gtk2_ardour/ghostregion.cc

   1 #include "canvas-simplerect.h"
   2 #include "ghostregion.h"
   3 #include "automation_time_axis.h"
   4 #include "rgb_macros.h"
   5
   6 using namespace Editing;
   7
   8 GhostRegion::GhostRegion (AutomationTimeAxisView& atv, double initial_pos)
   9         : trackview (atv)
  10 {
  11         group = gnome_canvas_item_new (GNOME_CANVAS_GROUP(trackview.canvas_display),
  12                                      gnome_canvas_group_get_type(),
  13                                      "x", initial_pos,
  14                                      "y", 0.0,
  15                                      NULL);
  16
  17         base_rect = gnome_canvas_item_new (GNOME_CANVAS_GROUP(group),
  18                                          gnome_canvas_simplerect_get_type(),
  19                                          "x1", (double) 0.0,
  20                                          "y1", (double) 0.0,
  21                                          "y2", (double) trackview.height,
  22                                          "outline_what", (guint32) 0,
  23                                          "outline_color_rgba", color_map[cGhostTrackBaseOutline],
  24                                          "fill_color_rgba", color_map[cGhostTrackBaseFill],
  25                                          NULL);
  26
  27         gnome_canvas_item_lower_to_bottom (group);
  28
  29         atv.add_ghost (this);
  30 }
  31
  32 GhostRegion::~GhostRegion ()
  33 {
  34         GoingAway (this);
  35         gtk_object_destroy (GTK_OBJECT(group));
  36 }
  37
  38 void
  39 GhostRegion::set_samples_per_unit (double spu)
  40 {
  41         for (vector<GnomeCanvasItem*>::iterator i = waves.begin(); i != waves.end(); ++i) {
  42                 gnome_canvas_item_set ((*i), "samples_per_unit", spu, NULL);
  43         }
  44 }
  45
  46 void
  47 GhostRegion::set_duration (double units)
  48 {
  49         gnome_canvas_item_set (base_rect, "x2", units, NULL);
  50 }
  51
  52 void
  53 GhostRegion::set_height ()
  54 {
  55         gdouble ht;
  56         vector<GnomeCanvasItem*>::iterator i;
  57         uint32_t n;
  58
  59         gnome_canvas_item_set (base_rect, "y2", (double) trackview.height, NULL);
  60
  61         ht = ((trackview.height) / (double) waves.size());
  62
  63         for (n = 0, i = waves.begin(); i != waves.end(); ++i, ++n) {
  64                 gdouble yoff = n * ht;
  65                 gnome_canvas_item_set ((*i), "height", ht, "y", yoff, NULL);
  66         }
  67 }
  68