2 Copyright (C) 2003 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 #include <ardour/region.h>
24 #include <gtkmm2ext/doi.h>
26 #include "canvas-simplerect.h"
27 #include "canvas-curve.h"
28 #include "crossfade_view.h"
29 #include "rgb_macros.h"
30 #include "audio_time_axis.h"
31 #include "public_editor.h"
32 #include "regionview.h"
36 using namespace ARDOUR;
37 using namespace Editing;
39 sigc::signal<void,CrossfadeView*> CrossfadeView::GoingAway;
41 CrossfadeView::CrossfadeView (Gnome::Canvas::Group *parent,
42 AudioTimeAxisView &tv,
45 Gdk::Color& basic_color,
46 AudioRegionView& lview,
47 AudioRegionView& rview)
50 : TimeAxisViewItem ("xf.name()", *parent, tv, spu, basic_color, xf.position(),
51 xf.overlap_length(), TimeAxisViewItem::Visibility (TimeAxisViewItem::ShowFrame)),
60 fade_in = gnome_canvas_item_new (GNOME_CANVAS_GROUP(group),
61 gnome_canvas_line_get_type(),
62 "fill_color_rgba", color_map[cCrossfadeLine],
63 "width_pixels", (guint) 1,
66 fade_out = gnome_canvas_item_new (GNOME_CANVAS_GROUP(group),
67 gnome_canvas_line_get_type(),
68 "fill_color_rgba", color_map[cCrossfadeLine],
69 "width_pixels", (guint) 1,
72 set_height (get_time_axis_view().height);
74 /* no frame around the xfade or overlap rects */
76 frame->set_property ("outline_what", 0);
78 /* never show the vestigial frame */
80 vestigial_frame->hide();
81 show_vestigial = false;
84 // group->signal_event.connect (bind (mem_fun (tv.editor, &PublicEditor::canvas_crossfade_view_event), group, this));
86 crossfade_changed (Change (~0));
88 crossfade.StateChanged.connect (mem_fun(*this, &CrossfadeView::crossfade_changed));
91 CrossfadeView::~CrossfadeView ()
93 GoingAway (this) ; /* EMIT_SIGNAL */
97 CrossfadeView::get_item_name ()
100 // return crossfade.name();
104 CrossfadeView::reset_width_dependent_items (double pixel_width)
106 TimeAxisViewItem::reset_width_dependent_items (pixel_width);
110 if (pixel_width < 5) {
111 gnome_canvas_item_hide (fade_in);
112 gnome_canvas_item_hide (fade_out);
117 CrossfadeView::set_height (double height)
119 if (height == TimeAxisView::Smaller ||
120 height == TimeAxisView::Small)
121 TimeAxisViewItem::set_height (height - 3 );
123 TimeAxisViewItem::set_height (height - NAME_HIGHLIGHT_SIZE - 3 );
129 CrossfadeView::crossfade_changed (Change what_changed)
131 bool need_redraw_curves = false;
133 if (what_changed & BoundsChanged) {
134 set_position (crossfade.position(), this);
135 set_duration (crossfade.overlap_length(), this);
136 need_redraw_curves = true;
139 if (what_changed & Crossfade::ActiveChanged) {
140 /* calls redraw_curves */
142 } else if (need_redraw_curves) {
148 CrossfadeView::redraw_curves ()
150 GnomeCanvasPoints* points;
157 At "height - 3.0" the bottom of the crossfade touches the name highlight or the bottom of the track (if the
158 track is either Small or Smaller.
160 switch(get_time_axis_view().height) {
161 case TimeAxisView::Smaller:
162 case TimeAxisView::Small:
163 h = get_time_axis_view().height - 3.0;
167 h = get_time_axis_view().height - NAME_HIGHLIGHT_SIZE - 3.0;
171 /* no space allocated yet */
175 npoints = get_time_axis_view().editor.frame_to_pixel (crossfade.length());
176 npoints = std::min (gdk_screen_width(), npoints);
178 if (!_visible || !crossfade.active() || npoints < 3) {
179 gnome_canvas_item_hide (fade_in);
180 gnome_canvas_item_hide (fade_out);
183 gnome_canvas_item_show (fade_in);
184 gnome_canvas_item_show (fade_out);
187 points = get_canvas_points ("xfade edit redraw", npoints);
188 vec = new float[npoints];
190 crossfade.fade_in().get_vector (0, crossfade.length(), vec, npoints);
191 for (int i = 0, pci = 0; i < npoints; ++i) {
192 points->coords[pci++] = i;
193 points->coords[pci++] = 2.0 + h - (h * vec[i]);
195 gnome_canvas_item_set (fade_in, "points", points, NULL);
197 crossfade.fade_out().get_vector (0, crossfade.length(), vec, npoints);
198 for (int i = 0, pci = 0; i < npoints; ++i) {
199 points->coords[pci++] = i;
200 points->coords[pci++] = 2.0 + h - (h * vec[i]);
202 gnome_canvas_item_set (fade_out, "points", points, NULL);
206 gnome_canvas_points_unref (points);
208 /* XXX this is ugly, but it will have to wait till Crossfades are reimplented
209 as regions. This puts crossfade views on top of a track, above all regions.
212 group->raise_to_top();
216 CrossfadeView::active_changed ()
218 if (crossfade.active()) {
219 frame->set_property ("fill_color_rgba", color_map[cActiveCrossfade]);
221 frame->set_property ("fill_color_rgba", color_map[cInactiveCrossfade]);
228 CrossfadeView::set_valid (bool yn)
234 CrossfadeView::upper_regionview () const
236 if (left_view.region.layer() > right_view.region.layer()) {
244 CrossfadeView::show ()
251 CrossfadeView::hide ()
258 CrossfadeView::fake_hide ()