2f, %.2f)\n", path, x1, y1, x2, y2);
if(!path)
return InvalidParameter;
if(!lengthen_path(path, 2))
return OutOfMemory;
old_count = path->pathdata.Count;
path->pathdata.Points[old_count].X = x1;
path->pathdata.Points[old_count].Y = y1;
path->pathdata.Points[old_count + 1].X = x2;
path->pathdata.Points[old_count + 1].Y = y2;
path->pathdata.Types[old_count] =
(path->newfigure ? PathPointTypeStart : PathPointTypeLine);
path->pathdata.Types[old_count + 1] = PathPointTypeLine;
path->newfigure = FALSE;
path->pathdata.Count += 2;
return Ok;
}
GpStatus WINGDIPAPI GdipAddPathLineI(GpPath *path, INT x1, INT y1, INT x2, INT y2)
{
TRACE("(%p, %d, %d, %d, %d)\n", path, x1, y1, x2, y2);
return GdipAddPathLine(path, (REAL)x1, (REAL)y1, (REAL)x2, (REAL)y2);
}
GpStatus WINGDIPAPI GdipAddPathPath(GpPath *path, GDIPCONST GpPath* addingPath,
BOOL connect)
{
INT old_count, count;
TRACE("(%p, %p, %d)\n", path, addingPath, connect);
if(!path || !addingPath)
return InvalidParameter;
old_count = path->pathdata.Count;
count = addingPath->pathdata.Count;
if(!lengthen_path(path, count))
return OutOfMemory;
memcpy(&path->pathdata.Points[old_count], addingPath->pathdata.Points,
count * sizeof(GpPointF));
memcpy(&path->pathdata.Types[old_count], addingPath->pathdata.Types, count);
if(path->newfigure || !connect)
path->pathdata.Types[old_count] = PathPointTypeStart;
else
path->pathdata.Types[old_count] = PathPointTypeLine;
path->newfigure = FALSE;
path->pathdata.Count += count;
return Ok;
}
GpStatus WINGDIPAPI GdipAddPathPie(GpPath *path, REAL x, REAL y, REAL width, REAL height,
REAL startAngle, REAL sweepAngle)
{
GpPointF *ptf;
GpStatus status;
INT i, count;
TRACE("(%p, %.2f, %.2f, %.2f, %.2f, %.2f, %.2f)\n",
path, x, y, width, height, startAngle, sweepAngle);
if(!path)
return InvalidParameter;
/* on zero width/height only start point added */
if(width <= 1e-7 || height <= 1e-7){
if(!lengthen_path(path, 1))
return OutOfMemory;
path->pathdata.Points[0].X = x + width / 2.0;
path->pathdata.Points[0].Y = y + height / 2.0;
path->pathdata.Types[0] = PathPointTypeStart | PathPointTypeCloseSubpath;
path->pathdata.Count = 1;
return InvalidParameter;
}
count = arc2polybezier(NULL, x, y, width, height, startAngle, sweepAngle);
if(count == 0)
return Ok;
ptf = GdipAlloc(sizeof(GpPointF)*count);
if(!ptf)
return OutOfMemory;
arc2polybezier(ptf, x, y, width, height, startAngle, sweepAngle);
status = GdipAddPathLine(path, (width - x)/2, (height - y)/2, ptf[0].X, ptf[0].Y);
if(status != Ok){
GdipFree(ptf);
return status;
}
/* one spline is already added as a line endpoint */
if(!lengthen_path(path, count - 1)){
GdipFree(ptf);
return OutOfMemory;
}
memcpy(&(path->pathdata.Points[path->pathdata.Count]), &(ptf[1]),sizeof(GpPointF)*(count-1));
for(i = 0; i < count-1; i++)
path->pathdata.Types[path->pathdata.Count+i] = PathPointTypeBezier;
path->pathdata.Count += count-1;
GdipClosePathFigure(path);
GdipFree(ptf);
return status;
}
GpStatus WINGDIPAPI GdipAddPathPieI(GpPath *path, INT x, INT y, INT width, INT height,
REAL startAngle, REAL sweepAngle)
{
TRACE("(%p, %d, %d, %d, %d, %.2f, %.2f)\n",
path, x, y, width, height, startAngle, sweepAngle);
return GdipAddPathPie(path, (REAL)x, (REAL)y, (REAL)width, (REAL)height, startAngle, sweepAngle);
}
GpStatus WINGDIPAPI GdipAddPathPolygon(GpPath *path, GDIPCONST GpPointF *points, INT count)
{
INT old_count;
TRACE("(%p, %p, %d)\n", path, points, count);
if(!path || !points || count < 3)
return InvalidParameter;
if(!lengthen_path(path, count))
return OutOfMemory;
old_count = path->pathdata.Count;
memcpy(&path->pathdata.Points[old_count], points, count*sizeof(GpPointF));
memset(&path->pathdata.Types[old_count + 1], PathPointTypeLine, count - 1);
/* A polygon is an intrinsic figure */
path->pathdata.Types[old_count] = PathPointTypeStart;
path->pathdata.Types[old_count + count - 1] |= PathPointTypeCloseSubpath;
path->newfigure = TRUE;
path->pathdata.Count += count;
return Ok;
}
GpStatus WINGDIPAPI GdipAddPathPolygonI(GpPath *path, GDIPCONST GpPoint *points, INT count)
{
GpPointF *ptf;
GpStatus status;
INT i;
TRACE("(%p, %p, %d)\n", path, points, count);
if(!points || count < 3)
return InvalidParameter;
ptf = GdipAlloc(sizeof(GpPointF) * count);
if(!ptf)
return OutOfMemory;
for(i = 0; i < count; i++){
ptf[i].X = (REAL)points[i].X;
ptf[i].Y = (REAL)points[i].Y;
}
status = GdipAddPathPolygon(path, ptf, count);
GdipFree(ptf);
return status;
}
GpStatus WINGDIPAPI GdipAddPathString(GpPath* path, GDIPCONST WCHAR* string, INT length, GDIPCONST GpFontFamily* family, INT style, REAL emSize, GDIPCONST RectF* layoutRect, GDIPCONST GpStringFormat* format)
{
FIXME("(%p, %p, %d, %p, %d, %f, %p, %p): stub\n", path, string, length, family, style, emSize, layoutRect, format);
return NotImplemented;
}
GpStatus WINGDIPAPI GdipAddPathStringI(GpPath* path, GDIPCONST WCHAR* string, INT length, GDIPCONST GpFontFamily* family, INT style, REAL emSize, GDIPCONST Rect* layoutRect, GDIPCONST GpStringFormat* format)
{
FIXME("(%p, %p, %d, %p, %d, %f, %p, %p): stub\n", path, string, length, family, style, emSize, layoutRect, format);
return NotImplemented;
}
GpStatus WINGDIPAPI GdipClonePath(GpPath* path, GpPath **clone)
{
TRACE("(%p, %p)\n", path, clone);
if(!path || !clone)
return InvalidParameter;
*clone = GdipAlloc(sizeof(GpPath));
if(!*clone) return OutOfMemory;
**clone = *path;
(*clone)->pathdata.Points = GdipAlloc(path->datalen * sizeof(PointF));
(*clone)->pathdata.Types = GdipAlloc(path->datalen);
if(!(*clone)->pathdata.Points || !(*clone)->pathdata.Types){
GdipFree(*clone);
GdipFree((*clone)->pathdata.Points);
GdipFree((*clone)->pathdata.Types);
return OutOfMemory;
}
memcpy((*clone)->pathdata.Points, path->pathdata.Points,
path->datalen * sizeof(PointF));
memcpy((*clone)->pathdata.Types, path->pathdata.Types, path->datalen);
return Ok;
}
GpStatus WINGDIPAPI GdipClosePathFigure(GpPath* path)
{
TRACE("(%p)\n", path);
if(!path)
return InvalidParameter;
if(path->pathdata.Count > 0){
path->pathdata.Types[path->pathdata.Count - 1] |= PathPointTypeCloseSubpath;
path->newfigure = TRUE;
}
return Ok;
}
GpStatus WINGDIPAPI GdipClosePathFigures(GpPath* path)
{
INT i;
TRACE("(%p)\n", path);
if(!path)
return InvalidParameter;
for(i = 1; i < path->pathdata.Count; i++){
if(path->pathdata.Types[i] == PathPointTypeStart)
path->pathdata.Types[i-1] |= PathPointTypeCloseSubpath;
}
path->newfigure = TRUE;
return Ok;
}
GpStatus WINGDIPAPI GdipCreatePath(GpFillMode fill, GpPath **path)
{
TRACE("(%d, %p)\n", fill, path);
if(!path)
return InvalidParameter;
*path = GdipAlloc(sizeof(GpPath));
if(!*path) return OutOfMemory;
(*path)->fill = fill;
(*path)->newfigure = TRUE;
return Ok;
}
GpStatus WINGDIPAPI GdipCreatePath2(GDIPCONST GpPointF* points,
GDIPCONST BYTE* types, INT count, GpFillMode fill, GpPath **path)
{
TRACE("(%p, %p, %d, %d, %p)\n", points, types, count, fill, path);
if(!path)
return InvalidParameter;
*path = GdipAlloc(sizeof(GpPath));
if(!*path) return OutOfMemory;
(*path)->pathdata.Points = GdipAlloc(count * sizeof(PointF));
(*path)->pathdata.Types = GdipAlloc(count);
if(!(*path)->pathdata.Points || !(*path)->pathdata.Types){
GdipFree((*path)->pathdata.Points);
GdipFree((*path)->pathdata.Types);
GdipFree(*path);
return OutOfMemory;
}
memcpy((*path)->pathdata.Points, points, count * sizeof(PointF));
memcpy((*path)->pathdata.Types, types, count);
(*path)->pathdata.Count = count;
(*path)->datalen = count;
(*path)->fill = fill;
(*path)->newfigure = TRUE;
return Ok;
}
GpStatus WINGDIPAPI GdipCreatePath2I(GDIPCONST GpPoint* points,
GDIPCONST BYTE* types, INT count, GpFillMode fill, GpPath **path)
{
GpPointF *ptF;
GpStatus ret;
INT i;
TRACE("(%p, %p, %d, %d, %p)\n", points, types, count, fill, path);
ptF = GdipAlloc(sizeof(GpPointF)*count);
for(i = 0;i < count; i++){
ptF[i].X = (REAL)points[i].X;
ptF[i].Y = (REAL)points[i].Y;
}
ret = GdipCreatePath2(ptF, types, count, fill, path);
GdipFree(ptF);
return ret;
}
GpStatus WINGDIPAPI GdipDeletePath(GpPath *path)
{
TRACE("(%p)\n", path);
if(!path)
return InvalidParameter;
GdipFree(path->pathdata.Points);
GdipFree(path->pathdata.Types);
GdipFree(path);
return Ok;
}
GpStatus WINGDIPAPI GdipFlattenPath(GpPath *path, GpMatrix* matrix, REAL flatness)
{
path_list_node_t *list, *node;
GpPointF pt;
INT i = 1;
INT startidx = 0;
TRACE("(%p, %p, %.2f)\n", path, matrix, flatness);
if(!path)
return InvalidParameter;
if(matrix){
WARN("transformation not supported yet!\n");
return NotImplemented;
}
if(path->pathdata.Count == 0)
return Ok;
pt = path->pathdata.Points[0];
if(!init_path_list(&list, pt.X, pt.Y))
return OutOfMemory;
node = list;
while(i < path->pathdata.Count){
BYTE type = path->pathdata.Types[i] & PathPointTypePathTypeMask;
path_list_node_t *start;
pt = path->pathdata.Points[i];
/* save last start point index */
if(type == PathPointTypeStart)
startidx = i;
/* always add line points and start points */
if((type == PathPointTypeStart) || (type == PathPointTypeLine)){
if(!add_path_list_node(node, pt.X, pt.Y, path->pathdata.Types[i]))
goto memout;
node = node->next;
++i;
continue;
}
/* Bezier curve always stored as 4 points */
if((path->pathdata.Types[i-1] & PathPointTypePathTypeMask) != PathPointTypeStart){
type = (path->pathdata.Types[i] & ~PathPointTypePathTypeMask) | PathPointTypeLine;
if(!add_path_list_node(node, pt.X, pt.Y, type))
goto memout;
node = node->next;
}
/* test for closed figure */
if(path->pathdata.Types[i+1] & PathPointTypeCloseSubpath){
pt = path->pathdata.Points[startidx];
++i;
}
else
{
i += 2;
pt = path->pathdata.Points[i];
};
start = node;
/* add Bezier end point */
type = (path->pathdata.Types[i] & ~PathPointTypePathTypeMask) | PathPointTypeLine;
if(!add_path_list_node(node, pt.X, pt.Y, type))
goto memout;
node = node->next;
/* flatten curve */
if(!flatten_bezier(start, path->pathdata.Points[i-2].X, path->pathdata.Points[i-2].Y,
path->pathdata.Points[i-1].X, path->pathdata.Points[i-1].Y,
node, flatness))
goto memout;
++i;
}/* while */
/* store path data back */
i = path_list_count(list);
if(!lengthen_path(path, i))
goto memout;
path->pathdata.Count = i;
node = list;
for(i = 0; i < path->pathdata.Count; i++){
path->pathdata.Points[i] = node->pt;
path->pathdata.Types[i] = node->type;
node = node->next;
}
free_path_list(list);
return Ok;
memout:
free_path_list(list);
return OutOfMemory;
}
GpStatus WINGDIPAPI GdipGetPathData(GpPath *path, GpPathData* pathData)
{
TRACE("(%p, %p)\n", path, pathData);
if(!path || !pathData)
return InvalidParameter;
/* Only copy data. pathData allocation/freeing controlled by wrapper class.
Assumed that pathData is enough wide to get all data - controlled by wrapper too. */
memcpy(pathData->Points, path->pathdata.Points, sizeof(PointF) * pathData->Count);
memcpy(pathData->Types , path->pathdata.Types , pathData->Count);
return Ok;
}
GpStatus WINGDIPAPI GdipGetPathFillMode(GpPath *path, GpFillMode *fillmode)
{
TRACE("(%p, %p)\n", path, fillmode);
if(!path || !fillmode)
return InvalidParameter;
*fillmode = path->fill;
return Ok;
}
GpStatus WINGDIPAPI GdipGetPathLastPoint(GpPath* path, GpPointF* lastPoint)
{
INT count;
TRACE("(%p, %p)\n", path, lastPoint);
if(!path || !lastPoint)
return InvalidParameter;
count = path->pathdata.Count;
if(count > 0)
*lastPoint = path->pathdata.Points[count-1];
return Ok;
}
GpStatus WINGDIPAPI GdipGetPathPoints(GpPath *path, GpPointF* points, INT count)
{
TRACE("(%p, %p, %d)\n", path, points, count);
if(!path)
return InvalidParameter;
if(count < path->pathdata.Count)
return InsufficientBuffer;
memcpy(points, path->pathdata.Points, path->pathdata.Count * sizeof(GpPointF));
return Ok;
}
GpStatus WINGDIPAPI GdipGetPathPointsI(GpPath *path, GpPoint* points, INT count)
{
GpStatus ret;
GpPointF *ptf;
INT i;
TRACE("(%p, %p, %d)\n", path, points, count);
if(count <= 0)
return InvalidParameter;
ptf = GdipAlloc(sizeof(GpPointF)*count);
if(!ptf) return OutOfMemory;
ret = GdipGetPathPoints(path,ptf,count);
if(ret == Ok)
for(i = 0;i < count;i++){
points[i].X = roundr(ptf[i].X);
points[i].Y = roundr(ptf[i].Y);
};
GdipFree(ptf);
return ret;
}
GpStatus WINGDIPAPI GdipGetPathTypes(GpPath *path, BYTE* types, INT count)
{
TRACE("(%p, %p, %d)\n", path, types, count);
if(!path)
return InvalidParameter;
if(count < path->pathdata.Count)
return InsufficientBuffer;
memcpy(types, path->pathdata.Types, path->pathdata.Count);
return Ok;
}
/* Windows expands the bounding box to the maximum possible bounding box
* for a given pen. For example, if a line join can extend past the point
* it's joining by x units, the bounding box is extended by x units in every
* direction (even though this is too conservative for most cases). */
GpStatus WINGDIPAPI GdipGetPathWorldBounds(GpPath* path, GpRectF* bounds,
GDIPCONST GpMatrix *matrix, GDIPCONST GpPen *pen)
{
GpPointF * points, temp_pts[4];
INT count, i;
REAL path_width = 1.0, width, height, temp, low_x, low_y, high_x, high_y;
TRACE("(%p, %p, %p, %p)\n", path, bounds, matrix, pen);
/* Matrix and pen can be null. */
if(!path || !bounds)
return InvalidParameter;
/* If path is empty just return. */
count = path->pathdata.Count;
if(count == 0){
bounds->X = bounds->Y = bounds->Width = bounds->Height = 0.0;
return Ok;
}
points = path->pathdata.Points;
low_x = high_x = points[0].X;
low_y = high_y = points[0].Y;
for(i = 1; i < count; i++){
low_x = min(low_x, points[i].X);
low_y = min(low_y, points[i].Y);
high_x = max(high_x, points[i].X);
high_y = max(high_y, points[i].Y);
}
width = high_x - low_x;
height = high_y - low_y;
/* This looks unusual but it's the only way I can imitate windows. */
if(matrix){
temp_pts[0].X = low_x;
temp_pts[0].Y = low_y;
temp_pts[1].X = low_x;
temp_pts[1].Y = high_y;
temp_pts[2].X = high_x;
temp_pts[2].Y = high_y;
temp_pts[3].X = high_x;
temp_pts[3].Y = low_y;
GdipTransformMatrixPoints((GpMatrix*)matrix, temp_pts, 4);
low_x = temp_pts[0].X;
low_y = temp_pts[0].Y;
for(i = 1; i < 4; i++){
low_x = min(low_x, temp_pts[i].X);
low_y = min(low_y, temp_pts[i].Y);
}
temp = width;
width = height * fabs(matrix->matrix[2]) + width * fabs(matrix->matrix[0]);
height = height * fabs(matrix->matrix[3]) + temp * fabs(matrix->matrix[1]);
}
if(pen){
path_width = pen->width / 2.0;
if(count > 2)
path_width = max(path_width, pen->width * pen->miterlimit / 2.0);
/* FIXME: this should probably also check for the startcap */
if(pen->endcap & LineCapNoAnchor)
path_width = max(path_width, pen->width * 2.2);
low_x -= path_width;
low_y -= path_width;
width += 2.0 * path_width;
height += 2.0 * path_width;
}
bounds->X = low_x;
bounds->Y = low_y;
bounds->Width = width;
bounds->Height = height;
return Ok;
}
GpStatus WINGDIPAPI GdipGetPathWorldBoundsI(GpPath* path, GpRect* bounds,
GDIPCONST GpMatrix *matrix, GDIPCONST GpPen *pen)
{
GpStatus ret;
GpRectF boundsF;
TRACE("(%p, %p, %p, %p)\n", path, bounds, matrix, pen);
ret = GdipGetPathWorldBounds(path,&boundsF,matrix,pen);
if(ret == Ok){
bounds->X = roundr(boundsF.X);
bounds->Y = roundr(boundsF.Y);
bounds->Width = roundr(boundsF.Width);
bounds->Height = roundr(boundsF.Height);
}
return ret;
}
GpStatus WINGDIPAPI GdipGetPointCount(GpPath *path, INT *count)
{
TRACE("(%p, %p)\n", path, count);
if(!path)
return InvalidParameter;
*count = path->pathdata.Count;
return Ok;
}
GpStatus WINGDIPAPI GdipReversePath(GpPath* path)
{
INT i, count;
INT start = 0; /* position in reversed path */
GpPathData revpath;
TRACE("(%p)\n", path);
if(!path)
return InvalidParameter;
count = path->pathdata.Count;
if(count == 0) return Ok;
revpath.Points = GdipAlloc(sizeof(GpPointF)*count);
revpath.Types = GdipAlloc(sizeof(BYTE)*count);
revpath.Count = count;
if(!revpath.Points || !revpath.Types){
GdipFree(revpath.Points);
GdipFree(revpath.Types);
return OutOfMemory;
}
for(i = 0; i < count; i++){
/* find next start point */
if(path->pathdata.Types[count-i-1] == PathPointTypeStart){
INT j;
for(j = start; j <= i; j++){
revpath.Points[j] = path->pathdata.Points[count-j-1];
revpath.Types[j] = path->pathdata.Types[count-j-1];
}
/* mark start point */
revpath.Types[start] = PathPointTypeStart;
/* set 'figure' endpoint type */
if(i-start > 1){
revpath.Types[i] = path->pathdata.Types[count-start-1] & ~PathPointTypePathTypeMask;
revpath.Types[i] |= revpath.Types[i-1];
}
else
revpath.Types[i] = path->pathdata.Types[start];
start = i+1;
}
}
memcpy(path->pathdata.Points, revpath.Points, sizeof(GpPointF)*count);
memcpy(path->pathdata.Types, revpath.Types, sizeof(BYTE)*count);
GdipFree(revpath.Points);
GdipFree(revpath.Types);
return Ok;
}
GpStatus WINGDIPAPI GdipIsOutlineVisiblePathPointI(GpPath* path, INT x, INT y,
GpPen *pen, GpGraphics *graphics, BOOL *result)
{
TRACE("(%p, %d, %d, %p, %p, %p)\n", path, x, y, pen, graphics, result);
return GdipIsOutlineVisiblePathPoint(path, x, y, pen, graphics, result);
}
GpStatus WINGDIPAPI GdipIsOutlineVisiblePathPoint(GpPath* path, REAL x, REAL y,
GpPen *pen, GpGraphics *graphics, BOOL *result)
{
static int calls;
if(!path || !pen)
return InvalidParameter;
if(!(calls++))
FIXME("not implemented\n");
return NotImplemented;
}
GpStatus WINGDIPAPI GdipIsVisiblePathPointI(GpPath* path, INT x, INT y, GpGraphics *graphics, BOOL *result)
{
TRACE("(%p, %d, %d, %p, %p)\n", path, x, y, graphics, result);
return GdipIsVisiblePathPoint(path, x, y, graphics, result);
}
/*****************************************************************************
* GdipIsVisiblePathPoint [GDIPLUS.@]
*/
GpStatus WINGDIPAPI GdipIsVisiblePathPoint(GpPath* path, REAL x, REAL y, GpGraphics *graphics, BOOL *result)
{
GpRegion *region;
HRGN hrgn;
GpStatus status;
if(!path || !result) return InvalidParameter;
status = GdipCreateRegionPath(path, &region);
if(status != Ok)
return status;
status = GdipGetRegionHRgn(region, graphics, &hrgn);
if(status != Ok){
GdipDeleteRegion(region);
return status;
}
*result = PtInRegion(hrgn, roundr(x), roundr(y));
DeleteObject(hrgn);
GdipDeleteRegion(region);
return Ok;
}
GpStatus WINGDIPAPI GdipStartPathFigure(GpPath *path)
{
TRACE("(%p)\n", path);
if(!path)
return InvalidParameter;
path->newfigure = TRUE;
return Ok;
}
GpStatus WINGDIPAPI GdipResetPath(GpPath *path)
{
TRACE("(%p)\n", path);
if(!path)
return InvalidParameter;
path->pathdata.Count = 0;
path->newfigure = TRUE;
path->fill = FillModeAlternate;
return Ok;
}
GpStatus WINGDIPAPI GdipSetPathFillMode(GpPath *path, GpFillMode fill)
{
TRACE("(%p, %d)\n", path, fill);
if(!path)
return InvalidParameter;
path->fill = fill;
return Ok;
}
GpStatus WINGDIPAPI GdipTransformPath(GpPath *path, GpMatrix *matrix)
{
TRACE("(%p, %p)\n", path, matrix);
if(!path)
return InvalidParameter;
if(path->pathdata.Count == 0)
return Ok;
return GdipTransformMatrixPoints(matrix, path->pathdata.Points,
path->pathdata.Count);
}
GpStatus WINGDIPAPI GdipWarpPath(GpPath *path, GpMatrix* matrix,
GDIPCONST GpPointF *points, INT count, REAL x, REAL y, REAL width,
REAL height, WarpMode warpmode, REAL flatness)
{
FIXME("(%p,%p,%p,%i,%0.2f,%0.2f,%0.2f,%0.2f,%i,%0.2f)\n", path, matrix,
points, count, x, y, width, height, warpmode, flatness);
return NotImplemented;
}
GpStatus WINGDIPAPI GdipWidenPath(GpPath *path, GpPen *pen, GpMatrix *matrix,
REAL flatness)
{
FIXME("(%p,%p,%p,%0.2f)\n", path, pen, matrix, flatness);
return NotImplemented;
}
GpStatus WINGDIPAPI GdipAddPathRectangle(GpPath *path, REAL x, REAL y,
REAL width, REAL height)
{
GpPath *backup;
GpPointF ptf[2];
GpStatus retstat;
BOOL old_new;
TRACE("(%p, %.2f, %.2f, %.2f, %.2f)\n", path, x, y, width, height);
if(!path || width < 0.0 || height < 0.0)
return InvalidParameter;
/* make a backup copy of path data */
if((retstat = GdipClonePath(path, &backup)) != Ok)
return retstat;
/* rectangle should start as new path */
old_new = path->newfigure;
path->newfigure = TRUE;
if((retstat = GdipAddPathLine(path,x,y,x+width,y)) != Ok){
path->newfigure = old_new;
goto fail;
}
ptf[0].X = x+width;
ptf[0].Y = y+height;
ptf[1].X = x;
ptf[1].Y = y+height;
if((retstat = GdipAddPathLine2(path, ptf, 2)) != Ok) goto fail;
path->pathdata.Types[path->pathdata.Count-1] |= PathPointTypeCloseSubpath;
/* free backup */
GdipDeletePath(backup);
return Ok;
fail:
/* reverting */
GdipDeletePath(path);
GdipClonePath(backup, &path);
GdipDeletePath(backup);
return retstat;
}
GpStatus WINGDIPAPI GdipAddPathRectangleI(GpPath *path, INT x, INT y,
INT width, INT height)
{
TRACE("(%p, %d, %d, %d, %d)\n", path, x, y, width, height);
return GdipAddPathRectangle(path,(REAL)x,(REAL)y,(REAL)width,(REAL)height);
}
GpStatus WINGDIPAPI GdipAddPathRectangles(GpPath *path, GDIPCONST GpRectF *rects, INT count)
{
GpPath *backup;
GpStatus retstat;
INT i;
TRACE("(%p, %p, %d)\n", path, rects, count);
/* count == 0 - verified condition */
if(!path || !rects || count == 0)
return InvalidParameter;
if(count < 0)
return OutOfMemory;
/* make a backup copy */
if((retstat = GdipClonePath(path, &backup)) != Ok)
return retstat;
for(i = 0; i < count; i++){
if((retstat = GdipAddPathRectangle(path,rects[i].X,rects[i].Y,rects[i].Width,rects[i].Height)) != Ok)
goto fail;
}
/* free backup */
GdipDeletePath(backup);
return Ok;
fail:
/* reverting */
GdipDeletePath(path);
GdipClonePath(backup, &path);
GdipDeletePath(backup);
return retstat;
}
GpStatus WINGDIPAPI GdipAddPathRectanglesI(GpPath *path, GDIPCONST GpRect *rects, INT count)
{
GpRectF *rectsF;
GpStatus retstat;
INT i;
TRACE("(%p, %p, %d)\n", path, rects, count);
if(!rects || count == 0)
return InvalidParameter;
if(count < 0)
return OutOfMemory;
rectsF = GdipAlloc(sizeof(GpRectF)*count);
for(i = 0;i < count;i++){
rectsF[i].X = (REAL)rects[i].X;
rectsF[i].Y = (REAL)rects[i].Y;
rectsF[i].Width = (REAL)rects[i].Width;
rectsF[i].Height = (REAL)rects[i].Height;
}
retstat = GdipAddPathRectangles(path, rectsF, count);
GdipFree(rectsF);
return retstat;
}
GpStatus WINGDIPAPI GdipSetPathMarker(GpPath* path)
{
INT count;
TRACE("(%p)\n", path);
if(!path)
return InvalidParameter;
count = path->pathdata.Count;
/* set marker flag */
if(count > 0)
path->pathdata.Types[count-1] |= PathPointTypePathMarker;
return Ok;
}
GpStatus WINGDIPAPI GdipClearPathMarkers(GpPath* path)
{
INT count;
INT i;
TRACE("(%p)\n", path);
if(!path)
return InvalidParameter;
count = path->pathdata.Count;
for(i = 0; i < count - 1; i++){
path->pathdata.Types[i] &= ~PathPointTypePathMarker;
}
return Ok;
}