void cropResize()
{
if (!imageCroppingBox1.Visible)
{
return;
}
int scr_width = pictureBox1.Width;
int scr_height = pictureBox1.Height;
var aspect_ratio = FFplay.ffplay_get_aspect_ratio();
_width = FFplay.ffplay_get_w();
_height = FFplay.ffplay_get_h();
int width = _width, height = _height;
if (width < 1 || height < 1)
{
return;
}
height = scr_height;
width = (int)Math.Ceiling(height * aspect_ratio) & ~1;
if (width > scr_width)
{
width = scr_width;
height = (int)Math.Ceiling(width / aspect_ratio) & ~1;
}
int x = (scr_width - width) / 2;
int y = (scr_height - height) / 2;
var oldScale = cropScale;
cropScale = (double)_width / width;
var newScale = oldScale / cropScale;
imageCroppingBox1.Left = x;
imageCroppingBox1.Top = y;
imageCroppingBox1.Size = new Size(width, height);
if (imageCroppingBox1.IsDrawed)
{
imageCroppingBox1.SelectedRectangle = new Rectangle(
(int)(imageCroppingBox1.SelectedRectangle.X * newScale)
, (int)(imageCroppingBox1.SelectedRectangle.Y * newScale)
, (int)(imageCroppingBox1.SelectedRectangle.Width * newScale)
, (int)(imageCroppingBox1.SelectedRectangle.Height * newScale));
}
showCropInfo();
}
void cropStart()
{
cropAction = () =>
{
if (FFplay.ffplay_get_w() < 1 || FFplay.ffplay_get_h() < 1)
{
return;
}
imageCroppingBox1.Clear();
imageCroppingBox1.Show();
cropResize();
cropAction = null;
};
timer2.Start();
}