src/acquire.h

   1 /*
   2  * viking -- GPS Data and Topo Analyzer, Explorer, and Manager
   3  *
   4  * Copyright (C) 2003-2005, Evan Battaglia <gtoevan@gmx.net>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  *
  20  */
  21
  22 #ifndef _VIKING_ACQUIRE_H
  23 #define _VIKING_ACQUIRE_H
  24
  25 #include <gtk/gtk.h>
  26
  27 #include "vikwindow.h"
  28 #include "viklayerspanel.h"
  29 #include "vikviewport.h"
  30
  31 typedef struct _VikDataSourceInterface VikDataSourceInterface;
  32
  33 /* global data structure used to expose the progress dialog to the worker thread */
  34 typedef struct {
  35   GtkWidget *status;
  36   VikWindow *vw;
  37   VikLayersPanel *vlp;
  38   VikViewport *vvp;
  39   GtkWidget *dialog;
  40   gboolean ok; /* if OK is false when we exit, we MUST free w */
  41   VikDataSourceInterface *interface;
  42   gpointer user_data;
  43 } acq_dialog_widgets_t;
  44
  45 typedef enum { VIK_DATASOURCE_GPSBABEL_DIRECT, VIK_DATASOURCE_SHELL_CMD } vik_datasource_type_t;
  46 typedef enum { VIK_DATASOURCE_CREATENEWLAYER, VIK_DATASOURCE_ADDTOLAYER } vik_datasource_mode_t;
  47
  48
  49 /* returns pointer to state if OK, otherwise NULL */
  50 typedef gpointer (*VikDataSourceInitFunc) ();
  51
  52 /* returns NULL if OK, otherwise returns an error message. */
  53 typedef gchar *(*VikDataSourceCheckExistenceFunc) ();
  54
  55 /* Create widgets to show in a setup dialog, set up state via user_data */
  56 typedef void (*VikDataSourceAddSetupWidgetsFunc) ( GtkWidget *dialog, VikViewport *vvp, gpointer user_data );
  57
  58 /* if VIK_DATASOURCE_GPSBABEL_DIRECT, babelargs and inputfile.
  59    if VIK_DATASOURCE_SHELL_CMD, shellcmd and inputtype.
  60    set both to NULL to signal refusal (ie already downloading) */
  61 typedef void (*VikDataSourceGetCmdStringFunc) ( gpointer user_data, gchar **babelargs_or_shellcmd, gchar **inputfile_or_inputtype );
  62
  63 /* */
  64 typedef void  (*VikDataSourceProgressFunc)  (gpointer c, gpointer data, acq_dialog_widgets_t *w);
  65
  66 /* Creates widgets to show in a progress dialog, may set up state via user_data */
  67 typedef void  (*VikDataSourceAddProgressWidgetsFunc) ( GtkWidget *dialog, gpointer user_data );
  68
  69 /* Frees any widgets created for the setup or progress dialogs, any allocated state, etc. */
  70 typedef void (*VikDataSourceCleanupFunc) ( gpointer user_data );
  71
  72
  73 struct _VikDataSourceInterface {
  74   const gchar *window_title;
  75   const gchar *layer_title;
  76   vik_datasource_type_t type;
  77   vik_datasource_type_t mode;
  78
  79   VikDataSourceInitFunc init_func;
  80   VikDataSourceCheckExistenceFunc check_existence_func;
  81   VikDataSourceAddSetupWidgetsFunc add_setup_widgets_func;
  82   VikDataSourceGetCmdStringFunc get_cmd_string_func;
  83
  84   VikDataSourceProgressFunc progress_func;
  85   VikDataSourceAddProgressWidgetsFunc add_progress_widgets_func;
  86   VikDataSourceCleanupFunc cleanup_func;
  87 };
  88
  89
  90 void a_acquire ( VikWindow *vw, VikLayersPanel *vlp, VikViewport *vvp, VikDataSourceInterface *interface );
  91
  92 #endif