private void screenPreview_Paint(object sender, PaintEventArgs e)
{
if (_selectedScreen == null)
{
return;
}
string screenName = _selectedScreen.DeviceName;
var region = new ScreenRegion(screenName, new RectangleFSerializable(0, 0, 1, 1));
CaptureResult captureResult = _captureService.CaptureScreenRegions(new List <ScreenRegion> {
region
}, 0)[0];
Bitmap imageToShow;
if (captureResult.State == CaptureState.NoChanges)
{
if (_lastBitmap == null)
{
return;
}
imageToShow = _lastBitmap;
}
else if (captureResult.State == CaptureState.NewBitmap)
{
if (_lastBitmap != null)
{
_lastBitmap.Dispose();
}
imageToShow = captureResult.Bitmap;
_lastBitmap = imageToShow;
}
else
{
throw new InvalidOperationException("Invalid capture state");
}
e.Graphics.DrawImage(imageToShow, 0, 0, e.ClipRectangle.Width, e.ClipRectangle.Height);
var selectedRegionOutput = screenRegionsList.SelectedItem as ScreenRegionOutput;
foreach (ScreenRegionOutput screenRegionOutput in screenRegionsList.Items.Cast <ScreenRegionOutput>().Where(x => x.ScreenRegion.ScreenName == screenName))
{
var isSelected = selectedRegionOutput == screenRegionOutput;
RectangleFSerializable screenRegionRect = screenRegionOutput.ScreenRegion.Rectangle;
e.Graphics.DrawRectangle(isSelected ? Pens.Lime : Pens.Red,
screenRegionRect.X * e.ClipRectangle.Width,
screenRegionRect.Y * e.ClipRectangle.Height,
screenRegionRect.Width * e.ClipRectangle.Width,
screenRegionRect.Height * e.ClipRectangle.Height);
}
}
private static void SetRegion(ref RectangleFSerializable rectangle, PointF?topLeft, PointF?bottomRight)
{
PointF topLeftValue = topLeft ?? rectangle.Location;
PointF bottomRightValue = bottomRight ?? PointF.Add(rectangle.Location, rectangle.Size);
if (topLeftValue.X > bottomRightValue.X)
{
bottomRightValue.X = topLeftValue.X;
}
if (topLeftValue.Y > bottomRightValue.Y)
{
bottomRightValue.Y = topLeftValue.Y;
}
rectangle.X = topLeftValue.X;
rectangle.Y = topLeftValue.Y;
rectangle.Width = bottomRightValue.X - topLeftValue.X;
rectangle.Height = bottomRightValue.Y - topLeftValue.Y;
}
private void screenPreview_Click(object sender, EventArgs e)
{
var mouseArgs = e as MouseEventArgs;
if (mouseArgs == null || mouseArgs.Button != MouseButtons.Left)
{
return;
}
float posX = (float)mouseArgs.X / screenPreview.Width;
float posY = (float)mouseArgs.Y / screenPreview.Height;
var region = screenRegionsList.SelectedItem as ScreenRegionOutput;
if (region != null)
{
RectangleFSerializable rect = region.ScreenRegion.Rectangle;
switch (_screenClickMode)
{
case ScreenClickMode.None:
return;
case ScreenClickMode.SetTopLeft:
SetRegion(ref rect, new PointF(posX, posY), null);
break;
case ScreenClickMode.SetBottomRight:
SetRegion(ref rect, null, new PointF(posX, posY));
break;
default:
throw new ArgumentOutOfRangeException();
}
region.ScreenRegion = new ScreenRegion(_selectedScreen.DeviceName, rect);
}
UpdateSelectedItem(screenRegionsList);
SetScreenClickMode(ScreenClickMode.None);
}
public ScreenRegion(string screenName, RectangleFSerializable rectangle)
{
ScreenName = screenName;
Rectangle = rectangle;
}
