private void Window_Loaded(object sender, RoutedEventArgs e)
{
_graphics = new SilverlightGraphics (LayoutRoot);
var timer = new DispatcherTimer {
Interval = TimeSpan.FromSeconds (1),
};
timer.Tick += delegate {
Draw ();
};
timer.Start ();
}
private void PhoneApplicationPage_Loaded(object sender, RoutedEventArgs e)
{
//
// Initialize the graphics context
//
_graphics = new SilverlightGraphics (LayoutRoot);
//
// Create a timer to refresh the clock
//
var timer = new DispatcherTimer {
Interval = TimeSpan.FromSeconds (1),
};
timer.Tick += delegate {
Draw ();
};
timer.Start ();
}
double Draw()
{
var del = Content;
if (del == null) return 0;
if (_graphics == null) {
_graphics = new SilverlightGraphics (this);
}
var startT = DateTime.Now;
_graphics.BeginDrawing ();
_graphics.BeginEntity (del);
//
// Draw
//
var fr = new RectangleF (0, 0, (float)ActualWidth, (float)ActualHeight);
if (_ppi != NativePointsPerInch) {
fr.Width /= _ppi / (float)NativePointsPerInch;
fr.Height /= _ppi / (float)NativePointsPerInch;
}
del.Frame = fr;
try {
del.Draw (_graphics);
}
catch (Exception) {
}
_graphics.EndDrawing ();
var endT = DateTime.Now;
return (endT - startT).TotalSeconds;
}
public void ResetGraphics()
{
_graphics = null;
}
void DrawTick(object sender, DispatcherTimerTickEventArgs e)
{
if (Paused) {
_drawCount = 0;
_drawTime = 0;
return;
}
var del = Delegate;
if (del == null) return;
if (_graphics == null) {
_graphics = new SilverlightGraphics(this);
}
var good = ActualWidth > 0 && ActualHeight > 0;
if (!good) return;
//
// Start drawing
//
var startT = DateTime.Now;
_graphics.BeginDrawing();
//
// Draw
//
var fr = new RectangleF(0, 0, (float)ActualWidth, (float)ActualHeight);
if (_ppi != NativePointsPerInch) {
fr.Width /= _ppi/(float) NativePointsPerInch;
fr.Height /= _ppi / (float)NativePointsPerInch;
}
del.Frame = fr;
try {
del.Draw (_graphics);
}
catch (Exception) {
}
//
// End drawing
//
_graphics.EndDrawing();
var endT = DateTime.Now;
_drawTime += (endT - startT).TotalSeconds;
_drawCount++;
//
// Throttle
//
if (_drawCount > 2 && (DateTime.Now - _lastThrottleTime) >= ThrottleInterval) {
_lastThrottleTime = DateTime.Now;
var maxfps = 1.0 / (_drawTime / _drawCount);
_drawTime = 0;
_drawCount = 0;
var fps = ClampUpdateFreq((int)(maxfps * CpuUtilization));
if (Math.Abs(fps - _fps) > 1) {
_fps = fps;
Start();
}
}
//
// Notify
//
var df = DrewFrame;
if (df != null) {
df(this, EventArgs.Empty);
}
}
