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#include "art.h"
#include "vectorimage.h"
#define SAVING 1
#if SAVING
static void save_buffer(unsigned char *buffer, uint width, uint height, const char *filename);
#include <gdk-pixbuf/gdk-pixbuf.h>
#include <png.h>
#include <stdio.h>
static gboolean
pixbuf_save_to_file(const GdkPixbuf *pixbuf, const char *file_name) {
FILE *handle;
unsigned char *buffer;
gboolean has_alpha;
int width, height, depth, rowstride;
guchar *pixels;
png_structp png_ptr;
png_infop info_ptr;
png_text text[2];
int i;
g_return_val_if_fail(pixbuf != NULL, FALSE);
g_return_val_if_fail(file_name != NULL, FALSE);
g_return_val_if_fail(file_name[0] != '\0', FALSE);
handle = fopen(file_name, "wb");
if (handle == NULL) {
return FALSE;
}
png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
if (png_ptr == NULL) {
fclose(handle);
return FALSE;
}
info_ptr = png_create_info_struct(png_ptr);
if (info_ptr == NULL) {
png_destroy_write_struct(&png_ptr, (png_infopp)NULL);
fclose(handle);
return FALSE;
}
if (setjmp(png_ptr->jmpbuf)) {
png_destroy_write_struct(&png_ptr, &info_ptr);
fclose(handle);
return FALSE;
}
png_init_io(png_ptr, handle);
has_alpha = gdk_pixbuf_get_has_alpha(pixbuf);
width = gdk_pixbuf_get_width(pixbuf);
height = gdk_pixbuf_get_height(pixbuf);
depth = gdk_pixbuf_get_bits_per_sample(pixbuf);
pixels = gdk_pixbuf_get_pixels(pixbuf);
rowstride = gdk_pixbuf_get_rowstride(pixbuf);
png_set_IHDR(png_ptr, info_ptr, width, height,
depth, PNG_COLOR_TYPE_RGB_ALPHA,
PNG_INTERLACE_NONE,
PNG_COMPRESSION_TYPE_DEFAULT,
PNG_FILTER_TYPE_DEFAULT);
/* Some text to go with the png image */
text[0].key = "Title";
text[0].text = (char *) file_name;
text[0].compression = PNG_TEXT_COMPRESSION_NONE;
text[1].key = "Software";
text[1].text = "Nautilus Thumbnail";
text[1].compression = PNG_TEXT_COMPRESSION_NONE;
png_set_text(png_ptr, info_ptr, text, 2);
/* Write header data */
png_write_info(png_ptr, info_ptr);
/* if there is no alpha in the data, allocate buffer to expand into */
if (has_alpha) {
buffer = NULL;
} else {
buffer = (unsigned char *)g_malloc(4 * width);
}
/* pump the raster data into libpng, one scan line at a time */
for (i = 0; i < height; i++) {
if (has_alpha) {
png_bytep row_pointer = pixels;
png_write_row(png_ptr, row_pointer);
} else {
/* expand RGB to RGBA using an opaque alpha value */
int x;
unsigned char *buffer_ptr = buffer;
unsigned char *source_ptr = pixels;
for (x = 0; x < width; x++) {
*buffer_ptr++ = *source_ptr++;
*buffer_ptr++ = *source_ptr++;
*buffer_ptr++ = *source_ptr++;
*buffer_ptr++ = 255;
}
png_write_row(png_ptr, (png_bytep) buffer);
}
pixels += rowstride;
}
png_write_end(png_ptr, info_ptr);
png_destroy_write_struct(&png_ptr, &info_ptr);
g_free(buffer);
fclose(handle);
return TRUE;
}
static void
save_buffer(unsigned char *buffer, uint width, uint height, const char *filename) {
GdkPixbuf *pixbuf;
g_type_init();
pixbuf = gdk_pixbuf_new_from_data(buffer,
GDK_COLORSPACE_RGB,
TRUE,
8,
width, height,
width * 4,
NULL, NULL);
pixbuf_save_to_file(pixbuf, filename);
gdk_pixbuf_unref(pixbuf);
}
#endif
int main(int argc, char *argv[]) {
if (argc < 2) {
printf("Usage: %s <file>\n", argv[0]);
exit(0);
}
int fnamelen = strlen(argv[1]);
char *fname = (char *)malloc(fnamelen + 1);
strcpy(fname, argv[1]);
fname[fnamelen-3] = 'p';
fname[fnamelen-2] = 'n';
fname[fnamelen-1] = 'g';
FILE *in = fopen(argv[1], "r");
fseek(in, 0, SEEK_END);
uint32 len = ftell(in);
byte *buf = (byte *)malloc(len);
fseek(in, 0, SEEK_SET);
fread(buf, len, 1, in);
fclose(in);
bool success;
Sword25::VectorImage img(buf, len, success);
img.render(img.getWidth(), img.getHeight());
#if SAVING
save_buffer(img.getPixelData(), img.getWidth(), img.getHeight(), fname);
#endif
return 0;
}
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