private void Capture_MouseMove(object sender, MouseEventArgs e)
{
if (isClicking)
{
if (state == SelectionEditState.DrawingRectFrame)
{
RectFrame frame = rectFrameList[rectFrameList.Count - 1];
if (e.X < Math.Min(x1, x2))
{
frame.x2 = Math.Min(x1, x2);
}
else if (e.X > Math.Max(x1, x2))
{
frame.x2 = Math.Max(x1, x2);
}
else
{
frame.x2 = e.X;
}
if (e.Y < Math.Min(y1, y2))
{
frame.y2 = Math.Min(y1, y2);
}
else if (e.Y > Math.Max(y1, y2))
{
frame.y2 = Math.Max(y1, y2);
}
else
{
frame.y2 = e.Y;
}
rectFrameList[rectFrameList.Count - 1] = frame;
}
else if (currentCP == ControlPoints.None) // first/re select
/*x2 += e.X - old_x;
* y2 += e.Y - old_y;
* old_x = e.X;
* old_y = e.Y;*/
{
x2 = e.X;
y2 = e.Y;
}
else // modifying selection
{
if (currentCP == ControlPoints.LeftTop ||
currentCP == ControlPoints.LeftBottom ||
currentCP == ControlPoints.RightTop ||
currentCP == ControlPoints.RightBottom)
{
x2 = e.X;
y2 = e.Y;
}
else if (currentCP == ControlPoints.Left ||
currentCP == ControlPoints.Right)
{
x2 = e.X;
}
else if (currentCP == ControlPoints.Top ||
currentCP == ControlPoints.Bottom)
{
y2 = e.Y;
}
else if (currentCP == ControlPoints.Inside)
{
int dx, dy, minX, minY, maxX, maxY;
dx = e.X - old_x;
dy = e.Y - old_y;
minX = Math.Min(x1, x2);
minY = Math.Min(y1, y2);
maxX = Math.Max(x1, x2);
maxY = Math.Max(y1, y2);
if (minX + dx < 0)
{
dx = -minX;
}
else if (maxX + dx >= screenShot.Width)
{
dx = screenShot.Width - maxX - 1;
}
if (minY + dy < 0)
{
dy = -minY;
}
else if (maxY + dy >= screenShot.Height)
{
dy = screenShot.Height - maxY - 1;
}
x1 += dx;
y1 += dy;
x2 += dx;
y2 += dy;
old_x = e.X;
old_y = e.Y;
}
}
this.Refresh();
}
else // mouse left button not clicking
//check if mouse clicked on control points
{
if (state == SelectionEditState.Selected) // not possible to clicked on CP if no selections yet
{
currentCP = getControlPoint(e.X, e.Y);
}
}
//this.Refresh();
}
private void Capture_MouseDown(object sender, MouseEventArgs e)
{
int tx1, ty1, tx2, ty2; // tmp x, y
if (e.Button == MouseButtons.Left)
{
isClicking = true;
if (state == SelectionEditState.DrawingRectFrame) // is drawing rect frame
{
if (e.X < Math.Min(x1, x2) || e.X > Math.Max(x1, x2) || e.Y < Math.Min(y1, y2) || e.Y > Math.Max(y1, y2))
{
// start position out of range, cancel current clicking
isClicking = false;
return;
}
RectFrame frame = new RectFrame();
frame.x1 = e.X;
frame.y1 = e.Y;
rectFrameList.Add(frame);
}
else // selection
{
switch (currentCP)
{
case ControlPoints.None: // first/re select
state = SelectionEditState.Selecting;
rectFrameList.Clear();
x1 = x2 = old_x = e.X;
y1 = y2 = old_y = e.Y;
break;
case ControlPoints.Top:
case ControlPoints.Left:
case ControlPoints.LeftTop: // modifying selection
tx2 = Math.Min(x1, x2);
ty2 = Math.Min(y1, y2);
tx1 = Math.Max(x1, x2);
ty1 = Math.Max(y1, y2);
x1 = tx1;
y1 = ty1;
x2 = tx2;
y2 = ty2;
break;
case ControlPoints.Bottom:
case ControlPoints.Right:
case ControlPoints.RightBottom:
tx2 = Math.Max(x1, x2);
ty2 = Math.Max(y1, y2);
tx1 = Math.Min(x1, x2);
ty1 = Math.Min(y1, y2);
x1 = tx1;
y1 = ty1;
x2 = tx2;
y2 = ty2;
break;
case ControlPoints.LeftBottom:
tx2 = Math.Min(x1, x2);
ty2 = Math.Max(y1, y2);
tx1 = Math.Max(x1, x2);
ty1 = Math.Min(y1, y2);
x1 = tx1;
y1 = ty1;
x2 = tx2;
y2 = ty2;
break;
case ControlPoints.RightTop:
tx2 = Math.Max(x1, x2);
ty2 = Math.Min(y1, y2);
tx1 = Math.Min(x1, x2);
ty1 = Math.Max(y1, y2);
x1 = tx1;
y1 = ty1;
x2 = tx2;
y2 = ty2;
break;
case ControlPoints.Inside:
old_x = e.X;
old_y = e.Y;
break;
}
}
}
else if (e.Button == MouseButtons.Right)
{
if (state == SelectionEditState.NoSelection)
{
abortClip();
return;
}
commitClip();
}
}