/// <summary>
/// Mouse move - resize new polygon
/// </summary>
/// <param name="control"></param>
/// <param name="e"></param>
public override void OnMouseMove(MapControl control, MouseEventArgs e)
{
base.OnMouseMove(control, e);
if (e.Button != MouseButtons.Left)
{
return;
}
if (obj == null)
{
return; // precaution
}
Point point = new Point(e.X, e.Y);
int distance = (e.X - lastX) * (e.X - lastX) + (e.Y - lastY) * (e.Y - lastY);
if (distance > minDistance)
{
// Add new point
obj.AddPoint(point);
lastX = e.X;
lastY = e.Y;
}
control.Refresh();
}
/// <summary>
/// Right mouse button is released
/// </summary>
/// <param name="control"></param>
/// <param name="e"></param>
public override void OnMouseUp(MapControl control, MouseEventArgs e)
{
if (selectMode == SelectionMode.NetSelection)
{
// Remove old selection rectangle
ControlPaint.DrawReversibleFrame(
control.RectangleToScreen(DrawRectangle.GetNormalizedRectangle(startPoint, lastPoint)),
Color.Black,
FrameStyle.Dashed);
// Make group selection
control.Objects.SelectInRectangle(
DrawRectangle.GetNormalizedRectangle(startPoint, lastPoint));
}
selectMode = SelectionMode.None;
if (resizedObject != null)
{
// after resizing
resizedObject.Normalize();
resizedObject = null;
}
control.Refresh();
if (commandChangeState != null && wasMove)
{
// Keep state after moving/resizing and add command to history
commandChangeState.NewState(control.Objects);
control.AddCommandToHistory(commandChangeState);
commandChangeState = null;
}
}
/// <summary>
/// Left mouse is released.
/// New object is created and resized.
/// </summary>
/// <param name="control"></param>
/// <param name="e"></param>
public override void OnMouseUp(MapControl control, MouseEventArgs e)
{
control.Objects[0].Normalize();
control.AddCommandToHistory(new CommandAdd(control.Objects[0]));
control.ActiveTool = TOOL_TYPE.pointer;
control.Refresh();
}
/// <summary>
/// Left mouse button is pressed
/// </summary>
/// <param name="control"></param>
/// <param name="e"></param>
public override void OnMouseDown(MapControl control, MouseEventArgs e, int zoom)
{
commandChangeState = null;
wasMove = false;
selectMode = SelectionMode.None;
Point point = new Point(e.X, e.Y);
// Test for resizing (only if control is selected, cursor is on the handle)
foreach (DrawObject o in control.Objects.Selection)
{
int handleNumber = o.HitTest(point);
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
control.Objects.UnselectAll();
o.Selected = true;
commandChangeState = new CommandChangeState(control.Objects);
break;
}
}
// Test for move (cursor is on the object)
if (selectMode == SelectionMode.None)
{
int n1 = control.Objects.Count;
DrawObject o = null;
for (int i = 0; i < n1; i++)
{
if (control.Objects[i].HitTest(point) == 0)
{
o = control.Objects[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)
{
control.Objects.UnselectAll();
}
// Select clicked object
o.Selected = true;
commandChangeState = new CommandChangeState(control.Objects);
control.Cursor = Cursors.Hand;
}
}
// Net selection
if (selectMode == SelectionMode.None)
{
// click on background
if ((Control.ModifierKeys & Keys.Control) == 0)
{
control.Objects.UnselectAll();
}
selectMode = SelectionMode.NetSelection;
control.Selected = true;
}
lastPoint.X = e.X;
lastPoint.Y = e.Y;
startPoint.X = e.X;
startPoint.Y = e.Y;
control.Refresh();
if (selectMode == SelectionMode.NetSelection)
{
// Draw selection rectangle in initial position
ControlPaint.DrawReversibleFrame(
control.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="control"></param>
/// <param name="e"></param>
public override void OnMouseMove(MapControl control, MouseEventArgs e)
{
Point point = new Point(e.X, e.Y);
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 < control.Objects.Count; i++)
{
int n = control.Objects[i].HitTest(point);
if (n > 0)
{
cursor = control.Objects[i].GetHandleCursor(n);
break;
}
else if (n == 0)
{
cursor = Cursors.Hand;
break;
}
}
if (cursor == null)
{
cursor = Cursors.Default;
}
control.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(point, resizedObjectHandle);
control.Refresh();
control.SetDirty();
}
}
// move
if (selectMode == SelectionMode.Move)
{
foreach (DrawObject o in control.Objects.Selection)
{
o.Move(dx, dy);
}
control.Cursor = Cursors.Hand;
control.Refresh();
control.SetDirty();
}
if (selectMode == SelectionMode.NetSelection)
{
// Remove old selection rectangle
ControlPaint.DrawReversibleFrame(
control.RectangleToScreen(DrawRectangle.GetNormalizedRectangle(startPoint, oldPoint)),
Color.Black,
FrameStyle.Dashed);
// Draw new selection rectangle
ControlPaint.DrawReversibleFrame(
control.RectangleToScreen(DrawRectangle.GetNormalizedRectangle(startPoint, point)),
Color.Black,
FrameStyle.Dashed);
return;
}
}