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- /**
- * aa.c version 1.0
- * A plugin that uses libaa (ftp://ftp.ta.jcu.cz/pub/aa) to save images as
- * ASCII.
- * NOTE: This plugin *requires* aalib 1.2 or later. Earlier versions will
- * not work.
- * Code copied from all over the GIMP source.
- * Tim Newsome <nuisance@cmu.edu>
- */
-
- #include "config.h"
-
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
-
- #include <aalib.h>
-
- #include <gtk/gtk.h>
-
- #include <libgimp/gimp.h>
- #include <libgimp/gimpui.h>
-
- #include "libgimp/stdplugins-intl.h"
-
- /*
- * Declare some local functions.
- */
- static void query (void);
- static void run (gchar *name,
- gint nparams,
- GimpParam *param,
- gint *nreturn_vals,
- GimpParam **return_vals);
- static gboolean aa_savable (gint32 drawable_ID);
- static gboolean save_aa (gint output_type,
- gchar *filename,
- gint32 image,
- gint32 drawable);
- static void gimp2aa (gint32 image,
- gint32 drawable_ID,
- aa_context *context);
-
- static gint type_dialog (int selected);
- static void type_dialog_toggle_update (GtkWidget *widget,
- gpointer data);
- static void type_dialog_cancel_callback (GtkWidget *widget,
- gpointer data);
-
- /*
- * Some global variables.
- */
-
- GimpPlugInInfo PLUG_IN_INFO =
- {
- NULL, /* init_proc */
- NULL, /* quit_proc */
- query, /* query_proc */
- run, /* run_proc */
- };
-
- /**
- * Type the user selected. (Global for easier UI coding.)
- */
- static gint selected_type = 0;
-
-
- MAIN ()
-
- static void
- query (void)
- {
- static GimpParamDef save_args[] =
- {
- {GIMP_PDB_INT32, "run_mode", "Interactive, non-interactive"},
- {GIMP_PDB_IMAGE, "image", "Input image"},
- {GIMP_PDB_DRAWABLE, "drawable", "Drawable to save"},
- {GIMP_PDB_STRING, "filename", "The name of the file to save the image in"},
- {GIMP_PDB_STRING, "raw_filename", "The name entered"},
- {GIMP_PDB_STRING, "file_type", "File type to use"}
- };
- static gint nsave_args = sizeof(save_args) / sizeof(save_args[0]);
-
- gimp_install_procedure ("file_aa_save",
- "Saves files in various text formats",
- "Saves files in various text formats",
- "Tim Newsome <nuisance@cmu.edu>",
- "Tim Newsome <nuisance@cmu.edu>",
- "1997",
- "<Save>/AA",
- "GRAY*", /* support grayscales */
- GIMP_PLUGIN,
- nsave_args, 0,
- save_args, NULL);
-
- gimp_register_save_handler ("file_aa_save",
- "ansi,txt,text,html",
- "");
- }
-
- /**
- * Searches aa_formats defined by aalib to find the index of the type
- * specified by string.
- * -1 means it wasn't found.
- */
- static int
- get_type_from_string (gchar *string)
- {
- gint type = 0;
- aa_format **p = aa_formats;
-
- while (*p && strcmp ((*p)->formatname, string))
- {
- p++;
- type++;
- }
-
- if (*p == NULL)
- return -1;
-
- return type;
- }
-
- static void
- run (gchar *name,
- gint nparams,
- GimpParam *param,
- gint *nreturn_vals,
- GimpParam **return_vals)
- {
- static GimpParam values[2];
- GimpRunModeType run_mode;
- GimpPDBStatusType status = GIMP_PDB_SUCCESS;
- gint output_type = 0;
- static int last_type = 0;
- gint32 image_ID;
- gint32 drawable_ID;
- GimpExportReturnType export = GIMP_EXPORT_CANCEL;
-
- /* Set us up to return a status. */
- *nreturn_vals = 1;
- *return_vals = values;
- values[0].type = GIMP_PDB_STATUS;
- values[0].data.d_status = GIMP_PDB_EXECUTION_ERROR;
-
- run_mode = param[0].data.d_int32;
- image_ID = param[1].data.d_int32;
- drawable_ID = param[2].data.d_int32;
-
- /* eventually export the image */
- switch (run_mode)
- {
- case GIMP_RUN_INTERACTIVE:
- case GIMP_RUN_WITH_LAST_VALS:
- INIT_I18N_UI();
- gimp_ui_init ("aa", FALSE);
- export = gimp_export_image (&image_ID, &drawable_ID, "AA",
- (GIMP_EXPORT_CAN_HANDLE_GRAY |
- GIMP_EXPORT_CAN_HANDLE_ALPHA ));
- if (export == GIMP_EXPORT_CANCEL)
- {
- values[0].data.d_status = GIMP_PDB_CANCEL;
- return;
- }
- break;
- default:
- INIT_I18N();
- break;
- }
-
- if (!aa_savable (drawable_ID))
- {
- status = GIMP_PDB_CALLING_ERROR;
- }
-
- if (status == GIMP_PDB_SUCCESS)
- {
- switch (run_mode)
- {
- case GIMP_RUN_INTERACTIVE:
- gimp_get_data ("file_aa_save", &last_type);
- output_type = type_dialog (last_type);
- if (output_type < 0)
- status = GIMP_PDB_CANCEL;
- break;
-
- case GIMP_RUN_NONINTERACTIVE:
- /* Make sure all the arguments are there! */
- if (nparams != 6)
- {
- status = GIMP_PDB_CALLING_ERROR;
- }
- else
- {
- output_type = get_type_from_string (param[5].data.d_string);
- if (output_type < 0)
- status = GIMP_PDB_CALLING_ERROR;
- }
- break;
-
- case GIMP_RUN_WITH_LAST_VALS:
- gimp_get_data ("file_aa_save", &last_type);
- output_type = last_type;
- break;
-
- default:
- break;
- }
- }
-
- if (status == GIMP_PDB_SUCCESS)
- {
- if (save_aa (output_type, param[3].data.d_string, image_ID, drawable_ID))
- {
- status = GIMP_PDB_EXECUTION_ERROR;
- }
- else
- {
- last_type = output_type;
- gimp_set_data ("file_aa_save", &last_type, sizeof (last_type));
- }
- }
-
- if (export == GIMP_EXPORT_EXPORT)
- gimp_image_delete (image_ID);
-
- values[0].data.d_status = status;
- }
-
- /**
- * The actual save function. What it's all about.
- * The image type has to be GRAY.
- */
- static gboolean
- save_aa (gint output_type,
- gchar *filename,
- gint32 image_ID,
- gint32 drawable_ID)
- {
- aa_savedata savedata = {NULL, NULL};
- aa_context *context = NULL;
- GimpDrawable *drawable = NULL;
- aa_format format;
-
- /*fprintf(stderr, "save %s\n", filename); */
-
- drawable = gimp_drawable_get (drawable_ID);
- memcpy (&format, aa_formats[output_type], sizeof (format));
- format.width = drawable->width / 2;
- format.height = drawable->height / 2;
-
- /*fprintf(stderr, "save_aa %i x %i\n", format.width, format.height); */
-
- /* Get a libaa context which will save its output to filename. */
- savedata.name = filename;
- savedata.format = &format;
-
- context = aa_init (&save_d, &aa_defparams, &savedata);
- if (context == NULL)
- return TRUE;
-
- gimp2aa (image_ID, drawable_ID, context);
- aa_flush (context);
- aa_close (context);
-
- /*fprintf(stderr, "Success!\n"); */
-
- return FALSE;
- }
-
- static void
- gimp2aa (gint32 image,
- gint32 drawable_ID,
- aa_context *context)
- {
- gint width, height, x, y;
- guchar *buffer;
- GimpDrawable *drawable = NULL;
- GimpPixelRgn pixel_rgn;
- aa_renderparams *renderparams = NULL;
- gint bpp;
-
- width = aa_imgwidth (context);
- height = aa_imgheight (context);
- /*fprintf(stderr, "gimp2aa %i x %i\n", width, height); */
-
- drawable = gimp_drawable_get (drawable_ID);
-
- bpp = drawable->bpp;
- buffer = g_new (guchar, width * bpp);
-
- gimp_pixel_rgn_init (&pixel_rgn, drawable, 0, 0, drawable->width,
- drawable->height, FALSE, FALSE);
-
- for (y = 0; y < height; y++)
- {
- gimp_pixel_rgn_get_row (&pixel_rgn, buffer, 0, y, width);
- for (x = 0; x < width; x++)
- {
- /* Just copy one byte. If it's indexed that's all we need. Otherwise
- * it'll be the most significant one. */
- aa_putpixel (context, x, y, buffer[x * bpp]);
- }
- }
-
- renderparams = aa_getrenderparams ();
- renderparams->dither = AA_FLOYD_S;
- aa_render (context, renderparams, 0, 0,
- aa_scrwidth (context), aa_scrheight (context));
- }
-
- static gboolean
- aa_savable (gint32 drawable_ID)
- {
- GimpImageType drawable_type;
-
- drawable_type = gimp_drawable_type (drawable_ID);
-
- if (drawable_type != GIMP_GRAY_IMAGE && drawable_type != GIMP_GRAYA_IMAGE)
- return FALSE;
-
- return TRUE;
- }
-
- /*
- * User Interface dialog thingie.
- */
-
- static gint
- type_dialog (int selected)
- {
- GtkWidget *dlg;
- GtkWidget *toggle;
- GtkWidget *frame;
- GtkWidget *toggle_vbox;
- GSList *group;
-
- /* Create the actual window. */
- dlg = gimp_dialog_new (_("Save as Text"), "aa",
- gimp_standard_help_func, "filters/aa.html",
- GTK_WIN_POS_MOUSE,
- FALSE, TRUE, FALSE,
-
- _("OK"), gtk_widget_destroy,
- NULL, 1, NULL, TRUE, FALSE,
- _("Cancel"), type_dialog_cancel_callback,
- NULL, NULL, NULL, FALSE, TRUE,
-
- NULL);
-
- gtk_signal_connect (GTK_OBJECT (dlg), "destroy",
- GTK_SIGNAL_FUNC (gtk_main_quit),
- NULL);
-
- /* file save type */
- frame = gtk_frame_new (_("Data Formatting"));
- gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
- gtk_container_set_border_width (GTK_CONTAINER (frame), 6);
- gtk_box_pack_start (GTK_BOX(GTK_DIALOG(dlg)->vbox), frame, TRUE, TRUE, 0);
-
- toggle_vbox = gtk_vbox_new (FALSE, 2);
- gtk_container_set_border_width (GTK_CONTAINER(toggle_vbox), 4);
- gtk_container_add (GTK_CONTAINER (frame), toggle_vbox);
-
- group = NULL;
- {
- aa_format **p = aa_formats;
- gint current = 0;
-
- while (*p != NULL)
- {
- toggle = gtk_radio_button_new_with_label (group, (*p)->formatname);
- group = gtk_radio_button_group (GTK_RADIO_BUTTON (toggle));
- gtk_box_pack_start (GTK_BOX (toggle_vbox), toggle, FALSE, FALSE, 0);
- gtk_signal_connect (GTK_OBJECT (toggle), "toggled",
- GTK_SIGNAL_FUNC (type_dialog_toggle_update),
- (*p)->formatname);
- if (current == selected)
- gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle), TRUE);
-
- gtk_widget_show (toggle);
- p++;
- current++;
- }
- }
-
- gtk_widget_show (toggle_vbox);
- gtk_widget_show (frame);
-
- gtk_widget_show (dlg);
-
- gtk_main ();
- gdk_flush ();
-
- return selected_type;
- }
-
- /*
- * Callbacks for the dialog.
- */
-
- static void
- type_dialog_cancel_callback (GtkWidget *widget,
- gpointer data)
- {
- selected_type = -1;
- gtk_widget_destroy (GTK_WIDGET (data));
- }
-
- static void
- type_dialog_toggle_update (GtkWidget *widget,
- gpointer data)
- {
- selected_type = get_type_from_string ((char *) data);
- }
-