| private DrawCaption ( Graphics canvas ) : void | ||
| canvas | Graphics | |
| return | void | |
private void DrawCaption(Graphics canvas)
{
int brdWidth = 0;
int shadowWidth = 0;
Bitmap offScreenBmp = null;
Graphics offScreenDC = null;
Rectangle drawRect;
StringFormat format = null;
LinearGradientBrush brsh = null;
try
{
if (Bounds.Width == 0 || Bounds.Height == 0)
{
return;
}
if (menm_BorderStyle == HeaderPanelBorderStyles.None)
brdWidth = 0;
else if (menm_BorderStyle == HeaderPanelBorderStyles.Groove ||
menm_BorderStyle == HeaderPanelBorderStyles.Ridge)
brdWidth = 2;
else
brdWidth = DEFAULT_BORDER_WIDTH;
if (menm_BorderStyle == HeaderPanelBorderStyles.Shadow)
shadowWidth = DEFAULT_SHADOW_WIDTH;
format = new StringFormat();
format.FormatFlags = StringFormatFlags.NoWrap;
format.LineAlignment = StringAlignment.Center;
format.Alignment = StringAlignment.Near;
format.Trimming = StringTrimming.EllipsisCharacter;
//Console.WriteLine(" W: " + (Bounds.Width- ((2 * brdWidth) + shadowWidth)));
//Console.WriteLine(" W: " + Bounds.Width);
if (menm_CaptionPosition == HeaderPanelCaptionPositions.Bottom ||
menm_CaptionPosition == HeaderPanelCaptionPositions.Top)
offScreenBmp = new Bitmap(Bounds.Width - ((2 * brdWidth) + shadowWidth),
mint_CaptionHeight);
else
offScreenBmp = new Bitmap(Bounds.Height - ((2 * brdWidth) + shadowWidth),
mint_CaptionHeight);
offScreenDC = Graphics.FromImage(offScreenBmp);
if (mbln_Antialias)
offScreenDC.TextRenderingHint = TextRenderingHint.AntiAlias;
brsh = new LinearGradientBrush(new Rectangle(0, 0,
offScreenBmp.Width,
offScreenBmp.Height),
mclr_CaptionBeginColor,
mclr_CaptionEndColor,
menm_CaptionGradientMode);
offScreenDC.FillRectangle(brsh, 0.0f, 0.0f, offScreenBmp.Width,
offScreenBmp.Height);
if (mico_Icon != null && mbln_IconVisible)
{
offScreenDC.DrawIcon(mico_Icon,
new Rectangle(brdWidth + 2,
(mint_CaptionHeight - 16) / 2,
16, 16));
offScreenDC.DrawString(this.CaptionText, this.CaptionFont,
new SolidBrush(this.ForeColor),
new Rectangle(20, 0,
offScreenBmp.Width - 20,
mint_CaptionHeight), format);
}
else
{
offScreenDC.DrawString(this.CaptionText, this.CaptionFont,
new SolidBrush(this.ForeColor),
new Rectangle(2, 0,
offScreenBmp.Width,
mint_CaptionHeight), format);
//Console.WriteLine("Draw Caption " + mstr_CaptionText + " " + this.CaptionText + " " + offScreenBmp.Width + " " + mint_CaptionHeight);
}
drawRect = new Rectangle();
switch (menm_CaptionPosition)
{
case HeaderPanelCaptionPositions.Top:
{
drawRect.X = brdWidth;
drawRect.Width = DisplayRectangle.Width;
drawRect.Y = brdWidth;
drawRect.Height = mint_CaptionHeight;
break;
}
case HeaderPanelCaptionPositions.Bottom:
{
drawRect.X = brdWidth;
drawRect.Width = DisplayRectangle.Width;
drawRect.Y = Height - (shadowWidth + brdWidth +
mint_CaptionHeight);
drawRect.Height = mint_CaptionHeight;
break;
}
case HeaderPanelCaptionPositions.Left:
{
drawRect.X = brdWidth;
drawRect.Width = mint_CaptionHeight;
drawRect.Y = brdWidth;
drawRect.Height = Height - (shadowWidth + (2 * brdWidth));
offScreenBmp.RotateFlip(RotateFlipType.Rotate270FlipNone);
break;
}
case HeaderPanelCaptionPositions.Right:
{
drawRect.X = Width - (shadowWidth + brdWidth + mint_CaptionHeight);
drawRect.Width = mint_CaptionHeight;
drawRect.Y = brdWidth;
drawRect.Height = Height - (shadowWidth + (2 * brdWidth));
offScreenBmp.RotateFlip(RotateFlipType.Rotate90FlipNone);
break;
}
}
canvas.DrawImage(offScreenBmp, drawRect);
}
finally
{
if (brsh != null)
{
brsh.Dispose();
brsh = null;
}
if (offScreenDC != null)
{
offScreenDC.Dispose();
offScreenDC = null;
}
if (offScreenBmp != null)
{
offScreenBmp.Dispose();
offScreenBmp = null;
}
if (format != null)
{
format.Dispose();
format = null;
}
}
}