1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
|
/*
* Copyright (C) 2024 Tristan Riehs
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <raylib.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include "disp.h"
#define DEFAULT_HEIGHT 200
#define DEFAULT_WIDTH 16*DEFAULT_HEIGHT/9
static int current_input = 0;
static int current_x;
static int current_y;
void
init(void)
{
#ifndef NDEBUG
SetTraceLogLevel(LOG_DEBUG);
#else
SetTraceLogLevel(LOG_ERROR);
#endif
InitWindow(DEFAULT_WIDTH, DEFAULT_HEIGHT, "calculer");
if (!IsWindowReady())
{
fprintf(stderr, "calculer: error initialiazing Raylib \
window\n");
exit(1);
}
SetTargetFPS(60);
SetWindowState(FLAG_WINDOW_RESIZABLE);
BeginDrawing();
ClearBackground(RAYWHITE);
EndDrawing();
TraceLog(LOG_INFO, "window successfully initialized");
}
static int
min(int x, int y)
{
if (x < y)
return x;
else
return y;
}
static void
draw_calc(void)
{
char txt[64] = {0};
int win_width, win_height;
int txt_width;
int font_size;
sprintf(txt, "%d + %d", current_x, current_y);
win_width = GetScreenWidth();
win_height = GetScreenHeight();
font_size = min(win_height/3, 40);
txt_width = MeasureText(txt, font_size);
if (txt_width > win_width)
{
float scale = txt_width/win_width;
font_size = font_size/scale;
txt_width = MeasureText(txt, font_size);
}
DrawText(txt, (win_width-txt_width)/2, win_height/6, font_size, GRAY);
TraceLog(LOG_INFO, "calulation %d + %d successfully drawn",
current_x, current_y);
}
void
display_calc(int x, int y)
{
current_x = x;
current_y = y;
BeginDrawing();
ClearBackground(RAYWHITE);
draw_calc();
EndDrawing();
}
static void
draw_input(void)
{
char txt[64] = {0};
int win_width, win_height;
int txt_width;
int font_size;
sprintf(txt, "%d", current_input);
win_width = GetScreenWidth();
win_height = GetScreenHeight();
font_size = min(win_height/4, 30);
txt_width = MeasureText(txt, font_size);
if (txt_width > win_width)
{
float scale = txt_width/win_width;
font_size = font_size/scale;
txt_width = MeasureText(txt, font_size);
}
DrawText(txt, (win_width-txt_width)/2, win_height*4/6, font_size, DARKGRAY);
TraceLog(LOG_INFO, "input successfully drawn");
}
static void
redraw(void)
{
BeginDrawing();
ClearBackground(RAYWHITE);
draw_calc();
draw_input();
EndDrawing();
}
static void
add_input_digit(int digit)
{
current_input *= 10;
current_input += digit;
redraw();
}
static void
check_digit(int digit)
{
if (IsKeyPressed(KEY_ZERO + digit))
{
add_input_digit(digit);
TraceLog(LOG_INFO, "digit %d added to input", digit);
TraceLog(LOG_INFO, "input is now %d", current_input);
}
}
static void
check_digits(void)
{
for (int i = 0; i < 10; i++)
check_digit(i);
}
int
read_input(void)
{
TraceLog(LOG_INFO, "waiting for user input");
current_input = 0;
while (!WindowShouldClose())
{
PollInputEvents();
if (IsWindowResized())
redraw();
if (IsKeyPressed(KEY_ENTER))
return current_input;
if (IsKeyPressed(KEY_Q) || IsKeyPressed(KEY_A))
return DISP_QUIT;
if (IsKeyPressed(KEY_R) || IsKeyPressed(KEY_G))
return DISP_RELOAD;
if (IsKeyPressed(KEY_BACKSPACE))
{
current_input = current_input / 10;
redraw();
}
check_digits();
}
return DISP_QUIT;
}
void
display_res(bool, int)
{
}
void
destroy(void)
{
CloseWindow();
}
#ifndef NDEBUG
void *
pre_reload(void)
{
TraceLog(LOG_INFO, "pre-reload actions done");
return NULL;
}
void
post_reload(void *state)
{
(void) state;
TraceLog(LOG_INFO, "post-reload actions done");
}
#endif
|
