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
|
/*
* Copyright 2012 The Emscripten Authors. All rights reserved.
* Emscripten is available under two separate licenses, the MIT license and the
* University of Illinois/NCSA Open Source License. Both these licenses can be
* found in the LICENSE file.
*/
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <SDL/SDL.h>
#include <SDL/SDL_ttf.h>
#include <emscripten.h>
#include <emscripten/html5.h>
int main(int argc, char **argv) {
#ifdef __EMSCRIPTEN__
// include GL stuff, to check that we can compile hybrid 2d/GL apps
extern void glBegin(int mode);
extern void glBindBuffer(int target, int buffer);
if (argc == 9876) {
glBegin(0);
glBindBuffer(0, 0);
}
#endif
SDL_Init(SDL_INIT_VIDEO);
SDL_Surface *screen = SDL_SetVideoMode(600, 450, 32, SDL_HWSURFACE);
printf("Init: %d\n", TTF_Init());
TTF_Font *font = TTF_OpenFont("sans-serif", 40);
printf("Font: %p\n", font);
SDL_Color color = { 0xff, 0x99, 0x00, 0xff };
SDL_Surface *text = TTF_RenderText_Solid(font, "hello orange world", color);
SDL_Color color2 = { 0xbb, 0, 0xff, 0xff };
SDL_Surface *text2 = TTF_RenderText_Solid(font, "a second line, purple", color2);
// render
SDL_Rect dest = { 0, 50, 0, 0 };
SDL_BlitSurface (text, NULL, screen, NULL);
dest.y = 100;
SDL_BlitSurface (text2, NULL, screen, &dest);
// fill stuff
SDL_Rect rect = { 200, 200, 175, 125 };
SDL_FillRect(screen, &rect, SDL_MapRGBA(screen->format, 0x22, 0x22, 0xff, 0xff));
SDL_Flip(screen);
SDL_LockSurface(screen);
int width, height;
emscripten_get_canvas_element_size("#canvas", &width, &height);
if (width != 600 && height != 450)
{
printf("error: wrong width/height\n");
abort();
}
int sum = 0;
for (int i = 0; i < screen->h; i++) {
sum += *((char*)screen->pixels + i*screen->w*4 + i*4 + 0);
}
printf("Sum: %d\n", sum);
printf("you should see two lines of text in different colors and a blue rectangle\n");
SDL_UnlockSurface(screen);
SDL_Quit();
printf("done.\n");
assert(sum > 3000 && sum < 5000); // varies a little on different browsers, font differences?
return 0;
}
|
