/// <summary> /// Generate css tree by parsing the given html and applying the given css style data on it. /// </summary> /// <param name="html">the html to parse</param> /// <param name="htmlContainer">the html container to use for reference resolve</param> /// <param name="cssData">the css data to use</param> /// <returns>the root of the generated tree</returns> public CssBox GenerateCssTree(string html, HtmlContainerInt htmlContainer, CssDataWithChanged cssData) { var root = HtmlParser.ParseDocument(html); if (root != null) { root.HtmlContainer = htmlContainer; CascadeParseStyles(root, htmlContainer, cssData); CascadeApplyStyles(root, cssData.cssData); SetTextSelectionStyle(htmlContainer, cssData.cssData); CorrectTextBoxes(root); CorrectImgBoxes(root); bool followingBlock = true; CorrectLineBreaksBlocks(root, ref followingBlock); CorrectInlineBoxesParent(root); CorrectBlockInsideInline(root); CorrectInlineBoxesParent(root); } return(root); }
/// <summary> /// Read styles defined inside the dom structure in links and style elements.<br/> /// If the html tag is "style" tag parse it content and add to the css data for all future tags parsing.<br/> /// If the html tag is "link" that point to style data parse it content and add to the css data for all future tags parsing.<br/> /// </summary> /// <param name="box">the box to parse style data in</param> /// <param name="htmlContainer">the html container to use for reference resolve</param> /// <param name="cssData">the style data to fill with found styles</param> /// <param name="cssDataChanged">check if the css data has been modified by the handled html not to change the base css data</param> private void CascadeParseStyles(CssBox box, HtmlContainerInt htmlContainer, CssDataWithChanged cssData) { if (box.HtmlTag != null) { // Check for the <link rel=stylesheet> tag if (box.HtmlTag.Name.Equals("link", StringComparison.CurrentCultureIgnoreCase) && box.GetAttribute("rel", string.Empty).Equals("stylesheet", StringComparison.CurrentCultureIgnoreCase)) { cssData.CloneCssData(); var stylesheetData = htmlContainer.ResourceServer.GetCssData(box.GetAttribute("href", string.Empty), box.HtmlTag.Attributes); /* * string stylesheet; * CssData stylesheetData; * StylesheetLoadHandler.LoadStylesheet(htmlContainer, * box.GetAttribute("href", string.Empty), * box.HtmlTag.Attributes, out stylesheet, out stylesheetData); */ /* * if (stylesheet != null) * _cssParser.ParseStyleSheet(cssData, stylesheet); * else */ if (stylesheetData != null) { cssData.cssData.Combine(stylesheetData); } } // Check for the <style> tag if (box.HtmlTag.Name.Equals("style", StringComparison.CurrentCultureIgnoreCase) && box.Boxes.Count > 0) { cssData.CloneCssData(); foreach (var child in box.Boxes) { _cssParser.ParseStyleSheet(cssData.cssData, child.Text.CutSubstring()); } } } foreach (var childBox in box.Boxes) { CascadeParseStyles(childBox, htmlContainer, cssData); } }