src/examples/Capi.cpp

   1 /*
   2  * Copyright (c) 2020-2021 Samsung Electronics Co., Ltd. All rights reserved.
   3
   4  * Permission is hereby granted, free of charge, to any person obtaining a copy
   5  * of this software and associated documentation files (the "Software"), to deal
   6  * in the Software without restriction, including without limitation the rights
   7  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   8  * copies of the Software, and to permit persons to whom the Software is
   9  * furnished to do so, subject to the following conditions:
  10
  11  * The above copyright notice and this permission notice shall be included in all
  12  * copies or substantial portions of the Software.
  13
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  17  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  18  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  19  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  20  * SOFTWARE.
  21  */
  22
  23 #include <Elementary.h>
  24 #include <thorvg_capi.h>
  25
  26 #define WIDTH 800
  27 #define HEIGHT 800
  28
  29
  30 /************************************************************************/
  31 /* Capi Test Code                                                       */
  32 /************************************************************************/
  33
  34 static uint32_t* buffer = NULL;
  35 static Tvg_Canvas* canvas = NULL;
  36 static Eo* view = NULL;
  37
  38 void testCapi()
  39 {
  40     canvas = tvg_swcanvas_create();
  41     tvg_swcanvas_set_target(canvas, buffer, WIDTH, WIDTH, HEIGHT, TVG_COLORSPACE_ARGB8888);
  42     tvg_swcanvas_set_mempool(canvas, TVG_MEMPOOL_POLICY_DEFAULT);
  43
  44     tvg_canvas_reserve(canvas, 6);
  45
  46 //////1. Linear gradient shape with a linear gradient stroke
  47     //Set a shape
  48     Tvg_Paint* shape1 = tvg_shape_new();
  49     tvg_shape_move_to(shape1, 25.0f, 25.0f);
  50     tvg_shape_line_to(shape1, 375.0f, 25.0f);
  51     tvg_shape_cubic_to(shape1, 500.0f, 100.0f, -500.0f, 200.0f, 375.0f, 375.0f);
  52     tvg_shape_close(shape1);
  53
  54     //Prepare a gradient for the fill
  55     Tvg_Gradient* grad1 = tvg_linear_gradient_new();
  56     tvg_linear_gradient_set(grad1, 25.0f, 25.0f, 200.0f, 200.0f);
  57     Tvg_Color_Stop color_stops1[4] =
  58     {
  59         {0.00f, 255,   0,   0, 155},
  60         {0.33f,   0, 255,   0, 100},
  61         {0.66f, 255,   0, 255, 100},
  62         {1.00f,   0,   0, 255, 155}
  63     };
  64     tvg_gradient_set_color_stops(grad1, color_stops1, 4);
  65     tvg_gradient_set_spread(grad1, TVG_STROKE_FILL_REFLECT);
  66
  67     //Prepare a gradient for the stroke
  68     Tvg_Gradient* grad1_stroke = tvg_gradient_duplicate(grad1);
  69
  70     //Set a gradient fill
  71     tvg_shape_set_linear_gradient(shape1, grad1);
  72
  73     //Set a gradient stroke
  74     tvg_shape_set_stroke_width(shape1, 20.0f);
  75     tvg_shape_set_stroke_linear_gradient(shape1, grad1_stroke);
  76     tvg_shape_set_stroke_join(shape1, TVG_STROKE_JOIN_ROUND);
  77
  78
  79 //////2. Solid transformed shape
  80     //Set a shape
  81     const Tvg_Path_Command* cmds;
  82     uint32_t cmdCnt;
  83     const Tvg_Point* pts;
  84     uint32_t ptsCnt;
  85
  86     Tvg_Paint* shape2 = tvg_shape_new();
  87     tvg_shape_get_path_commands(shape1, &cmds, &cmdCnt);
  88     tvg_shape_get_path_coords(shape1, &pts, &ptsCnt);
  89
  90     tvg_shape_append_path(shape2, cmds, cmdCnt, pts, ptsCnt);
  91     tvg_shape_set_fill_color(shape2, 255, 255, 255, 128);
  92
  93     //Transform a shape
  94     tvg_paint_scale(shape2, 0.3f);
  95     tvg_paint_translate(shape2, 100.0f, 100.0f);
  96
  97
  98     //Push shapes 1 and 2 into the canvas
  99     tvg_canvas_push(canvas, shape1);
 100     tvg_canvas_push(canvas, shape2);
 101
 102
 103 //////3. Radial gradient shape with a radial dashed stroke
 104     //Set a shape
 105     Tvg_Paint* shape3 = tvg_shape_new();
 106     tvg_shape_append_rect(shape3, 550.0f, 20.0f, 100.0f, 50.0f, 0.0f, 0.0f);
 107     tvg_shape_append_circle(shape3, 600.0f, 150.0f, 100.0f, 50.0f);
 108     tvg_shape_append_rect(shape3, 550.0f, 230.0f, 100.0f, 100.0f, 20.0f, 40.0f);
 109
 110     //Prepare a radial gradient for the fill
 111     Tvg_Gradient* grad2 = tvg_radial_gradient_new();
 112     tvg_radial_gradient_set(grad2, 600.0f, 180.0f, 50.0f);
 113     Tvg_Color_Stop color_stops2[3] =
 114     {
 115         {0.0f, 255,   0, 255, 255},
 116         {0.5f,   0,   0, 255, 255},
 117         {1.0f,  50,  55, 155, 255}
 118     };
 119     tvg_gradient_set_color_stops(grad2, color_stops2, 3);
 120     tvg_gradient_set_spread(grad2, TVG_STROKE_FILL_PAD);
 121
 122     //Set a gradient fill
 123     tvg_shape_set_radial_gradient(shape3, grad2);
 124
 125     //Prepaer a radial gradient for the stroke
 126     uint32_t cnt;
 127     const Tvg_Color_Stop* color_stops2_get;
 128     tvg_gradient_get_color_stops(grad2, &color_stops2_get, &cnt);
 129
 130     float cx, cy, radius;
 131     tvg_radial_gradient_get(grad2, &cx, &cy, &radius);
 132
 133     Tvg_Gradient* grad2_stroke = tvg_radial_gradient_new();
 134     tvg_radial_gradient_set(grad2_stroke, cx, cy, radius);
 135     tvg_gradient_set_color_stops(grad2_stroke, color_stops2_get, cnt);
 136     tvg_gradient_set_spread(grad2_stroke, TVG_STROKE_FILL_REPEAT);
 137
 138     //Set a gradient stroke
 139     tvg_shape_set_stroke_width(shape3, 30.0f);
 140     tvg_shape_set_stroke_radial_gradient(shape3, grad2_stroke);
 141
 142     tvg_paint_set_opacity(shape3, 200);
 143
 144     //Push the shape into the canvas
 145     tvg_canvas_push(canvas, shape3);
 146
 147
 148 //////4. Scene
 149     //Set a scene
 150     Tvg_Paint* scene = tvg_scene_new();
 151     tvg_scene_reserve(scene, 2);
 152
 153     //Set an arc
 154     Tvg_Paint* scene_shape1 = tvg_shape_new();
 155     tvg_shape_append_arc(scene_shape1, 175.0f, 600.0f, 150.0f, -45.0f, 90.0f, 1);
 156     tvg_shape_append_arc(scene_shape1, 175.0f, 600.0f, 150.0f, 225.0f, -90.0f, 1);
 157     tvg_shape_set_fill_color(scene_shape1, 0, 0, 255, 150);
 158
 159     //Set an arc with a dashed stroke
 160     Tvg_Paint* scene_shape2 = tvg_paint_duplicate(scene_shape1);
 161     tvg_shape_set_fill_color(scene_shape2, 75, 25, 155, 200);
 162
 163     //Prapare a dash for the stroke
 164     float dashPattern[4] = {15.0f, 30.0f, 2.0f, 30.0f};
 165     tvg_shape_set_stroke_dash(scene_shape2, dashPattern, 4);
 166     tvg_shape_set_stroke_cap(scene_shape2, TVG_STROKE_CAP_ROUND);
 167     tvg_shape_set_stroke_color(scene_shape2, 0, 0, 255, 255);
 168     tvg_shape_set_stroke_width(scene_shape2, 15.0f);
 169
 170     //Transform a shape
 171     tvg_paint_scale(scene_shape2, 0.7f);
 172     tvg_paint_rotate(scene_shape2, -90.0f);
 173     tvg_paint_translate(scene_shape2, -245.0f, 722.0f);
 174
 175     //Push the shapes into the scene
 176     tvg_scene_push(scene, scene_shape1);
 177     tvg_scene_push(scene, scene_shape2);
 178
 179     //Push the scene into the canvas
 180     tvg_canvas_push(canvas, scene);
 181
 182
 183 //////5. Masked picture
 184     //Set a scene
 185     Tvg_Paint* pict = tvg_picture_new();
 186     if (tvg_picture_load(pict, EXAMPLE_DIR"/tiger.svg") != TVG_RESULT_SUCCESS) {
 187         printf("Problem with loading an svg file\n");
 188         tvg_paint_del(pict);
 189     } else {
 190         float w, h;
 191         tvg_picture_get_size(pict, &w, &h);
 192         tvg_picture_set_size(pict, w/2, h/2);
 193         Tvg_Matrix m = {0.8f, 0.0f, 400.0f, 0.0f, 0.8f, 400.0f, 0.0f, 0.0f, 1.0f};
 194         tvg_paint_transform(pict, &m);
 195
 196         // Set a composite shape
 197         Tvg_Paint* comp = tvg_shape_new();
 198         tvg_shape_append_circle(comp, 600.0f, 600.0f, 100.0f, 100.0f);
 199         tvg_shape_set_fill_color(comp, 0, 0, 0, 200);
 200         tvg_paint_set_composite_method(pict, comp, TVG_COMPOSITE_METHOD_INVERSE_ALPHA_MASK);
 201
 202         //Push the scene into the canvas
 203         tvg_canvas_push(canvas, pict);
 204     }
 205
 206
 207 //////Save a paint
 208     //Create a shape
 209     Tvg_Paint* shape = tvg_shape_new();
 210     tvg_shape_append_circle(shape, 420.0f, 420.0f, 10.0f, 10.0f);
 211     tvg_shape_set_fill_color(shape, 0, 255, 0, 200);
 212
 213     //Save the shape
 214     Tvg_Saver* saver = tvg_saver_new();
 215     if (tvg_saver_save(saver, shape, EXAMPLE_DIR"/capi_test.tvg", true) != TVG_RESULT_SUCCESS) {
 216         printf("Problem with saving a tvg file\n");
 217     } else {
 218       tvg_saver_sync(saver);
 219     }
 220     tvg_saver_del(saver);
 221
 222     //Load the saved paint
 223     Tvg_Paint* pict_tvg = tvg_picture_new();
 224     if (tvg_picture_load(pict_tvg, EXAMPLE_DIR"/capi_test.tvg") != TVG_RESULT_SUCCESS) {
 225         printf("Problem with loading a tvg file\n");
 226         tvg_paint_del(pict_tvg);
 227     } else {
 228         //Push the scene into the canvas
 229         tvg_canvas_push(canvas, pict_tvg);
 230     }
 231
 232 //////Draw the canvas
 233     tvg_canvas_draw(canvas);
 234     tvg_canvas_sync(canvas);
 235 }
 236
 237
 238 /************************************************************************/
 239 /* Main Code                                                            */
 240 /************************************************************************/
 241
 242 void win_del(void *data, Evas_Object *o, void *ev)
 243 {
 244    elm_exit();
 245 }
 246
 247 void resize_cb(void *data, Evas *e, Evas_Object *obj, void *event_info)
 248 {
 249     int w = 0, h = 0;
 250     evas_object_geometry_get(obj, NULL, NULL, &w, &h);
 251
 252     if ((w != WIDTH || h != HEIGHT) && (w != 0 && h != 0))
 253     {
 254         evas_object_image_data_set(view, NULL); //prevent evas scale on invalid buffer by rendering thread
 255         buffer = (uint32_t*) realloc(buffer, sizeof(uint32_t) * w * h);
 256         tvg_swcanvas_set_target(canvas, buffer, w, w, h, TVG_COLORSPACE_ARGB8888);
 257
 258         tvg_canvas_update(canvas);
 259         tvg_canvas_draw(canvas);
 260         tvg_canvas_sync(canvas);
 261
 262         evas_object_image_size_set(view, w, h);
 263         evas_object_image_data_set(view, buffer);
 264         evas_object_image_pixels_dirty_set(view, EINA_TRUE);
 265         evas_object_image_data_update_add(view, 0, 0, w, h);
 266     }
 267 }
 268
 269 int main(int argc, char **argv)
 270 {
 271     elm_init(argc, argv);
 272     tvg_engine_init(Tvg_Engine(TVG_ENGINE_SW | TVG_ENGINE_GL), 0);
 273
 274     buffer = (uint32_t*)malloc(sizeof(uint32_t) * WIDTH * HEIGHT);
 275
 276     Eo* win = elm_win_util_standard_add(NULL, "ThorVG Test");
 277
 278     evas_object_smart_callback_add(win, "delete,request", win_del, 0);
 279     evas_object_event_callback_add(win, EVAS_CALLBACK_RESIZE, resize_cb, 0);
 280
 281     view = evas_object_image_filled_add(evas_object_evas_get(win));
 282     evas_object_image_size_set(view, WIDTH, HEIGHT);
 283     evas_object_image_data_set(view, buffer);
 284     evas_object_image_pixels_dirty_set(view, EINA_TRUE);
 285     evas_object_image_data_update_add(view, 0, 0, WIDTH, HEIGHT);
 286     evas_object_size_hint_weight_set(view, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
 287     evas_object_show(view);
 288
 289     elm_win_resize_object_add(win, view);
 290     evas_object_geometry_set(win, 0, 0, WIDTH, HEIGHT);
 291     evas_object_show(win);
 292
 293     testCapi();
 294
 295     elm_run();
 296
 297     tvg_canvas_destroy(canvas);
 298     free(buffer);
 299     tvg_engine_term(Tvg_Engine(TVG_ENGINE_SW | TVG_ENGINE_GL));
 300     elm_shutdown();
 301
 302     return 0;
 303 }