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