common.h

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/*
 *  Celestia GTK+ Front-End
 *  Copyright (C) 2005 Pat Suwalski <[e-mail]>
 *
 *  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 */