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/**
* @file llfontfreetypesvg.h
* @brief Freetype font library SVG glyph rendering
*
* $LicenseInfo:firstyear=2002&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2010, Linden Research, Inc.
*
* 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;
* version 2.1 of the License only.
*
* 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 Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
#pragma once
#include <ft2build.h>
#include FT_TYPES_H
#include FT_MODULE_H
#include FT_OTSVG_H
// See https://freetype.org/freetype2/docs/reference/ft2-svg_fonts.html
class LLFontFreeTypeSvgRenderer
{
public:
// Called when the very first OT-SVG glyph is rendered (across the entire lifetime of our FT_Library object)
static FT_Error OnInit(FT_Pointer* state);
// Called when the ot-svg module is being freed (but only called if the init hook was called previously)
static void OnFree(FT_Pointer* state);
// Called to preset the glyph slot, twice per glyph:
// - when FT_Load_Glyph needs to preset the glyph slot (with cache == false)
// - right before the svg module calls the render callback hook. (with cache == true)
static FT_Error OnPresetGlypthSlot(FT_GlyphSlot glyph_slot, FT_Bool cache, FT_Pointer* state);
// Called to render an OT-SVG glyph (right after the preset hook OnPresetGlypthSlot was called with cache set to true)
static FT_Error OnRender(FT_GlyphSlot glyph_slot, FT_Pointer* state);
// Called to deallocate our per glyph slot data
static void OnDataFinalizer(void* objectp);
};
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