*/
#include "canvas/line_set.h"
-#include "canvas/utils.h"
using namespace std;
using namespace ArdourCanvas;
-/* XXX: hard-wired to horizontal only */
-
class LineSorter {
public:
- bool operator() (LineSet::Line& a, LineSet::Line& b) {
- return a.y < b.y;
+ bool operator() (LineSet::Line const & a, LineSet::Line const & b) {
+ return a.pos < b.pos;
}
};
-LineSet::LineSet (Group* parent)
- : Item (parent)
- , _height (0)
+LineSet::LineSet (Canvas* c, Orientation o)
+ : Item (c)
+ , _extent (0)
+ , _orientation (o)
{
}
+LineSet::LineSet (Item* parent, Orientation o)
+ : Item (parent)
+ , _extent (0)
+ , _orientation (o)
+{
+
+}
void
LineSet::compute_bounding_box () const
{
if (_lines.empty ()) {
- _bounding_box = boost::optional<Rect> ();
+ _bounding_box = Rect ();
} else {
- _bounding_box = Rect (0, _lines.front().y - (_lines.front().width/2.0), COORD_MAX, min (_height, _lines.back().y - (_lines.back().width/2.0)));
+
+ if (_orientation == Horizontal) {
+
+ _bounding_box = Rect (0, /* x0 */
+ _lines.front().pos - (_lines.front().width/2.0), /* y0 */
+ _extent, /* x1 */
+ _lines.back().pos - (_lines.back().width/2.0) /* y1 */
+ );
+
+ } else {
+
+ _bounding_box = Rect (_lines.front().pos - _lines.front().width/2.0, /* x0 */
+ 0, /* y0 */
+ _lines.back().pos + _lines.back().width/2.0, /* x1 */
+ _extent /* y1 */
+ );
+ }
}
+
_bounding_box_dirty = false;
}
void
-LineSet::set_height (Distance height)
+LineSet::set_extent (Distance e)
{
begin_change ();
- _height = height;
-
+ _extent = e;
_bounding_box_dirty = true;
+
end_change ();
}
{
/* area is in window coordinates */
- for (list<Line>::const_iterator i = _lines.begin(); i != _lines.end(); ++i) {
+ for (vector<Line>::const_iterator i = _lines.begin(); i != _lines.end(); ++i) {
- Rect self = item_to_window (Rect (0, i->y - (i->width/2.0), COORD_MAX, i->y + (i->width/2.0)));
- boost::optional<Rect> intersect = self.intersection (area);
-
- if (!intersect) {
- continue;
+ Rect self;
+
+ if (_orientation == Horizontal) {
+ self = item_to_window (Rect (0, i->pos - (i->width/2.0), _extent, i->pos + (i->width/2.0)));
+ } else {
+ self = item_to_window (Rect (i->pos - (i->width/2.0), 0, i->pos + (i->width/2.0), _extent));
+ }
+
+ Rect isect = self.intersection (area);
+
+ if (!isect) {
+ continue;
}
- set_source_rgba (context, i->color);
+ Rect intersection (isect);
+
+ Gtkmm2ext::set_source_rgba (context, i->color);
context->set_line_width (i->width);
- context->move_to (intersect->x0, self.y0 + ((self.y1 - self.y0)/2.0));
- context->line_to (intersect->x1, self.y0 + ((self.y1 - self.y0)/2.0));
+
+ /* Not 100% sure that the computation of the invariant
+ * positions (y and x) below work correctly if the line width
+ * is not 1.0, but visual inspection suggests it is OK.
+ */
+
+ if (_orientation == Horizontal) {
+ double y = self.y0 + ((self.y1 - self.y0)/2.0);
+ context->move_to (intersection.x0, y);
+ context->line_to (intersection.x1, y);
+ } else {
+ double x = self.x0 + ((self.x1 - self.x0)/2.0);
+ context->move_to (x, intersection.y0);
+ context->line_to (x, intersection.y1);
+ }
+
context->stroke ();
}
}
void
-LineSet::add (Coord y, Distance width, Color color)
+LineSet::add (Coord y, Distance width, Gtkmm2ext::Color color)
{
begin_change ();
-
+
_lines.push_back (Line (y, width, color));
- _lines.sort (LineSorter ());
+ sort (_lines.begin(), _lines.end(), LineSorter());
_bounding_box_dirty = true;
end_change ();
_bounding_box_dirty = true;
end_change ();
}
+
+bool
+LineSet::covers (Duple const & /*point*/) const
+{
+ /* lines are ordered by position along primary axis, so binary search
+ * to find the place to start looking.
+ *
+ * XXX but not yet.
+ */
+
+ return false;
+}