void PaintRectangle(Rectangle area, InterpType interpolation)
{
int x_offset = scaled_width < Allocation.Width ? (int)(Allocation.Width - scaled_width) / 2 : -XOffset;
int y_offset = scaled_height < Allocation.Height ? (int)(Allocation.Height - scaled_height) / 2 : -YOffset;
//Draw background
if (y_offset > 0) //Top
{
PaintBackground(new Rectangle(0, 0, Allocation.Width, y_offset), area);
}
if (x_offset > 0) //Left
{
PaintBackground(new Rectangle(0, y_offset, x_offset, (int)scaled_height), area);
}
if (x_offset >= 0) //Right
{
PaintBackground(new Rectangle(x_offset + (int)scaled_width, y_offset, Allocation.Width - x_offset - (int)scaled_width, (int)scaled_height), area);
}
if (y_offset >= 0) //Bottom
{
PaintBackground(new Rectangle(0, y_offset + (int)scaled_height, Allocation.Width, Allocation.Height - y_offset - (int)scaled_height), area);
}
if (Pixbuf == null)
{
return;
}
area.Intersect(new Rectangle(x_offset, y_offset, (int)scaled_width, (int)scaled_height));
if (area.Width <= 0 || area.Height <= 0)
{
return;
}
//Short circuit for 1:1 zoom
if (zoom == 1.0 &&
!Pixbuf.HasAlpha &&
Pixbuf.BitsPerSample == 8 &&
pixbuf_orientation == ImageOrientation.TopLeft)
{
GdkWindow.DrawPixbuf(Style.BlackGC,
Pixbuf,
area.X - x_offset, area.Y - y_offset,
area.X, area.Y,
area.Width, area.Height,
RgbDither.Max,
area.X - x_offset, area.Y - y_offset);
return;
}
Rectangle pixbuf_area = PixbufUtils.TransformOrientation((int)scaled_width,
(int)scaled_height,
new Rectangle((area.X - x_offset),
(area.Y - y_offset),
area.Width,
area.Height),
PixbufUtils.ReverseTransformation(pixbuf_orientation));
using (Pixbuf temp_pixbuf = new Pixbuf(Colorspace.Rgb, false, 8, pixbuf_area.Width, pixbuf_area.Height)) {
if (Pixbuf.HasAlpha)
{
temp_pixbuf.Fill(0x00000000);
}
Pixbuf.CompositeColor(temp_pixbuf,
0, 0,
pixbuf_area.Width, pixbuf_area.Height,
-pixbuf_area.X, -pixbuf_area.Y,
zoom, zoom,
zoom == 1.0 ? InterpType.Nearest : interpolation, 255,
pixbuf_area.X, pixbuf_area.Y,
CheckPattern.CheckSize, CheckPattern.Color1, CheckPattern.Color2);
ApplyColorTransform(temp_pixbuf);
using (var dest_pixbuf = PixbufUtils.TransformOrientation(temp_pixbuf, pixbuf_orientation)) {
GdkWindow.DrawPixbuf(Style.BlackGC,
dest_pixbuf,
0, 0,
area.X, area.Y,
area.Width, area.Height,
RgbDither.Max,
area.X - x_offset, area.Y - y_offset);
}
}
}
public Point WindowCoordsToImage(Point win)
{
if (Pixbuf == null)
{
return(Point.Zero);
}
int x_offset = scaled_width < Allocation.Width ? (int)(Allocation.Width - scaled_width) / 2 : -XOffset;
int y_offset = scaled_height < Allocation.Height ? (int)(Allocation.Height - scaled_height) / 2 : -YOffset;
win.X = Clamp(win.X - x_offset, 0, (int)scaled_width - 1);
win.Y = Clamp(win.Y - y_offset, 0, (int)scaled_height - 1);
win = PixbufUtils.TransformOrientation((int)scaled_width, (int)scaled_height, win, PixbufUtils.ReverseTransformation(pixbuf_orientation));
return(new Point((int)Math.Floor(win.X * (double)(((int)PixbufOrientation <= 4 ? Pixbuf.Width : Pixbuf.Height) - 1) / (double)(scaled_width - 1) + .5),
(int)Math.Floor(win.Y * (double)(((int)PixbufOrientation <= 4 ? Pixbuf.Height : Pixbuf.Width) - 1) / (double)(scaled_height - 1) + .5)));
}