public VisualContext(VisualContext parent, BoxFactory factory) {
this.parent = parent;
this.factory = factory;
rootContext = (parent == null) ? this : parent.rootContext;
em = CSSUnits.medium_font;
rem = em;
ex = 0.6 * em;
ch = 0.8 * ch; // just an initial guess, updated in updateForGraphics()
dpi = org.fit.cssbox.css.CSSUnits.dpi;
font = new Font(Font.SERIF, Font.PLAIN, (int) CSSUnits.medium_font);
fontSize = CSSUnits.points(CSSUnits.medium_font);
fontWeight = CSSProperty.FontWeight.NORMAL;
fontStyle = CSSProperty.FontStyle.NORMAL;
fontVariant = CSSProperty.FontVariant.NORMAL;
textDecoration =
new ArrayList<CSSProperty.TextDecoration>(
2); // it is not very probable to have more than two decorations
color = Color.BLACK;
}
/**
* Updates the context according to the given element style. The properties that are not defined
* in the style are left unchanged.
*
* @param style the style data
*/
public void update(NodeData style) {
// setup the font
String family = null;
CSSProperty.FontFamily ff = style.getProperty("font-family");
if (ff == null) family = font.getFamily(); // use current
else if (ff == FontFamily.list_values) {
TermList fmlspec = style.getValue(TermList.class, "font-family");
if (fmlspec == null) family = font.getFamily();
else family = getFontName(fmlspec);
} else {
if (factory != null)
family =
factory
.getConfig()
.getDefaultFont(ff.getAWTValue()); // try to translate to physical font
if (family == null) family = ff.getAWTValue(); // could not translate - use as is
}
double size;
double psize = (parent == null) ? CSSUnits.medium_font : parent.getEm();
CSSProperty.FontSize fsize = style.getProperty("font-size");
if (fsize == null) size = em;
else if (fsize == CSSProperty.FontSize.length || fsize == CSSProperty.FontSize.percentage) {
TermLengthOrPercent lenspec = style.getValue(TermLengthOrPercent.class, "font-size");
if (lenspec != null) {
em = psize;
size =
pxLength(lenspec, psize); // pixels are ok here (java is fixed to 72 dpi for font sizes)
} else size = em;
} else size = CSSUnits.convertFontSize(psize, fsize);
fontSize = CSSUnits.points(size);
if (rootContext != null) rem = rootContext.getEm();
else rem = em; // we don't have a root context?
CSSProperty.FontWeight weight = style.getProperty("font-weight");
if (weight != null) fontWeight = weight;
CSSProperty.FontStyle fstyle = style.getProperty("font-style");
if (fstyle != null) fontStyle = fstyle;
int fs = Font.PLAIN;
if (representsBold(fontWeight)) fs = Font.BOLD;
if (fontStyle == CSSProperty.FontStyle.ITALIC || fontStyle == CSSProperty.FontStyle.OBLIQUE)
fs = fs | Font.ITALIC;
font = new Font(family, fs, (int) Math.round(size));
em = size;
CSSProperty.FontVariant variant = style.getProperty("font-variant");
if (variant != null) fontVariant = variant;
CSSProperty.TextDecoration decor = style.getProperty("text-decoration");
textDecoration.clear();
if (decor != null) {
if (decor == TextDecoration.list_values) {
TermList list = style.getValue(TermList.class, "text-decoration");
for (Term<?> t : list) {
if (t.getValue() instanceof CSSProperty.TextDecoration)
textDecoration.add((CSSProperty.TextDecoration) t.getValue());
}
} else if (decor != TextDecoration.NONE) textDecoration.add(decor);
}
// color
TermColor clr = style.getValue(TermColor.class, "color");
if (clr != null) color = clr.getValue();
}