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using System;
using Microsoft.SPOT;
using Microsoft.SPOT.Presentation.Controls;
// using YourApplication; // where the Resources class is
public class AnimatedCanvas : Canvas
// You can choose different control instead.
{
private DispatcherTimer _timer;
private int _startID;
private int _endID;
private int _currentID;
private Bitmap _currentBitmap;
private bool _loop;
private int _offsetX;
private int _offsetY;
public AnimatedCanvas()
{
_timer =
new DispatcherTimer(Dispatcher);
_timer.Tick +=
new EventHandler(OnNextFrame);
}
internal AnimatedCanvas(TimeSpan interval, Resources.BitmapResources startBitmap, Resources.BitmapResources endBitmap) :
this()
{
_timer.Interval = interval;
_startID = _currentID = (
int)startBitmap;
_endID = (
int)endBitmap;
if (_startID > _endID)
throw new ArgumentException();
_currentBitmap = Resources.GetBitmap(startBitmap);
}
public TimeSpan Interval {
get {
return _timer.Interval; }
set { _timer.Interval =
value; } }
public bool Loop {
get {
return _loop; }
set { _loop =
value; } }
public int BackgroundOffsetX {
get {
return _offsetX; }
set { _offsetX =
value; } }
public int BackgroundOffsetY {
get {
return _offsetY; }
set { _offsetY =
value; } }
public bool IsPlaying {
get {
return _timer.IsEnabled; }
set { _timer.IsEnabled =
value; } }
internal Resources.BitmapResources StartBitmap {
get {
return (Resources.BitmapResources)_startID; }
set { _startID = _currentID = (
int)
value; } }
internal Resources.BitmapResources EndBitmap {
get {
return (Resources.BitmapResources)_endID; }
set { _endID = (
int)
value; } }
public void Play()
{
_timer.Start();
}
public void Stop()
{
_timer.Stop();
}
public void Rewind()
{
_currentID = _startID;
Invalidate();
}
public override void OnRender(Microsoft.SPOT.Presentation.Media.DrawingContext dc)
{
dc.DrawImage(_currentBitmap, _offsetX, _offsetY);
base.OnRender(dc);
}
protected virtual void OnNextFrame(
object sender, EventArgs e)
{
_currentID++;
if (_currentID > _endID)
_currentID = _startID;
else if (_currentID == _endID)
if (!_loop)
_timer.Stop();
_currentBitmap = Resources.GetBitmap((Resources.BitmapResources)_currentID);
Invalidate();
}
}