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celestia/src/celestia/gtk/dialog-eclipse.cpp

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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: dialog-eclipse.cpp,v 1.2 2005-12-10 06:34:21 suwalski Exp $
*/
#include <gtk/gtk.h>
#include <celcompat/numbers.h>
#include <celmath/geomutil.h>
#include <celengine/astro.h>
#include <celengine/simulation.h>
#include <celestia/eclipsefinder.h>
#include "dialog-eclipse.h"
#include "common.h"
using namespace Eigen;
using namespace celmath;
using namespace std;
/* Definitions: Callbacks */
static void calDateSelect(GtkCalendar *calendar, GtkToggleButton *button);
static void showCalPopup(GtkToggleButton *button, EclipseData *ed);
static gint eclipseGoto(GtkButton*, EclipseData* ed);
static gint eclipse2Click(GtkWidget*, GdkEventButton* event, EclipseData* ed);
static void eclipseCompute(GtkButton* button, EclipseData* ed);
static void eclipseBodySelect(GtkComboBox* comboBox, EclipseData* ed);
static void eclipseTypeSelect(GtkComboBox* comboBox, EclipseData* ed);
static void listEclipseSelect(GtkTreeSelection* sel, EclipseData* ed);
static void eclipseDestroy(GtkWidget* w, gint, EclipseData* ed);
/* Definitions: Helpers */
static void setButtonDateString(GtkToggleButton *button, int year, int month, int day);
/* ENTRY: Navigation -> Eclipse Finder */
void dialogEclipseFinder(AppData* app)
{
EclipseData* ed = g_new0(EclipseData, 1);
selDate* d1 = g_new0(selDate, 1);
selDate* d2 = g_new0(selDate, 1);
ed->d1 = d1;
ed->d2 = d2;
ed->app = app;
ed->eclipseList = NULL;
ed->eclipseListStore = NULL;
ed->type = Eclipse::Solar;
ed->body = eclipsePlanetTitles[0];
ed->sel = NULL;
ed->window = GTK_DIALOG(gtk_dialog_new_with_buttons("Eclipse Finder",
GTK_WINDOW(app->mainWindow),
GTK_DIALOG_DESTROY_WITH_PARENT,
GTK_STOCK_OK,
GTK_RESPONSE_OK,
NULL));
gtk_window_set_modal(GTK_WINDOW(ed->window), FALSE);
GtkWidget *mainbox = gtk_dialog_get_content_area(GTK_DIALOG(ed->window));
gtk_container_set_border_width(GTK_CONTAINER(mainbox), CELSPACING);
GtkWidget *scrolled_win = gtk_scrolled_window_new(NULL, NULL);
gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolled_win),
GTK_POLICY_AUTOMATIC,
GTK_POLICY_ALWAYS);
gtk_box_pack_start(GTK_BOX(mainbox), scrolled_win, TRUE, TRUE, 0);
/* Create listbox list.
* Six invisible ints at the end to hold actual time.
* This will save string parsing like in KDE version.
* Last field holds pointer to selected Body. */
ed->eclipseListStore = gtk_list_store_new(12,
G_TYPE_STRING,
G_TYPE_STRING,
G_TYPE_STRING,
G_TYPE_STRING,
G_TYPE_STRING,
G_TYPE_INT,
G_TYPE_INT,
G_TYPE_INT,
G_TYPE_INT,
G_TYPE_INT,
G_TYPE_INT,
G_TYPE_POINTER);
ed->eclipseList = gtk_tree_view_new_with_model(GTK_TREE_MODEL(ed->eclipseListStore));
gtk_tree_view_set_rules_hint(GTK_TREE_VIEW(ed->eclipseList), TRUE);
gtk_container_add(GTK_CONTAINER(scrolled_win), ed->eclipseList);
GtkCellRenderer *renderer;
GtkTreeViewColumn *column;
/* Add the columns */
for (int i=0; i<5; i++) {
renderer = gtk_cell_renderer_text_new();
column = gtk_tree_view_column_new_with_attributes(eclipseTitles[i], renderer, "text", i, NULL);
gtk_tree_view_append_column(GTK_TREE_VIEW(ed->eclipseList), column);
}
/* Set up callback for when an eclipse is selected */
GtkTreeSelection *selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(ed->eclipseList));
g_signal_connect(selection, "changed", G_CALLBACK(listEclipseSelect), ed);
/* From now on, it's the bottom-of-the-window controls */
GtkWidget *label;
GtkWidget *hbox;
/* -------------------------------- */
hbox = gtk_hbox_new(FALSE, CELSPACING);
label = gtk_label_new("Find");
gtk_box_pack_start(GTK_BOX(hbox), label, FALSE, FALSE, 0);
GtkWidget *menuTypeBox = gtk_combo_box_text_new();
gtk_box_pack_start(GTK_BOX(hbox), menuTypeBox, FALSE, FALSE, 0);
label = gtk_label_new("eclipse on");
gtk_box_pack_start(GTK_BOX(hbox), label, FALSE, FALSE, 0);
GtkWidget* menuBodyBox = gtk_combo_box_text_new();
gtk_box_pack_start(GTK_BOX(hbox), menuBodyBox, FALSE, FALSE, 0);
gtk_box_pack_start(GTK_BOX(mainbox), hbox, FALSE, FALSE, 0);
/* -------------------------------- */
hbox = gtk_hbox_new(FALSE, CELSPACING);
label = gtk_label_new("From");
gtk_box_pack_start(GTK_BOX(hbox), label, FALSE, FALSE, 0);
/* Get current date */
astro::Date datenow(app->simulation->getTime());
/* Set current time */
ed->d1->year = datenow.year - 1;
ed->d1->month = datenow.month;
ed->d1->day = datenow.day;
/* Set time a year from now */
ed->d2->year = ed->d1->year + 2;
ed->d2->month = ed->d1->month;
ed->d2->day = ed->d1->day;
GtkWidget* date1Button = gtk_toggle_button_new();
setButtonDateString(GTK_TOGGLE_BUTTON(date1Button), ed->d1->year, ed->d1->month, ed->d1->day);
g_object_set_data(G_OBJECT(date1Button), "eclipsedata", ed->d1);
gtk_box_pack_start(GTK_BOX(hbox), date1Button, FALSE, FALSE, 0);
label = gtk_label_new("to");
gtk_box_pack_start(GTK_BOX(hbox), label, FALSE, FALSE, 0);
GtkWidget* date2Button = gtk_toggle_button_new();
setButtonDateString(GTK_TOGGLE_BUTTON(date2Button), ed->d2->year, ed->d2->month, ed->d2->day);
g_object_set_data(G_OBJECT(date2Button), "eclipsedata", ed->d2);
gtk_box_pack_start(GTK_BOX(hbox), date2Button, FALSE, FALSE, 0);
gtk_box_pack_start(GTK_BOX(mainbox), hbox, FALSE, FALSE, 0);
/* -------------------------------- */
/* Common Buttons */
hbox = gtk_hbox_new(TRUE, CELSPACING);
if (buttonMake(hbox, "Compute", (GCallback)eclipseCompute, ed))
return;
if (buttonMake(hbox, "Set Date and Go to Planet", (GCallback)eclipseGoto, ed))
return;
gtk_box_pack_start(GTK_BOX(mainbox), hbox, FALSE, FALSE, 0);
/* Set up the drop-down boxes */
for (int i = 0; eclipseTypeTitles[i] != NULL; i++)
{
gtk_combo_box_text_append_text(GTK_COMBO_BOX_TEXT(menuTypeBox), eclipseTypeTitles[i]);
}
gtk_combo_box_set_active(GTK_COMBO_BOX(menuTypeBox), 0);
for (int i = 0; eclipsePlanetTitles[i] != NULL; i++)
{
gtk_combo_box_text_append_text(GTK_COMBO_BOX_TEXT(menuBodyBox), eclipsePlanetTitles[i]);
}
gtk_combo_box_set_active(GTK_COMBO_BOX(menuBodyBox), 0);
/* Hook up all the signals */
g_signal_connect(G_OBJECT(menuTypeBox), "changed", G_CALLBACK(eclipseTypeSelect), ed);
g_signal_connect(G_OBJECT(menuBodyBox), "changed", G_CALLBACK(eclipseBodySelect), ed);
/* Double-click handler */
g_signal_connect(G_OBJECT(ed->eclipseList), "button-press-event", G_CALLBACK(eclipse2Click), ed);
g_signal_connect(G_OBJECT(date1Button), "toggled", G_CALLBACK(showCalPopup), ed);
g_signal_connect(G_OBJECT(date2Button), "toggled", G_CALLBACK(showCalPopup), ed);
g_signal_connect(ed->window, "response", G_CALLBACK(eclipseDestroy), ed);
gtk_widget_set_size_request(GTK_WIDGET(ed->window), -1, 400); /* Absolute Size, urghhh */
gtk_widget_show_all(GTK_WIDGET(ed->window));
}
/* CALLBACK: When the GtkCalendar date is selected */
static void calDateSelect(GtkCalendar *calendar, GtkToggleButton *button)
{
/* Set the selected date */
guint year, month, day;
gtk_calendar_get_date(calendar, &year, &month, &day);
/* A button stores its own date */
selDate* date = (selDate *)g_object_get_data(G_OBJECT(button), "eclipsedata");
date->year = year;
date->month = month + 1;
date->day = day;
/* Update the button text */
setButtonDateString(button, year, month + 1, day);
/* Close the calendar window */
gtk_toggle_button_set_active(button, !gtk_toggle_button_get_active(button));
}
/* CALLBACK: When a button is clicked to show a GtkCalendar */
static void showCalPopup(GtkToggleButton *button, EclipseData *ed)
{
GtkWidget* calwindow = GTK_WIDGET(g_object_get_data(G_OBJECT(button), "calendar"));
if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(button)))
{
/* Pushed in */
if (!calwindow)
{
calwindow = gtk_window_new(GTK_WINDOW_TOPLEVEL);
/* FIXME: should be a transient, but then there are focus issues */
gtk_window_set_modal(GTK_WINDOW(calwindow), TRUE);
gtk_window_set_type_hint(GTK_WINDOW(calwindow), GDK_WINDOW_TYPE_HINT_DOCK);
gtk_window_set_decorated(GTK_WINDOW(calwindow), FALSE);
gtk_window_set_resizable(GTK_WINDOW(calwindow), FALSE);
gtk_window_stick(GTK_WINDOW(calwindow));
GtkWidget* calendar = gtk_calendar_new();
/* Load date structure stored in the button's data */
selDate* date = (selDate *)g_object_get_data(G_OBJECT(button), "eclipsedata");
gtk_calendar_select_month(GTK_CALENDAR(calendar), date->month - 1, date->year);
gtk_calendar_select_day(GTK_CALENDAR(calendar), date->day);
gtk_container_add(GTK_CONTAINER(calwindow), calendar);
gtk_widget_show(calendar);
int x, y, i, j;
gdk_window_get_origin(gtk_widget_get_window(GTK_WIDGET(button)), &x, &y);
gtk_widget_translate_coordinates(GTK_WIDGET(button), GTK_WIDGET(ed->window), 10, 10, &i, &j);
gtk_window_move(GTK_WINDOW(calwindow), x + i, y + j);
g_signal_connect(calendar, "day-selected-double-click", G_CALLBACK(calDateSelect), button);
gtk_window_present(GTK_WINDOW(calwindow));
g_object_set_data_full(G_OBJECT(button), "calendar",
calwindow, (GDestroyNotify)gtk_widget_destroy);
}
}
else
{
/* Pushed out */
if (calwindow)
{
/* Destroys the calendar */
g_object_set_data(G_OBJECT(button), "calendar", NULL);
calwindow = NULL;
}
}
}
/* CALLBACK: "SetTime/Goto" in Eclipse Finder */
static gint eclipseGoto(GtkButton*, EclipseData* ed)
{
GValue value = { 0, {{0}} }; /* Initialize GValue to 0 */
GtkTreeIter iter;
GtkTreeModel* model;
int time[6];
Simulation* sim = ed->app->simulation;
/* Nothing selected */
if (ed->sel == NULL)
return FALSE;
/* IF prevents selection while list is being updated */
if (!gtk_tree_selection_get_selected(ed->sel, &model, &iter))
return FALSE;
/* Tedious method of extracting the desired time.
* However, still better than parsing a single string. */
for (int i = 0; i < 6; i++)
{
gtk_tree_model_get_value(model, &iter, i+5, &value);
time[i] = g_value_get_int(&value);
g_value_unset(&value);
}
/* Retrieve the selected body */
gtk_tree_model_get_value(model, &iter, 11, &value);
Body* body = (Body *)g_value_get_pointer(&value);
g_value_unset(&value);
/* Set time based on retrieved values */
astro::Date d(time[0], time[1], time[2]);
d.hour = time[3];
d.minute = time[4];
d.seconds = (double)time[5];
sim->setTime((double)d);
/* The rest is directly from the Windows eclipse code */
Selection target(body);
Selection ref(body->getSystem()->getStar());
/* Use the phase lock coordinate system to set a position
* on the line between the sun and the body where the eclipse
* is occurring. */
sim->setFrame(ObserverFrame::PhaseLock, target, ref);
sim->update(0.0);
double distance = target.radius() * 4.0;
sim->gotoLocation(UniversalCoord::Zero().offsetKm(Vector3d::UnitX() * distance),
(YRotation(-celestia::numbers::pi / 2) * XRotation(-celestia::numbers::pi / 2)), 2.5);
return TRUE;
}
/* CALLBACK: Double-click on the Eclipse Finder Listbox */
static gint eclipse2Click(GtkWidget*, GdkEventButton* event, EclipseData* ed)
{
if (event->type == GDK_2BUTTON_PRESS) {
/* Double-click, same as hitting the select and go button */
return eclipseGoto(NULL, ed);
}
return FALSE;
}
/* CALLBACK: Compute button in Eclipse Finder */
static void eclipseCompute(GtkButton* button, EclipseData* ed)
{
GtkTreeIter iter;
/* Set the cursor to a watch and force redraw */
gdk_window_set_cursor(gtk_widget_get_window(GTK_WIDGET(button)), gdk_cursor_new(GDK_WATCH));
gtk_main_iteration();
/* Clear the listbox */
gtk_list_store_clear(ed->eclipseListStore);
/* Create the dates in a more suitable format */
astro::Date from(ed->d1->year, ed->d1->month, ed->d1->day);
astro::Date to(ed->d2->year, ed->d2->month, ed->d2->day);
/* Initialize the eclipse finder */
vector<Eclipse> eclipseListRaw;
const SolarSystem* sys = ed->app->core->getSimulation()->getNearestSolarSystem();
if (sys != nullptr && sys->getStar()->getIndex() == 0)
{
Body* planete = sys->getPlanets()->find(ed->body);
if (planete != nullptr)
{
EclipseFinder ef(planete);
ef.findEclipses((double)from, (double)to, ed->type, eclipseListRaw);
}
}
for (const auto& e : eclipseListRaw)
{
char d[12], strStart[10], strEnd[10];
astro::Date start(e.startTime);
astro::Date end(e.endTime);
sprintf(d, "%d-%02d-%02d", start.year, start.month, start.day);
sprintf(strStart, "%02d:%02d:%02d", start.hour, start.minute, (int)start.seconds);
sprintf(strEnd, "%02d:%02d:%02d", end.hour, end.minute, (int)end.seconds);
/* Set time to middle time so that eclipse it right on earth */
astro::Date timeToSet = (start + end) / 2.0f;
/* Add item to the list.
* Entries 5-10 are not displayed and store data. */
gtk_list_store_append(ed->eclipseListStore, &iter);
const char *planet, *satellite;
if (ed->type == Eclipse::Solar)
{
planet = e.receiver->getName().c_str();
satellite = e.occulter->getName().c_str();
}
else
{
satellite = e.receiver->getName().c_str();
planet = e.occulter->getName().c_str();
}
gtk_list_store_set(ed->eclipseListStore, &iter,
0, planet,
1, satellite,
2, d,
3, strStart,
4, strEnd,
5, timeToSet.year,
6, timeToSet.month,
7, timeToSet.day,
8, timeToSet.hour,
9, timeToSet.minute,
10, (int)timeToSet.seconds,
-1);
}
/* Set the cursor back */
gdk_window_set_cursor(gtk_widget_get_window(GTK_WIDGET(button)), gdk_cursor_new(GDK_LEFT_PTR));
}
/* CALLBACK: When Eclipse Body is selected */
static void eclipseBodySelect(GtkComboBox* comboBox, EclipseData* ed)
{
int itemIndex = gtk_combo_box_get_active(comboBox);
/* Set string according to body array */
ed->body = eclipsePlanetTitles[itemIndex];
}
/* CALLBACK: When Eclipse Type (Solar:Moon) is selected */
static void eclipseTypeSelect(GtkComboBox* comboBox, EclipseData* ed)
{
int itemIndex = gtk_combo_box_get_active(comboBox);
/* Solar eclipse */
if (itemIndex == 0)
ed->type = Eclipse::Solar;
/* Moon eclipse */
else
ed->type = Eclipse::Lunar;
}
/* CALLBACK: When Eclipse is selected in Eclipse Finder */
static void listEclipseSelect(GtkTreeSelection* sel, EclipseData* ed)
{
/* Simply set the selection pointer to this data item */
ed->sel = sel;
}
/* CALLBACK: Destroy Window */
static void eclipseDestroy(GtkWidget* w, gint, EclipseData* ed)
{
gtk_widget_destroy(GTK_WIDGET(w));
g_free(ed->d1);
g_free(ed->d2);
g_free(ed);
}
/* HELPER: set a date string in a button */
static void setButtonDateString(GtkToggleButton *button, int year, int month, int day)
{
char date[50];
sprintf(date, "%d %s %d", day, monthOptions[month - 1], year);
gtk_button_set_label(GTK_BUTTON(button), date);
}
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