/// <summary>
/// 更新当前页面对象
/// </summary>
/// <returns>操作是否改变了当前页面对象</returns>
protected bool UpdateCurrentPage()
{
if (myPages != null)
{
MultiPageTransform trans = (MultiPageTransform)this.myTransform;
PrintPage cpage = null;
System.Drawing.Rectangle rect = new System.Drawing.Rectangle(
-this.AutoScrollPosition.X,
-this.AutoScrollPosition.Y,
this.ClientSize.Width,
this.ClientSize.Height);
int MaxHeight = 0;
foreach (PrintPage page in myPages)
{
System.Drawing.Rectangle rect2 = System.Drawing.Rectangle.Intersect(page.ClientBounds, rect);
if (!rect2.IsEmpty)
{
if (MaxHeight < rect2.Height)
{
cpage = page;
MaxHeight = rect2.Height;
}
}
}
if (cpage != myCurrentPage)
{
myCurrentPage = cpage;
}
return(true);
}
return(false);
}
protected override void RefreshScaleTransform()
{
MultiPageTransform trans = (MultiPageTransform)this.myTransform;
intGraphicsUnit = myPages.GraphicsUnit;
trans.Rate = GraphicsUnitConvert.GetRate(intGraphicsUnit, System.Drawing.GraphicsUnit.Pixel);
//float rate = ( float )( 1.0 / this.ClientToViewXRate );
//trans.Pages = myPages ;
//trans.Refresh( rate , this.intPageSpacing );
System.Drawing.Point sp = this.AutoScrollPosition;
trans.ClearSourceOffset();
trans.OffsetSource(sp.X, sp.Y, true);
// myClientMargins = new System.Drawing.Printing.Margins(
// ( int ) ( myPages.LeftMargin * rate ),
// ( int ) ( myPages.RightMargin * rate ) ,
// ( int ) ( myPages.TopMargin * rate ),
// ( int ) ( myPages.BottomMargin * rate ));
//
// myClientPageSize = new System.Drawing.Size(
// ( int) ( myPages.PaperWidth * rate ) ,
// ( int ) ( myPages.PaperHeight * rate ));
}
/// <summary>
/// 根据指定坐标的位置获得选中的坐标
/// </summary>
/// <param name="x"></param>
/// <param name="y"></param>
/// <returns></returns>
protected Point GetSelectAreaPoint(int x, int y)
{
MultiPageTransform trans = (MultiPageTransform)this.myTransform;
if (trans.ContainsSourcePoint(x, y))
{
Point p = this.myTransform.TransformPoint(x, y);
return(p);
}
return(Point.Empty);
}
/// <summary>
/// 根据指定坐标的位置获得续打位置
/// </summary>
/// <param name="x">X坐标值</param>
/// <param name="y">Y坐标值</param>
/// <returns>续打位置</returns>
protected int GetJumpPrintPosition(int x, int y)
{
MultiPageTransform trans = (MultiPageTransform)this.myTransform;
if (trans.ContainsSourcePoint(x, y))
{
int pos = this.myTransform.TransformPoint(x, y).Y;
if (pos >= 0)
{
return(pos);
}
}
return(0);
}
/// <summary>
/// 绘制续打区域
/// </summary>
/// <param name="g">图形绘制对象</param>
/// <param name="ClipRectangle">剪切矩形</param>
/// <param name="Position">续打位置</param>
/// <param name="FillColor">填充色</param>
protected void DrawJumpPrintArea(
System.Drawing.Graphics g,
System.Drawing.Rectangle ClipRectangle,
int Position,
System.Drawing.Color FillColor)
{
MultiPageTransform trans = (MultiPageTransform)this.myTransform;
int pos = trans.UnTransformY(Position);
if (pos >= 0)
{
System.Drawing.Rectangle rect = new System.Drawing.Rectangle(
0,
0,
this.ClientSize.Width,
pos);
System.Drawing.Rectangle rect2 = ClipRectangle;
if (ClipRectangle.IsEmpty)
{
rect2 = rect;
}
else
{
rect2 = System.Drawing.Rectangle.Intersect(rect, rect2);
}
if (!rect2.IsEmpty)
{
g.ResetClip();
g.PageUnit = System.Drawing.GraphicsUnit.Pixel;
g.ResetTransform();
using (System.Drawing.SolidBrush b = new System.Drawing.SolidBrush(FillColor))
{
g.FillRectangle(b, rect2);
}
using (System.Drawing.Pen p =
new System.Drawing.Pen(System.Drawing.Color.Blue, 2))
{
g.DrawLine(
p,
0,
rect.Bottom - 1,
this.ClientSize.Width,
rect.Bottom - 1);
}
}
}
}
/// <summary>
/// 绘制选中区域 Add by wwj 2012-04-17
/// </summary>
/// <param name="g"></param>
/// <param name="clipRectangle"></param>
/// <param name="leftTopPoint"></param>
/// <param name="rightBottomPoint"></param>
/// <param name="FillColor"></param>
protected void DrawSelectAreaPrint(System.Drawing.Graphics g, System.Drawing.Rectangle clipRectangle,
Point leftTopPoint, Point rightBottomPoint, System.Drawing.Color FillColor)
{
MultiPageTransform trans = (MultiPageTransform)this.myTransform;
//由于leftTopPoint代表鼠标按下的Location， rightBottomPoint代表鼠标弹起的location
//所以需要重新调整leftTopPoint与rightBottomPoint的位置
Point tempPoint = leftTopPoint;
if (leftTopPoint.Y > rightBottomPoint.Y)
{
leftTopPoint = rightBottomPoint;
rightBottomPoint = tempPoint;
}
tempPoint = rightBottomPoint;
if (leftTopPoint.X > rightBottomPoint.X)
{
rightBottomPoint.X = leftTopPoint.X;
leftTopPoint.X = tempPoint.X;
}
leftTopPoint = trans.UnTransformPoint(leftTopPoint);
rightBottomPoint = trans.UnTransformPoint(rightBottomPoint);
if (true)//表示整行选中
{
leftTopPoint.X = 0;
rightBottomPoint.X = this.ClientSize.Width;
}
if (leftTopPoint != Point.Empty && rightBottomPoint != Point.Empty)
{
Rectangle rect = new Rectangle(leftTopPoint.X, leftTopPoint.Y, rightBottomPoint.X - leftTopPoint.X, rightBottomPoint.Y - leftTopPoint.Y);
g.ResetClip();
g.PageUnit = System.Drawing.GraphicsUnit.Pixel;
g.ResetTransform();
using (System.Drawing.SolidBrush b = new System.Drawing.SolidBrush(FillColor))
{
g.FillRectangle(b, rect);
}
}
}
/// <summary>
/// 已重载:绘制文档内容
/// </summary>
/// <param name="e">绘制事件参数</param>
protected override void OnPaint(System.Windows.Forms.PaintEventArgs e)
{
if (myUpdateLock.Updating)
{
return;
}
System.Drawing.Rectangle ClipRect = e.ClipRectangle;
System.Drawing.Point sp = this.AutoScrollPosition;
//int ax = - this.AutoScrollPosition.X ;
//int ay = - this.AutoScrollPosition.Y ;
this.RefreshScaleTransform();
//
MultiPageTransform trans = (MultiPageTransform)this.myTransform;
// trans.ClearSourceOffset();
// trans.OffsetSource( sp.X , sp.Y , true );
System.Drawing.Graphics g = e.Graphics;
foreach (PrintPage myPage in myPages)
{
System.Drawing.Rectangle ClientBounds = myPage.ClientBounds;
ClientBounds.Offset(sp);
if (ClientBounds.IntersectsWith(ClipRect))
{
this.SetPageIndex(myPage.Index);
System.Drawing.Drawing2D.GraphicsState state = e.Graphics.Save();
e.Graphics.ResetTransform();
e.Graphics.PageUnit = System.Drawing.GraphicsUnit.Pixel;
e.Graphics.ResetClip();
PageFrameDrawer pfdraw = new PageFrameDrawer();
pfdraw.PageHeaderHeight = (int)(MeasureConvert.DocumentToMillimeter((double)this.myPages.HeadHeight) * 3.776);
pfdraw.PageFooterHeight = (int)(MeasureConvert.DocumentToMillimeter((double)this.myPages.FooterHeight) * 3.776);
pfdraw.BackColor = this.PageBackColor;
pfdraw.DrawTopMargin = this.drawtopmargin;
pfdraw.DrawBottomMargin = this.drawbottommargin;
pfdraw.DrawPageFrame(
ClientBounds,
this.myClientMargins,
e.Graphics,
ClipRect,
myPage == this.myCurrentPage,
true);
e.Graphics.Restore(state);
foreach (SimpleRectangleTransform item in trans)
{
if (item.Visible && item.Tag == myPage)
{
System.Drawing.Rectangle rect = System.Drawing.Rectangle.Intersect(
e.ClipRectangle,
item.SourceRect);
if (!rect.IsEmpty)
{
TransformPaint(e, item);
}
}
}
}
}
base.OnPaint(e);
}
//
// private void UpdateTransform()
// {
// float rate = ( float )( 1.0 / this.ClientToViewXRate );
// MultiPageTransform trans = ( MultiPageTransform ) this.myTransform ;
// trans.Pages = myPages ;
// trans.Refresh( rate , this.intPageSpacing );
// }
/// <summary>
/// 根据分页信息更新页面排布
/// </summary>
public virtual void UpdatePages()
{
if (Common.StackTraceHelper.CheckRecursion())
{
return;
}
float rate = (float)(1.0 / this.ClientToViewXRate);
System.Drawing.Size size = new System.Drawing.Size(
(int)(myPages.PaperWidth * rate),
(int)(myPages.PaperHeight * rate));
System.Drawing.Size TotalSize = new System.Drawing.Size(
size.Width + this.intPageSpacing * 2,
(size.Height + this.intPageSpacing) * myPages.Count + this.intPageSpacing);
if (this.AutoScrollMinSize.Equals(TotalSize) == false)
{
this.AutoScrollMinSize = TotalSize;
}
MultiPageTransform trans = (MultiPageTransform)this.myTransform;
base.intGraphicsUnit = myPages.GraphicsUnit;
trans.Pages = myPages;
trans.Refresh(rate, this.intPageSpacing);
myClientMargins = new System.Drawing.Printing.Margins(
(int)(myPages.LeftMargin * rate),
(int)(myPages.RightMargin * rate),
(int)(myPages.TopMargin * rate),
(int)(myPages.BottomMargin * rate));
myClientPageSize = new System.Drawing.Size(
(int)(myPages.PaperWidth * rate),
(int)(myPages.PaperHeight * rate));
int ClientWidth = this.ClientSize.Width;
int x = 0;
if (ClientWidth <= TotalSize.Width)
{
x = this.intPageSpacing;
}
else
{
x = (ClientWidth - TotalSize.Width) / 2 + intPageSpacing;
}
trans.OffsetSource(x, 0, false);
this.RefreshScaleTransform();
System.Drawing.Rectangle rect = System.Drawing.Rectangle.Empty;
for (int iCount = 0; iCount < myPages.Count; iCount++)
{
rect.X = x;
rect.Y = (size.Height + this.intPageSpacing) * iCount + this.intPageSpacing;
rect.Width = size.Width;
rect.Height = size.Height;
myPages[iCount].ClientBounds = rect;
}
this.UpdateCurrentPage();
}
