private ColorBgra[] GetPixelsFromPoint(PointD point)
{
var doc = PintaCore.Workspace.ActiveDocument;
var x = (int)point.X;
var y = (int)point.Y;
var size = SampleSize;
var half = size / 2;
// Short circuit for single pixel
if (size == 1)
{
return new ColorBgra[] { GetPixel(x, y) }
}
;
// Find the pixels we need (clamp to the size of the image)
var rect = new Gdk.Rectangle(x - half, y - half, size, size);
rect.Intersect(new Gdk.Rectangle(Gdk.Point.Zero, doc.ImageSize));
var pixels = new List <ColorBgra> ();
for (int i = rect.Left; i <= rect.GetRight(); i++)
{
for (int j = rect.Top; j <= rect.GetBottom(); j++)
{
pixels.Add(GetPixel(i, j));
}
}
return(pixels.ToArray());
}
public void SetSamplePoint(Gdk.Point p)
{
region.X = p.X;
region.Y = p.Y;
region.Width = 2 * radius;
region.Height = 2 * radius;
if (view.Pixbuf != null)
{
Gdk.Pixbuf pixbuf = view.Pixbuf;
region.Offset(-Math.Min(region.X, Math.Max(region.Right - pixbuf.Width, radius)),
-Math.Min(region.Y, Math.Max(region.Bottom - pixbuf.Height, radius)));
region.Intersect(new Gdk.Rectangle(0, 0, pixbuf.Width, pixbuf.Height));
}
UpdateSample();
}
private ColorBgra ComputeCellColor(int x, int y, ImageSurface src, int cellSize, Gdk.Rectangle srcBounds)
{
Gdk.Rectangle cell = GetCellBox(x, y, cellSize);
cell.Intersect(srcBounds);
int left = cell.Left;
int right = cell.GetRight();
int bottom = cell.GetBottom();
int top = cell.Top;
ColorBgra colorTopLeft = src.GetColorBgraUnchecked(left, top).ToStraightAlpha();
ColorBgra colorTopRight = src.GetColorBgraUnchecked(right, top).ToStraightAlpha();
ColorBgra colorBottomLeft = src.GetColorBgraUnchecked(left, bottom).ToStraightAlpha();
ColorBgra colorBottomRight = src.GetColorBgraUnchecked(right, bottom).ToStraightAlpha();
ColorBgra c = ColorBgra.BlendColors4W16IP(colorTopLeft, 16384, colorTopRight, 16384, colorBottomLeft, 16384, colorBottomRight, 16384);
return(c.ToPremultipliedAlpha());
}
private ColorBgra ComputeCellColor(int x, int y, ImageSurface src, int cellSize, Gdk.Rectangle srcBounds)
{
Gdk.Rectangle cell = GetCellBox(x, y, cellSize);
cell.Intersect(srcBounds);
int left = cell.Left;
int right = cell.Right - 1;
int bottom = cell.Bottom - 1;
int top = cell.Top;
ColorBgra colorTopLeft = src.GetColorBgra(left, top);
ColorBgra colorTopRight = src.GetColorBgra(right, top);
ColorBgra colorBottomLeft = src.GetColorBgra(left, bottom);
ColorBgra colorBottomRight = src.GetColorBgra(right, bottom);
ColorBgra c = ColorBgra.BlendColors4W16IP(colorTopLeft, 16384, colorTopRight, 16384, colorBottomLeft, 16384, colorBottomRight, 16384);
return(c);
}
private ColorBgra[] GetPixelsFromPoint(PointD point)
{
var doc = PintaCore.Workspace.ActiveDocument;
var x = (int)point.X;
var y = (int)point.Y;
var size = SampleSize;
var half = size / 2;
// Short circuit for single pixel
if (size == 1)
return new ColorBgra[] { GetPixel (x, y) };
// Find the pixels we need (clamp to the size of the image)
var rect = new Gdk.Rectangle (x - half, y - half, size, size);
rect.Intersect (new Gdk.Rectangle (Gdk.Point.Zero, doc.ImageSize));
var pixels = new List<ColorBgra> ();
for (int i = rect.Left; i <= rect.GetRight (); i++)
for (int j = rect.Top; j <= rect.GetBottom (); j++)
pixels.Add (GetPixel (i, j));
return pixels.ToArray ();
}
public void QueueDirtyRegion(Gdk.Rectangle region)
{
region.Intersect(Allocation);
QueueDrawArea(region.X, region.Y, region.Width, region.Height);
}
