Aren/toaruos
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Support scaling images in cat-img to fit line height

Browse Source
This commit is contained in:
Kevin Lange 2017-01-07 17:07:08 +09:00
parent 8c93afb03e
commit cf86e1732d
1 changed files with 84 additions and 35 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

119
userspace/extra/cat-img.c
View File

@ -4,6 +4,7 @@
* Copyright (C) 2016 Kevin Lange
*/
#include <stdio.h>
#include <getopt.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <termios.h>
@ -32,59 +33,107 @@ void unraw_output(void) {
tcsetattr(fileno(stdin), TCSAFLUSH, &new);
}
int usage(char * argv[]) {
printf(
"usage: %s [-?ns] [path]\n"
"\n"
" -n \033[3mdon't print a new line after image\033[0m\n"
" -s \033[3mscale to cell height (up or down)\033[0m\n"
" -? \033[3mshow this help text\033[0m\n"
"\n", argv[0]);
return 1;
}
int main (int argc, char * argv[]) {
if (!isatty(STDIN_FILENO) || !isatty(STDOUT_FILENO)) {
fprintf(stderr, "Can't cat-img to a non-terminal.\n");
exit(1);
}
int i = 1;
int opt;
int no_newline = 0;
if (!strcmp(argv[1],"-n")) {
i++;
no_newline = 1;
int scale_to_cell_height = 0;
while ((opt = getopt(argc, argv, "?ns")) != -1) {
switch (opt) {
case '?':
return usage(argv);
case 'n':
no_newline = 1;
break;
case 's':
scale_to_cell_height = 1;
break;
}
}
if (optind >= argc ) {
return usage(argv);
}
int w, h;
get_cell_sizes(&w, &h);
sprite_t image;
load_sprite_png(&image, argv[i]);
int width_in_cells = image.width / w;
if (image.width % w) width_in_cells++;
while (optind < argc) {
sprite_t * image = calloc(sizeof(sprite_t),1);
if (load_sprite_png(image, argv[optind])) {
free(image);
optind++;
continue;
}
int height_in_cells = image.height / h;
if (image.height % h) height_in_cells++;
sprite_t * source = image;
raw_output();
printf("\033[?25l");
if (scale_to_cell_height) {
int new_width = (h * image->width) / image->height;
source = create_sprite(new_width,h,1);
gfx_context_t * g = init_graphics_sprite(source);
draw_fill(g, 0x00000000);
draw_sprite_scaled(g, image, 0, 0, new_width, h);
sprite_free(image);
}
for (int y = 0; y < height_in_cells; y++) {
for (int x = 0; x < width_in_cells; x++) {
printf("\033Ts");
uint32_t * tmp = malloc(sizeof(uint32_t) * w * h);
for (int yy = 0; yy < h; yy++) {
for (int xx = 0; xx < w; xx++) {
if (x*w + xx >= image.width || y*h + yy >= image.height) {
tmp[yy * w + xx] = rgba(0,0,0,TERM_DEFAULT_OPAC);
} else {
uint32_t data = alpha_blend_rgba(
rgba(0,0,0,TERM_DEFAULT_OPAC),
premultiply(image.bitmap[(x*w+xx)+(y*h+yy)*image.width]));
tmp[yy * w + xx] = data;
int width_in_cells = source->width / w;
if (source->width % w) width_in_cells++;
int height_in_cells = source->height / h;
if (source->height % h) height_in_cells++;
raw_output();
printf("\033[?25l");
for (int y = 0; y < height_in_cells; y++) {
for (int x = 0; x < width_in_cells; x++) {
printf("\033Ts");
uint32_t * tmp = malloc(sizeof(uint32_t) * w * h);
for (int yy = 0; yy < h; yy++) {
for (int xx = 0; xx < w; xx++) {
if (x*w + xx >= source->width || y*h + yy >= source->height) {
tmp[yy * w + xx] = rgba(0,0,0,TERM_DEFAULT_OPAC);
} else {
uint32_t data = alpha_blend_rgba(
rgba(0,0,0,TERM_DEFAULT_OPAC),
premultiply(source->bitmap[(x*w+xx)+(y*h+yy)*source->width]));
tmp[yy * w + xx] = data;
}
}
}
fwrite(tmp, sizeof(uint32_t) * w * h, 1, stdout);
free(tmp);
fflush(stdout);
}
if (y != height_in_cells - 1 || !no_newline) {
printf("\r\n");
}
fwrite(tmp, sizeof(uint32_t) * w * h, 1, stdout);
free(tmp);
fflush(stdout);
}
if (y != height_in_cells - 1 || !no_newline) {
printf("\r\n");
}
}
printf("\033[?25h");
unraw_output();
fflush(stdout);
sprite_free(source);
printf("\033[?25h");
unraw_output();
fflush(stdout);
optind++;
}
return 0;
}