public virtual bool OnMouseClickEx(MouseEventArgsEx e)
{
if (this.MouseClickEx != null)
{
this.MouseClickEx(this, e);
}
return(false);
}
private void Form360_MouseMoveEx(object sender, MouseEventArgsEx e)
{
if (this.isResizing)
{
MouseResize(e);
}
else
{
ShowResizeMouseCursor(e);
}
}
private void Form360_MouseDownEx(object sender, MouseEventArgsEx e)
{
if (!this.isMouseInResizeArea)
{
return;
}
this.isResizing = true;
this.resizeOriginWidth = this.Width;
this.resizeOriginHeight = this.Height;
this.resizeMouseOriginX = e.ScreenX;
this.resizeMouseOriginY = e.ScreenY;
this.resizeOriginTop = this.Location.Y;
this.resizeOriginLeft = this.Location.X;
}
private bool RaiseMouseEvent(ref Message m, int x, int y, Control c)
{
FormEx form = c as FormEx;
ControlEx ctrl = c as ControlEx;
if (form == null && ctrl == null)
{
return(false);
}
MouseEventArgsEx e;
bool r = false;
switch (m.Msg)
{
case Win32.WM_MOUSEMOVE:
{
e = new MouseEventArgsEx(MouseButtons.None, x, y);
// 这里是 实现 MouseEnter 事件 。 Windows 消息 中没有 MouseEnter 消息， 所以需要自己实现
// .Net WinForm 也是自己实现的， 不过 .Net WinForm 实现的方式是调用一些 Native 方法
// 比如 RegisterWindowMessage() TrackMouseEvent()
// 这对于我们太复杂，我们只需要用 MouseMove 消息 和 MouseEventUtil 配合 就可以实现 Enter 事件
if (MouseEventUtil.SetEnter(c))
{
if (form != null)
{
r = form.OnMouseEnterEx(new EventArgs());
}
else if (ctrl != null)
{
r = ctrl.OnMouseEnterEx(new EventArgs());
}
}
// 如果 r == true ， 则返回 true 终止事件冒泡
if (r)
{
return(true);
}
if (form != null)
{
r = form.OnMouseMoveEx(e);
}
else if (ctrl != null)
{
r = ctrl.OnMouseMoveEx(e);
}
// 如果 r == true ， 则返回 true 终止事件冒泡
if (r)
{
return(true);
}
break;
}
case Win32.WM_LBUTTONDOWN:
{
// 实现 Click 事件，参考 MouseUp 消息处理部分
MouseEventUtil.SetClickDown(c);
e = new MouseEventArgsEx(MouseButtons.Left, x, y);
if (form != null)
{
r = form.OnMouseDownEx(e);
}
else if (ctrl != null)
{
r = ctrl.OnMouseDownEx(e);
}
// 如果 r == true ， 则返回 true 终止事件冒泡
if (r)
{
return(true);
}
break;
}
case Win32.WM_LBUTTONUP:
{
e = new MouseEventArgsEx(MouseButtons.Left, x, y);
// 这里是 实现 Click 事件 。 Windows 消息 中没有 MouseClick 消息 ， 所以需要自己实现
// .Net WinForm 也是自己实现的。
if (MouseEventUtil.CheckClick(c, x, y))
{
MouseEventUtil.SetClickUp(c);
if (form != null)
{
r = form.OnMouseClickEx(e);
}
else if (ctrl != null)
{
r = ctrl.OnMouseClickEx(e);
}
}
// 如果 r == true ， 则返回 true 终止事件冒泡
if (r)
{
return(true);
}
if (form != null)
{
r = form.OnMouseUpEx(e);
}
else if (ctrl != null)
{
r = ctrl.OnMouseUpEx(e);
}
// 如果 r == true ， 则返回 true 终止事件冒泡
if (r)
{
return(true);
}
break;
}
}
return(false);
}
private void Form360_MouseUpEx(object sender, MouseEventArgsEx e)
{
this.isResizing = false;
}
private void MouseResize(MouseEventArgsEx e)
{
int oX;
int oY;
Point p = new Point(e.ScreenX, e.ScreenY);
if (this.resizePosition == ResizePosition.RightBottom)
{
oX = p.X - this.resizeMouseOriginX;
oY = p.Y - this.resizeMouseOriginY;
this.Width = this.resizeOriginWidth + oX;
this.Height = this.resizeOriginHeight + oY;
}
else if (this.resizePosition == ResizePosition.LeftTop)
{
oX = p.X - this.resizeMouseOriginX;
oY = p.Y - this.resizeMouseOriginY;
this.Width = this.resizeOriginWidth - oX;
this.Height = this.resizeOriginHeight - oY;
this.Left = this.resizeOriginLeft + oX;
this.Top = this.resizeOriginTop + oY;
}
else if (this.resizePosition == ResizePosition.LeftBottom)
{
oX = p.X - this.resizeMouseOriginX;
oY = p.Y - this.resizeMouseOriginY;
this.Width = this.resizeOriginWidth - oX;
this.Height = this.resizeOriginHeight + oY;
this.Left = this.resizeOriginLeft + oX;
}
else if (this.resizePosition == ResizePosition.RightTop)
{
oX = p.X - this.resizeMouseOriginX;
oY = p.Y - this.resizeMouseOriginY;
this.Width = this.resizeOriginWidth + oX;
this.Height = this.resizeOriginHeight - oY;
this.Top = this.resizeOriginTop + oY;
}
else if (this.resizePosition == ResizePosition.Bottom)
{
oY = p.Y - this.resizeMouseOriginY;
this.Height = this.resizeOriginHeight + oY;
}
else if (this.resizePosition == ResizePosition.Top)
{
oY = p.Y - this.resizeMouseOriginY;
this.Height = this.resizeOriginHeight - oY;
this.Top = this.resizeOriginTop + oY;
}
else if (this.resizePosition == ResizePosition.Right)
{
oX = p.X - this.resizeMouseOriginX;
this.Width = this.resizeOriginWidth + oX;
}
else if (this.resizePosition == ResizePosition.Left)
{
oX = p.X - this.resizeMouseOriginX;
this.Width = this.resizeOriginWidth - oX;
this.Left = this.resizeOriginLeft + oX;
}
}
private void ShowResizeMouseCursor(MouseEventArgsEx e)
{
Point p = PointToClient(new Point(e.ScreenX, e.ScreenY));
int w = this.Content.Width;
int h = this.Content.Height;
int x = this.Content.Left;
int y = this.Content.Top;
int offset = this.resizeCornerOffset;
// x1 y1 x2 y2 x3 y3 x4 y4 的 1 2 3 4 的 顺序 是 左上角 左下角 右下角 右上角
int x1 = x - offset;
int y1 = y - offset;
int x2 = x - offset;
int y2 = y + h - 1 + offset;
int x3 = x + w - 1 + offset;
int y3 = y + h - 1 + offset;
int x4 = x + w - 1 + offset;
int y4 = y - offset;
int c = this.resizeCornerSize;
if (p.X >= x3 - c && p.X <= x3 && p.Y >= y3 - c && p.Y <= y3)
{
this.Cursor = Cursors.SizeNWSE;
this.isMouseInResizeArea = true;
this.resizePosition = ResizePosition.RightBottom;
}
else if (p.X >= x1 && p.X <= x1 + c && p.Y >= y1 && p.Y <= y1 + c)
{
this.Cursor = Cursors.SizeNWSE;
this.isMouseInResizeArea = true;
this.resizePosition = ResizePosition.LeftTop;
}
else if (p.X >= x2 && p.X <= x2 + c && p.Y >= y2 - c && p.Y <= y2)
{
this.Cursor = Cursors.SizeNESW;
this.isMouseInResizeArea = true;
this.resizePosition = ResizePosition.LeftBottom;
}
else if (p.X >= x4 - c && p.X <= x4 && p.Y >= y4 && p.Y <= y4 + c)
{
this.Cursor = Cursors.SizeNESW;
this.isMouseInResizeArea = true;
this.resizePosition = ResizePosition.RightTop;
}
else if (p.X >= x2 && p.X <= x3 && p.Y >= y2 - c && p.Y <= y2)
{
this.Cursor = Cursors.SizeNS;
this.isMouseInResizeArea = true;
this.resizePosition = ResizePosition.Bottom;
}
else if (p.X >= x1 && p.X <= x4 && p.Y >= y1 && p.Y <= y1 + c)
{
this.Cursor = Cursors.SizeNS;
this.isMouseInResizeArea = true;
this.resizePosition = ResizePosition.Top;
}
else if (p.X >= x1 && p.X <= x1 + c && p.Y >= y1 && p.Y <= y2)
{
this.Cursor = Cursors.SizeWE;
this.isMouseInResizeArea = true;
this.resizePosition = ResizePosition.Left;
}
else if (p.X >= x4 - c && p.X <= x4 && p.Y >= y4 && p.Y <= y3)
{
this.Cursor = Cursors.SizeWE;
this.isMouseInResizeArea = true;
this.resizePosition = ResizePosition.Right;
}
else
{
if (this.isMouseInResizeArea)
{
this.Cursor = Cursors.Default;
this.isMouseInResizeArea = false;
}
}
}
