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orion-rf.piolibdepsesp32-s3-n16r8U8g2srcclibu8x8_message.c

152 lines · 4.3 KB · C

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1/*
2
3 u8x8_message.c
4
5 Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
6
7 Copyright (c) 2016, olikraus@gmail.com
8 All rights reserved.
9
10 Redistribution and use in source and binary forms, with or without modification,
11 are permitted provided that the following conditions are met:
12
13 * Redistributions of source code must retain the above copyright notice, this list
14 of conditions and the following disclaimer.
15
16 * Redistributions in binary form must reproduce the above copyright notice, this
17 list of conditions and the following disclaimer in the documentation and/or other
18 materials provided with the distribution.
19
20 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
21 CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
22 INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
23 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
24 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
25 CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
26 SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
27 NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
28 LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
29 CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
30 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
32 ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33
34*/
35
36#include "u8x8.h"
37
38uint8_t u8x8_draw_button_line(u8x8_t *u8x8, uint8_t y, uint8_t w, uint8_t cursor, const char *s)
39{
40 uint8_t i;
41 uint8_t cnt;
42 uint8_t total;
43 uint8_t d;
44 uint8_t x;
45 cnt = u8x8_GetStringLineCnt(s);
46
47 /* calculate the width of the button */
48 total = 0;
49 for( i = 0; i < cnt; i++ )
50 {
51 total += u8x8_GetUTF8Len(u8x8, u8x8_GetStringLineStart(i, s));
52 }
53 total += (cnt-1); /* had one space between the buttons */
54
55 /* calculate the left offset */
56 d = 0;
57 if ( total < w )
58 {
59 d = w;
60 d -= total;
61 d /= 2;
62 }
63
64 /* draw the buttons */
65 x = d;
66 u8x8_SetInverseFont(u8x8, 0);
67 for( i = 0; i < cnt; i++ )
68 {
69 if ( i == cursor )
70 u8x8_SetInverseFont(u8x8, 1);
71
72 x+=u8x8_DrawUTF8(u8x8, x, y, u8x8_GetStringLineStart(i, s));
73 u8x8_SetInverseFont(u8x8, 0);
74 x+=u8x8_DrawUTF8(u8x8, x, y, " ");
75 }
76
77 /* return the number of buttons */
78 return cnt;
79}
80
81/*
82 title1: Multiple lines,separated by '\n'
83 title2: A single line/string which is terminated by '\0' or '\n' . "title2" accepts the return value from u8x8_GetStringLineStart()
84 title3: Multiple lines,separated by '\n'
85 buttons: one more more buttons separated by '\n' and terminated with '\0'
86*/
87
88uint8_t u8x8_UserInterfaceMessage(u8x8_t *u8x8, const char *title1, const char *title2, const char *title3, const char *buttons)
89{
90 uint8_t height;
91 uint8_t y;
92 uint8_t cursor = 0;
93 uint8_t button_cnt;
94 uint8_t event;
95
96 u8x8_SetInverseFont(u8x8, 0);
97
98 /* calculate overall height of the message box */
99 height = 1; /* button line */
100 height += u8x8_GetStringLineCnt(title1);
101 if ( title2 != NULL )
102 height ++;
103 height += u8x8_GetStringLineCnt(title3);
104
105 /* calculate offset from top */
106 y = 0;
107 if ( height < u8x8_GetRows(u8x8) )
108 {
109 y = u8x8_GetRows(u8x8);
110 y -= height;
111 y /= 2;
112 }
113
114 /* draw message box */
115
116 u8x8_ClearDisplay(u8x8); /* required, because not everything is filled */
117
118 y += u8x8_DrawUTF8Lines(u8x8, 0, y, u8x8_GetCols(u8x8), title1);
119 if ( title2 != NULL )
120 {
121 u8x8_DrawUTF8Line(u8x8, 0, y, u8x8_GetCols(u8x8), title2);
122 y++;
123 }
124 y += u8x8_DrawUTF8Lines(u8x8, 0, y, u8x8_GetCols(u8x8), title3);
125
126 button_cnt = u8x8_draw_button_line(u8x8, y, u8x8_GetCols(u8x8), cursor, buttons);
127
128 for(;;)
129 {
130 event = u8x8_GetMenuEvent(u8x8);
131 if ( event == U8X8_MSG_GPIO_MENU_SELECT )
132 return cursor+1;
133 else if ( event == U8X8_MSG_GPIO_MENU_HOME )
134 break;
135 else if ( event == U8X8_MSG_GPIO_MENU_NEXT || event == U8X8_MSG_GPIO_MENU_UP )
136 {
137 cursor++;
138 if ( cursor >= button_cnt )
139 cursor = 0;
140 u8x8_draw_button_line(u8x8, y, u8x8_GetCols(u8x8), cursor, buttons);
141 }
142 else if ( event == U8X8_MSG_GPIO_MENU_PREV || event == U8X8_MSG_GPIO_MENU_DOWN )
143 {
144 if ( cursor == 0 )
145 cursor = button_cnt;
146 cursor--;
147 u8x8_draw_button_line(u8x8, y, u8x8_GetCols(u8x8), cursor, buttons);
148 }
149 }
150 return 0;
151}
152