/*
 * Copyright 2001-2016, Haiku.
 * Distributed under the terms of the MIT License.
 *
 * Authors:
 *              DarkWyrm <bpmagic@columbus.rr.com>
 *              Axel Dörfler, axeld@pinc-software.de
 */


/*!     Manages user font families and styles */


#include "AppFontManager.h"

#include <new>
#include <stdint.h>

#include <Debug.h>
#include <Entry.h>

#include "FontFamily.h"


//#define TRACE_FONT_MANAGER
#ifdef TRACE_FONT_MANAGER
#       define FTRACE(x) debug_printf x
#else
#       define FTRACE(x) ;
#endif


extern FT_Library gFreeTypeLibrary;


//      #pragma mark -


/*! Sets high id number to avoid collisions with GlobalFontManager
        The result of a collision would be that the global font is selected
        rather than the application font.
*/
AppFontManager::AppFontManager()
        : BLocker("AppFontManager")
{
        fNextID = UINT16_MAX;
}


/*!     \brief Adds the FontFamily/FontStyle that is represented by this path.
*/
status_t
AppFontManager::AddUserFontFromFile(const char* path, uint16 index, uint16 instance,
        uint16& familyID, uint16& styleID)
{
        ASSERT(IsLocked());

        BEntry entry;
        status_t status = entry.SetTo(path);
        if (status != B_OK)
                return status;

        node_ref nodeRef;
        status = entry.GetNodeRef(&nodeRef);
        if (status < B_OK)
                return status;

        FT_Face face;
        FT_Error error = FT_New_Face(gFreeTypeLibrary, path, index | (instance << 16), &face);
        if (error != 0)
                return B_ERROR;

        status = _AddFont(face, nodeRef, path, familyID, styleID);
        return status;
}


/*!     \brief Adds the FontFamily/FontStyle that is represented by the area in memory.
*/
status_t
AppFontManager::AddUserFontFromMemory(const FT_Byte* fontAddress, size_t size, uint16 index,
        uint16 instance, uint16& familyID, uint16& styleID)
{
        ASSERT(IsLocked());

        node_ref nodeRef;
        status_t status;

        FT_Face face;
        FT_Error error = FT_New_Memory_Face(gFreeTypeLibrary, fontAddress, size,
                index | (instance << 16), &face);
        if (error != 0)
                return B_ERROR;

        status = _AddFont(face, nodeRef, "", familyID, styleID);

        return status;
}


/*!     \brief Removes the FontFamily/FontStyle from the font manager.
*/
status_t
AppFontManager::RemoveUserFont(uint16 familyID, uint16 styleID)
{
        return _RemoveFont(familyID, styleID) != NULL ? B_OK : B_BAD_VALUE;
}


uint16
AppFontManager::_NextID()
{
        return fNextID--;
}