1 /**
2 * @file lv_draw_vglite_line.c
3 *
4 */
5
6 /**
7 * Copyright 2022-2024 NXP
8 *
9 * SPDX-License-Identifier: MIT
10 */
11
12 /*********************
13 * INCLUDES
14 *********************/
15
16 #include "lv_draw_vglite.h"
17
18 #if LV_USE_DRAW_VGLITE
19 #include "lv_vglite_buf.h"
20 #include "lv_vglite_utils.h"
21
22 /*********************
23 * DEFINES
24 *********************/
25
26 /**********************
27 * TYPEDEFS
28 **********************/
29
30 /**********************
31 * STATIC PROTOTYPES
32 **********************/
33
34 /**
35 * Draw line shape with effects
36 *
37 * @param[in] point1 Starting point with relative coordinates
38 * @param[in] point2 Ending point with relative coordinates
39 * @param[in] clip_area Clip area with relative coordinates to dest buff
40 * @param[in] dsc Line description structure (width, rounded ending, opacity, ...)
41 *
42 */
43 static void _vglite_draw_line(const lv_point_t * point1, const lv_point_t * point2,
44 const lv_area_t * clip_area, const lv_draw_line_dsc_t * dsc);
45
46 /**********************
47 * STATIC VARIABLES
48 **********************/
49
50 /**********************
51 * MACROS
52 **********************/
53
54 /**********************
55 * GLOBAL FUNCTIONS
56 **********************/
57
lv_draw_vglite_line(lv_draw_unit_t * draw_unit,const lv_draw_line_dsc_t * dsc)58 void lv_draw_vglite_line(lv_draw_unit_t * draw_unit, const lv_draw_line_dsc_t * dsc)
59 {
60 if(dsc->width == 0)
61 return;
62 if(dsc->opa <= (lv_opa_t)LV_OPA_MIN)
63 return;
64 if(dsc->p1.x == dsc->p2.x && dsc->p1.y == dsc->p2.y)
65 return;
66
67 lv_layer_t * layer = draw_unit->target_layer;
68 lv_area_t clip_area;
69 clip_area.x1 = LV_MIN(dsc->p1.x, dsc->p2.x) - dsc->width / 2;
70 clip_area.x2 = LV_MAX(dsc->p1.x, dsc->p2.x) + dsc->width / 2;
71 clip_area.y1 = LV_MIN(dsc->p1.y, dsc->p2.y) - dsc->width / 2;
72 clip_area.y2 = LV_MAX(dsc->p1.y, dsc->p2.y) + dsc->width / 2;
73
74 if(!lv_area_intersect(&clip_area, &clip_area, draw_unit->clip_area))
75 return; /*Fully clipped, nothing to do*/
76
77 lv_area_move(&clip_area, -layer->buf_area.x1, -layer->buf_area.y1);
78
79 lv_point_t point1 = {dsc->p1.x - layer->buf_area.x1, dsc->p1.y - layer->buf_area.y1};
80 lv_point_t point2 = {dsc->p2.x - layer->buf_area.x1, dsc->p2.y - layer->buf_area.y1};
81
82 _vglite_draw_line(&point1, &point2, &clip_area, dsc);
83 }
84
85 /**********************
86 * STATIC FUNCTIONS
87 **********************/
88
_vglite_draw_line(const lv_point_t * point1,const lv_point_t * point2,const lv_area_t * clip_area,const lv_draw_line_dsc_t * dsc)89 static void _vglite_draw_line(const lv_point_t * point1, const lv_point_t * point2,
90 const lv_area_t * clip_area, const lv_draw_line_dsc_t * dsc)
91 {
92 vg_lite_path_t path;
93 vg_lite_buffer_t * vgbuf = vglite_get_dest_buf();
94 vg_lite_cap_style_t cap_style = (dsc->round_start || dsc->round_end) ? VG_LITE_CAP_ROUND : VG_LITE_CAP_BUTT;
95 vg_lite_join_style_t join_style = (dsc->round_start || dsc->round_end) ? VG_LITE_JOIN_ROUND : VG_LITE_JOIN_MITER;
96
97 bool is_dashed = (dsc->dash_width && dsc->dash_gap);
98
99 vg_lite_float_t stroke_dash_pattern[2] = {0, 0};
100 uint32_t stroke_dash_count = 0;
101 vg_lite_float_t stroke_dash_phase = 0;
102 if(is_dashed) {
103 stroke_dash_pattern[0] = (vg_lite_float_t)dsc->dash_width;
104 stroke_dash_pattern[1] = (vg_lite_float_t)dsc->dash_gap;
105 stroke_dash_count = sizeof(stroke_dash_pattern) / sizeof(vg_lite_float_t);
106 stroke_dash_phase = (vg_lite_float_t)dsc->dash_width / 2;
107 }
108
109 vg_lite_blend_t vgblend = vglite_get_blend_mode(dsc->blend_mode);
110
111 /*** Init path ***/
112 int32_t width = dsc->width;
113
114 int32_t line_path[] = { /*VG line path*/
115 VLC_OP_MOVE, point1->x, point1->y,
116 VLC_OP_LINE, point2->x, point2->y,
117 VLC_OP_END
118 };
119
120 VGLITE_CHECK_ERROR(vg_lite_init_path(&path, VG_LITE_S32, VG_LITE_HIGH, sizeof(line_path), line_path,
121 (vg_lite_float_t)clip_area->x1, (vg_lite_float_t)clip_area->y1,
122 ((vg_lite_float_t)clip_area->x2) + 1.0f, ((vg_lite_float_t)clip_area->y2) + 1.0f));
123
124 lv_color32_t col32 = lv_color_to_32(dsc->color, dsc->opa);
125 vg_lite_color_t vgcol = vglite_get_color(col32, false);
126
127 /*** Draw line ***/
128 VGLITE_CHECK_ERROR(vg_lite_set_draw_path_type(&path, VG_LITE_DRAW_STROKE_PATH));
129
130 VGLITE_CHECK_ERROR(vg_lite_set_stroke(&path, cap_style, join_style, width, 8, stroke_dash_pattern, stroke_dash_count,
131 stroke_dash_phase, vgcol));
132
133 VGLITE_CHECK_ERROR(vg_lite_update_stroke(&path));
134
135 VGLITE_CHECK_ERROR(vg_lite_draw(vgbuf, &path, VG_LITE_FILL_NON_ZERO, NULL, vgblend, vgcol));
136
137 vglite_run();
138
139 VGLITE_CHECK_ERROR(vg_lite_clear_path(&path));
140 }
141
142 #endif /*LV_USE_DRAW_VGLITE*/
143
