From 2d0c10e27f468500133312e9f5edae6cc68704d7 Mon Sep 17 00:00:00 2001 From: JunsuChoi Date: Fri, 2 Feb 2024 19:25:53 +0900 Subject: [PATCH] examples/picture/svg: Add PictureSvg example This is the simplest example using tvg::Picture's SVG loader. --- src/examples/PictureSvg.cpp | 157 ++++++++++++++++++++++++++++++++++++ src/examples/meson.build | 1 + 2 files changed, 158 insertions(+) create mode 100644 src/examples/PictureSvg.cpp diff --git a/src/examples/PictureSvg.cpp b/src/examples/PictureSvg.cpp new file mode 100644 index 00000000..738e12a0 --- /dev/null +++ b/src/examples/PictureSvg.cpp @@ -0,0 +1,157 @@ +/* + * Copyright (c) 2024 the ThorVG project. All rights reserved. + + * 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 +#include "Common.h" + +/************************************************************************/ +/* Drawing Commands */ +/************************************************************************/ + +void tvgDrawCmds(tvg::Canvas* canvas) +{ + if (!canvas) return; + + //Background + auto bg = tvg::Shape::gen(); + bg->appendRect(0, 0, WIDTH, HEIGHT); //x, y, w, h + bg->fill(255, 255, 255); //r, g, b + canvas->push(std::move(bg)); + + char buf[PATH_MAX]; + snprintf(buf, sizeof(buf), EXAMPLE_DIR"/logo.svg"); + + auto picture = tvg::Picture::gen(); + tvg::Result ret = picture->load(buf); + if (ret == tvg::Result::InvalidArguments) { + cout << "Path is invalid." << endl; + return; + } else if (ret == tvg::Result::Unknown) { + cout << "Unknown error occurs." << endl; + return; + } + + picture->size(WIDTH, HEIGHT); + if (canvas->push(std::move(picture)) != tvg::Result::Success) return; + cout << "SVG: " << buf << endl; +} + + +/************************************************************************/ +/* Sw Engine Test Code */ +/************************************************************************/ + +static unique_ptr swCanvas; + +void tvgSwTest(uint32_t* buffer) +{ + //Create a Canvas + swCanvas = tvg::SwCanvas::gen(); + swCanvas->target(buffer, WIDTH, WIDTH, HEIGHT, tvg::SwCanvas::ARGB8888); + + /* Push the shape into the Canvas drawing list + When this shape is into the canvas list, the shape could update & prepare + internal data asynchronously for coming rendering. + Canvas keeps this shape node unless user call canvas->clear() */ + tvgDrawCmds(swCanvas.get()); +} + +void drawSwView(void* data, Eo* obj) +{ + if (swCanvas->draw() == tvg::Result::Success) { + swCanvas->sync(); + } +} + + +/************************************************************************/ +/* GL Engine Test Code */ +/************************************************************************/ + +static unique_ptr glCanvas; + +void initGLview(Evas_Object *obj) +{ + static constexpr auto BPP = 4; + + //Create a Canvas + glCanvas = tvg::GlCanvas::gen(); + glCanvas->target(nullptr, WIDTH * BPP, WIDTH, HEIGHT); + + /* Push the shape into the Canvas drawing list + When this shape is into the canvas list, the shape could update & prepare + internal data asynchronously for coming rendering. + Canvas keeps this shape node unless user call canvas->clear() */ + tvgDrawCmds(glCanvas.get()); +} + +void drawGLview(Evas_Object *obj) +{ + auto gl = elm_glview_gl_api_get(obj); + gl->glClearColor(0.0f, 0.0f, 0.0f, 1.0f); + gl->glClear(GL_COLOR_BUFFER_BIT); + + if (glCanvas->draw() == tvg::Result::Success) { + glCanvas->sync(); + } +} + + +/************************************************************************/ +/* Main Code */ +/************************************************************************/ + +int main(int argc, char **argv) +{ + auto tvgEngine = tvg::CanvasEngine::Sw; + + if (argc > 1) { + if (!strcmp(argv[1], "gl")) tvgEngine = tvg::CanvasEngine::Gl; + } + + //Threads Count + auto threads = std::thread::hardware_concurrency(); + if (threads > 0) --threads; //Allow the designated main thread capacity + + //Initialize ThorVG Engine + if (tvg::Initializer::init(threads) == tvg::Result::Success) { + + elm_init(argc, argv); + + if (tvgEngine == tvg::CanvasEngine::Sw) { + createSwView(); + } else { + createGlView(); + } + + elm_run(); + elm_shutdown(); + + //Terminate ThorVG Engine + tvg::Initializer::term(); + + + } else { + cout << "engine is not supported" << endl; + } + return 0; +} diff --git a/src/examples/meson.build b/src/examples/meson.build index 6ace2f30..044dbda3 100644 --- a/src/examples/meson.build +++ b/src/examples/meson.build @@ -38,6 +38,7 @@ source_file = [ 'PictureJpg.cpp', 'PicturePng.cpp', 'PictureRaw.cpp', + 'PictureSvg.cpp', 'PictureTvg.cpp', 'PictureWebp.cpp', 'RadialGradient.cpp',