/// <summary>
/// Add new object to draw area.
/// Function is called when user left-clicks draw area,
/// and one of ToolObject-derived tools is active.
/// </summary>
/// <param name="drawArea"></param>
/// <param name="o"></param>
protected void AddNewObject(ImageDrawBox drawArea, DrawObject o)
{
drawArea.GraphicsList.UnselectAll();
o.Selected = true;
drawArea.GraphicsList.Add(o);
drawArea.Capture = true;
drawArea.Refresh();
drawArea.SetDirty();
}
public override void OnMouseMove(ImageDrawBox drawArea, MouseEventArgs e)
{
Point pointscroll = GetEventPointInArea(drawArea, e);
drawArea.Cursor = Cursor;
if (e.Button == MouseButtons.Left)
{
drawArea.GraphicsList[0].MoveHandleTo(pointscroll, 5);
drawArea.Refresh();
drawArea.GraphicsList.Dirty = true;
}
}
/// <summary>
/// Right mouse button is released
/// </summary>
/// <param name="drawArea"></param>
/// <param name="e"></param>
public override void OnMouseUp(ImageDrawBox drawArea, MouseEventArgs e)
{
if (selectMode == SelectionMode.NetSelection)
{
// Remove old selection rectangle
ControlPaint.DrawReversibleFrame(
drawArea.RectangleToScreen(DrawRectangle.GetNormalizedRectangle(startPoint, lastPoint)),
Color.Black,
FrameStyle.Dashed);
//Point pointscroll = GetEventPointInArea(drawArea, e);
// Make group selection
//zhoujin - user zoomfactor
//drawArea.GraphicsList.SelectInRectangle(
// DrawRectangle.GetNormalizedRectangle(new Point(startPoint.X + Math.Abs(drawArea.AutoScrollPosition.X), startPoint.Y + Math.Abs(drawArea.AutoScrollPosition.Y)),
// new Point(lastPoint.X + Math.Abs(drawArea.AutoScrollPosition.X), lastPoint.Y + Math.Abs(drawArea.AutoScrollPosition.Y))));
double zoomFactor = drawArea.ZoomFactor;
drawArea.GraphicsList.SelectInRectangle(
DrawRectangle.GetNormalizedRectangle(new Point(ConvertToZoomed(startPoint.X, zoomFactor), ConvertToZoomed(startPoint.Y, zoomFactor)),
new Point(ConvertToZoomed(lastPoint.X, zoomFactor), ConvertToZoomed(lastPoint.Y, zoomFactor))));
selectMode = SelectionMode.None;
}
if (resizedObject != null)
{
// after resizing
resizedObject.Normalize();
resizedObject = null;
}
drawArea.Capture = false;
drawArea.Refresh();
drawArea.GraphicsList.Dirty = true;
if (commandChangeState != null && wasMove)
{
// Keep state after moving/resizing and add command to history
commandChangeState.NewState(drawArea.GraphicsList);
drawArea.AddCommandToHistory(commandChangeState);
commandChangeState = null;
}
}
/// <summary>
/// Left mouse is released.
/// New object is created and resized.
/// </summary>
/// <param name="drawArea"></param>
/// <param name="e"></param>
public override void OnMouseUp(ImageDrawBox drawArea, MouseEventArgs e)
{
drawArea.GraphicsList[0].Normalize();
drawArea.AddCommandToHistory(new CommandAdd(drawArea.GraphicsList[0]));
drawArea.ActiveTool = ImageDrawBox.DrawToolType.Pointer;
//TODO : 这部分代码需要整理
//zhoujin: 如果是正在定标则删除图形，并弹出定标窗口
if (drawArea.DrawMode == ImageDrawBox.DrawingMode.SetUnit)
{
DrawObject drawObj = drawArea.GraphicsList[0];
//定标只支持用画直线的方式
if (drawObj is DrawLine)
{
DrawLine drawLine = drawObj as DrawLine;
double pxLen = CalcLenght(drawLine.StartPoint, drawLine.EndPoint);
SetUnitForm setUnitForm = new SetUnitForm(drawArea, pxLen);
setUnitForm.ShowDialog();
drawArea.GraphicsList.DeleteLastAddedObject();
drawArea.DrawMode = ImageDrawBox.DrawingMode.Measure;
}
}
if (drawArea.DrawMode == ImageDrawBox.DrawingMode.SetROI)
{
DrawObject drawObj = drawArea.GraphicsList[0];
//设置ROI只支持用矩形绘制
if (drawObj is DrawRectangle)
{
DrawRectangle drawRect = drawObj as DrawRectangle;
drawArea.SetROI(drawRect.GetBoundingBox());
drawArea.GraphicsList.DeleteLastAddedObject();
drawArea.DrawMode = ImageDrawBox.DrawingMode.Measure;
}
}
drawArea.Capture = false;
drawArea.Refresh();
drawArea.GraphicsList.Dirty = true;
}
/// <summary>
/// Mouse move - resize new polygon
/// </summary>
/// <param name="drawArea"></param>
/// <param name="e"></param>
public override void OnMouseMove(ImageDrawBox drawArea, MouseEventArgs e)
{
Point p = GetEventPointInArea(drawArea, e);
drawArea.Cursor = Cursor;
if (e.Button != MouseButtons.Left)
{
return;
}
if (newPolygon == null)
{
return; // precaution
}
Point point = new Point(p.X, p.Y);
int distance = (p.X - lastX) * (p.X - lastX) + (p.Y - lastY) * (p.Y - lastY);
if (distance < minDistance)
{
// Distance between last two points is less than minimum -
// move last pointscroll
newPolygon.MoveHandleTo(point, newPolygon.HandleCount);
drawArea.GraphicsList.Dirty = true;
}
else
{
// Add new pointscroll
newPolygon.AddPoint(point);
lastX = p.X;
lastY = p.Y;
drawArea.GraphicsList.Dirty = true;
}
drawArea.Refresh();
}
/// <summary>
/// Left mouse button is pressed
/// </summary>
/// <param name="drawArea"></param>
/// <param name="e"></param>
public override void OnMouseDown(ImageDrawBox drawArea, MouseEventArgs e)
{
Point pointscroll = GetEventPointInArea(drawArea, e);
commandChangeState = null;
wasMove = false;
selectMode = SelectionMode.None;
// Test for resizing (only if control is selected, cursor is on the handle)
foreach (DrawObject o in drawArea.GraphicsList.Selection)
{
int handleNumber = o.HitTest(pointscroll);
if (handleNumber > 0)
{
selectMode = SelectionMode.Size;
// keep resized object in class member
resizedObject = o;
resizedObjectHandle = handleNumber;
// Since we want to resize only one object, unselect all other objects
drawArea.GraphicsList.UnselectAll();
o.Selected = true;
commandChangeState = new CommandChangeState(drawArea.GraphicsList);
drawArea.GraphicsList.Dirty = true;
break;
}
}
// Test for move (cursor is on the object)
if (selectMode == SelectionMode.None)
{
int n1 = drawArea.GraphicsList.Count;
DrawObject o = null;
for (int i = 0; i < n1; i++)
{
if (drawArea.GraphicsList[i].HitTest(pointscroll) == 0)
{
o = drawArea.GraphicsList[i];
break;
}
}
if (o != null)
{
selectMode = SelectionMode.Move;
// Unselect all if Ctrl is not pressed and clicked object is not selected yet
if ((Control.ModifierKeys & Keys.Control) == 0 && !o.Selected)
{
drawArea.GraphicsList.UnselectAll();
}
// Select clicked object
o.Selected = true;
commandChangeState = new CommandChangeState(drawArea.GraphicsList);
drawArea.Cursor = Cursors.SizeAll;
drawArea.GraphicsList.Dirty = true;
}
}
// Net selection
if (selectMode == SelectionMode.None)
{
// click on background
if ((Control.ModifierKeys & Keys.Control) == 0)
{
drawArea.GraphicsList.UnselectAll();
}
selectMode = SelectionMode.NetSelection;
}
lastPoint.X = e.X;
lastPoint.Y = e.Y;
startPoint.X = e.X;
startPoint.Y = e.Y;
drawArea.Capture = true;
drawArea.Refresh();
if (selectMode == SelectionMode.NetSelection)
{
// Draw selection rectangle in initial position
ControlPaint.DrawReversibleFrame(
drawArea.RectangleToScreen(DrawRectangle.GetNormalizedRectangle(startPoint, lastPoint)),
Color.Black,
FrameStyle.Dashed);
}
}
/// <summary>
/// Mouse is moved.
/// None button is pressed, or left button is pressed.
/// </summary>
/// <param name="drawArea"></param>
/// <param name="e"></param>
public override void OnMouseMove(ImageDrawBox drawArea, MouseEventArgs e)
{
Point pointscroll = GetEventPointInArea(drawArea, e);
Point oldPoint = lastPoint;
wasMove = true;
// set cursor when mouse button is not pressed
if (e.Button == MouseButtons.None)
{
Cursor cursor = null;
for (int i = 0; i < drawArea.GraphicsList.Count; i++)
{
int n = drawArea.GraphicsList[i].HitTest(pointscroll);
if (n > 0)
{
cursor = drawArea.GraphicsList[i].GetHandleCursor(n);
break;
}
}
if (cursor == null)
{
cursor = Cursors.Default;
}
drawArea.Cursor = cursor;
return;
}
if (e.Button != MouseButtons.Left)
{
return;
}
/// Left button is pressed
// Find difference between previous and current position
int dx = e.X - lastPoint.X;
int dy = e.Y - lastPoint.Y;
lastPoint.X = e.X;
lastPoint.Y = e.Y;
// resize
if (selectMode == SelectionMode.Size)
{
if (resizedObject != null)
{
resizedObject.MoveHandleTo(pointscroll, resizedObjectHandle);
drawArea.SetDirty();
drawArea.Refresh();
drawArea.GraphicsList.Dirty = true;
}
}
// move
if (selectMode == SelectionMode.Move)
{
foreach (DrawObject o in drawArea.GraphicsList.Selection)
{
//o.Move(dx, dy);
o.Move((int)(Math.Round(dx / drawArea.ZoomFactor)), (int)(Math.Round(dy / drawArea.ZoomFactor)));
}
drawArea.Cursor = Cursors.SizeAll;
drawArea.SetDirty();
drawArea.Refresh();
drawArea.GraphicsList.Dirty = true;
}
if (selectMode == SelectionMode.NetSelection)
{
// Remove old selection rectangle
ControlPaint.DrawReversibleFrame(
drawArea.RectangleToScreen(DrawRectangle.GetNormalizedRectangle(startPoint, oldPoint)),
Color.Black,
FrameStyle.Dashed);
// Draw new selection rectangle
ControlPaint.DrawReversibleFrame(
drawArea.RectangleToScreen(DrawRectangle.GetNormalizedRectangle(startPoint, new Point(e.X, e.Y))),
Color.Black,
FrameStyle.Dashed);
return;
}
}