/*
 * 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 "winnls.h"
#include "winreg.h"
#include "wine/debug.h"
#include "wine/unicode.h"

WINE_DEFAULT_DEBUG_CHANNEL (gdiplus);

#include "objbase.h"

#include "gdiplus.h"
#include "gdiplus_private.h"

static const REAL mm_per_inch = 25.4;
static const REAL inch_per_point = 1.0/72.0;

static GpFontCollection installedFontCollection = {0};

static inline REAL get_dpi (void)
{
    REAL dpi;
    GpGraphics *graphics;
    HDC hdc = GetDC(0);
    GdipCreateFromHDC (hdc, &graphics);
    GdipGetDpiX(graphics, &dpi);
    GdipDeleteGraphics(graphics);
    ReleaseDC (0, hdc);

    return dpi;
}

static inline REAL point_to_pixel (REAL point)
{
    return point * get_dpi() * inch_per_point;
}

static inline REAL inch_to_pixel (REAL inch)
{
    return inch * get_dpi();
}

static inline REAL document_to_pixel (REAL doc)
{
    return doc * (get_dpi() / 300.0); /* Per MSDN */
}

static inline REAL mm_to_pixel (REAL mm)
{
    return mm * (get_dpi() / mm_per_inch);
}

/*******************************************************************************
 * GdipCreateFont [GDIPLUS.@]
 *
 * Create a new font based off of a FontFamily
 *
 * PARAMS
 *  *fontFamily     [I] Family to base the font off of
 *  emSize          [I] Size of the font
 *  style           [I] Bitwise OR of FontStyle enumeration
 *  unit            [I] Unit emSize is measured in
 *  **font          [I] the resulting Font object
 *
 * RETURNS
 *  SUCCESS: Ok
 *  FAILURE: InvalidParameter if fontfamily or font is NULL.
 *  FAILURE: FontFamilyNotFound if an invalid FontFamily is given
 *
 * NOTES
 *  UnitDisplay is unsupported.
 *  emSize is stored separately from lfHeight, to hold the fraction.
 */
GpStatus WINGDIPAPI GdipCreateFont(GDIPCONST GpFontFamily *fontFamily,
                        REAL emSize, INT style, Unit unit, GpFont **font)
{
    WCHAR facename[LF_FACESIZE];
    LOGFONTW* lfw;
    const OUTLINETEXTMETRICW *otm;
    GpStatus stat;

    if (!fontFamily || !font)
        return InvalidParameter;

    TRACE("%p (%s), %f, %d, %d, %p\n", fontFamily,
            debugstr_w(fontFamily->FamilyName), emSize, style, unit, font);

    stat = GdipGetFamilyName (fontFamily, facename, 0);
    if (stat != Ok) return stat;
    *font = GdipAlloc(sizeof(GpFont));

    otm = &fontFamily->otm;
    lfw = &((*font)->lfw);
    ZeroMemory(&(*lfw), sizeof(*lfw));

    lfw->lfWeight = otm->otmTextMetrics.tmWeight;
    lfw->lfItalic = otm->otmTextMetrics.tmItalic;
    lfw->lfUnderline = otm->otmTextMetrics.tmUnderlined;
    lfw->lfStrikeOut = otm->otmTextMetrics.tmStruckOut;
    lfw->lfCharSet = otm->otmTextMetrics.tmCharSet;
    lfw->lfPitchAndFamily = otm->otmTextMetrics.tmPitchAndFamily;
    lstrcpynW(lfw->lfFaceName, facename, LF_FACESIZE);

    switch (unit)
    {
        case UnitWorld:
            /* FIXME: Figure out when World != Pixel */
            (*font)->pixel_size = emSize; break;
        case UnitDisplay:
            FIXME("Unknown behavior for UnitDisplay! Please report!\n");
            /* FIXME: Figure out how this works...
             * MSDN says that if "DISPLAY" is a monitor, then pixel should be
             * used. That's not what I got. Tests on Windows revealed no output,
             * and the tests in tests/font crash windows */
            (*font)->pixel_size = 0; break;
        case UnitPixel:
            (*font)->pixel_size = emSize; break;
        case UnitPoint:
            (*font)->pixel_size = point_to_pixel(emSize); break;
        case UnitInch:
            (*font)->pixel_size = inch_to_pixel(emSize); break;
        case UnitDocument:
            (*font)->pixel_size = document_to_pixel(emSize); break;
        case UnitMillimeter:
            (*font)->pixel_size = mm_to_pixel(emSize); break;
    }

    lfw->lfHeight = (*font)->pixel_size * -1;

    lfw->lfWeight = style & FontStyleBold ? FW_BOLD : FW_REGULAR;
    lfw->lfItalic = style & FontStyleItalic;
    lfw->lfUnderline = style & FontStyleUnderline;
    lfw->lfStrikeOut = style & FontStyleStrikeout;

    (*font)->unit = unit;
    (*font)->emSize = emSize;
    (*font)->height = otm->otmEMSquare;
    (*font)->line_spacing = otm->otmTextMetrics.tmAscent + otm->otmTextMetrics.tmDescent + otm->otmTextMetrics.tmExternalLeading;

    TRACE("<-- %p\n", *font);

    return Ok;
}

/*******************************************************************************
 * GdipCreateFontFromLogfontW [GDIPLUS.@]
 */
GpStatus WINGDIPAPI GdipCreateFontFromLogfontW(HDC hdc,
    GDIPCONST LOGFONTW *logfont, GpFont **font)
{
    HFONT hfont, oldfont;
    TEXTMETRICW textmet;

    TRACE("(%p, %p, %p)\n", hdc, logfont, font);

    if(!logfont || !font)
        return InvalidParameter;

    if (logfont->lfFaceName[0] == 0)
        return NotTrueTypeFont;

    *font = GdipAlloc(sizeof(GpFont));
    if(!*font)  return OutOfMemory;

    memcpy((*font)->lfw.lfFaceName, logfont->lfFaceName, LF_FACESIZE *
           sizeof(WCHAR));
    (*font)->lfw.lfHeight = logfont->lfHeight;
    (*font)->lfw.lfItalic = logfont->lfItalic;
    (*font)->lfw.lfUnderline = logfont->lfUnderline;
    (*font)->lfw.lfStrikeOut = logfont->lfStrikeOut;

    hfont = CreateFontIndirectW(&(*font)->lfw);
    oldfont = SelectObject(hdc, hfont);
    GetTextMetricsW(hdc, &textmet);

    (*font)->lfw.lfHeight = -(textmet.tmHeight-textmet.tmInternalLeading);
    (*font)->lfw.lfWeight = textmet.tmWeight;
    (*font)->lfw.lfCharSet = textmet.tmCharSet;

    (*font)->pixel_size = (*font)->emSize = textmet.tmHeight;
    (*font)->unit = UnitPixel;
    (*font)->height = 1; /* FIXME: need NEWTEXTMETRIC.ntmSizeEM here */
    (*font)->line_spacing = textmet.tmAscent + textmet.tmDescent + textmet.tmExternalLeading;

    SelectObject(hdc, oldfont);
    DeleteObject(hfont);

    TRACE("<-- %p\n", *font);

    return Ok;
}

/*******************************************************************************
 * GdipCreateFontFromLogfontA [GDIPLUS.@]
 */
GpStatus WINGDIPAPI GdipCreateFontFromLogfontA(HDC hdc,
    GDIPCONST LOGFONTA *lfa, GpFont **font)
{
    LOGFONTW lfw;

    TRACE("(%p, %p, %p)\n", hdc, lfa, font);

    if(!lfa || !font)
        return InvalidParameter;

    memcpy(&lfw, lfa, FIELD_OFFSET(LOGFONTA,lfFaceName) );

    if(!MultiByteToWideChar(CP_ACP, 0, lfa->lfFaceName, -1, lfw.lfFaceName, LF_FACESIZE))
        return GenericError;

    return GdipCreateFontFromLogfontW(hdc, &lfw, font);
}

/*******************************************************************************
 * GdipDeleteFont [GDIPLUS.@]
 */
GpStatus WINGDIPAPI GdipDeleteFont(GpFont* font)
{
    TRACE("(%p)\n", font);

    if(!font)
        return InvalidParameter;

    GdipFree(font);

    return Ok;
}

/*******************************************************************************
 * GdipCreateFontFromDC [GDIPLUS.@]
 */
GpStatus WINGDIPAPI GdipCreateFontFromDC(HDC hdc, GpFont **font)
{
    HFONT hfont;
    LOGFONTW lfw;

    TRACE("(%p, %p)\n", hdc, font);

    if(!font)
        return InvalidParameter;

    hfont = GetCurrentObject(hdc, OBJ_FONT);
    if(!hfont)
        return GenericError;

    if(!GetObjectW(hfont, sizeof(LOGFONTW), &lfw))
        return GenericError;

    return GdipCreateFontFromLogfontW(hdc, &lfw, font);
}

/*******************************************************************************
 * GdipGetFamily [GDIPLUS.@]
 *
 * Returns the FontFamily for the specified Font
 *
 * PARAMS
 *  font    [I] Font to request from
 *  family  [O] Resulting FontFamily object
 *
 * RETURNS
 *  SUCCESS: Ok
 *  FAILURE: An element of GpStatus
 */
GpStatus WINGDIPAPI GdipGetFamily(GpFont *font, GpFontFamily **family)
{
    TRACE("%p %p\n", font, family);

    if (!(font && family))
        return InvalidParameter;

    return GdipCreateFontFamilyFromName(font->lfw.lfFaceName, NULL, family);
}

/******************************************************************************
 * GdipGetFontSize [GDIPLUS.@]
 *
 * Returns the size of the font in Units
 *
 * PARAMS
 *  *font       [I] The font to retrieve size from
 *  *size       [O] Pointer to hold retrieved value
 *
 * RETURNS
 *  SUCCESS: Ok
 *  FAILURE: InvalidParameter (font or size was NULL)
 *
 * NOTES
 *  Size returned is actually emSize -- not internal size used for drawing.
 */
GpStatus WINGDIPAPI GdipGetFontSize(GpFont *font, REAL *size)
{
    TRACE("(%p, %p)\n", font, size);

    if (!(font && size)) return InvalidParameter;

    *size = font->emSize;

    return Ok;
}

/*******************************************************************************
 * GdipGetFontStyle [GDIPLUS.@]
 *
 * Gets the font's style, returned in bitwise OR of FontStyle enumeration
 *
 * PARAMS
 *  font    [I] font to request from
 *  style   [O] resulting pointer to a FontStyle enumeration
 *
 * RETURNS
 *  SUCCESS: Ok
 *  FAILURE: InvalidParameter
 */
GpStatus WINGDIPAPI GdipGetFontStyle(GpFont *font, INT *style)
{
    TRACE("%p %p\n", font, style);

    if (!(font && style))
        return InvalidParameter;

    if (font->lfw.lfWeight > FW_REGULAR)
        *style = FontStyleBold;
    else
        *style = FontStyleRegular;
    if (font->lfw.lfItalic)
        *style |= FontStyleItalic;
    if (font->lfw.lfUnderline)
        *style |= FontStyleUnderline;
    if (font->lfw.lfStrikeOut)
        *style |= FontStyleStrikeout;

    return Ok;
}

/*******************************************************************************
 * GdipGetFontUnit  [GDIPLUS.@]
 *
 * PARAMS
 *  font    [I] Font to retrieve from
 *  unit    [O] Return value
 *
 * RETURNS
 *  FAILURE: font or unit was NULL
 *  OK: otherwise
 */
GpStatus WINGDIPAPI GdipGetFontUnit(GpFont *font, Unit *unit)
{
    TRACE("(%p, %p)\n", font, unit);

    if (!(font && unit)) return InvalidParameter;

    *unit = font->unit;

    return Ok;
}

/*******************************************************************************
 * GdipGetLogFontA [GDIPLUS.@]
 */
GpStatus WINGDIPAPI GdipGetLogFontA(GpFont *font, GpGraphics *graphics,
    LOGFONTA *lfa)
{
    GpStatus status;
    LOGFONTW lfw;

    TRACE("(%p, %p, %p)\n", font, graphics, lfa);

    status = GdipGetLogFontW(font, graphics, &lfw);
    if(status != Ok)
        return status;

    memcpy(lfa, &lfw, FIELD_OFFSET(LOGFONTA,lfFaceName) );

    if(!WideCharToMultiByte(CP_ACP, 0, lfw.lfFaceName, -1, lfa->lfFaceName, LF_FACESIZE, NULL, NULL))
        return GenericError;

    return Ok;
}

/*******************************************************************************
 * GdipGetLogFontW [GDIPLUS.@]
 */
GpStatus WINGDIPAPI GdipGetLogFontW(GpFont *font, GpGraphics *graphics,
    LOGFONTW *lfw)
{
    TRACE("(%p, %p, %p)\n", font, graphics, lfw);

    /* FIXME: use graphics */
    if(!font || !graphics || !lfw)
        return InvalidParameter;

    *lfw = font->lfw;

    return Ok;
}

/*******************************************************************************
 * GdipCloneFont [GDIPLUS.@]
 */
GpStatus WINGDIPAPI GdipCloneFont(GpFont *font, GpFont **cloneFont)
{
    TRACE("(%p, %p)\n", font, cloneFont);

    if(!font || !cloneFont)
        return InvalidParameter;

    *cloneFont = GdipAlloc(sizeof(GpFont));
    if(!*cloneFont)    return OutOfMemory;

    **cloneFont = *font;

    return Ok;
}

/*******************************************************************************
 * GdipGetFontHeight [GDIPLUS.@]
 * PARAMS
 *  font        [I] Font to retrieve height from
 *  graphics    [I] The current graphics context
 *  height      [O] Resulting height
 * RETURNS
 *  SUCCESS: Ok
 *  FAILURE: Another element of GpStatus
 *
 * NOTES
 *  Forwards to GdipGetFontHeightGivenDPI
 */
GpStatus WINGDIPAPI GdipGetFontHeight(GDIPCONST GpFont *font,
        GDIPCONST GpGraphics *graphics, REAL *height)
{
    REAL dpi;
    GpStatus stat;

    TRACE("%p %p %p\n", font, graphics, height);

    stat = GdipGetDpiY((GpGraphics*)graphics, &dpi);

    if (stat == Ok)
        stat = GdipGetFontHeightGivenDPI(font, dpi, height);

    return stat;
}

/*******************************************************************************
 * GdipGetFontHeightGivenDPI [GDIPLUS.@]
 * PARAMS
 *  font        [I] Font to retrieve DPI from
 *  dpi         [I] DPI to assume
 *  height      [O] Return value
 *
 * RETURNS
 *  SUCCESS: Ok
 *  FAILURE: InvalidParameter if font or height is NULL
 *
 * NOTES
 *  According to MSDN, the result is (lineSpacing)*(fontSize / emHeight)*dpi
 *  (for anything other than unit Pixel)
 */
GpStatus WINGDIPAPI GdipGetFontHeightGivenDPI(GDIPCONST GpFont *font, REAL dpi, REAL *height)
{
    REAL font_height;

    TRACE("%p (%s), %f, %p\n", font,
            debugstr_w(font->lfw.lfFaceName), dpi, height);

    if (!(font && height)) return InvalidParameter;

    font_height = font->line_spacing * (font->emSize / font->height);

    switch (font->unit)
    {
        case UnitPixel:
        case UnitWorld:
            *height = font_height;
            break;
        case UnitPoint:
            *height = font_height * dpi * inch_per_point;
            break;
        case UnitInch:
            *height = font_height * dpi;
            break;
        case UnitDocument:
            *height = font_height * (dpi / 300.0);
            break;
        case UnitMillimeter:
            *height = font_height * (dpi / mm_per_inch);
            break;
        default:
            FIXME("Unhandled unit type: %d\n", font->unit);
            return NotImplemented;
    }

    return Ok;
}

/***********************************************************************
 * Borrowed from GDI32:
 *
 * Elf is really an ENUMLOGFONTEXW, and ntm is a NEWTEXTMETRICEXW.
 *     We have to use other types because of the FONTENUMPROCW definition.
 */
static INT CALLBACK is_font_installed_proc(const LOGFONTW *elf,
                            const TEXTMETRICW *ntm, DWORD type, LPARAM lParam)
{
    if (!ntm || type == RASTER_FONTTYPE)
    {
        return 1;
    }

    *(LOGFONTW *)lParam = *elf;

    return 0;
}

static BOOL find_installed_font(const WCHAR *name, OUTLINETEXTMETRICW *otm)
{
    LOGFONTW lf;
    HDC hdc = CreateCompatibleDC(0);
    BOOL ret = FALSE;

    if(!EnumFontFamiliesW(hdc, name, is_font_installed_proc, (LPARAM)&lf))
    {
        HFONT hfont;

        lf.lfHeight = -2048;
        hfont = CreateFontIndirectW(&lf);
        hfont = SelectObject(hdc, hfont);

        otm->otmSize = sizeof(*otm);
        if (GetOutlineTextMetricsW(hdc, otm->otmSize, otm))
            ret = TRUE;

        DeleteObject(SelectObject(hdc, hfont));
    }

    DeleteDC(hdc);
    return ret;
}

/*******************************************************************************
 * GdipCreateFontFamilyFromName [GDIPLUS.@]
 *
 * Creates a font family object based on a supplied name
 *
 * PARAMS
 *  name               [I] Name of the font
 *  fontCollection     [I] What font collection (if any) the font belongs to (may be NULL)
 *  FontFamily         [O] Pointer to the resulting FontFamily object
 *
 * RETURNS
 *  SUCCESS: Ok
 *  FAILURE: FamilyNotFound if the requested FontFamily does not exist on the system
 *  FAILURE: Invalid parameter if FontFamily or name is NULL
 *
 * NOTES
 *   If fontCollection is NULL then the object is not part of any collection
 *
 */

GpStatus WINGDIPAPI GdipCreateFontFamilyFromName(GDIPCONST WCHAR *name,
                                        GpFontCollection *fontCollection,
                                        GpFontFamily **FontFamily)
{
    GpFontFamily* ffamily;
    OUTLINETEXTMETRICW otm;

    TRACE("%s, %p %p\n", debugstr_w(name), fontCollection, FontFamily);

    if (!(name && FontFamily))
        return InvalidParameter;
    if (fontCollection)
        FIXME("No support for FontCollections yet!\n");

    if (!find_installed_font(name, &otm))
        return FontFamilyNotFound;

    ffamily = GdipAlloc(sizeof (GpFontFamily));
    if (!ffamily) return OutOfMemory;

    ffamily->otm = otm;
    lstrcpynW(ffamily->FamilyName, name, LF_FACESIZE);

    *FontFamily = ffamily;

    TRACE("<-- %p\n", ffamily);

    return Ok;
}

/*******************************************************************************
 * GdipCloneFontFamily [GDIPLUS.@]
 *
 * Creates a deep copy of a Font Family object
 *
 * PARAMS
 *  FontFamily          [I] Font to clone
 *  clonedFontFamily    [O] The resulting cloned font
 *
 * RETURNS
 *  SUCCESS: Ok
 */
GpStatus WINGDIPAPI GdipCloneFontFamily(GpFontFamily* FontFamily, GpFontFamily** clonedFontFamily)
{
    if (!(FontFamily && clonedFontFamily)) return InvalidParameter;

    TRACE("stub: %p (%s), %p\n", FontFamily,
            debugstr_w(FontFamily->FamilyName), clonedFontFamily);

    *clonedFontFamily = GdipAlloc(sizeof(GpFontFamily));
    if (!*clonedFontFamily) return OutOfMemory;

    (*clonedFontFamily)->otm = FontFamily->otm;
    lstrcpyW((*clonedFontFamily)->FamilyName, FontFamily->FamilyName);

    TRACE("<-- %p\n", *clonedFontFamily);

    return Ok;
}

/*******************************************************************************
 * GdipGetFamilyName [GDIPLUS.@]
 *
 * Returns the family name into name
 *
 * PARAMS
 *  *family     [I] Family to retrieve from
 *  *name       [O] WCHARS of the family name
 *  LANGID      [I] charset
 *
 * RETURNS
 *  SUCCESS: Ok
 *  FAILURE: InvalidParameter if family is NULL
 *
 * NOTES
 *   If name is a NULL ptr, then both XP and Vista will crash (so we do as well)
 */
GpStatus WINGDIPAPI GdipGetFamilyName (GDIPCONST GpFontFamily *family,
                                       WCHAR *name, LANGID language)
{
    static int lang_fixme;

    if (family == NULL)
         return InvalidParameter;

    TRACE("%p, %p, %d\n", family, name, language);

    if (language != LANG_NEUTRAL && !lang_fixme++)
        FIXME("No support for handling of multiple languages!\n");

    lstrcpynW (name, family->FamilyName, LF_FACESIZE);

    return Ok;
}


/*****************************************************************************
 * GdipDeleteFontFamily [GDIPLUS.@]
 *
 * Removes the specified FontFamily
 *
 * PARAMS
 *  *FontFamily         [I] The family to delete
 *
 * RETURNS
 *  SUCCESS: Ok
 *  FAILURE: InvalidParameter if FontFamily is NULL.
 *
 */
GpStatus WINGDIPAPI GdipDeleteFontFamily(GpFontFamily *FontFamily)
{
    if (!FontFamily)
        return InvalidParameter;
    TRACE("Deleting %p (%s)\n", FontFamily, debugstr_w(FontFamily->FamilyName));

    GdipFree (FontFamily);

    return Ok;
}

GpStatus WINGDIPAPI GdipGetCellAscent(GDIPCONST GpFontFamily *family,
        INT style, UINT16* CellAscent)
{
    if (!(family && CellAscent)) return InvalidParameter;

    *CellAscent = family->otm.otmTextMetrics.tmAscent;

    return Ok;
}

GpStatus WINGDIPAPI GdipGetCellDescent(GDIPCONST GpFontFamily *family,
        INT style, UINT16* CellDescent)
{
    TRACE("(%p, %d, %p)\n", family, style, CellDescent);

    if (!(family && CellDescent)) return InvalidParameter;

    *CellDescent = family->otm.otmTextMetrics.tmDescent;

    return Ok;
}

/*******************************************************************************
 * GdipGetEmHeight [GDIPLUS.@]
 *
 * Gets the height of the specified family in EmHeights
 *
 * PARAMS
 *  family      [I] Family to retrieve from
 *  style       [I] (optional) style
 *  EmHeight    [O] return value
 *
 * RETURNS
 *  SUCCESS: Ok
 *  FAILURE: InvalidParameter
 */
GpStatus WINGDIPAPI GdipGetEmHeight(GDIPCONST GpFontFamily *family, INT style, UINT16* EmHeight)
{
    if (!(family && EmHeight)) return InvalidParameter;

    TRACE("%p (%s), %d, %p\n", family, debugstr_w(family->FamilyName), style, EmHeight);

    *EmHeight = family->otm.otmEMSquare;

    return Ok;
}


/*******************************************************************************
 * GdipGetLineSpacing [GDIPLUS.@]
 *
 * Returns the line spacing in design units
 *
 * PARAMS
 *  family      [I] Family to retrieve from
 *  style       [I] (Optional) font style
 *  LineSpacing [O] Return value
 *
 * RETURNS
 *  SUCCESS: Ok
 *  FAILURE: InvalidParameter (family or LineSpacing was NULL)
 */
GpStatus WINGDIPAPI GdipGetLineSpacing(GDIPCONST GpFontFamily *family,
        INT style, UINT16* LineSpacing)
{
    TRACE("%p, %d, %p\n", family, style, LineSpacing);

    if (!(family && LineSpacing))
        return InvalidParameter;

    if (style) FIXME("ignoring style\n");

    *LineSpacing = family->otm.otmTextMetrics.tmAscent + family->otm.otmTextMetrics.tmDescent + family->otm.otmTextMetrics.tmExternalLeading;

    return Ok;
}

static INT CALLBACK font_has_style_proc(const LOGFONTW *elf,
                            const TEXTMETRICW *ntm, DWORD type, LPARAM lParam)
{
    INT fontstyle = FontStyleRegular;

    if (!ntm) return 1;

    if (ntm->tmWeight >= FW_BOLD) fontstyle |= FontStyleBold;
    if (ntm->tmItalic) fontstyle |= FontStyleItalic;
    if (ntm->tmUnderlined) fontstyle |= FontStyleUnderline;
    if (ntm->tmStruckOut) fontstyle |= FontStyleStrikeout;

    return (INT)lParam != fontstyle;
}

GpStatus WINGDIPAPI GdipIsStyleAvailable(GDIPCONST GpFontFamily* family,
        INT style, BOOL* IsStyleAvailable)
{
    HDC hdc;

    TRACE("%p %d %p\n", family, style, IsStyleAvailable);

    if (!(family && IsStyleAvailable))
        return InvalidParameter;

    *IsStyleAvailable = FALSE;

    hdc = GetDC(0);

    if(!EnumFontFamiliesW(hdc, family->FamilyName, font_has_style_proc, (LPARAM)style))
        *IsStyleAvailable = TRUE;

    ReleaseDC(0, hdc);

    return Ok;
}

/*****************************************************************************
 * GdipGetGenericFontFamilyMonospace [GDIPLUS.@]
 *
 * Obtains a serif family (Courier New on Windows)
 *
 * PARAMS
 *  **nativeFamily         [I] Where the font will be stored
 *
 * RETURNS
 *  InvalidParameter if nativeFamily is NULL.
 *  Ok otherwise.
 */
GpStatus WINGDIPAPI GdipGetGenericFontFamilyMonospace(GpFontFamily **nativeFamily)
{
    static const WCHAR CourierNew[] = {'C','o','u','r','i','e','r',' ','N','e','w','\0'};
    static const WCHAR LiberationMono[] = {'L','i','b','e','r','a','t','i','o','n',' ','M','o','n','o','\0'};
    GpStatus stat;

    if (nativeFamily == NULL) return InvalidParameter;

    stat = GdipCreateFontFamilyFromName(CourierNew, NULL, nativeFamily);

    if (stat == FontFamilyNotFound)
        stat = GdipCreateFontFamilyFromName(LiberationMono, NULL, nativeFamily);

    if (stat == FontFamilyNotFound)
        ERR("Missing 'Courier New' font\n");

    return stat;
}

/*****************************************************************************
 * GdipGetGenericFontFamilySerif [GDIPLUS.@]
 *
 * Obtains a serif family (Times New Roman on Windows)
 *
 * PARAMS
 *  **nativeFamily         [I] Where the font will be stored
 *
 * RETURNS
 *  InvalidParameter if nativeFamily is NULL.
 *  Ok otherwise.
 */
GpStatus WINGDIPAPI GdipGetGenericFontFamilySerif(GpFontFamily **nativeFamily)
{
    static const WCHAR TimesNewRoman[] = {'T','i','m','e','s',' ','N','e','w',' ','R','o','m','a','n','\0'};
    static const WCHAR LiberationSerif[] = {'L','i','b','e','r','a','t','i','o','n',' ','S','e','r','i','f','\0'};
    GpStatus stat;

    TRACE("(%p)\n", nativeFamily);

    if (nativeFamily == NULL) return InvalidParameter;

    stat = GdipCreateFontFamilyFromName(TimesNewRoman, NULL, nativeFamily);

    if (stat == FontFamilyNotFound)
        stat = GdipCreateFontFamilyFromName(LiberationSerif, NULL, nativeFamily);

    if (stat == FontFamilyNotFound)
        ERR("Missing 'Times New Roman' font\n");

    return stat;
}

/*****************************************************************************
 * GdipGetGenericFontFamilySansSerif [GDIPLUS.@]
 *
 * Obtains a serif family (Microsoft Sans Serif on Windows)
 *
 * PARAMS
 *  **nativeFamily         [I] Where the font will be stored
 *
 * RETURNS
 *  InvalidParameter if nativeFamily is NULL.
 *  Ok otherwise.
 */
GpStatus WINGDIPAPI GdipGetGenericFontFamilySansSerif(GpFontFamily **nativeFamily)
{
    GpStatus stat;
    static const WCHAR MicrosoftSansSerif[] = {'M','i','c','r','o','s','o','f','t',' ','S','a','n','s',' ','S','e','r','i','f','\0'};
    static const WCHAR Tahoma[] = {'T','a','h','o','m','a','\0'};

    TRACE("(%p)\n", nativeFamily);

    if (nativeFamily == NULL) return InvalidParameter;

    stat = GdipCreateFontFamilyFromName(MicrosoftSansSerif, NULL, nativeFamily);

    if (stat == FontFamilyNotFound)
        /* FIXME: Microsoft Sans Serif is not installed on Wine. */
        stat = GdipCreateFontFamilyFromName(Tahoma, NULL, nativeFamily);

    return stat;
}

/*****************************************************************************
 * GdipGetGenericFontFamilySansSerif [GDIPLUS.@]
 */
GpStatus WINGDIPAPI GdipNewPrivateFontCollection(GpFontCollection** fontCollection)
{
    TRACE("%p\n", fontCollection);

    if (!fontCollection)
        return InvalidParameter;

    *fontCollection = GdipAlloc(sizeof(GpFontCollection));
    if (!*fontCollection) return OutOfMemory;

    (*fontCollection)->FontFamilies = NULL;
    (*fontCollection)->count = 0;
    (*fontCollection)->allocated = 0;

    TRACE("<-- %p\n", *fontCollection);

    return Ok;
}

/*****************************************************************************
 * GdipDeletePrivateFontCollection [GDIPLUS.@]
 */
GpStatus WINGDIPAPI GdipDeletePrivateFontCollection(GpFontCollection **fontCollection)
{
    INT i;

    TRACE("%p\n", fontCollection);

    if (!fontCollection)
        return InvalidParameter;

    for (i = 0; i < (*fontCollection)->count; i++) GdipFree((*fontCollection)->FontFamilies[i]);
    GdipFree(*fontCollection);

    return Ok;
}

/*****************************************************************************
 * GdipPrivateAddFontFile [GDIPLUS.@]
 */
GpStatus WINGDIPAPI GdipPrivateAddFontFile(GpFontCollection* fontCollection,
        GDIPCONST WCHAR* filename)
{
    FIXME("stub: %p, %s\n", fontCollection, debugstr_w(filename));

    if (!(fontCollection && filename))
        return InvalidParameter;

    return NotImplemented;
}

/* Copied from msi/font.c */

typedef struct _tagTT_OFFSET_TABLE {
    USHORT uMajorVersion;
    USHORT uMinorVersion;
    USHORT uNumOfTables;
    USHORT uSearchRange;
    USHORT uEntrySelector;
    USHORT uRangeShift;
} TT_OFFSET_TABLE;

typedef struct _tagTT_TABLE_DIRECTORY {
    char szTag[4]; /* table name */
    ULONG uCheckSum; /* Check sum */
    ULONG uOffset; /* Offset from beginning of file */
    ULONG uLength; /* length of the table in bytes */
} TT_TABLE_DIRECTORY;

typedef struct _tagTT_NAME_TABLE_HEADER {
    USHORT uFSelector; /* format selector. Always 0 */
    USHORT uNRCount; /* Name Records count */
    USHORT uStorageOffset; /* Offset for strings storage,
                            * from start of the table */
} TT_NAME_TABLE_HEADER;

#define NAME_ID_FULL_FONT_NAME  4
#define NAME_ID_VERSION         5

typedef struct _tagTT_NAME_RECORD {
    USHORT uPlatformID;
    USHORT uEncodingID;
    USHORT uLanguageID;
    USHORT uNameID;
    USHORT uStringLength;
    USHORT uStringOffset; /* from start of storage area */
} TT_NAME_RECORD;

#define SWAPWORD(x) MAKEWORD(HIBYTE(x), LOBYTE(x))
#define SWAPLONG(x) MAKELONG(SWAPWORD(HIWORD(x)), SWAPWORD(LOWORD(x)))

/*
 * Code based off of code located here
 * http://www.codeproject.com/gdi/fontnamefromfile.asp
 */
static WCHAR *load_ttf_name_id( const char *mem, DWORD_PTR size, DWORD id, WCHAR *ret, DWORD len )
{
    const TT_TABLE_DIRECTORY *tblDir;
    TT_OFFSET_TABLE ttOffsetTable;
    TT_NAME_TABLE_HEADER ttNTHeader;
    TT_NAME_RECORD ttRecord;
    DWORD ofs, pos;
    int i;

    if (sizeof(TT_OFFSET_TABLE) > size)
        return NULL;
    ttOffsetTable = *(TT_OFFSET_TABLE*)mem;
    ttOffsetTable.uNumOfTables = SWAPWORD(ttOffsetTable.uNumOfTables);
    ttOffsetTable.uMajorVersion = SWAPWORD(ttOffsetTable.uMajorVersion);
    ttOffsetTable.uMinorVersion = SWAPWORD(ttOffsetTable.uMinorVersion);

    if (ttOffsetTable.uMajorVersion != 1 || ttOffsetTable.uMinorVersion != 0)
        return NULL;

    pos = sizeof(ttOffsetTable);
    for (i = 0; i < ttOffsetTable.uNumOfTables; i++)
    {
        tblDir = (const TT_TABLE_DIRECTORY*)&mem[pos];
        pos += sizeof(*tblDir);
        if (memcmp(tblDir->szTag,"name",4)==0)
        {
            ofs = SWAPLONG(tblDir->uOffset);
            break;
        }
    }
    if (i >= ttOffsetTable.uNumOfTables)
        return NULL;

    pos = ofs + sizeof(ttNTHeader);
    if (pos > size)
        return NULL;
    ttNTHeader = *(TT_NAME_TABLE_HEADER*)&mem[ofs];
    ttNTHeader.uNRCount = SWAPWORD(ttNTHeader.uNRCount);
    ttNTHeader.uStorageOffset = SWAPWORD(ttNTHeader.uStorageOffset);
    for(i=0; i<ttNTHeader.uNRCount; i++)
    {
        ttRecord = *(TT_NAME_RECORD*)&mem[pos];
        pos += sizeof(ttRecord);
        if (pos > size)
            return NULL;

        ttRecord.uNameID = SWAPWORD(ttRecord.uNameID);
        if (ttRecord.uNameID == id)
        {
            const char *buf;

            ttRecord.uStringLength = SWAPWORD(ttRecord.uStringLength);
            ttRecord.uStringOffset = SWAPWORD(ttRecord.uStringOffset);
            if (ofs + ttRecord.uStringOffset + ttNTHeader.uStorageOffset + ttRecord.uStringLength > size)
                return NULL;
            buf = mem + ofs + ttRecord.uStringOffset + ttNTHeader.uStorageOffset;
            len = MultiByteToWideChar(CP_ACP, 0, buf, ttRecord.uStringLength, ret, len-1);
            ret[len] = 0;
            return ret;
        }
    }
    return NULL;
}

static INT CALLBACK add_font_proc(const LOGFONTW *lfw, const TEXTMETRICW *ntm, DWORD type, LPARAM lParam);

/*****************************************************************************
 * GdipPrivateAddMemoryFont [GDIPLUS.@]
 */
GpStatus WINGDIPAPI GdipPrivateAddMemoryFont(GpFontCollection* fontCollection,
        GDIPCONST void* memory, INT length)
{
    WCHAR buf[32], *name;
    DWORD count = 0;
    HANDLE font;
    TRACE("%p, %p, %d\n", fontCollection, memory, length);

    if (!fontCollection || !memory || !length)
        return InvalidParameter;

    name = load_ttf_name_id(memory, length, NAME_ID_FULL_FONT_NAME, buf, sizeof(buf)/sizeof(*buf));
    if (!name)
        return OutOfMemory;

    font = AddFontMemResourceEx((void*)memory, length, NULL, &count);
    TRACE("%s: %p/%u\n", debugstr_w(name), font, count);
    if (!font || !count)
        return InvalidParameter;

    if (count)
    {
        HDC hdc;
        LOGFONTW lfw;

        hdc = GetDC(0);

        lfw.lfCharSet = DEFAULT_CHARSET;
        lstrcpyW(lfw.lfFaceName, name);
        lfw.lfPitchAndFamily = 0;

        if (!EnumFontFamiliesExW(hdc, &lfw, add_font_proc, (LPARAM)fontCollection, 0))
        {
            ReleaseDC(0, hdc);
            return OutOfMemory;
        }

        ReleaseDC(0, hdc);
    }
    return Ok;
}

/*****************************************************************************
 * GdipGetFontCollectionFamilyCount [GDIPLUS.@]
 */
GpStatus WINGDIPAPI GdipGetFontCollectionFamilyCount(
        GpFontCollection* fontCollection, INT* numFound)
{
    TRACE("%p, %p\n", fontCollection, numFound);

    if (!(fontCollection && numFound))
        return InvalidParameter;

    *numFound = fontCollection->count;
    return Ok;
}

/*****************************************************************************
 * GdipGetFontCollectionFamilyList [GDIPLUS.@]
 */
GpStatus WINGDIPAPI GdipGetFontCollectionFamilyList(
        GpFontCollection* fontCollection, INT numSought,
        GpFontFamily* gpfamilies[], INT* numFound)
{
    INT i;
    GpStatus stat=Ok;

    TRACE("%p, %d, %p, %p\n", fontCollection, numSought, gpfamilies, numFound);

    if (!(fontCollection && gpfamilies && numFound))
        return InvalidParameter;

    memset(gpfamilies, 0, sizeof(*gpfamilies) * numSought);

    for (i = 0; i < numSought && i < fontCollection->count && stat == Ok; i++)
    {
        stat = GdipCloneFontFamily(fontCollection->FontFamilies[i], &gpfamilies[i]);
    }

    if (stat == Ok)
        *numFound = i;
    else
    {
        int numToFree=i;
        for (i=0; i<numToFree; i++)
        {
            GdipDeleteFontFamily(gpfamilies[i]);
            gpfamilies[i] = NULL;
        }
    }

    return stat;
}

void free_installed_fonts(void)
{
    while (installedFontCollection.count)
        GdipDeleteFontFamily(installedFontCollection.FontFamilies[--installedFontCollection.count]);
    HeapFree(GetProcessHeap(), 0, installedFontCollection.FontFamilies);
    installedFontCollection.FontFamilies = NULL;
    installedFontCollection.allocated = 0;
}

static INT CALLBACK add_font_proc(const LOGFONTW *lfw, const TEXTMETRICW *ntm,
        DWORD type, LPARAM lParam)
{
    GpFontCollection* fonts = (GpFontCollection*)lParam;
    int i;

    if (type == RASTER_FONTTYPE)
        return 1;

    /* skip duplicates */
    for (i=0; i<fonts->count; i++)
        if (strcmpiW(lfw->lfFaceName, fonts->FontFamilies[i]->FamilyName) == 0)
            return 1;

    if (fonts->allocated == fonts->count)
    {
        INT new_alloc_count = fonts->allocated+50;
        GpFontFamily** new_family_list = HeapAlloc(GetProcessHeap(), 0, new_alloc_count*sizeof(void*));

        if (!new_family_list)
            return 0;

        memcpy(new_family_list, fonts->FontFamilies, fonts->count*sizeof(void*));
        HeapFree(GetProcessHeap(), 0, fonts->FontFamilies);
        fonts->FontFamilies = new_family_list;
        fonts->allocated = new_alloc_count;
    }

    if (GdipCreateFontFamilyFromName(lfw->lfFaceName, NULL, &fonts->FontFamilies[fonts->count]) == Ok)
        fonts->count++;
    else
        return 0;

    return 1;
}

GpStatus WINGDIPAPI GdipNewInstalledFontCollection(
        GpFontCollection** fontCollection)
{
    TRACE("(%p)\n",fontCollection);

    if (!fontCollection)
        return InvalidParameter;

    if (installedFontCollection.count == 0)
    {
        HDC hdc;
        LOGFONTW lfw;

        hdc = GetDC(0);

        lfw.lfCharSet = DEFAULT_CHARSET;
        lfw.lfFaceName[0] = 0;
        lfw.lfPitchAndFamily = 0;

        if (!EnumFontFamiliesExW(hdc, &lfw, add_font_proc, (LPARAM)&installedFontCollection, 0))
        {
            free_installed_fonts();
            ReleaseDC(0, hdc);
            return OutOfMemory;
        }

        ReleaseDC(0, hdc);
    }

    *fontCollection = &installedFontCollection;

    return Ok;
}