RmlUi/Source/Core/FontEngineDefault/FontFace.cpp

/*
 * This source file is part of RmlUi, the HTML/CSS Interface Middleware
 *
 * For the latest information, see http://github.com/mikke89/RmlUi
 *
 * Copyright (c) 2008-2010 CodePoint Ltd, Shift Technology Ltd
 * Copyright (c) 2019-2023 The RmlUi Team, and contributors
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 *
 */

#include "FontFace.h"
#include "../../../Include/RmlUi/Core/Log.h"
#include "FontFaceHandleDefault.h"
#include "FreeTypeInterface.h"

namespace Rml {

FontFace::FontFace(FontFaceHandleFreetype _face, Style::FontStyle _style, Style::FontWeight _weight)
{
	style = _style;
	weight = _weight;
	face = _face;
}

FontFace::~FontFace()
{
	if (face)
		FreeType::ReleaseFace(face);
}

Style::FontStyle FontFace::GetStyle() const
{
	return style;
}

Style::FontWeight FontFace::GetWeight() const
{
	return weight;
}

FontFaceHandleDefault* FontFace::GetHandle(int size, bool load_default_glyphs)
{
	auto it = handles.find(size);
	if (it != handles.end())
		return it->second.get();

	// See if this face has been released.
	if (!face)
	{
		Log::Message(Log::LT_WARNING, "Font face has been released, unable to generate new handle.");
		return nullptr;
	}

	// Construct and initialise the new handle.
	auto handle = MakeUnique<FontFaceHandleDefault>();
	if (!handle->Initialize(face, size, load_default_glyphs))
	{
		handles[size] = nullptr;
		return nullptr;
	}

	FontFaceHandleDefault* result = handle.get();

	// Save the new handle to the font face
	handles[size] = std::move(handle);

	return result;
}

void FontFace::OnBeginFrame()
{
	for (auto iterator = handles.begin(); iterator != handles.end(); ++iterator)
		iterator->second->PurgeUnusedGlyphs();
}

void FontFace::ReleaseFontResources()
{
	HandleMap().swap(handles);
}

} // namespace Rml