This repository has been archived by the owner on Feb 11, 2021. It is now read-only.
/
testcursor.c
224 lines (199 loc) · 5.41 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
#include <stdio.h>
#include <stdlib.h>
#include "SDL.h"
/* This is an example 16x16 cursor
top left : black
top right : inverted color or black
bottom left: white
bottom right: transparent
(swap left and right for different endianness)
*/
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
Uint16 cursor_data[16] = {
0xffff,
0xffff,
0xffff,
0xffff,
0xffff,
0xffff,
0xffff,
0xffff,
0x0000,
0x0000,
0x0000,
0x0000,
0x0000,
0x0000,
0x0000,
0x0000
34
35
};
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
Uint16 cursor_mask[16] = {
0xff00,
0xff00,
0xff00,
0xff00,
0xff00,
0xff00,
0xff00,
0xff00,
0xff00,
0xff00,
0xff00,
0xff00,
0xff00,
0xff00,
0xff00,
0xff00
56
57
};
58
59
/* another test cursor: smaller than 16x16, and with an odd height */
60
61
62
63
Uint8 small_cursor_data[11] =
{ 0x00, 0x18, 0x08, 0x38, 0x44, 0x54, 0x44, 0x38, 0x20, 0x20, 0x00 };
Uint8 small_cursor_mask[11] =
{ 0x3C, 0x3C, 0x3C, 0x7C, 0xC6, 0xC6, 0xC6, 0x7C, 0x78, 0x70, 0x70 };
64
65
66
/* XPM */
static const char *arrow[] = {
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
/* width height num_colors chars_per_pixel */
" 32 32 3 1",
/* colors */
"X c #000000",
". c #ffffff",
" c None",
/* pixels */
"X ",
"XX ",
"X.X ",
"X..X ",
"X...X ",
"X....X ",
"X.....X ",
"X......X ",
"X.......X ",
"X........X ",
"X.....XXXXX ",
"X..X..X ",
"X.X X..X ",
"XX X..X ",
"X X..X ",
" X..X ",
" X..X ",
" X..X ",
" XX ",
" ",
" ",
" ",
" ",
" ",
" ",
" ",
" ",
" ",
" ",
" ",
" ",
" ",
"0,0"
107
108
};
109
110
static SDL_Cursor *
create_arrow_cursor()
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
int i, row, col;
Uint8 data[4 * 32];
Uint8 mask[4 * 32];
int hot_x, hot_y;
i = -1;
for (row = 0; row < 32; ++row) {
for (col = 0; col < 32; ++col) {
if (col % 8) {
data[i] <<= 1;
mask[i] <<= 1;
} else {
++i;
data[i] = mask[i] = 0;
}
switch (arrow[4 + row][col]) {
case 'X':
data[i] |= 0x01;
mask[i] |= 0x01;
break;
case '.':
mask[i] |= 0x01;
break;
case ' ':
break;
}
}
139
}
140
141
sscanf(arrow[4 + row], "%d,%d", &hot_x, &hot_y);
return SDL_CreateCursor(data, mask, 32, 32, hot_x, hot_y);
142
143
144
}
145
146
int
main(int argc, char *argv[])
147
{
148
149
150
151
152
153
154
155
156
157
158
SDL_Surface *screen;
SDL_bool quit = SDL_FALSE, first_time = SDL_TRUE;
SDL_Cursor *cursor[3];
int current;
/* Load the SDL library */
if (SDL_Init(SDL_INIT_VIDEO) < 0) {
fprintf(stderr, "Couldn't initialize SDL: %s\n", SDL_GetError());
return (1);
}
159
screen = SDL_SetVideoMode(640, 480, 8, SDL_ANYFORMAT);
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
if (screen == NULL) {
fprintf(stderr, "Couldn't initialize video mode: %s\n",
SDL_GetError());
return (1);
}
SDL_FillRect(screen, NULL, 0x664422);
cursor[0] = SDL_CreateCursor((Uint8 *) cursor_data, (Uint8 *) cursor_mask,
16, 16, 8, 8);
if (cursor[0] == NULL) {
fprintf(stderr, "Couldn't initialize test cursor: %s\n",
SDL_GetError());
SDL_Quit();
return (1);
}
cursor[1] = create_arrow_cursor();
if (cursor[1] == NULL) {
fprintf(stderr, "Couldn't initialize arrow cursor: %s\n",
SDL_GetError());
SDL_FreeCursor(cursor[0]);
SDL_Quit();
return (1);
}
cursor[2] = SDL_CreateCursor(small_cursor_data, small_cursor_mask,
8, 11, 3, 5);
if (cursor[2] == NULL) {
fprintf(stderr, "Couldn't initialize test cursor: %s\n",
SDL_GetError());
SDL_Quit();
return (1);
}
current = 0;
SDL_SetCursor(cursor[current]);
while (!quit) {
SDL_Event event;
while (SDL_PollEvent(&event)) {
switch (event.type) {
case SDL_MOUSEBUTTONDOWN:
current = (current + 1) % 3;
SDL_SetCursor(cursor[current]);
break;
case SDL_KEYDOWN:
if (event.key.keysym.sym == SDLK_ESCAPE) {
quit = SDL_TRUE;
}
break;
case SDL_QUIT:
quit = SDL_TRUE;
break;
}
}
SDL_Flip(screen);
SDL_Delay(1);
}
SDL_FreeCursor(cursor[0]);
SDL_FreeCursor(cursor[1]);
220
SDL_FreeCursor(cursor[2]);
221
222
223
SDL_Quit();
return (0);
224
}