/*
 * Copyright 2012 Nikolay Sivov for CodeWeavers
 *
 * 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 "wine/debug.h"
#include "wine/unicode.h"

static inline void *heap_alloc(size_t len)
{
    return HeapAlloc(GetProcessHeap(), 0, len);
}

static inline void *heap_alloc_zero(size_t len)
{
    return HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, len);
}

static inline void *heap_realloc(void *mem, size_t len)
{
    return HeapReAlloc(GetProcessHeap(), 0, mem, len);
}

static inline void *heap_realloc_zero(void *mem, size_t len)
{
    return HeapReAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, mem, len);
}

static inline BOOL heap_free(void *mem)
{
    return HeapFree(GetProcessHeap(), 0, mem);
}

static inline LPWSTR heap_strdupW(const WCHAR *str)
{
    LPWSTR ret = NULL;

    if(str) {
        DWORD size;

        size = (strlenW(str)+1)*sizeof(WCHAR);
        ret = heap_alloc(size);
        if(ret)
            memcpy(ret, str, size);
    }

    return ret;
}

static inline LPWSTR heap_strdupnW(const WCHAR *str, UINT32 len)
{
    WCHAR *ret = NULL;

    if (len)
    {
        ret = heap_alloc((len+1)*sizeof(WCHAR));
        if(ret)
        {
            memcpy(ret, str, len*sizeof(WCHAR));
            ret[len] = 0;
        }
    }

    return ret;
}

static inline const char *debugstr_range(const DWRITE_TEXT_RANGE *range)
{
    return wine_dbg_sprintf("%u:%u", range->startPosition, range->length);
}

extern HRESULT create_font_from_logfont(const LOGFONTW*, IDWriteFont**) DECLSPEC_HIDDEN;
extern HRESULT convert_fontface_to_logfont(IDWriteFontFace*, LOGFONTW*) DECLSPEC_HIDDEN;
extern HRESULT create_textformat(const WCHAR*,IDWriteFontCollection*,DWRITE_FONT_WEIGHT,DWRITE_FONT_STYLE,DWRITE_FONT_STRETCH,
                                 FLOAT,const WCHAR*,IDWriteTextFormat**) DECLSPEC_HIDDEN;
extern HRESULT create_textlayout(const WCHAR*,UINT32,IDWriteTextFormat*,FLOAT,FLOAT,IDWriteTextLayout**) DECLSPEC_HIDDEN;
extern HRESULT create_trimmingsign(IDWriteInlineObject**) DECLSPEC_HIDDEN;
extern HRESULT get_gdiinterop(IDWriteGdiInterop**) DECLSPEC_HIDDEN;
extern HRESULT create_localizedstrings(IDWriteLocalizedStrings**) DECLSPEC_HIDDEN;
extern HRESULT add_localizedstring(IDWriteLocalizedStrings*,const WCHAR*,const WCHAR*) DECLSPEC_HIDDEN;
extern HRESULT clone_localizedstring(IDWriteLocalizedStrings *iface, IDWriteLocalizedStrings **strings) DECLSPEC_HIDDEN;
extern HRESULT get_system_fontcollection(IDWriteFontCollection**) DECLSPEC_HIDDEN;
extern HRESULT get_textanalyzer(IDWriteTextAnalyzer**) DECLSPEC_HIDDEN;
extern HRESULT create_font_file(IDWriteFontFileLoader *loader, const void *reference_key, UINT32 key_size, IDWriteFontFile **font_file) DECLSPEC_HIDDEN;
extern HRESULT create_localfontfileloader(IDWriteLocalFontFileLoader** iface) DECLSPEC_HIDDEN;
extern HRESULT font_create_fontface(IDWriteFactory *iface, DWRITE_FONT_FACE_TYPE facetype, UINT32 files_number, IDWriteFontFile* const* font_files, UINT32 index, DWRITE_FONT_SIMULATIONS sim_flags, IDWriteFontFace **font_face) DECLSPEC_HIDDEN;

/* Opentype font table functions */
extern HRESULT analyze_opentype_font(const void* font_data, UINT32* font_count, DWRITE_FONT_FILE_TYPE *file_type, DWRITE_FONT_FACE_TYPE *face_type, BOOL *supported) DECLSPEC_HIDDEN;
extern HRESULT find_font_table(IDWriteFontFileStream *stream, UINT32 font_index, UINT32 tag, const void** table_data, void** table_context, UINT32 *table_size, BOOL* found) DECLSPEC_HIDDEN;
extern VOID OpenType_CMAP_GetGlyphIndex(LPVOID data, DWORD utf32c, LPWORD pgi, DWORD flags) DECLSPEC_HIDDEN;
extern VOID get_font_properties(LPCVOID os2, LPCVOID head, LPCVOID post, DWRITE_FONT_METRICS *metrics, DWRITE_FONT_STRETCH *stretch, DWRITE_FONT_WEIGHT *weight, DWRITE_FONT_STYLE *style) DECLSPEC_HIDDEN;