/*
 * 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
 */

#ifndef __WINE_GP_PRIVATE_H_
#define __WINE_GP_PRIVATE_H_

#include <math.h>
#include <stdarg.h>

#include "windef.h"
#include "wingdi.h"
#include "winbase.h"
#include "winuser.h"

#include "objbase.h"
#include "ocidl.h"

#include "gdiplus.h"

#define GP_DEFAULT_PENSTYLE (PS_GEOMETRIC | PS_SOLID | PS_ENDCAP_FLAT | PS_JOIN_MITER)
#define MAX_ARC_PTS (13)
#define MAX_DASHLEN (16) /* this is a limitation of gdi */
#define INCH_HIMETRIC (2540)

COLORREF ARGB2COLORREF(ARGB color);
extern INT arc2polybezier(GpPointF * points, REAL x1, REAL y1, REAL x2, REAL y2,
    REAL startAngle, REAL sweepAngle);
extern REAL gdiplus_atan2(REAL dy, REAL dx);
extern GpStatus hresult_to_status(HRESULT res);
extern REAL convert_unit(HDC hdc, GpUnit unit);

static inline INT roundr(REAL x)
{
    return (INT) floorf(x + 0.5);
}

static inline REAL deg2rad(REAL degrees)
{
    return M_PI * degrees / 180.0;
}

struct GpPen{
    UINT style;
    GpUnit unit;
    REAL width;
    GpLineCap endcap;
    GpLineCap startcap;
    GpDashCap dashcap;
    GpCustomLineCap *customstart;
    GpCustomLineCap *customend;
    GpLineJoin join;
    REAL miterlimit;
    GpDashStyle dash;
    REAL *dashes;
    INT numdashes;
    REAL offset;    /* dash offset */
    GpBrush *brush;
};

struct GpGraphics{
    HDC hdc;
    HWND hwnd;
    SmoothingMode smoothing;
    CompositingQuality compqual;
    InterpolationMode interpolation;
    PixelOffsetMode pixeloffset;
    CompositingMode compmode;
    GpUnit unit;    /* page unit */
    REAL scale;     /* page scale */
    GpMatrix * worldtrans; /* world transform */
};

struct GpBrush{
    HBRUSH gdibrush;
    GpBrushType bt;
    LOGBRUSH lb;
};

struct GpSolidFill{
    GpBrush brush;
    ARGB color;
};

struct GpPathGradient{
    GpBrush brush;
    PathData pathdata;
    ARGB centercolor;
    GpWrapMode wrap;
    BOOL gamma;
    GpPointF center;
    GpPointF focus;
};

struct GpLineGradient{
    GpBrush brush;
    GpPointF startpoint;
    GpPointF endpoint;
    ARGB startcolor;
    ARGB endcolor;
    GpWrapMode wrap;
    BOOL gamma;
};

struct GpTexture{
    GpBrush brush;
};

struct GpPath{
    GpFillMode fill;
    GpPathData pathdata;
    BOOL newfigure; /* whether the next drawing action starts a new figure */
    INT datalen; /* size of the arrays in pathdata */
};

struct GpMatrix{
    REAL matrix[6];
};

struct GpPathIterator{
    GpPathData pathdata;
    INT subpath_pos;    /* for NextSubpath methods */
    INT marker_pos;     /* for NextMarker methods */
    INT pathtype_pos;   /* for NextPathType methods */
};

struct GpCustomLineCap{
    GpPathData pathdata;
    BOOL fill;      /* TRUE for fill, FALSE for stroke */
    GpLineCap cap;  /* as far as I can tell, this value is ignored */
    REAL inset;     /* how much to adjust the end of the line */
};

struct GpImage{
    IPicture* picture;
    ImageType type;
};

struct GpMetafile{
    GpImage image;
    GpRectF bounds;
    GpUnit unit;
};

struct GpBitmap{
    GpImage image;
    INT width;
    INT height;
    PixelFormat format;
    ImageLockMode lockmode;
    INT numlocks;
    BYTE *bitmapbits;   /* pointer to the buffer we passed in BitmapLockBits */
};

struct GpImageAttributes{
    WrapMode wrap;
};

#endif