public int MoveToNewPosition(double newLeft, double newTop, bool isCheckBorder)
{
if (newLeft <= 0)
{
newLeft = 0;
}
if (newTop <= 0)
{
newTop = 0;
}
int result = 0;
#region 检验并设置边界
if (isCheckBorder)
{
FlowContent parent = ControlsCommon.FindParentControl <FlowContent>(this);
if (parent == null)
{
return(-1);
}
if (newLeft > parent.ActualWidth - this.ActualWidth)
{
newLeft = parent.ActualWidth - this.ActualWidth;
result = 1;
}
if (newTop > parent.ActualHeight - this.ActualHeight)
{
newTop = parent.ActualHeight - this.ActualHeight;
result += 10;
}
}
#endregion
Position = new Point(newLeft, newTop);
if (BelongCanvas != null)
{
BelongCanvas.bSaved = false;
}
return(result);
}
/// <summary>
///
/// </summary>
/// <param name="d"></param>
/// <param name="e"></param>
private static void OnSelectedChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
DragThumb dragThumb = d as DragThumb;
if (dragThumb == null)
{
return;
}
FlowContent parent = ControlsCommon.FindParentControl <FlowContent>(dragThumb);
if (parent == null)
{
return;
}
bool selected = (bool)e.NewValue;
if (!selected) //不选择
{
dragThumb.IsEditText = false;
if (parent.CurSelectedDragThumb != null && parent.CurSelectedDragThumb.Equals(dragThumb))
{
parent.CurSelectedDragThumb = null;
}
parent.SelectDragThumbs.Remove(dragThumb);
return;
}
if (parent.SelectDragThumbs.IndexOf(dragThumb) < 0)
{
parent.SelectDragThumbs.Add(dragThumb);
}
if (!parent.bMultiSelect) // //单选，将其他设置为取消选择
{
#region 将其他的DargImage 取消选择
int childCount = VisualTreeHelper.GetChildrenCount(parent);
for (int i = 0; i < childCount; i++)
{
DependencyObject child = VisualTreeHelper.GetChild(parent, i);
if ((child.GetType() != typeof(DragImage)) &&
(child.GetType() != typeof(DragShape)) &&
(child.GetType() != typeof(DragCircle)) &&
(child.GetType() != typeof(DragVideo)))
{
continue;
}
DragThumb di = child as DragThumb;
if ((di == null) || (di.Equals(d)))
{
continue;
}
di.IsSelected = false;
}
#endregion
parent.CurSelectedDragThumb = dragThumb;
}
parent.Focus(); //设置Focus
}
protected void Resize_DragDelta(ResizeThumb resizeThumb, double horizontalChange, double verticalChange)
{
if (IsReadOnly)
{
return;
}
FlowContent dv = ControlsCommon.FindParentControl <FlowContent>(this);
if (dv == null)
{
return;
}
this.BResizing = true; //设置为Resizing
if (!dv.BCtrl) //不是Ctrl
{
if (Math.Abs(horizontalChange) > 0.0001)
{
horizontalChange = horizontalChange - (horizontalChange % 5);
}
if (Math.Abs(verticalChange) > 0.0001)
{
verticalChange = verticalChange - (verticalChange % 5);
}
}
Point newPosition = new Point(Position.X, Position.Y);
double addWidth = 0;
double addHeight = 0;
const double alignSpan = 10;
double hSpan = alignSpan; //水平增大缩小间隔 - 停靠
double vSpan = alignSpan; //垂直增大缩小间隔 - 停靠
int iAutoResize = 0; //自动大小方向 0 ：无；1：水平；2：垂直
#region Resize
switch (resizeThumb.EmDragDirection)
{
case EmDragDirection.TopLeft: //左上
#region 左上
newPosition.X = Position.X + horizontalChange;
newPosition.Y = Position.Y + verticalChange;
if (newPosition.X <= 0)
{
newPosition.X = 0;
}
else
{
addWidth = horizontalChange * (-1);
}
if (newPosition.Y <= 0)
{
newPosition.Y = 0;
}
else
{
addHeight = verticalChange * (-1);
}
#region 停靠 - 左上
foreach (DragThumb thumb in dv.DragThumbs)
{
if (thumb.Equals(this))
{
continue;
}
double span = 0;
#region 左边停靠
span = Math.Abs(newPosition.X - thumb.Position.X);
if (span <= hSpan) //左边
{
hSpan = span;
newPosition.X = thumb.Position.X;
addWidth = this.Position.X - thumb.Position.X;
iAutoResize = 1;
}
#endregion
#region 等宽
span = Math.Abs(this.Width + addWidth - thumb.Width);
if (span <= hSpan) //宽
{
hSpan = span;
addWidth = thumb.Width - this.Width;
newPosition.X = this.Position.X - addWidth;
iAutoResize = 1;
}
#endregion
#region 顶部停靠
span = Math.Abs(newPosition.Y - thumb.Position.Y);
if (span <= vSpan) //顶部
{
vSpan = span;
newPosition.Y = thumb.Position.Y;
addHeight = this.Position.Y - thumb.Position.Y;
iAutoResize = 2;
}
#endregion
#region 等高
span = Math.Abs(this.Height + addHeight - thumb.Height);
if (span <= vSpan) //高
{
vSpan = span;
addHeight = thumb.Height - this.Height;
newPosition.Y = this.Position.Y - addHeight;
iAutoResize = 2;
}
#endregion
}
#endregion
#region 格式拖动
if (BelongCanvas.bResizeFormat) //格式化
{
if (iAutoResize == 1) //按照水平
{
addHeight = addWidth * this.Height / this.Width;
newPosition.Y = this.Position.Y - addHeight;
}
//else if (iAutoResize == 2)
//{
//}
else
{
addWidth = addHeight * this.Width / this.Height;
newPosition.X = this.Position.X - addWidth;
}
}
#endregion
#endregion
break;
case EmDragDirection.TopCenter: //中上
#region 中上
newPosition.Y = Position.Y + verticalChange;
if (newPosition.Y <= 0)
{
newPosition.Y = 0;
}
else
{
addHeight = verticalChange * (-1);
}
#region 停靠 - 上
foreach (DragThumb thumb in dv.DragThumbs)
{
if (thumb.Equals(this))
{
continue;
}
double span = 0;
#region 顶部停靠
span = Math.Abs(newPosition.Y - thumb.Position.Y);
if (span <= vSpan) //顶部
{
vSpan = span;
newPosition.Y = thumb.Position.Y;
addHeight = this.Position.Y - thumb.Position.Y;
}
#endregion
#region 等高
span = Math.Abs(this.Height + addHeight - thumb.Height);
if (span <= vSpan) //高
{
vSpan = span;
addHeight = thumb.Height - this.Height;
newPosition.Y = this.Position.Y - addHeight;
}
#endregion
}
#endregion
#endregion
break;
case EmDragDirection.TopRight: //右上
#region 右上
newPosition.Y = Position.Y + verticalChange;
addWidth = horizontalChange;
if (newPosition.Y <= 0)
{
newPosition.Y = 0;
}
else
{
addHeight = verticalChange * (-1);
}
if (newPosition.Y > dv.ActualHeight - this.ActualHeight)
{
newPosition.Y = dv.ActualHeight - this.ActualHeight;
}
#region 停靠 - 右上
foreach (DragThumb thumb in dv.DragThumbs)
{
if (thumb.Equals(this))
{
continue;
}
double span = 0;
#region 右边停靠
span = Math.Abs(newPosition.X + this.Width + addWidth - (thumb.Position.X + thumb.Width));
if (span <= hSpan) //右边
{
hSpan = span;
addWidth = thumb.Position.X + thumb.Width - (newPosition.X + this.Width);
iAutoResize = 1;
}
#endregion
#region 等宽
span = Math.Abs(this.Width + addWidth - thumb.Width);
if (span <= hSpan) //宽
{
hSpan = span;
addWidth = thumb.Width - this.Width;
iAutoResize = 1;
}
#endregion
#region 顶部停靠
span = Math.Abs(newPosition.Y - thumb.Position.Y);
if (span <= vSpan) //顶部
{
vSpan = span;
newPosition.Y = thumb.Position.Y;
addHeight = this.Position.Y - thumb.Position.Y;
iAutoResize = 2;
}
#endregion
#region 等高
span = Math.Abs(this.Height + addHeight - thumb.Height);
if (span <= vSpan) //高
{
vSpan = span;
addHeight = thumb.Height - this.Height;
newPosition.Y = this.Position.Y - addHeight;
iAutoResize = 2;
}
#endregion
}
#endregion
#region 格式拖动
if (BelongCanvas.bResizeFormat) //格式化
{
if (iAutoResize == 1) //按照水平
{
addHeight = addWidth * this.Height / this.Width;
newPosition.Y = this.Position.Y - addHeight;
}
//else if (iAutoResize == 2)
//{
//}
else
{
addWidth = addHeight * this.Width / this.Height;
}
}
#endregion
#endregion
break;
case EmDragDirection.MiddleLeft: //中左
#region 中左
newPosition.X = Position.X + horizontalChange;
addWidth = horizontalChange * (-1);
if (newPosition.Y <= 0)
{
newPosition.Y = 0;
}
#region 停靠 左
foreach (DragThumb thumb in dv.DragThumbs)
{
if (thumb.Equals(this))
{
continue;
}
double span = 0;
#region 左边停靠
span = Math.Abs(newPosition.X - thumb.Position.X);
if (span <= hSpan) //左边
{
hSpan = span;
newPosition.X = thumb.Position.X;
addWidth = this.Position.X - thumb.Position.X;
}
#endregion
#region 等宽
span = Math.Abs(this.Width + addWidth - thumb.Width);
if (span <= hSpan) //宽
{
hSpan = span;
addWidth = thumb.Width - this.Width;
newPosition.X = this.Position.X - addWidth;
}
#endregion
}
#endregion
#endregion
break;
case EmDragDirection.MiddleRight: //中右
#region 中右
addWidth = horizontalChange;
#region 停靠 右
foreach (DragThumb thumb in dv.DragThumbs)
{
if (thumb.Equals(this))
{
continue;
}
double span = 0;
#region 右边停靠
span = Math.Abs(newPosition.X + this.Width + addWidth - (thumb.Position.X + thumb.Width));
if (span <= hSpan) //右边
{
hSpan = span;
addWidth = thumb.Position.X + thumb.Width - (newPosition.X + this.Width);
}
#endregion
#region 等宽
span = Math.Abs(this.Width + addWidth - thumb.Width);
if (span <= hSpan) //宽
{
hSpan = span;
addWidth = thumb.Width - this.Width;
}
#endregion
}
#endregion
#endregion
break;
case EmDragDirection.BottomLeft: //下左
#region 左
newPosition.X = Position.X + horizontalChange;
addWidth = horizontalChange * (-1);
addHeight = verticalChange;
if (newPosition.X <= 0)
{
newPosition.X = 0;
}
#region 停靠 下左
foreach (DragThumb thumb in dv.DragThumbs)
{
if (thumb.Equals(this))
{
continue;
}
double span = 0;
#region 左边停靠
span = Math.Abs(newPosition.X - thumb.Position.X);
if (span <= hSpan) //左边
{
hSpan = span;
newPosition.X = thumb.Position.X;
addWidth = this.Position.X - thumb.Position.X;
iAutoResize = 1;
}
#endregion
#region 等宽
span = Math.Abs(this.Width + addWidth - thumb.Width);
if (span <= hSpan) //宽
{
hSpan = span;
addWidth = thumb.Width - this.Width;
newPosition.X = this.Position.X - addWidth;
iAutoResize = 1;
}
#endregion
#region 底部停靠
span = Math.Abs(newPosition.Y + this.Height + addHeight - (thumb.Position.Y + thumb.Height));
if (span <= vSpan) //底部
{
vSpan = span;
addHeight = thumb.Position.Y + thumb.Height - (newPosition.Y + this.Height);
iAutoResize = 2;
}
#endregion
#region 等高
span = Math.Abs(this.Height + addHeight - thumb.Height);
if (span <= vSpan) //高
{
vSpan = span;
addHeight = thumb.Height - this.Height;
iAutoResize = 2;
}
#endregion
}
#endregion
#region 格式拖动
if (BelongCanvas.bResizeFormat) //格式化
{
if (iAutoResize == 1) //按照水平
{
addHeight = addWidth * this.Height / this.Width;
newPosition.X = this.Position.X - addWidth;
}
//else if (iAutoResize == 2)
//{
//}
else
{
addWidth = addHeight * this.Width / this.Height;
}
}
#endregion
#endregion
break;
case EmDragDirection.BottomCenter: //下中
#region 中
addHeight = verticalChange;
#region 停靠 下中
foreach (DragThumb thumb in dv.DragThumbs)
{
if (thumb.Equals(this))
{
continue;
}
double span = 0;
#region 底部停靠
span = Math.Abs(newPosition.Y + this.Height + addHeight - (thumb.Position.Y + thumb.Height));
if (span <= vSpan) //底部
{
vSpan = span;
addHeight = thumb.Position.Y + thumb.Height - (newPosition.Y + this.Height);
}
#endregion
#region 等高
span = Math.Abs(this.Height + addHeight - thumb.Height);
if (span <= vSpan) //高
{
vSpan = span;
addHeight = thumb.Height - this.Height;
}
#endregion
}
#endregion
#endregion
break;
case EmDragDirection.BottomRight: //下右
#region 右
addWidth = horizontalChange;
addHeight = verticalChange;
#region 停靠 下右
foreach (DragThumb thumb in dv.DragThumbs)
{
if (thumb.Equals(this))
{
continue;
}
double span = 0;
#region 右边停靠
span = Math.Abs(newPosition.X + this.Width + addWidth - (thumb.Position.X + thumb.Width));
if (span <= hSpan) //右边
{
hSpan = span;
addWidth = thumb.Position.X + thumb.Width - (newPosition.X + this.Width);
iAutoResize = 1;
}
#endregion
#region 等宽
span = Math.Abs(this.Width + addWidth - thumb.Width);
if (span <= hSpan) //宽
{
hSpan = span;
addWidth = thumb.Width - this.Width;
iAutoResize = 1;
}
#endregion
#region 底部停靠
span = Math.Abs(newPosition.Y + this.Height + addHeight - (thumb.Position.Y + thumb.Height));
if (span <= vSpan) //底部
{
vSpan = span;
addHeight = thumb.Position.Y + thumb.Height - (newPosition.Y + this.Height);
iAutoResize = 2;
}
#endregion
#region 等高
span = Math.Abs(this.Height + addHeight - thumb.Height);
if (span <= vSpan) //高
{
vSpan = span;
addHeight = thumb.Height - this.Height;
iAutoResize = 2;
}
#endregion
}
#endregion
#region 格式拖动
if (BelongCanvas.bResizeFormat) //格式化
{
if (iAutoResize == 1) //按照水平
{
addHeight = addWidth * this.Height / this.Width;
}
//else if (iAutoResize == 2)
//{
//}
else
{
addWidth = addHeight * this.Width / this.Height;
}
}
#endregion
#endregion
break;
}
#endregion
#region 限制最小宽度、高度
if (this.Width + addWidth <= MinWidth)
{
addWidth = MinWidth - this.Width;
}
if (this.Height + addHeight <= MinHeight)
{
addHeight = MinHeight - this.Height;
}
#endregion
this.Width += addWidth;
this.Height += addHeight;
#region 控制区域
if (newPosition.X <= 0)
{
newPosition.X = 0;
}
if (newPosition.Y <= 0)
{
newPosition.Y = 0;
}
if (newPosition.X > dv.ActualWidth)
{
newPosition.X = dv.ActualWidth;
}
if (newPosition.Y > dv.ActualHeight)
{
newPosition.Y = dv.ActualHeight;
}
#endregion
Position = newPosition; //设置位置
#region 绘制 对齐和 等宽高线
dv.ReDrawAlignLines(this,
(resizeThumb.EmDragDirection == EmDragDirection.TopLeft ||
resizeThumb.EmDragDirection == EmDragDirection.TopRight ||
resizeThumb.EmDragDirection == EmDragDirection.TopCenter),
(resizeThumb.EmDragDirection == EmDragDirection.BottomLeft ||
resizeThumb.EmDragDirection == EmDragDirection.BottomRight ||
resizeThumb.EmDragDirection == EmDragDirection.BottomCenter),
false,
(resizeThumb.EmDragDirection == EmDragDirection.TopLeft ||
resizeThumb.EmDragDirection == EmDragDirection.BottomLeft ||
resizeThumb.EmDragDirection == EmDragDirection.MiddleLeft),
(resizeThumb.EmDragDirection == EmDragDirection.TopRight ||
resizeThumb.EmDragDirection == EmDragDirection.BottomRight ||
resizeThumb.EmDragDirection == EmDragDirection.MiddleRight),
false
);
dv.ReDrawWidthHeightLines(this,
(resizeThumb.EmDragDirection == EmDragDirection.TopLeft ||
resizeThumb.EmDragDirection == EmDragDirection.TopRight ||
resizeThumb.EmDragDirection == EmDragDirection.BottomLeft ||
resizeThumb.EmDragDirection == EmDragDirection.BottomRight ||
resizeThumb.EmDragDirection == EmDragDirection.MiddleLeft ||
resizeThumb.EmDragDirection == EmDragDirection.MiddleRight),
(resizeThumb.EmDragDirection == EmDragDirection.TopLeft ||
resizeThumb.EmDragDirection == EmDragDirection.TopRight ||
resizeThumb.EmDragDirection == EmDragDirection.BottomLeft ||
resizeThumb.EmDragDirection == EmDragDirection.BottomRight ||
resizeThumb.EmDragDirection == EmDragDirection.TopCenter ||
resizeThumb.EmDragDirection == EmDragDirection.BottomCenter)
);
#endregion
if (BelongCanvas != null)
{
BelongCanvas.bSaved = false;
}
}
