Changing Icon Type

[eva]

Following the discussion in: http://eab.abime.net/showthread.php?p=982493#post982493, I have not found a sensible way of changing the icon types for the icon archive at: http://aminet.net/package/pix/mwb/IconArchive short of having to use an icon editor, load each icon, change the type, save the icon, go to the shell and overwrite the .info type.

I looked up the specification of the different icon types on the Amiga and coded a small program that just changes the icon type of any .info file.

/**
***************************************************************************
**    Copyright (C) 2014 Wizardry and Steamworks - License: GNU GPLv3    **
***************************************************************************
** Provided an input type and an .info file, this program change the type 
** of the icon. This is useful for icon packs where .info files would have
** to be converted manually using an icon editor.
**
** Reference: http://krashan.ppa.pl/articles/amigaicons/
**/

#include <stdio.h>
#include <stdlib.h>

int main(int argc, char **argv) {
	FILE *fp; 
	long size;
	char *info;
	int type;

	if(argc < 3) {
		printf("SYNTAX: %s <type> <info file>\n", argv[0]);
		printf("TYPE: 1 - disk or volume\n");
		printf("      2 - drawer (folder)\n");
		printf("      3 - tool (executable)\n");
		printf("      4 - project (data file)\n");
		printf("      5 - trashcan\n");
		printf("      6 - device\n");
		printf("      7 - Kickstart ROM image\n");
		printf("      8 - an appicon (from an app)\n");
		return 1;
	}

	type = atoi(argv[1]);

	switch(type) {
		case 1: case 2: case 3: case 4:
		case 5: case 6: case 7: case 8:
		  break;
		default:
		  printf("Unknown icon type.\n");
		  return 1;
	}

	fp = fopen(argv[2], "rb");
	if(fp == NULL) {
		printf("The second argument must be an icon file.\n");
		return 1;
	}

	// read size
	fseek(fp, 0, SEEK_END);
	size = ftell(fp);
	rewind(fp);

	// allocate buffer and read
	info = (char *) calloc(size, sizeof(char));
	if(fread(info, 1, size, fp) != size) {
		printf("The file could not be read.\n");
		return 1;
	}
	fclose(fp);

	if((unsigned int)info[0] != 227 && (unsigned int)info[1] != 16) {
		printf("The file is not an icon file (info).\n");
		return 1;
	}

	// change the icon type
	info[48] = (char)type;

	// open file for write
	fp=fopen(argv[2], "wb");
	if(fp == NULL) {
		printf("The file could not be found anymore.\n");
		return 1;
	}

	// write the data
	fwrite(info, size, 1, fp);

	fclose(fp);
	free(info);
	return 0;
}

I have attached the LHA containing the binary - just copy "seticontype" from the archive to c:

The usage is very simple:

• open a shell
• change directory to where you have the .info file
• run: seticontype T icon.info where T is a type (printed out as reference when you run seticontype without arguments).
• the icon.info will be changed to type T
• you can then overwrite your old icon with the .info you just modified

Cheeries!

[PeterK]

I guess, you can do the same and much more with ProcessIcon option SIT (Set Icon Type) written by Dirk Stoecker. http://aminet.net/package/util/wb/ProcessIcon

[trumpy81]

@eva

I like the simplicity of your tool and it comes in very handy.

@PeterK
I like this tool also, but only if I have a need to change the bitplanes or other parameters of custom icons.

@Both
Thanks for the tool and links, much appreciated.

[PeterK]

Originally Posted by trumpy81

@eva ...

@PeterK ...

@Both

Both would be lovely, but I'm already too old ...