private void TextBoxExLostFocus(object sender, EventArgs e)
{
if (textBox.Visible)
{
string text = textBox.Text;
Font font = textBox.Font;
Color color = textBox.ForeColor;
HideTextBox();
if (this.pictureBox1.OperateManager.OperateCount > 0)
{
OperateObject obj =
this.pictureBox1.OperateManager.OperateList[this.pictureBox1.OperateManager.OperateCount - 1];
if (obj.OperateType == OperateType.DrawText)
{
DrawTextData textData = obj.Data as DrawTextData;
if (!textData.Completed)
{
if (string.IsNullOrEmpty(text))
{
this.pictureBox1.OperateManager.RedoOperate();
}
else
{
obj.Color = color;
textData.Font = font;
textData.Text = text;
textData.Completed = true;
}
}
}
}
base.Invalidate();
}
}
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);
g.DrawLine(pen, points[0], points[1]);
}
break;
case OperateType.DrawLine:
using (Pen pen = new Pen(obj.Color))
{
g.DrawLines(pen, obj.Data as Point[]);
}
break;
case OperateType.DrawText:
DrawTextData textdata = obj.Data as DrawTextData;
if (string.IsNullOrEmpty(textdata.Text))
{
using (Pen pen = new Pen(obj.Color))
{
pen.DashStyle = DashStyle.DashDot;
pen.DashCap = DashCap.Round;
pen.DashPattern = new float[] { 9f, 3f, 3f, 3f };
g.DrawRectangle(
pen,
textdata.TextRect);
}
}
else
{
using (SolidBrush brush = new SolidBrush(obj.Color))
{
g.DrawString(
textdata.Text,
textdata.Font,
brush,
textdata.TextRect);
}
}
break;
}
}
}
private void AddOperate(Point point)
{
Color color = this.SelectColor;
switch (DrawStyle)
{
case DrawStyle.Rectangle:
OperateManager.AddOperate(
OperateType.DrawRectangle,
color,
Rectangle.FromLTRB(
_mouseDownPoint.X,
_mouseDownPoint.Y,
point.X,
point.Y));
break;
case DrawStyle.Ellipse:
OperateManager.AddOperate(
OperateType.DrawEllipse,
color,
Rectangle.FromLTRB(
_mouseDownPoint.X,
_mouseDownPoint.Y,
point.X,
point.Y));
break;
case DrawStyle.Arrow:
Point[] points = new Point[] { _mouseDownPoint, point };
OperateManager.AddOperate(
OperateType.DrawArrow,
color,
points);
break;
case DrawStyle.Line:
if (LinePointList.Count < 2)
{
return;
}
OperateManager.AddOperate(
OperateType.DrawLine,
color,
LinePointList.ToArray());
LinePointList.Clear();
break;
case DrawStyle.Text:
EventHandler handler = base.Events[EventTextBoxShow] as EventHandler;
if (handler != null)
{
handler(this, new EventArgs());
}
Rectangle textRect = Rectangle.FromLTRB(
_mouseDownPoint.X,
_mouseDownPoint.Y,
point.X,
point.Y);
DrawTextData textData = new DrawTextData(
string.Empty,
base.Font,
textRect);
OperateManager.AddOperate(
OperateType.DrawText,
color,
textData);
break;
}
}