private static IntTextFormatFlags GetIntTextFormatFlags(TextFormatFlags flags)
{
if (((uint)flags & WindowsGraphics.GdiUnsupportedFlagMask) == 0)
{
return((IntTextFormatFlags)flags);
}
// Clear TextRenderer custom flags.
IntTextFormatFlags windowsGraphicsSupportedFlags = (IntTextFormatFlags)(((uint)flags) & ~WindowsGraphics.GdiUnsupportedFlagMask);
return(windowsGraphicsSupportedFlags);
}
public Size MeasureText(string text, WindowsFont font, Size proposedSize, IntTextFormatFlags flags)
{
if (string.IsNullOrEmpty(text))
{
return(Size.Empty);
}
IntNativeMethods.DRAWTEXTPARAMS lpDTParams = null;
if (MeasurementDCInfo.IsMeasurementDC(this.DeviceContext))
{
lpDTParams = MeasurementDCInfo.GetTextMargins(this, font);
}
if (lpDTParams == null)
{
lpDTParams = this.GetTextMargins(font);
}
int num = (1 + lpDTParams.iLeftMargin) + lpDTParams.iRightMargin;
if (proposedSize.Width <= num)
{
proposedSize.Width = num;
}
if (proposedSize.Height <= 0)
{
proposedSize.Height = 1;
}
IntNativeMethods.RECT lpRect = IntNativeMethods.RECT.FromXYWH(0, 0, proposedSize.Width, proposedSize.Height);
HandleRef hDC = new HandleRef(null, this.dc.Hdc);
if (font != null)
{
this.dc.SelectFont(font);
}
if ((proposedSize.Height >= MaxSize.Height) && ((flags & IntTextFormatFlags.SingleLine) != IntTextFormatFlags.Default))
{
flags &= ~(IntTextFormatFlags.Bottom | IntTextFormatFlags.VerticalCenter);
}
if (proposedSize.Width == MaxSize.Width)
{
flags &= ~IntTextFormatFlags.WordBreak;
}
flags |= IntTextFormatFlags.CalculateRectangle;
IntUnsafeNativeMethods.DrawTextEx(hDC, text, ref lpRect, (int)flags, lpDTParams);
return(lpRect.Size);
}
public static Rectangle AdjustForVerticalAlignment(HandleRef hdc, string text, Rectangle bounds, IntTextFormatFlags flags, IntNativeMethods.DRAWTEXTPARAMS dtparams)
{
if (((((flags & IntTextFormatFlags.Bottom) == IntTextFormatFlags.Default) && ((flags & IntTextFormatFlags.VerticalCenter) == IntTextFormatFlags.Default)) || ((flags & IntTextFormatFlags.SingleLine) != IntTextFormatFlags.Default)) || ((flags & IntTextFormatFlags.CalculateRectangle) != IntTextFormatFlags.Default))
{
return bounds;
}
IntNativeMethods.RECT lpRect = new IntNativeMethods.RECT(bounds);
flags |= IntTextFormatFlags.CalculateRectangle;
int num = IntUnsafeNativeMethods.DrawTextEx(hdc, text, ref lpRect, (int) flags, dtparams);
if (num > bounds.Height)
{
return bounds;
}
Rectangle rectangle = bounds;
if ((flags & IntTextFormatFlags.VerticalCenter) != IntTextFormatFlags.Default)
{
rectangle.Y = (rectangle.Top + (rectangle.Height / 2)) - (num / 2);
return rectangle;
}
rectangle.Y = rectangle.Bottom - num;
return rectangle;
}
/// <devdoc>
/// Draws the text at the specified point, using the given Font and foreColor, and according to the
/// specified flags.
/// </devdoc>
public void DrawText(string text, WindowsFont font, Point pt, Color foreColor, IntTextFormatFlags flags)
{
DrawText(text, font, pt, foreColor, Color.Empty, flags);
}
/// <devdoc>
/// <para>
/// The GDI DrawText does not do multiline alignment when IntTextFormatFlags.SingleLine is not set. This
/// adjustment is to workaround that limitation. We don't want to duplicate SelectObject calls here,
/// so put your Font in the dc before calling this.
///
/// AdjustForVerticalAlignment is only used when the text is multiline and it fits inside the bounds passed in.
/// In that case we want the horizontal center of the multiline text to be at the horizontal center of the bounds.
///
/// If the text is multiline and it does not fit inside the bounds passed in, then return the bounds that were passed in.
/// This way we paint the top of the text at the top of the bounds passed in.
/// </para>
/// </devdoc>
public static Rectangle AdjustForVerticalAlignment(HandleRef hdc, string text, Rectangle bounds, IntTextFormatFlags flags, IntNativeMethods.DRAWTEXTPARAMS dtparams)
{
Debug.Assert( ((uint)flags & GdiUnsupportedFlagMask) == 0, "Some custom flags were left over and are not GDI compliant!" );
// Ok if any Top (Cannot test IntTextFormatFlags.Top because it is 0), single line text or measuring text.
bool isTop = (flags & IntTextFormatFlags.Bottom) == 0 && (flags & IntTextFormatFlags.VerticalCenter) == 0;
if( isTop ||((flags & IntTextFormatFlags.SingleLine) != 0) || ((flags & IntTextFormatFlags.CalculateRectangle) != 0) )
{
return bounds;
}
IntNativeMethods.RECT rect = new IntNativeMethods.RECT(bounds);
// Get the text bounds.
flags |= IntTextFormatFlags.CalculateRectangle;
int textHeight = IntUnsafeNativeMethods.DrawTextEx(hdc, text, ref rect, (int) flags, dtparams);
// if the text does not fit inside the bounds then return the bounds that were passed in
if (textHeight > bounds.Height)
{
return bounds;
}
Rectangle adjustedBounds = bounds;
if( (flags & IntTextFormatFlags.VerticalCenter) != 0 ) // Middle
{
adjustedBounds.Y = adjustedBounds.Top + adjustedBounds.Height / 2 - textHeight / 2;
}
else // Bottom.
{
adjustedBounds.Y = adjustedBounds.Bottom - textHeight;
}
return adjustedBounds;
}
/// <devdoc>
/// Returns the Size in logical units of the given text using the given Font, and according to the formatting flags.
/// The proposed size is used to create a bounding rectangle as follows:
/// - If there are multiple lines of text, DrawText uses the width of the rectangle pointed to by
/// the lpRect parameter and extends the base of the rectangle to bound the last line of text.
/// - If the largest word is wider than the rectangle, the width is expanded.
/// - If the text is less than the width of the rectangle, the width is reduced.
/// - If there is only one line of text, DrawText modifies the right side of the rectangle so that
/// it bounds the last character in the line.
/// If the font is null, the hdc's current font will be used.
///
/// Note for vertical fonts (if ever supported): DrawTextEx uses GetTextExtentPoint32 for measuring the text and this
/// function has the following limitation (from MSDN):
/// - This function assumes that the text is horizontal, that is, that the escapement is always 0. This is true for both
/// the horizontal and vertical measurements of the text. The application must convert it explicitly.
/// </devdoc>
public Size MeasureText(string text, WindowsFont font, Size proposedSize, IntTextFormatFlags flags)
{
Debug.Assert( ((uint)flags & GdiUnsupportedFlagMask) == 0, "Some custom flags were left over and are not GDI compliant!" );
if (string.IsNullOrEmpty(text))
{
return Size.Empty;
}
//
// DrawText returns a rectangle useful for aligning, but not guaranteed to encompass all
// pixels (its not a FitBlackBox, if the text is italicized, it will overhang on the right.)
// So we need to account for this.
//
IntNativeMethods.DRAWTEXTPARAMS dtparams = null;
#if OPTIMIZED_MEASUREMENTDC
// use the cache if we've got it
if (MeasurementDCInfo.IsMeasurementDC(this.DeviceContext))
{
dtparams = MeasurementDCInfo.GetTextMargins(this,font);
}
#endif
if (dtparams == null)
{
dtparams = GetTextMargins(font);
}
//
// If Width / Height are < 0, we need to make them larger or DrawText will return
// an unbounded measurement when we actually trying to make it very narrow.
//
int minWidth = 1 + dtparams.iLeftMargin + dtparams.iRightMargin;
if( proposedSize.Width <= minWidth ) {
proposedSize.Width = minWidth;
}
if( proposedSize.Height <= 0 ) {
proposedSize.Height = 1;
}
IntNativeMethods.RECT rect = IntNativeMethods.RECT.FromXYWH(0, 0, proposedSize.Width, proposedSize.Height);
HandleRef hdc = new HandleRef(null, this.dc.Hdc);
if (font != null)
{
this.dc.SelectFont(font);
}
// If proposedSize.Height >= MaxSize.Height it is assumed bounds needed. If flags contain SingleLine and
// VerticalCenter or Bottom options, DrawTextEx does not bind the rectangle to the actual text height since
// it assumes the text is to be vertically aligned; we need to clear the VerticalCenter and Bottom flags to
// get the actual text bounds.
if (proposedSize.Height >= MaxSize.Height && (flags & IntTextFormatFlags.SingleLine) != 0)
{
// Clear vertical-alignment flags.
flags &= ~(IntTextFormatFlags.Bottom | IntTextFormatFlags.VerticalCenter);
}
if (proposedSize.Width == MaxSize.Width)
{
// PERF: No constraining width means no word break.
// in this case, we dont care about word wrapping - there should be enough room to fit it all
flags &= ~(IntTextFormatFlags.WordBreak);
}
flags |= IntTextFormatFlags.CalculateRectangle;
IntUnsafeNativeMethods.DrawTextEx(hdc, text, ref rect, (int)flags, dtparams);
/* No need to restore previous objects into the dc (see comments on top of the class).
*
if( hOldFont != IntPtr.Zero )
{
this.dc.SelectObject(hOldFont);
}
*/
return rect.Size;
}
public void DrawText(string text, WindowsFont font, Rectangle bounds, Color foreColor, Color backColor, IntTextFormatFlags flags)
{
if (!string.IsNullOrEmpty(text) && (foreColor != Color.Transparent))
{
HandleRef hdc = new HandleRef(this.dc, this.dc.Hdc);
if (this.dc.TextAlignment != DeviceContextTextAlignment.Top)
{
this.dc.SetTextAlignment(DeviceContextTextAlignment.Top);
}
if (!foreColor.IsEmpty && (foreColor != this.dc.TextColor))
{
this.dc.SetTextColor(foreColor);
}
if (font != null)
{
this.dc.SelectFont(font);
}
DeviceContextBackgroundMode newMode = (backColor.IsEmpty || (backColor == Color.Transparent)) ? DeviceContextBackgroundMode.Transparent : DeviceContextBackgroundMode.Opaque;
if (this.dc.BackgroundMode != newMode)
{
this.dc.SetBackgroundMode(newMode);
}
if ((newMode != DeviceContextBackgroundMode.Transparent) && (backColor != this.dc.BackgroundColor))
{
this.dc.SetBackgroundColor(backColor);
}
IntNativeMethods.DRAWTEXTPARAMS textMargins = this.GetTextMargins(font);
bounds = AdjustForVerticalAlignment(hdc, text, bounds, flags, textMargins);
if (bounds.Width == MaxSize.Width)
{
bounds.Width -= bounds.X;
}
if (bounds.Height == MaxSize.Height)
{
bounds.Height -= bounds.Y;
}
IntNativeMethods.RECT lpRect = new IntNativeMethods.RECT(bounds);
IntUnsafeNativeMethods.DrawTextEx(hdc, text, ref lpRect, (int)flags, textMargins);
}
}
private void DrawGroupBox(PaintEventArgs e)
{
Graphics graphics = e.Graphics;
Rectangle textRectangle = ClientRectangle; // Max text bounding box passed to drawing methods to support RTL.
int textOffset = 8; // Offset from the left bound.
Color backColor = DisabledColor;
Pen light = new Pen(ControlPaint.Light(backColor, 1.0f));
Pen dark = new Pen(ControlPaint.Dark(backColor, 0f));
Size textSize;
textRectangle.X += textOffset;
textRectangle.Width -= 2 * textOffset;
try {
if (UseCompatibleTextRendering)
{
using (Brush textBrush = new SolidBrush(ForeColor)){
using (StringFormat format = new StringFormat()){
format.HotkeyPrefix = ShowKeyboardCues ? System.Drawing.Text.HotkeyPrefix.Show : System.Drawing.Text.HotkeyPrefix.Hide;
// Adjust string format for Rtl controls
if (RightToLeft == RightToLeft.Yes)
{
format.FormatFlags |= StringFormatFlags.DirectionRightToLeft;
}
textSize = Size.Ceiling(graphics.MeasureString(Text, Font, textRectangle.Width, format));
if (Enabled)
{
graphics.DrawString(Text, Font, textBrush, textRectangle, format);
}
else
{
ControlPaint.DrawStringDisabled(graphics, Text, Font, backColor, textRectangle, format);
}
}
}
}
else
{
using (WindowsGraphics wg = WindowsGraphics.FromGraphics(graphics)){
IntTextFormatFlags flags = IntTextFormatFlags.WordBreak | IntTextFormatFlags.TextBoxControl;
if (!ShowKeyboardCues)
{
flags |= IntTextFormatFlags.HidePrefix;
}
if (RightToLeft == RightToLeft.Yes)
{
flags |= IntTextFormatFlags.RightToLeft;
flags |= IntTextFormatFlags.Right;
}
using (WindowsFont wfont = WindowsGraphicsCacheManager.GetWindowsFont(this.Font)) {
textSize = wg.MeasureText(Text, wfont, new Size(textRectangle.Width, int.MaxValue), flags);
if (Enabled)
{
wg.DrawText(Text, wfont, textRectangle, ForeColor, flags);
}
else
{
ControlPaint.DrawStringDisabled(wg, Text, Font, backColor, textRectangle, ((TextFormatFlags)flags));
}
}
}
}
int textLeft = textOffset; // Left side of binding box (independent on RTL).
if (RightToLeft == RightToLeft.Yes)
{
textLeft += textRectangle.Width - textSize.Width;
}
// Math.Min to assure we paint at least a small line.
int textRight = Math.Min(textLeft + textSize.Width, Width - 6);
int boxTop = FontHeight / 2;
if (SystemInformation.HighContrast && AccessibilityImprovements.Level1)
{
Color boxColor;
if (Enabled)
{
boxColor = ForeColor;
}
else
{
boxColor = SystemColors.GrayText;
}
bool needToDispose = !boxColor.IsSystemColor;
Pen boxPen = null;
try {
if (needToDispose)
{
boxPen = new Pen(boxColor);
}
else
{
boxPen = SystemPens.FromSystemColor(boxColor);
}
// left
graphics.DrawLine(boxPen, 0, boxTop, 0, Height);
//bottom
graphics.DrawLine(boxPen, 0, Height - 1, Width, Height - 1);
//top-left
graphics.DrawLine(boxPen, 0, boxTop, textLeft, boxTop);
//top-right
graphics.DrawLine(boxPen, textRight, boxTop, Width - 1, boxTop);
//right
graphics.DrawLine(boxPen, Width - 1, boxTop, Width - 1, Height - 1);
}
finally {
if (needToDispose && boxPen != null)
{
boxPen.Dispose();
}
}
}
else
{
// left
graphics.DrawLine(light, 1, boxTop, 1, Height - 1);
graphics.DrawLine(dark, 0, boxTop, 0, Height - 2);
// bottom
graphics.DrawLine(light, 0, Height - 1, Width, Height - 1);
graphics.DrawLine(dark, 0, Height - 2, Width - 1, Height - 2);
// top-left
graphics.DrawLine(dark, 0, boxTop - 1, textLeft, boxTop - 1);
graphics.DrawLine(light, 1, boxTop, textLeft, boxTop);
// top-right
graphics.DrawLine(dark, textRight, boxTop - 1, Width - 2, boxTop - 1);
graphics.DrawLine(light, textRight, boxTop, Width - 1, boxTop);
// right
graphics.DrawLine(light, Width - 1, boxTop - 1, Width - 1, Height - 1);
graphics.DrawLine(dark, Width - 2, boxTop, Width - 2, Height - 2);
}
}
finally {
light.Dispose();
dark.Dispose();
}
}
/// <devdoc>
/// <para>
/// The GDI DrawText does not do multiline alignment when IntTextFormatFlags.SingleLine is not set. This
/// adjustment is to workaround that limitation. We don't want to duplicate SelectObject calls here,
/// so put your Font in the dc before calling this.
///
/// AdjustForVerticalAlignment is only used when the text is multiline and it fits inside the bounds passed in.
/// In that case we want the horizontal center of the multiline text to be at the horizontal center of the bounds.
///
/// If the text is multiline and it does not fit inside the bounds passed in, then return the bounds that were passed in.
/// This way we paint the top of the text at the top of the bounds passed in.
/// </para>
/// </devdoc>
public static Rectangle AdjustForVerticalAlignment(HandleRef hdc, string text, Rectangle bounds, IntTextFormatFlags flags, IntNativeMethods.DRAWTEXTPARAMS dtparams)
{
Debug.Assert(((uint)flags & GdiUnsupportedFlagMask) == 0, "Some custom flags were left over and are not GDI compliant!");
// Ok if any Top (Cannot test IntTextFormatFlags.Top because it is 0), single line text or measuring text.
bool isTop = (flags & IntTextFormatFlags.Bottom) == 0 && (flags & IntTextFormatFlags.VerticalCenter) == 0;
if (isTop || ((flags & IntTextFormatFlags.SingleLine) != 0) || ((flags & IntTextFormatFlags.CalculateRectangle) != 0))
{
return(bounds);
}
IntNativeMethods.RECT rect = new IntNativeMethods.RECT(bounds);
// Get the text bounds.
flags |= IntTextFormatFlags.CalculateRectangle;
int textHeight = IntUnsafeNativeMethods.DrawTextEx(hdc, text, ref rect, (int)flags, dtparams);
// if the text does not fit inside the bounds then return the bounds that were passed in
if (textHeight > bounds.Height)
{
return(bounds);
}
Rectangle adjustedBounds = bounds;
if ((flags & IntTextFormatFlags.VerticalCenter) != 0) // Middle
{
adjustedBounds.Y = adjustedBounds.Top + adjustedBounds.Height / 2 - textHeight / 2;
}
else // Bottom.
{
adjustedBounds.Y = adjustedBounds.Bottom - textHeight;
}
return(adjustedBounds);
}
/// <devdoc>
/// Draws the text in the given bounds, using the given Font, foreColor and backColor, and according to the specified
/// TextFormatFlags flags.
/// If font is null, the font currently selected in the hdc is used.
/// If foreColor and/or backColor are Color.Empty, the hdc current text and/or background color are used.
/// </devdoc>
public void DrawText(string text, WindowsFont font, Rectangle bounds, Color foreColor, Color backColor, IntTextFormatFlags flags)
{
if (string.IsNullOrEmpty(text) || foreColor == Color.Transparent)
{
return;
}
Debug.Assert(((uint)flags & GdiUnsupportedFlagMask) == 0, "Some custom flags were left over and are not GDI compliant!");
Debug.Assert((flags & IntTextFormatFlags.CalculateRectangle) == 0, "CalculateRectangle flag is set, text won't be drawn");
HandleRef hdc = new HandleRef(this.dc, this.dc.Hdc);
// DrawText requires default text alignment.
if (this.dc.TextAlignment != DeviceContextTextAlignment.Default)
{
this.dc.SetTextAlignment(DeviceContextTextAlignment.Default);
}
// color empty means use the one currently selected in the dc.
if (!foreColor.IsEmpty && foreColor != this.dc.TextColor)
{
this.dc.SetTextColor(foreColor);
}
if (font != null)
{
this.dc.SelectFont(font);
}
DeviceContextBackgroundMode newBackGndMode = (backColor.IsEmpty || backColor == Color.Transparent) ?
DeviceContextBackgroundMode.Transparent :
DeviceContextBackgroundMode.Opaque;
if (this.dc.BackgroundMode != newBackGndMode)
{
this.dc.SetBackgroundMode(newBackGndMode);
}
if (newBackGndMode != DeviceContextBackgroundMode.Transparent && backColor != this.dc.BackgroundColor)
{
this.dc.SetBackgroundColor(backColor);
}
IntNativeMethods.DRAWTEXTPARAMS dtparams = GetTextMargins(font);
bounds = AdjustForVerticalAlignment(hdc, text, bounds, flags, dtparams);
// Adjust unbounded rect to avoid overflow since Rectangle ctr does not do param validation.
if (bounds.Width == MaxSize.Width)
{
bounds.Width = bounds.Width - bounds.X;
}
if (bounds.Height == MaxSize.Height)
{
bounds.Height = bounds.Height - bounds.Y;
}
IntNativeMethods.RECT rect = new IntNativeMethods.RECT(bounds);
IntUnsafeNativeMethods.DrawTextEx(hdc, text, ref rect, (int)flags, dtparams);
/* No need to restore previous objects into the dc (see comments on top of the class).
*
* if (hOldFont != IntPtr.Zero)
* {
* IntUnsafeNativeMethods.SelectObject(hdc, new HandleRef( null, hOldFont));
* }
*
* if( foreColor != textColor )
* {
* this.dc.SetTextColor(textColor);
* }
*
* if( backColor != bkColor )
* {
* this.dc.SetBackgroundColor(bkColor);
* }
*
* if( bckMode != newMode )
* {
* this.dc.SetBackgroundMode(bckMode);
* }
*
* if( align != DeviceContextTextAlignment.Default )
* {
* // Default text alignment required by DrewText.
* this.dc.SetTextAlignment(align);
* }
*/
}
private void DrawGroupBox(PaintEventArgs e)
{
Graphics graphics = e.Graphics;
Rectangle clientRectangle = base.ClientRectangle;
int num = 8;
Color disabledColor = SystemColors.Control; // base.DisabledColor;
//Pen pen = new Pen(ControlPaint.Light(disabledColor, 1f));
Pen pen = new Pen(Shared.ControlBorderBackColor == SystemColors.Control ? Color.Black : Shared.ControlBorderBackColor, 0.3f);
//Pen pen2 = new Pen(ControlPaint.Dark(disabledColor, 0f));
Pen pen2 = new Pen(Shared.ControlBorderBackColor == SystemColors.Control ? Color.Black : Shared.ControlBorderBackColor, 0f);
clientRectangle.X += num;
clientRectangle.Width -= 2 * num;
try
{
Size size;
int num2;
//if (this.UseCompatibleTextRendering)
//{
// using (Brush brush = new SolidBrush(this.ForeColor))
// {
// using (StringFormat format = new StringFormat())
// {
// format.HotkeyPrefix = this.ShowKeyboardCues ? HotkeyPrefix.Show : HotkeyPrefix.Hide;
// if (this.RightToLeft == RightToLeft.Yes)
// {
// format.FormatFlags |= StringFormatFlags.DirectionRightToLeft;
// }
// size = Size.Ceiling(graphics.MeasureString(this.Text, this.Font, clientRectangle.Width, format));
// if (base.Enabled)
// {
// graphics.DrawString(this.Text, this.Font, brush, clientRectangle, format);
// }
// else
// {
// ControlPaint.DrawStringDisabled(graphics, this.Text, this.Font, disabledColor, clientRectangle, format);
// }
// }
// goto Label_01E7;
// }
//}
IntTextFormatFlags flags = IntTextFormatFlags.TextBoxControl | IntTextFormatFlags.WordBreak;
if (!this.ShowKeyboardCues)
{
flags |= IntTextFormatFlags.HidePrefix;
}
if (this.RightToLeft == RightToLeft.Yes)
{
flags |= IntTextFormatFlags.RightToLeft;
flags |= IntTextFormatFlags.Right;
}
Graphics graphics2 = e.Graphics;
size = graphics2.MeasureString(this.Text, this.Font).ToSize();
if (base.Enabled)
{
// graphics2.DrawString(this.Text, this.Font, new SolidBrush(Shared.ControlBorderBackColor == SystemColors.Control ? Color.Black : Shared.ControlBorderBackColor), 8, 0);
graphics2.DrawString(this.Text, this.Font, new SolidBrush(Shared.FontColor), 8, 0);
}
else
{
ControlPaint.DrawStringDisabled(graphics2, this.Text, this.Font, disabledColor, clientRectangle, (TextFormatFlags)flags);
}
Label_01E7:
num2 = num;
if (this.RightToLeft == RightToLeft.Yes)
{
num2 += size.Width;
}
int num3 = Math.Min((int)(num2 + size.Width), (int)(base.Width - 6));
int num4 = base.FontHeight / 2;
graphics.DrawLine(pen, 1, num4, 1, base.Height - 1);
//graphics.DrawLine(pen2, 0, num4, 0, base.Height - 2);
graphics.DrawLine(pen, 1, base.Height - 1, base.Width - 1, base.Height - 1);
//graphics.DrawLine(pen2, 0, base.Height - 2, base.Width - 1, base.Height - 2);
graphics.DrawLine(pen2, 1, num4 - 1, num2 - 1, num4 - 1);
////graphics.DrawLine(pen, 1, num4, num2, num4);
graphics.DrawLine(pen2, num3, num4 - 1, base.Width - 2, num4 - 1);
////graphics.DrawLine(pen, num3, num4, base.Width - 1, num4);
graphics.DrawLine(pen, (int)(base.Width - 1), (int)(num4 - 1), (int)(base.Width - 1), (int)(base.Height - 1));
////graphics.DrawLine(pen2, base.Width - 2, num4, base.Width - 2, base.Height - 2);
}
finally
{
pen.Dispose();
pen2.Dispose();
}
}
public Size MeasureText(string text, WindowsFont font, Size proposedSize, IntTextFormatFlags flags)
{
if (string.IsNullOrEmpty(text))
{
return Size.Empty;
}
IntNativeMethods.DRAWTEXTPARAMS lpDTParams = null;
if (MeasurementDCInfo.IsMeasurementDC(this.DeviceContext))
{
lpDTParams = MeasurementDCInfo.GetTextMargins(this, font);
}
if (lpDTParams == null)
{
lpDTParams = this.GetTextMargins(font);
}
int num = (1 + lpDTParams.iLeftMargin) + lpDTParams.iRightMargin;
if (proposedSize.Width <= num)
{
proposedSize.Width = num;
}
if (proposedSize.Height <= 0)
{
proposedSize.Height = 1;
}
IntNativeMethods.RECT lpRect = IntNativeMethods.RECT.FromXYWH(0, 0, proposedSize.Width, proposedSize.Height);
HandleRef hDC = new HandleRef(null, this.dc.Hdc);
if (font != null)
{
this.dc.SelectFont(font);
}
if ((proposedSize.Height >= MaxSize.Height) && ((flags & IntTextFormatFlags.SingleLine) != IntTextFormatFlags.Default))
{
flags &= ~(IntTextFormatFlags.Bottom | IntTextFormatFlags.VerticalCenter);
}
if (proposedSize.Width == MaxSize.Width)
{
flags &= ~IntTextFormatFlags.WordBreak;
}
flags |= IntTextFormatFlags.CalculateRectangle;
IntUnsafeNativeMethods.DrawTextEx(hDC, text, ref lpRect, (int) flags, lpDTParams);
return lpRect.Size;
}
public void DrawText(string text, WindowsFont font, Rectangle bounds, Color foreColor, Color backColor, IntTextFormatFlags flags)
{
if (!string.IsNullOrEmpty(text) && (foreColor != Color.Transparent))
{
HandleRef hdc = new HandleRef(this.dc, this.dc.Hdc);
if (this.dc.TextAlignment != DeviceContextTextAlignment.Top)
{
this.dc.SetTextAlignment(DeviceContextTextAlignment.Top);
}
if (!foreColor.IsEmpty && (foreColor != this.dc.TextColor))
{
this.dc.SetTextColor(foreColor);
}
if (font != null)
{
this.dc.SelectFont(font);
}
DeviceContextBackgroundMode newMode = (backColor.IsEmpty || (backColor == Color.Transparent)) ? DeviceContextBackgroundMode.Transparent : DeviceContextBackgroundMode.Opaque;
if (this.dc.BackgroundMode != newMode)
{
this.dc.SetBackgroundMode(newMode);
}
if ((newMode != DeviceContextBackgroundMode.Transparent) && (backColor != this.dc.BackgroundColor))
{
this.dc.SetBackgroundColor(backColor);
}
IntNativeMethods.DRAWTEXTPARAMS textMargins = this.GetTextMargins(font);
bounds = AdjustForVerticalAlignment(hdc, text, bounds, flags, textMargins);
if (bounds.Width == MaxSize.Width)
{
bounds.Width -= bounds.X;
}
if (bounds.Height == MaxSize.Height)
{
bounds.Height -= bounds.Y;
}
IntNativeMethods.RECT lpRect = new IntNativeMethods.RECT(bounds);
IntUnsafeNativeMethods.DrawTextEx(hdc, text, ref lpRect, (int) flags, textMargins);
}
}
public void DrawText(string text, WindowsFont font, Point pt, Color foreColor, Color backColor, IntTextFormatFlags flags)
{
Rectangle bounds = new Rectangle(pt.X, pt.Y, 0x7fffffff, 0x7fffffff);
this.DrawText(text, font, bounds, foreColor, backColor, flags);
}
public static Rectangle AdjustForVerticalAlignment(HandleRef hdc, string text, Rectangle bounds, IntTextFormatFlags flags, IntNativeMethods.DRAWTEXTPARAMS dtparams)
{
if (((((flags & IntTextFormatFlags.Bottom) == IntTextFormatFlags.Default) && ((flags & IntTextFormatFlags.VerticalCenter) == IntTextFormatFlags.Default)) || ((flags & IntTextFormatFlags.SingleLine) != IntTextFormatFlags.Default)) || ((flags & IntTextFormatFlags.CalculateRectangle) != IntTextFormatFlags.Default))
{
return(bounds);
}
IntNativeMethods.RECT lpRect = new IntNativeMethods.RECT(bounds);
flags |= IntTextFormatFlags.CalculateRectangle;
int num = IntUnsafeNativeMethods.DrawTextEx(hdc, text, ref lpRect, (int)flags, dtparams);
if (num > bounds.Height)
{
return(bounds);
}
Rectangle rectangle = bounds;
if ((flags & IntTextFormatFlags.VerticalCenter) != IntTextFormatFlags.Default)
{
rectangle.Y = (rectangle.Top + (rectangle.Height / 2)) - (num / 2);
return(rectangle);
}
rectangle.Y = rectangle.Bottom - num;
return(rectangle);
}
/// <devdoc>
/// Draws the text at the specified point, using the given Font, foreColor and backColor, and according
/// to the specified flags.
/// </devdoc>
public void DrawText(string text, WindowsFont font, Point pt, Color foreColor, Color backColor, IntTextFormatFlags flags)
{
Rectangle bounds = new Rectangle(pt.X, pt.Y, int.MaxValue, int.MaxValue);
DrawText(text, font, bounds, foreColor, backColor, flags);
}
/// <devdoc>
/// Draws the text in the given bounds, using the given Font and foreColor, and according to the specified flags.
/// </devdoc>
public void DrawText(string text, WindowsFont font, Rectangle bounds, Color color, IntTextFormatFlags flags)
{
DrawText(text, font, bounds, color, Color.Empty, flags);
}
/// <devdoc>
/// Draws the text at the specified point, using the given Font and foreColor, and according to the
/// specified flags.
/// </devdoc>
public void DrawText(string text, WindowsFont font, Point pt, Color foreColor, IntTextFormatFlags flags)
{
DrawText(text, font, pt, foreColor, Color.Empty, flags);
}
/// <devdoc>
/// Returns the Size in logical units of the given text using the given Font, and according to the formatting flags.
/// The proposed size is used to create a bounding rectangle as follows:
/// - If there are multiple lines of text, DrawText uses the width of the rectangle pointed to by
/// the lpRect parameter and extends the base of the rectangle to bound the last line of text.
/// - If the largest word is wider than the rectangle, the width is expanded.
/// - If the text is less than the width of the rectangle, the width is reduced.
/// - If there is only one line of text, DrawText modifies the right side of the rectangle so that
/// it bounds the last character in the line.
/// If the font is null, the hdc's current font will be used.
///
/// Note for vertical fonts (if ever supported): DrawTextEx uses GetTextExtentPoint32 for measuring the text and this
/// function has the following limitation (from MSDN):
/// - This function assumes that the text is horizontal, that is, that the escapement is always 0. This is true for both
/// the horizontal and vertical measurements of the text. The application must convert it explicitly.
/// </devdoc>
public Size MeasureText(string text, WindowsFont font, Size proposedSize, IntTextFormatFlags flags)
{
Debug.Assert(((uint)flags & GdiUnsupportedFlagMask) == 0, "Some custom flags were left over and are not GDI compliant!");
if (string.IsNullOrEmpty(text))
{
return(Size.Empty);
}
//
// DrawText returns a rectangle useful for aligning, but not guaranteed to encompass all
// pixels (its not a FitBlackBox, if the text is italicized, it will overhang on the right.)
// So we need to account for this.
//
IntNativeMethods.DRAWTEXTPARAMS dtparams = null;
#if OPTIMIZED_MEASUREMENTDC
// use the cache if we've got it
if (MeasurementDCInfo.IsMeasurementDC(this.DeviceContext))
{
dtparams = MeasurementDCInfo.GetTextMargins(this, font);
}
#endif
if (dtparams == null)
{
dtparams = GetTextMargins(font);
}
//
// If Width / Height are < 0, we need to make them larger or DrawText will return
// an unbounded measurement when we actually trying to make it very narrow.
//
int minWidth = 1 + dtparams.iLeftMargin + dtparams.iRightMargin;
if (proposedSize.Width <= minWidth)
{
proposedSize.Width = minWidth;
}
if (proposedSize.Height <= 0)
{
proposedSize.Height = 1;
}
IntNativeMethods.RECT rect = IntNativeMethods.RECT.FromXYWH(0, 0, proposedSize.Width, proposedSize.Height);
HandleRef hdc = new HandleRef(null, this.dc.Hdc);
if (font != null)
{
this.dc.SelectFont(font);
}
// If proposedSize.Height >= MaxSize.Height it is assumed bounds needed. If flags contain SingleLine and
// VerticalCenter or Bottom options, DrawTextEx does not bind the rectangle to the actual text height since
// it assumes the text is to be vertically aligned; we need to clear the VerticalCenter and Bottom flags to
// get the actual text bounds.
if (proposedSize.Height >= MaxSize.Height && (flags & IntTextFormatFlags.SingleLine) != 0)
{
// Clear vertical-alignment flags.
flags &= ~(IntTextFormatFlags.Bottom | IntTextFormatFlags.VerticalCenter);
}
if (proposedSize.Width == MaxSize.Width)
{
// PERF: No constraining width means no word break.
// in this case, we dont care about word wrapping - there should be enough room to fit it all
flags &= ~(IntTextFormatFlags.WordBreak);
}
flags |= IntTextFormatFlags.CalculateRectangle;
IntUnsafeNativeMethods.DrawTextEx(hdc, text, ref rect, (int)flags, dtparams);
/* No need to restore previous objects into the dc (see comments on top of the class).
*
* if( hOldFont != IntPtr.Zero )
* {
* this.dc.SelectObject(hOldFont);
* }
*/
return(rect.Size);
}
/// <devdoc>
/// Draws the text at the specified point, using the given Font, foreColor and backColor, and according
/// to the specified flags.
/// </devdoc>
public void DrawText(string text, WindowsFont font, Point pt, Color foreColor, Color backColor, IntTextFormatFlags flags)
{
Rectangle bounds = new Rectangle( pt.X, pt.Y, Int32.MaxValue, Int32.MaxValue );
DrawText( text, font, bounds, foreColor, backColor, flags );
}
/// <devdoc>
/// Draws the text in the given bounds, using the given Font and foreColor, and according to the specified flags.
/// </devdoc>
public void DrawText(string text, WindowsFont font, Rectangle bounds, Color color, IntTextFormatFlags flags)
{
DrawText( text, font, bounds, color, Color.Empty, flags );
}
/// <devdoc>
/// Draws the text in the given bounds, using the given Font, foreColor and backColor, and according to the specified
/// TextFormatFlags flags.
/// If font is null, the font currently selected in the hdc is used.
/// If foreColor and/or backColor are Color.Empty, the hdc current text and/or background color are used.
/// </devdoc>
public void DrawText(string text, WindowsFont font, Rectangle bounds, Color foreColor, Color backColor, IntTextFormatFlags flags)
{
if (string.IsNullOrEmpty(text) || foreColor == Color.Transparent)
{
return;
}
Debug.Assert( ((uint)flags & GdiUnsupportedFlagMask) == 0, "Some custom flags were left over and are not GDI compliant!" );
Debug.Assert( (flags & IntTextFormatFlags.CalculateRectangle) == 0, "CalculateRectangle flag is set, text won't be drawn" );
HandleRef hdc = new HandleRef( this.dc, this.dc.Hdc);
// DrawText requires default text alignment.
if( this.dc.TextAlignment != DeviceContextTextAlignment.Default )
{
this.dc.SetTextAlignment(DeviceContextTextAlignment.Default );
}
// color empty means use the one currently selected in the dc.
if( !foreColor.IsEmpty && foreColor != this.dc.TextColor)
{
this.dc.SetTextColor(foreColor);
}
if (font != null)
{
this.dc.SelectFont(font);
}
DeviceContextBackgroundMode newBackGndMode = (backColor.IsEmpty || backColor == Color.Transparent) ?
DeviceContextBackgroundMode.Transparent :
DeviceContextBackgroundMode.Opaque;
if( this.dc.BackgroundMode != newBackGndMode )
{
this.dc.SetBackgroundMode( newBackGndMode );
}
if( newBackGndMode != DeviceContextBackgroundMode.Transparent && backColor != this.dc.BackgroundColor )
{
this.dc.SetBackgroundColor( backColor );
}
IntNativeMethods.DRAWTEXTPARAMS dtparams = GetTextMargins(font);
bounds = AdjustForVerticalAlignment(hdc, text, bounds, flags, dtparams);
// Adjust unbounded rect to avoid overflow since Rectangle ctr does not do param validation.
if( bounds.Width == MaxSize.Width )
{
bounds.Width = bounds.Width - bounds.X;
}
if( bounds.Height == MaxSize.Height )
{
bounds.Height = bounds.Height - bounds.Y;
}
IntNativeMethods.RECT rect = new IntNativeMethods.RECT(bounds);
IntUnsafeNativeMethods.DrawTextEx(hdc, text, ref rect, (int) flags, dtparams);
/* No need to restore previous objects into the dc (see comments on top of the class).
*
if (hOldFont != IntPtr.Zero)
{
IntUnsafeNativeMethods.SelectObject(hdc, new HandleRef( null, hOldFont));
}
if( foreColor != textColor )
{
this.dc.SetTextColor(textColor);
}
if( backColor != bkColor )
{
this.dc.SetBackgroundColor(bkColor);
}
if( bckMode != newMode )
{
this.dc.SetBackgroundMode(bckMode);
}
if( align != DeviceContextTextAlignment.Default )
{
// Default text alignment required by DrewText.
this.dc.SetTextAlignment(align);
}
*/
}
private void DrawGroupBox(PaintEventArgs e)
{
Graphics graphics = e.Graphics;
Rectangle clientRectangle = base.ClientRectangle;
int num = 8;
Color disabledColor = base.DisabledColor;
Pen pen = new Pen(ControlPaint.Light(disabledColor, 1f));
Pen pen2 = new Pen(ControlPaint.Dark(disabledColor, 0f));
clientRectangle.X += num;
clientRectangle.Width -= 2 * num;
try
{
Size size;
int num2;
if (this.UseCompatibleTextRendering)
{
using (Brush brush = new SolidBrush(this.ForeColor))
{
using (StringFormat format = new StringFormat())
{
format.HotkeyPrefix = this.ShowKeyboardCues ? HotkeyPrefix.Show : HotkeyPrefix.Hide;
if (this.RightToLeft == RightToLeft.Yes)
{
format.FormatFlags |= StringFormatFlags.DirectionRightToLeft;
}
size = Size.Ceiling(graphics.MeasureString(this.Text, this.Font, clientRectangle.Width, format));
if (base.Enabled)
{
graphics.DrawString(this.Text, this.Font, brush, clientRectangle, format);
}
else
{
ControlPaint.DrawStringDisabled(graphics, this.Text, this.Font, disabledColor, clientRectangle, format);
}
}
goto Label_01E7;
}
}
using (WindowsGraphics graphics2 = WindowsGraphics.FromGraphics(graphics))
{
IntTextFormatFlags flags = IntTextFormatFlags.TextBoxControl | IntTextFormatFlags.WordBreak;
if (!this.ShowKeyboardCues)
{
flags |= IntTextFormatFlags.HidePrefix;
}
if (this.RightToLeft == RightToLeft.Yes)
{
flags |= IntTextFormatFlags.RightToLeft;
flags |= IntTextFormatFlags.Right;
}
using (WindowsFont font = WindowsGraphicsCacheManager.GetWindowsFont(this.Font))
{
size = graphics2.MeasureText(this.Text, font, new Size(clientRectangle.Width, 0x7fffffff), flags);
if (base.Enabled)
{
graphics2.DrawText(this.Text, font, clientRectangle, this.ForeColor, flags);
}
else
{
ControlPaint.DrawStringDisabled(graphics2, this.Text, this.Font, disabledColor, clientRectangle, (TextFormatFlags)flags);
}
}
}
Label_01E7:
num2 = num;
if (this.RightToLeft == RightToLeft.Yes)
{
num2 += clientRectangle.Width - size.Width;
}
int num3 = Math.Min((int)(num2 + size.Width), (int)(base.Width - 6));
int num4 = base.FontHeight / 2;
graphics.DrawLine(pen, 1, num4, 1, base.Height - 1);
graphics.DrawLine(pen2, 0, num4, 0, base.Height - 2);
graphics.DrawLine(pen, 0, base.Height - 1, base.Width, base.Height - 1);
graphics.DrawLine(pen2, 0, base.Height - 2, base.Width - 1, base.Height - 2);
graphics.DrawLine(pen2, 0, num4 - 1, num2, num4 - 1);
graphics.DrawLine(pen, 1, num4, num2, num4);
graphics.DrawLine(pen2, num3, num4 - 1, base.Width - 2, num4 - 1);
graphics.DrawLine(pen, num3, num4, base.Width - 1, num4);
graphics.DrawLine(pen, (int)(base.Width - 1), (int)(num4 - 1), (int)(base.Width - 1), (int)(base.Height - 1));
graphics.DrawLine(pen2, base.Width - 2, num4, base.Width - 2, base.Height - 2);
}
finally
{
pen.Dispose();
pen2.Dispose();
}
}
public void DrawText(string text, WindowsFont font, Point pt, Color foreColor, Color backColor, IntTextFormatFlags flags)
{
Rectangle bounds = new Rectangle(pt.X, pt.Y, 0x7fffffff, 0x7fffffff);
this.DrawText(text, font, bounds, foreColor, backColor, flags);
}