protected override void CreateFragment()
{
string text = Text;
string font = string.Format("font: {0}pt {1}", Font.Size, Font.FontFamily.Name);
//Create fragment container
_htmlContainer = new InitialContainer("<table border=0 cellspacing=5 cellpadding=0 style=\"" + font + "\"><tr><td>" + text + "</td></tr></table>");
//_htmlContainer.SetBounds(new Rectangle(0, 0, 10, 10));
}
/// <summary>
/// Renders the specified HTML source on the specified area clipping if specified
/// </summary>
/// <param name="g">Device to draw</param>
/// <param name="html">HTML source</param>
/// <param name="area">Area where HTML should be drawn</param>
/// <param name="clip">If true, it will only paint on the specified area</param>
public static void Render(Graphics g, string html, RectangleF area, bool clip)
{
InitialContainer container = new InitialContainer(html);
Region prevClip = g.Clip;
if (clip) g.SetClip(area);
container.SetBounds(area);
container.MeasureBounds(g);
container.Paint(g);
if (clip) g.SetClip(prevClip, System.Drawing.Drawing2D.CombineMode.Replace);
}
/// <summary>
/// Parses the document
/// </summary>
private void ParseDocument()
{
InitialContainer root = this;
MatchCollection tags = Parser.Match(Parser.HtmlTag, DocumentSource);
CssBox curBox = root;
int lastEnd = -1;
foreach (Match tagmatch in tags)
{
string text = tagmatch.Index > 0 ? DocumentSource.Substring(lastEnd + 1, tagmatch.Index - lastEnd - 1) : string.Empty;
if (!string.IsNullOrEmpty(text.Trim()))
{
CssAnonymousBox abox = new CssAnonymousBox(curBox);
abox.Text = text;
}
else if (text != null && text.Length > 0)
{
CssAnonymousSpaceBox sbox = new CssAnonymousSpaceBox(curBox);
sbox.Text = text;
}
HtmlTag tag = new HtmlTag(tagmatch.Value);
if (tag.IsClosing)
{
curBox = FindParent(tag.TagName, curBox);
}
else if (tag.IsSingle)
{
CssBox foo = new CssBox(curBox, tag);
}
else
{
curBox = new CssBox(curBox, tag);
}
lastEnd = tagmatch.Index + tagmatch.Length - 1;
}
string finaltext = DocumentSource.Substring((lastEnd > 0 ? lastEnd + 1 : 0), DocumentSource.Length - lastEnd - 1 + (lastEnd == 0 ? 1 : 0));
if (!string.IsNullOrEmpty(finaltext))
{
CssAnonymousBox abox = new CssAnonymousBox(curBox);
abox.Text = finaltext;
}
}
/// <summary>
/// Creates a new HtmlPanel
/// </summary>
public HtmlPanel()
{
_htmlContainer = new InitialContainer();
SetStyle(ControlStyles.ResizeRedraw, true);
SetStyle(ControlStyles.Opaque, true);
//SetStyle(ControlStyles.Selectable, true);
DoubleBuffered = true;
BackColor = SystemColors.Window;
AutoScroll = true;
HtmlRenderer.AddReference(Assembly.GetCallingAssembly());
}
/// <summary>
/// Renders the specified HTML source on the specified area clipping if specified
/// </summary>
/// <param name="g">Device to draw</param>
/// <param name="html">HTML source</param>
/// <param name="area">Area where HTML should be drawn</param>
/// <param name="clip">If true, it will only paint on the specified area</param>
public static void Render(Graphics g, string html, RectangleF area, bool clip)
{
InitialContainer container = new InitialContainer(html);
Region prevClip = g.Clip;
if (clip)
{
g.SetClip(area);
}
container.SetBounds(area);
container.MeasureBounds(g);
container.Paint(g);
if (clip)
{
g.SetClip(prevClip, System.Drawing.Drawing2D.CombineMode.Replace);
}
}
void HtmlToolTip_Popup(object sender, PopupEventArgs e)
{
string text = this.GetToolTip(e.AssociatedControl);
string font = string.Format(NumberFormatInfo.InvariantInfo, "font: {0}pt {1}", e.AssociatedControl.Font.Size, e.AssociatedControl.Font.FontFamily.Name);
//Create fragment container
container = new InitialContainer("<table class=htmltooltipbackground cellspacing=5 cellpadding=0 style=\"" + font + "\"><tr><td style=border:0px>" + text + "</td></tr></table>");
container.SetBounds(new Rectangle(0, 0, 10, 10));
container.AvoidGeometryAntialias = true;
//Measure bounds of the container
using (Graphics g = e.AssociatedControl.CreateGraphics())
{
container.MeasureBounds(g);
}
//Set the size of the tooltip
e.ToolTipSize = Size.Round(container.MaximumSize);
}
void HtmlToolTip_Popup(object sender, PopupEventArgs e)
{
string text = this.GetToolTip(e.AssociatedControl);
string font = string.Format(NumberFormatInfo.InvariantInfo, "font: {0}pt {1}", e.AssociatedControl.Font.Size, e.AssociatedControl.Font.FontFamily.Name);
//Create fragment container
container = new InitialContainer("<table class=htmltooltipbackground cellspacing=5 cellpadding=0 style=\"" + font + "\"><tr><td style=border:0px>" + text + "</td></tr></table>");
container.SetBounds(new Rectangle(0, 0, 10, 10));
container.AvoidGeometryAntialias = true;
//Measure bounds of the container
using (Graphics g = e.AssociatedControl.CreateGraphics())
{
container.MeasureBounds(g);
}
//Set the size of the tooltip
e.ToolTipSize = Size.Round(container.MaximumSize);
}
/// <summary>
/// Sets the initial container of the box
/// </summary>
/// <param name="b"></param>
private void SetInitialContainer(InitialContainer b)
{
_initialContainer = b;
}
/// <summary>
/// Creates the fragment of HTML that is rendered
/// </summary>
protected virtual void CreateFragment()
{
_htmlContainer = new InitialContainer(Text);
}
private Bitmap GenerateBitmap()
{
try
{
Bitmap c = new Bitmap(this.Width, this.Height);
Graphics g = Graphics.FromImage(c);
g.FillRectangle(new SolidBrush(BackColor), new Rectangle(0, 0, Width, Height));
int fontSize = (int)(((float)Block.Font.Size / 11) * 3);
String html = "<font face=\"" + Block.Font.FontFamily.Name + "\" size=\"1\" color=\"" + ColorTranslator.ToHtml(Block.ForeColor) + "\">" + Text + "</font>";
InitialContainer htmlContainer = new InitialContainer(html);
htmlPanel.HtmlContainer.Text = html;
HtmlRenderer.Render(g, html, new Point(0, 0), this.Width);
//if (this.Shadow)
// g.DrawString(Text, new Font("MS Sans Serif", 11), new SolidBrush(Block.TextShadowColor), new RectangleF(0f, -1f, (float)Width, (float)Height));
//g.DrawString(Text, new Font("MS Sans Serif", 11), new SolidBrush(ForeColor), new RectangleF(0f, -0f, (float)Width, (float)Height));
return c;
}
catch (Exception e)
{
return null;
}
}
public static SizeF GetPreferredSize(Graphics g, string html, float width)
{
InitialContainer container = new InitialContainer(html);
RectangleF area = new RectangleF(new PointF(0, 0), new SizeF(width, 0));
container.SetBounds(area);
container.MeasureBounds(g, true);
return container.MaximumSize;
}