/* Shows how to draw with Cairo on SDL surfaces */
static void
draw_screen (SDL_Surface *screen)
{
cairo_t *cr;
cairo_status_t status;
/* Create a cairo drawing context, normalize it and draw a clock. */
SDL_LockSurface (screen); {
cr = cairosdl_create (screen);
cairo_scale (cr, screen->w, screen->h);
draw (cr);
status = cairo_status (cr);
cairosdl_destroy (cr);
}
SDL_UnlockSurface (screen);
SDL_Flip (screen);
/* Nasty nasty error handling. */
if (status != CAIRO_STATUS_SUCCESS) {
fprintf (stderr, "Unable to create or draw with a cairo context "
"for the screen: %s\n",
cairo_status_to_string (status));
exit (1);
}
}
int main(int argc, char **argv)
{
SDL_Surface *screen;
SDL_Event event;
PopplerDocument *document;
GError *error;
const char *pdf_file;
gchar *absolute, *uri;
int page_num = 1, num_pages;
cairo_t *cr;
double width, height;
float ofs;
PopplerPage *page;
SDL_TimerID t = 0;
SDL_Surface *pg_sf;
SDL_Surface *n1, *n2, *n1l, *n2l;
SDL_Surface **preld_sf = NULL;
SDL_Surface *src_sf = NULL;
int prerender = 1;
if (argc < 2) {
printf("Usage: %s input_file.pdf (pagenum)\n",argv[0]);
return 0;
}
pdf_file = argv[1];
if (argc > 2)
page_num = atoi(argv[2]);
g_type_init();
error = NULL;
n1 = IMG_Load("1_32.png");
n2 = IMG_Load("2_32.png");
if (g_path_is_absolute(pdf_file)) {
absolute = g_strdup(pdf_file);
} else {
gchar *dir = g_get_current_dir();
absolute = g_build_filename(dir, pdf_file, (gchar *) 0);
free(dir);
}
uri = g_filename_to_uri(absolute, NULL, &error);
free(absolute);
if (uri == NULL) {
printf("%s\n", error->message);
return 1;
}
document = poppler_document_new_from_file(uri, NULL, &error);
if (document == NULL) {
printf("%s\n", error->message);
return 1;
}
num_pages = poppler_document_get_n_pages(document);
if (page_num < 1 || page_num > num_pages) {
printf("page must be between 1 and %d\n", num_pages);
return 1;
}
page = poppler_document_get_page(document, 0);
if (page == NULL) {
printf("poppler fail: page not found\n");
return 1;
}
/* Initialize SDL, open a screen */
screen = init_screen(1024, 768, 32);
n1l = SDL_CreateRGBSurface(SDL_HWSURFACE | SDL_SRCALPHA,
screen->w,
32,
32,
0xff000000,
0x00ff0000, 0x0000ff00, 0x000000ff);
n2l = SDL_CreateRGBSurface(SDL_HWSURFACE | SDL_SRCALPHA,
screen->w,
32,
32,
0xff000000,
0x00ff0000, 0x0000ff00, 0x000000ff);
make_nyans(n1l, n1);
make_nyans(n2l, n2);
pg_sf = SDL_CreateRGBSurface(SDL_HWSURFACE | 0,
screen->w,
screen->h,
32,
CAIROSDL_RMASK,
CAIROSDL_GMASK, CAIROSDL_BMASK, 0);
cr = cairosdl_create(pg_sf);
poppler_page_get_size(page, &width, &height);
g_object_unref(page);
cairo_scale(cr, screen->w / width, screen->h / height);
draw_page(pg_sf, cr, document, page_num);
SDL_BlitSurface(pg_sf, NULL, screen, NULL);
SDL_Flip(screen);
if (prerender) {
int i;
preld_sf = malloc(sizeof(SDL_Surface *) * num_pages);
for (i = 0; i < num_pages; i++) {
preld_sf[i] = SDL_CreateRGBSurface(SDL_HWSURFACE | 0,
screen->w,
screen->h,
32,
CAIROSDL_RMASK,
CAIROSDL_GMASK,
CAIROSDL_BMASK, 0);
draw_page(pg_sf, cr, document, i + 1);
SDL_BlitSurface(pg_sf, NULL, preld_sf[i], NULL);
}
}
while (SDL_WaitEvent(&event)) {
int new_page = 0;
switch (event.type) {
case SDL_KEYDOWN:
if (event.key.keysym.sym == SDLK_ESCAPE) {
goto done;
} else if (event.key.keysym.sym == SDLK_SPACE) {
new_page = 1;
++page_num;
} else if (event.key.keysym.sym == SDLK_RIGHT) {
new_page = 1;
++page_num;
} else if (event.key.keysym.sym == SDLK_LEFT) {
new_page = 1;
--page_num;
} else if (event.key.keysym.sym == SDLK_PAGEUP) {
new_page = 1;
--page_num;
} else if (event.key.keysym.sym == SDLK_PAGEDOWN) {
new_page = 1;
++page_num;
}
if (new_page) {
SDL_Rect sr, sd;
float x;
SDL_RemoveTimer(t);
if (page_num > num_pages)
page_num = num_pages;
if (page_num < 1)
page_num = 1;
src_sf = pg_sf;
if (!prerender)
draw_page(pg_sf, cr, document,
page_num);
else {
src_sf = preld_sf[page_num - 1];
}
SDL_BlitSurface(src_sf, NULL, screen, NULL);
ofs = num_pages - page_num;
ofs /= num_pages;
x = n1l->w;
x *= ofs;
sr.x = x;
sr.w = n1l->w - x;
sr.h = n1l->h;
sr.y = 0;
#ifndef NYAN_TOP
sd.y = screen->h - n1l->h;
#else
sd.y = 0;
#endif
sd.w = sr.w;
sd.x = 0;
sd.h = sr.h;
SDL_BlitSurface(page_num & 1 ? n1l : n2l, &sr,
screen, &sd);
SDL_Flip(screen);
t = SDL_AddTimer(1000, timer_cb, NULL);
}
break;
case SDL_QUIT:
goto done;
case SDL_USEREVENT:
SDL_BlitSurface(src_sf, NULL, screen, NULL);
SDL_Flip(screen);
break;
default:
break;
}
}
done:
SDL_FreeSurface(screen);
SDL_Quit();
return 0;
}
int main(int argc, char *argv[]) {
SDL_Surface *screen;
GError *error = NULL;
RsvgHandle *handle;
struct svgviewer_view vw;
char *filename;
//const char *output_filename = argv[2];
cairo_surface_t *surface;
cairo_t *cr;
cairo_t *cr2;
cairo_status_t status;
int c;
int rerender = 0;
SDL_VideoInfo* info;
vw.zoom = 1;
/* Process options */
while (1) {
int option_index = 0;
c = getopt_long (argc, argv, "d:v:",
long_options, &option_index);
/* Detect the end of the options. */
if (c == -1) break;
switch (c) {
case 0:
break;
case 'z':
errno = 0;
vw.zoom = strtod(optarg, NULL);
DEBUG("Zoom set to %g\n", vw.zoom);
if (errno) FAIL("Usage: -z or --zoom requires a floating point argument");
break;
default:
abort();
};
}
if (argc != optind+1) FAIL("Usage: %s OPTIONS input_file.svg\n", argv[0]);
filename = argv[optind];
g_type_init();
rsvg_set_default_dpi(72.0);
handle = rsvg_handle_new_from_file(filename, &error);
if (error != NULL)
FAIL(error->message);
rsvg_handle_get_dimensions(handle, &dim);
vw.x = 0; vw.y = 0;
vw.zoom = 1;
/* Initialize SDL */
if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER) < 0) {
fprintf(stderr, "Unable to initialize SDL: %s\n",
SDL_GetError());
exit(1);
}
int videomodeflags;
if (fullscreen_flag) {
screen = SDL_SetVideoMode(0, 0, 32,
videomodeflags =
SDL_FULLSCREEN | SDL_SWSURFACE | SDL_RESIZABLE);
} else {
const SDL_VideoInfo* info = SDL_GetVideoInfo();
if ((dim.width >= info->current_w) ||
(dim.height >= info->current_h)) {
screen = SDL_SetVideoMode(0, 0, 32,
videomodeflags =
SDL_SWSURFACE | SDL_RESIZABLE);
} else {
screen = SDL_SetVideoMode(dim.width, dim.height, 32,
videomodeflags =
SDL_SWSURFACE | SDL_RESIZABLE);
}
}
if (screen == NULL) {
fprintf(stderr, "Unable to set video mode: %s\n", SDL_GetError());
exit(1);
}
vw.pixel_width = screen->w;
vw.pixel_height = screen->h;
surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, vw.pixel_width, vw.pixel_height);
cr2 = cairo_create (surface);
//cairo_translate(cr2, ((double)dim.width)/-2, ((double)dim.height)/-2);
//surface = cairo_pdf_surface_create (output_filename, width, height);
// SDL_LockSurface(screen);
//cairo_scale (cr, screen->w, screen->h);
cairo_save(cr2);
view_transform(cr2, &vw);
rsvg_handle_render_cairo(handle, cr2);
status = cairo_status(cr2);
if (status) FAIL(cairo_status_to_string(status));
cairo_restore(cr2);
cr = cairosdl_create(screen);
// cairo_set_source_rgb(cr, 1, 1, 1);
// cairo_paint(cr);
cairo_save(cr);
//cairo_scale(cr, .5, .5);
//cairo_translate(cr, width/2, height/2 );
//cairo_rotate( cr, 3.14/2 );
//cairo_translate(cr, -width/2, -height/2 );
cairo_set_source_surface (cr, surface, 0, 0);
cairo_paint(cr);
cairo_restore(cr);
status = cairo_status(cr);
if (status)
FAIL(cairo_status_to_string(status));
// SDL_UnlockSurface(screen);
SDL_UpdateRect(screen, 0, 0, 0, 0);
{
SDL_Event event;
while (SDL_WaitEvent(&event)) {
switch (event.type) {
case SDL_KEYDOWN:
switch (event.key.keysym.sym) {
case SDLK_UP:
vw.y -= 0.1 / vw.zoom;
rerender = 1;
break;
case SDLK_DOWN:
vw.y += 0.1 / vw.zoom;
rerender = 1;
break;
case SDLK_LEFT:
vw.x -= 0.1 / vw.zoom;
rerender = 1;
break;
case SDLK_RIGHT:
vw.x += 0.1 / vw.zoom;
rerender = 1;
break;
case SDLK_a:
vw.zoom *= 1.025;
rerender = 1;
break;
case SDLK_z:
vw.zoom /= 1.025;
rerender = 1;
break;
case SDLK_ESCAPE:
goto exit;
default:
break;
}
break;
case SDL_VIDEORESIZE:
{
vw.pixel_width = event.resize.w;
vw.pixel_height = event.resize.h;
cairo_destroy(cr2);
cairo_surface_destroy(surface);
surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, vw.pixel_width, vw.pixel_height);
cr2 = cairo_create(surface);
//cairo_translate(cr2, ((double)dim.width)/-2, ((double)dim.height)/-2);
cairo_save(cr2);
view_transform(cr2, &vw);
rsvg_handle_render_cairo(handle, cr2);
cairo_restore(cr2);
screen = SDL_SetVideoMode(event.resize.w, event.resize.h, 32, videomodeflags);
cairosdl_destroy(cr);
cr = cairosdl_create(screen);
cairo_save(cr);
cairo_set_source_surface(cr, surface, 0, 0);
cairo_paint(cr);
cairo_restore(cr);
};
break;
case SDL_QUIT:
goto exit;
default:
break;
}
if (rerender) {
cairo_save(cr2);
view_transform(cr2, &vw);
rsvg_handle_render_cairo(handle, cr2);
status = cairo_status(cr2);
if (status) FAIL(cairo_status_to_string(status));
cairo_restore(cr2);
cairo_set_source_surface(cr, surface, 0, 0);
cairo_paint(cr);
rerender = 0;
}
SDL_UpdateRect(screen, 0, 0, 0, 0);
};
};
exit:
cairosdl_destroy(cr);
if (status)
FAIL(cairo_status_to_string(status));
cairo_destroy (cr2);
cairo_surface_destroy(surface);
SDL_Quit();
exit(EXIT_SUCCESS);
}
