157 lines
3.3 KiB
C
157 lines
3.3 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <stdarg.h>
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#include <string.h>
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#include <Imlib2.h>
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/* macros */
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#define ARRLEN(a) (sizeof(a) / sizeof((a)[0]))
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/* globals */
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static unsigned long palette[16] = {0};
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static unsigned int palette_size = 0;
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static unsigned int run_column = 0;
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static unsigned int icon_sizes[16] = {0};
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static unsigned int icon_sizes_size = 0;
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/* functions */
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static void error(int eval, int err, const char *fmt, ...)
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{
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va_list ap;
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fflush(stdout);
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va_start(ap, fmt);
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if (fmt)
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vfprintf(stderr, fmt, ap);
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va_end(ap);
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if (err)
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fprintf(stderr, "%s%s", fmt ? ": " : "", strerror(err));
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fputc('\n', stderr);
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if (eval)
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exit(eval);
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}
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static unsigned long color_to_ulong(Imlib_Color color)
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{
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return (color.alpha << 24 & 0xff000000) |
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(color.red << 16 & 0x00ff0000) |
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(color.green << 8 & 0x0000ff00) |
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(color.blue & 0x000000ff);
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}
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static int to_palette(unsigned long color)
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{
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unsigned int i;
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for (i = 0; i < palette_size; i++) {
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if (palette[i] == color)
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return i;
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}
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if (palette_size + 1 == 16)
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error(EXIT_FAILURE, 0, "Error: More than 16 colors in palette");
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palette[palette_size] = color;
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return palette_size++;
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}
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static void print_run(int color, unsigned int run_length)
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{
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while (run_length > 0) {
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int x = run_length / 16 >= 1 ? 16 : run_length;
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printf("0x%02x, ", (x - 1) << 4 | color);
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run_length -= x;
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if (++run_column % 12 == 0)
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printf("\n\t");
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}
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}
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static void print_palette(void)
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{
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unsigned int i;
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printf("static const unsigned long icon_colors[] = {\n\t");
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for (i = 0; i < palette_size; i++) {
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printf("0x%08lx, ", palette[i]);
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if (i % 4 == 3)
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printf("\n\t");
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}
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printf("\n};\n\n");
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}
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static void print_icon_array(void)
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{
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unsigned int i;
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printf("static const icon_data_t icons[] = {\n");
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for (i = 0; i < icon_sizes_size; i++)
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printf("\tICON_(%d),\n", icon_sizes[i]);
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printf("};\n\n");
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}
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static unsigned int print_encoded_image(const char *path)
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{
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Imlib_Image image;
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Imlib_Color color;
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unsigned int width, height, x, y;
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unsigned int run_length = 1;
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int currentcolor = 0;
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int lastcolor = -1;
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image = imlib_load_image(path);
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if (image == NULL)
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error(EXIT_FAILURE, 0, "Error loading image: %s", path);
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imlib_context_set_image(image);
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width = imlib_image_get_width();
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height = imlib_image_get_height();
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if (width != height)
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error(EXIT_FAILURE, 0, "Image is not square: %s", path);
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printf("static const unsigned char icon_data_%d[] = {\n\t", width);
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for (y = 0; y < height; y++) {
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for (x = 0; x < width; x++) {
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imlib_image_query_pixel(x, y, &color);
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currentcolor = to_palette(color_to_ulong(color));
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if (currentcolor != lastcolor) {
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if (lastcolor != -1)
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print_run(lastcolor, run_length);
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run_length = 1;
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} else {
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run_length++;
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}
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lastcolor = currentcolor;
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}
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}
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print_run(lastcolor, run_length);
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printf("\n};\n\n");
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imlib_free_image();
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return width;
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}
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int main(int argc, char **argv)
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{
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unsigned int img_size = 0;
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unsigned int i;
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if (argc < 2)
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error(EXIT_FAILURE, 0, "No icons provided");
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else if (argc-1 > ARRLEN(icon_sizes))
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error(EXIT_FAILURE, 0, "Too many icons");
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for (i = 1; i < argc; i++) {
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img_size = print_encoded_image(argv[i]);
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run_column = 0;
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icon_sizes[icon_sizes_size++] = img_size;
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}
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print_palette();
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print_icon_array();
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return EXIT_SUCCESS;
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}
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