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