Layout::iterator Layout::getLetterAt(double x, double y) const
{
Geom::Point point(x, y);
double rotation;
for (iterator it = begin() ; it != end() ; it.nextCharacter()) {
Geom::Rect box = characterBoundingBox(it, &rotation);
// todo: rotation
if (box.contains(point)) return it;
}
return end();
}
/**
* Get the item under the specified point.
* Searches the tree for the first item in the Z-order which is closer than
* @a delta to the given point. The pick should be visual - for example
* an object with a thick stroke should pick on the entire area of the stroke.
* @param p Search point
* @param delta Maximum allowed distance from the point
* @param sticky Whether the pick should ignore visibility and sensitivity.
* When false, only visible and sensitive objects are considered.
* When true, invisible and insensitive objects can also be picked.
*/
DrawingItem *
DrawingItem::pick(Geom::Point const &p, double delta, unsigned flags)
{
// Sometimes there's no BBOX in state, reason unknown (bug 992817)
// I made this not an assert to remove the warning
if (!(_state & STATE_BBOX) || !(_state & STATE_PICK)) {
g_warning("Invalid state when picking: STATE_BBOX = %d, STATE_PICK = %d",
_state & STATE_BBOX, _state & STATE_PICK);
return NULL;
}
// ignore invisible and insensitive items unless sticky
if (!(flags & PICK_STICKY) && !(_visible && _sensitive))
return NULL;
bool outline = _drawing.outline();
if (!_drawing.outline()) {
// pick inside clipping path; if NULL, it means the object is clipped away there
if (_clip) {
DrawingItem *cpick = _clip->pick(p, delta, flags | PICK_AS_CLIP);
if (!cpick) return NULL;
}
// same for mask
if (_mask) {
DrawingItem *mpick = _mask->pick(p, delta, flags);
if (!mpick) return NULL;
}
}
Geom::OptIntRect box = (outline || (flags & PICK_AS_CLIP)) ? _bbox : _drawbox;
if (!box) {
return NULL;
}
Geom::Rect expanded = *box;
expanded.expandBy(delta);
if (expanded.contains(p)) {
return _pickItem(p, delta, flags);
}
return NULL;
}
static bool is_within(Geom::Rect const &area, Geom::Rect const &box)
{
return area.contains(box);
}