mirror of
https://github.com/thorvg/thorvg.git
synced 2025-06-07 21:23:32 +00:00
53e5e783b7
Simplified parameters and ensured proper backend engine initialization by using reference checking through canvas instances. C++ API Modification: - Result Initializer::init(uint32_t threads, CanvasEngine engine) -> Result Initializer::init(uint32_t threads) - Result Initializer::term(CanvasEngine engine) -> Result Initializer::term() C API Modification: - Tvg_Result tvg_engine_init(Tvg_Engine engine_method, unsigned threads) -> Tvg_Result tvg_engine_init(unsigned threads); - Tvg_Result tvg_engine_term(Tvg_Engine engine_method) -> Tvg_Result tvg_engine_term() issue: https://github.com/thorvg/thorvg/issues/3116
339 lines
12 KiB
C++
339 lines
12 KiB
C++
/*
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* Copyright (c) 2020 - 2025 the ThorVG project. 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 <thorvg_capi.h>
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#include <SDL2/SDL.h>
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#include <SDL2/SDL_syswm.h>
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#include <stdio.h>
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#define WIDTH 800
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#define HEIGHT 800
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/************************************************************************/
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/* Capi Test Code */
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/************************************************************************/
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static Tvg_Canvas* canvas = NULL;
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static Tvg_Animation* animation = NULL;
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void contents()
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{
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//Linear gradient shape with a linear gradient stroke
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{
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//Set a shape
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Tvg_Paint* shape1 = tvg_shape_new();
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tvg_shape_move_to(shape1, 25.0f, 25.0f);
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tvg_shape_line_to(shape1, 375.0f, 25.0f);
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tvg_shape_cubic_to(shape1, 500.0f, 100.0f, -500.0f, 200.0f, 375.0f, 375.0f);
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tvg_shape_close(shape1);
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//Prepare a gradient for the fill
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Tvg_Gradient* grad = tvg_linear_gradient_new();
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tvg_linear_gradient_set(grad, 25.0f, 25.0f, 200.0f, 200.0f);
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Tvg_Color_Stop color_stops[4] = {{0.00f, 255, 0, 0, 155}, {0.33f, 0, 255, 0, 100}, {0.66f, 255, 0, 255, 100}, {1.00f, 0, 0, 255, 155}};
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tvg_gradient_set_color_stops(grad, color_stops, 4);
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tvg_gradient_set_spread(grad, TVG_STROKE_FILL_REFLECT);
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//Prepare a gradient for the stroke
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Tvg_Gradient* grad_stroke = tvg_gradient_duplicate(grad);
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//Set a gradient fill
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tvg_shape_set_gradient(shape1, grad);
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//Set a gradient stroke
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tvg_shape_set_stroke_width(shape1, 20.0f);
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tvg_shape_set_stroke_gradient(shape1, grad_stroke);
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tvg_shape_set_stroke_join(shape1, TVG_STROKE_JOIN_ROUND);
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tvg_canvas_push(canvas, shape1);
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}
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//Solid transformed shape
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{
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//Set a shape
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Tvg_Paint* shape = tvg_shape_new();
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tvg_shape_move_to(shape, 25.0f, 25.0f);
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tvg_shape_line_to(shape, 375.0f, 25.0f);
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tvg_shape_cubic_to(shape, 500.0f, 100.0f, -500.0f, 200.0f, 375.0f, 375.0f);
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tvg_shape_close(shape);
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tvg_shape_set_fill_color(shape, 255, 255, 255, 128);
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//Transform a shape
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tvg_paint_scale(shape, 0.3f);
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tvg_paint_translate(shape, 100.0f, 100.0f);
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tvg_canvas_push(canvas, shape);
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}
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//Radial gradient shape with a radial dashed stroke
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{
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//Set a shape
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Tvg_Paint* shape = tvg_shape_new();
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tvg_shape_append_rect(shape, 550.0f, 20.0f, 100.0f, 50.0f, 0.0f, 0.0f, true);
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tvg_shape_append_circle(shape, 600.0f, 150.0f, 100.0f, 50.0f, true);
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tvg_shape_append_rect(shape, 550.0f, 230.0f, 100.0f, 100.0f, 20.0f, 40.0f, true);
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//Prepare a radial gradient for the fill
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Tvg_Gradient* grad = tvg_radial_gradient_new();
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tvg_radial_gradient_set(grad, 600.0f, 180.0f, 50.0f, 640.0f, 180.0f, 0.0f);
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Tvg_Color_Stop color_stops2[3] = {{0.0f, 255, 0, 255, 255}, {0.5f, 0, 0, 255, 255}, {1.0f, 50, 55, 155, 255}};
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tvg_gradient_set_color_stops(grad, color_stops2, 3);
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tvg_gradient_set_spread(grad, TVG_STROKE_FILL_PAD);
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//Set a gradient fill
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tvg_shape_set_gradient(shape, grad);
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//Prepare a radial gradient for the stroke
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uint32_t cnt;
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const Tvg_Color_Stop* color_stops2_get;
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tvg_gradient_get_color_stops(grad, &color_stops2_get, &cnt);
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float cx, cy, r, fx, fy, fr;
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tvg_radial_gradient_get(grad, &cx, &cy, &r, &fx, &fy, &fr);
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Tvg_Gradient* grad_stroke = tvg_radial_gradient_new();
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tvg_radial_gradient_set(grad_stroke, cx, cy, r, fx, fy, fr);
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tvg_gradient_set_color_stops(grad_stroke, color_stops2_get, cnt);
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tvg_gradient_set_spread(grad_stroke, TVG_STROKE_FILL_REPEAT);
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//Set a gradient stroke
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tvg_shape_set_stroke_width(shape, 30.0f);
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tvg_shape_set_stroke_gradient(shape, grad_stroke);
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tvg_paint_set_opacity(shape, 200);
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//Push the shape into the canvas
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tvg_canvas_push(canvas, shape);
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}
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//Scene
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{
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//Set a scene
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Tvg_Paint* scene = tvg_scene_new();
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//Set circles
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Tvg_Paint* scene_shape1 = tvg_shape_new();
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tvg_shape_append_circle(scene_shape1, 80.0f, 650.f, 40.0f, 140.0f, true);
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tvg_shape_append_circle(scene_shape1, 180.0f, 600.f, 40.0f, 60.0f, true);
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tvg_shape_set_fill_color(scene_shape1, 0, 0, 255, 150);
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tvg_shape_set_stroke_color(scene_shape1, 75, 25, 155, 255);
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tvg_shape_set_stroke_width(scene_shape1, 10.0f);
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tvg_shape_set_stroke_cap(scene_shape1, Tvg_Stroke_Cap::TVG_STROKE_CAP_ROUND);
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tvg_shape_set_stroke_join(scene_shape1, Tvg_Stroke_Join::TVG_STROKE_JOIN_ROUND);
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tvg_shape_set_trimpath(scene_shape1, 0.25f, 0.75f, true);
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//Set circles with a dashed stroke
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Tvg_Paint* scene_shape2 = tvg_paint_duplicate(scene_shape1);
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tvg_shape_set_fill_color(scene_shape2, 75, 25, 155, 200);
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//Prapare a dash for the stroke
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float dashPattern[4] = {15.0f, 30.0f, 2.0f, 30.0f};
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tvg_shape_set_stroke_dash(scene_shape2, dashPattern, 4, 0.0f);
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tvg_shape_set_stroke_cap(scene_shape2, TVG_STROKE_CAP_ROUND);
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tvg_shape_set_stroke_color(scene_shape2, 0, 0, 255, 255);
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tvg_shape_set_stroke_width(scene_shape2, 15.0f);
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//Transform a shape
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tvg_paint_scale(scene_shape2, 0.8f);
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tvg_paint_rotate(scene_shape2, -90.0f);
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tvg_paint_translate(scene_shape2, -200.0f, 800.0f);
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//Push the shapes into the scene
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tvg_scene_push(scene, scene_shape1);
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tvg_scene_push(scene, scene_shape2);
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//Push the scene into the canvas
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tvg_canvas_push(canvas, scene);
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}
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//Masked picture
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{
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//Set a scene
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Tvg_Paint* pict = tvg_picture_new();
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if (tvg_picture_load(pict, EXAMPLE_DIR"/svg/tiger.svg") != TVG_RESULT_SUCCESS) {
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printf("Problem with loading an svg file\n");
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tvg_paint_del(pict);
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} else {
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float w, h;
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tvg_picture_get_size(pict, &w, &h);
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tvg_picture_set_size(pict, w/2, h/2);
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Tvg_Matrix m = {0.8f, 0.0f, 400.0f, 0.0f, 0.8f, 400.0f, 0.0f, 0.0f, 1.0f};
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tvg_paint_set_transform(pict, &m);
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// Set a composite shape
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Tvg_Paint* comp = tvg_shape_new();
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tvg_shape_append_circle(comp, 600.0f, 600.0f, 100.0f, 100.0f, true);
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tvg_shape_set_fill_color(comp, 0, 0, 0, 200);
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tvg_paint_set_mask_method(pict, comp, TVG_MASK_METHOD_INVERSE_ALPHA);
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//Push the scene into the canvas
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tvg_canvas_push(canvas, pict);
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}
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}
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//Animation with a picture
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{
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animation = tvg_animation_new();
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Tvg_Paint* pict_lottie = tvg_animation_get_picture(animation);
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if (tvg_picture_load(pict_lottie, EXAMPLE_DIR"/lottie/sample.json") != TVG_RESULT_SUCCESS) {
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printf("Problem with loading a lottie file\n");
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tvg_animation_del(animation);
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animation = NULL;
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} else {
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tvg_paint_scale(pict_lottie, 0.75f);
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tvg_canvas_push(canvas, pict_lottie);
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}
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}
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//Text 1
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{
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//load from a file
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if (tvg_font_load(EXAMPLE_DIR"/font/SentyCloud.ttf") != TVG_RESULT_SUCCESS) {
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printf("Problem with loading the font from the file. Did you enable TTF Loader?\n");
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}
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Tvg_Paint *text = tvg_text_new();
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tvg_text_set_font(text, "SentyCloud", 25.0f, "");
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tvg_text_set_fill_color(text, 0, 0, 255);
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tvg_text_set_text(text, "\xE7\xB4\xA2\xE5\xB0\x94\x56\x47\x20\xE6\x98\xAF\xE6\x9C\x80\xE5\xA5\xBD\xE7\x9A\x84");
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tvg_paint_translate(text, 50.0f, 380.0f);
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tvg_canvas_push(canvas, text);
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}
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//Text 2
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{
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//load from a memory
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FILE* file = fopen(EXAMPLE_DIR"/font/Arial.ttf", "rb");
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if (file) {
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fseek(file, 0, SEEK_END);
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size_t data_size = ftell(file);
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fseek(file, 0, SEEK_SET);
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char* data = (char*)malloc(data_size);
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if (fread(data, 1, data_size, file) == data_size) {
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if (tvg_font_load_data("Arial", data, data_size, "ttf", true) != TVG_RESULT_SUCCESS) {
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printf("Problem with loading the font file from a memory. Did you enable TTF Loader?\n");
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}
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}
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free(data);
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fclose(file);
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}
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Tvg_Gradient* grad = tvg_radial_gradient_new();
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tvg_radial_gradient_set(grad, 200.0f, 200.0f, 20.0f, 200.0f, 200.0f, 0.0f);
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Tvg_Color_Stop color_stops[2] = {{0.0f, 255, 0, 255, 255}, {1.0f, 0, 0, 255, 255}};
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tvg_gradient_set_color_stops(grad, color_stops, 2);
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tvg_gradient_set_spread(grad, TVG_STROKE_FILL_REFLECT);
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Tvg_Paint *text = tvg_text_new();
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tvg_text_set_font(text, "Arial", 20.0f, "italic");
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tvg_text_set_gradient(text, grad);
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tvg_text_set_text(text, "ThorVG is the best");
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tvg_paint_translate(text, 70.0f, 420.0f);
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tvg_canvas_push(canvas, text);
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}
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}
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float progress(uint32_t elapsed, float durationInSec)
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{
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auto duration = (uint32_t)(durationInSec * 1000.0f); //sec -> millisec.
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auto clamped = elapsed % duration;
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return ((float)clamped / (float)duration);
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}
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/************************************************************************/
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/* Entry Point */
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/************************************************************************/
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int main(int argc, char **argv)
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{
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tvg_engine_init(4);
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SDL_Init(SDL_INIT_VIDEO);
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SDL_Window* window = SDL_CreateWindow("ThorVG Example (Software)", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, WIDTH, HEIGHT, SDL_WINDOW_SHOWN);
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SDL_Surface* surface = SDL_GetWindowSurface(window);
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//create the canvas
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canvas = tvg_swcanvas_create();
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tvg_swcanvas_set_target(canvas, (uint32_t*)surface->pixels, surface->w, surface->pitch / 4, surface->h, TVG_COLORSPACE_ARGB8888);
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contents();
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//display the first frame
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tvg_canvas_draw(canvas, true);
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tvg_canvas_sync(canvas);
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SDL_UpdateWindowSurface(window);
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//app main loop!
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SDL_Event event;
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auto running = true;
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auto ptime = SDL_GetTicks();
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auto elapsed = 0;
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while (running) {
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//SDL event handling
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while (SDL_PollEvent(&event)) {
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switch (event.type) {
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case SDL_QUIT: {
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running = false;
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break;
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}
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case SDL_KEYUP: {
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if (event.key.keysym.sym == SDLK_ESCAPE) {
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running = false;
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}
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break;
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}
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}
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}
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//update the animation
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if (animation) {
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float duration, totalFrame;
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tvg_animation_get_duration(animation, &duration);
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tvg_animation_get_total_frame(animation, &totalFrame);
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tvg_animation_set_frame(animation, totalFrame * progress(elapsed, duration));
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}
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//draw the canvas
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tvg_canvas_update(canvas);
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tvg_canvas_draw(canvas, true);
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tvg_canvas_sync(canvas);
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SDL_UpdateWindowSurface(window);
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auto ctime = SDL_GetTicks();
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elapsed += (ctime - ptime);
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ptime = ctime;
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}
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SDL_DestroyWindow(window);
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SDL_Quit();
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tvg_engine_term();
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return 0;
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}
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