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annotate src/styleengine.hh @ 1731:92b899247f72

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make StyleEngine::Node a struct - it's just that anyway
author Johannes Hofmann <Johannes.Hofmann@gmx.de>
date Mon, 11 Oct 2010 18:08:31 +0200
parents b27cf7eb15b6
children 3e3630a58627
rev   line source
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96713a0f5d8b css.[ch][ch] -> styleengine.[ch][ch]
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1 #ifndef __STYLEENGINE_HH__
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2 #define __STYLEENGINE_HH__
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3
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4 class StyleEngine;
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5
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6 #include "dw/core.hh"
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7 #include "doctree.hh"
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8 #include "css.hh"
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9 #include "cssparser.hh"
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10
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11 /**
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12 * \brief This class provides the glue between HTML parser and CSS subsystem.
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13 *
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14 * It maintains a document tree and creates and caches style objects for use
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15 * by the HTML parser.
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16 * The HTML parser in turn informs StyleEngine about opened or closed
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17 * HTML elements and their attributes via the startElement() / endElement()
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18 * methods.
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19 */
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20 class StyleEngine {
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21 private:
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22 struct Node {
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23 dw::core::style::Style *style;
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24 dw::core::style::Style *wordStyle;
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25 const char *styleAttribute;
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26 bool inheritBackgroundColor;
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27 };
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28
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29 dw::core::Layout *layout;
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30 lout::misc::SimpleVector <Node> *stack;
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31 CssContext *cssContext;
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32 Doctree *doctree;
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33 int importDepth;
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34
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35 dw::core::style::Style *style0 (CssPropertyList *nonCssHints = NULL);
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36 dw::core::style::Style *wordStyle0 (CssPropertyList *nonCssHints = NULL);
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37 void preprocessAttrs (dw::core::style::StyleAttrs *attrs);
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38 void postprocessAttrs (dw::core::style::StyleAttrs *attrs);
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39 void apply (dw::core::style::StyleAttrs *attrs, CssPropertyList *props);
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40 bool computeValue (int *dest, CssLength value,
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41 dw::core::style::Font *font);
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42 bool computeValue (int *dest, CssLength value,
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43 dw::core::style::Font *font, int percentageBase);
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44 bool computeLength (dw::core::style::Length *dest, CssLength value,
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45 dw::core::style::Font *font);
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46 void computeBorderWidth (int *dest, CssProperty *p,
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47 dw::core::style::Font *font);
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48
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49 public:
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50 StyleEngine (dw::core::Layout *layout);
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51 ~StyleEngine ();
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52
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53 void parse (DilloHtml *html, DilloUrl *url, const char *buf, int buflen,
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54 CssOrigin origin);
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55 void startElement (int tag);
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56 void startElement (const char *tagname);
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57 void setId (const char *id);
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58 const char * getId () { return doctree->top ()->id; };
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59 void setClass (const char *klass);
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60 void setStyle (const char *style);
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61 void endElement (int tag);
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62 void setPseudoLink ();
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63 void setPseudoVisited ();
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64 void setNonCssHints (CssPropertyList *nonCssHints);
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65 void inheritBackgroundColor (); /* \todo get rid of this somehow */
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66 dw::core::style::Style *backgroundStyle ();
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68 inline dw::core::style::Style *style () {
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69 dw::core::style::Style *s = stack->getRef (stack->size () - 1)->style;
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70 if (s)
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71 return s;
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72 else
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73 return style0 ();
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74 };
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75
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76 inline dw::core::style::Style *wordStyle () {
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77 dw::core::style::Style *s = stack->getRef(stack->size()-1)->wordStyle;
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78 if (s)
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79 return s;
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80 else
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81 return wordStyle0 ();
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82 };
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83 };
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84
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85 #endif