public static Surface LoadFromGZippedBytes(string path)
{
using FileStream compressedData = new(path, FileMode.Open);
using GZipStream uncompressedData = new(compressedData, CompressionMode.Decompress);
using MemoryStream resultBytes = new();
uncompressedData.CopyTo(resultBytes);
byte[] bytes = resultBytes.ToArray();
int width = BitConverter.ToInt32(bytes, 0);
int height = BitConverter.ToInt32(bytes, 4);
SKImageInfo info = new SKImageInfo(width, height, SKColorType.RgbaF16);
var ptr = Marshal.AllocHGlobal(bytes.Length - 8);
try
{
Marshal.Copy(bytes, 8, ptr, bytes.Length - 8);
SKPixmap map = new(info, ptr);
SKSurface surface = SKSurface.Create(map);
var finalSurface = new Surface(width, height);
surface.Draw(finalSurface.SkiaSurface.Canvas, 0, 0, Surface.ReplacingPaint);
return(finalSurface);
}
finally
{
Marshal.FreeHGlobal(ptr);
}
}
public void DrawSurface(SKSurface surface, float x, float y, SKPaint paint = null)
{
surface.Draw(canvas, x, y, paint);
if (calculateBounds)
{
displayObject.addBoundingRect(x, y, canvas.LocalClipBounds.Width, canvas.LocalClipBounds.Height);
}
}
void DrawBackground()
{
var backgroundOffset = GetBackgroundOffset();
Background.Draw(Canvas, backgroundOffset.X, backgroundOffset.Y, null);
}
public void Visualize(SKCanvas canvas, SKRect rect)
{
// Initialize visualize cache if it has not yet been initialized.
InitVisualizeSurface(rect);
var cache_canvas = visualize_cache_surface_.Canvas;
var paint = new SKPaint();
// Establish the graph position.
float x = 0f;
float y = 0f;
float width = rect.Width;
float height = rect.Height;
// Scale the graph to show frame times up to those that are 3 times the frame
// time.
float max_interval = kOneFrameMS * 3.0f;
float max_unit_interval = UnitFrameInterval(max_interval);
float sample_unit_width = (1.0f / kMaxSamples);
// Draw vertical replacement bar to erase old/stale pixels.
paint.Color = new SKColor(0x99FFFFFF);
paint.Style = SKPaintStyle.Fill;
paint.BlendMode = SKBlendMode.Src;
float sample_x = x + width * ((float)prev_drawn_sample_index_ / kMaxSamples);
var eraser_rect = new SKRect(sample_x, y, sample_x + width * sample_unit_width, height);
cache_canvas.DrawRect(eraser_rect, paint);
// Draws blue timing bar for new data.
paint.Color = new SKColor(0xAA0000FF);
paint.BlendMode = SKBlendMode.SrcOver;
var bar_rect = new SKRect(
sample_x,
y + height *
(1.0f - UnitHeight((float)laps_[current_sample_ == 0 ? kMaxSamples - 1 : current_sample_ - 1].TotalMilliseconds, max_unit_interval)),
sample_x + width * sample_unit_width,
height);
cache_canvas.DrawRect(bar_rect, paint);
// Draw horizontal frame markers.
paint.StrokeWidth = 0; // hairline
paint.Style = SKPaintStyle.Stroke;
paint.Color = new SKColor(0xCC000000);
if (max_interval > kOneFrameMS)
{
// Paint the horizontal markers
int frame_marker_count = (int)(max_interval / kOneFrameMS);
// Limit the number of markers displayed. After a certain point, the graph
// becomes crowded
if (frame_marker_count > kMaxFrameMarkers)
{
frame_marker_count = 1;
}
for (int frame_index = 0; frame_index < frame_marker_count; frame_index++)
{
float frame_height =
height * (1.0f - (UnitFrameInterval((frame_index + 1) * kOneFrameMS) / max_unit_interval));
cache_canvas.DrawLine(
x,
y + frame_height,
width,
y + frame_height,
paint);
}
}
// Paint the vertical marker for the current frame.
// We paint it over the current frame, not after it, because when we
// paint this we don't yet have all the times for the current frame.
paint.Style = SKPaintStyle.Fill;
paint.BlendMode = SKBlendMode.SrcOver;
if (UnitFrameInterval((float)LastLap().TotalMilliseconds) > 1.0f)
{
// budget exceeded
paint.Color = SKColors.Red;
}
else
{
// within budget
paint.Color = SKColors.Green;
}
sample_x = x + width * ((float)current_sample_ / kMaxSamples);
var marker_rect = new SKRect(
sample_x,
y,
sample_x + width * sample_unit_width,
height);
cache_canvas.DrawRect(marker_rect, paint);
prev_drawn_sample_index_ = current_sample_;
// Draw the cached surface onto the output canvas.
paint = new SKPaint();
visualize_cache_surface_.Draw(canvas, rect.Left, rect.Top, paint);
}
