From 0d3d242f0c20467faac4e4ffd1dae3cfaf52f466 Mon Sep 17 00:00:00 2001 From: Mira Grudzinska Date: Sun, 16 Jun 2024 23:23:30 +0200 Subject: [PATCH] examples: add FillSpread example @Issue: https://github.com/thorvg/thorvg/issues/2124 --- examples/FillSpread.cpp | 230 ++++++++++++++++++++++++++++++++++++++++ examples/meson.build | 1 + 2 files changed, 231 insertions(+) create mode 100644 examples/FillSpread.cpp diff --git a/examples/FillSpread.cpp b/examples/FillSpread.cpp new file mode 100644 index 00000000..e64efa9f --- /dev/null +++ b/examples/FillSpread.cpp @@ -0,0 +1,230 @@ +/* + * 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 "Common.h" + +/************************************************************************/ +/* Drawing Commands */ +/************************************************************************/ + +void tvgDrawCmds(tvg::Canvas* canvas) +{ + if (!canvas) return; + + const int colorCnt = 4; + tvg::Fill::ColorStop colorStops[colorCnt]; + colorStops[0] = {0.0f, 127, 39, 255, 255}; + colorStops[1] = {0.33f, 159, 112, 253, 255}; + colorStops[2] = {0.66f, 253, 191, 96, 255}; + colorStops[3] = {1.0f, 255, 137, 17, 255}; + + //Radial grad + { + float x1, y1 = 80.0f, r = 120.0f; + + //Pad + x1 = 20.0f; + auto shape1 = tvg::Shape::gen(); + shape1->appendRect(x1, y1, 2.0f * r, 2.0f * r); + + auto fill1 = tvg::RadialGradient::gen(); + fill1->radial(x1 + r, y1 + r, 40.0f); + fill1->colorStops(colorStops, colorCnt); + fill1->spread(tvg::FillSpread::Pad); + shape1->fill(std::move(fill1)); + + if (canvas->push(std::move(shape1)) != tvg::Result::Success) return; + + //Reflect + x1 = 280.0f; + auto shape2 = tvg::Shape::gen(); + shape2->appendRect(x1, y1, 2.0f * r, 2.0f * r); + + auto fill2 = tvg::RadialGradient::gen(); + fill2->radial(x1 + r, y1 + r, 40.0f); + fill2->colorStops(colorStops, colorCnt); + fill2->spread(tvg::FillSpread::Reflect); + shape2->fill(std::move(fill2)); + + if (canvas->push(std::move(shape2)) != tvg::Result::Success) return; + + //Repeat + x1 = 540.0f; + auto shape3 = tvg::Shape::gen(); + shape3->appendRect(x1, y1, 2.0f * r, 2.0f * r); + + auto fill3 = tvg::RadialGradient::gen(); + fill3->radial(x1 + r, y1 + r, 40.0f); + fill3->colorStops(colorStops, colorCnt); + fill3->spread(tvg::FillSpread::Repeat); + shape3->fill(std::move(fill3)); + + if (canvas->push(std::move(shape3)) != tvg::Result::Success) return; + } + + //Linear grad + { + float x1, y1 = 480.0f, r = 120.0f; + + //Pad + x1 = 20.0f; + auto shape1 = tvg::Shape::gen(); + shape1->appendRect(x1, y1, 2.0f * r, 2.0f * r); + + auto fill1 = tvg::LinearGradient::gen(); + fill1->linear(x1, y1, x1 + 50.0f, y1 + 50.0f); + fill1->colorStops(colorStops, colorCnt); + fill1->spread(tvg::FillSpread::Pad); + shape1->fill(std::move(fill1)); + + if (canvas->push(std::move(shape1)) != tvg::Result::Success) return; + + //Reflect + x1 = 280.0f; + auto shape2 = tvg::Shape::gen(); + shape2->appendRect(x1, y1, 2.0f * r, 2.0f * r); + + auto fill2 = tvg::LinearGradient::gen(); + fill2->linear(x1, y1, x1 + 50.0f, y1 + 50.0f); + fill2->colorStops(colorStops, colorCnt); + fill2->spread(tvg::FillSpread::Reflect); + shape2->fill(std::move(fill2)); + + if (canvas->push(std::move(shape2)) != tvg::Result::Success) return; + + //Repeat + x1 = 540.0f; + auto shape3 = tvg::Shape::gen(); + shape3->appendRect(x1, y1, 2.0f * r, 2.0f * r); + + auto fill3 = tvg::LinearGradient::gen(); + fill3->linear(x1, y1, x1 + 50.0f, y1 + 50.0f); + fill3->colorStops(colorStops, colorCnt); + fill3->spread(tvg::FillSpread::Repeat); + shape3->fill(std::move(fill3)); + + if (canvas->push(std::move(shape3)) != tvg::Result::Success) return; + } +} + +/************************************************************************/ +/* Sw Engine Test Code */ +/************************************************************************/ + +static unique_ptr swCanvas; + +void initSwView(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) +{ + //Create a Canvas + glCanvas = tvg::GlCanvas::gen(); + + //Get the drawing target id + int32_t targetId; + auto gl = elm_glview_gl_api_get(obj); + gl->glGetIntegerv(GL_FRAMEBUFFER_BINDING, &targetId); + + glCanvas->target(targetId, 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/examples/meson.build b/examples/meson.build index de64140a..ed40e01f 100644 --- a/examples/meson.build +++ b/examples/meson.build @@ -16,6 +16,7 @@ source_file = [ 'DirectUpdate.cpp', 'Duplicate.cpp', 'FillRule.cpp', + 'FillSpread.cpp', 'GifSaver.cpp', 'GradientMasking.cpp', 'GradientStroke.cpp',