private void TextBoxExLostFocus(object sender, EventArgs e)
{
if (textBox.Visible)
{
string text = textBox.Text;
Font font = textBox.Font;
Color color = textBox.ForeColor;
HideTextBox();
if (OperateManager.OperateCount > 0)
{
OperateObject obj = OperateManager.OperateList[OperateManager.OperateCount - 1];
if (obj.OperateType == OperateType.DrawText)
{
DrawTextData textData = obj.Data as DrawTextData;
if (!textData.Completed)
{
if (string.IsNullOrEmpty(text))
{
OperateManager.RedoOperate();
}
else
{
obj.Color = color;
textData.Font = font;
textData.Text = text;
textData.Completed = true;
}
}
}
}
Invalidate();
}
}
private void AddOperate(Point point)
{
if (!SelectImageRect.Contains(_mouseDownPoint))
{
return;
}
Color color = SelectedColor;
switch (DrawStyle)
{
case DrawStyle.Rectangle:
OperateManager.AddOperate(OperateType.DrawRectangle, color, ImageBoundsToRect(Rectangle.FromLTRB(_mouseDownPoint.X, _mouseDownPoint.Y, point.X, point.Y)));
break;
case DrawStyle.Ellipse:
OperateManager.AddOperate(OperateType.DrawEllipse, color, ImageBoundsToRect(Rectangle.FromLTRB(_mouseDownPoint.X, _mouseDownPoint.Y, point.X, point.Y)));
break;
case DrawStyle.Arrow:
Point[] points = { _mouseDownPoint, point };
OperateManager.AddOperate(OperateType.DrawArrow, color, points);
break;
case DrawStyle.Text:
ShowTextBox();
Rectangle textRect = ImageBoundsToRect(Rectangle.FromLTRB(_mouseDownPoint.X, _mouseDownPoint.Y, point.X, point.Y));
DrawTextData textData = new DrawTextData(string.Empty, Font, textRect);
OperateManager.AddOperate(OperateType.DrawText, color, textData);
break;
case DrawStyle.Line:
if (LinePointList.Count < 2)
{
return;
}
OperateManager.AddOperate(OperateType.DrawLine, color, LinePointList.ToArray());
LinePointList.Clear();
break;
}
}
private void DrawOperate(Graphics g)
{
foreach (OperateObject obj in OperateManager.OperateList)
{
switch (obj.OperateType)
{
case OperateType.DrawRectangle:
using (Pen pen = new Pen(obj.Color))
{
g.DrawRectangle(pen, (Rectangle)obj.Data);
}
break;
case OperateType.DrawEllipse:
using (Pen pen = new Pen(obj.Color))
{
g.DrawEllipse(pen, (Rectangle)obj.Data);
}
break;
case OperateType.DrawArrow:
Point[] points = obj.Data as Point[];
using (Pen pen = new Pen(obj.Color))
{
pen.EndCap = LineCap.Custom;
pen.CustomEndCap = new AdjustableArrowCap(4, 4, true);
if (points != null)
{
g.DrawLine(pen, points[0], points[1]);
}
}
break;
case OperateType.DrawText:
DrawTextData textdata = obj.Data as DrawTextData;
if (textdata != null && string.IsNullOrEmpty(textdata.Text))
{
using (Pen pen = new Pen(obj.Color))
{
pen.DashStyle = DashStyle.DashDot;
pen.DashCap = DashCap.Round;
pen.DashPattern = new[] { 9f, 3f, 3f, 3f };
g.DrawRectangle(pen, textdata.TextRect);
}
}
else
{
using (SolidBrush brush = new SolidBrush(obj.Color))
{
if (textdata != null)
{
g.DrawString(textdata.Text, textdata.Font, brush, textdata.TextRect);
}
}
}
break;
case OperateType.DrawLine:
using (Pen pen = new Pen(obj.Color))
{
g.DrawLines(pen, obj.Data as Point[]);
}
break;
}
}
}
protected override void OnMouseDown(MouseEventArgs e)
{
base.OnMouseDown(e);
if (textBox.Visible)
{
if (SelectImageRect.Contains(e.Location) || e.Button == MouseButtons.Left)
{
string text = textBox.Text;
Font font = textBox.Font;
Color color = textBox.ForeColor;
HideTextBox();
if (OperateManager.OperateCount > 0)
{
OperateObject obj = OperateManager.OperateList[OperateManager.OperateCount - 1];
if (obj.OperateType == OperateType.DrawText)
{
DrawTextData textData = obj.Data as DrawTextData;
if (textData != null && !textData.Completed)
{
if (string.IsNullOrEmpty(text))
{
OperateManager.RedoOperate();
}
else
{
obj.Color = color;
textData.Font = font;
textData.Text = text;
textData.Completed = true;
}
}
}
}
}
Invalidate();
return;
}
if (e.Button == MouseButtons.Left)
{
if (SelectedImage)
{
if (SizeGrip != SizeGrip.None)
{
_mouseDown = true;
_mouseDownPoint = e.Location;
HideDrawToolsControl();
Invalidate();
}
if (DrawStyle != DrawStyle.None)
{
if (SelectImageRect.Contains(e.Location))
{
_mouseDown = true;
_mouseDownPoint = e.Location;
if (DrawStyle == DrawStyle.Line)
{
LinePointList.Add(_mouseDownPoint);
}
ClipCursor(false);
}
}
}
else
{
_mouseDown = true;
_mouseDownPoint = e.Location;
}
}
}
