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https://github.com/thorvg/thorvg.git
synced 2025-06-21 15:32:49 +00:00
16e39ee81b
This patch introduces tvg loader module for loading .tvg binary files. This allows to load and reuse pregenerated scene. tvg file format: .tvg is a binary file format designed for saving/restoring the scene content. It allows to save scenes and reuse them in other apps or to restore state of the application. @Example: auto picture = tvg::Picture::gen(); picture->load(EXAMPLE_DIR"/tvg_file.tvg"); canvas->push(move(picture)); @API Additions: Result paint(std::unique_ptr<Paint> paint) noexcept; @Issue: Issue ticket is #375.
125 lines
2.7 KiB
C++
125 lines
2.7 KiB
C++
/*
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* Copyright (c) 2021 Samsung Electronics Co., Ltd. All rights reserved.
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <fstream>
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#include <string.h>
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#include "tvgLoaderMgr.h"
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#include "tvgTvgLoader.h"
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#include "tvgTvgLoadParser.h"
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TvgLoader::~TvgLoader()
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{
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close();
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}
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void TvgLoader::clearBuffer()
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{
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size = 0;
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free(buffer);
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buffer = nullptr;
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pointer = nullptr;
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}
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bool TvgLoader::open(const string &path)
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{
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ifstream f;
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f.open(path, ifstream::in | ifstream::binary | ifstream::ate);
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if (!f.is_open())
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{
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#ifdef THORVG_LOG_ENABLED
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printf("TVG_LOADER: Failed to open file\n");
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#endif
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return false;
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}
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size = f.tellg();
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f.seekg(0, ifstream::beg);
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buffer = (char*) malloc(size);
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if (!buffer)
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{
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size = 0;
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f.close();
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#ifdef THORVG_LOG_ENABLED
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printf("TVG_LOADER: Failed to alloc buffer\n");
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#endif
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return false;
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}
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if (!f.read(buffer, size))
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{
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clearBuffer();
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f.close();
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return false;
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}
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f.close();
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pointer = buffer;
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return true;
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}
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bool TvgLoader::open(const char *data, uint32_t size)
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{
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pointer = data;
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size = size;
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return true;
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}
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bool TvgLoader::read()
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{
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if (!pointer || size == 0) return false;
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TaskScheduler::request(this);
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return true;
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}
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bool TvgLoader::close()
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{
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this->done();
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clearBuffer();
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return true;
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}
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void TvgLoader::run(unsigned tid)
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{
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if (root) root.reset();
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root = tvgParseTvgFile(pointer, size);
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if (!root)
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{
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#ifdef THORVG_LOG_ENABLED
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printf("TVG_LOADER: File parsing error\n");
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#endif
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clearBuffer();
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}
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}
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unique_ptr<Scene> TvgLoader::scene()
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{
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this->done();
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if (root) return move(root);
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return nullptr;
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}
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