public override void OnStartPrint(PrintDocument document, PrintEventArgs e)
{
Debug.Assert(dc == null && graphics == null, "PrintController methods called in the wrong order?");
// For security purposes, don't assume our public methods methods are called in any particular order
CheckSecurity();
base.OnStartPrint(document, e);
try {
if (!document.PrinterSettings.IsValid)
{
throw new InvalidPrinterException(document.PrinterSettings);
}
IntSecurity.AllPrintingAndUnmanagedCode.Assert();
// We need a DC as a reference; we don't actually draw on it.
// We make sure to reuse the same one to improve performance.
dc = document.PrinterSettings.CreateInformationContext(modeHandle);
}
finally {
CodeAccessPermission.RevertAssert();
}
}
/// <include file='doc\DefaultPrintController.uex' path='docs/doc[@for="StandardPrintController.OnEndPrint"]/*' />
/// <devdoc>
/// <para>
/// Implements EndPrint for printing to a physical printer.
/// </para>
/// </devdoc>
public override void OnEndPrint(PrintDocument document, PrintEventArgs e)
{
Debug.Assert(dc != IntPtr.Zero && graphics == null, "PrintController methods called in the wrong order?");
// For security purposes, don't assume our public methods methods are called in any particular order
CheckSecurity(document);
IntSecurity.UnmanagedCode.Assert();
if (dc != IntPtr.Zero)
{
int result = (e.Cancel) ? SafeNativeMethods.AbortDoc(new HandleRef(this, dc)) : SafeNativeMethods.EndDoc(new HandleRef(this, dc));
if (result <= 0)
{
throw new Win32Exception();
}
bool success = SafeNativeMethods.DeleteDC(new HandleRef(this, dc));
if (!success)
{
throw new Win32Exception();
}
dc = IntPtr.Zero;
}
CodeAccessPermission.RevertAssert();
base.OnEndPrint(document, e);
}
public Stream OpenFile()
{
Debug.WriteLineIf(IntSecurity.SecurityDemand.TraceVerbose, "FileDialogOpenFile Demanded");
IntSecurity.FileDialogOpenFile.Demand();
string filename = FileNamesInternal[0];
if (filename == null || (filename.Length == 0))
{
throw new ArgumentNullException("FileName");
}
Stream s = null;
// SECREVIEW : We demanded the FileDialog permission above, so it is safe
// : to assert this here. Since the user picked the file, it
// : is OK to give them readonly access to the stream.
//
new FileIOPermission(FileIOPermissionAccess.Read, IntSecurity.UnsafeGetFullPath(filename)).Assert();
try
{
s = new FileStream(filename, FileMode.Open, FileAccess.Read, FileShare.Read);
}
finally
{
CodeAccessPermission.RevertAssert();
}
return(s);
}
public Stream OpenFile()
{
Debug.WriteLineIf(IntSecurity.SecurityDemand.TraceVerbose, "FileDialogOpenFile Demanded");
IntSecurity.FileDialogOpenFile.Demand();
string filename = FileNamesInternal[0];
if (filename == null || (filename.Length == 0))
{
throw new ArgumentNullException(nameof(FileName));
}
Stream s = null;
//
new FileIOPermission(FileIOPermissionAccess.Read, IntSecurity.UnsafeGetFullPath(filename)).Assert();
try
{
s = new FileStream(filename, FileMode.Open, FileAccess.Read, FileShare.Read);
}
finally
{
CodeAccessPermission.RevertAssert();
}
return(s);
}
public Stream OpenFile()
{
Debug.WriteLineIf(IntSecurity.SecurityDemand.TraceVerbose, "FileDialogSaveFile Demanded");
IntSecurity.FileDialogSaveFile.Demand();
string filename = FileNamesInternal[0];
if (string.IsNullOrEmpty(filename))
{
throw new ArgumentNullException("FileName");
}
Stream s = null;
//
new FileIOPermission(FileIOPermissionAccess.AllAccess, IntSecurity.UnsafeGetFullPath(filename)).Assert();
try {
s = new FileStream(filename, FileMode.Create, FileAccess.ReadWrite);
}
finally {
CodeAccessPermission.RevertAssert();
}
return(s);
}
public override void OnEndPrint(PrintDocument document, PrintEventArgs e)
{
Debug.Assert(dc != null && graphics == null, "PrintController methods called in the wrong order?");
// For security purposes, don't assume our public methods methods are called in any particular order
CheckSecurity(document);
IntSecurity.UnmanagedCode.Assert();
try
{
if (dc != null)
{
try {
int result = (e.Cancel) ? SafeNativeMethods.AbortDoc(new HandleRef(dc, dc.Hdc)) : SafeNativeMethods.EndDoc(new HandleRef(dc, dc.Hdc));
if (result <= 0)
{
throw new Win32Exception();
}
}
finally {
dc.Dispose();
dc = null;
}
}
}
finally {
CodeAccessPermission.RevertAssert();
}
base.OnEndPrint(document, e);
}
/// <devdoc>
/// Initializes this image for the first time. This should only be called once.
/// </devdoc>
private void Initialize(SafeNativeMethods.IPicture picture)
{
if (this.picture != null)
{
throw new InvalidOperationException(SR.GetString(SR.IllegalState, GetType().Name));
}
this.picture = picture;
// SECUNDONE : Assert shouldn't be needed, however we can't put SuppressUnmanagedCode
// : on the IPicture interface, so we must do an Assert.
//
new SecurityPermission(SecurityPermissionFlag.UnmanagedCode).Assert();
try {
if (picture != null && picture.GetPictureType() == NativeMethods.Ole.PICTYPE_ICON)
{
handle = picture.GetHandle();
ownHandle = false;
}
else
{
throw new ArgumentException(SR.GetString(SR.InvalidPictureType,
"picture",
"Cursor"), "picture");
}
}
finally {
CodeAccessPermission.RevertAssert();
}
}
public override Graphics OnStartPage(PrintDocument document, PrintPageEventArgs e)
{
Debug.Assert(dc != null && graphics == null, "PrintController methods called in the wrong order?");
// For security purposes, don't assume our public methods methods are called in any particular order
CheckSecurity(document);
base.OnStartPage(document, e);
try {
IntSecurity.AllPrintingAndUnmanagedCode.Assert();
e.PageSettings.CopyToHdevmode(modeHandle);
IntPtr modePointer = SafeNativeMethods.GlobalLock(new HandleRef(this, modeHandle));
try {
IntPtr result = SafeNativeMethods.ResetDC(new HandleRef(this.dc, dc.Hdc), new HandleRef(null, modePointer));
Debug.Assert(result == dc.Hdc, "ResetDC didn't return the same handle I gave it");
}
finally {
SafeNativeMethods.GlobalUnlock(new HandleRef(this, modeHandle));
}
}
finally {
CodeAccessPermission.RevertAssert();
}
// int horizontalResolution = Windows.GetDeviceCaps(dc.Hdc, SafeNativeMethods.HORZRES);
// int verticalResolution = Windows.GetDeviceCaps(dc.Hdc, SafeNativeMethods.VERTRES);
graphics = Graphics.FromHdcInternal(dc.Hdc);
if (graphics != null && document.OriginAtMargins)
{
// Adjust the origin of the graphics object to be at the
// user-specified margin location
//
int dpiX = UnsafeNativeMethods.GetDeviceCaps(new HandleRef(this.dc, dc.Hdc), SafeNativeMethods.LOGPIXELSX);
int dpiY = UnsafeNativeMethods.GetDeviceCaps(new HandleRef(this.dc, dc.Hdc), SafeNativeMethods.LOGPIXELSY);
int hardMarginX_DU = UnsafeNativeMethods.GetDeviceCaps(new HandleRef(this.dc, dc.Hdc), SafeNativeMethods.PHYSICALOFFSETX);
int hardMarginY_DU = UnsafeNativeMethods.GetDeviceCaps(new HandleRef(this.dc, dc.Hdc), SafeNativeMethods.PHYSICALOFFSETY);
float hardMarginX = hardMarginX_DU * 100 / dpiX;
float hardMarginY = hardMarginY_DU * 100 / dpiY;
graphics.TranslateTransform(-hardMarginX, -hardMarginY);
graphics.TranslateTransform(document.DefaultPageSettings.Margins.Left, document.DefaultPageSettings.Margins.Top);
}
int result2 = SafeNativeMethods.StartPage(new HandleRef(this.dc, dc.Hdc));
if (result2 <= 0)
{
throw new Win32Exception();
}
return(graphics);
}
/// <include file='doc\PreviewPrintController.uex' path='docs/doc[@for="PreviewPrintController.OnEndPrint"]/*' />
/// <devdoc>
/// <para>
/// Implements EndPrint for generating print preview information.
/// </para>
/// </devdoc>
public override void OnEndPrint(PrintDocument document, PrintEventArgs e)
{
Debug.Assert(dc != IntPtr.Zero && graphics == null, "PrintController methods called in the wrong order?");
// For security purposes, don't assume our public methods methods are called in any particular order
CheckSecurity();
IntSecurity.UnmanagedCode.Assert();
SafeNativeMethods.DeleteDC(new HandleRef(this, dc));
dc = IntPtr.Zero;
CodeAccessPermission.RevertAssert();
base.OnEndPrint(document, e);
}
/// <include file='doc\DefaultPrintController.uex' path='docs/doc[@for="StandardPrintController.OnEndPage"]/*' />
/// <devdoc>
/// <para>
/// Implements EndPage for printing to a physical printer.
/// </para>
/// </devdoc>
public override void OnEndPage(PrintDocument document, PrintPageEventArgs e)
{
Debug.Assert(dc != IntPtr.Zero && graphics != null, "PrintController methods called in the wrong order?");
// For security purposes, don't assume our public methods methods are called in any particular order
CheckSecurity(document);
IntSecurity.UnmanagedCode.Assert();
int result = SafeNativeMethods.EndPage(new HandleRef(this, dc));
if (result <= 0)
{
throw new Win32Exception();
}
graphics.Dispose(); // Dispose of GDI+ Graphics; keep the DC
graphics = null;
CodeAccessPermission.RevertAssert();
base.OnEndPage(document, e);
}
public override Graphics OnStartPage(PrintDocument document, PrintPageEventArgs e)
{
Debug.Assert(dc != null && graphics == null, "PrintController methods called in the wrong order?");
// For security purposes, don't assume our public methods methods are called in any particular order
CheckSecurity();
base.OnStartPage(document, e);
try {
IntSecurity.AllPrintingAndUnmanagedCode.Assert();
if (e.CopySettingsToDevMode)
{
e.PageSettings.CopyToHdevmode(modeHandle);
}
Size size = e.PageBounds.Size;
// Metafile framing rectangles apparently use hundredths of mm as their unit of measurement,
// instead of the GDI+ standard hundredth of an inch.
Size metafileSize = PrinterUnitConvert.Convert(size, PrinterUnit.Display, PrinterUnit.HundredthsOfAMillimeter);
// Create a Metafile which accepts only GDI+ commands since we are the ones creating
// and using this ...
// Framework creates a dual-mode EMF for each page in the preview.
// When these images are displayed in preview,
// they are added to the dual-mode EMF. However,
// GDI+ breaks during this process if the image
// is sufficiently large and has more than 254 colors.
// This code path can easily be avoided by requesting
// an EmfPlusOnly EMF..
Metafile metafile = new Metafile(dc.Hdc, new Rectangle(0, 0, metafileSize.Width, metafileSize.Height), MetafileFrameUnit.GdiCompatible, EmfType.EmfPlusOnly);
PreviewPageInfo info = new PreviewPageInfo(metafile, size);
list.Add(info);
PrintPreviewGraphics printGraphics = new PrintPreviewGraphics(document, e);
graphics = Graphics.FromImage(metafile);
if (graphics != null && document.OriginAtMargins)
{
// Adjust the origin of the graphics object to be at the
// user-specified margin location
//
int dpiX = UnsafeNativeMethods.GetDeviceCaps(new HandleRef(dc, dc.Hdc), SafeNativeMethods.LOGPIXELSX);
int dpiY = UnsafeNativeMethods.GetDeviceCaps(new HandleRef(dc, dc.Hdc), SafeNativeMethods.LOGPIXELSY);
int hardMarginX_DU = UnsafeNativeMethods.GetDeviceCaps(new HandleRef(dc, dc.Hdc), SafeNativeMethods.PHYSICALOFFSETX);
int hardMarginY_DU = UnsafeNativeMethods.GetDeviceCaps(new HandleRef(dc, dc.Hdc), SafeNativeMethods.PHYSICALOFFSETY);
float hardMarginX = hardMarginX_DU * 100 / dpiX;
float hardMarginY = hardMarginY_DU * 100 / dpiY;
graphics.TranslateTransform(-hardMarginX, -hardMarginY);
graphics.TranslateTransform(document.DefaultPageSettings.Margins.Left, document.DefaultPageSettings.Margins.Top);
}
graphics.PrintingHelper = printGraphics;
if (antiAlias)
{
graphics.TextRenderingHint = TextRenderingHint.AntiAlias;
graphics.SmoothingMode = SmoothingMode.AntiAlias;
}
}
finally {
CodeAccessPermission.RevertAssert();
}
return(graphics);
}
