442 lines
11 KiB
C
442 lines
11 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 "gdiplus.h"
|
|
#include "gdiplus_private.h"
|
|
#include "wine/debug.h"
|
|
|
|
WINE_DEFAULT_DEBUG_CHANNEL(gdiplus);
|
|
|
|
/* make sure path has enough space for len more points */
|
|
static BOOL lengthen_path(GpPath *path, INT len)
|
|
{
|
|
/* initial allocation */
|
|
if(path->datalen == 0){
|
|
path->datalen = len * 2;
|
|
|
|
path->pathdata.Points = GdipAlloc(path->datalen * sizeof(PointF));
|
|
if(!path->pathdata.Points) return FALSE;
|
|
|
|
path->pathdata.Types = GdipAlloc(path->datalen);
|
|
if(!path->pathdata.Types){
|
|
GdipFree(path->pathdata.Points);
|
|
return FALSE;
|
|
}
|
|
}
|
|
/* reallocation, double size of arrays */
|
|
else if(path->datalen - path->pathdata.Count < len){
|
|
while(path->datalen - path->pathdata.Count < len)
|
|
path->datalen *= 2;
|
|
|
|
path->pathdata.Points = HeapReAlloc(GetProcessHeap(), 0,
|
|
path->pathdata.Points, path->datalen * sizeof(PointF));
|
|
if(!path->pathdata.Points) return FALSE;
|
|
|
|
path->pathdata.Types = HeapReAlloc(GetProcessHeap(), 0,
|
|
path->pathdata.Types, path->datalen);
|
|
if(!path->pathdata.Types) return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
GpStatus WINGDIPAPI GdipAddPathArc(GpPath *path, REAL x1, REAL y1, REAL x2,
|
|
REAL y2, REAL startAngle, REAL sweepAngle)
|
|
{
|
|
INT count, old_count, i;
|
|
|
|
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 GdipAddPathBeziers(GpPath *path, GDIPCONST GpPointF *points,
|
|
INT count)
|
|
{
|
|
INT i, old_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 GdipAddPathEllipse(GpPath *path, REAL x, REAL y, REAL width,
|
|
REAL height)
|
|
{
|
|
INT old_count, numpts;
|
|
|
|
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 instrinsic figure (always 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 GdipAddPathLine2(GpPath *path, GDIPCONST GpPointF *points,
|
|
INT count)
|
|
{
|
|
INT i, old_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 GdipAddPathPath(GpPath *path, GDIPCONST GpPath* addingPath,
|
|
BOOL connect)
|
|
{
|
|
INT old_count, count;
|
|
|
|
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 GdipClosePathFigure(GpPath* 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;
|
|
|
|
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)
|
|
{
|
|
if(!path)
|
|
return InvalidParameter;
|
|
|
|
*path = GdipAlloc(sizeof(GpPath));
|
|
if(!*path) return OutOfMemory;
|
|
|
|
(*path)->fill = fill;
|
|
(*path)->newfigure = TRUE;
|
|
|
|
return Ok;
|
|
}
|
|
|
|
GpStatus WINGDIPAPI GdipDeletePath(GpPath *path)
|
|
{
|
|
if(!path)
|
|
return InvalidParameter;
|
|
|
|
GdipFree(path->pathdata.Points);
|
|
GdipFree(path->pathdata.Types);
|
|
GdipFree(path);
|
|
|
|
return Ok;
|
|
}
|
|
|
|
GpStatus WINGDIPAPI GdipGetPathFillMode(GpPath *path, GpFillMode *fillmode)
|
|
{
|
|
if(!path || !fillmode)
|
|
return InvalidParameter;
|
|
|
|
*fillmode = path->fill;
|
|
|
|
return Ok;
|
|
}
|
|
|
|
GpStatus WINGDIPAPI GdipGetPathPoints(GpPath *path, GpPointF* points, INT 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 GdipGetPathTypes(GpPath *path, BYTE* types, INT 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;
|
|
|
|
/* 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 GdipGetPointCount(GpPath *path, INT *count)
|
|
{
|
|
if(!path)
|
|
return InvalidParameter;
|
|
|
|
*count = path->pathdata.Count;
|
|
|
|
return Ok;
|
|
}
|
|
|
|
GpStatus WINGDIPAPI GdipStartPathFigure(GpPath *path)
|
|
{
|
|
if(!path)
|
|
return InvalidParameter;
|
|
|
|
path->newfigure = TRUE;
|
|
|
|
return Ok;
|
|
}
|
|
|
|
GpStatus WINGDIPAPI GdipResetPath(GpPath *path)
|
|
{
|
|
if(!path)
|
|
return InvalidParameter;
|
|
|
|
path->pathdata.Count = 0;
|
|
path->newfigure = TRUE;
|
|
path->fill = FillModeAlternate;
|
|
|
|
return Ok;
|
|
}
|
|
|
|
GpStatus WINGDIPAPI GdipSetPathFillMode(GpPath *path, GpFillMode fill)
|
|
{
|
|
if(!path)
|
|
return InvalidParameter;
|
|
|
|
path->fill = fill;
|
|
|
|
return Ok;
|
|
}
|
|
|
|
GpStatus WINGDIPAPI GdipTransformPath(GpPath *path, GpMatrix *matrix)
|
|
{
|
|
if(!path)
|
|
return InvalidParameter;
|
|
|
|
if(path->pathdata.Count == 0)
|
|
return Ok;
|
|
|
|
return GdipTransformMatrixPoints(matrix, (GpPointF*) path->pathdata.Points,
|
|
path->pathdata.Count);
|
|
}
|