/* *  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: dialog-goto.cpp,v 1.1 2005/12/06 03:19:35 suwalski Exp $ */#include <gtk/gtk.h>#include <celengine/selection.h>#include <celengine/simulation.h>#include <celmath/vecmath.h>#include "dialog-goto.h"#include "common.h"/* Declarations: Callbacks */static int changeGotoUnits(GtkButton* w, gpointer choice);static void responseGotoObject(GtkDialog* w, gint response, gotoObjectData* d);/* Declarations: Helpers */static gboolean GetEntryFloat(GtkWidget* w, float& f);static void GotoObject(gotoObjectData* gotoObjectDlg);/* ENTRY: Navigation->Goto Object */void dialogGotoObject(AppData* app){	gotoObjectData *data = g_new0(gotoObjectData, 1);	data->app = app;	data->dialog = gtk_dialog_new_with_buttons("Goto Object",	                                           GTK_WINDOW(app->mainWindow),	                                           GTK_DIALOG_DESTROY_WITH_PARENT,	                                           "Go To",	                                           GTK_RESPONSE_OK,	                                           GTK_STOCK_CLOSE,	                                           GTK_RESPONSE_CLOSE,	                                           NULL);	data->nameEntry = gtk_entry_new();	data->latEntry = gtk_entry_new();	data->longEntry = gtk_entry_new();	data->distEntry = gtk_entry_new();	if (data->dialog == NULL ||	    data->nameEntry == NULL ||	    data->latEntry == NULL ||	    data->longEntry == NULL ||	    data->distEntry == NULL)	{		/* Potential memory leak here ... */		return;	}	/* Set up the values (from windows cpp file) */	double distance, longitude, latitude;	app->simulation->getSelectionLongLat(distance, longitude, latitude);	/* Display information in format appropriate for object */	if (app->simulation->getSelection().body() != NULL)	{		char temp[20];		distance = distance - (double) app->simulation->getSelection().body()->getRadius();		sprintf(temp, "%.1f", (float)distance);		gtk_entry_set_text(GTK_ENTRY(data->distEntry), temp);		sprintf(temp, "%.5f", (float)longitude);		gtk_entry_set_text(GTK_ENTRY(data->longEntry), temp);		sprintf(temp, "%.5f", (float)latitude);		gtk_entry_set_text(GTK_ENTRY(data->latEntry), temp);		gtk_entry_set_text(GTK_ENTRY(data->nameEntry), (char*) app->simulation->getSelection().body()->getName().c_str());	}	GtkWidget* vbox = gtk_vbox_new(TRUE, CELSPACING);	gtk_container_set_border_width(GTK_CONTAINER(vbox), CELSPACING);	gtk_box_pack_start(GTK_BOX(GTK_DIALOG(data->dialog)->vbox), vbox, TRUE, TRUE, 0);	GtkWidget* align = NULL;	GtkWidget* hbox = NULL;	GtkWidget* label = NULL;	/* Object name label and entry */	align = gtk_alignment_new(1, 0, 0, 0);	hbox = gtk_hbox_new(FALSE, CELSPACING);	label = gtk_label_new("Object name:");	gtk_box_pack_start(GTK_BOX(hbox), label, FALSE, TRUE, 0);	gtk_box_pack_start(GTK_BOX(hbox), data->nameEntry, FALSE, TRUE, 0);	gtk_container_add(GTK_CONTAINER(align), hbox);	gtk_box_pack_start(GTK_BOX(vbox), align, FALSE, TRUE, 0);	/* Latitude and longitude */	align = gtk_alignment_new(1, 0, 0, 0);	hbox = gtk_hbox_new(FALSE, CELSPACING);	label = gtk_label_new("Latitude:");	gtk_box_pack_start(GTK_BOX(hbox), label, FALSE, TRUE, 0);	gtk_box_pack_start(GTK_BOX(hbox), data->latEntry, FALSE, TRUE, 0);	gtk_container_add(GTK_CONTAINER(align), hbox);	gtk_box_pack_start(GTK_BOX(vbox), align, FALSE, TRUE, 0);	align = gtk_alignment_new(1, 0, 0, 0);	hbox = gtk_hbox_new(FALSE, CELSPACING);	label = gtk_label_new("Longitude:");	gtk_box_pack_start(GTK_BOX(hbox), label, FALSE, TRUE, 0);	gtk_box_pack_start(GTK_BOX(hbox), data->longEntry, FALSE, TRUE, 0);	gtk_container_add(GTK_CONTAINER(align), hbox);	gtk_box_pack_start(GTK_BOX(vbox), align, FALSE, TRUE, 0);	/* Distance */	align = gtk_alignment_new(1, 0, 0, 0);	hbox = gtk_hbox_new(FALSE, CELSPACING);	label = gtk_label_new("Distance:");	gtk_box_pack_start(GTK_BOX(hbox), label, FALSE, TRUE, 0);	gtk_box_pack_start(GTK_BOX(hbox), data->distEntry, FALSE, TRUE, 0);	gtk_container_add(GTK_CONTAINER(align), hbox);	gtk_box_pack_start(GTK_BOX(vbox), align, FALSE, TRUE, 0);	/* Distance Options */	data->units = 0;	hbox = gtk_hbox_new(FALSE, CELSPACING);	makeRadioItems(unitLabels, hbox, GTK_SIGNAL_FUNC(changeGotoUnits), NULL, data);	gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, TRUE, 0);		g_signal_connect(data->dialog, "response",	                 G_CALLBACK(responseGotoObject), data);		gtk_widget_show_all(data->dialog);}/* CALLBACK: for km|radii|au in Goto Object dialog */static int changeGotoUnits(GtkButton* w, gpointer choice){	gotoObjectData* data = (gotoObjectData *)g_object_get_data(G_OBJECT(w), "data");	gint selection = GPOINTER_TO_INT(choice);	data->units = selection;		return TRUE;}/* CALLBACK: response from this dialog. * Need this because gtk_dialog_run produces a modal window. */static void responseGotoObject(GtkDialog* w, gint response, gotoObjectData* d){	switch (response) {		case GTK_RESPONSE_OK:			GotoObject(d);			break;		case GTK_RESPONSE_CLOSE:			gtk_widget_destroy(GTK_WIDGET(w));			g_free(d);	}}/* HELPER: Get the float value from one of the GtkEntrys */static gboolean GetEntryFloat(GtkWidget* w, float& f){	GtkEntry* entry = GTK_ENTRY(w);	bool tmp;	if (entry == NULL)		return false;	gchar* text = gtk_editable_get_chars(GTK_EDITABLE(entry), 0, -1);	f = 0.0;	if (text == NULL)		return false;	tmp = sscanf(text, " %f", &f) == 1;	g_free(text);	return tmp;}/* HELPER: Goes to the object specified by gotoObjectData */static void GotoObject(gotoObjectData* gotoObjectDlg){	const gchar* objectName = gtk_entry_get_text(GTK_ENTRY(gotoObjectDlg->nameEntry));		if (objectName != NULL)	{		Simulation* simulation = gotoObjectDlg->app->simulation;		Selection sel = simulation->findObjectFromPath(objectName);				if (!sel.empty())		{			simulation->setSelection(sel);			simulation->follow();			float distance = (float) (sel.radius() * 5.0f);			if (GetEntryFloat(gotoObjectDlg->distEntry, distance))			{				/* Adjust for km (0), radii (1), au (2) */				if (gotoObjectDlg->units == 2)					distance = astro::AUtoKilometers(distance);				else if (gotoObjectDlg->units == 1)					distance = distance * (float) sel.radius();				distance += (float) sel.radius();			}			distance = astro::kilometersToLightYears(distance);			float longitude, latitude;			if (GetEntryFloat(gotoObjectDlg->latEntry, latitude) &&			    GetEntryFloat(gotoObjectDlg->longEntry, longitude))			{				simulation->gotoSelectionLongLat(5.0,				                                 distance,				                                 degToRad(longitude),				                                 degToRad(latitude),				                                 Vec3f(0, 1, 0));			}			else			{				simulation->gotoSelection(5.0,				                          distance,				                          Vec3f(0, 1, 0),				                          astro::ObserverLocal);			}		}	}}