1 #if LV_BUILD_TEST
2 #include "../lvgl.h"
3 #include "../../lvgl_private.h"
4
5 #include "unity/unity.h"
6
setUp(void)7 void setUp(void)
8 {
9 /* Function run before every test */
10 lv_obj_set_flex_flow(lv_screen_active(), LV_FLEX_FLOW_ROW_WRAP);
11 lv_obj_set_flex_align(lv_screen_active(), LV_FLEX_ALIGN_SPACE_EVENLY, LV_FLEX_ALIGN_CENTER, LV_FLEX_ALIGN_SPACE_EVENLY);
12 }
13
tearDown(void)14 void tearDown(void)
15 {
16 /* Function run after every test */
17 lv_obj_clean(lv_screen_active());
18 }
19
canvas_create(void)20 static lv_obj_t * canvas_create(void)
21 {
22 lv_obj_t * canvas = lv_canvas_create(lv_screen_active());
23 lv_obj_set_size(canvas, 500, 360);
24
25 lv_draw_buf_t * draw_buf = lv_draw_buf_create(500, 360, LV_COLOR_FORMAT_ARGB8888, LV_STRIDE_AUTO);
26 lv_draw_buf_clear(draw_buf, NULL);
27 lv_canvas_set_draw_buf(canvas, draw_buf);
28
29 return canvas;
30 }
31
canvas_destroy(lv_obj_t * canvas)32 static void canvas_destroy(lv_obj_t * canvas)
33 {
34 lv_draw_buf_destroy(lv_canvas_get_draw_buf(canvas));
35 lv_obj_delete(canvas);
36 }
37
test_draw_sin_wave(void)38 void test_draw_sin_wave(void)
39 {
40 const char * string = "lol~ I'm wavvvvvvving~";
41 const uint32_t string_len = lv_strlen(string);
42
43 LV_FONT_DECLARE(test_font_montserrat_ascii_4bpp);
44 lv_obj_t * canvas = canvas_create();
45
46 lv_layer_t layer;
47 lv_canvas_init_layer(canvas, &layer);
48
49 lv_draw_letter_dsc_t letter_dsc;
50 lv_draw_letter_dsc_init(&letter_dsc);
51 letter_dsc.color = lv_color_hex(0xff0000);
52 letter_dsc.font = &test_font_montserrat_ascii_4bpp;
53
54 {
55 #define CURVE1_X(t) (t * 2 + 20)
56 #define CURVE1_Y(t) (lv_trigo_sin(t) * 40 / 32767 + 80)
57 int32_t pre_x = CURVE1_X(-1);
58 int32_t pre_y = CURVE1_Y(-1);
59
60 for(int16_t i = 0; i < 30; i++) {
61 const int32_t angle = i * 10;
62 const int32_t x = CURVE1_X(angle);
63 const int32_t y = CURVE1_Y(angle);
64 letter_dsc.unicode = (uint32_t)string[i % string_len];
65 letter_dsc.rotation = lv_atan2(y - pre_y, x - pre_x);
66 letter_dsc.rotation = (letter_dsc.rotation > 180 ? letter_dsc.rotation - 360 : letter_dsc.rotation) * 5;
67 lv_draw_letter(&layer, &letter_dsc, &(lv_point_t) {
68 .x = x, .y = y
69 });
70 pre_x = x;
71 pre_y = y;
72 }
73 }
74
75 {
76 #define CURVE2_X(t) (t * 3 + 20)
77 #define CURVE2_Y(t) (lv_trigo_sin((t) * 4) * 40 / 32767 + 230)
78
79 int32_t pre_x = CURVE2_X(-1);
80 int32_t pre_y = CURVE2_Y(-1);
81 for(int16_t i = 0; i < 30; i++) {
82 const int32_t angle = i * 5;
83 const int32_t x = CURVE2_X(angle);
84 const int32_t y = CURVE2_Y(angle);
85
86 letter_dsc.unicode = (uint32_t)string[i % string_len];
87 letter_dsc.rotation = lv_atan2(y - pre_y, x - pre_x) * 10;
88 letter_dsc.color = lv_color_hsv_to_rgb(i * 10, 100, 100);
89 lv_draw_letter(&layer, &letter_dsc, &(lv_point_t) {
90 .x = x, .y = y
91 });
92
93 pre_x = x;
94 pre_y = y;
95 }
96 }
97
98 lv_canvas_finish_layer(canvas, &layer);
99
100 #ifndef NON_AMD64_BUILD
101 TEST_ASSERT_EQUAL_SCREENSHOT("draw/letter_0.png");
102 #endif
103
104 canvas_destroy(canvas);
105 }
106
107 #endif
108
