mirror of https://github.com/GNOME/gimp.git
216 lines
6.3 KiB
C
216 lines
6.3 KiB
C
/* palette.c GIMP plug-in to export palettes */
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/* This code should really be a GIMP built-in IMHO, but with a feature
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freeze in place I think this plug-in is a big win for 1.0 */
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/* All the work here so far is owned by Nick Lamb <njl195@ecs.soton.ac.uk>,
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and is distributed under the same license as the core GIMP components
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(ie GNU General Public License) */
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "gtk/gtk.h"
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#include "libgimp/gimp.h"
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#define PLUG_IN_NAME "plug_in_export_palette"
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/* Declare plug-in functions. */
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static void query (void);
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static void run (char *name, int nparams, GParam *param, int *nreturn_vals,
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GParam **return_vals);
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GPlugInInfo PLUG_IN_INFO = { NULL, NULL, query, run, };
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static int running= FALSE;
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static gchar *filename; /* Filename of palette file */
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MAIN ()
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static void query () {
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static GParamDef args[] =
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{
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{ PARAM_INT32, "run_mode", "Interactive, non-interactive" },
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{ PARAM_IMAGE, "image", "Input image" },
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{ PARAM_DRAWABLE, "drawable", "Input drawable" },
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{ PARAM_STRING, "filename", "Name of palette" }
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};
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static GParamDef *return_vals = NULL;
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static int nargs = sizeof (args) / sizeof (args[0]);
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static int nreturn_vals = 0;
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gimp_install_procedure (PLUG_IN_NAME,
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"Makes a GIMP palette from an indexed image",
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"Apply this to an INDEXED image to create a GIMP "
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"palette with the same colours. This allows you "
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"to later convert any image to that same "
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"palette, by picking it explicitly in the RGB "
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"to INDEXED conversion dialog.",
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"Nick Lamb",
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"Nick Lamb <njl195@ecs.soton.ac.uk>",
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"February 1998",
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"<Image>/Image/Save palette",
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"INDEXED*",
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PROC_PLUG_IN,
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nargs, nreturn_vals, args, return_vals);
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}
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static GStatusType export_palette(gint32 image_id);
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static void write_palette(FILE *fp, int count, guchar* rgb);
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static int palette_dialog();
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/* AFAIK This should be part of libgimp (sigh) */
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static gchar* gimp_gimprc_query(gchar *key) {
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GParam *return_vals;
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int nreturn_vals;
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gchar *value;
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return_vals = gimp_run_procedure ("gimp_gimprc_query", &nreturn_vals,
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PARAM_STRING, key, PARAM_END);
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value= g_strdup(return_vals[1].data.d_string);
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gimp_destroy_params(return_vals, nreturn_vals);
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return value;
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}
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/* Plug-in implementation */
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static void run (char *name, int nparams, GParam *param, int *nreturn_vals,
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GParam **return_vals) {
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static GParam values[1];
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GRunModeType run_mode;
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int length= 0;
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run_mode = param[0].data.d_int32;
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*nreturn_vals = 1;
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*return_vals = values;
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values[0].type = PARAM_STATUS;
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values[0].data.d_status = STATUS_CALLING_ERROR;
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if (strcmp (name, PLUG_IN_NAME) == 0) {
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switch (run_mode) {
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case RUN_INTERACTIVE:
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gimp_get_data(PLUG_IN_NAME, &length);
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filename= g_malloc(length + 1);
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gimp_get_data(PLUG_IN_NAME ":filename", filename);
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filename[length]= '\0';
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if (palette_dialog()) {
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length= strlen(filename);
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gimp_set_data(PLUG_IN_NAME, &length, sizeof(length));
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gimp_set_data(PLUG_IN_NAME ":filename", filename, length);
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} else {
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values[0].data.d_status = STATUS_EXECUTION_ERROR;
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return;
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}
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break;
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case RUN_NONINTERACTIVE:
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if (nparams == 4) {
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filename= g_strdup(param[3].data.d_string);
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} else {
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values[0].data.d_status = STATUS_CALLING_ERROR;
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return;
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}
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break;
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case RUN_WITH_LAST_VALS:
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gimp_get_data(PLUG_IN_NAME, &length);
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filename= g_malloc(length + 1);
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gimp_get_data(PLUG_IN_NAME ":filename", filename);
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filename[length]= '\0';
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break;
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default:
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break;
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}
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values[0].data.d_status = export_palette(param[1].data.d_int32);
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} else {
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values[0].data.d_status = STATUS_EXECUTION_ERROR;
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}
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}
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static GStatusType export_palette(gint32 image_id) {
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FILE *fp;
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gint count;
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guchar *palette;
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if (gimp_image_base_type(image_id) != 2)
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return STATUS_EXECUTION_ERROR;
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if ((fp= fopen(filename, "w")) == NULL)
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return STATUS_EXECUTION_ERROR;
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fprintf(fp, "GIMP Palette\n# Added by the Export Palette plug-in\n");
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palette= gimp_image_get_cmap(image_id, &count);
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write_palette(fp, count, palette);
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return STATUS_SUCCESS;
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}
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static void write_palette(FILE *fp, int count, guchar* rgb) {
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while (count > 0) {
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fprintf(fp, "%d %d %d\tUnknown\n", rgb[0], rgb[1], rgb[2]);
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rgb+= 3; --count;
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}
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}
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static void palette_close(GtkWidget *widget, GtkWidget **fs) {
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gtk_main_quit();
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}
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static void palette_ok(GtkWidget *widget, GtkWidget **fs) {
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g_free(filename);
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filename= strdup( gtk_file_selection_get_filename(
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GTK_FILE_SELECTION(fs)));
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running= TRUE;
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gtk_widget_destroy(GTK_WIDGET(fs));
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}
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static void palette_cancel(GtkWidget *widget, GtkWidget **fs) {
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gtk_widget_destroy(GTK_WIDGET(fs));
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}
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static int palette_dialog() {
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gchar **argv;
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gint argc;
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GtkWidget *dialog;
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gchar *directory, *data;
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argc = 1;
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argv = g_new (gchar *, 1);
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argv[0] = g_strdup ("export_palette");
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gtk_init (&argc, &argv);
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gtk_rc_parse (gimp_gtkrc ());
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data= gimp_gimprc_query("gimp_dir");
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directory= g_malloc(strlen(data) + 11);
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strcat(strcpy(directory, data), "/palettes/");
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g_free(data);
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dialog= gtk_file_selection_new("Export GIMP Palette");
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gtk_window_position (GTK_WINDOW (dialog), GTK_WIN_POS_MOUSE);
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if (*filename == '\0')
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gtk_file_selection_set_filename(GTK_FILE_SELECTION(dialog), directory);
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else
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gtk_file_selection_set_filename(GTK_FILE_SELECTION(dialog), filename);
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gtk_signal_connect(GTK_OBJECT(dialog), "destroy",
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(GtkSignalFunc) palette_close, NULL);
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gtk_signal_connect (GTK_OBJECT (GTK_FILE_SELECTION (dialog)->ok_button),
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"clicked", (GtkSignalFunc) palette_ok, dialog);
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gtk_signal_connect (GTK_OBJECT (GTK_FILE_SELECTION (dialog)->cancel_button),
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"clicked", (GtkSignalFunc) palette_cancel, dialog);
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gtk_widget_show(dialog);
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gtk_main();
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gdk_flush();
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return running;
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}
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