1 /**
2 * @file lv_draw_vglite_border.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_path.h"
21 #include "lv_vglite_utils.h"
22
23 #include <math.h>
24
25 /*********************
26 * DEFINES
27 *********************/
28
29 /*********************
30 * DEFINES
31 *********************/
32
33 /*** Define maximum numbers of rectangles needed to clip partial borders ***/
34 #define MAX_NUM_RECTANGLES 4
35
36 /**********************
37 * TYPEDEFS
38 **********************/
39
40 /**********************
41 * STATIC PROTOTYPES
42 **********************/
43
44 /**
45 * Draw rectangle border/outline shape with effects (rounded corners, opacity)
46 *
47 * @param[in] coords Coordinates of the rectangle border/outline (relative to dest buff)
48 * @param[in] clip_area Clip area with relative coordinates to dest buff
49 * @param[in] dsc Description of the rectangle border/outline
50 *
51 */
52 static void _vglite_draw_border(const lv_area_t * coords, const lv_area_t * clip_area,
53 const lv_draw_border_dsc_t * dsc);
54
55 /**********************
56 * STATIC VARIABLES
57 **********************/
58
59 /**********************
60 * MACROS
61 **********************/
62
63 /**********************
64 * GLOBAL FUNCTIONS
65 **********************/
66
lv_draw_vglite_border(lv_draw_unit_t * draw_unit,const lv_draw_border_dsc_t * dsc,const lv_area_t * coords)67 void lv_draw_vglite_border(lv_draw_unit_t * draw_unit, const lv_draw_border_dsc_t * dsc,
68 const lv_area_t * coords)
69 {
70 if(dsc->opa <= (lv_opa_t)LV_OPA_MIN)
71 return;
72 if(dsc->width == 0)
73 return;
74 if(dsc->side == (lv_border_side_t)LV_BORDER_SIDE_NONE)
75 return;
76
77 lv_layer_t * layer = draw_unit->target_layer;
78 lv_area_t inward_coords;
79 int32_t width = dsc->width;
80
81 /* Move border inwards to align with software rendered border */
82 inward_coords.x1 = coords->x1 + ceil(width / 2.0f);
83 inward_coords.x2 = coords->x2 - floor(width / 2.0f);
84 inward_coords.y1 = coords->y1 + ceil(width / 2.0f);
85 inward_coords.y2 = coords->y2 - floor(width / 2.0f);
86
87 lv_area_move(&inward_coords, -layer->buf_area.x1, -layer->buf_area.y1);
88
89 lv_area_t clip_area;
90 lv_area_copy(&clip_area, draw_unit->clip_area);
91 lv_area_move(&clip_area, -layer->buf_area.x1, -layer->buf_area.y1);
92
93 lv_area_t clipped_coords;
94 if(!lv_area_intersect(&clipped_coords, &inward_coords, &clip_area))
95 return; /*Fully clipped, nothing to do*/
96
97 _vglite_draw_border(&inward_coords, &clip_area, dsc);
98 }
99
100 /**********************
101 * STATIC FUNCTIONS
102 **********************/
103
_vglite_draw_border(const lv_area_t * coords,const lv_area_t * clip_area,const lv_draw_border_dsc_t * dsc)104 static void _vglite_draw_border(const lv_area_t * coords, const lv_area_t * clip_area,
105 const lv_draw_border_dsc_t * dsc)
106 {
107 int32_t radius = dsc->radius;
108 vg_lite_buffer_t * vgbuf = vglite_get_dest_buf();
109
110 if(radius < 0)
111 return;
112
113 int32_t border_half = (int32_t)floor(dsc->width / 2.0f);
114 if(radius > border_half)
115 radius = radius - border_half;
116
117 vg_lite_cap_style_t cap_style = (radius) ? VG_LITE_CAP_ROUND : VG_LITE_CAP_BUTT;
118 vg_lite_join_style_t join_style = (radius) ? VG_LITE_JOIN_ROUND : VG_LITE_JOIN_MITER;
119
120 /*** Init path ***/
121 int32_t path_data[RECT_PATH_DATA_MAX_SIZE];
122 uint32_t path_data_size;
123 vglite_create_rect_path_data(path_data, &path_data_size, radius, coords);
124 vg_lite_quality_t path_quality = radius > 0 ? VG_LITE_HIGH : VG_LITE_MEDIUM;
125
126 vg_lite_path_t path;
127 VGLITE_CHECK_ERROR(vg_lite_init_path(&path, VG_LITE_S32, path_quality, path_data_size, path_data,
128 (vg_lite_float_t)clip_area->x1, (vg_lite_float_t)clip_area->y1,
129 ((vg_lite_float_t)clip_area->x2) + 1.0f, ((vg_lite_float_t)clip_area->y2) + 1.0f));
130
131 lv_color32_t col32 = lv_color_to_32(dsc->color, dsc->opa);
132 vg_lite_color_t vgcol = vglite_get_color(col32, false);
133
134 int32_t line_width = dsc->width;
135 lv_border_side_t border_side = dsc->side;
136
137 if(border_side == LV_BORDER_SIDE_FULL)
138 border_side = LV_BORDER_SIDE_TOP | LV_BORDER_SIDE_BOTTOM | LV_BORDER_SIDE_LEFT | LV_BORDER_SIDE_RIGHT;
139
140 uint32_t num_rect = 0;
141 vg_lite_rectangle_t rect[MAX_NUM_RECTANGLES];
142 int32_t rect_width = coords->x2 - coords->x1;
143 int32_t rect_height = coords->y2 - coords->y1;
144 int32_t shortest_side = LV_MIN(rect_width, rect_height);
145 int32_t final_radius = LV_MIN(radius, shortest_side / 2);
146
147 if(border_side & LV_BORDER_SIDE_TOP) {
148 rect[num_rect].x = coords->x1 - ceil(line_width / 2.0f);
149 rect[num_rect].y = coords->y1 - ceil(line_width / 2.0f);
150 rect[num_rect].width = coords->x2 - coords->x1 + line_width;
151 rect[num_rect].height = final_radius + ceil(line_width / 2.0f);
152 num_rect++;
153 }
154
155 if(border_side & LV_BORDER_SIDE_LEFT) {
156 rect[num_rect].x = coords->x1 - ceil(line_width / 2.0f);
157 rect[num_rect].y = coords->y1 - ceil(line_width / 2.0f);
158 rect[num_rect].width = final_radius + ceil(line_width / 2.0f);
159 rect[num_rect].height = coords->y2 - coords->y1 + line_width + 1;
160 num_rect++;
161 }
162
163 if(border_side & LV_BORDER_SIDE_RIGHT) {
164 rect[num_rect].x = coords->x2 - final_radius + 1;
165 rect[num_rect].y = coords->y1 - ceil(line_width / 2.0f);
166 rect[num_rect].width = final_radius + ceil(line_width / 2.0f);
167 rect[num_rect].height = coords->y2 - coords->y1 + line_width + 1;
168 num_rect++;
169 }
170
171 if(border_side & LV_BORDER_SIDE_BOTTOM) {
172 rect[num_rect].x = coords->x1 - ceil(line_width / 2.0f);
173 rect[num_rect].y = coords->y2 - final_radius + 1;
174 rect[num_rect].width = coords->x2 - coords->x1 + line_width;
175 rect[num_rect].height = final_radius + ceil(line_width / 2.0f);
176 num_rect++;
177 }
178
179 /*** Enable scissor and apply scissor rects ***/
180 VGLITE_CHECK_ERROR(vg_lite_enable_scissor());
181 VGLITE_CHECK_ERROR(vg_lite_scissor_rects(vgbuf, num_rect, rect));
182
183 /*** Draw border ***/
184 VGLITE_CHECK_ERROR(vg_lite_set_draw_path_type(&path, VG_LITE_DRAW_STROKE_PATH));
185
186 VGLITE_CHECK_ERROR(vg_lite_set_stroke(&path, cap_style, join_style, line_width, 8, NULL, 0, 0, vgcol));
187
188 VGLITE_CHECK_ERROR(vg_lite_update_stroke(&path));
189
190 VGLITE_CHECK_ERROR(vg_lite_draw(vgbuf, &path, VG_LITE_FILL_NON_ZERO, NULL, VG_LITE_BLEND_SRC_OVER, vgcol));
191
192 vglite_run();
193
194 VGLITE_CHECK_ERROR(vg_lite_clear_path(&path));
195
196 /*** Disable scissor ***/
197 VGLITE_CHECK_ERROR(vg_lite_disable_scissor());
198 }
199
200 #endif /*LV_USE_DRAW_VGLITE*/
201
