/**
* Iterate over the lines represented by the child elements of the element this view represents,
* looking for the line that is the longest. The <em>longLine</em> variable is updated to
* represent the longest line contained. The <em>font</em> variable is updated to indicate the
* font used to calculate the longest line.
*/
void calculateLongestLine() {
Component c = getContainer();
font = c.getFont();
metrics = c.getFontMetrics(font);
tabSize = getTabSize() * metrics.charWidth(' ');
Element lines = getElement();
int n = lines.getElementCount();
for (int i = 0; i < n; i++) {
Element line = lines.getElement(i);
float w = getLineWidth(i);
if (w > longLineWidth) {
longLineWidth = w;
longLine = line;
}
}
}
final void updateMetrics() {
Component host = getContainer();
Font f = host.getFont();
metrics = host.getFontMetrics(f); // Metrics for the default font.
tabSize = getTabSize() * metrics.charWidth('m');
}
/**
* Fetches the font metrics associated with the component hosting this view.
*
* @return the metrics
*/
protected FontMetrics getFontMetrics() {
Component c = getContainer();
return c.getFontMetrics(c.getFont());
}