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ghostregion.cc

#include "canvas-simplerect.h"
#include "ghostregion.h"
#include "automation_time_axis.h"
#include "rgb_macros.h"

using namespace Editing;

GhostRegion::GhostRegion (AutomationTimeAxisView& atv, double initial_pos)
      : trackview (atv)
{
      group = gtk_canvas_item_new (GTK_CANVAS_GROUP(trackview.canvas_display),
                             gtk_canvas_group_get_type(),
                             "x", initial_pos,
                             "y", 0.0,
                             NULL);

      base_rect = gtk_canvas_item_new (GTK_CANVAS_GROUP(group),
                               gtk_canvas_simplerect_get_type(),
                               "x1", (double) 0.0,
                               "y1", (double) 0.0,
                               "y2", (double) trackview.height,
                               "outline_what", (guint32) 0,
                               "outline_color_rgba", color_map[cGhostTrackBaseOutline],
                               "fill_color_rgba", color_map[cGhostTrackBaseFill],
                               NULL);

      gtk_canvas_item_lower_to_bottom (group);

      atv.add_ghost (this);
}

GhostRegion::~GhostRegion ()
{
      GoingAway (this);
      gtk_object_destroy (GTK_OBJECT(group));
}

void
GhostRegion::set_samples_per_unit (double spu)
{
      for (vector<GtkCanvasItem*>::iterator i = waves.begin(); i != waves.end(); ++i) {
            gtk_canvas_item_set ((*i), "samples_per_unit", spu, NULL);
      }           
}

void
GhostRegion::set_duration (double units)
{
      gtk_canvas_item_set (base_rect, "x2", units, NULL);
}

void
GhostRegion::set_height ()
{
      gdouble ht;
      vector<GtkCanvasItem*>::iterator i;
      uint32_t n;

      gtk_canvas_item_set (base_rect, "y2", (double) trackview.height, NULL);

      ht = ((trackview.height) / (double) waves.size());
      
      for (n = 0, i = waves.begin(); i != waves.end(); ++i, ++n) {
            gdouble yoff = n * ht;
            gtk_canvas_item_set ((*i), "height", ht, "y", yoff, NULL);
      }
}


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