common.h

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/*
 *  Celestia GTK+ Front-End
 *  Copyright (C) 2005 Pat Suwalski <pat@suwalski.net>
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  $Id: common.h,v 1.3 2005/12/13 06:19:57 suwalski Exp $
 */

#ifndef GTK_COMMON_H
#define GTK_COMMON_H

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif /* HAVE_CONFIG_H */

#include <gtk/gtk.h>

#ifdef GNOME
#include <gconf/gconf-client.h>
#endif /* GNOME */

#include <celengine/render.h>
#include <celengine/simulation.h>
#include <celestia/celestiacore.h>


typedef struct _AppData AppData;
struct _AppData {
        /* Core Pointers */
        CelestiaCore* core;
        Renderer* renderer;
        Simulation* simulation;

        /* Important Widgets */
        GtkWidget* mainWindow;
        GtkWidget* mainMenu;
        GtkWidget* glArea;
        GtkWidget* optionDialog;
        GtkWidget* contextMenu;
        
        /* Action Groups */
        GtkActionGroup* agMain;
        GtkActionGroup* agRender;
        GtkActionGroup* agOrbit;
        GtkActionGroup* agLabel;
        GtkActionGroup* agVerbosity;
        GtkActionGroup* agStarStyle;
        GtkActionGroup* agAmbient;
        
        /* Settings */
        #ifdef GNOME
        GConfClient* client;
        #else
        GKeyFile* settingsFile;
        #endif /* GNOME */
        
        /* Ready to render? */
        gboolean bReady;
        
        /* Mouse motion tracking */
        int lastX;
        int lastY;
        
        /* Starting URL */
        char* startURL;
        
        /* A few preferences not tracked by the core */
        gboolean showLocalTime;
        gboolean fullScreen;
};


/* Helper functions used throughout */
gint tzOffsetAtDate(astro::Date date);
void updateTimeZone(AppData* app, gboolean local);
gint buttonMake(GtkWidget *hbox, const char *txt, GtkSignalFunc func, gpointer data);
void makeRadioItems(const char* const *labels, GtkWidget *box, GtkSignalFunc sigFunc, GtkToggleButton **gads, gpointer data);
char* readFromFile(const char *fname);

/* Functions to get window properties regardless of window state */
int getWinWidth(AppData* app);
int getWinHeight(AppData* app);
int getWinX(AppData* app);
int getWinY(AppData* app);

/* Functions to apply preferences with sanity checks */
void setSaneAmbientLight(AppData* app, float value);
void setSaneVisualMagnitude(AppData* app, float value);
void setSaneGalaxyLightGain(float value);
void setSaneVerbosity(AppData* app, int value);
void setSaneStarStyle(AppData* app, Renderer::StarStyle value);
void setSaneAltSurface(AppData* app, char* value);
void setSaneWinSize(AppData* app, int x, int y);
void setSaneWinPosition(AppData* app, int x, int y);
void setDefaultRenderFlags(AppData* app);


/* Constants used throughout */
const char * const monthOptions[] = 
{
    "January",
    "February",
    "March",
    "April",
    "May",
    "June",
    "July",
    "August",
    "September",
    "October",
    "November",
    "December",
    NULL
};

static const float amLevels[] =
{
    0.0, 
    0.1,
    0.25
};

static const int resolutions[] =
{
        0,        /* Must start with 0 */
        640,
        800,
        1024,
        1152,
        1280,
        1400,
        1600,
        -1        /* Must end with -1 */
};

/* This is the spacing used for widgets throughout the program */
#define CELSPACING 8

#endif /* GTK_COMMON_H */

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