/*
Copyright (c) 2000 Benjamin Crowell,
2008 Kostas Giannakakis. All rights reserved.
About the GPL License
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.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using System.Globalization;
using Microsoft.WindowsMobile.Samples.Location;
using Microsoft.WindowsCE.Forms;
namespace PlanetFinder
{
public partial class Form1 : Form
{
private PlanetFinderEngine planetFinder;
private int width = GetSystemMetrics(SM_CXSCREEN);
private int height = GetSystemMetrics(SM_CYSCREEN);
private DateTime dateTime;
private TimeSettings timeSettings;
private PositionSettings positionFinder;
private Preferences preferences;
private CultureInfo cultureInfo = new CultureInfo("en-US");
private string APP_KEY_NAME = @"HKEY_LOCAL_MACHINE\SOFTWARE\SullenArt\PlanetFinder";
private Timer autoUpdateTimer;
private Timer suspendTimer;
private bool suspendMode;
#region Gps Code
private Gps gps;
private GpsDeviceState gpsDeviceState = null;
private GpsPosition gpsPosition = null;
private System.EventHandler gpsUpdateDataHandler;
private int gpsEventCounter;
private bool useGps = false;
private bool gpsValid = false;
private void GpsInit()
{
gps = new Gps();
gpsUpdateDataHandler = new System.EventHandler(GpsUpdateData);
gps.DeviceStateChanged +=
new DeviceStateChangedEventHandler(gps_DeviceStateChanged);
gps.LocationChanged +=
new LocationChangedEventHandler(gps_LocationChanged);
}
private void GpsStart()
{
gpsEventCounter = 0;
gps.Open();
}
private void GpsStop()
{
if (gps.Opened)
{
gps.Close();
gpsEventCounter = 0;
gpsValid = false;
gpsPosition = null;
gpsDeviceState = null;
}
}
protected void gps_LocationChanged(object sender,
LocationChangedEventArgs args)
{
gpsPosition = args.Position;
GpsStateOrPositionChanged();
}
protected void gps_DeviceStateChanged(object sender,
DeviceStateChangedEventArgs args)
{
gpsDeviceState = args.DeviceState;
GpsStateOrPositionChanged();
}
private void GpsStateOrPositionChanged()
{
bool prevState = gpsValid;
// Calculate Gps Valid
gpsValid = gpsPosition != null &&
gpsDeviceState != null &&
gpsPosition.SatellitesInViewCountValid &&
gpsPosition.SatellitesInViewCount > 1 &&
gpsPosition.TimeValid &&
gpsPosition.LongitudeValid &&
gpsPosition.LatitudeValid &&
gpsDeviceState.DeviceState == GpsServiceState.On;
if (gpsValid)
{
positionFinder.Longitude = gpsPosition.Longitude;
positionFinder.Latitude = gpsPosition.Latitude;
positionFinder.PositionName = "";
}
if (prevState != gpsValid ||
(!gpsValid && gpsEventCounter == 0))
{
Invoke(gpsUpdateDataHandler);
}
gpsEventCounter++;
if (gpsEventCounter == 10)
{
gpsEventCounter = 0;
}
}
void GpsUpdateData(object sender, System.EventArgs args)
{
if (gps.Opened)
{
gpsPanel.Visible = !gpsValid;
if (!gpsValid && gpsPosition != null)
{
labelLatitude.Text = "Latitude: ";
if (gpsPosition.LatitudeValid)
{
labelLatitude.Text +=
String.Format(cultureInfo, "{0:0.00}",
gpsPosition.Latitude);
}
labelLongitude.Text = "Latitude: ";
if (gpsPosition.LongitudeValid)
{
labelLongitude.Text +=
String.Format(cultureInfo, "{0:0.00}",
gpsPosition.Longitude);
}
labelSatellites.Text = "Satellites: ";
if (gpsPosition.SatelliteCountValid)
{
labelSatellites.Text += String.Format("{0}",
gpsPosition.SatelliteCount);
}
labelTime.Text = "Time: ";
if (gpsPosition.TimeValid)
{
labelTime.Text = gpsPosition.Time.ToLongTimeString() + " " +
gpsPosition.Time.ToShortDateString();
}
}
}
else
{
gpsPanel.Visible = false;
}
UpdateSky();
}
#endregion
public Form1()
{
InitializeComponent();
InputModeEditor.SetInputMode(latitudeTextBox, InputMode.Numeric);
InputModeEditor.SetInputMode(longitudeTextBox, InputMode.Numeric);
GpsInit();
preferences = new Preferences(APP_KEY_NAME);
timeSettings = new TimeSettings(APP_KEY_NAME);
positionFinder = new PositionSettings(APP_KEY_NAME,
timeSettings.Timezone);
dateTime = DateTime.Now;
planetFinder = new PlanetFinderEngine();
UpdateSky();
dateTimePicker1.Format = DateTimePickerFormat.Custom;
dateTimePicker1.CustomFormat = "HH:mm, dd MM yyyy";
controlPanel.Visible = false;
UpdatePanel();
autoUpdateTimer = new Timer();
autoUpdateTimer.Tick += new EventHandler(autoUpdateTimer_Tick);
autoUpdateTimer.Interval = 60000;
suspendMode = false;
suspendTimer = new Timer();
suspendTimer.Tick += new EventHandler(suspendTimer_Tick);
suspendTimer.Interval = 10000;
}
void AutoTimerEnable(bool autoUpdate)
{
dateTimePicker1.Enabled = !autoUpdate;
if (autoUpdate && !autoUpdateTimer.Enabled)
{
autoUpdateTimer.Enabled = true;
}
else if (!autoUpdate && autoUpdateTimer.Enabled)
{
autoUpdateTimer.Enabled = false;
}
}
void RefreshTime()
{
if (preferences.AutoUpdate)
{
dateTime = DateTime.Now;
dateTimePicker1.Value = dateTime;
UpdatePanel();
UpdateSky();
}
}
void autoUpdateTimer_Tick(object sender, EventArgs e)
{
if (!useGps)
{
RefreshTime();
}
else
{
if (gpsValid)
{
dateTime = gpsPosition.Time;
dateTime = DateTime.Now;
dateTimePicker1.Value = dateTime;
UpdatePanel();
UpdateSky();
}
}
}
private void UpdatePanel()
{
if (positionFinder.PositionName != null &&
positionFinder.PositionName.Length > 0)
{
Text = "PlanetFinder: " + positionFinder.PositionName;
}
else if (!useGps)
{
Text = "PlanetFinder";
}
longitudeTextBox.Text = String.Format(cultureInfo,
"{0:0.0}", positionFinder.Longitude);
latitudeTextBox.Text = String.Format(cultureInfo,
"{0:0.0}", positionFinder.Latitude);
}
private void Form1_Paint(object sender, PaintEventArgs e)
{
Graphics graph = e.Graphics;
int size = width > height ? height : width;
planetFinder.InitGraphics(graph, size, size);
planetFinder.updateSky(0);
if (planetFinder.NightTime)
{
// Adjust background color
this.BackColor = Color.DarkGray;
}
else
{
this.BackColor = Color.White;
}
}
private void menuItemExit_Click(object sender, EventArgs e)
{
Close();
}
private void menuItemPanel_Click(object sender, EventArgs e)
{
if (controlPanel.Visible)
{
controlPanel.Visible = false;
}
else
{
if (!useGps || gpsValid)
{
UpdatePanel();
controlPanel.Visible = true;
latitudeTextBox.Focus();
}
}
}
private void dateTimePicker1_ValueChanged(object sender, EventArgs e)
{
dateTime = dateTimePicker1.Value;
UpdateSky();
}
private void textBoxLatitude_LostFocus(object sender, EventArgs e)
{
if (controlPanel.Visible)
{
try
{
double val = Double.Parse(latitudeTextBox.Text, cultureInfo);
if (val != positionFinder.Latitude)
{
positionFinder.Latitude = val;
positionFinder.PositionName = "";
Text = "PlanetFinder";
UpdateSky();
}
}
catch (Exception)
{
}
}
}
private void textBoxLongitude_LostFocus(object sender, EventArgs e)
{
if (controlPanel.Visible)
{
try
{
double val = Double.Parse(longitudeTextBox.Text, cultureInfo);
if (val != positionFinder.Longitude)
{
positionFinder.Longitude = val;
positionFinder.PositionName = "";
Text = "PlanetFinder";
UpdateSky();
}
}
catch (Exception)
{
}
}
}
private void checkBoxNakedEyePlanetsOnly_CheckStateChanged(object sender, EventArgs e)
{
UpdateSky();
}
private void UpdateSky()
{
if (!useGps)
{
planetFinder.init(timeSettings.UTCOffset, positionFinder.Longitude,
positionFinder.Latitude, dateTime,
preferences.NakedEyePlanetsOnly);
}
else if (gpsValid)
{
planetFinder.init(0, gpsPosition.Longitude,
gpsPosition.Latitude, gpsPosition.Time,
preferences.NakedEyePlanetsOnly);
}
Invalidate();
}
private void menuItemPosition_Click(object sender, EventArgs e)
{
controlPanel.Visible = false;
PositionForm form = new PositionForm(timeSettings.Timezone);
form.PositionName = positionFinder.PositionName;
if (form.ShowDialog() == DialogResult.OK)
{
positionFinder.Longitude = form.Longitude;
positionFinder.Latitude = form.Latitude;
positionFinder.PositionName = form.PositionName;
UpdateSky();
UpdatePanel();
}
}
private void menuItemTime_Click(object sender, EventArgs e)
{
controlPanel.Visible = false;
TimeForm form = new TimeForm();
form.Auto = timeSettings.Auto;
form.Timezone = timeSettings.Timezone;
form.IsDaylightSavings = timeSettings.IsDaylightSavings;
if (form.ShowDialog() == DialogResult.OK)
{
double previousTimezone = timeSettings.Timezone;
timeSettings.Auto = form.Auto;
if (!form.Auto)
{
timeSettings.Timezone = form.Timezone;
}
if (previousTimezone != timeSettings.Timezone)
{
positionFinder.ChangeTimezone(timeSettings.Timezone);
MessageBox.Show("Timezone modified - Your position has changed!",
"PlanetFinder",
MessageBoxButtons.OK,
MessageBoxIcon.Asterisk,
MessageBoxDefaultButton.Button1);
UpdatePanel();
}
UpdateSky();
}
}
private void menuItemPreferences_Click(object sender, EventArgs e)
{
PreferencesForm form = new PreferencesForm(preferences.AutoUpdate,
preferences.NakedEyePlanetsOnly,
preferences.BacklightOff);
if (form.ShowDialog() == DialogResult.OK)
{
preferences.AutoUpdate = form.AutoUpdate;
preferences.NakedEyePlanetsOnly = form.NakedEyePlanetsOnly;
preferences.BacklightOff = form.BacklightOff;
if (!useGps)
{
AutoTimerEnable(preferences.AutoUpdate);
UpdateSky();
}
}
}
private void menuItemGps_Click(object sender, EventArgs e)
{
if (useGps)
{
GpsStop();
gpsPanel.Visible = false;
useGps = false;
menuItemGps.Checked = false;
menuItemSettings.Enabled = true;
longitudeTextBox.Enabled = true;
latitudeTextBox.Enabled = true;
dateTime = DateTime.Now;
dateTimePicker1.Value = dateTime;
AutoTimerEnable(preferences.AutoUpdate);
UpdatePanel();
UpdateSky();
}
else
{
useGps = true;
gpsValid = false;
menuItemGps.Checked = true;
menuItemSettings.Enabled = false;
longitudeTextBox.Enabled = false;
latitudeTextBox.Enabled = false;
Text = "PlanetFinder: Gps";
AutoTimerEnable(true);
gpsPanel.Visible = true;
GpsStart();
}
}
private void Form1_Closed(object sender, EventArgs e)
{
if (useGps)
{
GpsStop();
}
if (preferences.BacklightOff)
{
Backlight.Enable(true);
}
CityList.GetInstance().Save();
positionFinder.Close();
timeSettings.Close();
preferences.Close();
}
void suspendTimer_Tick(object sender, EventArgs e)
{
suspendTimer.Enabled = false;
autoUpdateTimer.Enabled = false;
if (useGps)
{
GpsStop();
}
if (preferences.BacklightOff)
{
Backlight.Enable(true);
}
suspendMode = true;
}
protected override void OnDeactivate(EventArgs e)
{
// Start the suspend Timer - release resources when the timer expires
suspendTimer.Enabled = true;
}
protected override void OnActivated(EventArgs e)
{
suspendTimer.Enabled = false;
if (suspendMode)
{
if (useGps)
{
AutoTimerEnable(true);
GpsStart();
}
else
{
AutoTimerEnable(preferences.AutoUpdate);
RefreshTime();
}
Backlight.Enable(!preferences.BacklightOff);
suspendMode = false;
}
}
#region Dll_imports
[DllImport("coredll.dll", EntryPoint = ("GetSystemMetrics"))]
public static extern int GetSystemMetrics(int nIndex);
private const int SM_CXSCREEN = 0;
private const int SM_CYSCREEN = 1;
#endregion
}
}
Submit an article or tip