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ImageBox

1 个父辈 fe860d03
内嵌 并排
正在显示 3 个修改的文件 包含 767 行增加 和 767 行删除
AccAOI/imageBoxEx/ImageBoxEx.cs
using Cyotek.Windows.Forms;
using System;
using System.ComponentModel;
using System.Drawing;
using System.Windows.Forms;
namespace AccAOI
{
// Cyotek ImageBox
// Copyright (c) 2010-2014 Cyotek.
// http://cyotek.com
// http://cyotek.com/blog/tag/imagebox
// Licensed under the MIT License. See imagebox-license.txt for the full text.
// If you use this control in your applications, attribution, donations or contributions are welcome.
internal class ImageBoxEx : ImageBox
{
#region Instance Fields
private readonly DragHandleCollection _dragHandles;
private int _dragHandleSize;
private Size _minimumSelectionSize;
#endregion
#region Public Constructors
public ImageBoxEx()
{
_dragHandles = new DragHandleCollection();
this.DragHandleSize = 9;
this.MinimumSelectionSize = Size.Empty;
this.PositionDragHandles();
}
#endregion
#region Events
/// <summary>
/// Occurs when the DragHandleSize property value changes
/// </summary>
[Category("Property Changed")]
public event EventHandler DragHandleSizeChanged;
/// <summary>
/// Occurs when the MinimumSelectionSize property value changes
/// </summary>
[Category("Property Changed")]
public event EventHandler MinimumSelectionSizeChanged;
[Category("Action")]
public event EventHandler SelectionMoved;
[Category("Action")]
public event CancelEventHandler SelectionMoving;
[Category("Action")]
public event EventHandler SelectionResized;
[Category("Action")]
public event CancelEventHandler SelectionResizing;
#endregion
#region Overridden Methods
/// <summary>
/// Raises the <see cref="System.Windows.Forms.Control.MouseDown" /> event.
/// </summary>
/// <param name="e">
/// A <see cref="T:System.Windows.Forms.MouseEventArgs" /> that contains the event data.
/// </param>
protected override void OnMouseDown(MouseEventArgs e)
{
Point imagePoint;
imagePoint = this.PointToImage(e.Location);
if (e.Button == MouseButtons.Left && (this.SelectionRegion.Contains(imagePoint) || this.HitTest(e.Location) != DragHandleAnchor.None))
{
this.DragOrigin = e.Location;
this.DragOriginOffset = new Point(imagePoint.X - (int)this.SelectionRegion.X, imagePoint.Y - (int)this.SelectionRegion.Y);
}
else
{
this.DragOriginOffset = Point.Empty;
this.DragOrigin = Point.Empty;
}
base.OnMouseDown(e);
}
/// <summary>
/// Raises the <see cref="System.Windows.Forms.Control.MouseMove" /> event.
/// </summary>
/// <param name="e">
/// A <see cref="T:System.Windows.Forms.MouseEventArgs" /> that contains the event data.
/// </param>
protected override void OnMouseMove(MouseEventArgs e)
{
// start either a move or a resize operation
if (!this.IsSelecting && !this.IsMoving && !this.IsResizing && e.Button == MouseButtons.Left && !this.DragOrigin.IsEmpty && this.IsOutsideDragZone(e.Location))
{
DragHandleAnchor anchor;
//using Cyotek.Windows.Forms;
//using System;
//using System.ComponentModel;
//using System.Drawing;
//using System.Windows.Forms;
//namespace AccAOI
//{
// // Cyotek ImageBox
// // Copyright (c) 2010-2014 Cyotek.
// // http://cyotek.com
// // http://cyotek.com/blog/tag/imagebox
// // Licensed under the MIT License. See imagebox-license.txt for the full text.
// // If you use this control in your applications, attribution, donations or contributions are welcome.
// internal class ImageBoxEx : ImageBox
// {
// #region Instance Fields
// private readonly DragHandleCollection _dragHandles;
// private int _dragHandleSize;
// private Size _minimumSelectionSize;
// #endregion
// #region Public Constructors
// public ImageBoxEx()
// {
// _dragHandles = new DragHandleCollection();
// this.DragHandleSize = 9;
// this.MinimumSelectionSize = Size.Empty;
// this.PositionDragHandles();
// }
// #endregion
// #region Events
// /// <summary>
// /// Occurs when the DragHandleSize property value changes
// /// </summary>
// [Category("Property Changed")]
// public event EventHandler DragHandleSizeChanged;
// /// <summary>
// /// Occurs when the MinimumSelectionSize property value changes
// /// </summary>
// [Category("Property Changed")]
// public event EventHandler MinimumSelectionSizeChanged;
// [Category("Action")]
// public event EventHandler SelectionMoved;
// [Category("Action")]
// public event CancelEventHandler SelectionMoving;
// [Category("Action")]
// public event EventHandler SelectionResized;
// [Category("Action")]
// public event CancelEventHandler SelectionResizing;
// #endregion
// #region Overridden Methods
// /// <summary>
// /// Raises the <see cref="System.Windows.Forms.Control.MouseDown" /> event.
// /// </summary>
// /// <param name="e">
// /// A <see cref="T:System.Windows.Forms.MouseEventArgs" /> that contains the event data.
// /// </param>
// protected override void OnMouseDown(MouseEventArgs e)
// {
// Point imagePoint;
// imagePoint = this.PointToImage(e.Location);
// //if (e.Button == MouseButtons.Left && (this.SelectionRegion.Contains(imagePoint) || this.HitTest(e.Location) != DragHandleAnchor.None))
// //{
// // this.DragOrigin = e.Location;
// // this.DragOriginOffset = new Point(imagePoint.X - (int)this.SelectionRegion.X, imagePoint.Y - (int)this.SelectionRegion.Y);
// //}
// //else
// //{
// // this.DragOriginOffset = Point.Empty;
// // this.DragOrigin = Point.Empty;
// //}
// base.OnMouseDown(e);
// }
// /// <summary>
// /// Raises the <see cref="System.Windows.Forms.Control.MouseMove" /> event.
// /// </summary>
// /// <param name="e">
// /// A <see cref="T:System.Windows.Forms.MouseEventArgs" /> that contains the event data.
// /// </param>
// protected override void OnMouseMove(MouseEventArgs e)
// {
// // start either a move or a resize operation
// if (!this.IsSelecting && !this.IsMoving && !this.IsResizing && e.Button == MouseButtons.Left && !this.DragOrigin.IsEmpty && this.IsOutsideDragZone(e.Location))
// {
// DragHandleAnchor anchor;
anchor = this.HitTest(this.DragOrigin);
// anchor = this.HitTest(this.DragOrigin);
if (anchor == DragHandleAnchor.None)
{
// move
this.StartMove();
}
else if (this.DragHandles[anchor].Enabled && this.DragHandles[anchor].Visible)
{
// resize
this.StartResize(anchor);
}
}
// set the cursor
this.SetCursor(e.Location);
// perform operations
this.ProcessSelectionMove(e.Location);
this.ProcessSelectionResize(e.Location);
base.OnMouseMove(e);
}
/// <summary>
/// Raises the <see cref="System.Windows.Forms.Control.MouseUp" /> event.
/// </summary>
/// <param name="e">
/// A <see cref="T:System.Windows.Forms.MouseEventArgs" /> that contains the event data.
/// </param>
protected override void OnMouseUp(MouseEventArgs e)
{
if (this.IsMoving)
{
this.CompleteMove();
}
else if (this.IsResizing)
{
this.CompleteResize();
}
base.OnMouseUp(e);
}
/// <summary>
/// Raises the <see cref="System.Windows.Forms.Control.Paint" /> event.
/// </summary>
/// <param name="e">
/// A <see cref="T:System.Windows.Forms.PaintEventArgs" /> that contains the event data.
/// </param>
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
if (this.AllowPainting && !this.SelectionRegion.IsEmpty)
{
foreach (DragHandle handle in this.DragHandles)
{
if (handle.Visible)
{
this.DrawDragHandle(e.Graphics, handle);
}
}
}
}
/// <summary>
/// Raises the <see cref="System.Windows.Forms.Control.Resize" /> event.
/// </summary>
/// <param name="e">
/// An <see cref="T:System.EventArgs" /> that contains the event data.
/// </param>
protected override void OnResize(EventArgs e)
{
base.OnResize(e);
this.PositionDragHandles();
}
/// <summary>
/// Raises the <see cref="System.Windows.Forms.ScrollableControl.Scroll" /> event.
/// </summary>
/// <param name="se">
/// A <see cref="T:System.Windows.Forms.ScrollEventArgs" /> that contains the event data.
/// </param>
protected override void OnScroll(ScrollEventArgs se)
{
base.OnScroll(se);
this.PositionDragHandles();
}
/// <summary>
/// Raises the <see cref="ImageBox.Selecting" /> event.
/// </summary>
/// <param name="e">
/// The <see cref="System.EventArgs" /> instance containing the event data.
/// </param>
protected override void OnSelecting(ImageBoxCancelEventArgs e)
{
e.Cancel = this.IsMoving || this.IsResizing || this.SelectionRegion.Contains(this.PointToImage(e.Location)) || this.HitTest(e.Location) != DragHandleAnchor.None;
base.OnSelecting(e);
}
/// <summary>
/// Raises the <see cref="ImageBox.SelectionRegionChanged" /> event.
/// </summary>
/// <param name="e">
/// The <see cref="System.EventArgs" /> instance containing the event data.
/// </param>
protected override void OnSelectionRegionChanged(EventArgs e)
{
base.OnSelectionRegionChanged(e);
this.PositionDragHandles();
}
/// <summary>
/// Raises the <see cref="ImageBox.ZoomChanged" /> event.
/// </summary>
/// <param name="e">
/// The <see cref="System.EventArgs" /> instance containing the event data.
/// </param>
protected override void OnZoomChanged(EventArgs e)
{
base.OnZoomChanged(e);
this.PositionDragHandles();
}
/// <summary>
/// Processes a dialog key.
/// </summary>
/// <returns>
/// true if the key was processed by the control; otherwise, false.
/// </returns>
/// <param name="keyData">One of the <see cref="T:System.Windows.Forms.Keys"/> values that represents the key to process. </param>
protected override bool ProcessDialogKey(Keys keyData)
{
bool result;
if (keyData == Keys.Escape && (this.IsResizing || this.IsMoving))
{
if (this.IsResizing)
{
this.CancelResize();
}
else
{
this.CancelMove();
}
result = true;
}
else
{
result = base.ProcessDialogKey(keyData);
}
return result;
}
#endregion
#region Public Properties
[Category("Appearance")]
[DefaultValue(8)]
public virtual int DragHandleSize
{
get { return _dragHandleSize; }
set
{
if (this.DragHandleSize != value)
{
_dragHandleSize = value;
this.OnDragHandleSizeChanged(EventArgs.Empty);
}
}
}
[Browsable(false)]
public DragHandleCollection DragHandles
{
get { return _dragHandles; }
}
[Browsable(false)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
public bool IsMoving { get; protected set; }
[Browsable(false)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
public bool IsResizing { get; protected set; }
[Category("Behavior")]
[DefaultValue(typeof(Size), "0, 0")]
public virtual Size MinimumSelectionSize
{
get { return _minimumSelectionSize; }
set
{
if (this.MinimumSelectionSize != value)
{
_minimumSelectionSize = value;
this.OnMinimumSelectionSizeChanged(EventArgs.Empty);
}
}
}
[Browsable(false)]
public RectangleF PreviousSelectionRegion { get; protected set; }
#endregion
#region Protected Properties
protected Point DragOrigin { get; set; }
protected Point DragOriginOffset { get; set; }
protected DragHandleAnchor ResizeAnchor { get; set; }
#endregion
#region Public Members
public void CancelResize()
{
this.SelectionRegion = this.PreviousSelectionRegion;
this.CompleteResize();
}
public void StartMove()
{
CancelEventArgs e;
if (this.IsMoving || this.IsResizing)
{
throw new InvalidOperationException("A move or resize action is currently being performed.");
}
e = new CancelEventArgs();
this.OnSelectionMoving(e);
if (!e.Cancel)
{
this.PreviousSelectionRegion = this.SelectionRegion;
this.IsMoving = true;
}
}
#endregion
#region Protected Members
protected virtual void DrawDragHandle(Graphics graphics, DragHandle handle)
{
int left;
int top;
int width;
int height;
Pen outerPen;
Brush innerBrush;
left = handle.Bounds.Left;
top = handle.Bounds.Top;
width = handle.Bounds.Width;
height = handle.Bounds.Height;
if (handle.Enabled)
{
outerPen = SystemPens.WindowFrame;
innerBrush = SystemBrushes.Window;
}
else
{
outerPen = SystemPens.ControlDark;
innerBrush = SystemBrushes.Control;
}
graphics.FillRectangle(innerBrush, left + 1, top + 1, width - 2, height - 2);
graphics.DrawLine(outerPen, left + 1, top, left + width - 2, top);
graphics.DrawLine(outerPen, left, top + 1, left, top + height - 2);
graphics.DrawLine(outerPen, left + 1, top + height - 1, left + width - 2, top + height - 1);
graphics.DrawLine(outerPen, left + width - 1, top + 1, left + width - 1, top + height - 2);
}
/// <summary>
/// Raises the <see cref="DragHandleSizeChanged" /> event.
/// </summary>
/// <param name="e">The <see cref="EventArgs" /> instance containing the event data.</param>
protected virtual void OnDragHandleSizeChanged(EventArgs e)
{
EventHandler handler;
this.PositionDragHandles();
this.Invalidate();
handler = this.DragHandleSizeChanged;
if (handler != null)
{
handler(this, e);
}
}
/// <summary>
/// Raises the <see cref="MinimumSelectionSizeChanged" /> event.
/// </summary>
/// <param name="e">The <see cref="EventArgs" /> instance containing the event data.</param>
protected virtual void OnMinimumSelectionSizeChanged(EventArgs e)
{
EventHandler handler;
handler = this.MinimumSelectionSizeChanged;
if (handler != null)
{
handler(this, e);
}
}
/// <summary>
/// Raises the <see cref="SelectionMoved" /> event.
/// </summary>
/// <param name="e">The <see cref="EventArgs" /> instance containing the event data.</param>
protected virtual void OnSelectionMoved(EventArgs e)
{
EventHandler handler;
handler = this.SelectionMoved;
if (handler != null)
{
handler(this, e);
}
}
/// <summary>
/// Raises the <see cref="SelectionMoving" /> event.
/// </summary>
/// <param name="e">The <see cref="EventArgs" /> instance containing the event data.</param>
protected virtual void OnSelectionMoving(CancelEventArgs e)
{
CancelEventHandler handler;
handler = this.SelectionMoving;
if (handler != null)
{
handler(this, e);
}
}
/// <summary>
/// Raises the <see cref="SelectionResized" /> event.
/// </summary>
/// <param name="e">The <see cref="EventArgs" /> instance containing the event data.</param>
protected virtual void OnSelectionResized(EventArgs e)
{
EventHandler handler;
handler = this.SelectionResized;
if (handler != null)
{
handler(this, e);
}
}
/// <summary>
/// Raises the <see cref="SelectionResizing" /> event.
/// </summary>
/// <param name="e">The <see cref="EventArgs" /> instance containing the event data.</param>
protected virtual void OnSelectionResizing(CancelEventArgs e)
{
CancelEventHandler handler;
handler = this.SelectionResizing;
if (handler != null)
{
handler(this, e);
}
}
#endregion
#region Private Members
private void CancelMove()
{
this.SelectionRegion = this.PreviousSelectionRegion;
this.CompleteMove();
}
private void CompleteMove()
{
this.ResetDrag();
this.OnSelectionMoved(EventArgs.Empty);
}
private void CompleteResize()
{
this.ResetDrag();
this.OnSelectionResized(EventArgs.Empty);
}
private DragHandleAnchor HitTest(Point cursorPosition)
{
return this.DragHandles.HitTest(cursorPosition);
}
private bool IsOutsideDragZone(Point location)
{
Rectangle dragZone;
int dragWidth;
int dragHeight;
dragWidth = SystemInformation.DragSize.Width;
dragHeight = SystemInformation.DragSize.Height;
dragZone = new Rectangle(this.DragOrigin.X - (dragWidth / 2), this.DragOrigin.Y - (dragHeight / 2), dragWidth, dragHeight);
return !dragZone.Contains(location);
}
private void PositionDragHandles()
{
if (this.DragHandles != null && this.DragHandleSize > 0)
{
if (this.SelectionRegion.IsEmpty)
{
foreach (DragHandle handle in this.DragHandles)
{
handle.Bounds = Rectangle.Empty;
}
}
else
{
int left;
int top;
int right;
int bottom;
int halfWidth;
int halfHeight;
int halfDragHandleSize;
Rectangle viewport;
int offsetX;
int offsetY;
viewport = this.GetImageViewPort();
offsetX = viewport.Left + this.Padding.Left + this.AutoScrollPosition.X;
offsetY = viewport.Top + this.Padding.Top + this.AutoScrollPosition.Y;
halfDragHandleSize = this.DragHandleSize / 2;
left = Convert.ToInt32((this.SelectionRegion.Left * this.ZoomFactor) + offsetX);
top = Convert.ToInt32((this.SelectionRegion.Top * this.ZoomFactor) + offsetY);
right = left + Convert.ToInt32(this.SelectionRegion.Width * this.ZoomFactor);
bottom = top + Convert.ToInt32(this.SelectionRegion.Height * this.ZoomFactor);
halfWidth = Convert.ToInt32(this.SelectionRegion.Width * this.ZoomFactor) / 2;
halfHeight = Convert.ToInt32(this.SelectionRegion.Height * this.ZoomFactor) / 2;
this.DragHandles[DragHandleAnchor.TopLeft].Bounds = new Rectangle(left - this.DragHandleSize, top - this.DragHandleSize, this.DragHandleSize, this.DragHandleSize);
this.DragHandles[DragHandleAnchor.TopCenter].Bounds = new Rectangle(left + halfWidth - halfDragHandleSize, top - this.DragHandleSize, this.DragHandleSize, this.DragHandleSize);
this.DragHandles[DragHandleAnchor.TopRight].Bounds = new Rectangle(right, top - this.DragHandleSize, this.DragHandleSize, this.DragHandleSize);
this.DragHandles[DragHandleAnchor.MiddleLeft].Bounds = new Rectangle(left - this.DragHandleSize, top + halfHeight - halfDragHandleSize, this.DragHandleSize, this.DragHandleSize);
this.DragHandles[DragHandleAnchor.MiddleRight].Bounds = new Rectangle(right, top + halfHeight - halfDragHandleSize, this.DragHandleSize, this.DragHandleSize);
this.DragHandles[DragHandleAnchor.BottomLeft].Bounds = new Rectangle(left - this.DragHandleSize, bottom, this.DragHandleSize, this.DragHandleSize);
this.DragHandles[DragHandleAnchor.BottomCenter].Bounds = new Rectangle(left + halfWidth - halfDragHandleSize, bottom, this.DragHandleSize, this.DragHandleSize);
this.DragHandles[DragHandleAnchor.BottomRight].Bounds = new Rectangle(right, bottom, this.DragHandleSize, this.DragHandleSize);
this.DragHandles[DragHandleAnchor.MiddleCenter].Bounds = new Rectangle(left + halfWidth - halfDragHandleSize, top + halfHeight - halfDragHandleSize, this.DragHandleSize, this.DragHandleSize);
}
}
}
private void ProcessSelectionMove(Point cursorPosition)
{
if (this.IsMoving)
{
int x;
int y;
Point imagePoint;
imagePoint = this.PointToImage(cursorPosition, true);
x = Math.Max(0, imagePoint.X - this.DragOriginOffset.X);
if (x + this.SelectionRegion.Width >= this.ViewSize.Width)
{
x = this.ViewSize.Width - (int)this.SelectionRegion.Width;
}
y = Math.Max(0, imagePoint.Y - this.DragOriginOffset.Y);
if (y + this.SelectionRegion.Height >= this.ViewSize.Height)
{
y = this.ViewSize.Height - (int)this.SelectionRegion.Height;
}
this.SelectionRegion = new RectangleF(x, y, this.SelectionRegion.Width, this.SelectionRegion.Height);
}
}
private void ProcessSelectionResize(Point cursorPosition)
{
if (this.IsResizing)
{
Point imagePosition;
float left;
float top;
float right;
float bottom;
bool resizingTopEdge;
bool resizingBottomEdge;
bool resizingLeftEdge;
bool resizingRightEdge;
imagePosition = this.PointToImage(cursorPosition, true);
// get the current selection
left = this.SelectionRegion.Left;
top = this.SelectionRegion.Top;
right = this.SelectionRegion.Right;
bottom = this.SelectionRegion.Bottom;
// decide which edges we're resizing
resizingTopEdge = this.ResizeAnchor >= DragHandleAnchor.TopLeft && this.ResizeAnchor <= DragHandleAnchor.TopRight;
resizingBottomEdge = this.ResizeAnchor >= DragHandleAnchor.BottomLeft && this.ResizeAnchor <= DragHandleAnchor.BottomRight;
resizingLeftEdge = this.ResizeAnchor == DragHandleAnchor.TopLeft || this.ResizeAnchor == DragHandleAnchor.MiddleLeft || this.ResizeAnchor == DragHandleAnchor.BottomLeft;
resizingRightEdge = this.ResizeAnchor == DragHandleAnchor.TopRight || this.ResizeAnchor == DragHandleAnchor.MiddleRight || this.ResizeAnchor == DragHandleAnchor.BottomRight;
// and resize!
if (resizingTopEdge)
{
top = imagePosition.Y;
if (bottom - top < this.MinimumSelectionSize.Height)
{
top = bottom - this.MinimumSelectionSize.Height;
}
}
else if (resizingBottomEdge)
{
bottom = imagePosition.Y;
if (bottom - top < this.MinimumSelectionSize.Height)
{
bottom = top + this.MinimumSelectionSize.Height;
}
}
if (resizingLeftEdge)
{
left = imagePosition.X;
if (right - left < this.MinimumSelectionSize.Width)
{
left = right - this.MinimumSelectionSize.Width;
}
}
else if (resizingRightEdge)
{
right = imagePosition.X;
if (right - left < this.MinimumSelectionSize.Width)
{
right = left + this.MinimumSelectionSize.Width;
}
}
this.SelectionRegion = new RectangleF(left, top, right - left, bottom - top);
}
}
private void ResetDrag()
{
this.IsResizing = false;
this.IsMoving = false;
this.DragOrigin = Point.Empty;
this.DragOriginOffset = Point.Empty;
}
private void SetCursor(Point point)
{
Cursor cursor;
if (this.IsSelecting)
{
cursor = Cursors.Default;
}
else
{
DragHandleAnchor handleAnchor;
handleAnchor = this.IsResizing ? this.ResizeAnchor : this.HitTest(point);
if (handleAnchor != DragHandleAnchor.None && this.DragHandles[handleAnchor].Enabled)
{
switch (handleAnchor)
{
case DragHandleAnchor.TopLeft:
case DragHandleAnchor.BottomRight:
cursor = Cursors.SizeNWSE;
break;
case DragHandleAnchor.TopCenter:
case DragHandleAnchor.BottomCenter:
cursor = Cursors.SizeNS;
break;
case DragHandleAnchor.TopRight:
case DragHandleAnchor.BottomLeft:
cursor = Cursors.SizeNESW;
break;
case DragHandleAnchor.MiddleLeft:
case DragHandleAnchor.MiddleRight:
cursor = Cursors.SizeWE;
break;
case DragHandleAnchor.MiddleCenter:
cursor = Cursors.Cross;
break;
default:
throw new ArgumentOutOfRangeException();
}
}
else if (this.IsMoving || this.SelectionRegion.Contains(this.PointToImage(point)))
{
cursor = Cursors.SizeAll;
}
else
{
cursor = Cursors.Default;
}
}
this.Cursor = cursor;
}
private void StartResize(DragHandleAnchor anchor)
{
CancelEventArgs e;
if (this.IsMoving || this.IsResizing)
{
throw new InvalidOperationException("A move or resize action is currently being performed.");
}
e = new CancelEventArgs();
this.OnSelectionResizing(e);
if (!e.Cancel)
{
this.ResizeAnchor = anchor;
this.PreviousSelectionRegion = this.SelectionRegion;
this.IsResizing = true;
}
}
#endregion
}
}
// if (anchor == DragHandleAnchor.None)
// {
// // move
// this.StartMove();
// }
// else if (this.DragHandles[anchor].Enabled && this.DragHandles[anchor].Visible)
// {
// // resize
// this.StartResize(anchor);
// }
// }
// // set the cursor
// this.SetCursor(e.Location);
// // perform operations
// this.ProcessSelectionMove(e.Location);
// this.ProcessSelectionResize(e.Location);
// base.OnMouseMove(e);
// }
// /// <summary>
// /// Raises the <see cref="System.Windows.Forms.Control.MouseUp" /> event.
// /// </summary>
// /// <param name="e">
// /// A <see cref="T:System.Windows.Forms.MouseEventArgs" /> that contains the event data.
// /// </param>
// protected override void OnMouseUp(MouseEventArgs e)
// {
// if (this.IsMoving)
// {
// this.CompleteMove();
// }
// else if (this.IsResizing)
// {
// this.CompleteResize();
// }
// base.OnMouseUp(e);
// }
// /// <summary>
// /// Raises the <see cref="System.Windows.Forms.Control.Paint" /> event.
// /// </summary>
// /// <param name="e">
// /// A <see cref="T:System.Windows.Forms.PaintEventArgs" /> that contains the event data.
// /// </param>
// protected override void OnPaint(PaintEventArgs e)
// {
// base.OnPaint(e);
// if (this.AllowPainting && !this.SelectionRegion.IsEmpty)
// {
// foreach (DragHandle handle in this.DragHandles)
// {
// if (handle.Visible)
// {
// this.DrawDragHandle(e.Graphics, handle);
// }
// }
// }
// }
// /// <summary>
// /// Raises the <see cref="System.Windows.Forms.Control.Resize" /> event.
// /// </summary>
// /// <param name="e">
// /// An <see cref="T:System.EventArgs" /> that contains the event data.
// /// </param>
// protected override void OnResize(EventArgs e)
// {
// base.OnResize(e);
// this.PositionDragHandles();
// }
// /// <summary>
// /// Raises the <see cref="System.Windows.Forms.ScrollableControl.Scroll" /> event.
// /// </summary>
// /// <param name="se">
// /// A <see cref="T:System.Windows.Forms.ScrollEventArgs" /> that contains the event data.
// /// </param>
// protected override void OnScroll(ScrollEventArgs se)
// {
// base.OnScroll(se);
// this.PositionDragHandles();
// }
// /// <summary>
// /// Raises the <see cref="ImageBox.Selecting" /> event.
// /// </summary>
// /// <param name="e">
// /// The <see cref="System.EventArgs" /> instance containing the event data.
// /// </param>
// protected override void OnSelecting(ImageBoxCancelEventArgs e)
// {
// e.Cancel = this.IsMoving || this.IsResizing || this.SelectionRegion.Contains(this.PointToImage(e.Location)) || this.HitTest(e.Location) != DragHandleAnchor.None;
// base.OnSelecting(e);
// }
// /// <summary>
// /// Raises the <see cref="ImageBox.SelectionRegionChanged" /> event.
// /// </summary>
// /// <param name="e">
// /// The <see cref="System.EventArgs" /> instance containing the event data.
// /// </param>
// protected override void OnSelectionRegionChanged(EventArgs e)
// {
// base.OnSelectionRegionChanged(e);
// this.PositionDragHandles();
// }
// /// <summary>
// /// Raises the <see cref="ImageBox.ZoomChanged" /> event.
// /// </summary>
// /// <param name="e">
// /// The <see cref="System.EventArgs" /> instance containing the event data.
// /// </param>
// protected override void OnZoomChanged(EventArgs e)
// {
// base.OnZoomChanged(e);
// this.PositionDragHandles();
// }
// /// <summary>
// /// Processes a dialog key.
// /// </summary>
// /// <returns>
// /// true if the key was processed by the control; otherwise, false.
// /// </returns>
// /// <param name="keyData">One of the <see cref="T:System.Windows.Forms.Keys"/> values that represents the key to process. </param>
// protected override bool ProcessDialogKey(Keys keyData)
// {
// bool result;
// if (keyData == Keys.Escape && (this.IsResizing || this.IsMoving))
// {
// if (this.IsResizing)
// {
// this.CancelResize();
// }
// else
// {
// this.CancelMove();
// }
// result = true;
// }
// else
// {
// result = base.ProcessDialogKey(keyData);
// }
// return result;
// }
// #endregion
// #region Public Properties
// [Category("Appearance")]
// [DefaultValue(8)]
// public virtual int DragHandleSize
// {
// get { return _dragHandleSize; }
// set
// {
// if (this.DragHandleSize != value)
// {
// _dragHandleSize = value;
// this.OnDragHandleSizeChanged(EventArgs.Empty);
// }
// }
// }
// [Browsable(false)]
// public DragHandleCollection DragHandles
// {
// get { return _dragHandles; }
// }
// [Browsable(false)]
// [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
// public bool IsMoving { get; protected set; }
// [Browsable(false)]
// [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
// public bool IsResizing { get; protected set; }
// [Category("Behavior")]
// [DefaultValue(typeof(Size), "0, 0")]
// public virtual Size MinimumSelectionSize
// {
// get { return _minimumSelectionSize; }
// set
// {
// if (this.MinimumSelectionSize != value)
// {
// _minimumSelectionSize = value;
// this.OnMinimumSelectionSizeChanged(EventArgs.Empty);
// }
// }
// }
// [Browsable(false)]
// public RectangleF PreviousSelectionRegion { get; protected set; }
// #endregion
// #region Protected Properties
// protected Point DragOrigin { get; set; }
// protected Point DragOriginOffset { get; set; }
// protected DragHandleAnchor ResizeAnchor { get; set; }
// #endregion
// #region Public Members
// public void CancelResize()
// {
// this.SelectionRegion = this.PreviousSelectionRegion;
// this.CompleteResize();
// }
// public void StartMove()
// {
// CancelEventArgs e;
// if (this.IsMoving || this.IsResizing)
// {
// throw new InvalidOperationException("A move or resize action is currently being performed.");
// }
// e = new CancelEventArgs();
// this.OnSelectionMoving(e);
// if (!e.Cancel)
// {
// this.PreviousSelectionRegion = this.SelectionRegion;
// this.IsMoving = true;
// }
// }
// #endregion
// #region Protected Members
// protected virtual void DrawDragHandle(Graphics graphics, DragHandle handle)
// {
// int left;
// int top;
// int width;
// int height;
// Pen outerPen;
// Brush innerBrush;
// left = handle.Bounds.Left;
// top = handle.Bounds.Top;
// width = handle.Bounds.Width;
// height = handle.Bounds.Height;
// if (handle.Enabled)
// {
// outerPen = SystemPens.WindowFrame;
// innerBrush = SystemBrushes.Window;
// }
// else
// {
// outerPen = SystemPens.ControlDark;
// innerBrush = SystemBrushes.Control;
// }
// graphics.FillRectangle(innerBrush, left + 1, top + 1, width - 2, height - 2);
// graphics.DrawLine(outerPen, left + 1, top, left + width - 2, top);
// graphics.DrawLine(outerPen, left, top + 1, left, top + height - 2);
// graphics.DrawLine(outerPen, left + 1, top + height - 1, left + width - 2, top + height - 1);
// graphics.DrawLine(outerPen, left + width - 1, top + 1, left + width - 1, top + height - 2);
// }
// /// <summary>
// /// Raises the <see cref="DragHandleSizeChanged" /> event.
// /// </summary>
// /// <param name="e">The <see cref="EventArgs" /> instance containing the event data.</param>
// protected virtual void OnDragHandleSizeChanged(EventArgs e)
// {
// EventHandler handler;
// this.PositionDragHandles();
// this.Invalidate();
// handler = this.DragHandleSizeChanged;
// if (handler != null)
// {
// handler(this, e);
// }
// }
// /// <summary>
// /// Raises the <see cref="MinimumSelectionSizeChanged" /> event.
// /// </summary>
// /// <param name="e">The <see cref="EventArgs" /> instance containing the event data.</param>
// protected virtual void OnMinimumSelectionSizeChanged(EventArgs e)
// {
// EventHandler handler;
// handler = this.MinimumSelectionSizeChanged;
// if (handler != null)
// {
// handler(this, e);
// }
// }
// /// <summary>
// /// Raises the <see cref="SelectionMoved" /> event.
// /// </summary>
// /// <param name="e">The <see cref="EventArgs" /> instance containing the event data.</param>
// protected virtual void OnSelectionMoved(EventArgs e)
// {
// EventHandler handler;
// handler = this.SelectionMoved;
// if (handler != null)
// {
// handler(this, e);
// }
// }
// /// <summary>
// /// Raises the <see cref="SelectionMoving" /> event.
// /// </summary>
// /// <param name="e">The <see cref="EventArgs" /> instance containing the event data.</param>
// protected virtual void OnSelectionMoving(CancelEventArgs e)
// {
// CancelEventHandler handler;
// handler = this.SelectionMoving;
// if (handler != null)
// {
// handler(this, e);
// }
// }
// /// <summary>
// /// Raises the <see cref="SelectionResized" /> event.
// /// </summary>
// /// <param name="e">The <see cref="EventArgs" /> instance containing the event data.</param>
// protected virtual void OnSelectionResized(EventArgs e)
// {
// EventHandler handler;
// handler = this.SelectionResized;
// if (handler != null)
// {
// handler(this, e);
// }
// }
// /// <summary>
// /// Raises the <see cref="SelectionResizing" /> event.
// /// </summary>
// /// <param name="e">The <see cref="EventArgs" /> instance containing the event data.</param>
// protected virtual void OnSelectionResizing(CancelEventArgs e)
// {
// CancelEventHandler handler;
// handler = this.SelectionResizing;
// if (handler != null)
// {
// handler(this, e);
// }
// }
// #endregion
// #region Private Members
// private void CancelMove()
// {
// this.SelectionRegion = this.PreviousSelectionRegion;
// this.CompleteMove();
// }
// private void CompleteMove()
// {
// this.ResetDrag();
// this.OnSelectionMoved(EventArgs.Empty);
// }
// private void CompleteResize()
// {
// this.ResetDrag();
// this.OnSelectionResized(EventArgs.Empty);
// }
// private DragHandleAnchor HitTest(Point cursorPosition)
// {
// return this.DragHandles.HitTest(cursorPosition);
// }
// private bool IsOutsideDragZone(Point location)
// {
// Rectangle dragZone;
// int dragWidth;
// int dragHeight;
// dragWidth = SystemInformation.DragSize.Width;
// dragHeight = SystemInformation.DragSize.Height;
// dragZone = new Rectangle(this.DragOrigin.X - (dragWidth / 2), this.DragOrigin.Y - (dragHeight / 2), dragWidth, dragHeight);
// return !dragZone.Contains(location);
// }
// private void PositionDragHandles()
// {
// if (this.DragHandles != null && this.DragHandleSize > 0)
// {
// if (this.SelectionRegion.IsEmpty)
// {
// foreach (DragHandle handle in this.DragHandles)
// {
// handle.Bounds = Rectangle.Empty;
// }
// }
// else
// {
// int left;
// int top;
// int right;
// int bottom;
// int halfWidth;
// int halfHeight;
// int halfDragHandleSize;
// Rectangle viewport;
// int offsetX;
// int offsetY;
// viewport = this.GetImageViewPort();
// offsetX = viewport.Left + this.Padding.Left + this.AutoScrollPosition.X;
// offsetY = viewport.Top + this.Padding.Top + this.AutoScrollPosition.Y;
// halfDragHandleSize = this.DragHandleSize / 2;
// left = Convert.ToInt32((this.SelectionRegion.Left * this.ZoomFactor) + offsetX);
// top = Convert.ToInt32((this.SelectionRegion.Top * this.ZoomFactor) + offsetY);
// right = left + Convert.ToInt32(this.SelectionRegion.Width * this.ZoomFactor);
// bottom = top + Convert.ToInt32(this.SelectionRegion.Height * this.ZoomFactor);
// halfWidth = Convert.ToInt32(this.SelectionRegion.Width * this.ZoomFactor) / 2;
// halfHeight = Convert.ToInt32(this.SelectionRegion.Height * this.ZoomFactor) / 2;
// this.DragHandles[DragHandleAnchor.TopLeft].Bounds = new Rectangle(left - this.DragHandleSize, top - this.DragHandleSize, this.DragHandleSize, this.DragHandleSize);
// this.DragHandles[DragHandleAnchor.TopCenter].Bounds = new Rectangle(left + halfWidth - halfDragHandleSize, top - this.DragHandleSize, this.DragHandleSize, this.DragHandleSize);
// this.DragHandles[DragHandleAnchor.TopRight].Bounds = new Rectangle(right, top - this.DragHandleSize, this.DragHandleSize, this.DragHandleSize);
// this.DragHandles[DragHandleAnchor.MiddleLeft].Bounds = new Rectangle(left - this.DragHandleSize, top + halfHeight - halfDragHandleSize, this.DragHandleSize, this.DragHandleSize);
// this.DragHandles[DragHandleAnchor.MiddleRight].Bounds = new Rectangle(right, top + halfHeight - halfDragHandleSize, this.DragHandleSize, this.DragHandleSize);
// this.DragHandles[DragHandleAnchor.BottomLeft].Bounds = new Rectangle(left - this.DragHandleSize, bottom, this.DragHandleSize, this.DragHandleSize);
// this.DragHandles[DragHandleAnchor.BottomCenter].Bounds = new Rectangle(left + halfWidth - halfDragHandleSize, bottom, this.DragHandleSize, this.DragHandleSize);
// this.DragHandles[DragHandleAnchor.BottomRight].Bounds = new Rectangle(right, bottom, this.DragHandleSize, this.DragHandleSize);
// this.DragHandles[DragHandleAnchor.MiddleCenter].Bounds = new Rectangle(left + halfWidth - halfDragHandleSize, top + halfHeight - halfDragHandleSize, this.DragHandleSize, this.DragHandleSize);
// }
// }
// }
// private void ProcessSelectionMove(Point cursorPosition)
// {
// if (this.IsMoving)
// {
// int x;
// int y;
// Point imagePoint;
// imagePoint = this.PointToImage(cursorPosition, true);
// x = Math.Max(0, imagePoint.X - this.DragOriginOffset.X);
// if (x + this.SelectionRegion.Width >= this.ViewSize.Width)
// {
// x = this.ViewSize.Width - (int)this.SelectionRegion.Width;
// }
// y = Math.Max(0, imagePoint.Y - this.DragOriginOffset.Y);
// if (y + this.SelectionRegion.Height >= this.ViewSize.Height)
// {
// y = this.ViewSize.Height - (int)this.SelectionRegion.Height;
// }
// this.SelectionRegion = new RectangleF(x, y, this.SelectionRegion.Width, this.SelectionRegion.Height);
// }
// }
// private void ProcessSelectionResize(Point cursorPosition)
// {
// if (this.IsResizing)
// {
// Point imagePosition;
// float left;
// float top;
// float right;
// float bottom;
// bool resizingTopEdge;
// bool resizingBottomEdge;
// bool resizingLeftEdge;
// bool resizingRightEdge;
// imagePosition = this.PointToImage(cursorPosition, true);
// // get the current selection
// left = this.SelectionRegion.Left;
// top = this.SelectionRegion.Top;
// right = this.SelectionRegion.Right;
// bottom = this.SelectionRegion.Bottom;
// // decide which edges we're resizing
// resizingTopEdge = this.ResizeAnchor >= DragHandleAnchor.TopLeft && this.ResizeAnchor <= DragHandleAnchor.TopRight;
// resizingBottomEdge = this.ResizeAnchor >= DragHandleAnchor.BottomLeft && this.ResizeAnchor <= DragHandleAnchor.BottomRight;
// resizingLeftEdge = this.ResizeAnchor == DragHandleAnchor.TopLeft || this.ResizeAnchor == DragHandleAnchor.MiddleLeft || this.ResizeAnchor == DragHandleAnchor.BottomLeft;
// resizingRightEdge = this.ResizeAnchor == DragHandleAnchor.TopRight || this.ResizeAnchor == DragHandleAnchor.MiddleRight || this.ResizeAnchor == DragHandleAnchor.BottomRight;
// // and resize!
// if (resizingTopEdge)
// {
// top = imagePosition.Y;
// if (bottom - top < this.MinimumSelectionSize.Height)
// {
// top = bottom - this.MinimumSelectionSize.Height;
// }
// }
// else if (resizingBottomEdge)
// {
// bottom = imagePosition.Y;
// if (bottom - top < this.MinimumSelectionSize.Height)
// {
// bottom = top + this.MinimumSelectionSize.Height;
// }
// }
// if (resizingLeftEdge)
// {
// left = imagePosition.X;
// if (right - left < this.MinimumSelectionSize.Width)
// {
// left = right - this.MinimumSelectionSize.Width;
// }
// }
// else if (resizingRightEdge)
// {
// right = imagePosition.X;
// if (right - left < this.MinimumSelectionSize.Width)
// {
// right = left + this.MinimumSelectionSize.Width;
// }
// }
// this.SelectionRegion = new RectangleF(left, top, right - left, bottom - top);
// }
// }
// private void ResetDrag()
// {
// this.IsResizing = false;
// this.IsMoving = false;
// this.DragOrigin = Point.Empty;
// this.DragOriginOffset = Point.Empty;
// }
// private void SetCursor(Point point)
// {
// Cursor cursor;
// if (this.IsSelecting)
// {
// cursor = Cursors.Default;
// }
// else
// {
// DragHandleAnchor handleAnchor;
// handleAnchor = this.IsResizing ? this.ResizeAnchor : this.HitTest(point);
// if (handleAnchor != DragHandleAnchor.None && this.DragHandles[handleAnchor].Enabled)
// {
// switch (handleAnchor)
// {
// case DragHandleAnchor.TopLeft:
// case DragHandleAnchor.BottomRight:
// cursor = Cursors.SizeNWSE;
// break;
// case DragHandleAnchor.TopCenter:
// case DragHandleAnchor.BottomCenter:
// cursor = Cursors.SizeNS;
// break;
// case DragHandleAnchor.TopRight:
// case DragHandleAnchor.BottomLeft:
// cursor = Cursors.SizeNESW;
// break;
// case DragHandleAnchor.MiddleLeft:
// case DragHandleAnchor.MiddleRight:
// cursor = Cursors.SizeWE;
// break;
// case DragHandleAnchor.MiddleCenter:
// cursor = Cursors.Cross;
// break;
// default:
// throw new ArgumentOutOfRangeException();
// }
// }
// else if (this.IsMoving || this.SelectionRegion.Contains(this.PointToImage(point)))
// {
// cursor = Cursors.SizeAll;
// }
// else
// {
// cursor = Cursors.Default;
// }
// }
// this.Cursor = cursor;
// }
// private void StartResize(DragHandleAnchor anchor)
// {
// CancelEventArgs e;
// if (this.IsMoving || this.IsResizing)
// {
// throw new InvalidOperationException("A move or resize action is currently being performed.");
// }
// e = new CancelEventArgs();
// this.OnSelectionResizing(e);
// if (!e.Cancel)
// {
// this.ResizeAnchor = anchor;
// this.PreviousSelectionRegion = this.SelectionRegion;
// this.IsResizing = true;
// }
// }
// #endregion
// }
//}
ImageBox/ImageBox.cs
此文件的差异太大，无法显示。
ImageBox/ImageBox/ImageBoxSelectionMode.cs
......@@ -27,6 +27,6 @@
/// <summary>
/// Zoom selection.
/// </summary>
Zoom
Eclipse,
}
}
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