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#include <algorithm>
#include <cairomm/context.h>
#include "pbd/xml++.h"
#include "pbd/compose.h"
#include "canvas/line.h"
#include "canvas/types.h"
#include "canvas/debug.h"
#include "canvas/utils.h"
using namespace std;
using namespace ArdourCanvas;
Line::Line (Group* parent)
: Item (parent)
, Outline (parent)
{
}
void
Line::compute_bounding_box () const
{
Rect bbox;
bbox.x0 = min (_points[0].x, _points[1].x);
bbox.y0 = min (_points[0].y, _points[1].y);
bbox.x1 = max (_points[0].x, _points[1].x);
bbox.y1 = max (_points[0].y, _points[1].y);
bbox = bbox.expand (_outline_width / 2);
_bounding_box = bbox;
_bounding_box_dirty = false;
}
void
Line::render (Rect const & /*area*/, Cairo::RefPtr<Cairo::Context> context) const
{
setup_outline_context (context);
Duple plot[2] = {
Duple (min (_points[0].x, CAIRO_MAX), min (_points[0].y, CAIRO_MAX)),
Duple (min (_points[1].x, CAIRO_MAX), min (_points[1].y, CAIRO_MAX))
};
context->move_to (plot[0].x, plot[0].y);
context->line_to (plot[1].x, plot[1].y);
context->stroke ();
}
void
Line::set (Duple a, Duple b)
{
begin_change ();
_points[0] = a;
_points[1] = b;
_bounding_box_dirty = true;
end_change ();
DEBUG_TRACE (PBD::DEBUG::CanvasItemsDirtied, "canvas item dirty: line change\n");
}
void
Line::set_x0 (Coord x0)
{
begin_change ();
_points[0].x = x0;
_bounding_box_dirty = true;
end_change ();
DEBUG_TRACE (PBD::DEBUG::CanvasItemsDirtied, "canvas item dirty: line change\n");
}
void
Line::set_y0 (Coord y0)
{
begin_change ();
_points[0].y = y0;
_bounding_box_dirty = true;
end_change ();
DEBUG_TRACE (PBD::DEBUG::CanvasItemsDirtied, "canvas item dirty: line change\n");
}
void
Line::set_x1 (Coord x1)
{
begin_change ();
_points[1].x = x1;
_bounding_box_dirty = true;
end_change ();
DEBUG_TRACE (PBD::DEBUG::CanvasItemsDirtied, "canvas item dirty: line change\n");
}
void
Line::set_y1 (Coord y1)
{
begin_change ();
_points[1].y = y1;
_bounding_box_dirty = true;
end_change ();
DEBUG_TRACE (PBD::DEBUG::CanvasItemsDirtied, "canvas item dirty: line change\n");
}
XMLNode *
Line::get_state () const
{
XMLNode* node = new XMLNode ("Line");
#ifdef CANVAS_DEBUG
if (!name.empty ()) {
node->add_property ("name", name);
}
#endif
node->add_property ("x0", string_compose ("%1", _points[0].x));
node->add_property ("y0", string_compose ("%1", _points[0].y));
node->add_property ("x1", string_compose ("%1", _points[1].x));
node->add_property ("y1", string_compose ("%1", _points[1].y));
add_item_state (node);
add_outline_state (node);
return node;
}
void
Line::set_state (XMLNode const * node)
{
_points[0].x = atof (node->property("x0")->value().c_str());
_points[0].y = atof (node->property("y0")->value().c_str());
_points[1].x = atof (node->property("x1")->value().c_str());
_points[1].y = atof (node->property("y1")->value().c_str());
set_item_state (node);
set_outline_state (node);
_bounding_box_dirty = true;
}
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