412 lines
11 KiB
C#
412 lines
11 KiB
C#
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using System;
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using System.Collections;
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using System.ComponentModel;
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using System.Drawing;
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using System.Data;
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using System.Windows.Forms;
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using System.Drawing.Printing;
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using System.Drawing.Drawing2D;
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namespace PrintableListView
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{
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/// <summary>
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/// Summary description for PrintableListView.
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/// </summary>
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public class PrintableListView : System.Windows.Forms.ListView
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{
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// Print fields
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private PrintDocument m_printDoc = new PrintDocument();
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private PageSetupDialog m_setupDlg = new PageSetupDialog();
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private PrintPreviewDialog m_previewDlg = new PrintPreviewDialog();
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private PrintDialog m_printDlg = new PrintDialog();
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private int m_nPageNumberC = 1;
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private int m_nPageNumber=1;
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private int m_nStartRow=0;
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private int m_nStartCol=0;
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private bool m_bPrintSel=false;
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private bool m_bFitToPage=false;
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private float m_fListWidth=0.0f;
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private float[] m_arColsWidth;
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private float m_fDpi=96.0f;
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private string m_strTitle="";
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/// <summary>
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/// Required designer variable.
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/// </summary>
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private System.ComponentModel.Container components = null;
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#region Properties
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/// <summary>
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/// Gets or sets whether to fit the list width on a single page
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/// </summary>
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/// <value>
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/// <c>True</c> if you want to scale the list width so it will fit on a single page.
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/// </value>
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/// <remarks>
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/// If you choose false (the default value), and the list width exceeds the page width, the list
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/// will be broken in multiple page.
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/// </remarks>
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public bool FitToPage
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{
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get {return m_bFitToPage;}
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set {m_bFitToPage=value;}
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}
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/// <summary>
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/// Gets or sets the title to dispaly as page header in the printed list
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/// </summary>
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/// <value>
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/// A <see cref="string"/> the represents the title printed as page header.
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/// </value>
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public string Title
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{
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get {return m_strTitle;}
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set {m_strTitle=value;}
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}
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#endregion
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public PrintableListView()
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{
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// This call is required by the Windows.Forms Form Designer.
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InitializeComponent();
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m_printDoc.BeginPrint += new PrintEventHandler(OnBeginPrint);
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m_printDoc.PrintPage += new PrintPageEventHandler(OnPrintPage);
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m_setupDlg.Document = m_printDoc;
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m_previewDlg.Document = m_printDoc;
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m_printDlg.Document = m_printDoc;
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m_printDlg.AllowSomePages = false;
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}
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/// <summary>
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/// Clean up any resources being used.
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/// </summary>
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protected override void Dispose( bool disposing )
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{
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if( disposing )
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{
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if( components != null )
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components.Dispose();
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}
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base.Dispose( disposing );
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}
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#region Component Designer generated code
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/// <summary>
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/// Required method for Designer support - do not modify
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/// the contents of this method with the code editor.
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/// </summary>
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private void InitializeComponent()
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{
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components = new System.ComponentModel.Container();
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}
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#endregion
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/// <summary>
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/// Show the standard page setup dialog box that lets the user specify
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/// margins, page orientation, page sources, and paper sizes.
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/// </summary>
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public void PageSetup()
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{
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m_setupDlg.ShowDialog();
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}
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/// <summary>
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/// Show the standard print preview dialog box.
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/// </summary>
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public void PrintPreview()
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{
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m_printDoc.DocumentName = "List View";
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m_nPageNumber = 1;
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m_bPrintSel = false;
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m_previewDlg.FindForm().WindowState = FormWindowState.Maximized;
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m_previewDlg.ShowDialog(this);
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}
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/// <summary>
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/// Start the print process.
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/// </summary>
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public void Print()
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{
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m_printDlg.AllowSelection = this.SelectedItems.Count>0;
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// Show the standard print dialog box, that lets the user select a printer
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// and change the settings for that printer.
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if (m_printDlg.ShowDialog(this) == DialogResult.OK)
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{
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m_printDoc.DocumentName = m_strTitle;
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m_bPrintSel = m_printDlg.PrinterSettings.PrintRange==PrintRange.Selection;
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m_nPageNumber = 1;
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// Start print
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m_printDoc.Print();
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}
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}
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#region Events Handlers
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private void OnBeginPrint(object sender, PrintEventArgs e)
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{
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PreparePrint();
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}
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private void OnPrintPage(object sender, PrintPageEventArgs e)
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{
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int nNumItems = GetItemsCount(); // Number of items to print
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if (nNumItems==0 || m_nStartRow>=nNumItems)
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{
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e.HasMorePages = false;
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return;
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}
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int nNextStartCol = 0; // First column exeeding the page width
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float x = 0.0f; // Current horizontal coordinate
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float y = 0.0f; // Current vertical coordinate
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float cx = 4.0f; // The horizontal space, in hundredths of an inch,
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// of the padding between items text and
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// their cell boundaries.
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float fScale = 1.0f; // Scale factor when fit to page is enabled
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float fRowHeight = 0.0f; // The height of the current row
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float fColWidth = 0.0f; // The width of the current column
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RectangleF rectFull; // The full available space
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RectangleF rectBody; // Area for the list items
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bool bUnprintable = false;
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Graphics g = e.Graphics;
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if (g.VisibleClipBounds.X<0) // Print preview
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{
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rectFull = e.MarginBounds;
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// Convert to hundredths of an inch
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rectFull = new RectangleF(rectFull.X/m_fDpi*100.0f,
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rectFull.Y/m_fDpi*100.0f,
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rectFull.Width/m_fDpi*100.0f,
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rectFull.Height/m_fDpi*100.0f);
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}
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else // Print
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{
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// Printable area (approximately) of the page, taking into account the user margins
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rectFull = new RectangleF(
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e.MarginBounds.Left - (e.PageBounds.Width - g.VisibleClipBounds.Width)/2,
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e.MarginBounds.Top - (e.PageBounds.Height - g.VisibleClipBounds.Height)/2,
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e.MarginBounds.Width,
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e.MarginBounds.Height);
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}
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rectBody = RectangleF.Inflate(rectFull, 0, -2*Font.GetHeight(g));
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// Display title at top
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StringFormat sfmt = new StringFormat();
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sfmt.Alignment = StringAlignment.Center;
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g.DrawString(m_strTitle, Font, Brushes.Black, rectFull, sfmt);
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// Display page number at bottom
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sfmt.LineAlignment = StringAlignment.Far;
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g.DrawString("Page " + m_nPageNumber, Font, Brushes.Black, rectFull, sfmt);
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if (m_nStartCol==0 && m_bFitToPage && m_fListWidth>rectBody.Width)
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{
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// Calculate scale factor
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fScale = rectBody.Width / m_fListWidth;
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}
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// Scale the printable area
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rectFull = new RectangleF(rectFull.X/fScale,
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rectFull.Y/fScale,
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rectFull.Width/fScale,
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rectFull.Height/fScale);
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rectBody = new RectangleF(rectBody.X/fScale,
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rectBody.Y/fScale,
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rectBody.Width/fScale,
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rectBody.Height/fScale);
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// Setting scale factor and unit of measure
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g.ScaleTransform(fScale, fScale);
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g.PageUnit = GraphicsUnit.Inch;
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g.PageScale = 0.01f;
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// Start print
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nNextStartCol=0;
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y = rectBody.Top;
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// Columns headers ----------------------------------------
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Brush brushHeader = new SolidBrush(Color.LightGray);
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Font fontHeader = new Font(this.Font, FontStyle.Bold);
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fRowHeight = fontHeader.GetHeight(g)*3.0f;
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x = rectBody.Left;
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for (int i=m_nStartCol; i<Columns.Count; i++)
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{
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ColumnHeader ch = Columns[i];
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fColWidth = m_arColsWidth[i];
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if ( (x + fColWidth) <= rectBody.Right)
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{
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// Rectangle
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g.FillRectangle(brushHeader, x, y, fColWidth, fRowHeight);
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g.DrawRectangle(Pens.Black, x, y, fColWidth, fRowHeight);
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// Text
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StringFormat sf = new StringFormat();
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if (ch.TextAlign == HorizontalAlignment.Left)
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sf.Alignment = StringAlignment.Near;
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else if (ch.TextAlign == HorizontalAlignment.Center)
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sf.Alignment = StringAlignment.Center;
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else
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sf.Alignment = StringAlignment.Far;
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sf.LineAlignment = StringAlignment.Center;
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sf.FormatFlags = StringFormatFlags.NoWrap;
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sf.Trimming = StringTrimming.EllipsisCharacter;
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RectangleF rectText = new RectangleF(x+cx, y, fColWidth-1-2*cx, fRowHeight);
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g.DrawString(ch.Text, fontHeader, Brushes.Black, rectText, sf);
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x += fColWidth;
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}
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else
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{
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if (i==m_nStartCol)
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bUnprintable=true;
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nNextStartCol=i;
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break;
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}
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}
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y += fRowHeight;
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// Rows ---------------------------------------------------
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int nRow = m_nStartRow;
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bool bEndOfPage = false;
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while (!bEndOfPage && nRow<nNumItems)
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{
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ListViewItem item = GetItem(nRow);
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fRowHeight = item.Bounds.Height/m_fDpi*100.0f + 5.0f;
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if (y+fRowHeight>rectBody.Bottom)
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{
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bEndOfPage=true;
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}
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else
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{
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x = rectBody.Left;
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for (int i=m_nStartCol; i<Columns.Count; i++)
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{
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ColumnHeader ch = Columns[i];
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fColWidth = m_arColsWidth[i];
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if ( (x + fColWidth) <= rectBody.Right)
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{
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// Rectangle
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g.DrawRectangle(Pens.Black, x, y, fColWidth, fRowHeight);
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// Text
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StringFormat sf = new StringFormat();
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if (ch.TextAlign == HorizontalAlignment.Left)
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sf.Alignment = StringAlignment.Near;
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else if (ch.TextAlign == HorizontalAlignment.Center)
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sf.Alignment = StringAlignment.Center;
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else
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sf.Alignment = StringAlignment.Far;
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sf.LineAlignment = StringAlignment.Center;
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sf.FormatFlags = StringFormatFlags.NoWrap;
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sf.Trimming = StringTrimming.EllipsisCharacter;
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// Text
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string strText = i==0 ? item.Text : item.SubItems[i].Text;
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Font font = i==0 ? item.Font : item.SubItems[i].Font;
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RectangleF rectText = new RectangleF(x+cx, y, fColWidth-1-2*cx, fRowHeight);
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g.DrawString(strText, font, Brushes.Black, rectText, sf);
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x += fColWidth;
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}
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else
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{
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nNextStartCol=i;
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break;
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}
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}
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y += fRowHeight;
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nRow++;
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}
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}
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if (nNextStartCol==0)
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m_nStartRow = nRow;
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m_nStartCol = nNextStartCol;
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m_nPageNumberC++;
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m_nPageNumber++;
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e.HasMorePages = (!bUnprintable && (m_nStartRow>0 && m_nStartRow<nNumItems) || m_nStartCol>0);
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if (!e.HasMorePages)
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{
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m_nPageNumber=1;
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m_nStartRow=0;
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m_nStartCol=0;
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}
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brushHeader.Dispose();
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}
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#endregion
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private int GetItemsCount()
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{
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return m_bPrintSel ? SelectedItems.Count : Items.Count;
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}
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private ListViewItem GetItem(int index)
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{
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return m_bPrintSel ? SelectedItems[index] : Items[index];
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}
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private void PreparePrint()
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{
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// Gets the list width and the columns width in units of hundredths of an inch.
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this.m_fListWidth = 0.0f;
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this.m_arColsWidth = new float[this.Columns.Count];
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Graphics g = CreateGraphics();
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m_fDpi = g.DpiX;
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g.Dispose();
|
||
|
|
|
||
|
|
for (int i=0; i<Columns.Count; i++)
|
||
|
|
{
|
||
|
|
ColumnHeader ch = Columns[i];
|
||
|
|
float fWidth = ch.Width/m_fDpi*100 + 1; // Column width + separator
|
||
|
|
m_fListWidth += fWidth;
|
||
|
|
m_arColsWidth[i] = fWidth;
|
||
|
|
}
|
||
|
|
m_fListWidth += 1; // separator
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
}
|