/// <summary>
/// Called when we've to draw the image.
/// </summary>
/// <param name="graphics">The graphics.</param>
private void OnDraw(Graphics2D graphics)
{
if (IsDisposed) { throw new ObjectDisposedException("ImageDataFlowHelper"); }
if (this.SyncBuffer == null) { return; }
// Change bitmap contents if needed
if (this.SyncBufferChanged)
{
lock (this.SyncBufferLock)
{
// Recreate bitmap on need
if ((this.BitmapSize != this.SyncBufferSize) ||
(this.Bitmap == null))
{
CommonTools.SafeDispose(ref this.Bitmap);
this.Bitmap = new WriteableBitmapResource(
new Size2(this.SyncBufferSize.Width, this.SyncBufferSize.Height),
BitmapFormat.Bgra, AlphaMode.Ignore);
this.BitmapSize = this.SyncBufferSize;
}
// Write data from SyncBuffer to bitmap
this.Bitmap.SetBitmapContent(
graphics,
this.SyncBuffer.Pointer,
this.SyncBuffer.Pitch);
}
}
// Draw the bitmap on the screen
if ((this.Bitmap != null) &&
(this.BitmapSize.Width > 0) &&
(this.BitmapSize.Height > 0))
{
graphics.Clear(Color4.Transparent);
// Draw the current contents of the stream
RectangleF viewBounds = new RectangleF(
0f, 0f,
graphics.ScreenSize.Width, graphics.ScreenSize.Height);
graphics.DrawBitmap(this.Bitmap, viewBounds);
// Draw the stream's name
RectangleF titleBounds = new RectangleF(
viewBounds.Width / 2f - 100f,
10f,
200f, 30f);
graphics.FillRoundedRectangle(titleBounds, 5f, 5f, this.TextBackground);
graphics.DrawText(
this.StreamName, this.TextFormat,
titleBounds,
this.TextForeground);
}
}
/// <inheritdoc />
protected override void Draw2D(Graphics2D graphics)
{
base.Draw2D(graphics);
if (!_enabled)
{
return;
}
RectangleF targetRectFull;
switch (_currentType)
{
case PerformanceDrawingLayerType.FramesPerSecond:
// Get display text
var fpsText = "-";
if (_lastRender != DateTime.MinValue)
{
_lastTimeSpans.Add(DateTime.UtcNow - _lastRender);
while (_lastTimeSpans.Count > 30)
{
_lastTimeSpans.RemoveAt(0);
}
var averageTime = _lastTimeSpans
.Select(actTimeSpan => actTimeSpan.TotalMilliseconds)
.Average();
fpsText = Math.Round(1000f / averageTime, 0).ToString(CultureInfo.InvariantCulture);
}
_lastRender = DateTime.UtcNow;
// Render display text
targetRectFull = new RectangleF(
graphics.ScreenWidth - 120f, 10f + _verticalPadding, 100f, 22f);
graphics.FillRectangle(targetRectFull, _backBrush);
graphics.DrawRectangle(targetRectFull, _borderBrush);
graphics.DrawText($"FPS: {fpsText}", _textFormatCentered, targetRectFull, _foreBrush, DrawTextOptions.Clip);
break;
case PerformanceDrawingLayerType.PressedKeys:
// Build display text
var stringBuilder = new StringBuilder(16);
foreach (var actKeyDown in _keysDown)
{
if (stringBuilder.Length > 0)
{
stringBuilder.Append(", ");
}
stringBuilder.Append(actKeyDown.ToString());
}
// Render background for display text
targetRectFull = new RectangleF(
graphics.ScreenWidth - 220f, 10f + _verticalPadding, 200f, 66f);
graphics.FillRectangle(targetRectFull, _backBrush);
graphics.DrawRectangle(targetRectFull, _borderBrush);
// Render header
var targetRectHeader = targetRectFull;
targetRectHeader.Height -= 44f;
targetRectHeader.Inflate(-3f, -3f);
graphics.DrawText("Keys down:", _textFormatLeftAligned, targetRectHeader, _foreBrush);
// Render content area
var targetRectContent = targetRectFull;
targetRectContent.Height -= 22f;
targetRectContent.Y += 22f;
targetRectContent.Inflate(-3f, -3f);
graphics.DrawText(stringBuilder.ToString(), _textFormatLeftAligned, targetRectContent, _foreBrush);
break;
}
}