public static Size GetTextSize(Graphics graphics, string text, Font font, ref Rectangle rc, DrawTextFormatFlags drawFlags)
{
IntPtr hdc = IntPtr.Zero;
if ( graphics != null )
{
// Get device context from the graphics passed in
hdc = graphics.GetHdc();
}
else
{
// Get screen device context
hdc = WindowsAPI.GetDC(IntPtr.Zero);
}
IntPtr fontHandle = font.ToHfont();
IntPtr currentFontHandle = WindowsAPI.SelectObject(hdc, fontHandle);
Win32.RECT rect = new Win32.RECT();
rect.left = rc.Left;
rect.right = rc.Right;
rect.top = rc.Top;
rect.bottom = rc.Bottom;
WindowsAPI.DrawText(hdc, text, text.Length, ref rect, (int)drawFlags);
WindowsAPI.SelectObject(hdc, currentFontHandle);
WindowsAPI.DeleteObject(fontHandle);
if ( graphics != null )
graphics.ReleaseHdc(hdc);
else
WindowsAPI.ReleaseDC(IntPtr.Zero, hdc);
return new Size(rect.right - rect.left, rect.bottom - rect.top);
}
private DrawTextFormatFlags GetTextFormatFlags()
{
DrawTextFormatFlags flags = 0;
if (!_useMnemonic)
{
flags |= DrawTextFormatFlags.DT_NOPREFIX;
}
if (_wordWrap)
{
flags |= DrawTextFormatFlags.DT_WORDBREAK;
}
if (_endEllipsis)
{
flags |= DrawTextFormatFlags.DT_END_ELLIPSIS | DrawTextFormatFlags.DT_SINGLELINE;
}
if (_textAlign != ContentAlignment.TopLeft)
{
flags |= DrawTextFormatFlags.DT_SINGLELINE;
}
switch (_textAlign)
{
case ContentAlignment.TopCenter:
flags |= DrawTextFormatFlags.DT_CENTER; break;
case ContentAlignment.TopRight:
flags |= DrawTextFormatFlags.DT_RIGHT; break;
case ContentAlignment.MiddleLeft:
flags |= DrawTextFormatFlags.DT_VCENTER; break;
case ContentAlignment.MiddleCenter:
flags |= DrawTextFormatFlags.DT_CENTER | DrawTextFormatFlags.DT_VCENTER; break;
case ContentAlignment.MiddleRight:
flags |= DrawTextFormatFlags.DT_VCENTER | DrawTextFormatFlags.DT_RIGHT; break;
case ContentAlignment.BottomLeft:
flags |= DrawTextFormatFlags.DT_BOTTOM; break;
case ContentAlignment.BottomCenter:
flags |= DrawTextFormatFlags.DT_BOTTOM | DrawTextFormatFlags.DT_CENTER; break;
case ContentAlignment.BottomRight:
flags |= DrawTextFormatFlags.DT_BOTTOM | DrawTextFormatFlags.DT_RIGHT; break;
}
return(flags);
}
public static Size GetTextSize( Graphics g, string text, Font font, ref Rectangle rc, DrawTextFormatFlags drawFlags )
{
IntPtr hdc = GetGraphicsHDC( g );
IntPtr hFont = font.ToHfont();
IntPtr hOldFont = WindowsAPI.SelectObject( hdc, hFont );
Win32.RECT rect = new Win32.RECT();
rect.left = rc.Left;
rect.right = rc.Right;
rect.top = rc.Top;
rect.bottom = rc.Bottom;
WindowsAPI.DrawText( hdc, text, text.Length, ref rect, (int)drawFlags );
WindowsAPI.SelectObject( hdc, hOldFont );
WindowsAPI.DeleteObject( hFont );
ReleaseGraphicHDC( g, hdc );
return ( Size )rect;
}
public static Size GetTextSize(Graphics graphics, string text, Font font, ref Rectangle rc, DrawTextFormatFlags drawFlags)
{
IntPtr hdc = IntPtr.Zero;
if (graphics != null)
{
// Get device context from the graphics passed in
hdc = graphics.GetHdc();
}
else
{
// Get screen device context
hdc = WindowsAPI.GetDC(IntPtr.Zero);
}
IntPtr fontHandle = font.ToHfont();
IntPtr currentFontHandle = WindowsAPI.SelectObject(hdc, fontHandle);
Win32.RECT rect = new Win32.RECT();
rect.left = rc.Left;
rect.right = rc.Right;
rect.top = rc.Top;
rect.bottom = rc.Bottom;
WindowsAPI.DrawText(hdc, text, text.Length, ref rect, (int)drawFlags);
WindowsAPI.SelectObject(hdc, currentFontHandle);
WindowsAPI.DeleteObject(fontHandle);
if (graphics != null)
{
graphics.ReleaseHdc(hdc);
}
else
{
WindowsAPI.ReleaseDC(IntPtr.Zero, hdc);
}
return(new Size(rect.right - rect.left, rect.bottom - rect.top));
}
public static Size GetTextSize(Graphics graphics, string text, Font font, ref Rectangle rc,
DrawTextFormatFlags drawFlags)
{
IntPtr hdc = graphics.GetHdc();
IntPtr fontHandle = font.ToHfont();
IntPtr currentFontHandle = WindowsAPI.SelectObject(hdc, fontHandle);
RECT rect = new RECT();
rect.left = rc.Left;
rect.right = rc.Right;
rect.top = rc.Top;
rect.bottom = rc.Bottom;
WindowsAPI.DrawText(hdc, text, text.Length, ref rect, (int) drawFlags);
WindowsAPI.SelectObject(hdc, currentFontHandle);
WindowsAPI.DeleteObject(fontHandle);
graphics.ReleaseHdc(hdc);
return new Size(rect.right - rect.left, rect.bottom - rect.top);
}
public int DrawText(Graphics g, string text, Font font, Color color, Rectangle rc, StringFormat format)
{
int height;
RectangleF rcClip = g.ClipBounds;
RECT rect = new RECT(rc.Left, rc.Top, rc.Right, rc.Bottom);
IntPtr hdc = g.GetHdc();
try
{
IntPtr clipRgn = Win32Declarations.CreateRectRgn(0, 0, 0, 0);
if (Win32Declarations.GetClipRgn(hdc, clipRgn) != 1)
{
Win32Declarations.DeleteObject(clipRgn);
clipRgn = IntPtr.Zero;
}
Win32Declarations.IntersectClipRect(hdc, (int)rcClip.Left, (int)rcClip.Top, (int)rcClip.Right, (int)rcClip.Bottom);
IntPtr hFont = _fontCache.GetHFont(font);
IntPtr oldFont = Win32Declarations.SelectObject(hdc, hFont);
int textColor = Win32Declarations.ColorToRGB(color);
int oldColor = Win32Declarations.SetTextColor(hdc, textColor);
BackgroundMode oldMode = Win32Declarations.SetBkMode(hdc, BackgroundMode.TRANSPARENT);
DrawTextFormatFlags flags = 0;
if ((format.FormatFlags & StringFormatFlags.NoWrap) != 0)
{
flags |= DrawTextFormatFlags.DT_SINGLELINE;
}
else
{
flags |= DrawTextFormatFlags.DT_WORDBREAK;
}
if (format.Alignment == StringAlignment.Center)
{
flags |= DrawTextFormatFlags.DT_CENTER;
}
else if (format.Alignment == StringAlignment.Far)
{
flags |= DrawTextFormatFlags.DT_RIGHT;
}
if (format.LineAlignment == StringAlignment.Center)
{
flags |= DrawTextFormatFlags.DT_VCENTER;
}
if (format.Trimming == StringTrimming.EllipsisCharacter)
{
flags |= DrawTextFormatFlags.DT_END_ELLIPSIS;
}
if (format.HotkeyPrefix == HotkeyPrefix.None)
{
flags |= DrawTextFormatFlags.DT_NOPREFIX;
}
height = Win32Declarations.DrawText(hdc, text, text.Length, ref rect, flags);
Win32Declarations.SelectClipRgn(hdc, clipRgn);
Win32Declarations.DeleteObject(clipRgn);
Win32Declarations.SetBkMode(hdc, oldMode);
Win32Declarations.SetTextColor(hdc, oldColor);
Win32Declarations.SelectObject(hdc, oldFont);
}
finally
{
g.ReleaseHdc(hdc);
}
return(height);
}
public extern static int DrawText(IntPtr hdc, string lpString, int nCount, ref RECT lpRect, DrawTextFormatFlags flags);
/// <summary>
/// Renders some text to a graphics device.
/// </summary>
/// <param name="graphics">Graphics device to render the text into.</param>
/// <param name="text">Text to render.</param>
/// <param name="rect">Bounding rectangle for the text to fit into.</param>
/// <param name="font">Font in which the text is rendered.</param>
/// <param name="color">Text color.</param>
/// <param name="dtf">Formatting flags.</param>
public static void DrawText(Graphics graphics, string text, Rectangle rect, Font font, Color color, DrawTextFormatFlags dtf)
{
IntPtr hdc = graphics.GetHdc();
try
{
// Font
IntPtr hFont = _fontCache.GetHFont(font);
IntPtr oldFont = Win32Declarations.SelectObject(hdc, hFont);
// Bounding rectangle
RECT rc = new RECT(rect.Left, rect.Top, rect.Right, rect.Bottom);
// Color
int textColor = Win32Declarations.ColorToRGB(color);
int oldColor = Win32Declarations.SetTextColor(hdc, textColor);
BackgroundMode oldMode = Win32Declarations.SetBkMode(hdc, BackgroundMode.TRANSPARENT);
// Render the text
Win32Declarations.DrawText(hdc, text, text.Length, ref rc, dtf);
// Do deinit
Win32Declarations.SetBkMode(hdc, oldMode);
Win32Declarations.SetTextColor(hdc, oldColor);
Win32Declarations.SelectObject(hdc, oldFont);
}
finally
{
graphics.ReleaseHdc(hdc);
}
}
/// <summary>
/// Calculates the rectangle needed for rendering the text string.
/// </summary>
/// <param name="control">Control to which the text will be rendered.
/// It's used for getting the device context and setting the initial text bounds
/// (the latter is ignored in the single-line case).</param>
/// <param name="text">Text to be rendered.</param>
/// <param name="font">Font in which the text will be rendered.</param>
/// <param name="dtf">Additional parameters that control rendering of the text</param>
/// <returns>Size of the text's bounding rectangle.</returns>
/// <remarks>The initial size is the control size.</remarks>
public static Size GetTextSize(Control control, string text, Font font, DrawTextFormatFlags dtf)
{
return(GetTextSize(control, text, font, new Size(Int32.MaxValue, control.Height), dtf));
}
/// <summary>
/// Calculates the rectangle needed for rendering the text string.
/// </summary>
/// <param name="control">Control to which the text will be rendered.
/// It's used for getting the device context and setting the initial text bounds
/// (the latter is ignored in the single-line case).</param>
/// <param name="text">Text to be rendered.</param>
/// <param name="font">Font in which the text will be rendered.</param>
/// <param name="bounds">Initial size that should be expanded to fit the text.</param>
/// <param name="dtf">Additional parameters that control rendering of the text.</param>
/// <returns>Size of the text's bounding rectangle.</returns>
public static Size GetTextSize(Control control, string text, Font font, Size bounds, DrawTextFormatFlags dtf)
{
using (Graphics g = control.CreateGraphics())
{
IntPtr hdc = g.GetHdc();
try
{
IntPtr hFont = _fontCache.GetHFont(font);
IntPtr oldFont = Win32Declarations.SelectObject(hdc, hFont);
RECT rc = new RECT(0, 0, bounds.Width, bounds.Height);
Win32Declarations.DrawText(hdc, text, text.Length, ref rc,
dtf | DrawTextFormatFlags.DT_CALCRECT);
int height = rc.bottom - rc.top;
//height += 1;
Size sz = new Size(rc.right - rc.left, height);
Win32Declarations.SelectObject(hdc, oldFont);
return(sz);
}
finally
{
g.ReleaseHdc(hdc);
}
}
}
public static int DrawText(IntPtr hdc, string lpString, int nCount, ref Rectangle lpRect,
DrawTextFormatFlags uFormat)
{
return(User32Methods.DrawText(hdc, lpString, nCount, ref lpRect, (uint)uFormat));
}
public extern static int DrawText(IntPtr hdc, string lpString, int nCount, ref RECT lpRect, DrawTextFormatFlags flags);
public static Size GetTextSize(Graphics g, string text, Font font, ref Rectangle rc, DrawTextFormatFlags drawFlags)
{
IntPtr hdc = GetGraphicsHDC(g);
IntPtr hFont = font.ToHfont();
IntPtr hOldFont = WindowsAPI.SelectObject(hdc, hFont);
NWin32.RECT rect = new NWin32.RECT();
rect.left = rc.Left;
rect.right = rc.Right;
rect.top = rc.Top;
rect.bottom = rc.Bottom;
WindowsAPI.DrawText(hdc, text, text.Length, ref rect, (int)drawFlags);
WindowsAPI.SelectObject(hdc, hOldFont);
WindowsAPI.DeleteObject(hFont);
ReleaseGraphicHDC(g, hdc);
return(( Size )rect);
}
