internal PrintForm(FormInfo1 form)
{
this._Flags = form.Flags;
this._Name = form.pName;
this._Unit = PrintSystemUnit.ThousandthsOfMillimeter;
var size = form.Size;
this._Width = size.cx;
this._Height = size.cy;
var area = form.ImageableArea;
this._LeftMargin = area.left;
this._RightMargin = size.cx - area.right;
this._TopMargin = area.top;
this._BottomMargin = size.cy - area.bottom;
}
/// <summary>
/// 长度单位转换
/// </summary>
/// <param name="value">长度数值</param>
/// <param name="source">原始单位</param>
/// <param name="target">目标单位</param>
/// <returns></returns>
/// <remarks>
/// 个别情况转换可能存在误差, 例如:
/// 1). System.Drawing.Printing.PaperSize; Unit = 0.01 in; 并且值类型为整数;
/// A4 = { Width = 827, Height = 1169 };
/// 将单位转换为 0.001 mm;
/// A4 = { Width = 210058, Height = 296926 }; 跟实际值不符: { Width = 210000, Height = 297000 };
///
/// 2). 反向计算
/// A4 = { Width = 210000, Height = 297000 } Unit: 0.001 mm;
/// 将单位转换为 0.01 in;
/// A4 = { Width = 826.77165354330714, Height = 1169.2913385826771 };
/// 调用 Math.Round(double) 之后:
/// A4 = { Width = 827, Height = 1169 }; Unit: 0.01 in;
/// </remarks>
public static double Convert(double value, PrintSystemUnit source, PrintSystemUnit target)
{
switch (source)
{
case PrintSystemUnit.ThousandthsOfMillimeter:
switch (target)
{
case PrintSystemUnit.ThousandthsOfMillimeter:
return(value);
case PrintSystemUnit.HundredthsOfMillimeter:
return(value * 0.1); // ÷10;
case PrintSystemUnit.TenthsOfMillimeter:
return(value * 0.01); // ÷100;
case PrintSystemUnit.Millimeter:
return(value * 0.001); // ÷1000;
case PrintSystemUnit.Centimeter:
return(value * 0.0001); // ÷10000;
case PrintSystemUnit.ThousandthsOfInch:
return(value / 25.4);
case PrintSystemUnit.HundredthsOfInch:
return(value / 254d);
case PrintSystemUnit.Inch:
return(value / 25400d);
}
break;
case PrintSystemUnit.HundredthsOfMillimeter:
switch (target)
{
case PrintSystemUnit.ThousandthsOfMillimeter:
return(value * 10d);
case PrintSystemUnit.HundredthsOfMillimeter:
return(value);
case PrintSystemUnit.TenthsOfMillimeter:
return(value * 0.1); // ÷10;
case PrintSystemUnit.Millimeter:
return(value * 0.01); // ÷100;
case PrintSystemUnit.Centimeter:
return(value * 0.0001); // ÷1000;
case PrintSystemUnit.ThousandthsOfInch:
return(value / 2.54);
case PrintSystemUnit.HundredthsOfInch:
return(value / 25.4);
case PrintSystemUnit.Inch:
return(value / 2540d);
}
break;
case PrintSystemUnit.TenthsOfMillimeter:
switch (target)
{
case PrintSystemUnit.ThousandthsOfMillimeter:
return(value * 100d);
case PrintSystemUnit.HundredthsOfMillimeter:
return(value * 10d);
case PrintSystemUnit.TenthsOfMillimeter:
return(value);
case PrintSystemUnit.Millimeter:
return(value * 0.1); // ÷10;
case PrintSystemUnit.Centimeter:
return(value * 0.01d); // ÷100;
case PrintSystemUnit.ThousandthsOfInch:
return(value / 0.254);
case PrintSystemUnit.HundredthsOfInch:
return(value / 2.54);
case PrintSystemUnit.Inch:
return(value / 254d);
}
break;
case PrintSystemUnit.Millimeter:
switch (target)
{
case PrintSystemUnit.ThousandthsOfMillimeter:
return(value * 1000d);
case PrintSystemUnit.HundredthsOfMillimeter:
return(value * 100d);
case PrintSystemUnit.TenthsOfMillimeter:
return(value * 10d);
case PrintSystemUnit.Millimeter:
return(value);
case PrintSystemUnit.Centimeter:
return(value * 0.1); // ÷10;
case PrintSystemUnit.ThousandthsOfInch:
return(value / 0.0254);
case PrintSystemUnit.HundredthsOfInch:
return(value / 0.254);
case PrintSystemUnit.Inch:
return(value / 25.4);
}
break;
case PrintSystemUnit.Centimeter:
switch (target)
{
case PrintSystemUnit.ThousandthsOfMillimeter:
return(value * 10000d);
case PrintSystemUnit.HundredthsOfMillimeter:
return(value * 1000d);
case PrintSystemUnit.TenthsOfMillimeter:
return(value * 100d);
case PrintSystemUnit.Millimeter:
return(value * 10d);
case PrintSystemUnit.Centimeter:
return(value);
case PrintSystemUnit.ThousandthsOfInch:
return(value / 0.00254);
case PrintSystemUnit.HundredthsOfInch:
return(value / 0.0254);
case PrintSystemUnit.Inch:
return(value / 2.54);
}
break;
case PrintSystemUnit.ThousandthsOfInch:
switch (target)
{
case PrintSystemUnit.ThousandthsOfMillimeter:
return(value * 25.4);
case PrintSystemUnit.HundredthsOfMillimeter:
return(value * 2.54);
case PrintSystemUnit.TenthsOfMillimeter:
return(value * 0.254);
case PrintSystemUnit.Millimeter:
return(value * 0.0254);
case PrintSystemUnit.Centimeter:
return(value * 0.00254);
case PrintSystemUnit.ThousandthsOfInch:
return(value);
case PrintSystemUnit.HundredthsOfInch:
return(value * 0.1); // ÷10;
case PrintSystemUnit.Inch:
return(value * 0.001); // ÷1000;
}
break;
case PrintSystemUnit.HundredthsOfInch:
switch (target)
{
case PrintSystemUnit.ThousandthsOfMillimeter:
return(value * 254d);
case PrintSystemUnit.HundredthsOfMillimeter:
return(value * 25.4);
case PrintSystemUnit.TenthsOfMillimeter:
return(value * 2.54);
case PrintSystemUnit.Millimeter:
return(value * 0.254);
case PrintSystemUnit.Centimeter:
return(value * 0.0254);
case PrintSystemUnit.ThousandthsOfInch:
return(value * 10d);
case PrintSystemUnit.HundredthsOfInch:
return(value);
case PrintSystemUnit.Inch:
return(value * 0.01); // ÷100;
}
break;
case PrintSystemUnit.Inch:
switch (target)
{
case PrintSystemUnit.ThousandthsOfMillimeter:
return(value * 25400d);
case PrintSystemUnit.HundredthsOfMillimeter:
return(value * 2540d);
case PrintSystemUnit.TenthsOfMillimeter:
return(value * 254d);
case PrintSystemUnit.Millimeter:
return(value * 25.4);
case PrintSystemUnit.Centimeter:
return(value * 2.54);
case PrintSystemUnit.ThousandthsOfInch:
return(value * 1000d);
case PrintSystemUnit.HundredthsOfInch:
return(value * 100d);
case PrintSystemUnit.Inch:
return(value);
}
break;
default:
throw new ArgumentOutOfRangeException("source");
}
throw new ArgumentOutOfRangeException("target");
}
public double GetHeight(PrintSystemUnit unit)
{
return(PrintSystemUnitConvert.Convert(this._Height, _Unit, unit));
}
public double GetWidth(PrintSystemUnit unit)
{
return(PrintSystemUnitConvert.Convert(this._Width, _Unit, unit));
}
static void AddOrUpdateForm(IntPtr hPrinter, string pFormName, double width, double height, PrintSystemUnit unit)
{
var level = 1;
var o = Native.ThunkGetForm(hPrinter, pFormName, level);
if (o != null)
{
var form = (FormInfo1)o;
if (form.Flags == FormInfoFlags.Builtin)
{
throw new ArgumentException("内建规格不可修改");
}
var w = (int)PrintSystemUnitConvert.Convert(width, unit, PrintSystemUnit.ThousandthsOfMillimeter);
var h = (int)PrintSystemUnitConvert.Convert(height, unit, PrintSystemUnit.ThousandthsOfMillimeter);
form.Size = new SIZE(w, h);
form.ImageableArea = new RECT(0, 0, w, h);
// Update
Native.ThunkSetForm(hPrinter, pFormName, form);
}
else
{
var w = (int)PrintSystemUnitConvert.Convert(width, unit, PrintSystemUnit.ThousandthsOfMillimeter);
var h = (int)PrintSystemUnitConvert.Convert(height, unit, PrintSystemUnit.ThousandthsOfMillimeter);
var form = new FormInfo1()
{
Flags = FormInfoFlags.User,
pName = pFormName,
Size = new SIZE(w, h),
ImageableArea = new RECT(0, 0, w, h),
};
// Add
Native.ThunkAddForm(hPrinter, form);
}
}
public static void AddFormOfServer(string pPrinterName, string pFormName, double width, double height, PrintSystemUnit unit)
{
var w = (int)PrintSystemUnitConvert.Convert(width, unit, PrintSystemUnit.ThousandthsOfMillimeter);
var h = (int)PrintSystemUnitConvert.Convert(height, unit, PrintSystemUnit.ThousandthsOfMillimeter);
AddFormOfServer(pPrinterName, pFormName, w, h);
}
public static void AddOrUpdatePrinterForm(string pPrinterName, string pFormName, double width, double height, PrintSystemUnit unit)
{
PrinterDefaults pDefault = null;
//if (pPrinterName != null)
pDefault = new PrinterDefaults()
{
DesiredAccess = (int)PrintAccessRights.PrinterGenericExecute
};
//else // String.Empty 将抛异常: 打印机名无效;
//pDefault = new PrinterDefaults() { DesiredAccess = (int)PrintAccessRights.ServerGenericWrite };
var hPrinter = IntPtr.Zero;
try
{
if (!Native.OpenPrinter(pPrinterName, out hPrinter, pDefault))
{
Error.ThrowLastError();
}
AddOrUpdateForm(hPrinter, pFormName, width, height, unit);
}
finally
{
Native.ClosePrinter(hPrinter);
hPrinter = IntPtr.Zero;
}
}
